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  • bic Book Industry Communication::J Society & social sciences::JF Society & culture: general  (6)
  • thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences  (6)
  • Chemistry
  • ddc:330
  • Logos Verlag Berlin  (14)
  • English  (14)
  • 2020-2024  (14)
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  • 2020-2024  (14)
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  • 1
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    Teachers' Beliefs and Strategies when Teaching Reading in Multilingual Settings (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2023-02-01
    Description: Globalization has not only changed our society, it has also had a profound effect on education. Many schools deal with student populations that due to migration have become increasingly multilingual. Politically, few would argue against the importance of multilingualism; rather, it is promoted to the fullest. However, in practical terms the challenges associated with teaching and educational policies have increased manifold as a result of the linguistic diversity among student bodies. Reading is certainly regarded as a key learning skill, however, the question arises as to how the students' life-world multilingualism is taken into consideration. Furthermore, being considered part of teachers' professional competence, teachers' mental processes and perceptions (beliefs) have been the focus in several different academic fields. Previous research suggests that there are significant links between teachers' beliefs and practices. This thesis explores the aforementioned aspects in greater detail, with the overall aim to gain a deeper understanding of teachers' beliefs and strategies when teaching reading in multilingual settings. Using a cross-disciplinary, qualitative research approach, the empirical inquiry is based on case studies within different, linguistically diverse settings. The case studies include classroom observations as well as teacher interviews in German, Swedish and Chilean grade 4 classrooms.
    Keywords: Social Science ; Education ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general ; bic Book Industry Communication::J Society & social sciences::JN Education
    Language: English
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  • 2
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    Modeling of Moving Sound Sources Based on Array Measurements (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2024-04-14
    Description: When auralizing moving sound sources in Virtual Reality (VR) environments, the two main input parameters are the location and radiated signal of the source. An array measurement-based model is developed to characterize moving sound sources regarding the two parameters in this thesis. This model utilizes beamforming, i.e. delay and sum beamforming (DSB) and compressive beamforming (CB) to obtain the locations and signals of moving sound sources. A spiral and a pseudorandom microphone array are designed for DSB and CB, respectively, to yield good localization ability and meet the requirement of CB. The de-Dopplerization technique is incorporated in the time-domain DSB to address moving source problems. Time-domain transfer functions (TDTFs) are calculated in terms of the spatial locations within the steering window of the moving source. TDTFs then form the sensing matrix of CB, thus allowing CB to solve moving source problem. DSB and CB are further extended to localize moving sound sources, and the reconstructed signals from the beamforming outputs are investigated to obtain the source signals. Moreover, localization and signal reconstruction are evaluated through varying parameters in the beamforming procedures, i.e. steering position, steering window length and source speed for a moving periodic signal using DSB, and regularization parameter, signal to noise ratio (SNR), steering window length, source speed, array to source motion trajectory and mismatch for a moving engine signal using CB. The parameter studies show guidelines of parameter selection based on the given situations in this thesis for modeling moving source using beamforming. Both algorithms are able to reconstruct the moving signals in the given scenarios. Although CB outperforms DSB in terms of signal reconstruction under particular conditions, the localization abilities of the two algorithms are quite similar. The practicability of the model has been applied on pass-by measurements of a moving loudspeaker using the designed arrays, and the results can match the conclusions drawn above from simulations. Finally, a framework on how to apply the model for moving source auralization is proposed.
    Keywords: Source modeling ; Moving sound sources ; Array measurements ; Auralization ; Beamforming ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences
    Language: English
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  • 3
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    Measurements in room acoustics (2023)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2024-04-04
    Description: Regardless of the field, measurements are essential for validating theories and making well-founded decisions. A criterion for the validity and comparability of measured values is their uncertainty. Still, in room acoustical measurements, the application of established rules to interpret uncertainties in measurement is not yet widespread. This raises the question of the validity and interpretability of room acoustical measurements. This work discusses the uncertainties in measuring room acoustical single-number quantities that complies with the framework of the ``Guide to the Expression of Uncertainty in Measurement''(GUM). Starting point is a structured search of variables that potentially influence the measurement of room impulse responses. In a second step, this uncertainty is propagated through the algorithm that determines single-number quantities. A second emphasis is placed on the investigation of spatial fluctuations of the sound field in auditoria. The spatial variance of the sound field in combination with an uncertain measurement position marks a major contribution to the overall measurement uncertainty. To reach general conclusions, the relation between changes in the measurement location and the corresponding changes in measured room acoustical quantities is investigated empirically in extensive measurement series. This study shows how precisely a measurement position must be defined to ensure a given uncertainty of room acoustical single-number quantities. The presented methods form a foundation that can be exibly extended in future investigations to include additional influences on the measurement uncertainty.
    Keywords: Auditorium acoustics ; Measurement uncertainty ; Uncertainty propagation ; Acoustic Array Measurement ; Sound field properties ; bic Book Industry Communication::P Mathematics & science::PH Physics::PHD Classical mechanics::PHDS Wave mechanics (vibration & acoustics) ; bic Book Industry Communication::T Technology, engineering, agriculture ; bic Book Industry Communication::T Technology, engineering, agriculture::TT Other technologies & applied sciences ; bic Book Industry Communication::T Technology, engineering, agriculture::TT Other technologies & applied sciences::TTA Acoustic & sound engineering ; 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 ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTA Acoustic and sound engineering
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  • 4
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    Media and Communication in Europe (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2023-02-02
    Description: This timely book explores how the media shape the Europeanization of the public sphere within the European Union (EU). Bringing together a range of international scholars in media studies and journalism and covering both traditional and online media, it argues that Europeanization is not just an idea - it is a real, ongoing process that we are experiencing every day. Assessing a wide range of actors and processes and acknowledging the diverse relationships between media and politics, the chapters edited by Agnieszka Stepinska reflect contemporary conceptualizations of Europeanization and unravel the complex mediatization of European politics. It covers topics as diverse as children's socialization within the European Union via kid's TV programmes; the impact of the 'Euroblogosphere' on policy decisions; and international broadcasting as one of the key elements to understanding new public diplomacy in Europe. Using the Polish EU presidency of 2011 as an extensive case study, the book's latter part shows what impact Poland's presidency had on its representation, both domestically and abroad, and questions the Presidency's actual power of attracting media attention. 'Media and Communication in Europe' is a valuable resource for any student and researcher interested in the complex relationship between the media and the EU.
    Keywords: Social Science ; Technology & Engineering ; Agriculture ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general ; bic Book Industry Communication::T Technology, engineering, agriculture::TV Agriculture & farming
    Language: English
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  • 5
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    Study of an alternative phase field model for low interfacial energy in elastic solids (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2024-04-05
    Description: In 2005, the hybrid model was published by Prof. H.-D. Alber and Prof. P. Zhu as an alternative to the Allen-Cahn model for the description of phase field transformations. With low interfacial energy, it is more efficient, since the resolution of the diffuse interface is numerically broader for the same solution accuracy and allows coarser meshing. The solutions of both models are associated with energy minimisation and in this work the error terms introduced in the earlier publications are discussed and documented using one and two dimensional numerical simulations. In the last part of this book, phase field problems, initially not coupled with material equations, are combined with linear elasticity and, after simple introductory examples, a growing martensitic inclusion is simulated and compared with literature data. In addition to the confirmed numerical advantage, another phenomenon not previously described in the literature is found: with the hybrid model, in contrast to the examples calculated with the Allen-Cahn model, an inclusion driven mainly by curvature energy does not disappear completely. The opposite problem prevents inclusions from growing from very small initial configurations, but this fact can be remedied by a very finely chosen diffuse interface width and by analysing and adjusting the terms that generate the modelling errors. The last example shows that the hybrid model can be used with numerical advantages despite the above mentioned peculiarities.
    Keywords: Science ; Chemistry ; Mathematics ; Science ; Physics ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::P Mathematics and Science::PB Mathematics ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 6
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    Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2024-04-14
    Description: Human sound localization helps to pay attention to spatially separated speakers using interaural level and time differences as well as angle-dependent monaural spectral cues. In a monophonic teleconference, for instance, it is much more difficult to distinguish between different speakers due to missing binaural cues. Spatial positioning of the speakers by means of binaural reproduction methods using head-related transfer functions (HRTFs) enhances speech comprehension. These HRTFs are influenced by the torso, head and ear geometry as they describe the propagation path of the sound from a source to the ear canal entrance. Through this geometry-dependency, the HRTF is directional and subject-dependent. To enable a sufficient reproduction, individual HRTFs should be used. However, it is tremendously difficult to measure these HRTFs. For this reason this thesis proposes approaches to adapt the HRTFs applying individual anthropometric dimensions of a user. Since localization at low frequencies is mainly influenced by the interaural time difference, two models to adapt this difference are developed and compared with existing models. Furthermore, two approaches to adapt the spectral cues at higher frequencies are studied, improved and compared. Although the localization performance with individualized HRTFs is slightly worse than with individual HRTFs, it is nevertheless still better than with non-individual HRTFs, taking into account the measurement effort.
    Keywords: Head-related transfer function ; Spatial audio ; Binaural hearing ; Anthropometry ; Sound localization ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences
    Language: English
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  • 7
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    Smart Universities (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2023-03-03
    Description: Institutions of learning at all levels are challenged by a fast and accelerating pace of change in the development of communications technology. Conferences around the world address the issue. Research journals in a wide range of scholarly fields are placing the challenge of understanding "Education's Digital Future" on their agenda. The World Learning Summit and LINQ Conference 2017 proceedings take this as a point of origin. Noting how the future also has a past: Emergent uses of communications technologies in learning are of course neither new nor unfamiliar. What may be less familiar is the notion of "disruption", found in many of the conferences and journal entries currently. Is the disruption of education and learning as transformative as in the case of the film industry, the music industry, journalism, and health? If so, clearly the challenge of understanding future learning and education goes to the core of institutions and organizations as much as pedagogy and practice in the classroom. One approach to the pursuit of a critical debate is the concept of Smart Universities – educational institutions that adopt to the realities of digital online media in an encompassing manner: How can we as smarter universities and societies build sustainable learning eco systems for coming generations, where technologies serve learning and not the other way around? Perhaps that is the key question of our time, reflecting concerns and challenges in a variety of scholarly fields and disciplines? These proceedings present the results from an engaging event that took place from 7th to 9th of June 2017 in Kristiansand, Norway.
    Keywords: Social Science ; Education ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general ; bic Book Industry Communication::J Society & social sciences::JN Education
    Language: English
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  • 8
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    Examining auditory selective attention (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2024-04-14
    Description: The aim of the present thesis is to examine the cognitive control mechanisms underlying auditory selective attention by considering the influence of variables that increase the complexity of an auditory scene. Therefore, technical aspects such as dynamic binaural hearing, room acoustics and head movements as well as those that influence the efficiency of cognitive processing are taken into account. Step-by-step the well-established dichotic-listening paradigm is extended into a realistic spatial listening paradigm. Conducted empirical surveys are based on a paradigm examining the intentional switching of auditory selective attention. Performance measure differences between the repetition of the target's spatial position and the related switch describe the loss of efficiency associated with redirecting attention from one target's location to another. To examine whether the irrelevant auditory information is decoded, interference in the processing of task-relevant and task-irrelevant information is created in the paradigm. Using the binaural-listening paradigm, the ability to intentionally switch auditory selective attention is tested when applying different methods of spatial reproduction. Essential differences between real sources, an individual and a non-individual binaural synthesis are found. As a step towards multi-talker scenarios in realistic environments participants are tested in differently reverberating environments, resulting in highly affected switch costs. Age-related effects are found when applying the binaural-listening paradigm, indicating difficulties for elderly to suppress processing the distractor's speech.
    Keywords: Auditory Selective Attention ; Binaural Listening ; VR-Environment ; Attention Switching ; Head-Related Transferfunction ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences
    Language: English
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  • 9
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    Separatism and Regionalism in Modern Europe (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2023-02-01
    Description: The end of the Cold War opened a Pandora's box of regionalism and separatism across Europe, and today they once again pose a significant threat to the territorial and political integrity of the traditional nation-states. Yet, the existence of various subnational groups is inevitable in democratic states. The scope of separatism and regionalism in Europe is quite wide. It includes de facto states, such as Kosovo, Transnistria, and North Cyprus; strong separatist movements aimed at achieving independence, like Catalonia, Basque Country, Scotland, Flanders, and Faroe Islands; strong movements aimed at achieving a more regional autonomy, for example, Lombardy and Veneto; and weaker regional movements, which could potentially escalate in the future, such as Transylvania in Romania or Vojvodina in Serbia. This edited volume tackles all the above-mentioned regional moments and even includes Greenland as a bonus. It brings together seventeen prominent scholars from a wide range of European and North American academic institutions who compiled ten chapters to shed light on the revival of regionalism and separatism via a thorough evaluation and analysis of some of the most important current separatist and regionalist/autonomist movements across modern Europe. Chris Kostov is an Adjunct Professor in the School of International Relations at IE University Madrid, Spain. He earned his PhD in History and Canadian Studies from the University of Ottawa, Canada. His main academic interests include Balkan and modern European nationalism and Communist repressions in Cold War Eastern Europe.
    Keywords: Social Science ; Political Science ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general ; bic Book Industry Communication::J Society & social sciences::JP Politics & government
    Language: English
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  • 10
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    Inside Barefoot Economics (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2023-02-01
    Description: "... the practice of barefoot economics requires more than simply the lived experience of poverty-related phenomena. In contrast to the prevailing positivist paradigm within the scientific discipline of economics that tends to cultivate particular ways of economic thinking by taking their linguistic presuppositions for granted, barefoot economics involves challenging one's own horizon of possibility for economic thought by putting commonly accepted academic jargon in abeyance.''
    Keywords: Business & Economics ; Social Science ; Philosophy ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general ; bic Book Industry Communication::H Humanities::HP Philosophy
    Language: English
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