Author: John Compton Mosher
Publisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
Localization from Near-source Quasi-static Electromagnetic Fields
Author: John Compton Mosher
Publisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
Localization from Near-source Quasi-static Electromagnetic Fields
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
Book Description
A wide range of research has been published on the problem of estimating the parameters of electromagnetic and acoustical sources from measurements of signals measured at an array of sensors. In the quasi-static electromagnetic cases examined here, the signal variation from a point source is relatively slow with respect to the signal propagation and the spacing of the array of sensors. As such, the location of the point sources can only be determined from the spatial diversity of the received signal across the array. The inverse source localization problem is complicated by unknown model order and strong local minima. The nonlinear optimization problem is posed for solving for the parameters of the quasi-static source model. The transient nature of the sources can be exploited to allow subspace approaches to separate out the signal portion of the spatial correlation matrix. Decomposition techniques are examined for improved processing, and an adaptation of MUtiple SIgnal Characterization (MUSIC) is presented for solving the source localization problem. Recent results on calculating the Cramer-Rao error lower bounds are extended to the multidimensional problem here. This thesis focuses on the problem of source localization in magnetoencephalography (MEG), with a secondary application to thunderstorm source localization. Comparisons are also made between MEG and its electrical equivalent, electroencephalography (EEG). The error lower bounds are examined in detail for several MEG and EEG configurations, as well as localizing thunderstorm cells over Cape Canaveral and Kennedy Space Center. Time-eigenspectrum is introduced as a parsing technique for improving the performance of the optimization problem.
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
Book Description
A wide range of research has been published on the problem of estimating the parameters of electromagnetic and acoustical sources from measurements of signals measured at an array of sensors. In the quasi-static electromagnetic cases examined here, the signal variation from a point source is relatively slow with respect to the signal propagation and the spacing of the array of sensors. As such, the location of the point sources can only be determined from the spatial diversity of the received signal across the array. The inverse source localization problem is complicated by unknown model order and strong local minima. The nonlinear optimization problem is posed for solving for the parameters of the quasi-static source model. The transient nature of the sources can be exploited to allow subspace approaches to separate out the signal portion of the spatial correlation matrix. Decomposition techniques are examined for improved processing, and an adaptation of MUtiple SIgnal Characterization (MUSIC) is presented for solving the source localization problem. Recent results on calculating the Cramer-Rao error lower bounds are extended to the multidimensional problem here. This thesis focuses on the problem of source localization in magnetoencephalography (MEG), with a secondary application to thunderstorm source localization. Comparisons are also made between MEG and its electrical equivalent, electroencephalography (EEG). The error lower bounds are examined in detail for several MEG and EEG configurations, as well as localizing thunderstorm cells over Cape Canaveral and Kennedy Space Center. Time-eigenspectrum is introduced as a parsing technique for improving the performance of the optimization problem.
Quasi-static Electromagnetic Fields
Author: Peter R. Bannister
Publisher:
ISBN:
Category : Electromagnetic fields
Languages : en
Pages : 580
Book Description
Publisher:
ISBN:
Category : Electromagnetic fields
Languages : en
Pages : 580
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 804
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 804
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 906
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 906
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Advances in Electromagnetic Fields in Living Systems
Author: James C. Lin
Publisher: Springer Science & Business Media
ISBN: 1461542030
Category : Medical
Languages : en
Pages : 311
Book Description
This is the third volume in the series, in which the topic of the effects of radio frequencies on human tissue, now increasingly a concern with the prevalence of cell phones, is explored by Prof. Lin and other researchers. The impact of electromagnetics on imaging and cardiology, both very keen areas of research at present, is also explored.
Publisher: Springer Science & Business Media
ISBN: 1461542030
Category : Medical
Languages : en
Pages : 311
Book Description
This is the third volume in the series, in which the topic of the effects of radio frequencies on human tissue, now increasingly a concern with the prevalence of cell phones, is explored by Prof. Lin and other researchers. The impact of electromagnetics on imaging and cardiology, both very keen areas of research at present, is also explored.
An Integrative Guide to Consumer Neuroscience
Author: Sven Braeutigam
Publisher: Oxford University Press
ISBN: 019250729X
Category : Psychology
Languages : en
Pages : 304
Book Description
Consumer neuroscience is a complex, interdisciplinary, and emerging field that cuts across psychology, neuroscience, and consumer research. The book provides a comprehensive overview of the foundations and applications of modern consumer neuroscience, exploring a wide range of established and emergent topics in the field, making it the ideal resource for anyone looking to broaden their knowledge base. The content provides a thorough, high-level guide to the mathematical, technological, and theoretical aspects of consumer neuroscience, alongside a wide range of specific applications situated within a scientific context. The book includes chapters on cognitive processes and behaviors, the human brain, mathematical concepts, and neuroscience technologies. It considers the difference of individual, social and commercial neuroscience through the lens of gender differences, aging and ethics, amongst other concepts, enabling the reader to adopt an holistic view of the field and discover new research directions. This is enhanced by the inclusion of consolidating questions and answers for each chapter alongside numerous images to enhance the reader's understanding of the topic. The book is an essential read for the aspiring researcher or practitioner striving for an in-depth understanding of the field and its ramifications.
Publisher: Oxford University Press
ISBN: 019250729X
Category : Psychology
Languages : en
Pages : 304
Book Description
Consumer neuroscience is a complex, interdisciplinary, and emerging field that cuts across psychology, neuroscience, and consumer research. The book provides a comprehensive overview of the foundations and applications of modern consumer neuroscience, exploring a wide range of established and emergent topics in the field, making it the ideal resource for anyone looking to broaden their knowledge base. The content provides a thorough, high-level guide to the mathematical, technological, and theoretical aspects of consumer neuroscience, alongside a wide range of specific applications situated within a scientific context. The book includes chapters on cognitive processes and behaviors, the human brain, mathematical concepts, and neuroscience technologies. It considers the difference of individual, social and commercial neuroscience through the lens of gender differences, aging and ethics, amongst other concepts, enabling the reader to adopt an holistic view of the field and discover new research directions. This is enhanced by the inclusion of consolidating questions and answers for each chapter alongside numerous images to enhance the reader's understanding of the topic. The book is an essential read for the aspiring researcher or practitioner striving for an in-depth understanding of the field and its ramifications.
Dynamics of Internal Gravity Waves in the Ocean
Author: Yu.Z. Miropol'sky
Publisher: Springer Science & Business Media
ISBN: 9780792369356
Category : Science
Languages : en
Pages : 750
Book Description
This monograph creates a systematic interpretation of the theoretical and the most actual experimental aspects of the internal wave dynamics in the ocean. Firstly, it draws attention to the important physical effects from an oceanographical point of view which are presented in mathematical descriptions. Secondly, the book serves as an introduction to the range of modern ideas and the methods in the study of wave processes in dispersive media. The book is meant for specialists in physics of the ocean, oceanography, geophysics, hydroacoustics.
Publisher: Springer Science & Business Media
ISBN: 9780792369356
Category : Science
Languages : en
Pages : 750
Book Description
This monograph creates a systematic interpretation of the theoretical and the most actual experimental aspects of the internal wave dynamics in the ocean. Firstly, it draws attention to the important physical effects from an oceanographical point of view which are presented in mathematical descriptions. Secondly, the book serves as an introduction to the range of modern ideas and the methods in the study of wave processes in dispersive media. The book is meant for specialists in physics of the ocean, oceanography, geophysics, hydroacoustics.
Biomagnetic Localization from Transient Quasi-static Events
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
Sensory stimuli, such as auditory, visual, or somatosensory, evoke neural responses in very localized regions of the brain. A SQUID biomagnetometer can measure the very weak fields that are generated outside of the head by this response. A simple source and head model of current dipoles inside a conducting sphere is typically used to interpret these magnetic field measurements or magnetoencephalogram (MEG). Locating dipole sources using data recorded from an array of biomagnetic sensors is distinguished from conventional array source localization techniques by the quasi-static transient nature of the data. Here, the basic MEG model is reviewed, then a localization example is given to motivate the need for partitioning the data to improve estimator performance. Tune-eigenspectrum analysis is introduced as a means of partitioning and interpreting spatio-temporal biomagnetic data. Examples using both simulated and somatosensory data are presented.
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
Sensory stimuli, such as auditory, visual, or somatosensory, evoke neural responses in very localized regions of the brain. A SQUID biomagnetometer can measure the very weak fields that are generated outside of the head by this response. A simple source and head model of current dipoles inside a conducting sphere is typically used to interpret these magnetic field measurements or magnetoencephalogram (MEG). Locating dipole sources using data recorded from an array of biomagnetic sensors is distinguished from conventional array source localization techniques by the quasi-static transient nature of the data. Here, the basic MEG model is reviewed, then a localization example is given to motivate the need for partitioning the data to improve estimator performance. Tune-eigenspectrum analysis is introduced as a means of partitioning and interpreting spatio-temporal biomagnetic data. Examples using both simulated and somatosensory data are presented.
Biomedical Technology and Devices Handbook
Author: George Zouridakis
Publisher: CRC Press
ISBN: 1439870713
Category : Medical
Languages : en
Pages : 838
Book Description
Concise yet comprehensive, the Biomedical Technology and Devices Handbook illuminates the equipment, devices, and techniques used in modern medicine to diagnose, treat, and monitor human illnesses. With topics ranging from the basic procedures like blood pressure measurement to cutting-edge imaging equipment, biological tests, and genetic engineeri
Publisher: CRC Press
ISBN: 1439870713
Category : Medical
Languages : en
Pages : 838
Book Description
Concise yet comprehensive, the Biomedical Technology and Devices Handbook illuminates the equipment, devices, and techniques used in modern medicine to diagnose, treat, and monitor human illnesses. With topics ranging from the basic procedures like blood pressure measurement to cutting-edge imaging equipment, biological tests, and genetic engineeri