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  • Life and Medical Sciences  (6,945)
  • Engineering  (2,593)
  • 2020-2024  (62)
  • 1985-1989  (8,823)
  • 1950-1954  (653)
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  • 1
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    Emerald Publishing | ICE Publishing
    Publication Date: 2024-04-11
    Description: The ebook edition of this title is Open Access and freely available to read online. Specification for Tunnelling, Fourth edition is a standard industry document for tunnelling contracts and forms the basis of tunnelling specifications for projects throughout the world. It reflects current industry best practice and considers technological advancements over the last ten years. It also investigates a range of new topics. Since the publication of the third edition in 2010, the British tunnelling industry has completed several major projects both domestic and abroad. This updated fourth edition captures the many advances made in the field of tunnelling and the lessons learned on these projects through a comprehensive review of all content by subject matter experts. The importance of sustainability and the increased market share of low CO2e materials have been reflected by removal of prescriptive requirements and a strong emphasis on performance-based specification. All references to codes, standards and other design documents have been comprehensively updated. Drafted by an expert editorial committee and supported by multiple rounds of industry-wide peer reviews, the Specification for Tunnelling in its fourth edition will continue to be the de facto standard reference work for tunnelling in the UK and worldwide.
    Keywords: Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building ; thema EDItEUR::L Law::LN Laws of specific jurisdictions and specific areas of law::LNC Company, commercial and competition law: general::LNCQ Construction and engineering law ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building ; thema EDItEUR::L Law::LN Laws of specific jurisdictions and specific areas of law::LNC Company, commercial and competition law: general::LNCQ Construction and engineering law ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials
    Language: English
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  • 2
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The 3rd International Conference on Advances in Mechanical Engineering 2023 (ICAME-23) was organized on 24th August 2023 by the Department of Mechanical Engineering, Capital University of Science and Technology (CUST). All the articles are single-blindfold reviewed. The acceptance rate of the conference was 65%. ICAME is held annually and welcame high-quality theoretical and empirical original research papers, case studies, and review papers from researchers, academicians, professionals, practitioners, and students worldwide. ICAME-23 accepted research papers in the discipline of: Experimental and Computational Fluid Dynamics; Thermodynamics and heat transfer analysis; Machine and Mechanisms; Design and Solid Mechanics; Manufacturing, Production and Industrial Engineering; Engineering and Technology Management; Renewable Energy and Environmental Engineering; Bioengineering; Materials and Failure Analysis; Other Related Fields. The ICAME-23 conference provided a platform for the national and international speakers/participants to present their state-of-the-art research work to diverse audiences from academia and industry. The conference proceedings are published in the Engineering Proceeding of MDPI, Switzerland. All the articles are individually indexed and are citable via Digital Object Identification (DOI).
    Keywords: Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials
    Language: English
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  • 3
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    Taylor & Francis | Routledge
    Publication Date: 2024-04-07
    Description: This book provides useful insight into how academics from diverse disciplinary backgrounds, such as science, engineering, technology, social science, policy, design, architecture, built environment, business, and management, have been conducting research into how to realise net zero emissions to address climate change. This book explores the ways in which countries around the world have pledged to achieve net zero emissions through decarbonisation processes. It presents the highest calibre research and impact activities carried out in the UK, Europe, North America, Australia, Asia, and Africa. Such activities include conceptualisation, opportunity identification, specific case studies, demonstration of proof of concepts, provision of evidence, education of the general public, and knowledge transfer to companies. Further to this, the chapters also bring to light personal career journeys to net zero by current and future international research leaders. From this book, readers will gain a full understanding of net zero research via multiple disciplinary pathways, be inspired by personal accounts, and will learn key methodologies, including quantitative and qualitative approaches. The diversity of authors and topics make the book widely applicable to a range of fields, and it will be of great interest to researchers, students, practitioners, and decision makers working towards the goals of net zero and decarbonisation.
    Keywords: Net Zero ; Net Zero emissions ; Decarbonisation ; Climate change ; Interdisciplinary education ; Carbon neutral ; 2050 ; Sustainability ; Sustainable consumption ; Sustainability transitions ; Sustainable fashion ; Engineering ; thema EDItEUR::A The Arts::AB The arts: general topics ; thema EDItEUR::A The Arts::AK Design, Industrial and commercial arts, illustration::AKP Product design ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THV Alternative and renewable energy sources and technology ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNP Pollution and threats to the environment::RNPG Climate change ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RP Regional and area planning::RPC Urban and municipal planning and policy ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GT Interdisciplinary studies::GTP Development studies ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBC Engineering: general ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBD Technical design::TBDG Ergonomics ; thema EDItEUR::P Mathematics and Science::PH Physics::PHD Classical mechanics::PHDY Energy ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBS Social groups, communities and identities::JBSD Urban communities ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDP Other manufacturing technologies
    Language: English
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  • 4
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    TU Delft OPEN Publishing
    Publication Date: 2024-03-23
    Description: The Cross Domain City of the Future Graduation Lab, situated in the Faculty of Architecture and the Built Environment at TU Delft, has been a pioneer in experimenting with a multidisciplinary approach to education on the built environment. Drawing upon this expertise over the past years, this book reflects on multidisciplinarity in the built environment and its implementation in education on the built environment. How should one approach multidisciplinarity in education and practice? What encompasses its core elements, benefits, and challenges? By addressing these questions, the book aims to inform students and practitioners within the realm of the built environment by sharing insights from experiences in multidisciplinary education. It presents eight conclusions regarding the future of multidisciplinary education and, thereby, seeks to contribute to a more humane and sustainable future for cities: 1.Process is central to multidisciplinary collaboration. Negotiating positions, ensuring an environment of respect, balance and open-mindedness, and setting a common vocabulary. 2.Multidisciplinarity can be a way to foster innovation. It triggers complementarity and confrontation. As with any innovation, there is potential for greater outcomes, but, at the same time, extra risks emerge. These need to be managed. 3.Multidisciplinarity could be better integrated into organisational structures. 4.Disciplinarity and multidisciplinarity are in mutual coexistence. They are inseparable. They can complement and contradict each other. 5.Problem precedes solution, not the opposite. Framing the problem, or ‘problematizing’, is a considerable share of the actual solution. This is particularly applicable to multidisciplinarity. 6.Multidisciplinarity is by nature composed of fluid boundaries. Navigating through an enormous diversity of perspectives requires agility, flexibility, independence, spirit of adventure and embracing uncertainty. 7.Professionals should be trained as ‘T-shape’: grounded in their field while able to dialogue with other fields. 8.Both generalists and specialists are needed. Education should provide opportunities for both.
    Keywords: City ; Future ; Multidisciplinarity ; Design ; Education ; Engineering ; Graduation Lab ; Built Environment ; Architecture ; Urban Design ; Management ; Geomatics ; Transport ; Infrastructure ; Logistics ; Collaboration ; thema EDItEUR::A The Arts::AM Architecture
    Language: English
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  • 5
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    Amsterdam University Press
    Publication Date: 2024-03-23
    Description: Techne;/Technology offers a penetrating, close look at the origins of the term techne;, which unleashed a revolution in cinema and media studies when it was first introduced and which continues to influence the study of film as the digital revolution rolls along. The contributors investigate the effects of technologies on major film debates and, moreover, how technologies have affected film theory and its key concepts.
    Keywords: Film Studies ; Communication Studies ; Engineering ; thema EDItEUR::A The Arts::AT Performing arts::ATF Films, cinema ; thema EDItEUR::A The Arts::AT Performing arts::ATJ Television ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBC Cultural and media studies::JBCT Media studies ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 6
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    Boydell & Brewer | James Currey an imprint of Boydell & Brewer
    Publication Date: 2024-03-29
    Description: No country has managed to develop beyond a subsistence economy without ensuring at least minimum access to electricity for the majority of its population. Yet many sub-Saharan African countries struggle to meet demand. Why is this, and what can be done to reduce energy poverty and further Africa's development? Examining the politics and processes surrounding electricity infrastructure, provision and reform, the author provides an overview of historical andcontemporary debates about access in the sub-continent, and explores the shifting role and influence of national governments and of multilateral agencies in energy reform decisions. He describes a challenging political environment for electricity supply, with African governments becoming increasingly frustrated with the rules and the processes of multilateral donors. Civil society also began to question reform choices, and governments in turn looked to new development partners, such as China, to chart a fresh path of energy transformation. Drawing on over fifteen years of research on Uganda, which has one of the lowest levels of access to electricity in Africa and has struggled to construct several, large hydroelectric dams on the Nile, Gore argues that there is a critical need to recognize how the changing political and social context in African countries, and globally, has affected the capacity to fulfil national energy goals, minimize energy poverty and transform economies.
    Keywords: Political Science ; African Studies ; Engineering ; bic Book Industry Communication::J Society & social sciences::JP Politics & government ; bic Book Industry Communication::T Technology, engineering, agriculture::TH Energy technology & engineering::THR Electrical engineering::THRB Power generation & distribution ; thema EDItEUR::J Society and Social Sciences::JP Politics and government ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THY Energy, power generation, distribution and storage
    Language: English
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  • 7
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    CLACSO
    Publication Date: 2024-04-14
    Description: Description not available.
    Keywords: Technology ; Engineering ; Political Science ; thema EDItEUR::U Computing and Information Technology::UB Information technology: general topics::UBW Internet: general works ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPH Political structure and processes::JPHV Political structures: democracy
    Language: Spanish
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  • 8
    Publication Date: 2024-04-11
    Description: Este libro indaga desde múltiples preguntas y perspectivas las transformaciones provocadas por el incremento descomunal del flujo de información generada por el uso masivo e intensivo de las tecnologías digitales. El estudio de las apropiaciones por parte de la sociedad configura un mosaico desigual y combinado de usos y empleos de las tecnologías digitales. ¿Cómo han impactado en los grupos sociales, económicos y generacionales los usos de las tecnologías? ¿Que desafíos entrañan y que problemas nuevos generan las herramientas cotidianas a través de las cuales conocemos y nos comunicamos con nuestro entorno y el mundo?
    Keywords: Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering
    Language: Spanish
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  • 9
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    University of Minnesota Press
    Publication Date: 2024-04-04
    Description: An investigation of how-to guides for sensor technologies Sensors are increasingly common within citizen-sensing and DIY projects, but these devices often require the use of a how-to guide. From online instructional videos for troubleshooting sensor installations to handbooks for using and abusing the Internet of Things, the how-to genres and formats of digital instruction continue to expand and develop. As the how-to proliferates, and instructions unfold through multiple aspects of technoscientific practices, Jennifer Gabrys asks why the how-to has become one of the prevailing genres of the digital. How to Do Things with Sensors explores the ways in which things are made do-able with and through sensors and further considers how worlds are made sense-able and actionable through the instructional mode of citizen-sensing projects. Forerunners: Ideas First Short books of thought-in-process scholarship, where intense analysis, questioning, and speculation take the lead
    Keywords: Science & Technology Studies ; General Science ; Engineering ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDR Impact of science and technology on society ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDA Philosophy of science ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering
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  • 10
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: Artificial intelligence is a term that refers to the ability to provide machines with human intelligence. In medicine it is becoming widely used. It finds application especially in the diagnostic and tumor fields. It is not yet able to replace the human brain, but several studies show how its support can be useful in making diagnoses and providing prognoses. This reprint addresses various satellite topics of this discipline, giving practical examples in various clinical fields. In addition, it highlights the strengths of this tool and proposes methods to improve its weaknesses by addressing issues such as increasing data sets and selecting the right features. It also addresses other innovative aspects that together with artificial intelligence can lead to improvements in surgery.
    Keywords: Artificial Intelligence ; Automatic ; Diagnostics ; Engineering ; Imaging ; Machine Learning ; Deep Learning ; Features ; Biomedics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
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  • 11
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    Pennsylvania State University Press
    Publication Date: 2024-03-27
    Description: Oil, like other fossil fuels, permeates every aspect of human existence. Yet it has been largely ignored by cultural critics, especially in the context of the Global South. Seeking to make visible not only the pervasiveness of oil in society and culture but also its power, Oil Fictions stages a critical intervention that aligns with the broader goals of the energy humanities.Exploring literature and film about petroleum as a genre of world literature, Oil Fictions focuses on the ubiquity of oil as well as the cultural response to petroleum in postcolonial states. The chapters engage with African, South American, South Asian, Iranian, and transnational petrofictions and cover topics such as the relationship of colonialism to the fossil fuel economy, issues of gender in the Thermocene epoch, and discussions of migration, precarious labor, and the petro-diaspora. This unique exploration includes testimonies of the oil encounter—through memoirs, journals, and interviews—from a diverse geopolitical grid, ranging from the Permian Basin to the Persian Gulf.By engaging with non-Western literary responses to petroleum in a concentrated, sustained way, this pathbreaking book illuminates the transnational dimensions of the discourse on oil. It will appeal to scholars and students working in literature and science studies, energy humanities, ecocriticism, petrocriticism, environmental humanities, and Anthropocene studies.In addition to the editors, the contributors to this volume include Henry Obi Ajumeze, Rebecca Babcock, Ashley Dawson, Sharae Deckard, Scott DeVries, Kristen Figgins, Amitav Ghosh, Corbin Hiday, Helen Kapstein, Micheal Angelo Rumore, Simon Ryle, Sheena Stief, Imre Szeman, Maya Vinai, and Wendy W. Walters.
    Keywords: Language & Literature ; Sustainability ; Engineering ; Environmental Science ; thema EDItEUR::D Biography, Literature and Literary studies::DS Literature: history and criticism::DSB Literary studies: general::DSBH Literary studies: c 1900 to c 2000 ; thema EDItEUR::D Biography, Literature and Literary studies::DS Literature: history and criticism::DSB Literary studies: general ; thema EDItEUR::D Biography, Literature and Literary studies::D Biography, Literature and Literary studies::DS Literature: history and criticism ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THF Fossil fuel technologies::THFP Petroleum technology ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNF Environmental management
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  • 12
    Publication Date: 2024-04-09
    Description: The role of fossil planktonic foraminifera as markers for biostratigraphical zonation and correlation underpins most drilling of marine sedimentary sequences and is key to hydrocarbon exploration. The first - and only - book to synthesize the whole biostratigraphic and geological usefulness of planktonic foraminifera, Biostratigraphic and Geological Significance of Planktonic Foraminifera unifies existing biostratigraphic schemes and provides an improved correlation reflecting regional biogeographies. Renowned micropaleontologist Marcelle K. Boudagher-Fadel presents a comprehensive analysis of existing data on fossil planktonic foraminifera genera and their phylogenetic evolution in time and space. This important text, now in its Second Edition, is in considerable demand and is now being republished by UCL Press.
    Keywords: Geology ; Paleontology ; Geography ; Agriculture ; Engineering ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RB Earth sciences::RBG Geology, geomorphology and the lithosphere ; thema EDItEUR::W Lifestyle, Hobbies and Leisure::WN Nature and the natural world: general interest::WNR Rocks, minerals and fossils: general interest ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RG Geography ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RB Earth sciences::RBX Palaeontology ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RB Earth sciences::RBG Geology, geomorphology and the lithosphere::RBGH Stratigraphy ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TV Agriculture and farming ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THF Fossil fuel technologies::THFP Petroleum technology
    Language: English
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  • 13
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    University of Minnesota Press
    Publication Date: 2024-04-04
    Description: Sensors are everywhere. Small, flexible, economical, and computationally powerful, they operate ubiquitously in environments. They compile massive amounts of data, including information about air, water, and climate. Never before has such a volume of environmental data been so broadly collected or so widely available. Grappling with the consequences of wiring our world, Program Earth examines how sensor technologies are programming our environments. As Jennifer Gabrys points out, sensors do not merely record information about an environment. Rather, they generate new environments and environmental relations. At the same time, they give a voice to the entities they monitor: to animals, plants, people, and inanimate objects. This book looks at the ways in which sensors converge with environments to map ecological processes, to track the migration of animals, to check pollutants, to facilitate citizen participation, and to program infrastructure. Through discussing particular instances where sensors are deployed for environmental study and citizen engagement across three areas of environmental sensing, from wild sensing to pollution sensing and urban sensing, Program Earth asks how sensor technologies specifically contribute to new environmental conditions. What are the implications for wiring up environments? How do sensor applications not only program environments, but also program the sorts of citizens and collectives we might become? Program Earth suggests that the sensor-based monitoring of Earth offers the prospect of making new environments not simply as an extension of the human but rather as new "technogeographies" that connect technology, nature, and people.
    Keywords: General Science ; Science & Technology Studies ; Engineering ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDA Philosophy of science ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDR Impact of science and technology on society ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering
    Language: English
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  • 14
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    CLACSO
    Publication Date: 2024-03-30
    Description: Gustavo Lins Riberio conjuga y tensiona la teoría con el trabajo de campo para desentrañar los significados que atribuyen los trabajadores a la construcción de Brasilia. Ello le permitirá reconstruir una memoria donde caben las penurias, los enojos, las broncas, las injusticias laborales, las solidaridades, las amistades, la familia, las lealtades, los sabores de las comidas, la música, la organización, el sindicato y los conflictos, en un todo desordenado pero legible a luz de la teoría. En definitiva, la experiencia de clase se puede leer en El capital de la esperanza de modo transversal, así como también las contradicciones del capitalismo, las políticas urbanistas, las condiciones de trabajo y demás campos problemáticos que han abordado las ciencias sociales. Las y los invitamos a leer —por primera vez o una vez más— esta obra magistral que nos permite comprender y complejizar la dinámica de la expansión capitalista.
    Keywords: Labor & Employment Relations ; Engineering ; History ; Latin American Studies ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics::KCF Labour / income economics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials ; thema EDItEUR::N History and Archaeology::NH History::NHK History of the Americas
    Language: Spanish
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  • 15
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    TU Delft OPEN Publishing
    Publication Date: 2024-03-29
    Description: Current systems design and decision management methodologies can be single-sided, ignoring or failing to capture the dynamic interplay between multi-stakeholder preferences (‘what they want’) and system performances (‘what they can’). In addition, these methodologies often contain fundamental modelling errors and do not provide single best-fit solutions. This leaves designers or decision-makers without unique answers to their problems. Above all, mainstream higher education primarily applies instructivist and research-based learning methods, and therefore does not adequately prepare students for designing solutions to future complex problems. This book introduces both a state-of-the-art participatory design methodology (Odesys), and a design-based learning concept (ODL), which together overcome the aforementioned issues. Odesys is a pure act of open design integration to confront conflicting socio-technical interests and is the key to unlocking these complexities to deliver socially responsible systems. Odesys’ design engine, the Preferendus, enables stakeholders to cooperatively identify their best-fit design synthesis. It employs a novel optimisation method that maximises the aggregated preferences, integrating sound mathematical and extended U-modelling via open technical-, social-, and purpose cycles. The art of ODL is a constructivist design-based and well-proven learning concept fostering students’ design capabilities to become open and persistent problem solvers. It is a reflective, creative, and engaged learning approach that opens human development and unlocks new knowledge and solutions. The author also introduces new management features such as the corporate social identifier (CSI), the ‘socio-eco’ threefold organization model and U-model based open loop management. Finally, the author places Odesys & ODL within the integrative context of empiricism, rationalism, spiritualism, and constructivism to unite the open design impulse. This book will be of interest to both academics and practitioners working in the field of complex systems design and managerial decision-making, and functions as a textbook on systems design and management for master students from diverse backgrounds.
    Keywords: Management ; Technology ; Engineering ; bic Book Industry Communication::J Society & social sciences::JN Education::JNV Educational equipment & technology, computer-aided learning (CAL) ; thema EDItEUR::J Society and Social Sciences::JN Education::JNV Educational equipment and technology, computer-aided learning (CAL)
    Language: English
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  • 16
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    CLACSO
    Publication Date: 2023-10-05
    Description: En junio del 2014 la comunidad Kukama de Cuninico, fue afectada por el derrame de 2500 barriles de petróleo. Como muchas otras comunidades nativas en la Amazonia, Cuninico está enfrascada en un contexto postdesastre agudizado por la ineficiencia estatal. Las dinámicas intrafamiliares y comunitarias, así como las expectativas a futuro de los que allí viven, han cambiado profundamente. En este contexto son las mujeres las que deben asumir más responsabilidades para enfrentar la crisis.
    Keywords: Environmental Science ; Sustainability ; Engineering ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNK Conservation of the environment ; bic Book Industry Communication::T Technology, engineering, agriculture::TH Energy technology & engineering::THF Fossil fuel technologies::THFP Petroleum technology
    Language: Spanish
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  • 17
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    UJ Press | UJ Press
    Publication Date: 2024-03-29
    Description: The book provides a rich, informative picture of the current state of student engagement evaluation, while also highlighting challenges and opportunities for future advances. A particular strength of this publication is its emphasis on the importance of taking evidence-based decisions, and showing how the South African Survey of Student Engagement (SASSE) can provide the evidence for well-informed changes in policy and practice in order to enhance student success." - Prof Magda Fourie-Malherbe, Stellenbosch University
    Keywords: Academics ; Academic achievement ; Academic advising ; Academic advisors ; Academic challenge ; Academic development ; Academic literacy ; Academic performance ; Academic support ; Access ; Academic staff (also see academics/Lecturers) ; Actionable ; Active learning ; Agency ; Aggregated ; Analyse ; Apply ; Ask questions ; Assessment ; Attitude ; Australasian Survey of Student Engagement (AUSSE) ; Beginning University Survey of Student Engagement (BUSSE) ; Benchmarking ; Bloom’s taxonomy ; Business ; economics and management ; Campus environment ; Capacity ; Career advisors ; Challenges ; Classroom activities ; Classroom Survey of Student Engagement (CLASSE) ; Co-curricular (also see extra-curricular) ; Cognitive ; Cognitive development ; Cognitive educational activities ; Cognitive functions ; Cognitive skills ; Collaborative learning ; Colleges ; Community college ; Comprehensive universities ; Conditional formatting ; Contextual ; Contextual challenges ; Contextualised ; Council on Higher Education (CHE) ; Course (module/subject) ; Critical thinking ; Culture ; Curriculum ; Data ; Data-informed ; Decision-making ; Decolonisation ; Deep learning ; Department chairs (heads of departments) ; Department of Higher Education and Training (DHET) ; Development ; Developmental outcomes ; Diagnostic ; Disaggregating ; Discussions ; Discussion with diverse others ; Dropout ; Education outcomes ; Effective educational behaviours ; Effective educational practices ; Effective leadership ; Effective teaching practices ; Empirical ; Engagement – also see Student Engagement ; Engineering ; Equity ; Equitable outcomes ; Evaluate ; Evidence ; Evidence-based ; Expectations ; Expected academic difficulty ; Expected academic perseverance ; Experiential learning ; Experience with staff ; Extended degree ; Extended curricula ; Extra-curricular (also see co-curricular) ; Financial Stress Scale ; First-generation ; First-year ; Food ; Food insecurity ; Frequency ; Freshman myth ; Gender ; Graduate attributes (Learning outcomes) ; Group work ; Heads of departments ; High-Impact practices ; Higher education outcomes ; Higher-Order Learning ; Holistic ; Humanities ; Incentive ; Indicators ; Innovation ; Innovative ; Instructional paradigm ; Interactions ; Interventions ; Institutional culture ; Institutional performance ; Institutional research ; Institutional researchers ; Institution-wide approaches ; Interpersonal relationships ; Interpersonal skills ; Intersectional ; Intersectionality ; Irish Survey of Student Engagement (ISSE) ; Knowledge ; Knowledge society ; Language ; Law ; Leaders ; Leadership (management/university leadership) ; Learning ; Learning environments ; Learning facilitator ; Learning outcomes ; Learning paradigm ; Learning strategies ; Learning with peers ; Lecturer Survey of Student Engagement (LSSE) ; Lecturers (also see academics/academic staff) ; Librarians ; Management (University leaders and Leadership) ; Mathematics ; Memorisation ; Mentor ; Mentoring ; Mentorship ; Mission ; Module (course/subject) ; Motivation ; National Benchmark Tests (NBT) ; National Benchmark Test Project (NBTP) ; National Development Plan ; National Survey of Student Engagement (NSSE) ; Natural and Agricultural Sciences ; Next Generation of Academics Programme (nGAP) ; Numeracy development ; Off-campus ; On-campus ; Online resources ; Pathways ; Peer learning (also see Tutor) ; Pedagogical approaches ; Pedagogical contexts ; Pedagogical environments ; Pedagogical experiences ; Pedagogical innovation ; Pedagogical practices ; Pedagogical relationship ; Pedagogical responsiveness ; Pedagogies ; Perceived academic preparation ; Perceived preparedness ; Persistence ; Policies ; Policy ; Policy makers ; Practical significance ; Practical work ; Preparing for class ; Professional development ; Professionals ; Professional staff ; Quadrant ; Quality ; Quality assurance ; Quality of interactions ; Quantitative reasoning ; Reflection ; Reflective and integrative learning ; Relationships ; Research ; Responsiveness ; Resources ; Retention ; Science ; engineering and technology ; Self-reflection ; Senior students ; Service learning ; Social sciences ; Socio-economic ; South African Survey(s) of Student Engagement (SASSE) ; Staff development (also academic development and lecturer development) ; Stakeholder ; Strategies ; Statistical ; Student affairs ; Student behaviour ; Student bodies ; Student data ; Student development ; Student engagement ; Student evaluation ; Student financial aid ; Student involvement ; Student learning ; Student life ; Student needs ; Student outcomes ; Student organisations ; Student perspective ; Student participation ; Student performance ; Student persistence ; Student retention ; Student responses ; Student societies ; Student-staff interaction ; Student success ; Student views ; Student voice ; Success rates ; Subject (course/module) ; Support services ; Support staff ; Supportive campus ; Supportive environment ; Synthesise ; Systemic perspective ; Systemic understanding ; Teaching ; Teaching and learning ; Techniques ; Time ; Time management ; Traditional universities ; Transformation ; Transformative ; Transition ; Tutor ; Tutorials ; Undergraduate research ; Underprepared ; United States ; University Capacity Development Grant (University Capacity Development Programme) ; Universities ; Universities of Technology ; University leaders ; Unrealistic ; Well-being ; bic Book Industry Communication::J Society & social sciences::JN Education::JNM Higher & further education, tertiary education ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education
    Language: English
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    University of North Carolina Press
    Publication Date: 2024-04-02
    Description: White working-class conservatives have played a decisive role in American history, particularly in their opposition to social justice movements, radical critiques of capitalism, and government help for the poor and sick. While this pattern is largely seen as a post-1960s development, Poor Man's Fortune tells a different story, excavating the long history of white working-class conservatism in the century from the Civil War to World War II. With a close study of metal miners in the Tri-State district of Kansas, Missouri, and Oklahoma, Jarod Roll reveals why successive generations of white, native-born men willingly and repeatedly opposed labor unions and government-led health and safety reforms, even during the New Deal. With painstaking research, Roll shows how the miners' choices reflected a deep-seated, durable belief that hard-working American white men could prosper under capitalism, and exposes the grim costs of this view for these men and their communities, for organized labor, and for political movements seeking a more just and secure society. Roll's story shows how American inequalities are in part the result of a white working-class conservative tradition driven by grassroots assertions of racial, gendered, and national privilege.
    Keywords: History ; American Studies ; Labor & Employment Relations ; Engineering ; thema EDItEUR::N History and Archaeology::NH History::NHK History of the Americas ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNX Industrial relations, occupational health and safety::KNXN Industrial arbitration and negotiation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTU Mining technology and engineering
    Language: English
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  • 19
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    Springer Nature
    Publication Date: 2021-02-10
    Description: Resilience has become an important topic on the safety research agenda and in organizational practice. Most empirical work on resilience has been descriptive, identifying characteristics of work and organizing activity which allow organizations to cope with unexpected situations. Fewer studies have developed testable models and theories that can be used to support interventions aiming to increase resilience and improve safety. In addition, the absent integration of different system levels from individuals, teams, organizations, regulatory bodies, and policy level in theory and practice imply that mechanisms through which resilience is linked across complex systems are not yet well understood. Scientific efforts have been made to develop constructs and models that present relationships; however, these cannot be characterized as sufficient for theory building. There is a need for taking a broader look at resilience practices as a foundation for developing a theoretical framework that can help improve safety in complex systems. This book does not advocate for one definition or one field of research when talking about resilience; it does not assume that the use of resilience concepts is necessarily positive for safety. We encourage a broad approach, seeking inspiration across different scientific and practical domains for the purpose of further developing resilience at a theoretical and an operational level of relevance for different high-risk industries. The aim of the book is twofold: 1. To explore different approaches for operationalization of resilience across scientific disciplines and system levels. 2. To create a theoretical foundation for a resilience framework across scientific disciplines and system levels. By presenting chapters from leading international authors representing different research disciplines and practical fields we develop suggestions and inspiration for the research community and practitioners in high-risk industries. This book is Open Access under a CC-BY licence. ; Explores different approaches for operationalization of resilience across scientific disciplines and system levels Creates a theoretical foundation for a resilience framework across scientific disciplines and system levels Develops suggestions and inspiration for the research community and practitioners in high-risk industries Presents chapters from leading international authors representing different research disciplines and practical fields
    Keywords: Engineering ; Quality control ; Reliability ; Industrial safety ; Health economics ; Environmental management ; Health informatics ; Organization ; Planning ; Health care management ; Health services administration ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCQ Health economics ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJU Organizational theory & behaviour ; bic Book Industry Communication::M Medicine::MB Medicine: general issues::MBG Medical equipment & techniques ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNF Environmental management ; bic Book Industry Communication::T Technology, engineering, agriculture::TG Mechanical engineering & materials::TGP Production engineering::TGPR Reliability engineering
    Language: English
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  • 20
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    Springer Nature
    Publication Date: 2024-03-25
    Description: This open access book presents a selection of the best contributions to the Digital Cities 9 Workshop held in Limerick in 2015, combining a number of the latest academic insights into new collaborative modes of city making that are firmly rooted in empirical findings about the actual practices of citizens, designers and policy makers. It explores the affordances of new media technologies for empowering citizens in the process of city making, relating examples of bottom-up or participatory practices to reflections about the changing roles of professional practitioners in the processes, as well as issues of governance and institutional policymaking. ;
    Keywords: Engineering ; Electrical engineering ; Regional planning ; Urban planning ; User interfaces (Computer systems) ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RP Regional and area planning ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYZ Human–computer interaction::UYZG User interface design and usability
    Language: English
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  • 21
    Publication Date: 2024-04-07
    Description: This open access book contains a structured collection of the complete solutions of all essential axisymmetric contact problems. Based on a systematic distinction regarding the type of contact, the regime of friction and the contact geometry, a multitude of technically relevant contact problems from mechanical engineering, the automotive industry and medical engineering are discussed. In addition to contact problems between isotropic elastic and viscoelastic media, contact problems between transversal-isotropic elastic materials and functionally graded materials are addressed, too. The optimization of the latter is a focus of current research especially in the fields of actuator technology and biomechanics. The book takes into account adhesive effects which allow access to contact-mechanical questions about micro- and nano-electromechanical systems. Solutions of the contact problems include both the relationships between the macroscopic force, displacement and contact length, as well as the stress and displacement fields at the surface and, if appropriate, within the half-space medium. Solutions are always obtained with the simplest available method - usually with the method of dimensionality reduction (MDR) or approaches which use the solution of the non-adhesive normal contact problem to solve the respective contact problem.
    Keywords: Engineering ; Mechanics ; Mechanics, Applied ; Mechanics ; Applied mathematics ; Engineering mathematics ; thema EDItEUR::P Mathematics and Science::PH Physics::PHD Classical mechanics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBJ Maths for engineers ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science::TGMD Engineering: Mechanics of solids
    Language: English
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-01-31
    Description: This edited book presents new results in the area of algorithm development for different types of scheduling problems. In eleven chapters, algorithms for single machine problems, flow-shop and job-shop scheduling problems (including their hybrid (flexible) variants), the resource-constrained project scheduling problem, scheduling problems in complex manufacturing systems and supply chains, and workflow scheduling problems are given. The chapters address such subjects as insertion heuristics for energy-efficient scheduling, the re-scheduling of train traffic in real time, control algorithms for short-term scheduling in manufacturing systems, bi-objective optimization of tortilla production, scheduling problems with uncertain (interval) processing times, workflow scheduling for digital signal processor (DSP) clusters, and many more.
    Keywords: QA75.5-76.95 ; QA1-939 ; Scheduling under Resource Constraints ; Enumerative Algorithms ; Scheduling under Uncertainty ; Assembly Scheduling ; Timetabling ; Approximation Algorithms ; Scheduling Problems in Logistics ; Complex Scheduling Problems ; Engineering ; Complexity Issues ; Scheduling Heuristics and Metaheuristics ; Agent Based Scheduling ; Just-in-Time Scheduling ; Real-Time Scheduling ; Scheduling Problems in Segments of a Supply Chain ; Healthcare ; Evolutionary Algorithms ; Energy Management etc. ; Transport ; Vehicle Routing ; Sports
    Language: English
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  • 23
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    Springer Nature
    Publication Date: 2024-04-11
    Description: Automatisiertes Fahren wird aktuell auf allen Ebenen diskutiert. Dieses Open Access Buch greift das Thema aus Sicht des ÖPNV auf und stellt Chancen und Risiken des Einsatzes automatisierter Shuttlebusse im Nahverkehr dar. Am Beispiel Bad Birnbach/Niederbayern wird gezeigt, welche Herausforderungen bei der Einführung eines solchen Services zu erwarten sind und wie diese gelöst werden können. Dabei fokussiert sich das Buch auf die Vermittlung von im Feld erhobenen Daten, z.B. zu technischen Schwierigkeiten, Erfahrungsberichten von Anwohnern und Gästen, Akzeptanz in der Bevölkerung, infrastrukturellen Anforderungen, etc. Konkrete Handlungsempfehlungen für Städteplaner, ÖPNV-Betreiber/-Strategen oder Kommunen, die eine Einführung automatisierter Busse in Erwägung ziehen, runden das Werk ab.
    Keywords: Engineering ; Automotive engineering ; Transportation engineering ; Traffic engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNH Highway and traffic engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TR Transport technology and trades::TRC Automotive technology and trades
    Language: German
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  • 24
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    Taylor & Francis | CRC Press
    Publication Date: 2022-04-28
    Description: As technological advancements widen the scope of applications for biomicroelectromechanical systems (BioMEMS or biomicrosystems), the field continues to have an impact on many aspects of life science operations and functionalities. Because BioMEMS research and development require the input of experts who use different technical languages and come from varying disciplines and backgrounds, scientists and students can avoid potential difficulties in communication and understanding only if they possess a skill set and understanding that enables them to work at the interface of engineering and biosciences. Keeping this duality in mind throughout, BioMEMS: Science and Engineering Perspectives supports and expedites the multidisciplinary learning involved in the development of biomicrosystems. Divided into nine chapters, it starts with a balanced introduction of biological, engineering, application, and commercialization aspects of the field. With a focus on molecules of biological interest, the book explores the building blocks of cells and viruses, as well as molecules that form the self-assembled monolayers (SAMs), linkers, and hydrogels used for making different surfaces biocompatible through functionalization. The book also discusses: Different materials and platforms used to develop biomicrosystems Various biological entities and pathogens (in ascending order of complexity) The multidisciplinary aspects of engineering bioactive surfaces Engineering perspectives, including methods of manufacturing bioactive surfaces and devices Microfluidics modeling and experimentation Device level implementation of BioMEMS concepts for different applications. Because BioMEMS is an application-driven field, the book also highlights the concepts of lab-on-a-chip (LOC) and micro total analysis system (μTAS), along with their pertinence to the emerging point-of-care (POC) and point-of-need (PON) applications.
    Keywords: BioMEMS ; Engineering ; Perspectives ; Science ; bic Book Industry Communication::M Medicine::MF Pre-clinical medicine: basic sciences ; bic Book Industry Communication::T Technology, engineering, agriculture::TC Biochemical engineering::TCB Biotechnology ; bic Book Industry Communication::M Medicine::MQ Nursing & ancillary services::MQW Biomedical engineering ; bic Book Industry Communication::T Technology, engineering, agriculture::TJ Electronics & communications engineering::TJF Electronics engineering ; bic Book Industry Communication::T Technology, engineering, agriculture::TG Mechanical engineering & materials::TGM Materials science
    Language: English
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    Springer Nature
    Publication Date: 2024-04-11
    Description: This open access book comprises 10 high-level papers on research and innovation within the Flexitranstore Project that were presented at the FLEXITRANSTORE special session organized as part of the 21st International Symposium on High Voltage Engineering. FLEXITRANSTORE (An Integrated Platform for Increased FLEXIbility in smart TRANSmission grids with STORage Entities and large penetration of Renewable Energy Sources) aims to contribute to the development of a pan-European transmission network with high flexibility and high interconnection levels. This will facilitate the transformation of the current energy production mix by hosting an increasing share of renewable energy sources. Novel smart grid technologies, control and storage methods, and new market approaches will be developed, installed, demonstrated, and tested introducing flexibility to the European power system. FLEXITRANSTORE is developing a next-generation Flexible Energy Grid (FEG) that will be integrated into the European Internal Energy Market (IEM) through the valorization of flexibility services. This FEG addresses the capabilities of a power system to maintain continuous service in the face of rapid and large swings in supply or demand. As such, a wholesale market infrastructure and new business models within this integrated FEG must be upgraded for network players, and offer incentives for new ones to join, while at the same time demonstrating new business perspectives for cross-border resource management and energy trading.
    Keywords: Engineering ; Power electronics ; Electronics ; Microelectronics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering
    Language: English
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  • 26
    Publication Date: 2024-04-11
    Description: This book covers new advances in the field of impedance spectroscopy including fundamentals, methods and applications. It releases selected extended and peer reviewed scientific contributions from the International Workshop on Impedance Spectroscopy (IWIS 2017) focussing on detailed information about recent scientific research results in electrochemistry and battery research, bioimpedance measurement, sensors, system design, signal processing.
    Keywords: TA1-2040 ; International Workshop on Impedance Spectroscopy ; Engineering ; Electrochemistry and Battery Research ; Bioimpedance Measurement ; Sensors ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
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    Taylor & Francis | Routledge
    Publication Date: 2024-03-29
    Description: This timely volume brings together a range of international scholars to analyse cultural, political, and individual factors which contribute to the continued global issue of female underrepresentation in STEM study and careers. Offering a comparative approach to examining gender equity in STEM fields across countries including the UK, Germany, the United States, Hong Kong, Taiwan, South Africa, and China, the volume provides a thematic breakdown of institutional trends and national policies that have successfully improved gender equity in STEM at institutions of higher education. Offering case studies that demonstrate how policies interact with changing social and cultural norms, and impact women’s choices and experiences in relation to the uptake and continuation of STEM study at the undergraduate level, the volume highlights new directions for research and policy to promote gender equity in STEM at school, university, and career levels. Contributing to the United Nations’ (UN) 2030 Agenda for Sustainable Development, this text will benefit researchers, academics, and educators with an interest in science education, higher education, and gender equity in STEM fields. The text will also support further discussion and reflection around multicultural education, educational policy and politics, and the sociology of education more broadly.
    Keywords: Access ; Chilly culture in STEM ; Diversity ; discrimination ; Engineering ; female agency ; Gender equality ; Gender equity ; gendered norms ; gender disparities ; Higher education ; Inclusion ; inequalities ; leaky pipeline in STEM ; Math ; Mathematics ; Minorities ; National Science Foundation (NSF) ; ProActive Network (WEPAN) ; participation ; Science ; STEM ; STEM careers ; STEM education ; STEM labor market ; STEM tertiary education ; STEM workforce ; Sustainable Development Goals ; Technology ; UN SDG ; bic Book Industry Communication::J Society & social sciences::JN Education::JNM Higher & further education, tertiary education ; bic Book Industry Communication::J Society & social sciences::JN Education ; bic Book Industry Communication::J Society & social sciences::JN Education::JNF Educational strategies & policy ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education ; thema EDItEUR::J Society and Social Sciences::JN Education ; thema EDItEUR::J Society and Social Sciences::JN Education::JNF Educational strategies and policy
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  • 28
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    Springer Nature
    Publication Date: 2024-04-06
    Description: This open access book presents theoretical framework and sample applications of variant construction. The first part includes the components variant logic, variant measurements, and variant maps, while the second part covers sample applications such as variation with functions, variant stream ciphers, quantum interference, classical/quantum random sequences, whole DNA sequences, and multiple-valued pulse sequences. Addressing topics ranging from logic and measuring foundation to typical applications and including various illustrated maps, it is a valuable guide for theoretical researchers in discrete mathematics; computing-, quantum- and communication scientists; big data engineers; as well as graduate and upper undergraduate students.
    Keywords: Engineering ; Electronic circuits ; Logic design ; Electronic circuits ; Information theory ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBW Applied mathematics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFC Electronics: circuits and components ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYF Computer architecture and logic design
    Language: English
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  • 29
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    Springer Nature
    Publication Date: 2024-03-29
    Description: This open access book presents theoretical and practical research relating to the vast, publicly financed program for the construction of new schools and the reorganization of existing educational buildings in Italy. This transformative process aims to give old buildings a fresh identity, to ensure that facilities are compliant with the new educational and teaching models, and to improve both energy efficiency and structural safety with respect to seismic activity. The book is divided into three sections, the first of which focuses on the social role of the school as a civic building that can serve the needs of the community. Innovations in both design and construction processes are then analyzed, paying special attention to the Building Information Modeling (BIM) strategy as a tool for the integration of different disciplines. The final section is devoted to the built heritage and tools, technologies, and approaches for the upgrading of existing buildings so that they meet the new regulations on building performance. The book will be of interest to all who wish to learn about the latest insights into the challenges posed by, and the opportunities afforded by, a comprehensive school building and renovation program.
    Keywords: Engineering ; Buildings—Design and construction ; Building ; Construction ; Engineering, Architectural ; Energy efficiency ; Building materials ; Materials science ; Schools ; bic Book Industry Communication::J Society & social sciences::JN Education::JNL Schools ; bic Book Industry Communication::T Technology, engineering, agriculture::TG Mechanical engineering & materials::TGM Materials science::TGMT Testing of materials ; bic Book Industry Communication::T Technology, engineering, agriculture::TH Energy technology & engineering ; bic Book Industry Communication::T Technology, engineering, agriculture::TN Civil engineering, surveying & building::TNK Building construction & materials ; thema EDItEUR::J Society and Social Sciences::JN Education::JNL Schools and pre-schools ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science::TGMT Testing of materials ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials
    Language: English
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    University of Ottawa Press / Les Presses de l’Université d’Ottawa
    Publication Date: 2022-04-28
    Description: Canada is a prosperous country, but this prosperity is being stressed by demographics, pressures on the public purse, and low productivity growth. To maintain the nation's high quality of life, prosperity must increase while remaining sustainable. Combining Tom Brzustowski's extensive knowledge of government, industry, and academia, 〈i〉The Way Ahead〈/i〉, articulates a strategy for moving the Canadian economy towards higher-value products based on research and development, describing the practical steps government, industry and academia must take to improve things in the short term and prepare strategically for the long term. He recommends increasing productivity growth by embracing an economy based on innovation, prioritizing research and development, marketing Canadian products internationally, and encouraging entrepreneurial activities in all sectors. Ultimately, increasing prosperity will require a new level of understanding, strategic coherence, and mutual support between the private and public sectors in Canada, a challenge that the author feels Canada is prepared to and absolutely must face.
    Keywords: economy ; canada ; Basic research ; Commodity ; Engineering ; Entrepreneurship ; Gross domestic product ; Research and development ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics
    Language: English
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  • 31
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    Springer Nature
    Publication Date: 2024-04-01
    Description: This open access book describes modern applications of computational human modeling with specific emphasis in the areas of neurology and neuroelectromagnetics, depression and cancer treatments, radio-frequency studies and wireless communications. Special consideration is also given to the use of human modeling to the computational assessment of relevant regulatory and safety requirements. Readers working on applications that may expose human subjects to electromagnetic radiation will benefit from this book’s coverage of the latest developments in computational modelling and human phantom development to assess a given technology’s safety and efficacy in a timely manner. Describes construction and application of computational human models including anatomically detailed and subject specific models; Explains new practices in computational human modeling for neuroelectromagnetics, electromagnetic safety, and exposure evaluations; Includes a survey of modern applications for which computational human models are critical; Describes cellular-level interactions between the human body and electromagnetic fields.
    Keywords: Engineering ; Biomedical engineering ; Electronic circuits ; Microwaves ; Optical engineering ; thema EDItEUR::M Medicine and Nursing::MQ Nursing and ancillary services::MQW Biomedical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFC Electronics: circuits and components ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFN Microwave technology
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    Springer Nature
    Publication Date: 2024-04-16
    Description: The objective of this book is to help at-risk organizations to decipher the “safety cloud”, and to position themselves in terms of operational decisions and improvement strategies in safety, considering the path already travelled, their context, objectives and constraints. What link can be established between safety culture and safety models in order to increase safety within companies carrying out dangerous activities? First, while the term “safety culture” is widely shared among the academic and industrial world, it leads to various interpretations and therefore different positioning when it comes to assess, improve or change it. Many safety theories, concepts, and models coexist today, being more or less appealing and/or directly useful to the industry. How, and based on which criteria, to choose from the available options? These are some of the questions addressed in this book, which benefits from the expertise of its worldwide famous authors in several industrial sectors.
    Keywords: Engineering ; Quality control ; Reliability ; Industrial safety ; Economic sociology ; Industrial psychology ; Industrial organization ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology::JHBL Sociology: work and labour ; thema EDItEUR::J Society and Social Sciences::JM Psychology::JMJ Occupational and industrial psychology ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics::KCD Economics of industrial organization ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering::TGPR Reliability engineering
    Language: English
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    Purdue University Press
    Publication Date: 2022-05-02
    Description: Engineering design is a fundamental problem-solving model used by the discipline. Effective problem-solving requires the ability to find and incorporate quality information sources. To teach courses in this area effectively, educators need to understand the information needs of engineers and engineering students and their information gathering habits. This book provides essential guidance for engineering faculty and librarians wishing to better integrate information competencies into their curricular offerings. The treatment of the subject matter is pragmatic, accessible, and engaging. Rather than focusing on specific resources or interfaces, the book adopts a process-driven approach that outlasts changing information technologies. After several chapters introducing the conceptual underpinnings of the book, a sequence of contributions go into detail about specific steps in the design process and the information needs for those steps.
    Keywords: Engineering ; Teaching ; design ; engineering ; education ; technology ; learning ; bic Book Industry Communication::J Society & social sciences::JN Education::JNT Teaching skills & techniques
    Language: English
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    Springer Nature
    Publication Date: 2021-02-10
    Description: This open access book explores the strategic importance and advantages of adopting multidisciplinary and multiscalar approaches of inquiry and intervention with respect to the built environment, based on principles of sustainability and circular economy strategies. A series of key challenges are considered in depth from a multidisciplinary perspective, spanning engineering, architecture, and regional and urban economics. These challenges include strategies to relaunch socioeconomic development through regenerative processes, the regeneration of urban spaces from the perspective of resilience, the development and deployment of innovative products and processes in the construction sector in order to comply more fully with the principles of sustainability and circularity, and the development of multiscale approaches to enhance the performance of both the existing building stock and new buildings. The book offers a rich selection of conceptual, empirical, methodological, technical, and case study/project-based research. It will be of value for all who have an interest in regeneration of the built environment from a circular economy perspective.
    Keywords: Engineering ; Buildings—Design and construction ; Building ; Construction ; Engineering, Architectural ; Sociology, Urban ; Economic development—Environmental aspects ; Sustainable development ; Environmental economics ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCN Environmental economics ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNU Sustainability ; bic Book Industry Communication::T Technology, engineering, agriculture::TN Civil engineering, surveying & building::TNK Building construction & materials
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  • 35
    Publication Date: 2024-04-11
    Description: This open access work presents selected results from the European research and innovation project IMPROVE which yielded novel data-based solutions to enhance machine reliability and efficiency in the fields of simulation and optimization, condition monitoring, alarm management, and quality prediction.
    Keywords: Engineering ; Quality control ; Reliability ; Industrial safety ; Robotics ; Automation ; Input-output equipment (Computers) ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering::TGPR Reliability engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFM Automatic control engineering::TJFM1 Robotics ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications
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  • 36
    Publication Date: 2021-02-10
    Description: This open access book offers a timely guide to challenges and current practices to permanently plug and abandon hydrocarbon wells. With a focus on offshore North Sea, it analyzes the process of plug and abandonment of hydrocarbon wells through the establishment of permanent well barriers. It provides the reader with extensive knowledge on the type of barriers, their functioning and verification. It then discusses plug and abandonment methodologies, analyzing different types of permanent plugging materials. Last, it describes some tests for verifying the integrity and functionality of installed permanent barriers. The book offers a comprehensive reference guide to well plugging and abandonment (P&A) and well integrity testing. The book also presents new technologies that have been proposed to be used in plugging and abandoning of wells, which might be game-changing technologies, but they are still in laboratory or testing level. Given its scope, it addresses students and researchers in both academia and industry. It also provides information for engineers who work in petroleum industry and should be familiarized with P&A of hydrocarbon wells to reduce the time of P&A by considering it during well planning and construction.
    Keywords: Engineering ; Ocean engineering ; Geotechnical engineering ; Energy policy ; Energy and state ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences ; bic Book Industry Communication::T Technology, engineering, agriculture::TH Energy technology & engineering ; bic Book Industry Communication::T Technology, engineering, agriculture::TT Other technologies & applied sciences::TTS Marine engineering::TTSH Offshore engineering
    Language: English
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  • 37
    Publication Date: 2024-04-09
    Description: Coding; Communications; Engineering; Networks; Information Theory; Algorithms
    Keywords: Coding ; Communications ; Engineering ; Networks ; Information Theory ; Algorithms ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 38
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    Taylor & Francis
    Publication Date: 2024-04-11
    Description: This modern treatise on compact models for circuit computer-aided design (CAD) presents industry standard models for bipolar-junction transistors (BJTs), metal-oxide-semiconductor (MOS) field-effect-transistors (FETs), FinFETs, and tunnel field-effect transistors (TFETs), along with statistical MOS models. Featuring exercise problems at the end of each chapter and extensive references at the end of the book, the text supplies fundamental and practical knowledge necessary for efficient integrated circuit (IC) design using nanoscale devices. It ensures even those unfamiliar with semiconductor physics gain a solid grasp of compact modeling concepts.
    Keywords: Engineering ; Electrical Engineering ; computer-aided design ; CAD ; compact modeling ; MOSFET ; Circuit Simulation ; compact models ; SPICE model ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFC Electronics: circuits and components
    Language: English
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  • 39
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    Springer Nature
    Publication Date: 2024-04-11
    Description: This open access book presents nine outstanding doctoral dissertations in Information Technology from the Department of Electronics, Information and Bioengineering, Politecnico di Milano, Italy. Information Technology has always been highly interdisciplinary, as many aspects have to be considered in IT systems. The doctoral studies program in IT at Politecnico di Milano emphasizes this interdisciplinary nature, which is becoming more and more important in recent technological advances, in collaborative projects, and in the education of young researchers. Accordingly, the focus of advanced research is on pursuing a rigorous approach to specific research topics starting from a broad background in various areas of Information Technology, especially Computer Science and Engineering, Electronics, Systems and Controls, and Telecommunications. Each year, more than 50 PhDs graduate from the program. This book gathers the outcomes of the nine best theses defended in 2018-19 and selected for the IT PhD Award. Each of the nine authors provides a chapter summarizing his/her findings, including an introduction, description of methods, main achievements and future work on the topic. Hence, the book provides a cutting-edge overview of the latest research trends in Information Technology at Politecnico di Milano, presented in an easy-to-read format that will also appeal to non-specialists.
    Keywords: Engineering ; Electrical engineering ; Control engineering ; Data structures (Computer science) ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFM Automatic control engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMB Algorithms and data structures ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFM Automatic control engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMB Algorithms and data structures
    Language: English
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  • 40
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    Springer Nature
    Publication Date: 2024-04-11
    Description: This open access book, authored by a world-leading researcher in this field, describes fundamentals of dynamic spectrum management, provides a systematic overview on the enabling technologies covering cognitive radio, blockchain, and artificial intelligence, and offers valuable guidance for designing advanced wireless communications systems. This book is intended for a broad range of readers, including students and professionals in this field, as well as radio spectrum policy makers.
    Keywords: Engineering ; Electrical engineering ; Wireless communication systems ; Mobile communication systems ; Computer organization ; Computers ; Artificial intelligence ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications::TJKW WAP (wireless) technology ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications::TJKW WAP (wireless) technology ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence
    Language: English
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  • 41
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    Springer Nature
    Publication Date: 2024-04-11
    Description: This Open Access proceedings presents new approaches to Machine Learning for Cyber Physical Systems, experiences and visions. It contains some selected papers from the international Conference ML4CPS – Machine Learning for Cyber Physical Systems, which was held in Karlsruhe, October 23-24, 2018. Cyber Physical Systems are characterized by their ability to adapt and to learn: They analyze their environment and, based on observations, they learn patterns, correlations and predictive models. Typical applications are condition monitoring, predictive maintenance, image processing and diagnosis. Machine Learning is the key technology for these developments.
    Keywords: Engineering ; Computational intelligence ; Computer organization ; Electrical engineering ; Data mining ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::U Computing and Information Technology::UN Databases::UNF Data mining ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::U Computing and Information Technology::UN Databases::UNF Data mining ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence
    Language: English
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  • 42
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    Springer Nature
    Publication Date: 2021-02-10
    Description: This open access book summarizes research being pursued within the Manutelligence project, the goal of which is to help enterprises develop smart, social and flexible products with high value added services. Manutelligence has improved Product and Service Design by developing suitable models and methods, and connecting them through a modular, collaborative and secure ICT Platform. The use of real data collected in real time by Internet of Things (IoT) technologies underpins the design of product-service systems and makes it possible to monitor them throughout their life cycle. Available data allows costs and sustainability issues to be more accurately measured and simulated in the form of Life Cycle Cost (LCC) and Life Cycle Assessment (LCA). Analysing data from IoT systems and sharing LCC and LCA information via the ICT Platform can help to accelerate the design of product-service systems, reduce costs and better understand customer needs. Industrial partners involved in Manutelligence provide a clear overview of the project’s outcomes, and demonstrate how its technological solutions can be used to improve the design of product-service systems and the management of product-service life cycles.
    Keywords: Engineering ; Manufactures ; Computational intelligence ; Artificial intelligence ; Service industries ; bic Book Industry Communication::K Economics, finance, business & management::KN Industry & industrial studies::KNS Service industries ; bic Book Industry Communication::T Technology, engineering, agriculture::TG Mechanical engineering & materials::TGP Production engineering ; bic Book Industry Communication::U Computing & information technology::UY Computer science::UYQ Artificial intelligence
    Language: English
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  • 43
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    transcript Verlag
    Publication Date: 2022-05-02
    Description: What role does gender play in scientific research and the development of technologies? This book provides methodological expertise, research experiences and empirical findings in the dynamic field of Science and Technology Studies. The authors, coming from computer science, social sciences, or cultural studies of science, discuss how to ask questions about gender and give examples for the application in interdisciplinary research, development and teaching. Topics range from the design of information and communication technologies, epistemologies of biology and chemistry to teaching mathematics and professional processes in engineering. Contributions by Anne Balsamo, Wendy Faulkner, Rebecca Jordan-Young, Barbara Orland, Els Rommes, and others.
    Keywords: Sociology ; Gender ; Innovation Research ; Science ; Technology ; Engineering ; Gender Studies ; Sociology of Science ; Sociology of Technology ; Cultural Studies ; Sociology ; Gender ; Innovation Research ; Science ; Technology ; Engineering ; Gender Studies ; Sociology of Science ; Sociology of Technology ; Cultural Studies ; Epistemology ; Feminism ; London ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFS Social groups::JFSJ Gender studies, gender groups
    Language: English
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  • 44
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    CRC Press
    Publication Date: 2024-04-11
    Description: This book brings together new developments in the area of strain-engineered MOSFETs using high-mibility substrates such as SIGe, strained-Si, germanium-on-insulator and III-V semiconductors into a single text which will cover the materials aspects, principles, and design of advanced devices, their fabrication and applications. The book presents a full TCAD methodology for strain-engineering in Si CMOS technology involving data flow from process simulation to systematic process variability simulation and generation of SPICE process compact models for manufacturing for yield optimization.
    Keywords: Engineering ; Electrical Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering
    Language: English
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  • 45
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    Springer Nature
    Publication Date: 2024-04-04
    Description: Dieses Open Access Buch widmet sich dem Problem der Mechanik des Zusammenstoßes zweier makroskopischer Körper. Falls die Dynamik der Körper als Ganzes dies erlaubt, ohne in unüberschaubare Komplexität zu verfallen (in der Regel ist das nur für das reine Normalstoßproblem der Fall), werden allgemeine axialsymmetrische Stoßpartner betrachtet. Für das allgemeine räumliche Stoßproblem wird sich auf den Kontakt von Kugeln beschränkt. Zunächst werden im Buch sehr ausführlich die kontaktmechanischen Grundlagen (Elastizität, Plastizität, Viskoelastizität, Adhäsion, Gradientenmedien) dargestellt und anschließend auf das Stoßproblem übertragen. Mit der Methode der Dimensionsreduktion, der ein eigenes Kapitel gewidmet ist, steht außerdem seit wenigen Jahren ein Werkzeug zu Verfügung, das die sehr effiziente analytische und numerische Behandlung von dynamischen Kontaktproblemen (wie z.B. Stößen) ermöglicht. Den Abschluss des Buch bilden Anwendungsfälle aus verschiedenen Gebieten.
    Keywords: Engineering ; Mechanics ; Mechanics, Applied ; Mechanics ; Applied mathematics ; Engineering mathematics ; bic Book Industry Communication::P Mathematics & science::PH Physics::PHD Classical mechanics ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBJ Maths for engineers ; bic Book Industry Communication::T Technology, engineering, agriculture::TG Mechanical engineering & materials::TGM Materials science::TGMD Mechanics of solids ; thema EDItEUR::P Mathematics and Science::PH Physics::PHD Classical mechanics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBJ Maths for engineers ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science::TGMD Engineering: Mechanics of solids
    Language: German
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  • 46
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    Springer Nature
    Publication Date: 2024-04-11
    Description: Engineering; Industrial engineering; Production engineering
    Keywords: Engineering ; Industrial engineering ; Production engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering
    Language: English
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  • 47
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    Springer Nature
    Publication Date: 2024-04-11
    Description: This open access book contains the research report of the Collaborative Research Center “Micro Cold Forming” (SFB 747) of the University of Bremen, Germany. The topical research focus lies on new methods and processes for a mastered mass production of micro parts which are smaller than 1mm (by forming in batch size higher than one million). The target audience primarily comprises research experts and practitioners in production engineering, but the book may also be of interest to graduate students alike.
    Keywords: Engineering ; Manufactures ; Quality control ; Reliability ; Industrial safety ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering::TGPR Reliability engineering
    Language: English
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  • 48
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    Springer Nature
    Publication Date: 2021-02-10
    Description: This open access book presents work collected through the Liquefaction Experiments and Analysis Projects (LEAP) in 2017. It addresses the repeatability, variability, and sensitivity of lateral spreading observed in twenty-four centrifuge model tests on mildly sloping liquefiable sand. The centrifuge tests were conducted at nine different centrifuge facilities around the world. For the first time, a sufficient number of experiments were conducted to enable assessment of variability of centrifuge test results. The experimental data provided a unique basis for assessing the capabilities of twelve different simulation platforms for numerical simulation of soil liquefaction. The results of the experiments and the numerical simulations are presented and discussed in papers submitted by the project participants. The work presented in this book was followed by LEAP-Asia that included assessment of a generalized scaling law and culminated in a workshop in Osaka, Japan in March 2019. LEAP-2020, ongoing at the time of printing, is addressing the validation of soil-structure interaction analyses of retaining walls involving a liquefiable soil. A workshop is planned at RPI, USA in 2020.
    Keywords: Engineering ; Engineering geology ; Engineering—Geology ; Foundations ; Hydraulics ; Quality control ; Reliability ; Industrial safety ; Geotechnical engineering ; Soil science ; Soil conservation ; Natural disasters ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences::RBG Geology & the lithosphere::RBGB Soil science, sedimentology ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences::RBP Meteorology & climatology ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNR Natural disasters ; bic Book Industry Communication::T Technology, engineering, agriculture::TG Mechanical engineering & materials::TGP Production engineering::TGPR Reliability engineering
    Language: English
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  • 49
    Publication Date: 2024-03-29
    Description: Understanding the many complexities that define gender inequality has been described by researchers as a grand challenge. Novel insights, innovation, a broader community to conduct research and to ascertain effective interventions are essential in the challenge to create organizations that are gender equal. As such, this Research Topic in Frontiers in Psychology addresses the under-representation of women in engineering and computing as a complex, but solvable problem. This Research Topic seeks to inform the global community about advances in understanding the under-representation of women in engineering and computing with a focus on what enables change. Further, this Topic will promote fresh perspectives, innovative methodologies, and mixed method approaches important to accelerating the pace of change.
    Keywords: BF1-990 ; Q1-390 ; Women ; Engineering ; Tech ; Gender Equity ; Under-Represention of Women ; Computing ; STEM ; bic Book Industry Communication::J Society & social sciences::JM Psychology ; thema EDItEUR::J Society and Social Sciences::JM Psychology
    Language: English
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  • 50
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    Purdue University Press
    Publication Date: 2024-03-29
    Description: Higher education is coming under increasing scrutiny, both publically and within academia, with respect to its ability to appropriately prepare students for the careers that will make them competitive in the 21st-century workplace. At the same time, there is a growing awareness that many global issues will require creative and critical thinking deeply rooted in the technical STEM (science, technology, engineering, and mathematics) disciplines. Transforming Institutions brings together chapters from the scholars and leaders who were part of the 2011 and 2014 conferences. It provides an overview of the context and challenges in STEM higher education, contributed chapters describing programs and research in this area, and a reflection and summary of the lessons from the many authors’ viewpoints, leading to suggested next steps in the path toward transformation.
    Keywords: Engineering ; Undergraduate ; Education ; Science ; Technology ; bic Book Industry Communication::J Society & social sciences::JN Education::JNF Educational strategies & policy ; thema EDItEUR::J Society and Social Sciences::JN Education::JNF Educational strategies and policy
    Language: English
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  • 51
    Publication Date: 2023-12-20
    Description: This volume features thirteen original chapters on the causes and consequences of gender segregation in scientific, technical, engineering, and mathematics (“STEM”) occupations and fields of study. Although women have made great strides in equalizing access to labor markets and higher education, many STEM fields—particularly in the physical sciences and engineering—remain strongholds of gender segregation in the United States and other reputably gender-progressive societies. Policymakers, business leaders and activists have launched countless initiatives to diversify access to lucrative, high status occupations and ameliorate labor shortages that diminish innovation and competitiveness. Contributors to this volume apply diverse theoretical lenses and methodological approaches to understand the individual, interactional, organizational, and cultural dynamics that drive this segregation in the United States. Results show that the gender composition of scientific and technical fields varies a great deal over time and across organizational contexts and socio-demographic groups defined by race, ethnicity, class, and sexuality. But despite this variability, STEM work and STEM workers are widely presumed to be naturally and inevitably masculine. Research presented here reveals how these stereotypes combine with cultural beliefs about natural and fundamental differences between men and women to produce gendered aspirations and reinforce inequalities in the US scientific and technical workforce.
    Keywords: HM401-1281 ; NX1-820 ; H1-99 ; Women ; Engineering ; Segregation ; Race/ethnicity ; Men ; Sexuality ; Science ; Mathematics ; Gender ; STEM ; Inequality ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFF Social issues & processes::JFFP Social interaction
    Language: English
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  • 52
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    Springer Nature | Palgrave Macmillan
    Publication Date: 2024-03-24
    Description: Uncanny computer-generated animations of splashing waves, billowing smoke clouds, and characters’ flowing hair have become a ubiquitous presence on screens of all types since the 1980s. This Open Access book charts the history of these digital moving images and the software tools that make them. Unpredictable Visual Effects uncovers an institutional and industrial history that saw media industries conducting more private R&D as Cold War federal funding began to wane in the late 1980s. In this context studios and media software companies took concepts used for studying and managing unpredictable systems like markets, weather, and fluids and turned them into tools for animation. Unpredictable Visual Effects theorizes how these animations are part of a paradigm of control evident across society, while at the same time exploring what they can teach us about the relationship between making and knowing.
    Keywords: Animation ; Film/TV Industry ; Film Theory ; Film and Television Industry ; Visual Effects ; Live-Action Cinema ; Economics ; Mechanical Control ; Socio-Political ; Engineering ; Open Access ; Animated films ; Performing arts ; Film history, theory & criticism ; thema EDItEUR::A The Arts::AT Performing arts::ATF Films, cinema::ATFV Animated films and animation ; thema EDItEUR::A The Arts::AT Performing arts::ATF Films, cinema ; thema EDItEUR::A The Arts::AT Performing arts::ATJ Television ; thema EDItEUR::A The Arts::AT Performing arts::ATF Films, cinema::ATFA Film history, theory or criticism
    Language: English
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  • 53
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    Springer Nature | Springer
    Publication Date: 2024-04-11
    Description: This open access book presents the proceedings of the 3rd Indo-German Conference on Sustainability in Engineering held at Birla Institute of Technology and Science, Pilani, India, on September 16–17, 2019. Intended to foster the synergies between research and education, the conference is one of the joint activities of the BITS Pilani and TU Braunschweig conducted under the auspices of Indo-German Center for Sustainable Manufacturing, established in 2009. The book is divided into three sections: engineering, education and entrepreneurship, covering a range of topics, such as renewable energy forecasting, design & simulation, Industry 4.0, and soft & intelligent sensors for energy efficiency. It also includes case studies on lean and green manufacturing, and life cycle analysis of ceramic products, as well as papers on teaching/learning methods based on the use of learning factories to improve students’problem-solving and personal skills. Moreover, the book discusses high-tech ideas to help the large number of unemployed engineering graduates looking for jobs become tech entrepreneurs. Given its broad scope, it will appeal to academics and industry professionals alike.
    Keywords: Industrial and Production Engineering ; Renewable and Green Energy ; Engineering/Technology Education ; Study and Learning Skills ; Energy Efficiency ; Energy Policy, Economics and Management ; Engineering and Technology Education ; Engineering ; Entrepreneurship ; Education ; Sustainability ; Learning factories ; International collaboration ; Open Access ; Production engineering ; Alternative & renewable energy sources & technology ; Higher & further education, tertiary education ; Technology: general issues ; Study & learning skills: general ; Energy technology & engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THV Alternative and renewable energy sources and technology ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education ; thema EDItEUR::J Society and Social Sciences::JN Education::JNZ Study and learning skills: general ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering
    Language: English
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  • 54
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    Springer Nature
    Publication Date: 2024-04-11
    Description: This open access book summarizes the results of the European research project “Twin-model based virtual manufacturing for machine tool-process simulation and control” (Twin-Control). The first part reviews the applications of ICTs in machine tools and manufacturing, from a scientific and industrial point of view, and introduces the Twin-Control approach, while Part 2 discusses the development of a digital twin of machine tools. The third part addresses the monitoring and data management infrastructure of machines and manufacturing processes and numerous applications of energy monitoring. Part 4 then highlights various features developed in the project by combining the developments covered in Parts 3 and 4 to control the manufacturing processes applying the so-called CPSs. Lastly, Part 5 presents a complete validation of Twin-Control features in two key industrial sectors: aerospace and automotive. The book offers a representative overview of the latest trends in the manufacturing industry, with a focus on machine tools.
    Keywords: Engineering ; Manufactures ; Vibration ; Dynamical systems ; Dynamics ; Control engineering ; Machinery ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGB Mechanical engineering::TGBN Engines and power transmission ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFM Automatic control engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGB Mechanical engineering::TGBN Engines and power transmission ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFM Automatic control engineering
    Language: English
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  • 55
    Publication Date: 2021-02-10
    Description: This open access book focuses on the development of methods, interoperable and integrated ICT tools, and survey techniques for optimal management of the building process. The construction sector is facing an increasing demand for major innovations in terms of digital dematerialization and technologies such as the Internet of Things, big data, advanced manufacturing, robotics, 3D printing, blockchain technologies and artificial intelligence. The demand for simplification and transparency in information management and for the rationalization and optimization of very fragmented and splintered processes is a key driver for digitization. The book describes the contribution of the ABC Department of the Polytechnic University of Milan (Politecnico di Milano) to R&D activities regarding methods and ICT tools for the interoperable management of the different phases of the building process, including design, construction, and management. Informative case studies complement the theoretical discussion. The book will be of interest to all stakeholders in the building process – owners, designers, constructors, and faculty managers – as well as the research sector.
    Keywords: Engineering ; Buildings—Design and construction ; Building ; Construction ; Engineering, Architectural ; Computer-aided engineering ; Building—Superintendence ; Construction industry—Management ; Construction superintendence ; Remote sensing ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography::RGW Geographical information systems (GIS) & remote sensing ; bic Book Industry Communication::T Technology, engineering, agriculture::TN Civil engineering, surveying & building::TNK Building construction & materials ; bic Book Industry Communication::T Technology, engineering, agriculture::TN Civil engineering, surveying & building::TNT Building skills & trades ; bic Book Industry Communication::U Computing & information technology::UG Graphical & digital media applications::UGC Computer-aided design (CAD)
    Language: English
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  • 56
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    Springer Nature
    Publication Date: 2024-04-11
    Description: In diesem Open-Access-Tagungsband sind die besten Beiträge des 9. Jahreskolloquiums "Kommunikation in der Automation" (KommA 2018) und des 6. Jahreskolloquiums "Bildverarbeitung in der Automation" (BVAu 2018) enthalten. Die Kolloquien fanden am 20. und 21. November 2018 in der SmartFactoryOWL, einer gemeinsamen Einrichtung des Fraunhofer IOSB-INA und der Technischen Hochschule Ostwestfalen-Lippe statt. Die vorgestellten neuesten Forschungsergebnisse auf den Gebieten der industriellen Kommunikationstechnik und Bildverarbeitung erweitern den aktuellen Stand der Forschung und Technik. Die in den Beiträgen enthaltenen anschaulichen Beispiele aus dem Bereich der Automation setzen die Ergebnisse in den direkten Anwendungsbezug.
    Keywords: Engineering ; Electrical engineering ; Signal processing ; Image processing ; Speech processing systems ; Robotics ; Automation ; Quality control ; Reliability ; Industrial safety ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering::TGPR Reliability engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFM Automatic control engineering::TJFM1 Robotics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTB Applied optics::TTBM Imaging systems and technology
    Language: English , German
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  • 57
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    Springer Nature
    Publication Date: 2021-02-10
    Description: This open access book addresses several questions regarding the implementation of human and organisational factors (HOF) so that recent improvements in industrial safety can be built upon. It addresses sources of frustration in senior management with high expectations of operational recommendations and disquiet on the part of HOF specialists struggling to have an impact on high-level decision making. The brief explores these issues with an emphasis on examples and lessons learned based on the experience of its authors, who come from different academic disciplines and various industrial sectors such as oil and gas, energy and transportation. It then offers some ways forward for a better consideration of HOF in hazardous companies with a view of promoting safety and facing challenges in a rapidly changing world.
    Keywords: Engineering ; Engineering economics ; Engineering economy ; Industrial psychology ; Economic sociology ; Welfare economics ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology::JHBL Sociology: work & labour ; bic Book Industry Communication::J Society & social sciences::JM Psychology::JMJ Occupational & industrial psychology ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCA Economic theory & philosophy ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBC Engineering: general
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    Springer Nature
    Publication Date: 2024-03-26
    Description: Dieses Buch ist eine Open-Access-Publikation unter einer CC BY 4.0 Lizenz. Künstliche Intelligenz (KI) klingt in aktuellen Debatten oft abstrakt und alltagsfremd. Doch die meisten Internetnutzerinnern und -nutzer sind bereits täglich mit ihr konfrontiert – wenn auch unbewusst: sei es bei der Sprachsteuerung des Smartphones, bei Kaufempfehlungen im Online-Shop oder bei der Abfrage von auf Webseiten häufig gestellten Fragen (Frequently Asked Questions, FAQ). KI ist ein Teilaspekt der Digitalisierung, der als Schlagwort immer häufiger in den Medien auftaucht. Das aktuell große Interesse liegt darin begründet, dass es in den vergangenen Jahren verschiedene technologische Fortschritte gab, welche die Nutzung der KI nun auf andere Ebenen heben. Mit diesem Themenband des Instituts für Innovation und Technik (iit) „Künstliche Intelligenz“ erhalten Leserinnen und Leser einen schlaglichtartigen Einblick in die KI hinsichtlich ihrer Technologien, aktuellen und potenziellen Anwendungen sowie Auswirkungen auf die Gesellschaft.
    Keywords: Engineering ; Electrical engineering ; Humanities—Digital libraries ; Educational technology ; thema EDItEUR::D Biography, Literature and Literary studies::D Biography, Literature and Literary studies::DS Literature: history and criticism ; thema EDItEUR::J Society and Social Sciences::JN Education::JNV Educational equipment and technology, computer-aided learning (CAL) ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications
    Language: German
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  • 59
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    Springer Nature
    Publication Date: 2024-04-11
    Description: It is common for us today to associate the practice of science primarily with the act of seeing—with staring at computer screens, analyzing graphs, and presenting images. We may notice that physicians use stethoscopes to listen for disease, that biologists tune into sound recordings to understand birds, or that engineers have created Geiger tellers warning us for radiation through sound. But in the sciences overall, we think, seeing is believing. This open access book explains why, indeed, listening for knowledge plays an ambiguous, if fascinating, role in the sciences. For what purposes have scientists, engineers and physicians listened to the objects of their interest? How did they listen exactly? And why has listening often been contested as a legitimate form of access to scientific knowledge? This concise monograph combines historical and ethnographic evidence about the practices of listening on shop floors, in laboratories, field stations, hospitals, and conference halls, between the 1920s and today. It shows how scientists have used sonic skills—skills required for making, recording, storing, retrieving, and listening to sound—in ensembles: sets of instruments and techniques for particular situations of knowledge making. Yet rather than pleading for the emancipation of hearing at the expense of seeing, this essay investigates when, how, and under which conditions the ear has contributed to science dynamics, either in tandem with or without the eye.
    Keywords: Engineering ; Acoustical engineering ; Technology—History ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTA Acoustic and sound engineering
    Language: English
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  • 60
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    De Gruyter
    Publication Date: 2024-04-11
    Description: This book covers new advances in the field of impedance spectroscopy including fundamentals, methods and applications. It releases selected extended and peer reviewed scientific contributions from the International Workshop on Impedance Spectroscopy (IWIS 2017) focussing on detailed information about recent scientific research results in electrochemistry and battery research, bioimpedance measurement, sensors, system design, signal processing.
    Keywords: Engineering ; International Workshop on Impedance Spectroscopy ; Electrochemistry and Battery Research ; Bioimpedance Measurement ; Sensors ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBM Instruments and instrumentation::TBMM Engineering measurement and calibration
    Language: English
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  • 61
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    Springer Nature
    Publication Date: 2024-03-25
    Description: The conventional approach to risk communication, based on a centralized and controlled model, has led to blatant failures in the management of recent safety related events. In parallel, several cases have proved that actors not thought of as risk governance or safety management contributors may play a positive role regarding safety. Building on these two observations and bridging the gap between risk communication and safety practices leads to a new, more societal perspective on risk communication, that allows for smart risk governance and safety management. This book is Open Access under a CC-BY licence.
    Keywords: Engineering ; Quality control ; Reliability ; Industrial safety ; Operations research ; Management science ; Communication ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GT Interdisciplinary studies::GTC Communication studies ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJT Operational research ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering::TGPR Reliability engineering
    Language: English
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  • 62
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    Springer Nature
    Publication Date: 2024-04-07
    Description: This open access book provides a concise explanation of the fundamentals and background of the surround sound recording and playback technology Ambisonics. It equips readers with the psychoacoustical, signal processing, acoustical, and mathematical knowledge needed to understand the inner workings of modern processing utilities, special equipment for recording, manipulation, and reproduction in the higher-order Ambisonic format. The book comes with various practical examples based on free software tools and open scientific data for reproducible research. The book’s introductory section offers a perspective on Ambisonics spanning from the origins of coincident recordings in the 1930s to the Ambisonic concepts of the 1970s, as well as classical ways of applying Ambisonics in first-order coincident sound scene recording and reproduction that have been practiced since the 1980s. As, from time to time, the underlying mathematics become quite involved, but should be comprehensive without sacrificing readability, the book includes an extensive mathematical appendix. The book offers readers a deeper understanding of Ambisonic technologies, and will especially benefit scientists, audio-system and audio-recording engineers. In the advanced sections of the book, fundamentals and modern techniques as higher-order Ambisonic decoding, 3D audio effects, and higher-order recording are explained. Those techniques are shown to be suitable to supply audience areas ranging from studio-sized to hundreds of listeners, or headphone-based playback, regardless whether it is live, interactive, or studio-produced 3D audio material.
    Keywords: Engineering ; Signal processing ; Image processing ; Speech processing systems ; Acoustical engineering ; Acoustics ; Music ; thema EDItEUR::A The Arts::AV Music ; thema EDItEUR::P Mathematics and Science::PH Physics::PHD Classical mechanics::PHDS Wave mechanics (vibration and acoustics) ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTA Acoustic and sound engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTB Applied optics::TTBM Imaging systems and technology
    Language: English
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  • 63
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    Journal of Morphology 199 (1989), S. 165-174 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: During ontogeny, the apical and basal components of dicamptodontid teeth exhibit three major developmental stages: nonpedicellate, subpedicellate, and pedicellate. Premetamorphic larvae tend to have nonpedicellate teeth, incompletely or recently metamorphosed individuals tend to have subpedicellate teeth, and fully transformed adults usually have pedicellate teeth. In concert with this transition, cusp morphology is modified from a larval monocuspid, to an incipiently bicuspid, to definitive adult bicuspid, and finally to an adult monocuspid condition. Thus, the larval and adult monocuspid conditions are ontogenetically distinct. The morphology of the larval monocuspid, adult bicuspid, and adult monocuspid conditions differs between Dicamptodon and Rhyacotriton. However, the incipient bicuspid condition in these two genera is very similar in appearance, suggesting that Dicamptodon and Rhyacotriton may be more closely related to each other than to the family Ambystomatidae in which they both sometimes are placed. The method of establishing ontogenetic trajectories seems to be preferable to comparisons based on adult structure, since similarities in the morphology of adults often is owing to convergent or parallel evolution.
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  • 64
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    Journal of Morphology 199 (1989), S. 207-221 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Comparative morphological analysis of the female reproductive tract in macroglossine bats was undertaken to test the hypothesis that nectarivory arose at least twice within Old World fruit bats. Given that features of the female reproductive tract are not directly involved in adaptations for feeding, this data set should provide a test of the monophyly of macroglossine bats. A cladistic analysis of variation in the structure of the ovaries, oviducts, uterus, and external genitalia supports the hypothesis that Megaloglossus has developed a nectar-feeding habit independent of other macroglossine genera. Most of the variation in female reproductive organs among pteropodids is found in the development of derived external and internal features of the uterus. Fusion of uterine cornua, expansion of the common uterine body, and elaboration of the cervical region are found in a group which includes species of Pteropus, Dobsonia, Nyctimene, and the macroglossines (excluding Megaloglossus). Results of this study are concordant with independent data sets, thus providing a phylogenetic framework to evaluate critically structural and functional design in the evolution of pteropodid feeding mechanisms.
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  • 65
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    Journal of Morphology 200 (1989), S. 269-300 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Descriptive data are provided for ontogeny of bone to metamorphosis in the myobatrachine species Uperoleia trachyderma; in pre- and postmetamorphic specimens of U. lithomoda, Crinia signifera, and Pseudophryne bibroni; and in postmetamorphic specimens of U. laevigata. Data derived from postmetamorphic U. laevigata indicate that dermal and endochondral elements ossify independently of each other in Uperoleia. Crinia signifera does not show the same degree of independence of ossification of dermal and endochondral elements as Uperoleia, whereas dermal and endochondral elements are not independent in P. bibroni. Ten (or possibly eleven) features are identified as being influenced by heterochrony within Uperoleia, confirming that the genus represents a highly pedomorphic lineage, four elements are influenced by heterochrony in Crinia, but only two in Pseudophryne.
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  • 66
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    Journal of Morphology 200 (1989), S. 301-319 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Investigation of eight developmental stages by means of serial sections and subsequent graphic or wax model reconstructions, as well as by means of cleared-and-stained and dissected material, revealed that the ethmoidal endocranium in Pipa pipa consists in early states of a single horizontal ethmoid plate lacking labial cartilages. Later in the course of development, structures comparable with those in other anurans appear, though modified and of reduced size. These adult structures arise from the new cartilaginous tissue located above the former larval ethmoid plate, whereas the latter entirely disappear. This phenomenon can be observed also in P. carvalhoi and in Xenopus laevis; hence, it supposedly occurs in all pipids. On the other hand, in anuran larvae, which develop cornua trabecularum in the ethmoidal region, these persist in adults as part of the nasal septum. Positional and developmental differences suggest that, although the ethmoid plate and the cornua trabecularum arise from the same region of the cranial neural crest, they are not fully corresponding structures. Comparison with adults of other pipid genera confirmed the conclusion of some earlier investigators that P. pipa is the most specialized among pipids.
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  • 67
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The Harderian gland of the musk shrew Suncus murinus is elongated anteroposteriorly from in front of the eye to behind the ear. The gland is divided into two portions: an anterior portion (A portion) and a posterior portion (P portion). The single secretory duct of the gland emerges from the anterior end of the P portion, receives several secretory ducts of the A portion during the course along it, runs around the ventral aspect of the eyeball, and finally opens into the anterior corner of conjunctival sacs. The two portions of the gland show a fundamentally similar histological structure, having a poorly developed intraglandular duct system and wide tubular alveoli. The quantity of lipid vacuoles and stromal connective tissue in the A portion is greater than in the P portion. The lipid vacuoles in both portions are surrounded by unit membranes, but their contents appear different.The lacrimal gland of the musk shrew is located along the ventral side of the P portion of the Harderian gland. The lacrimal duct emerges from its anterior end, runs around the ventral and anterior aspects of the ear, crosses the A portion of the Harderian gapos; and, and finally opens at the posterior corner of conjunctival sacs. The lobules of the lacrimal gland comprise a branched duct system and terminal acini with two types of secretory cells: (1) acidic cells positive both for the periodic acid-Schiff reaction (PAS) and for Alcian blue (AB) and (2) neutral cells positive for PAS and negative for AB. Both cell types tend to make separate acini, but when present in the same acinus, the acidic cells occupy relatively peripheral positions in the acinus. Both cell types lack intercellular canaliculi.On the basis of the present study as well as previous descriptions in the literature, the author suggests that the mammalian lacrimal glands can be divided into two sets: (1) a Glandula lacrimalis superior with multiple secretory ducts associated with the upper eyelid and (2) a Glandula lacrimalis inferior with a single secretory duct opening into the lateral corner of the conjunctival sacs. These glands have a fundamentally similar histological structure; but in the rabbit, which possesses both sets of lacrimal glands, they are different. On the other hand, the secretory cells of lacrimal glands generally have no intercellular secretory canaliculi, which are characteristically present between the serous secretory cells of the salivary glands.
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  • 68
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The leg musculature from 11, 14, and 17 day chick embryos was analyzed histochemically to investigate the temporal and spatial distribution of various types of sulfated glycosaminoglycans present during skeletal muscle development. Types of glycans were identified by selective degradation with specific glycosidases and nitrous acid coupled with Alcian blue staining procedures for sulfated polyanions and with [35S]sulfate autoradiography. On day 11, radiolabeled chondroitin sulfate glycosaminoglycans are localized extracellularly in both the myogenic and connective tissue cell populations. By day 17, incorporation of [35S]sulfate into chondroitin sulfate is substantially reduced, although Alcian blue-stained chondroitin sulfate molecules are still detectable. With increasing age and developmental state of the tissues, radiolabeled and stained dermatan sulfate and heparan sulfate progressively increase in relative quantity compared to chondroitin sulfate both in muscle and in associated connective tissue elements. These changes in glycosaminoglycans correlate well with similar changes previously determined biochemically and further document the alterations in extracellular matrix components during embryonic skeletal myogenesis.
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  • 69
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    Journal of Morphology 201 (1989), S. 119-129 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The aquiferous system of representatives of the orders Dictyocer-atida, Dendroceratida, and Verongida has been studied to note its relevance to the systematics of the groups. The volume of the choanocyte chamber, the size and shape of the choanocytes, the number of choanocytes per chamber, the relative development of the mesohyl, and the features of endopinacocytes are estimated from scanning and transmission electron microscopic observations of representatives of most families of the three orders. Although the Dysideidae have a reticulate skeleton and were classified in the order Dictyoceratida, they are actually closer to the Aplysillidae (Dendroceratida) than to dictyoceratids. The anatomy and cytology of the Halisarcidae differ profoundly from those of these three orders and are clearly more closely related to nonkeratose sponges. Some changes in classification lead to a pattern with highly homogeneous orders that clearly differ in their anatomic and cytologic features, which does not support the hypothesis of a common origin of the “keratose” sponges.
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  • 70
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    Journal of Morphology 201 (1989), S. 161-178 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The wall of the asymmetrical saclike lungs of the fishes Polypterus and Erpetoichthys consists of several functionally different tissue layers. Their lumen is lined by a surface epithelium composed of (1) highly attenuated cells, termed pneumocytes I; (2) pneumocytes II with lamellar bodies, presumably indicating surfactant production; (3) mucous cells; and (4) ciliated cells. Underlying the pneumocytes I is a dense capillary net. The thin continuous endothelium of this net, together with the pneumocytes I, constitute the very thin blood-air barrier. The basement membrane of epithelium and endothelium fuse in the area of the blood-air barrier (thickness 210 m̈m). Secretory and ciliary cells form longitudinal rows in the epithelium. Below the zone with a gas-exchanging tissue, a layer of connective tissue containing collagen and special elastic fibers occurs. The blood vessels that give rise to or drain the superficial capillary plexus are located in this connective tissue. The outermost layer of the lung consists of muscle cells, a narrow inner zone with smooth muscle cells, and an outer, broader zone with cross-striated muscle cells. The lung is innervated by myelinated and nonmyelinated nerve fibers. The morphology of the gas-exchange tissue in the lungs of these primitive bony fish is fundamentally very similar to that of the lungs of tetrapod vertebrates. The morphologic observations are in close agreement with physiologic data, disclosing well-developed respiratory capacities. Structural simplicity can be regarded as a model from which the lungs of the higher vertebrates derived. In addition to respiratory function, the lungs seem also to have hydrostatic tasks.
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  • 71
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    Journal of Morphology 201 (1989), S. 179-186 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Effect of turning of the egg during incubation on development of the area vasculosa of the chick embryo was investigated. The size of the area vasculosa was determined by two methods: direct measurement with calipers and measurement of a template cut from the eggshell by use of an automatic surface area recorder. The effects of turning and additionally the effects of lowered temperature (36°C) on both growth of the area vasculosa by day 7 and embryo growth by day 14 of incubation were investigated. The effects of turning during a critical period for turning, from 3 to 7 days of incubation, were also recorded. Generally, failure to turn eggs retarded growth of the area vasculosa. Turning during the critical period stimulated the extent of growth of the area vasculosa by day 7 of incubation and of subsequent embryonic growth by day 14. Incubation at low temperature resulted both in reduced expansion of the area vasculosa and retarded embryonic growth in a pattern similar to that observed for unturned eggs. It is suggested that turning stimulates development of blood vessels in the area vasculosa via localized increases in blood pressure. The effect of a reduced area vasculosa is considered to retard embryonic development through restricted nutrient uptake from the yolk. The prevailing hypothesis that turning prevents deleterious membrane adhesions is questioned in light of these observations. It is suggested that the physiological basis for the need for turning lies in maximizing the growth rate of the area vasculosa to maximize yolk use and embryonic growth rate.
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  • 72
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    Journal of Morphology 200 (1989), S. 123-130 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Recessive mutant gene c in axolotls results in a failure of the heart to function because of abnormal embryonic induction processes. The myocardium in this mutant lacks organized sarcomeric myofibrils. The present study was undertaken to determine if developmental abnormalities were evident in other areas of the heart besides the myocardium. A detailed comparative survey of the structure of developing normal and mutant hearts, including the endocardium, its cellular derivatives, and the extracellular matrix, known as cardiac jelly, showed that in the mutant there are fewer than the normal number of endocardial cells lining the heart lumen, the number of mesenchyme cells is reduced, and the cardiac jelly area is greatly enlarged in the posterior part of the truncus adjacent to the ventricle.
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  • 73
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    Journal of Morphology 200 (1989), S. 163-174 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Plethodontid salamanders have unique nasolabial grooves that may function as “capillary tubes” to convey chemicals to the vomeronasal organ when these animals nose-tap. 3H-proline was placed at the base of these grooves in Plethodon cinereus, and autoradiography revealed large concentrations of radioactive material in the vomeronasal organs. There was no significant accumulation of radioactive material in the main olfactory epithelium. Salamanders with blocked nasolabial grooves lacked significant accumulation of material in their nasolabial grooves or vomeronasal epithelia, although some salamanders had radioactive material in the posterior portion of their vomeronasal organ that had entered through the internal nares. Anteriorly placed vomeronasal organs situated adjacent to the posterior limits of the nasolabial grooves may insure that nose-tapping primarily stimulates the vomeronasal sensory epithelium.
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  • 74
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    Journal of Morphology 200 (1989) 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
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  • 75
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    Journal of Morphology 200 (1989), S. 231-245 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A new mechanical model for function of the pharyngeal jaw apparatus in generalized perciform fishes is developed from work with the family Haemulidae. The model is based on anatomical observations, patterns of muscle activity during feeding (electromyography), and the actions of directly stimulated muscles. The primary working stroke of the pharyngeal apparatus involves simultaneous upper jaw depression and retraction against a stabilized and elevating lower jaw. The working stroke is characterized by overlapping activity in most branchial muscles and is resolved into three phases. Four muscles (obliquus dorsalis 3, levator posterior, levator externus 3/4, and obliquus posterior) that act to depress the upper jaws become active in the first phase. Next, the retractor dorsalis, the only upper jaw retracting muscle, becomes active. Finally, there is activity in several muscles (transversus ventrales, pharyngocleithralis externus, pharyngohyoideus, and protractor pectoralis) that attach to the lower jaws. The combined effect of these muscles is to elevate and stabilize the lower jaws against the depressing and retracting upper jaws.The model identifies a novel mechanism of upper jaw depression, here proposed to be the primary component of the perciform pharyngeal jaw bite. The key to this mechanism is the joint between the epibranchial and toothed pharyngobranchial of arches 3 and 4. Dorsal rotation of epibranchials 3 and 4 about the insertion of the obliquus posterior depresses the lateral border of pharyngobranchials 3 and 4 (upper jaw). The obliquus dorsalis 3 muscle crosses the epibranchial-pharyngo-branchial joint in arches 3 and 4, and several additional muscles effect epibranchial rotation. Five upper jaw muscles cause upper jaw depression upon electrical stimulation: the obliquus dorsalis 3, levator posterior, levator externus 3/4, obliquus posterior, and transversus dorsalis. This result directly contradicts previous interpretations of function for the first three muscles. The presence of strong depression of the upper pharyngeal jaws explains the ability of many generalized perciform fishes to crush hard prey in their pharyngeal apparatus.
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  • 76
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    Journal of Morphology 200 (1989), S. 255-267 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Changes in body morphology during growth and reproduction in the hydromedusa Eleutheria dichotoma are described in terms of variations in eight different characters: umbrella diameter, total surface area, tentacle area, umbrella area, tentacle knob diameter, number of embryos, and diameter and area of buds. Sexually (sex) and vegetatively (veg) reproducing medusae differ significantly in their body morphometrics. Statistically significant allometric relations exist between umbrella diameter and (1) central area (sex and veg); (2) tentacle area (veg); (3) total area (veg); (4) tentacle knob diameter (veg); (5) bud diameter; and (6) number of embryos. A significant correlation between umbrella diameter and area is also found in undetached buds. During sexual reproduction, umbrella area shows positive allometry and loses its correlations to total area, tentacle area, and tentacle knob diameter. Linear and nonlinear bivariate allometric coefficients allow estimation of total body size from only one or two easily measurable attributes, e.g., umbrella and tentacle knob diameter. Curve fitting by the classic allometric equation (y = bxc) is only negligibly worse than that obtained with a “full” equation (y = a + c), and statistical confidence is better.Chemical analyses for carbon and nitrogen content allow estimation of biomass from the projection area of the body surface. The relation factors are 1.06 μgC mm-2 (sex) and 1.14 μgC mm-2 (veg) for carbon and 0.293 μgN mm-2 (sex) and 0.287 μgN mm-2 (veg) for nitrogen. The C:N ratios are 3.6 and 4.0 for sexual and vegetative medusae, respectively. The use of allometric regression formulas to calculate surface areas and to relate these to carbon content provides quick estimations of body size in a microscopic animal.
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    Journal of Morphology 202 (1989), S. 13-28 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The neuronal organization of the accessory olfactory bulb (AOB), which receives sensory information from the vomeronasal organ, was described in a squamate reptile (Podarcis hispanica) by means of light microscopy. Using the Golgi-impregnation method, seven neuronal types could be distinguished:Periglomerular cells constitute a morphologically heterogeneous population of small neurons located between and around the glomeruli.The mitral cells are diffusely distributed in the AOB. Their cell bodies are usually located within the mitral cell layer, but some of them could be also observed in the plexiform layers. Mitral cells were classified into three subgroups on the basis of their sizes and dendritic tree morphologies. Thus, the “outer mitral cells” have the biggest cell bodies, and their distal secondary dendrites are mainly distributed rostrocaudally in the external plexiform layer. The “inner mitral cells” have large cell bodies, and their secondary dendrites are distributed dorsoventrally and are located deeper than those of the other two subgroups. The third type, the “small mitral cells,” is the smallest one among mitral cells in the AOB, and from their cell bodies, only two main dendritic trunks arise.The granule cells are composed of several categories based on their different cell body locations and dendritic tree morphologies. Thus, the “superficial granule cells” are located exclusively in the external plexiform layer and have small dendritic fields. The “middle granule cells” have fusiform cell bodies - situated in the internal plexiform layer - and present a wide dendritic projection area. Finally, the “deep granule cells” are distributed throughout the granule cell layer and include a great variety of dendritic tree morphologies.The distribution and morphological features of all neuronal types constituting the AOB of Podarcis were compared with those reported on other vertebrates. The results suggest that the lamination pattern and neuronal organization of the AOB in lizards are more similar to that of mammals than to that of the remaining vertebrates.
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  • 78
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    Journal of Morphology 202 (1989), S. 69-88 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Iridescent butterfly scales are structurally colored, relying upon the interaction of light with detailed architecture to produce their color. In some iridescent scales, the reflective elements are contained within the body of the scale and come in two basic forms, lattices that produce diffraction colors (analogous to those produced by opal), and stacks of laminae that produce thin-film interference colors (analogous to those produced by soap or oil films). Both structures are remarkably complex and precise, yet each is only part of the total edifice built by the cell that makes the scale.To understand better how a cell can produce lattices or thin-film laminae, I studied the development of iridescent scales from two lycaenid butterflies. The presence of diffraction and thin-film scales in the same family (and in some cases on the same individual) suggests that the two types must be developmentally related; yet these results yield no clear explanation as to how. The diffraction lattice appears to be shaped within the boundaries of the scale cell by means of a convoluted series of membranes in which the smooth endoplasmic reticulum plays an important part. The thin-film interference laminae appear to result from the condensation of a network of filaments and tubes secreted outside the boundaries of the cell. This paper outlines the developmental histories of both types of scale and discusses the developmental implications of the mechanisms by which they form.
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  • 79
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    Notes: Wing folding spicules, elytral binding patches, and elytral locking devices of adult male and female seed weevils, Smicronyx fulvus LeConte and S. sordidus LeConte, involved in stridulation are described. Sound is produced by both sexes of the two species when the plectrum, paired conical teeth located along the anterior margin of the dorsally elevated seventh sternite, is struck against an elongate file, the pars stridens, on the under surface of the apical portion of each elytron. A second plectrum, on the sixth tergite, is well-developed in males of both species and is used by males to produce sound before and during mating.Sex-specific and species-specific differences in the sound produced is attributed to structural variation in the pars stridens and the elytra. The pars stridens determines frequencies, while the elytra may further modify the sound. The frequency range for male S. fulvus is 1,000 cycles per second (cps) through 13,000 cps and for male S. sordidus is 2,500 cps through 13,000 cps. The frequency range for female S. fulvus is 2,000 cps through 11,500 cps and for female S. sordidus is 900 cps through 11,500 cps.
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  • 80
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    Journal of Morphology 202 (1989), S. 53-68 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A study of neuromast ontogeny and lateral line canal formation in Oreochromis aureus and Cichlasoma nigrofasciatum reveals the existence of two classes of neuromasts: those that arise just before hatching (presumptive canal neuromasts, dorsal superficial neuromasts, gap neuromasts, and caudal fin neuromasts) and pairs of neuromasts that arise on each lateral line scale lateral to each canal segment at the same time as canal formation. In the anterior trunk canal segment, each presumptive canal neuromast is accompanied by a dorsoventrally oriented superficial neuromast forming an orthogonal neuromast pair. It is suggested that each of these dorsoventrally oriented superficial neuromasts is homologous to the transverse superficial neuromast row described by Münz (Zoomorphology 93:73-86, '79) in other cichlids. It is further suggested that the longitudinal lines described by Münz (Zoomorphology 93:73-86, '79) are derived from the pair of superficial neuromasts that arise during canal formation. Distinct changes in neuromast topography are documented. Neuromast formation, scale formation, and lateral line canal formation are three distinct and sequential processes. The distribution of neuromasts is correlated with myomere configuration; there is always one presumptive canal neuromast on each myomere. A single scale forms beneath each presumptive canal neuromast. Canal segment formation is initiated with the enclosure of each presumptive canal neuromast by an epithelial bridge which later ossifies. The distinction of these three processes raises questions as to the causal relationships among them.
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  • 81
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    Journal of Morphology 199 (1989), S. 299-311 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Gonadal differentiation in premetamorphic Bombina orientalis is described and staged. The pattern of events during differentiation in Bombina differs in several respects from that previously described in other anurans. The Bombina gonad initially develops on the ventral surface of the vena cava, where there is no pre-existent somatic genital ridge prior to the arrival of the germ cells. The sexually undifferentiated gonad does not have a distinct cortex and medulla; instead, medullary cells ingress from the mesonephric blastema during sexual differentiation. Formation of a testis or an ovary appears to depend on the ability (or lack of ability) of the medulla to invade the germ cell-containing cortex. In the germ line, sexual differetiation can be recognized by a premeiotic increase in oogonial cell volume.
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  • 82
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    Notes: The lungs of the New Caldeonian gecko Rhacodactylus leachianus were examined by means of gross dissection and light and electron microscopy. This tropical species, which is the largest living gecko, possesses two simple, single-chambered lungs. Right and left lungs are of similar size and shape. The lung volume (27.2 ml · 100 g-1) is similar to that of the tokay (Gekko gecko) but differs in that the gas exchange tissue is approximately homogeneously distributed, and the parenchymal units (ediculae) are very large, ∼2 mm in diameter. The parenchymal depth varies according to the location in the lung, being deepest near the middle of the lung and shallowest caudally. Scanning and transmission electron microscopy reveal an unusual distribution of ciliated cells in patches on the edicular walls as well as on the trabeculae. Secretory cell are very numerous, particularly in the bronchial epithelium, where they greatly outnumber the ciliated cells. The secretory cells form a morphological continuum characterized by small secretory droplets apically and large vacuoles basally. This continuum includes cells resembling type II pneumocytes but which are devoid of lamellar bodies. Type I pneumocytes similar to those of other reptiles cover the respiratory capillaries, where they form a thin, air-blood barrier together with the capillary endothelial cells and the fused basement laminae. The innervation, musculature, and vascular distribution in R. leachianus are also characterized. Apparent simplification of the lungs in this taxon may be related to features of its sluggish habits, whereas peculiarities of cell tissue composition may reflect demands of its mesic habitat.
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  • 83
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    Journal of Morphology 199 (1989) 
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  • 84
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    Journal of Morphology 199 (1989) 
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  • 85
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    Journal of Morphology 199 (1989), S. 41-52 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The molting cycle of Artemia is described and subdivided in stages A-D3 according to the system of Drach. Determination of the stages is done in living animals by light microscopic observation of changes in the texture of the setal matrix of the exopodites. A parallel ultrastructural investigation of the integument was carried out to control the proposed staging scheme. The duration of each stage was calculated.
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  • 86
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    Journal of Morphology 199 (1989), S. 71-92 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The extracellular matrix surrounding the sea urchin embryo (outer ECM) contains fibers and granules of various sizes which are organized in recognizable patterns as shown by ultrastructural studies, particularly stereoimaging techniques. The use of the ruthenium red method for retaining and staining the ECM, with modification of the Luft (Anatomical Record 171:347-368, 1971) method for invertebrate embryos, allows for the clarification of certain structures, particularly fiber compaction in the interzonal region, and microvillus-associated bodies.The inner ECM in the sea urchin embryo includes the basal lamina and blastocoel matrix. Stereoimages show that the fibers which are loosely distributed in the blastocoel matrix become compacted around the periphery of the blastocoel to form the basal lamina.The ruthenium red method was also used on a number of marine invertebrate embryos and larvae, representing different phyla, to facilitate comparisons between their surface coats. The similarities observed in the specimens shown suggest that ECMs are widely found on marine invertebrate eggs, embryos, and larvae, and that they resemble vertebrate ECMs and may, therefore, have similar functions.
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  • 87
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    Journal of Morphology 199 (1989), S. 151-164 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The coronate larva of the ascophoran bryozoan Watersipora arcuata has a ring of 32 large, multiciliated coronal cells that are used for swimming. Fourteen pairs of small cells are intercalated between the lateral margins of adjacent coronal cells. These intercoronal cells are arranged in a precise pattern and are polymorphic: seven pairs have multiple cilia and seven pairs are mono- or oligociliated. Three pairs of multiciliated intercoronal cells have their cilia arranged as a whorl that is recessed in a pocket formed between the adjacent coronal cells, and they are thought to be photoreceptors that sense general light intensity. Two other pairs of multiciliated cells with cohesive tufts of cilia may be chemo- or mechanoreceptors. Roles of the other intercoronal cells in this species are not evident, but it is proposed that the majority, if not all, of them are sensory. The close proximity of all the intercoronal cells to the equatorial nerve ring is compatible with this interpretation. Analyses of the literature on cleavage patterns, pigment cup ocelli, and flagellar tufts that serve as balancers in coronate larvae lead us to propose that (1) an intercoronal cell is the sensory element of most, if not all, pigment cup ocelli of bryozoan larvae; and (2) intercoronal cells are not modified coronal cells but probably are specialized supra- and/or infracoronal ones that have migrated to an intercoronal position.
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  • 88
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    Journal of Morphology 199 (1989), S. 245-247 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
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  • 89
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    Journal of Morphology 199 (1989), S. 223-243 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The projectile tongue of caudate amphibians has been studied from many perspectives, yet a quantitative kinetic model of tongue function has not yet been presented for generalized (nonplethodontid) terrestrial salamanders. The purposes of this paper are to describe quantitatively the kinnematics of the feeding mechanism and to present a kinetic model for the function of the tongue in the ambystomatid salamander Ambystoma tigrinum. Six kinematic variables were quantified from high-speed films of adult A. tigrinum feeding on land and in the water. Tongue protrusion reaches its maximum during peak gape, while peak tongue height is reached earlier, 15 ms after the mouth starts to open. Tongue kinematics change considerably during feeding in the water, and the tongue is not protruded past the plane of the gape. Electrical stimulation of the major tongue muscles showed that tongue projection in A. tigrinum is the combined result of activity in four muscles: the geniohyoideus, Subarcualis rectus 1, intermandibularis posterior, and interhyoideus. Stimulation of the Subarcualis rectus 1 alone does not cause tongue projection. The kinetic model produced from the kinematic and stimulation data involves both a dorsal vector (the resultant of the Subarcualis rectus 1, intermandibularis posterior, and interhyoideus) and a ventral vector (the geniohyoideus muscle), which sum to produce a resultant anterior vector that directs tongue motion out of the mouth and toward the prey. This model generates numerous testable predictions about tongue function and provides a mechanistic basis for the hypothesis that tongue projection in salamanders evolved from primitive intraoral manipulative action of the hyobranchial apparatus.
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  • 90
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    Notes: We have attempted to develop an objective, semiquantitative classification of fiber types in turtle neck and limb muscle using microphotometry and multivariate statistical techniques. We first stained serial sections for myosin adenosine triphosphatase (ATPase) (with acid and alkaline preincubation and without preincubation), NADH-diaphorase, and two glycolysis-associated markers, α-glycerophosphate dehydrogenase (α-GPDH) and glycogen phosphorylase A (GPA). This allowed us to characterize individual muscle fibers in terms of their contraction speed and metabolic properties. Next we used microphotometry to measure the optical density of the reaction product in each fiber, and we subjected the resulting optical density matrix to cluster and discriminant function analyses in order to assign fibers to groups (fiber types) and to determine which stains contribute most to the distinction between groups. As a control, we processed a well characterized mammalian muscle (rat sternomastoid) simultaneously. Our results suggest that both neck and limb muscle in Pseudemys can best described as falling into three groups: (1) slow oxidative (SO) fibers; (2) fast oxidative glycolytic (FOG) fibers, with relatively high oxidative and glycolytic capacities; and (3) fast glycolytic (Fg) fibers, with low oxidative, low/intermediate α-GPDH, and high GPA activities. These three fiber types differ from like-named types in rat muscle both in the pH lability of their myosins and in their metabolic profiles.
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  • 91
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    Journal of Morphology 200 (1989) 
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  • 92
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    Journal of Morphology 200 (1989), S. 1-8 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Distribution and density of the chloride cells in the newly hatched larvae of teleosts vary depending on species and environmental salinity at hatching. In the euryhaline freshwater ayu (Plecoglossus altivelis), chloride cells are concentrated in the skin posterior to the pectoral fins and gradually decrease in number toward the head and tail. In the stenohaline sea water flounder (Kareius bicoloratus), most chloride cells are localized at the inner membrane of gill chambers and in the skin near the openings of gill chambers, but only a few cells appear in the skin of the yolk sac. In the stenohaline freshwater carp (Cyprinus carpio), only a few small chloride cells are scattered in the body skin. The density and abundance of chloride cells appears to be correlated with the different requirements for osmoregulation in teleost larvae.
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  • 93
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    Notes: This investigation relates the occlusal morphology of the continuously growing molars of common wombats (Vombatus ursinus) to the underlying enamel ultrastructure that was investigated using the techniques of light microscopy, scanning electron microscopy, and transmission electron microscopy. The main feature of the occlusal enamel was a prominent ridge, which followed the contour of the dentine-enamel junction (DEJ). It was found that the occlusal morphology depended upon the orientation of the dentinal and enamel tissues, variations in prism orientation, Hunter-Schreger bands (HSB), and presence or absence of cleavage. Cleavage of enamel promoted by sheets of parallel prisms occurred along the face between the DEJ and the ridge, whereas on the face between the ridge and the cementum-enamel junction (CEJ) cleavage was inhibited by HSB. The slope of the latter face was mainly due to a decrease in wear resistance going from the ridge, where prisms were intercepted transversely, toward the CEJ, where they were intercepted obliquely. Occasionally small surface undulations were observed on the face between the ridge and the CEJ. These undulations were found to correspond to gradually decussating enamel regions. The pronounced cleavage of enamel parallel to the face between the DEJ and the ridge played an important role in conferring on the continuously growing molars a distinct property to develop and maintain a self-sharpening ridge throughout the life of the tooth.
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  • 94
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    Journal of Morphology 200 (1989), S. 215-230 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The internal anatomy of juveniles and adults of Hypochthonius rufulus selected as a model species representing the lower Oribatida was investigated histologically and compared with the published characteristics of higher oribatid internal anatomy. In this species, the cuticle is weak and flexible, consisting of epicuticle and endocuticle on the body, but including an exocuticle between the epicuticle and endocuticle of the legs. Walls of the mesenteron in the digestive tract are of uniform thickness and structure without any regional thickening, and there are no proventricular glands. The hindgut is apparently divided into five parts: colon 1 and 2, rectum 1 and 2, and anal atrium; food bolus exhibits a multilamellar structure in this section. The glandular system is less diversified than in some other oribatids. Tracheae are apparently lacking. Females possess only two relatively large eggs, filling one-half of opistosoma, and they lack ovipositors. Eggs are present in females during the whole year. Gonad buds appear first in the protonymph stage. Only one male was found among 146 adults studied. No male external organ (aedeagus or penis) is present.
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  • 95
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    Journal of Morphology 200 (1989), S. 199-213 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: We have investigated the structural organization of the wind-sensitive giant interneurons in the thoracic ganglia of adult American cockroaches. These seven bilaterally paired interneurons have long been thought to play a role in directing the wind-elicited escape response of the animal. Each of the giant interneurons was labeled individually by intracellular injection of cobaltic hexamine chloride. An individual giant interneuron could be reliably identified from animal to animal based on its branching pattern in thoracic ganglia. The axons of the giant interneurons are situated on each side of the nerve cord in two recognizable subgroups. Comparisons of the axonal arbors of the dorsal and ventral subgroups showed that they project into distinct but partly overlapping regions of thoracic ganglia. Three of the giant interneurons were found to have axonal arbors that cross the longitudinal midline of thoracic and abdominal ganglia. Bilateral pairs of these giant interneurons were labeled concomitantly, and many of the individual neurites from these cells appeared to be closely apposed. All these morphological characteristics are discussed in relation to the connectivity and functional significance of the giant interneurons.
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  • 96
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    Journal of Morphology 200 (1989), S. 247-253 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The ultrastructure of the adductor muscle of the boring clam (Tridacna crocea) was investigated. The adductor was composed of opaque and translucent portions. The opaque portion contained smooth muscle cells; the translucent portion contained obliquely striated cells. Smooth muscle cells were classified, according to the statistically analyzed diameters of their thick myofilaments, into two types, S-1 and S-2. S-1 cells had thick myofilaments, 50-60 nm in diameter. S-2 cells had thick myofilaments of two sizes, about 55-65 nm and 85-100 nm in diameter, respectively. Obliquely striated muscle cells in the translucent portion were also classified into two types: O-1 cells, with thick myofilaments 30-35 nm in diameter, and O-2 cells, with myofilaments of 50-60 nm.
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  • 97
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    Journal of Morphology 201 (1989) 
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  • 98
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    Journal of Morphology 201 (1989), S. 23-37 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
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    Topics: Biology , Medicine
    Notes: Sensory and motor innervation of the proboscis by branches of the maxillary and labial nerves of the worker honey bee has been investigated in specimens stained vitally by methylene blue or viewed by scanning electron microscopy. A chordotonal organ consisting of a single scolopidium is present in the maxillary palp. Flexion of the maxillary palp occurs only passively, induced by the flexion of the galea. This chordotonal organ may function as a proprioceptor for the movement of the galea. Another chordotonal organ exists in the prementum of the labium. It contains, on the average, 12 sensory cells and presumably responds to the bending of the labial palp. A nerve-net of bipolar cells arises from the sensory branches of the maxillary nerve. Free nerve endings derived from the periphery of this nerve-net expand broadly on the intersegmental membranes connected to the stipes. The right and left nerves to the dilator muscles of the salivarium exchange branches, resulting in the reciprocal innervation of each muscle.
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  • 99
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    Journal of Morphology 201 (1989), S. 59-68 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The tectorial structures of the inner ear of the proteid salamander Proteus anguinus were studied with transmission and scanning electron microscopy in order to analyze the ultrastructure of the otoconial membranes and otoconial masses of the maculae and the tectorial membrane of the papilla amphibiorum. Both otoconial and tectorial membranes consist of two parts: (1) a compact part and (2) a fibrillar part that joins the membrane with the sensory epithelium. Masses of otoconia occupy the lumina above these membranes.There are two types of calcium carbonate crystals in the otoconial masses within the inner ear of Proteus anguinus. The relatively small otoconial mass of the utricular macula occupies an area no greater than the diameter of the sensory epithelium, and it is composed of calcite crystals. On the other hand, the enormous otoconial masses of the saccular macula and the lagenar macula are composed of aragonite crystals. In the sacculus and lagena, globular structures 2-9 m̈m in diameter were discovered on the lower surfaces of the otoconial masses above the sensory epithelia. These globules show a progression from smooth-surfaced, small globules to large globules with spongelike, rough surfaces. It is hypothesized that these globules are precursors of the aragonite crystals and that calcite crystals develop similarly in the utriculus. The presence of globular precursors in adult animals suggests that the formation of new crystals in the otoconial membranes of the sacculus and lagena of Proteus is a continuous, ongoing process.
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