Characterization Of Terahertz Emission From High Resistivity Fe Doped Bulk Ga0 69in0 31as Based Photoconducting Antennas
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Characterization Of Terahertz Emission From High Resistivity Fe Doped Bulk Ga0 69in0 31as Based Photoconducting Antennas
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Author : Suranjana Sengupta
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-06-07
Characterization Of Terahertz Emission From High Resistivity Fe Doped Bulk Ga0 69in0 31as Based Photoconducting Antennas written by Suranjana Sengupta and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-07 with Science categories.
Terahertz science and technology is attracting great interest due to its application in a wide array of fields made possible by the development of new and improved terahertz radiation sources and detectors. This book focuses on the development and characterization of one such source - namely the semi-large aperture photoconducting (PC) antenna fabricated on Fe-doped bulk Ga0.69In0.31As substrate. The high ultrafast carrier mobility, high resistivity, and subpicosecond carrier lifetime along with low bandgap make Ga0.69In0.31As an excellent candidate for PC antenna based THz emitter that can be photoexcited by compact Yb-based multiwatt laser systems for high power THz emission. The research is aimed at evaluating the impact of physical properties of a semi-large aperture Ga0.69In0.31As PC antenna upon its THz generation efficiency, and is motivated by the ultimate goal of developing a high-power terahertz radiation source for time-domain terahertz spectroscopy and imaging systems.
15th Nordic Baltic Conference On Biomedical Engineering And Medical Physics
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Author : Kim Dremstrup
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-06-17
15th Nordic Baltic Conference On Biomedical Engineering And Medical Physics written by Kim Dremstrup and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-17 with Technology & Engineering categories.
This volume presents the Proceedings of the 15th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics. NBC 2011 brought together science, education and business under the motto “Cooperation for health”. The topics covered by the Conference Proceedings include: Imaging, Biomechanics, Neural engineering, Sport Science, Cardio-pulmonary engineering, Medical Informatics, Ultrasound, Assistive Technology, Telemedicine, and General Biomedical Engineering.
Adaptive And Natural Computing Algorithms
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Author : Andrej Dobnikar
language : en
Publisher: Springer
Release Date : 2011-04-09
Adaptive And Natural Computing Algorithms written by Andrej Dobnikar and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-09 with Computers categories.
The two-volume set LNCS 6593 and 6594 constitutes the refereed proceedings of the 10th International Conference on Adaptive and Natural Computing Algorithms, ICANNGA 2010, held in Ljubljana, Slovenia, in April 2010. The 83 revised full papers presented were carefully reviewed and selected from a total of 144 submissions. The first volume includes 42 papers and a plenary lecture and is organized in topical sections on neural networks and evolutionary computation.
A Cultural Historical Perspective On Mathematics Teaching And Learning
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Author : Wolff-Michael Roth
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-11-22
A Cultural Historical Perspective On Mathematics Teaching And Learning written by Wolff-Michael Roth and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-22 with Education categories.
Eighty years ago, L. S. Vygotsky complained that psychology was misled in studying thought independent of emotion. This situation has not significantly changed, as most learning scientists continue to study cognition independent of emotion. In this book, the authors use cultural-historical activity theory as a perspective to investigate cognition, emotion, learning, and teaching in mathematics. Drawing on data from a longitudinal research program about the teaching and learning of algebra in elementary schools, Roth and Radford show (a) how emotions are reproduced and transformed in and through activity and (b) that in assessments of students about their progress in the activity, cognitive and emotional dimensions cannot be separated. Three features are salient in the analyses: (a) the irreducible connection between emotion and cognition mediates teacher-student interactions; (b) the zone of proximal development is itself a historical and cultural emergent product of joint teacher-students activity; and (c) as an outcome of joint activity, the object/motive of activity emerges as the real outcome of the learning activity. The authors use these results to propose (a) a different conceptualization of the zone of proximal development, (b) activity theory as an alternative to learning as individual/social construction, and (c) a way of understanding the material/ideal nature of objects in activity. Wolff-Michael Roth is Lansdowne Professor at the University of Victoria, Canada. He researches scientific and mathematical cognition along the life span from cultural-historical and phenomenological perspectives. He has conducted research in science and mathematics classrooms as well as having realized multi-year ethnographic studies of science and mathematics in workplaces and scientific research. Luis Radford is full professor at Laurentian University in Canada. His research interests include the investigation of mathematics thinking and knowing from a cultural-semiotic embodied perspective and the historical and cultural roots of cognition. For many years he has been conducting classroom research with primary and high-school teachers about the teaching and learning of mathematics.
A Cmos Self Powered Front End Architecture For Subcutaneous Event Detector Devices
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Author : Jordi Colomer-Farrarons
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-02-17
A Cmos Self Powered Front End Architecture For Subcutaneous Event Detector Devices written by Jordi Colomer-Farrarons and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-02-17 with Technology & Engineering categories.
A CMOS Self-Powered Front-End Architecture for Subcutaneous Event-Detector Devices presents the conception and prototype realization of a Self-Powered architecture for subcutaneous detector devices. The architecture is designed to work as a true/false (event detector) or threshold level alarm of some substances, ions, etc... that are detected through a three-electrodes amperometric BioSensor approach. The device is envisaged as a Low-Power subcutaneous implantable application powered by an inductive link, one emitter antenna at the external side of the skin and the receiver antenna under the skin. The sensor is controlled with a Potentiostat circuit and then, a post-processing unit detects the desired levels and activates the transmission via a backscattering method by the inductive link. All the instrumentation, except the power module, is implemented in the so called BioChip. Following the idea of the powering link to harvest energy of the magnetic induced link at the implanted device, a Multi-Harvesting Power Chip (MHPC) has been also designed.
Activity Recognition In Pervasive Intelligent Environments
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Author : Liming Chen
language : en
Publisher: Atlantis Press
Release Date : 2011-05-12
Activity Recognition In Pervasive Intelligent Environments written by Liming Chen and has been published by Atlantis Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-05-12 with Computers categories.
This book consists of a number of chapters addressing different aspects of activity recognition, roughly in three main categories of topics. The first topic will be focused on activity modeling, representation and reasoning using mathematical models, knowledge representation formalisms and AI techniques. The second topic will concentrate on activity recognition methods and algorithms. Apart from traditional methods based on data mining and machine learning, we are particularly interested in novel approaches, such as the ontology-based approach, that facilitate data integration, sharing and automatic/automated processing. In the third topic we intend to cover novel architectures and frameworks for activity recognition, which are scalable and applicable to large scale distributed dynamic environments. In addition, this topic will also include the underpinning technological infrastructure, i.e. tools and APIs, that supports function/capability sharing and reuse, and rapid development and deployment of technological solutions. The fourth category of topic will be dedicated to representative applications of activity recognition in intelligent environments, which address the life cycle of activity recognition and their use for novel functions of the end-user systems with comprehensive implementation, prototyping and evaluation. This will include a wide range of application scenarios, such as smart homes, intelligent conference venues and cars.
A Basis Theory Primer
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Author : Christopher Heil
language : en
Publisher: Springer Science & Business Media
Release Date : 2011
A Basis Theory Primer written by Christopher Heil and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Mathematics categories.
This textbook is a self-contained introduction to the abstract theory of bases and redundant frame expansions and their use in both applied and classical harmonic analysis. The four parts of the text take the reader from classical functional analysis and basis theory to modern time-frequency and wavelet theory. Extensive exercises complement the text and provide opportunities for learning-by-doing, making the text suitable for graduate-level courses. The self-contained presentation with clear proofs is accessible to graduate students, pure and applied mathematicians, and engineers interested in the mathematical underpinnings of applications.
A Feature Centric View Of Information Retrieval
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Author : Donald Metzler
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-09-18
A Feature Centric View Of Information Retrieval written by Donald Metzler and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-18 with Computers categories.
Commercial Web search engines such as Google, Yahoo, and Bing are used every day by millions of people across the globe. With their ever-growing refinement and usage, it has become increasingly difficult for academic researchers to keep up with the collection sizes and other critical research issues related to Web search, which has created a divide between the information retrieval research being done within academia and industry. Such large collections pose a new set of challenges for information retrieval researchers. In this work, Metzler describes highly effective information retrieval models for both smaller, classical data sets, and larger Web collections. In a shift away from heuristic, hand-tuned ranking functions and complex probabilistic models, he presents feature-based retrieval models. The Markov random field model he details goes beyond the traditional yet ill-suited bag of words assumption in two ways. First, the model can easily exploit various types of dependencies that exist between query terms, eliminating the term independence assumption that often accompanies bag of words models. Second, arbitrary textual or non-textual features can be used within the model. As he shows, combining term dependencies and arbitrary features results in a very robust, powerful retrieval model. In addition, he describes several extensions, such as an automatic feature selection algorithm and a query expansion framework. The resulting model and extensions provide a flexible framework for highly effective retrieval across a wide range of tasks and data sets. A Feature-Centric View of Information Retrieval provides graduate students, as well as academic and industrial researchers in the fields of information retrieval and Web search with a modern perspective on information retrieval modeling and Web searches.
A Clumsy Encounter
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Author : Claire Penketh
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-11-16
A Clumsy Encounter written by Claire Penketh and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-16 with Education categories.
A Clumsy Encounter offers an interrogation of inclusive education by exploring the point at which dyspraxia and drawing from observation meet within formal learning environments. Drawing on stories of individual experience, this book seeks to promote the interrogation of implicit educational practices. Here the complexity of observational drawing is examined not within a closed community of art education but within the social and cultural domain of other critical debates within education, specifically those related to inclusion. Pupils do not experience inclusion and exclusion in the abstract but through discipline-based and situated practices. This book aims to explore this complexity and disrupt approaches that might seek to rationalise and compartmentalise educational experience. A Clumsy Encounter reflects a cross-disciplinary perspective and will be of interest to academics, professionals and practitioners interested in the nature, role and value of art education as well as those with a particular interest in dyspraxia. It will also be of particular relevance to those concerned with hearing the voices of pupil experience of inclusive and exclusive educational practices.
A Hybrid Deliberative Layer For Robotic Agents
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Author : Ronny Hartanto
language : en
Publisher: Springer
Release Date : 2011-07-18
A Hybrid Deliberative Layer For Robotic Agents written by Ronny Hartanto and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-07-18 with Computers categories.
The Hybrid Deliberative Layer (HDL) solves the problem that an intelligent agent faces in dealing with a large amount of information which may or may not be useful in generating a plan to achieve a goal. The information, that an agent may need, is acquired and stored in the DL model. Thus, the HDL is used as the main knowledge base system for the agent. In this work, a novel approach which amalgamates Description Logic (DL) reasoning with Hierarchical Task Network (HTN) planning is introduced. An analysis of the performance of the approach has been conducted and the results show that this approach yields significantly smaller planning problem descriptions than those generated by current representations in HTN planning.