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  • InTechOpen  (17)
  • Nature Publishing Group
  • Springer
  • Springer Nature
  • English  (29)
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  • English  (29)
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  • 1
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    Carbon Nanomaterials in Clean Energy Hydrogen Systems : Proceedings of the NATO Advanced Research Workhop on Using Carbon Nanomaterials in Clean-Energy Hydrogen Systems, Sudak, Crimea, Ukraine, 22-28 September, 2007 (2008)
    Springer
    Details
    Keywords: Atom ; Fulleren ; Fullerene ; Nanocar ; Nanomaterial ; Nanotube ; Transport ; carbon nanotubes ; electricity
    Description / Table of Contents: The 2007 ARW “Using Carbon Nanomaterials in Clean-Energy Hydrogen Systems” (UCNCEHS’2007) was held in September 22–28, 2007 in the remarkable town Sudak (Crimea, Ukraine) known for its heroic and unusual fate. In the tradition of the earlier conferences, UCNCEHS’2007 meeting served as an multidisciplinary forum for the presentation and discussion of the most recent research on transition to hydrogen-based energy systems, technologies for hydrogen production, storage, utilization, carbon nanomaterials processing and chemical behavior, energy and environmental problems. The aim of UCNCEHS’2007 was to provide the wide overview of the latest scientific results on basic research and technological applications of hydrogen interactions with carbon materials. The active representatives from research/academic organizations and governmental agencies could meet, discuss and present the most recent advances in hydrogen concepts, processes and systems, to evaluate current progress and to exchange academic information, to identify research needs and future development in this important area. This ARW should help further the progress of hydrogen-based science and promote the role of hydrogen and carbon nanomaterials in the energy field.
    ISBN: 9781402088988
    URL: https://doi.org/10.1007/978-1-4020-8898-8
    Language: English
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  • 2
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    Chapter Demographic and Clinical Characteristics of Mucinous Epithelial Ovarian Cancer, and Survival Following a Mucinous Epithelial Ovarian Cancer Diagnosis (2021)
    InTechOpen
    Details
    Publication Date: 2024-04-11
    Description: Alternative & renewable energy sources & technology
    Keywords: Technology, engineering, agriculture ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THV Alternative and renewable energy sources and technology
    Language: English
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  • 3
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    Chapter 4 Numerical Modelling of Industrial Induction (2021)
    InTechOpen
    Details
    Publication Date: 2024-04-04
    Description: Induction heating is a physical process extensively used in the metallurgical industry for different applications involving metal melting. The main components of an induction heating system are an induction coil connected to a power-supply providing an alternating electric current and a conductive workpiece to be heated, placed inside the coil. The alternating current traversing the coil generates eddy currents in the workpiece and by means of ohmic losses the workpiece is heated
    Keywords: industrial induction ; numerical modelling ; industrial induction ; numerical modelling ; Boundary value problem ; Dielectric heating ; Enthalpy ; Furnace ; Joule heating ; Rotational symmetry ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 4
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    Target Suitability and the Crime Drop (2021)
    Springer Nature
    Details
    Publication Date: 2021-02-10
    Description: This is a chapter from The Criminal Act: The Role and Influence of Routine Activity Theory edited by Martin A. Andresen and Graham Farrell. This chapter is available open access under a CC BY license. Target suitability is a cornerstone of Marcus Felson's routine activities approach, and critical in determining crime rates. Recent research identifies reduced target suitability, via improved security, as central to the 'crime drop' experienced in many countries. Studies in different countries show car theft fell with far more and better vehicle security. Yet increases in household security were more modest and do not track burglary's decrease as well. In this chapter, the authors explain that apparent anomaly as due more to an improvement in the quality of household security leading to reduced burglary. It is further suggested that improvements to home insulation in the UK that brought double glazing may have, somewhat inadvertently, introduced better frames and locks for doors and windows, that in turn reduced household burglary.; This is a chapter from The Criminal Act: The Role and Influence of Routine Activity Theory edited by Martin A. Andresen and Graham Farrell. This chapter is available open access under a CC BY license. Target suitability is a cornerstone of Marcus Felson's routine activities approach, and critical in determining crime rates. Recent research identifies reduced target suitability, via improved security, as central to the 'crime drop' experienced in many countries. Studies in different countries show car theft fell with far more and better vehicle security. Yet increases in household security were more modest and do not track burglary's decrease as well. In this chapter, the authors explain that apparent anomaly as due more to an improvement in the quality of household security leading to reduced burglary. It is further suggested that improvements to home insulation in the UK that brought double glazing may have, somewhat inadvertently, introduced better frames and locks for doors and windows, that in turn reduced household burglary.
    Keywords: Criminology ; Public safety ; bic Book Industry Communication::J Society & social sciences::JK Social services & welfare, criminology::JKV Crime & criminology
    Language: English
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  • 5
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    Chapter Optical Wireless and Millimeter Waves for 5G Access Networks (2021)
    InTechOpen
    Details
    Publication Date: 2024-04-11
    Description: Growing bandwidth demands are driving the search for increased network capacity leading to the exploration of new wavelength ranges for future communication systems. Therefore, we consider two technologies that offer increased transmission bandwidths by virtue of their high carrier frequencies, namely optical wireless and millimeter-wave transmission. After highlighting the relevant electromagnetic (EM) spectrum region, we briefly describe the applications and properties of each approach coupled with a short history of their development. This is followed by a performance comparison in two possible 5G links: outdoor point-to-point and indoor hotspots. We find that in both cases, there are regions where optical wireless communications (OWC) are better, but others where millimeter waves are to be preferred. Specifically, the former outperforms the latter over distances up to approximately 50 meters outdoors and a 10-meter hotspot radius indoors.
    Keywords: optical wireless communications (OWC), visible light communications (VLC), free space optics, infrared (IR) communications, millimeter-wave communications, 5G access ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications::TJKW WAP (wireless) technology
    Language: English
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  • 6
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    Chapter HLA-Transparent Distributed Simulation of Agent-based Systems (2021)
    InTechOpen
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    Publication Date: 2024-04-04
    Description: Applied mathematics
    Keywords: Mathematics & science ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBW Applied mathematics::PBWH Mathematical modelling
    Language: English
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  • 7
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    Chapter Optical fibers and optical fiber sensors used in radiation monitoring (2021)
    InTechOpen
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    Publication Date: 2024-04-11
    Description: Communications engineering / telecommunications
    Keywords: Technology, engineering, agriculture ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications::TJKW WAP (wireless) technology
    Language: English
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  • 8
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    Design of Heuristic Algorithms for Hard Optimization (2022)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2022-11-19
    Description: This open access book demonstrates all the steps required to design heuristic algorithms for difficult optimization. The classic problem of the travelling salesman is used as a common thread to illustrate all the techniques discussed. This problem is ideal for introducing readers to the subject because it is very intuitive and its solutions can be graphically represented. The book features a wealth of illustrations that allow the concepts to be understood at a glance. The book approaches the main metaheuristics from a new angle, deconstructing them into a few key concepts presented in separate chapters: construction, improvement, decomposition, randomization and learning methods. Each metaheuristic can then be presented in simplified form as a combination of these concepts. This approach avoids giving the impression that metaheuristics is a non-formal discipline, a kind of cloud sculpture. Moreover, it provides concrete applications of the travelling salesman problem, which illustrate in just a few lines of code how to design a new heuristic and remove all ambiguities left by a general framework. Two chapters reviewing the basics of combinatorial optimization and complexity theory make the book self-contained. As such, even readers with a very limited background in the field will be able to follow all the content.
    Keywords: Algorithms ; Heuristics ; Travelling Salesman ; Local Search ; Metaheuristics ; Combinatorial Optimization ; Artificial Intelligence ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJT Operational research ; bic Book Industry Communication::P Mathematics & science::PB Mathematics::PBU Optimization ; bic Book Industry Communication::P Mathematics & science::PB Mathematics::PBK Calculus & mathematical analysis::PBKS Numerical analysis ; bic Book Industry Communication::P Mathematics & science::PD Science: general issues::PDE Maths for scientists ; bic Book Industry Communication::U Computing & information technology::UY Computer science::UYQ Artificial intelligence
    Language: English
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  • 9
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    Chapter Screening of Soybean (Glycine Max (L.) Merrill) Genotypes for Resistance to Rust, Yellow Mosaic and Pod Shattering (2021)
    InTechOpen
    Details
    Publication Date: 2024-04-14
    Description: Applied optics
    Keywords: Technology, engineering, agriculture ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTB Applied optics
    Language: English
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  • 10
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    Chapter Semiconductor Optical Amplifier (SOA)–Based Amplification of Intensity-Modulated Optical Pulses — Deterministic Timing Jitter and Pulse Peak Power Equalization Analysis (2021)
    InTechOpen
    Details
    Publication Date: 2024-04-11
    Description: This chapter presents the fate of the charge carriers from the moment of its photogeneration in the perovskite to injection and transport into electrodes. Time-resolved electrical measurement techniques, terahertz (THz) spectroscopy and microwave (MW) conductivity, are primarily used to deconvolute ultrafast processes and to directly access behavior of charged species from the ps to µs timescales. Transient absorption and photoluminescence spectroscopy were also utilized to gain insight on carrier population dynamics and radiatively recombining charges. Photogenerated charged species were converted into highly mobile charges (µe = 12.5 cm2V-1s-1 and µh = 7.5 cm2V-1s-1) almost instantaneously (〈 0.2 ps), while the remaining loosely bounded excitons dissociate into mobile charges after 2-3 ps. This high mobility is maintained for at least 1 ns as obtained by THz spectroscopy, while its lifetime is at least few tens of µs as measured by the MW conductivity technique. Lowering the temperature increases carrier mobilities with T-1.6.Dependence and a 75 meV barrier energy is required for temperature-activated recombination. Finally, injection of hole from MAPbI3 to Spiro-OMeTAD was found to be ultrafast and the state and population of dark holes dictate its recombination.
    Keywords: THz spectroscopy, Time-resolved Microwave Conductivity (TRMC), photoconductivity, mobility ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THV Alternative and renewable energy sources and technology
    Language: English
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