Nonlinear Resonances And Some Of Their Applications To Information Processing

Author : Ibrahim Usama Bello
Publisher : Unknown
Page : 128 pages
File Size : 43,6 Mb
Release : 2021
Category : Electronic
ISBN : OCLC:1302993658

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Nonlinear Resonances and Some of Their Applications to Information Processing by Ibrahim Usama Bello Pdf

The study of resonance phenomena in nonlinear dynamical systems has drawn considerable attention for years. The most studied nonlinear resonance is undoubtedly the famous stochastic resonance, which consists of perturbing a nonlinear system with an appropriate amount of noise to enhance the detection of a subthreshold input signal. Since the introduction of stochastic resonance in the context of climate dynamics, it was later observed that a deterministic high frequency perturbation can replace noise leading to vibrational resonance. Even if this latter resonance was investigated in many areas of science for more than two decades now, it is still receiving attentions. It is the subject of this thesis, which numerically analyzes the occurrence of this phenomenon in two different nonlinear systems, and which suggests applications in the context of subthreshold images perception. First, we analyze the motion of a particle with a given mass which is submitted to a nonlinear force deriving from a double-well potential. For both considered cases of linear and nonlinear space-dependent damping, we establish that there exists a critical mass beyond which vibrational resonance ceases to exist. Next, we analyze how the nonlinearity affects vibrational resonance in the Chua's circuit model. Especially, we show that better resonances can be achieved when Chua's system experiences a truncated sinusoidal nonlinearity instead of the conventional sawtooth nonlinearity. Moreover, when the system driving consists of two close low frequencies, we observe that the high frequency perturbation can induce resonances at the two input low frequencies but also at a lower frequency via the mechanisms of vibrational resonance and ghost-vibrational resonance. Lastly, we consider the perception of subthreshold images through perturbed threshold detectors. In terms of image perception, we show that detectors which are based on vibrational resonance clearly outperform detectors based on stochastic resonance.

Author : Shanmuganathan Rajasekar,Miguel A. F. Sanjuan
Publisher : Springer
Page : 409 pages
File Size : 40,6 Mb
Release : 2015-11-30
Category : Science
ISBN : 9783319248868

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Nonlinear Resonances by Shanmuganathan Rajasekar,Miguel A. F. Sanjuan Pdf

This introductory text presents the basic aspects and most important features of various types of resonances and anti-resonances in dynamical systems. In particular, for each resonance, it covers the theoretical concepts, illustrates them with case studies, and reviews the available information on mechanisms, characterization, numerical simulations, experimental realizations, possible quantum analogues, applications and significant advances made over the years. Resonances are one of the most fundamental phenomena exhibited by nonlinear systems and refer to specific realizations of maximum response of a system due to the ability of that system to store and transfer energy received from an external forcing source. Resonances are of particular importance in physical, engineering and biological systems - they can prove to be advantageous in many applications, while leading to instability and even disasters in others. The book is self-contained, providing the details of mathematical derivations and techniques involved in numerical simulations. Though primarily intended for graduate students, it can also be considered a reference book for any researcher interested in the dynamics of resonant phenomena.

Author : V.G. Shavrov,V.I. Shcheglov
Publisher : CRC Press
Page : 576 pages
File Size : 51,5 Mb
Release : 2021-09-06
Category : Science
ISBN : 9781000441789

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Ferromagnetic Resonance in Orientational Transition Conditions by V.G. Shavrov,V.I. Shcheglov Pdf

The unique properties of ferromagnetic resonance (FMR) in magnetodielectric solids are widely used to create highly efficient analog information processing devices in the microwave range. Such devices include filters, delay lines, phase shifters, non-reciprocal and non-linear devices, and others. This book examines magnetic resonance and ferromagnetic resonance under a wide variety of conditions to study physical properties of magnetodielectric materials. The authors explore the properties in various mediums that significantly complicate magnetic resonance and provide a summary of related advances obtained during the last two decades. It also covers the emergence of new branches of the spectrum and anomalous dependencies on the magnetic field. Key Features: Reviews basic principles of the science of crystallographic symmetry and anisotropic solid-state properties Addresses the inhomogeneous nature of the distribution of the magnetization in the material being studied Explains the mathematic methods used in the calculation of anisotropic solids of a solid Provides the reader with a path to substitute electromagnetic waves when magnetostatic apparatus prove insufficient

Author : Anonim
Publisher : Unknown
Page : 994 pages
File Size : 46,5 Mb
Release : 1995
Category : Aeronautics
ISBN : UIUC:30112050127296

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : Kestutis Staliunas,V.J. Sánchez-Morcillo
Publisher : Springer
Page : 234 pages
File Size : 52,5 Mb
Release : 2003-07-03
Category : Science
ISBN : 9783540364160

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Transverse Patterns in Nonlinear Optical Resonators by Kestutis Staliunas,V.J. Sánchez-Morcillo Pdf

The growth of regularity from disorder, the evolution from the simple towards the complex, and the spontaneous formation of spatio temporal patterns in general are questions which intrigue everybody. This has been one of the hasic philosophical topics from ancient to modern times. Is nature able to create something fundamentally new by itself? If yes, how does this creation occurs? Or does nature only reproduce something which was already encoded in it, from the very beginning? This remained a topic exclusively for philoso phers until very recently, and it was only a few decades a. go that physicists started to convert this seemingly purely philosophical subject into a scientific discipline: a scientific discipline like other scientific disciplines, where one re lies on formulas and equations, on nunlerical simulations, and on laboratory experiments. This book is not about general questions related to pattern formation and self organization in nature. It is about spontaneous patterns in just one part of nature in nonlinear optical systems, and, more precisely, in nonlinear optical resonators. Nonlinear optical systems represent a small part of nature, hut a very representative part: one can observe here nearly all the known symmetries of patterns, one can generate nearly all known types of localized strlictlires and one can realize nearly all known spatial instabilities and spatial bifurcations.

Author : Zhong-Lin Lu,Lloyd Kaufman
Publisher : Psychology Press
Page : 475 pages
File Size : 54,6 Mb
Release : 2003-10-17
Category : Psychology
ISBN : 9781135625672

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Magnetic Source Imaging of the Human Brain by Zhong-Lin Lu,Lloyd Kaufman Pdf

This book is designed to acquaint serious students, scientists, and clinicians with magnetic source imaging (MSI)--a brain imaging technique of proven importance that promises even more important advances. The technique permits spatial resolution of neural events on a scale measured in millimeters and temporal resolution measured in milliseconds. Although widely mentioned in literature dealing with cognitive neuroscience and functional brain imaging, there is no single book describing both the foundations and actual methods of magnetoencephalopgraphy and its underlying science, neuromagnetism. This volume fills a long-standing need, as it is accessible to scientists and students having no special background in the field, and makes it possible for them to understand this literature and undertake their own research. A self-contained unit, this book covers MSI from beginning to end, including its relationship to allied technologies, such as electroencephalography and modern functional imaging modalities. In addition, the book: *introduces the field to the non-specialist, providing a framework for the rest of the book; *provides a thorough review of the physiological basis of MSI; *describes the mathematical bases of MSI--the forward and inverse problems; *outlines new signal processing methods that extract information from single-trial MEG; *depicts the early, as well as the most recent versions of MSI technology; *compares MSI with other imaging methodologies; *describes new paradigms and analysis techniques in applying MSI to study human perception and cognition, which are also applicable to EEG; and *reviews some of the most important results in MSI from the most prominent researchers and laboratories around the world.

Author : Matthias Scholz
Publisher : Logos Verlag Berlin GmbH
Page : 180 pages
File Size : 43,5 Mb
Release : 2009
Category : Science
ISBN : 9783832522209

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New Light Sources for Quantum Information Processing -- Single Photons from Single Quantum Dots and Cavity-Enhanced Parametric Down-Conversion by Matthias Scholz Pdf

The outstanding research efforts in quantum information processing over the past two decades reflect the promise this field of physics provides for practical applications in information science as well as for new approaches towards a better understanding of fundamental questions in quantum mechanics. This thesis focuses on the photon as a principal resource to perform quantum information tasks and on schemes to imprint quantum bits onto its various degrees of freedom. Its weak coupling to the environment makes the photon an ideal carrier to securely transmit information by quantum cryptographic protocols. Moreover, efficient implementations of quantum computing using solely linear optics have been proven. Unfortunately, scalability is not easily achieved by a purely photonic approach since the generation of indistinguishable single photons from multiple emitters remains a difficult task. Thus, proposals for more complex quantum networks suggest an architecture with single photons as information carriers between atomic ensembles that act as storage and processing nodes. Computations including a limited number of qubits, however, may be performed by the linear optics scheme. The thesis starts with the generation and characterization of single-photon states, using a source based on a single optically pumped quantum dot. The capability of these states to implement a quantum algorithm using linear optics and single-photon interference is experimentally demonstrated for the first time. Error correction makes the interferometric setup robust against phase-noise. After successful realization of this proof-of-principle experiment, attention is drawn to the need of plug-and-play single-photon sources. Especially quantum key distribution, the most advanced quantum information technology to date which has even found its way into commercial devices, requires compact and low-cost non-classical light sources.Therefore, a single-photon source based on electrically pumped quantum dots is presented that exhibits unmatched spectral purity and single-photon statistics. Results towards the realization of quantum networks are presented in the following chapters, covering the generation of narrow-band single photons which can efficiently couple to atomic resonances. Photons with a spectral width of less than 3 MHz are created by ultra-bright cavity-enhanced spontaneous parametric down-conversion, and their quantum statistics is studied in detail. A setup for time-bin encoding is demonstrated, capable of imprinting quantum information onto these narrow-band single photons. This thesis concludes with slow-light experiments in atomic ensembles as a model system for atom-photon interaction on the single-photon level. The described experiments demonstrate striking features that make the single photon one of the most remarkable physical systems for the field of quantum information.

Author : Oliver Brand,Isabelle Dufour,Stephen Heinrich,Fabien Josse
Publisher : John Wiley & Sons
Page : 512 pages
File Size : 52,8 Mb
Release : 2015-04-22
Category : Technology & Engineering
ISBN : 9783527676354

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Resonant MEMS by Oliver Brand,Isabelle Dufour,Stephen Heinrich,Fabien Josse Pdf

Part of the AMN book series, this book covers the principles, modeling and implementation as well as applications of resonant MEMS from a unified viewpoint. It starts out with the fundamental equations and phenomena that govern the behavior of resonant MEMS and then gives a detailed overview of their implementation in capacitive, piezoelectric, thermal and organic devices, complemented by chapters addressing the packaging of the devices and their stability. The last part of the book is devoted to the cutting-edge applications of resonant MEMS such as inertial, chemical and biosensors, fluid properties sensors, timing devices and energy harvesting systems.

Author : Lazaros S. Iliadis,Ilias Maglogiannis,Harris Papadopoulos
Publisher : Springer Science & Business Media
Page : 517 pages
File Size : 50,9 Mb
Release : 2011-09-08
Category : Computers
ISBN : 9783642239595

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Artificial Intelligence Applications and Innovations by Lazaros S. Iliadis,Ilias Maglogiannis,Harris Papadopoulos Pdf

The two-volume set IFIP AICT 363 and 364 constitutes the refereed proceedings of the 12th International Conference on Engineering Applications of Neural Networks, EANN 2011, and the 7th IFIP WG 12.5 International Conference, AIAI 2011, held jointly in Corfu, Greece, in September 2011. The 52 revised full papers and 28 revised short papers presented together with 31 workshop papers were carefully reviewed and selected from 150 submissions. The second volume includes the papers that were accepted for presentation at the AIAI 2011 conference. They are organized in topical sections on computer vision and robotics, classification/pattern recognition, financial and management applications of AI, fuzzy systems, learning and novel algorithms, recurrent and radial basis function ANN, machine learning, generic algorithms, data mining, reinforcement learning, Web applications of ANN, medical applications of ANN and ethics of AI, and environmental and earth applications of AI. The volume also contains the accepted papers from the First Workshop on Computational Intelligence in Software Engineering (CISE 2011) and the Workshop on Artificial Intelligence Applications in Biomedicine (AIAB 2011).

Author : Kevin K.W. Wong,B. Sumudu U. Mendis,Abdesselam Bouzerdoum
Publisher : Springer
Page : 740 pages
File Size : 45,6 Mb
Release : 2010-11-18
Category : Computers
ISBN : 9783642175374

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Neural Information Processing. Theory and Algorithms by Kevin K.W. Wong,B. Sumudu U. Mendis,Abdesselam Bouzerdoum Pdf

The two volume set LNCS 6443 and LNCS 6444 constitutes the proceedings of the 17th International Conference on Neural Information Processing, ICONIP 2010, held in Sydney, Australia, in November 2010. The 146 regular session papers presented were carefully reviewed and selected from 470 submissions. The papers of part I are organized in topical sections on neurodynamics, computational neuroscience and cognitive science, data and text processing, adaptive algorithms, bio-inspired algorithms, and hierarchical methods. The second volume is structured in topical sections on brain computer interface, kernel methods, computational advance in bioinformatics, self-organizing maps and their applications, machine learning applications to image analysis, and applications.

Author : Michael Jenkin,Laurence R. Harris
Publisher : OUP USA
Page : 464 pages
File Size : 53,9 Mb
Release : 2006
Category : Medical
ISBN : 9780195172881

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Seeing Spatial Form by Michael Jenkin,Laurence R. Harris Pdf

Accompanying CD-ROM contains ... "color imagery and video clips associated with various chapters and the York Vision Conference itself."--Page v.

Author : Stefano Trillo
Publisher : Springer Science & Business Media
Page : 492 pages
File Size : 49,9 Mb
Release : 2001-09-11
Category : Science
ISBN : 3540416536

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Spatial Solitons by Stefano Trillo Pdf

Soliton-based concepts open the road for newly designed laser sources, new frequency converters and high-intensity laser-material interactions. Optical solitons as stable spatial patterns of complex nonlinear systems allow for the control of the diffraction of optical beams. Solitons also prevent unwanted chaotic behavior. Thus, solitary wave physics plays a significant role from modern optical physics to optical communication, optical switching, and optical storage. The book gives an updated overview of optical solitons and can serve as a reference and guide for advanced students and scientists working in the field and related areas of science where solitons are observed.

Author : Mikhail A. Vorontsov,Walter B. Miller
Publisher : Springer Science & Business Media
Page : 257 pages
File Size : 44,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642603150

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Self-Organization in Optical Systems and Applications in Information Technology by Mikhail A. Vorontsov,Walter B. Miller Pdf

Contrary to monographs on non-linear optics this book concentrates on problems of self-organization in various important contexts. The reader learns how patterns in non-linear optical systems are created and what theoretical methods can be applied to describe them. Next, various aspects of pattern formation such as associative memory, information processing, spatio-temporal instability, photo refraction, and so on are treated. The book addresses graduate students and researchers in physics and optical engineering.

Author : Anonim
Publisher : Unknown
Page : 292 pages
File Size : 42,5 Mb
Release : 1992
Category : Naval research
ISBN : UIUC:30112005545352

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Naval Research Reviews by Anonim Pdf

Author : Bart Kosko
Publisher : Penguin
Page : 272 pages
File Size : 51,7 Mb
Release : 2006-08-17
Category : Science
ISBN : 9781440627156

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Noise by Bart Kosko Pdf

The science commentator author of the best-selling Fuzzy Thinking presents a scientific history of noise for general readers, defining noise as an unaesthetic signal that occurs at every level of the universe that has made significant contributions in each period from the ice age to the information age. 20,000 first printing.