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Computational Geo-Electromagnetics

Computational Geo-Electromagnetics
Methods, Models, and Forecasts

by Viacheslav V. Spichak

  • Publisher : Elsevier
  • Release : 2020-02-01
  • Pages : 462
  • ISBN : 0128208201
  • Language : En, Es, Fr & De
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Computational Geo-Electromagnetics: Methods, Models, and Forecasts, Volume Five in the Computational Geophysics series, is devoted to techniques for building of geoelectrical models from electromagnetic data, featuring Bayesian statistical analysis and neural network algorithms. These models are applied to studying the geoelectrical structure of famous volcanoes (i.e., Vesuvio, Kilauea, Elbrus, Komagatake, Hengill) and geothermal zones (i.e., Travale, Italy; Soultz-sous-Forets, Elsace). Methodological recommendations are given on electromagnetic sounding of faults as well as geothermal and hydrocarbon reservoirs. Techniques for forecasting of petrophysical properties from the electrical resistivity as proxy parameter are also considered. Computational Geo-Electromagnetics: Methods, Models, and Forecasts offers techniques and algorithms for building geoelectrical models under conditions of rare or irregularly distributed EM data and/or lack of prior geological and geophysical information. This volume also includes methodological guidelines on interpretation of electromagnetic sounding data depending on goals of the study. Finally, it details computational algorithms for using electrical resistivity for properties beyond boreholes. Provides algorithms for inversion of incomplete, rare or irregularly distributed EM data Features methodological issues of building geoelectrical models Offers techniques for retrieving petrophysical properties from EM sounding data and well logs

Geometry Optimization and Computational Electromagnetics

Geometry Optimization and Computational Electromagnetics
Methods and Applications

by Raymond A. Wildman

  • Publisher : ProQuest
  • Release : 2008
  • Pages : 129
  • ISBN : 9780549388876
  • Language : En, Es, Fr & De
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A new geometry optimization scheme, based on computational geometry methods, is developed and applied to electromagnetic problems. Geometry optimization is an important problem and has applications in inverse scattering and electromagnetic device design. The basic method uses a novel geometric representation that can represent any topology and is also amenable to stochastic optimization methods. Though only developed here for two-dimensional problems, the method can be extended to three dimensions without altering any of its useful properties. As motivation, a phononic bandgap design problem is first developed and attempted using a pixel filling approach. Though decent results are achieved, the possible solutions are inherently limited by the geometric representation. The new method is then introduced and applied to the inverse scattering of conducting cylinders. Subsequently, homogeneous and inhomogeneous dielectric inverse scattering problems are solved and the efficiency of the method is addressed using local search methods. Finally, several advances in electromagnetic solvers, specifically time domain Nyström methods, are reported. These methods offer advantages over other competing methods and could be used with different geometry design problems.

Computational Electromagnetism

Computational Electromagnetism
Variational Formulations, Complementarity, Edge Elements

by Alain Bossavit

  • Publisher : Academic Press
  • Release : 1998-02-04
  • Pages : 352
  • ISBN : 9780080529660
  • Language : En, Es, Fr & De
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Computational Electromagnetism refers to the modern concept of computer-aided analysis, and design, of virtually all electric devices such as motors, machines, transformers, etc., as well as of the equipment inthe currently booming field of telecommunications, such as antennas, radars, etc. The present book is uniquely written to enable the reader-- be it a student, a scientist, or a practitioner-- to successfully perform important simulation techniques and to design efficient computer software for electromagnetic device analysis. Numerous illustrations, solved exercises, original ideas, and an extensive and up-to-date bibliography make it a valuable reference for both experts and beginners in the field. A researcher and practitioner will find in it information rarely available in other sources, such as on symmetry, bilateral error bounds by complimentarity, edge and face elements, treatment of infinite domains, etc. At the same time, the book is a useful teaching tool for courses in computational techniques in certain fields of physics and electrical engineering. As a self-contained text, it presents an extensive coverage of the most important concepts from Maxwells equations to computer-solvable algebraic systems-- for both static, quasi-static, and harmonic high-frequency problems. Benefits To the Engineer A sound background necessary not only to understand the principles behind variational methods and finite elements, but also to design pertinent and well-structured software. To the Specialist in Numerical Modeling The book offers new perspectives of practical importance on classical issues: the underlying symmetry of Maxwell equations, their interaction with other fields of physics in real-life modeling, the benefits of edge and face elements, approaches to error analysis, and "complementarity." To the Teacher An expository strategy that will allow you to guide the student along a safe and easy route through otherwise difficult concepts: weak formulations and their relation to fundamental conservation principles of physics, functional spaces, Hilbert spaces, approximation principles, finite elements, and algorithms for solving linear systems. At a higher level, the book provides a concise and self-contained introduction to edge elements and their application to mathematical modeling of the basic electromagnetic phenomena, and static problems, such as eddy-current problems and microwaves in cavities. To the Student Solved exercises, with "hint" and "full solution" sections, will both test and enhance the understanding of the material. Numerous illustrations will help in grasping difficult mathematical concepts.

Computational Electromagnetics and Its Applications

Computational Electromagnetics and Its Applications
A Book

by Thomas G. Campbell,Roy A. Nicolaides,Manuel D. Salas

  • Publisher : Springer Science & Business Media
  • Release : 2012-12-06
  • Pages : 320
  • ISBN : 9401155844
  • Language : En, Es, Fr & De
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This volume contains the proceedings of the first ICASE/LaRC Work shop on Computational Electromagnetics and Its Applications conducted by the Institute for Computer Applications in Science and Engineering and NASA Langley Research Center. We had several goals in mind when we decided, jointly with the Elec tromagnetics Research Branch, to organize this workshop on Computa tional Electromagnetics ( CEM). Among our goals were a desire to obtain an overview of the current state of CEM, covering both algorithms and ap plications and their effect on NASA's activities in this area. In addition, we wanted to provide an attractive setting for computational scientists with expertise in other fields, especially computational fluid dynamics (CFD), to observe the algorithms and tools of CEM at work. Our expectation was that scientists from both fields would discover mutually beneficial inter connections and relationships. Another goal was to learn of progress in solution algorithms for electromagnetic optimization and design problems; such problems make extensive use of field solvers and computational effi ciency is at a premium. To achieve these goals we assembled the renowned group of speakers from academia and industry whose talks are contained in this volume. The papers are printed in the same order in which the talks were pre sented at the meeting. The first paper is an overview of work currently being performed in the Electromagnetic Research Branch at the Langley Research Center.

Computational Methods in Geophysical Electromagnetics

Computational Methods in Geophysical Electromagnetics

by Eldad Haber

  • Publisher : SIAM
  • Release : 2014-12-11
  • Pages : 144
  • ISBN : 1611973805
  • Language : En, Es, Fr & De
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This monograph provides a framework for students and practitioners who are working on the solution of electromagnetic imaging in geophysics. Bridging the gap between theory and practical applied material (for example, inverse and forward problems), it provides a simple explanation of finite volume discretization, basic concepts in solving inverse problems through optimization, a summary of applied electromagnetics methods, and MATLAB?÷code for efficient computation.

Computational Electromagnetics

Computational Electromagnetics
A Book

by Thomas Rylander,Pär Ingelström,Anders Bondeson

  • Publisher : Springer Science & Business Media
  • Release : 2012-11-06
  • Pages : 288
  • ISBN : 1461453518
  • Language : En, Es, Fr & De
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Computational Electromagnetics is a young and growing discipline, expanding as a result of the steadily increasing demand for software for the design and analysis of electrical devices. This book introduces three of the most popular numerical methods for simulating electromagnetic fields: the finite difference method, the finite element method and the method of moments. In particular it focuses on how these methods are used to obtain valid approximations to the solutions of Maxwell's equations, using, for example, "staggered grids" and "edge elements." The main goal of the book is to make the reader aware of different sources of errors in numerical computations, and also to provide the tools for assessing the accuracy of numerical methods and their solutions. To reach this goal, convergence analysis, extrapolation, von Neumann stability analysis, and dispersion analysis are introduced and used frequently throughout the book. Another major goal of the book is to provide students with enough practical understanding of the methods so they are able to write simple programs on their own. To achieve this, the book contains several MATLAB programs and detailed description of practical issues such as assembly of finite element matrices and handling of unstructured meshes. Finally, the book aims at making the students well-aware of the strengths and weaknesses of the different methods, so they can decide which method is best for each problem. In this second edition, extensive computer projects are added as well as new material throughout. Reviews of previous edition: "The well-written monograph is devoted to students at the undergraduate level, but is also useful for practising engineers." (Zentralblatt MATH, 2007)

Analytical and Computational Methods in Electromagnetics

Analytical and Computational Methods in Electromagnetics
A Book

by Ramesh Garg

  • Publisher : Artech House
  • Release : 2008
  • Pages : 528
  • ISBN : 1596933860
  • Language : En, Es, Fr & De
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Achieve optimal microwave system performance by mastering the principles and methods underlying today's powerful computational tools and commercial software in electromagnetics. This authoritative resource offers you clear and complete explanation of this essential electromagnetics knowledge, providing you with the analytical background you need to understand such key approaches as MoM (method of moments), FDTD (Finite Difference Time Domain) and FEM (Finite Element Method), and Green's functions. This comprehensive book includes all math necessary to master the material. Moreover, it features numerous solved problems that help ensure your understanding of key concepts throughout the book.

Computational Methods for Electromagnetics

Computational Methods for Electromagnetics
A Book

by Andrew F. Peterson,Scott L. Ray,Raj Mittra

  • Publisher : Wiley-IEEE Press
  • Release : 1998
  • Pages : 564
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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"'Computational Methods for Electromagnetics' is an indispensable resource for making efficient and accurate formulations for electromagnetics applications and their numerical treatment. Employing a unified coherent approach that is unmatched in the field, the authors detail both integral and differential equations using the method of moments and finite-element procedures. In addition, readers will gain a thorough understanding of numerical solution procedures. Detail is provided to enable the reader to implement concepts in software and, in addition, a collection of related computer programs are available via the Internet. 'Computational Methods for Electromagnetics' is designed for graduate-level classroom use or self-study, and every chapter includes problems. It will also be of particular interest to engineers working in the aerospace, defense, telecommunications, wireless, electromagnetic compatibility, and electronic packaging industries." -- Amazon.com.

Computational Electromagnetics

Computational Electromagnetics
Recent Advances and Engineering Applications

by Raj Mittra

  • Publisher : Springer Science & Business Media
  • Release : 2013-08-20
  • Pages : 704
  • ISBN : 1461443822
  • Language : En, Es, Fr & De
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Emerging Topics in Computational Electromagnetics in Computational Electromagnetics presents advances in Computational Electromagnetics. This book is designed to fill the existing gap in current CEM literature that only cover the conventional numerical techniques for solving traditional EM problems. The book examines new algorithms, and applications of these algorithms for solving problems of current interest that are not readily amenable to efficient treatment by using the existing techniques. The authors discuss solution techniques for problems arising in nanotechnology, bioEM, metamaterials, as well as multiscale problems. They present techniques that utilize recent advances in computer technology, such as parallel architectures, and the increasing need to solve large and complex problems in a time efficient manner by using highly scalable algorithms.

Time Domain Techniques in Computational Electromagnetics

Time Domain Techniques in Computational Electromagnetics
A Book

by Dragan Poljak

  • Publisher : Wit Pr/Computational Mechanics
  • Release : 2004
  • Pages : 172
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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A state-of-the-art review from invited contributors. Subjects covered include: time domain analysis of electromagnetic wave fields by boundary; integral equation method; and transient analysis of thin wires and related time domain energy measures.

Computational Electromagnetics and Supercomputer Architecture

Computational Electromagnetics and Supercomputer Architecture
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1993
  • Pages : 353
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Computational Science - ICCS 2021

Computational Science - ICCS 2021
21st International Conference, Krakow, Poland, June 16-18, 2021, Proceedings, Part IV

by Maciej Paszynski,Dieter Kranzlmüller,Valeria V. Krzhizhanovskaya,J. J. Dongarra,Peter Sloot

  • Publisher : Springer Nature
  • Release : 2021
  • Pages : 656
  • ISBN : 303077970X
  • Language : En, Es, Fr & De
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The six-volume set LNCS 12742, 12743, 12744, 12745, 12746, and 12747 constitutes the proceedings of the 21st International Conference on Computational Science, ICCS 2021, held in Krakow, Poland, in June 2021.* The total of 260 full papers and 57 short papers presented in this book set were carefully reviewed and selected from 635 submissions. 48 full and 14 short papers were accepted to the main track from 156 submissions; 212 full and 43 short papers were accepted to the workshops/ thematic tracks from 479 submissions. The papers were organized in topical sections named: Part I: ICCS Main Track Part II: Advances in High-Performance Computational Earth Sciences: Applications and Frameworks; Applications of Computational Methods in Artificial Intelligence and Machine Learning; Artificial Intelligence and High-Performance Computing for Advanced Simulations; Biomedical and Bioinformatics Challenges for Computer Science Part III: Classifier Learning from Difficult Data; Computational Analysis of Complex Social Systems; Computational Collective Intelligence; Computational Health Part IV: Computational Methods for Emerging Problems in (dis-)Information Analysis; Computational Methods in Smart Agriculture; Computational Optimization, Modelling and Simulation; Computational Science in IoT and Smart Systems Part V: Computer Graphics, Image Processing and Artificial Intelligence; Data-Driven Computational Sciences; Machine Learning and Data Assimilation for Dynamical Systems; MeshFree Methods and Radial Basis Functions in Computational Sciences; Multiscale Modelling and Simulation Part VI: Quantum Computing Workshop; Simulations of Flow and Transport: Modeling, Algorithms and Computation; Smart Systems: Bringing Together Computer Vision, Sensor Networks and Machine Learning; Software Engineering for Computational Science; Solving Problems with Uncertainty; Teaching Computational Science; Uncertainty Quantification for Computational Models *The conference was held virtually. Chapter “Intelligent Planning of Logistic Networks to Counteract Uncertainty Propagation” is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

New Trends in Computational Electromagnetics

New Trends in Computational Electromagnetics
A Book

by Ozgur Ergul

  • Publisher : SciTech Publishing
  • Release : 2020-01-17
  • Pages : 708
  • ISBN : 1785615483
  • Language : En, Es, Fr & De
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The authors present a broad overview of the recent efforts in computational electromagnetics to develop and implement more robust, accurate and efficient algorithms. With the recent improvement in available computing power, this is a timely overview of a rapidly developing subject.

Advances in Computation and Intelligence

Advances in Computation and Intelligence
5th International Symposium, ISICA 2010, Wuhan, China, October 22-24, 2010, Proceedings

by Jingnan Liu,Zhihua Cai,Chengyu Hu,Zhuo Kang,Yong Liu

  • Publisher : Springer Science & Business Media
  • Release : 2010-10-06
  • Pages : 536
  • ISBN : 3642164927
  • Language : En, Es, Fr & De
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LNCS 6382 is the ?rst volume of the proceedings of the Fifth International Symposium on Intelligence Computation and Applications (ISICA 2010)held in Wuhan, China, October 22–24, 2010. Fifty-three papers among 267 submissions were selected and included in LNCS 6382. The symposium featured the most up-to-date research in ant colony and particle swarm optimization, di?erential evolution, distributed computing, - netic algorithms, multi-agent systems, multi-objective and dynamic optimi- tion, robot intelligence, statistical learning, and system design. LNCS 6382 is dedicated to the memory of Lishan Kang. ISICA conferences were one of the ?rst series of international conferences on computational intel- gence that combine elements of learning, adaptation, evolution and fuzzy logic to create programs as alternative solutions to arti?cial intelligence. The idea for ISICA came about after Lishan Kang organized on international symposium on evolutionary computation at Wuhan University in 2000. After he was - vited to be the Director of the School of Computer Science, China University of Geosciences, he wondered whether he could establish such discussion forums on computational intelligence at China University of Geosciences. With support from his university, the School of Computer Science organizedthe ?rst ISICA in 2005, in which some of the leading ?gures from the scienti?c computing world were invited, including H. -P. Schwefel, Germany, M. Schoenauer, France, D. J. Evans, UK, T. Higuchi, Japan, Z. Michalewicz, Australia, and X. Yao, UK.

Advanced Computational Electromagnetic Methods

Advanced Computational Electromagnetic Methods

by Wenhua Yu,Wenxing Li,Atef Elsherbeni,Yahya Rahmat-Samii

  • Publisher : Artech House
  • Release : 2015-03-01
  • Pages : 600
  • ISBN : 1608078973
  • Language : En, Es, Fr & De
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This new resource covers the latest developments in computational electromagnetic methods, with emphasis on cutting-edge applications. This book is designed to extend existing literature to the latest development in computational electromagnetic methods, which are of interest to readers in both academic and industrial areas. The topics include advanced techniques in MoM, FEM and FDTD, spectral domain method, GPU and Phi hardware acceleration, metamaterials, frequency and time domain integral equations, and statistics methods in bio-electromagnetics.

Wave Propagation in Complex Media

Wave Propagation in Complex Media
A Book

by George Papanicolaou

  • Publisher : Springer Science & Business Media
  • Release : 2012-12-06
  • Pages : 295
  • ISBN : 1461216788
  • Language : En, Es, Fr & De
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This IMA Volume in Mathematics and its Applications WAVE PROPAGATION IN COMPLEX MEDIA is based on the proceedings of two workshops: • Wavelets, multigrid and other fast algorithms (multipole, FFT) and their use in wave propagation and • Waves in random and other complex media. Both workshops were integral parts of the 1994-1995 IMA program on "Waves and Scattering." We would like to thank Gregory Beylkin, Robert Burridge, Ingrid Daubechies, Leonid Pastur, and George Papanicolaou for their excellent work as organizers of these meetings. We also take this opportunity to thank the National Science Foun dation (NSF), the Army Research Office (ARO, and the Office of Naval Research (ONR), whose financial support made these workshops possible. A vner Friedman Robert Gulliver v PREFACE During the last few years the numerical techniques for the solution of elliptic problems, in potential theory for example, have been drastically improved. Several so-called fast methods have been developed which re duce the required computing time many orders of magnitude over that of classical algorithms. The new methods include multigrid, fast Fourier transforms, multi pole methods and wavelet techniques. Wavelets have re cently been developed into a very useful tool in signal processing, the solu tion of integral equation, etc. Wavelet techniques should be quite useful in many wave propagation problems, especially in inhomogeneous and nonlin ear media where special features of the solution such as singularities might be tracked efficiently.

Foundations of Geophysical Electromagnetic Theory and Methods

Foundations of Geophysical Electromagnetic Theory and Methods
A Book

by Michael S. Zhdanov

  • Publisher : Elsevier
  • Release : 2017-10-27
  • Pages : 804
  • ISBN : 0444638911
  • Language : En, Es, Fr & De
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Foundations of Geophysical Electromagnetic Theory and Methods, Second Edition, builds on the strength of the first edition to offer a systematic exposition of geophysical electromagnetic theory and methods. This new edition highlights progress made over the last decade, with a special focus on recent advances in marine and airborne electromagnetic methods. Also included are recent case histories on practical applications in tectonic studies, mineral exploration, environmental studies and off-shore hydrocarbon exploration. The book is ideal for geoscientists working in all areas of geophysics, including exploration geophysics and applied physics, as well as graduate students and researchers working in the field of electromagnetic theory and methods. Presents theoretical and methodological foundations of geophysical field theory Synthesizes fundamental theory and the most recent achievements of electromagnetic (EM) geophysical methods in the framework of a unified systematic exposition Offers a unique breadth and completeness in providing a general picture of the current state-of-the-art in EM geophysical technology Discusses practical aspects of EM exploration for mineral and energy resources

Computational Methods for Electromagnetic Phenomena

Computational Methods for Electromagnetic Phenomena
Electrostatics in Solvation, Scattering, and Electron Transport

by Wei Cai

  • Publisher : Cambridge University Press
  • Release : 2013-01-03
  • Pages : 129
  • ISBN : 1139619845
  • Language : En, Es, Fr & De
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A unique and comprehensive graduate text and reference on numerical methods for electromagnetic phenomena, from atomistic to continuum scales, in biology, optical-to-micro waves, photonics, nanoelectronics and plasmas. The state-of-the-art numerical methods described include: • Statistical fluctuation formulae for the dielectric constant • Particle-Mesh-Ewald, Fast-Multipole-Method and image-based reaction field method for long-range interactions • High-order singular/hypersingular (Nyström collocation/Galerkin) boundary and volume integral methods in layered media for Poisson–Boltzmann electrostatics, electromagnetic wave scattering and electron density waves in quantum dots • Absorbing and UPML boundary conditions • High-order hierarchical Nédélec edge elements • High-order discontinuous Galerkin (DG) and Yee finite difference time-domain methods • Finite element and plane wave frequency-domain methods for periodic structures • Generalized DG beam propagation method for optical waveguides • NEGF(Non-equilibrium Green's function) and Wigner kinetic methods for quantum transport • High-order WENO and Godunov and central schemes for hydrodynamic transport • Vlasov-Fokker-Planck and PIC and constrained MHD transport in plasmas

Computational Neural Networks for Geophysical Data Processing

Computational Neural Networks for Geophysical Data Processing
A Book

by M.M. Poulton

  • Publisher : Elsevier
  • Release : 2001-06-13
  • Pages : 352
  • ISBN : 9780080529653
  • Language : En, Es, Fr & De
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This book was primarily written for an audience that has heard about neural networks or has had some experience with the algorithms, but would like to gain a deeper understanding of the fundamental material. For those that already have a solid grasp of how to create a neural network application, this work can provide a wide range of examples of nuances in network design, data set design, testing strategy, and error analysis. Computational, rather than artificial, modifiers are used for neural networks in this book to make a distinction between networks that are implemented in hardware and those that are implemented in software. The term artificial neural network covers any implementation that is inorganic and is the most general term. Computational neural networks are only implemented in software but represent the vast majority of applications. While this book cannot provide a blue print for every conceivable geophysics application, it does outline a basic approach that has been used successfully.

Computational Electromagnetics

Computational Electromagnetics
Proceedings of the IMACS International Symposium on Computational Electromagnetics, Pittsburgh, PA, USA, 12-13 December, 1984

by Zoltan J. Cendes

  • Publisher : Elsevier Publishing Company
  • Release : 1986
  • Pages : 274
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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