Nonlinear Dynamics Of Electronic Systems - Proceedings Of The Workshop Ndes ’93


Book Description

This volume contains the extended versions of the papers presented at an international specialist workshop in July 1993, together with some additional contributions, all concerned with the analysis and applications of electronic circuits with chaotic behaviour, providing a topical overview of work in this rapidly developing field.







Chaos in Automatic Control


Book Description

Chaotic behavior arises in a variety of control settings. In some cases, it is beneficial to remove this behavior; in others, introducing or taking advantage of the existing chaotic components can be useful for example in cryptography. Chaos in Automatic Control surveys the latest methods for inserting, taking advantage of, or removing chaos in a variety of applications. This book supplies the theoretical and pedagogical basis of chaos in control systems along with new concepts and recent developments in the field. Presented in three parts, the book examines open-loop analysis, closed-loop control, and applications of chaos in control systems. The first section builds a background in the mathematics of ordinary differential and difference equations on which the remainder of the book is based. It includes an introductory chapter by Christian Mira, a pioneer in chaos research. The next section explores solutions to problems arising in observation and control of closed-loop chaotic control systems. These include model-independent control methods, strategies such as H-infinity and sliding modes, polytopic observers, normal forms using homogeneous transformations, and observability normal forms. The final section explores applications in wireless transmission, optics, power electronics, and cryptography. Chaos in Automatic Control distills the latest thinking in chaos while relating it to the most recent developments and applications in control. It serves as a platform for developing more robust, autonomous, intelligent, and adaptive systems.




Chaos in Circuits and Systems


Book Description

In this volume, leading experts present current achievements in the forefront of research in the challenging field of chaos in circuits and systems, with emphasis on engineering perspectives, methodologies, circuitry design techniques, and potential applications of chaos and bifurcation. A combination of overview, tutorial and technical articles, the book describes state-of-the-art research on significant problems in this field. It is suitable for readers ranging from graduate students, university professors, laboratory researchers and industrial practitioners to applied mathematicians and physicists in electrical, electronic, mechanical, physical, chemical and biomedical engineering and science.




Fireweaver


Book Description

Fireweaver is the true story of May Eulitt and the amazing near-death experience she shared with two of her closest friends. Working in the fields on her family farm, she and her companions are struck by lightning and nearly killed. While unconscious, they travel together to an otherworldly place where they are greeted by spirit guides who explain to them the meaning of their experience and the significance it has for their lives back in the real world. Rather than focusing on the details of the near-death experience itself as many other books on this subject have done, this book focuses more on the context into which the near-death experience can be placed. From the standpoint of spiritual practices, religion, and paranormal experiences, May came from a very unusual background. Going back several generations, the women in her family practiced a form of practical magic that they refer to as the Talent. They have been referred to as witches, gypsies, seers, channelers, or fireweavers; individuals with a telekinetic ability to manipulate fire and other forms of energy. The book describes much of this family background and many of the unusual and mystical experiences that May had prior to her near-death experience, such as the time she saw her Great-grandmother use the Talent to summon up a tornado to punish an abusive husband, or the time that she herself was nearly killed by a psychotic minister who believed she was a witch. After tracing May ́s family history up to the point at which her near-death experience takes place, the book then deals with May ́s struggles to come to terms with the near-death experience in her own life. The main goal of the book is to discover the broader perspective; to find meaning in the near-death experience with regard to spiritual beliefs, religious practices, other paranormal phenomena, and life in general. This focus is made more poignant by the fact that May passed away shortly after this book was completed. Together, May Eulitt and Stephen Hoyer made up a writing team well qualified to tell this story. Because of May ́s family background and the spiritual practices in which she was trained, she was able to provide a unique perspective on the near-death experience. In addition, Stephen is a professional psychologist and a knowledgeable expert on near-death experiences and other paranormal phenomena, such as after-death communication and energy medicine. He has taught workshops on near-death experiences, he has consulted with other experts in the field, and for several years he helped May not only with the writing of the book, but also with the processing of the experience itself. The authors regarded this as a very symbiotic process in which they both grew and benefited a great deal. The book is an attempt to share the essence of that experience with a wider public.







Public Roads


Book Description




Visions Of Nonlinear Science In The 21st Century


Book Description

Authoritative and visionary, this festschrift features 12 highly readable expositions of virtually all currently active aspects of nonlinear science. It has been painstakingly researched and written by leading scientists and eminent expositors, including L Shilnikov, R Seydel, I Prigogine, W Porod, C Mira, M Lakshmanan, W Lauterborn, A Holden, H Haken, C Grebogi, E Doedel and L Chua; each chapter addresses a current and intensively researched area of nonlinear science and chaos, including nonlinear dynamics, mathematics, numerics and technology. Handsomely produced with high resolution color graphics for enhanced readability, this book has been carefully written at a high level of exposition and is somewhat self-contained.Each chapter includes a tutorial and background information, as well as a survey of each area's main results and state of the art. Of special interest to both beginners and seasoned researchers is the identification of future trends and challenging yet tractable problems that are likely to be solved before the end of the 21st century. The visionary and provocative nature of this book makes it a valuable and lasting reference.




Enhanced Methods in Computer Security, Biometric and Artificial Intelligence Systems


Book Description

Enhanced Methods in Computer Security, Biometric and Artificial Intelligence Systems contains over 30 contributions from leading European researchers showing the present state and future directions of computer science research. "Methods of Artificial Intelligence and Intelligent Agents" contains 13 contributions analyzing such areas of AI as fuzzy set theory, predicate logic, neural networks, clustering, data mining and others. It also presents applications of AI as possible solutions for problems like firm bankruptcy, soil erosion, flight control and others. "Information Technology Security" covers three important areas of security engineering in information systems: software security, public key infrastructure and the design of new cryptographic protocols and algorithms. "Biometric Systems" comprises 11 contributions dealing with face picture analysis and recognition systems. This chapter focuses on known methods of biometric problem solution as well as the design of new models.




Digital Communications with Chaos


Book Description

Since the 1970's, there has been a great deal of research effort spent on studying chaotic systems and the properties of the chaotic signals generated. Characterized by their wideband, impulse-like autocorrelation and low cross-correlation properties, chaotic signals are useful spread-spectrum signals for carrying digital information. Spectrum spreading has become one of the most popular modulation techniques for high-speed wireless communications. It makes use of signals of very wide bandwidth to carry information at relatively low data rates, and possesses advantages such as low probability of interception, resistance to jamming, multiple-access capability and mitigation to multipath effect, which are particularly important in a wireless scenario. In addition to enjoying the aforementioned benefits, chaotic signals can be generated using simple circuitries, thus lowering the cost of transceivers. Early study of chaos-based communication systems was focused on a single-user case. In the past few years, more effort has been put on investigating systems with multiple-access capability, which is a key feature of spread-spectrum communication systems. Digital Communications with Chaos presents a detailed study of some multiple-access schemes used for chaos-based communications, and evaluates their performance. In addition, the effectiveness of the multiuser detection techniques, whose primary objective is to reduce interference between users and hence improve performance, is evaluated in the context of multiple-access digital communication systems. - Hot research topic - Describes communication technologies for the future - Authors among the pioneers researching in chaos-based communications