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Books > Professional & Technical > Energy technology & engineering > Electrical engineering > General

Third Harmonic Utilization in Permanent Magnet Machines (Hardcover, 1st ed. 2019): Kai Wang, Ziqiang Zhu Third Harmonic Utilization in Permanent Magnet Machines (Hardcover, 1st ed. 2019)
Kai Wang, Ziqiang Zhu
R2,662 Discovery Miles 26 620 Ships in 18 - 22 working days

This book investigates the utilization of harmonics in the permanent magnet (PM) or rotor shape to improve the torque density of PM brushless AC machines including three-phase inner rotor and outer rotor machines, five-phase machines, dual three-phase machines, linear machines, by means of analytical, finite element analyses, and as well as experimental validation. The torque density can be improved while the torque ripple remains low in PM shaping utilizing the 3rd harmonic. In this book, the analytical expression of output torque is derived for PM machines with rotor shape using the 3rd harmonic, and then the optimal 3rd harmonic for maximizing torque is analytically obtained. The book compares the PM shape in surface-mounted PM (SPM) machines and the rotor lamination shape in interior PM (IPM) machines utilizing the 3rd harmonic, and it becomes clear that their shaping methods and amount of torque improvement are different. In a five-phase PM machine, the 3rd harmonic can be utilized in both the current waveform and PM shapes to further improve the output torque. For the dual three-phase SPM machines without deteriorating the torque more than 30% when the optimal 3rd harmonic into both the current and PM shape are injected. The harmonics in airgap flux density have significant influence on the cogging torque, stator iron flux distribution, and radial force between the rotor and stator. These effects has been investigated as well in this book.

Scientific Computing in Electrical Engineering - Proceedings of the SCEE-2002 Conference held in Eindhoven (Hardcover, 2004... Scientific Computing in Electrical Engineering - Proceedings of the SCEE-2002 Conference held in Eindhoven (Hardcover, 2004 ed.)
Wilhelmus H Schilders, E. Jan W. Ter Maten, Stephan H.M.J. Houben
R4,243 Discovery Miles 42 430 Ships in 18 - 22 working days

The fourth international conference on Scientific Computing in Electrical En- gineering (SCEE) was held at the Eindhoven University of Technology, from 23rd to 28th June, 2002. It was sponsored by Philips Research Laborato- ries Eindhoven, the Eindhoven University of Technology, Computer Simula- tion Technology (CST) from Darmstadt, ABB Corporate Research, Thales Netherlands,the European Consortium for Mathematics in Industry (ECMI), the University of Rostock (organiser of SCEE-2000), the European network for Mathematics, Computing and Simulation for Industry (MACSI-net), the Royal Netherlands Academy of Arts and Sciences (KNAW), and the Scien- tific Computing Group of the Eindhoven University of Technology. The Program Committee consisted of: Dr. Alain Bossavit, Electricite de France, Clamart, France. Dr. Uwe Feldmann, Infineon Technologies A.G., Munich, Germany. Prof.Dr. Leszek Demkowicz, University of Texas at Austin, USA. Dr. Michael Gunther, Universitat Karlsruhe, Germany. Prof.Dr. Ulrich Langer, Johannes Kepler Universitat, Linz, Austria. Dr. Jan ter Maten,Philips Research Laboratories Eindhoven, The Nether- lands. Prof.Dr. Ursula van Rienen, Universitat Rostock, Germany. Prof.Dr. Jaijeet Roychowdhury, University of Minnesota, USA. - Prof.Dr. Wil Schilders, Technische Universiteit Eindhoven and Philips Research Laboratories Eindhoven, The Netherlands. - Prof.Dr. Thomas Weiland, Technische Universitat Darmstadt, Germany.

Risk-Based Maintenance for Electricity Network Organizations (Hardcover, 1st ed. 2017): Ravish Preshant Yashraj Mehairjan Risk-Based Maintenance for Electricity Network Organizations (Hardcover, 1st ed. 2017)
Ravish Preshant Yashraj Mehairjan
R3,516 Discovery Miles 35 160 Ships in 18 - 22 working days

This book focuses on the introduction of new and modern maintenance management frameworks of assets in the electricity & gas network sector and more specifically, on electricity networks for distribution. The author describes methodologies for developing and implementing maintenance management maturity models, using case studies to show how these have been applied. These maturity models are discussed as part of an overarching, multi-disciplinary organizational maintenance management professionalization framework. This book adds a new dimension to the well-known Reliability Centered Maintenance (RCM) method, by incorporating failure modes via multiple scenarios into business values, by means of statistical risk calculation methods. The author demonstrates a method called Utility Risk Linked RCM, which uses a statistical tool to develop failure models which can be used to predict future failure behavior of assets in relation to corporate business values. This new method is a practical, structured and comprehensive framework for assessing risk based maintenance policies. The book also proposes a condition monitoring framework that can be used as a guide to assist asset managers in identifying the relationship between failure modes, ageing processes to select amongst condition monitoring regimes.

In-Situ Microscopy in Materials Research - Leading International Research in Electron and Scanning Probe Microscopies... In-Situ Microscopy in Materials Research - Leading International Research in Electron and Scanning Probe Microscopies (Hardcover, 1997 ed.)
Pratibha L. Gai
R4,201 Discovery Miles 42 010 Ships in 18 - 22 working days

2. High Temperature UHV-STM System 264 3. Hydrogen Desorption Process on Si (111) Surface 264 4. (7x7) - (1 xl) Phase Transition on Si (111) Surface 271 Step Shifting under dc Electric Fields 275 5. 6. Conclusions 280 Acknowledgements and References 281 12. DYNAMIC OBSERVATION OF VORTICES IN SUPERCONDUCTORS USING ELECTRON WAVES 283 by Akira Tonomura 1. Introduction 283 2. Experimental Method 284 2. 1 Interference Microscopy 284 2. 2 Lorentz Microscopy 287 Observation of Superconducting Vortices 288 3. 3. 1 Superconducting Vortices Observed by Interference Microscopy 288 3. 1. 1 Profile Mode 288 3. 1. 2 Transmission Mode 291 3. 2 Superconducting Vortices Observed by Lorentz Microscopy 293 3. 3 Observation of Vortex Interaction with Pinning Centers 294 3. 3. 1 Surface Steps 295 3. 3. 2 Irradiated Point Defects 296 4. Conclusion 298 References 299 13. TEM STUDIES OF SOME STRUCTURALLY FLEXIBLE SOLIDS AND THEIR ASSOCIATED PHASE TRANSFORMATIONS 301 by Ray L. Withers and John G. Thompson 1. Introduction 301 2. Tetrahedrally Comer-Connected Framework Structures 302 3. Tetragonal a-PbO 311 4. Compositionally Flexible Anion-Deficient Fluorites and the "Defect Fluorite" to C-type Sesquioxide Transition 320 5. Summary and Conclusions 327 Acknowledgements and References 327 Author Index 331 Subject Index 333 List of Contributors A. ASEEV Institute of Semiconductor Physics, Russian Academy of Sciences Novosibirsk, 630090, pr. ac. , Lavrentjeva 13, RUSSIA E. BAUER Department of Physics and Astronomy, Arizona State University Tempe, AZ 85287-1504, U. S. A. G. H.

Power Generation from Solid Fuels (Hardcover, 2010 ed.): Hartmut Spliethoff Power Generation from Solid Fuels (Hardcover, 2010 ed.)
Hartmut Spliethoff
R5,283 Discovery Miles 52 830 Ships in 18 - 22 working days

Power Generation from Solid Fuels introduces the different technologies to produce heat and power from solid fossil (hard coal, brown coal) and renewable (biomass, waste) fuels, such as combustion and gasification, steam power plants and combined cycles etc. The book discusses technologies with regard to their efficiency, emissions, operational behavior, residues and costs. Besides proven state of the art processes, the focus is on the potential of new technologies currently under development or demonstration.

The main motivation of the book is to explain the technical possibilities for reducing CO2 emissions from solid fuels. The strategies which are treated are: more efficient power and heat generation technologies, processes for the utilisation of renewable solid fuels, such as biomass and waste, and technologies for carbon capture and storage.

Power Generation from Solid Fuels provides, both to academia and industry, a concise treatment of industrial combustion of all types of solid, hopefully inspiring the next generation of engineers and scientists.

Advanced Verification Techniques - A SystemC Based Approach for Successful Tapeout (Hardcover, 2004 ed.): Leena Singh, Leonard... Advanced Verification Techniques - A SystemC Based Approach for Successful Tapeout (Hardcover, 2004 ed.)
Leena Singh, Leonard Drucker
R4,226 Discovery Miles 42 260 Ships in 18 - 22 working days

"As chip size and complexity continues to grow exponentially, the challenges of functional verification are becoming a critical issue in the electronics industry. It is now commonly heard that logical errors missed during functional verification are the most common cause of chip re-spins, and that the costs associated with functional verification are now outweighing the costs of chip design. To cope with these challenges engineers are increasingly relying on new design and verification methodologies and languages. Transaction-based design and verification, constrained random stimulus generation, functional coverage analysis, and assertion-based verification are all techniques that advanced design and verification teams routinely use today. Engineers are also increasingly turning to design and verification models based on C/C++ and SystemC in order to build more abstract, higher performance hardware and software models and to escape the limitations of RTL HDLs. This new book, Advanced Verification Techniques, provides specific guidance for these advanced verification techniques. The book includes realistic examples and shows how SystemC and SCV can be applied to a variety of advanced design and verification tasks."
- Stuart Swan

Operator Theory for Electromagnetics - An Introduction (Hardcover, 2002 ed.): George W. Hanson, Alexander B. Yakovlev Operator Theory for Electromagnetics - An Introduction (Hardcover, 2002 ed.)
George W. Hanson, Alexander B. Yakovlev
R3,247 Discovery Miles 32 470 Ships in 18 - 22 working days

While there are many excellent books available on fundamental and applied electromagnetics, most introduce operator concepts in an ad hoc manner, and few discuss the subject within the general framework of operator theory. This is in contrast to quantum theory, where the use of operators and concepts from functional analysis is common. However, casting electromagnetic problems in terms of operator theory produces useful insights into the mathematical properties and physical characteristics of solutions. For instance, the commonly used modal expansion of fields in waveguides are immediately justified upon identifying the differential operators as being of the appropriate Sturm-Liouville type. As another example, existence, uniqueness and solvability of integral formulations can often be settled by appealing to the theory of Fredholm operators. Many other examples that illustrate the value of abstracting problems to an operator level are provided. Although the book focuses on mathematical fundamentals, it is written from the perspective of engineers and applied scientists working in electromagnetics. The book begins with a review of electromagnetic theory, including a discussion of singular integral operators commonly encountered in applications. It then turns to a self-contained introduction to operator theory, including basic functional analysis, linear operators, Green¿s functions and Green¿s operators, spectral theory, and Sturm-Liouville operators. The discussion is at an introductory mathematical level, presenting definitions and theorems, as well as proofs of the theorems when these are particularly simple or enlightening. The tools developed in this first part of the book are then applied to problems in classical electromagnetic theory: boundary-value problems and potential theory, transmission lines, waves in layered media, scattering problems in waveguides, and electromagnetic cavities.

Sensor Networks and Configuration - Fundamentals, Standards, Platforms, and Applications (Hardcover, 2007 ed.): Nitaigour P.... Sensor Networks and Configuration - Fundamentals, Standards, Platforms, and Applications (Hardcover, 2007 ed.)
Nitaigour P. Mahalik
R5,427 Discovery Miles 54 270 Ships in 18 - 22 working days

This book incorporates a selection of research and development papers. Its scope is on history and background, underlying design methodology, application domains and recent developments. The readers will be able to understand the underlying technology, philosophy, concepts, ideas, and principles, with regard to broader areas of sensor network. Aspects of sensor network and experimental results have been presented in proper order.

Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence (Hardcover, 2011 ed.): W. H. Tang,... Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence (Hardcover, 2011 ed.)
W. H. Tang, Q.-H. Wu
R4,125 Discovery Miles 41 250 Ships in 18 - 22 working days

In recent years, rapid changes and improvements have been witnessed in the field of transformer condition monitoring and assessment, especially with the advances in computational intelligence techniques. Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence applies a broad range of computational intelligence techniques to deal with practical transformer operation problems. The approaches introduced are presented in a concise and flowing manner, tackling complex transformer modelling problems and uncertainties occurring in transformer fault diagnosis. Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence covers both the fundamental theories and the most up-to-date research in this rapidly changing field. Many examples have been included that use real-world measurements and realistic operating scenarios of power transformers to fully illustrate the use of computational intelligence techniques for a variety of transformer modelling and fault diagnosis problems. Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence is a useful book for professional engineers and postgraduate students. It also provides a firm foundation for advanced undergraduate students in power engineering.

Adaptive Hybrid Active Power Filters (Hardcover, 1st ed. 2019): Lei Wang, Man-Chung Wong, Chi-Seng Lam Adaptive Hybrid Active Power Filters (Hardcover, 1st ed. 2019)
Lei Wang, Man-Chung Wong, Chi-Seng Lam
R3,802 Discovery Miles 38 020 Ships in 18 - 22 working days

This book introduces advanced thyristor-based shunt hybrid active power filters (HAPFs) for power quality improvement in power grids, which are characterized by a low dc-link operating voltage and a wide compensation range. This means they can overcome the high dc-link voltage requirement of conventional active power filters and the narrow compensation range problem of LC-coupling hybrid active power filters. Consisting of 10 chapters, the book discusses the principle, design, control and hardware implementation of thyristor-based hybrid active power filters. It covers 1) V-I characteristics, cost analysis, power loss and reliability studies of different power filters; 2) mitigation of the harmonic injection technique for thyristor-controlled parts; 3) nonlinear pulse width modulation (PWM) control; 4) parameter design methods; 5) minimum inverter capacity design; 6) adaptive dc-link voltage control; 7) unbalanced control strategy; 8) selective compensation techniques; and 9) the hardware prototype design of thyristor-based HAPFs, verified by simulation and experimental results. It enables readers to gain an understanding of the basic power electronics techniques applied in power systems as well as the advanced techniques for controlling, implementing and designing advanced thyristor-based HAPFs.

Digital Signal Processing for Measurement Systems - Theory and Applications (Hardcover, 2006 ed.): Gabriele D'Antona,... Digital Signal Processing for Measurement Systems - Theory and Applications (Hardcover, 2006 ed.)
Gabriele D'Antona, Alessandro Ferrero
R1,561 Discovery Miles 15 610 Ships in 18 - 22 working days

This excellent Senior undergraduate/graduate textbook offers an unprecedented measurement of science perspective on DSP theory and applications, a wealth of definitions and real-life examples making it invaluable for students, while practical.

Adaptive Voltage Control in Power Systems - Modeling, Design and Applications (Hardcover, 2007 ed.): Giuseppe Fusco, Mario Russo Adaptive Voltage Control in Power Systems - Modeling, Design and Applications (Hardcover, 2007 ed.)
Giuseppe Fusco, Mario Russo
R2,745 Discovery Miles 27 450 Ships in 18 - 22 working days

Power quality is a pressing concern in electric power systems. One of the main requirements of power quality management is the guarantee of a sinusoidal voltage waveform with adequate amplitude at each node of the network. The fulfilment of such a control objective is facilitated by adaptive systems which can account for unpredictable fluctuations in operating conditions.

Adaptive Voltage Control in Power Systems, a self-contained blend of theory and novel application, is an in-depth treatment of such adaptive control schemes. The reader moves from power-system-modelling problems through illustrations of the main adaptive control systems (self-tuning, model-reference and nonlinearities compensation) to a detailed description of design methods: Kalman filtering, parameter-identification algorithms and discrete-time controller design are all represented. Case studies address applications issues in the implementation of adaptive voltage control.

Practicing engineers and researchers in power systems and control engineering will find this monograph, written by representatives of each field, to be a valuable synthesis of both while its accessible style will also appeal to graduate students.

Wireless Communications for Power Substations: RF Characterization and Modeling (Hardcover, 1st ed. 2019): Basile L. Agba,... Wireless Communications for Power Substations: RF Characterization and Modeling (Hardcover, 1st ed. 2019)
Basile L. Agba, Fabien Sacuto, Minh Au, Fabrice Labeau, Francois Gagnon
R3,791 Discovery Miles 37 910 Ships in 18 - 22 working days

This book consists of the identification, characterization, and modeling of electromagnetic interferences in substations for the deployment of wireless sensor networks. The authors present in chapter 3 the measurement setup to record sequences of impulsive noise samples in the ISM band of interest. The setup can measure substation impulsive noise, in wide band, with enough samples per time window and enough precision to allow a statistical study of the noise. During the measurement campaign, the authors recorded around 120 noise sequences in different substations and for four ranges of equipment voltage, which are 25 kV, 230 kV, 315 kV and 735 kV. A characterization process is proposed, by which physical characteristics of partial discharge can be measured in terms of first- and second-order statistics. From the measurement campaign, the authors infer the characteristics of substation impulsive noise as a function of the substation equipment voltage, and can provide representative parameters for the four voltage ranges and for several existing impulsive noise models. The authors investigate in chapters 4 and 5 the modeling of electromagnetic interferences caused by partial discharge sources. First, the authors propose a complete and coherent approach model that links physical characteristics of high-voltage installations to the induced radio-interference spectra of partial discharge sources. The goodness-of-fit of the proposed physical model has been measured based on some interesting statistical metrics. This allows one to assess the effectiveness of the authors' approach in terms of first- and second-order statistics. Chapter 6 proposes a model based on statistical approach. Indeed, substation impulsive noise is composed of correlated impulses, which would require models with memory in order to replicate a similar correlation. Among different models, we have configured a Partitioned Markov Chain (PMC) with 19 states (one state for the background noise and 18 states for the impulse); this Markov-Gaussian model is able to generate impulsive noise with correlated impulse samples. The correlation is observable on the impulse duration and the power spectrum of the impulses. Our PMC model provides characteristics that are more similar to the characteristics of substation impulsive noise in comparison with other models, in terms of time and frequency response, as well as Probability Density Functions (PDF). Although PMC represents reliably substation impulsive noise, the model remains complex in terms of parameter estimation due to a large number of Markov states, which can be an obstacle for future wireless system design. In order to simplify the model, the authors decrease the number of states to 7 by assigning one state to the background noise and 6 states to the impulse and we call this model PMC-6. PMC-6 can generate realistic impulses and can be easily implemented in a receiver in order to mitigate substation impulsive noise. Representative parameters are provided in order to replicate substation impulsive noise for different voltage ranges (25-735 kV). Chapter 7, a generalized radio-noise model for substations is proposed, in which there are many discharges sources that are randomly distributed over space and time according to the Poisson field of interferers approach. This allows for the identification of some interesting statistical properties of moments, cumulants and probability distributions. These can, in turn, be utilized in signal processing algorithms for rapid partial discharge's identification, localization, and impulsive noise mitigation techniques in wireless communications in substations. The primary audience for this book is the electrical and power engineering industry, electricity providers and companies who are interested in substation automation systems using wireless communication technologies for smart grid applications. Researchers, engineers and students studying and working in wireless communication will also want to buy this book as a reference.

Dielectric Phenomena In High Voltage Engineering (Hardcover): F. W. Peek Dielectric Phenomena In High Voltage Engineering (Hardcover)
F. W. Peek
R1,022 Discovery Miles 10 220 Ships in 10 - 15 working days

Originally published in 1915. PREFACE: It is the object of the author to give in this book the properties of gaseous, liquid and solid insulations, and methods of utilizing these properties to the best advantage in the problems of highvoltage engineering. Such problems require a knowledge, not only of the laws and mechanism of breakdown of dielectrics as determined by experiment, but also a simple working knowledge of the dielectric circuit. Methods that have proved useful in designing apparatus, transmission lines, insulators, bushings, etc., are discussed and illustrated by practical application. In addition, such subjects as the manner of making extensive engineering investigations and of reducing data, the measurement of high voltages, the effects of impulse and high-frequency voltages, methods of draw- ing dielectric fields, outline of modern theory, various dielectric phenomena, etc., are considered. In all cases where laws and discussions of dielectric phenomena are given, it has been thought best to accompany these with experimental data. Much original work is given, as well as reference to other in- vestigations. The authors extensive research was made possible by facilities afforded by the Consulting Engineering Department of the General Electric Company, for which acknowledgment is made. Thanks are due Mr. H. K. Humphrey, and others, who have greatly assisted in the experiments and calculations. SCHENECTADY, N. Y., April, 1915. Contents include: PAGE PREFACE v DIELECTRIC UNITS xi TABLE OF SYMBOLS, xiii CHAPTER I INTRODUCTION. ..... v ... v General discussion of energy transfer Experimental plots of dielectric and magnetic fields Analogy between magnetic and dielectric fieldsAnalogy with Hooke s Law. CHAPTER II THE DIELECTRIC FIELD AND DIELECTRIC CIRCUIT 8 Mathematical Consideration General treatment of the dielectric field and dielectric circuit with discussion of principles used Parallel planes Field between per- mittance, etc. Concentric cylinders Permittance or capacity flux density and gradient Parallel wires Principles used in superposition of fields determination of resultant fields equation of equipotential surfaces, lines of force and flux density permittance gradient and equigradient surfaces Concentric spheres Spheres Two small equal spheres, field of, and permittance two large equal spheres, gradient, permittance Conditions for spark-over and local breakdown or corona Collected formulae for common electrodes Combinations of dielectrics of different permittivities Dielectric flux refraction Dielectric in series Dielectric in multiple Flux control Imperfect electric elastivity or absorption in dielectrics dielectric hysteresis. CHAPTER III VISUAL CORONA 38 General Summary and Discussion Appearance Chemical action A. C. and D. C. spacing and size of conductor Laws of visual corona formation Theory of corona Electron theory Air films at small spacings Aii density Measuring voltage by corona Conductor material, cables, oil and water on the conductors, humidity. lonization Wave shape, current in wire. Experimental Study and Method of Reducing Experimental Data Tests showing the effects of size and spacing of conductors Air density Temperature Barometric pressure Strength of air films Effect of frequency Conductor material, oil, water, dirt, humidity lonization Current in wire Stranded conductors Split conductors...

Smart Micro-Grid Systems Security and Privacy (Hardcover, 1st ed. 2018): Anne V. D. M. Kayem, Stephen D. Wolthusen, Christoph... Smart Micro-Grid Systems Security and Privacy (Hardcover, 1st ed. 2018)
Anne V. D. M. Kayem, Stephen D. Wolthusen, Christoph Meinel
R2,653 Discovery Miles 26 530 Ships in 18 - 22 working days

This book is centered on Smart grids and micro-grids, as a cost-effective method of ensuring fair and equitable access to power in urban areas. It also considers scenarios where deploying smart grids can be both cost-prohibitively expensive and logistically challenging. Deploying smart microgrids instead, offers a reliable power solution but, as is the case in smart grids, a key issue is guaranteeing usability, trust, and reliability while protecting against energy theft. This book considers aspects such as state estimation, capacity planning, demand forecasting, price signals, and demand management with respect to energy theft. Straight-forward approaches to provoking energy theft on smart grids and micro-grids include mis-recordings power consumption/generation information and exposures of personally identifiable information or sensitive information. Attack models based on mis-recorded generation and/or consumption data and exposure of personally identifiable information, are also studied. In each case, countermeasures are proposed to circumvent the power theft attacks raised. Researchers in Smart Micro-grids security, cyber-physical systems, and critical infrastructure will want to purchase this book as a reference. Professionals, Researchers, Academics and students working in security general and Security of Critical Infrastructure, Privacy, and Data Sharing will also want to purchase this book as a reference.

Text Mining of Web-Based Medical Content (Hardcover): Amy Neustein Text Mining of Web-Based Medical Content (Hardcover)
Amy Neustein; Contributions by Johan Bellika, Angel Bravo-Salgado, Marius Brezovan, Dumitru Dan Burdescu, …
R2,410 Discovery Miles 24 100 Ships in 10 - 15 working days

* Includes Text Mining and Natural Language Processing Methods for extracting information from electronic health records and biomedical literature. * Analyzes text analytic tools for new media such as online forums, social media posts, tweets and video sharing. * Demonstrates how to use speech and audio technologies for improving access to online content for the visually impaired. Text Mining of Web-Based Medical Content examines various approaches to deriving high quality information from online biomedical literature, electronic health records, query search terms, social media posts and tweets. Using some of the latest empirical methods of knowledge extraction, the authors show how online content, generated by both professionals and laypersons, can be mined for valuable information about disease processes, adverse drug reactions not captured during clinical trials, and tropical fever outbreaks. Additionally, the authors show how to perform infromation extraction on a hospital intranet, how to build a social media search engine to glean information about patients' own experiences interacting with healthcare professionals, and how to improve access to online health information. This volume provides a wealth of timely material for health informatic professionals and machine learning, data mining, and natural language researchers. Topics in this book include: * Mining Biomedical Literature and Clinical Narratives * Medication Information Extraction * Machine Learning Techniques for Mining Medical Search Queries * Detecting the Level of Personal Health Information Revealed in Social Media * Curating Layperson's Personal Experiences with Health Care from Social Media and Twitter * Health Dialogue Systems for Improving Access to Online Content * Crowd-based Audio Clips to Improve Online Video Access for the Visually Impaired * Semantic-based Visual Information Retrieval for Mining Radiographic Image Data * Evaluating the Importance of Medical Terminology in YouTube Video Titles and Descriptions

Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1 (Hardcover, 1st ed. 2020): Balint Nemeth Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1 (Hardcover, 1st ed. 2020)
Balint Nemeth
R4,994 Discovery Miles 49 940 Ships in 10 - 15 working days

High voltage engineering is extremely important for the reliable design, safe manufacture and operation of electric devices, equipment and electric power systems. The 21st International Symposium on High Voltage Engineering, organized by the 90 years old Budapest School of High Voltage Engineering, provides an excellent forum to present results, advances and discussions among engineers, researchers and scientists, and share ideas, knowledge and expertise on high voltage engineering. The proceedings of the conference presents the state of the art technology of the field. The content is simultaneously aiming to help practicing engineers to be able to implement based on the papers and researchers to link and further develop ideas.

Advanced Experimental Methods for Noise Research in Nanoscale Electronic Devices (Hardcover, 2004 ed.): Josef Sikula, Michael... Advanced Experimental Methods for Noise Research in Nanoscale Electronic Devices (Hardcover, 2004 ed.)
Josef Sikula, Michael Levinshtein
R7,834 Discovery Miles 78 340 Ships in 18 - 22 working days

A discussion of recently developed experimental methods for noise research in nanoscale electronic devices, conducted by specialists in transport and stochastic phenomena in nanoscale physics. The approach described is to create methods for experimental observations of noise sources, their localization and their frequency spectrum, voltage-current and thermal dependences. Our current knowledge of measurement methods for mesoscopic devices is summarized to identify directions for future research, related to downscaling effects.

The directions for future research into fluctuation phenomena in quantum dot and quantum wire devices are specified. Nanoscale electronic devices will be the basic components for electronics of the 21st century. From this point of view the signal-to-noise ratio is a very important parameter for the device application. Since the noise is also a quality and reliability indicator, experimental methods will have a wide application in the future.

Metal-to-Nonmetal Transitions (Hardcover, 2010 Ed.): Ronald Redmer, Friedrich Hensel, Bastian Holst Metal-to-Nonmetal Transitions (Hardcover, 2010 Ed.)
Ronald Redmer, Friedrich Hensel, Bastian Holst
R2,664 Discovery Miles 26 640 Ships in 18 - 22 working days

This book is devoted to nonmetal-to-metal transitions. The original ideas of Mott for such a transition in solids have been adapted to describe a broad variety of phenomena in condensed matter physics (solids, liquids, and fluids), in plasma and cluster physics, as well as in nuclear physics (nuclear matter and quark-gluon systems). The book gives a comprehensive overview of theoretical methods and experimental results of the current research on the Mott effect for this wide spectrum of topics. The fundamental problem is the transition from localized to delocalized states which describes the nonmetal-to-metal transition in these diverse systems. Based on the ideas of Mott, Hubbard, Anderson as well as Landau and Zeldovich, internationally respected scientists present the scientific challenges and highlight the enormous progress which has been achieved over the last years. The level of description is aimed to specialists in these fields as well as to young scientists who will get an overview for their own work. A common feature of all contribution is the extensive discussion of bound states," i.e. their formation and dissolution due to medium effects. This applies to atoms and molecules in plasmas, fluids, and small clusters, excitons in semiconductors, or nucleons, deuterons, and alpha-particles in nuclear matter. In this way, the transition from delocalized to localized states and vice versa can be described on a common level."

Robotic Cell Manipulation (Paperback): Dong Sun Robotic Cell Manipulation (Paperback)
Dong Sun
R3,335 Discovery Miles 33 350 Ships in 10 - 15 working days

Robotic Cell Manipulation introduces up-to-date research to realize this new theme of medical robotics. The book is organized in three levels: operation tools (e.g., optical tweezers, microneedles, dielectrophoresis, electromagnetic devices, and microfluidic chips), manipulation types (e.g., microinjection, transportation, rotation fusion, adhesion, separation, etc.), and potential medical applications (e.g., micro-surgery, biopsy, gene editing, cancer treatment, cell-cell interactions, etc.). The technology involves different fields such as robotics, automation, imaging, microfluidics, mechanics, materials, biology and medical sciences. The book provides systematic knowledge on the subject, covering a wide range of basic concepts, theories, methodology, experiments, case studies and potential medical applications. It will enable readers to promptly conduct a systematic review of research and become an essential reference for many new and experienced researchers entering this unique field.

The Wireless Tesla (Hardcover): Nikola Tesla The Wireless Tesla (Hardcover)
Nikola Tesla
R449 Discovery Miles 4 490 Ships in 10 - 15 working days
Electrical Age [microform]; v.38 (Hardcover): Anonymous Electrical Age [microform]; v.38 (Hardcover)
Anonymous
R1,018 Discovery Miles 10 180 Ships in 10 - 15 working days
Learning and Generalisation - With Applications to Neural Networks (Hardcover, 2nd ed. 2002): Mathukumalli Vidyasagar Learning and Generalisation - With Applications to Neural Networks (Hardcover, 2nd ed. 2002)
Mathukumalli Vidyasagar
R4,963 Discovery Miles 49 630 Ships in 18 - 22 working days

Learning and Generalization provides a formal mathematical theory for addressing intuitive questions of the type: * How does a machine learn a new concept on the basis of examples? * How can a neural network, after sufficient training, correctly predict the outcome of a previously unseen input? * How much training is required to achieve a specified level of accuracy in the prediction? * How can one identify the dynamical behaviour of a nonlinear control system by observing its input-output behaviour over a finite interval of time? The first edition, A Theory of Learning and Generalization, was the first book to treat the problem of machine learning in conjunction with the theory of empirical process, the latter being a well-established branch of probability theory. The treatment of both topics side-by-side leads to new insights, as well as new results in both topics. The second edition extends and improves upon this material, covering new areas including: * Support vector machines (SVM's) * Fat-shattering dimensions and applications to neural network learning * Learning with dependent samples generated by a beta-mixing process * Connections between system identification and learning theory * Probabilistic solution of 'intractable problems' in robust control and matrix theory using randomized algorithms It also contains solutions to some of the open problems posed in the first edition, while adding new open problems. This book is essential reading for control and system theorists, neural network researchers, theoretical computer scientists and probabilists The Communications and Control Engineering series reflects the major technological advances which have a great impact in the fields of communication and control. It reports on the research in industrial and academic institutions around the world to exploit the new possibilities which are becoming available

My Inventions - The Autobiography of Nikola Tesla (Hardcover): Nikola Tesla My Inventions - The Autobiography of Nikola Tesla (Hardcover)
Nikola Tesla
R618 Discovery Miles 6 180 Ships in 10 - 15 working days
Electric Fuses - Fundamentals and new applications (Hardcover, 4th edition): Nigel Nurse, Arthur Wright, P. Gordon Newbery Electric Fuses - Fundamentals and new applications (Hardcover, 4th edition)
Nigel Nurse, Arthur Wright, P. Gordon Newbery
R3,111 R2,813 Discovery Miles 28 130 Save R298 (10%) Ships in 18 - 22 working days

Fuses are designed to operate when over-currents, large and small, occur within electrical equipment; they thus interrupt the flow of current, preventing damage. They are needed for various power electric systems, for stationary and automotive applications, as well as power grid components like PV systems and distribution lines. Different types of equipment and voltages require special fuses, and their behaviour must be understood to guarantee correct choice and safe operation. For the 3rd edition in 2004, Wright and Newbery's classic had been revised to include pre-arcing and arcing behaviour, retrofitting of fuses, chip and automotive fuses, and insulated gate bipolar transistor (IGBT) protection. Edition 4 includes updates on standards and new applications. Data, standards descriptions and many illustrations have been revised and updated. Chapters cover pre-arcing and arcing behaviour of cartridge fuselinks, constructions and types of low-and high-voltage fuses as well as miniature, plug and other small fuses, various applications, standards, manufacture, quality assurance and inspection. This reference is indispensable for researchers involved with power electric equipment, grids and motors, and experts engaged in fuse development, design and production.

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