S.B. Leble's book deals with nonlinear waves and their propagation in metallic and dielectric waveguides and media with stratification. The underlying nonlinear evolution equations (NEEs) are derived giving also their solutions for specific situations. The reader will find new elements to the traditional approach. Various dispersion and relaxation laws for different guides are considered as well as the explicit form of projection operators, NEEs, quasi-solitons and of Darboux transforms. Special points relate to: 1. the development of a universal asymptotic method of deriving NEEs for guide propagation; 2. applications to the cases of stratified liquids, gases, solids and plasmas with various nonlinearities and dispersion laws; 3. connections between the basic problem and soliton- like solutions of the corresponding NEEs; 4. discussion of details of simple solutions in higher- order nonsingular perturbation theory.

TIlis volume contains the contributions to the Euromech Colloquium No. 241 on Nonlinear Waves in Active Media at the Institute of Cybernetics of the Estonian Academy of Sciences, Tallinn, Estonia, USSR, September 27-30, 1988. The Co-chairmen of the Euromech Colloquium felt that it would be a good service to the community to publish these proceedings. First, the topic itself dealing with various wave processes with energy influx is extremely interesting and attracted a much larger number of participants than usual - a clear sign of its importance to the scientific community. Second, Euromech No. 241 was actually the first Euromech Colloquium held in the Soviet Union and could thus be viewed as a milestone in the extending scientific contacts between East and West. At the colloquium 50 researchers working in very different branches of sci ence met to lecture on their results and to discuss problems of common interest. An introductory paper by I. Engelbrecht presents the common motivation and background of the topics covered. Altogether 36 speakers presented their lectures, of which 30 are gathered here. The remaining six papers which will appear elsewhere are listed on page X. In addition, three contributions by authors who could not attend the colloquium are included. The two lectures given by A.S. Mikhailov, V.S. Davydov and V.S. Zykov are here published as one long paper.

The papers included in this proceedings volume are mostly original research papers, dealing with life-span of waves, nonlinear interaction of waves, and various applications to fluid mechanics.

This new book leads readers step-by-step through the complexities encountered as moving objects approach and cross the sound barrier. The problems of transonic flight were apparent with the very first experimental flights of scale-model rockets when the disastrous impact of shock waves and flow separations caused the aircraft to spin wildly out of control. Today many of these problems have been overcome, and this book offers an introduction to the transonic theory that has made possible many of these advances. The emphasis is on the most important basic approaches to the solution of transonic problems. The book also includes explanations of common pitfalls that must be avoided. An effort has been made to derive the most important equations of inviscid and viscous transonic flow in sufficient detail so that even novices may feel confident in their problem-solving ability. The use of computer approaches is reviewed, with references to the extensive literature in this area, while the critical shortcomings of an exclusive reliance on computational methods are also described. The book will be valuable to anyone who needs to acquire an understanding of transonic flow, including practicing engineers as well as students of fluid mechanics.

Since 1972 the Schools on Nonlinear Physics in Gorky have been a meeting place for Soviet scientists working in this field. Instead of producing for the first time English proceedings it has been decided to present a good cross section of nonlinear physics in the USSR. Thus the participants at the last School were invited to provide English reviews and research papers for these two volumes (which in the years to come will be followed by the proceedings of forthcoming schools). "The first volume" starts with a historical overview of nonlinear dynamics from Poincare to the present day and touches topics like attractors, nonlinear oscillators and waves, turbulence, pattern formation, and dynamics of structures in nonequilibrium dissipative media. It then deals with structures, bistabilities, instabilities, chaos, dynamics of defects in 1d systems, self-organizations, solitons, spatio-temporal structures and wave collapse in optical systems, lasers, plasmas, reaction-diffusion systems and solids."

VI The idea to hold such a meeting in Germany for the first time was due to Prof. H. Pelzl. Its realization was greatly supported by financial help of the Stiftung Volkswagenwerk and the Deutsche Physikalische Gesellschaft, which is gratefully acknowledged. The Editors VII Contents 1. Basic Principles Photoacoustic Effect in Condensed Matter - Historical Development E. LUscher 1 Opto-Acoustic Spectroscopy - A Tool for the Study of Optical Spectra of very Transparent Materials 21 C. K. N. Patel Thermodynamic r ode 1 s of the Photoacousti c Effect P. Korpiun 40 Frequency Dependent Photoacous tic Spectroscopy of Condensed t latter J. Pelzl 52 Photoacoustic Spectroscopies D. Fournier and A. C. Boccara so Comparison Between Photoacoustic and Other Spectroscopies 94 R. Til gner Generation of Acoustic Waves in Liquids by Pulsed Lasers lOS H. W. Sigrist Piezoelectric Detection in Photoacoustic Spectroscopy. Theory and Application 115 H. D. Breuer Photothermal Radiometry P. -E. Nordal and S. O. Kanstad 129 Contents VIII 2. Spectroscopic Applications Applications of Resonant Photoacoustic Spectroscopy 139 J. Roper, K. Frank, and P. Hess Photoacoustic Fourier Transform Spectroscopy for the Visible and the Near Infrared D. uebarre, A. C. Boccara and D. Fournier 147 Photoacoustic Spectra of Biliverdin Dimethyl Ester S. E. Braslavsky, R. Ellul, S. Culshaw, I. -M. Tegmo-larsson, and K. Schaffner 154 Quantitative Photoacoustic Spectroscopy of Phenolred Potassium Salt in Polyvinalalcohol W. Gortz and H. -H. Perkampus 163 In Situ Photoacoustic Spectroscopy of Copper Electrodes in Solution U. Sander, J. K. Dohrmann, and H. -H."

This anthology was originally planned in connection with a symposium "Language in Primates: Implications for Linguistics, Anthropology, Psychology, and Philosophy," at Miami University, Oxford, Ohio. Publication of the book would not have been possible without the support given to the Symposium by many individuals and groups. The Editors thank everyone involved for their kind and generous assistance. Specifi cally, we thank the invited speakers at the Symposium, Thomas A. Sebeok, H. Lyn Miles, Roger S. Fouts, and Thomas Simon. The chapters in this book by Miles, Fouts, and Simon are revised versions of their lectures at the Symposium. We thank Edward Simmel for his encouragement, his patience with our efforts, and his help in planning and directing the Symposium. For their financial assistance, we thank the co-sponsors of the Symposium: the Sigma Chi Foundation/William P. Huffman Scholar-in Residence Program at Miami University, as well as the Departments of Classics, Philosophy, Psychology, and Sociology and Anthropology at Miami. We thank Barbara Johnson, Polly J. Harris and Brenda Shaw for their secretarial and editorial help, and Shirley Gallimore for her patience, care, good humor, and hard work in typing the manuscript. Finally, we thank the contributors to this volume."

This text contains the proceedings of an IUTAM Symposium on turbulent flows at low Mach number, in which fluctuations in density occur as a result of heat transfer or of mixing of different fluids. Such flows occur in the atmosphere, the ocean, and in chemical engineering. In addition during combustion large fluctuations in density occur as a result of heat release; the flows that are considered here do not involve heat release, for the most part, but the variable density flows that are considered can serve as a paradigm for many of the problems that arise in combustion as a result of the density fluctuations. Compressible flows - such as supersonic ones - are also considered in order to underline their similarities to and their differences from low-speed variable density flows. The book should be of interest to mechanical, aerospace, civil, and chemical engineers, meteorologists and oceanographers and those who deal with fluids in which fluctuations of density occur.

Iterative methods for calculating static fields are presented in this book. Static field boundary value problems are reduced to the boundary integral equations and these equations are solved by means of iterative processes. This is done for interior and exterior problems and for var ious boundary conditions. Most problems treated are three-dimensional, because for two-dimensional problems the specific and often powerful tool of conformal mapping is available. The iterative methods have some ad vantages over grid methods and, to a certain extent, variational methods: (1) they give analytic approximate formulas for the field and for some functionals of the field of practical importance (such as capacitance and polarizability tensor), (2) the formulas for the functionals can be used in a computer program for calculating these functionals for bodies of arbitrary shape, (3) iterative methods are convenient for computers. From a practical point of view the above methods reduce to the cal culation of multiple integrals. Of special interest is the case of inte grands with weak singularities. Some of the central results of the book are some analytic approximate formulas for scattering matrices for small bodies of arbitrary shape. These formulas answer many practical questions such as how does the scattering depend on the shape of the body or on the boundary conditions, how does one calculate the effective field in a medium consisting of many small particles, and many other questions."

Este libro pone a disposiciA3n del lector de habla hispana un tratamiento distinto y original de los temas fundamentales de la IngenierA-a AcAstica. El libro contiene los fundamentos cientA-ficos de las tA(c)cnicas utilizadas para lograr un ambiente acAstico menos contaminado. La mayorA-a de los capA-tulos consideran, directa o indirectamente, el problema de cA3mo reducir los niveles de ruido. Se ha puesto especial atenciA3n en los principios fundamentales y en la comprensiA3n de los fenA3menos fA-sicos involucrados en las distintas problemAticas de la IngenierA-a AcAstica. El texto estA orientado tanto a estudiantes y docentes de nivel universitario, como a ingenieros de distintas especialidades interesados en este importante tema.

Rudolph Koenig was one of the more prolific and colourful instrument makers in the renowned nineteenth-century precision instrument trade of Paris. Beginning his career as a violin maker, in 1858 the young Prussian immigrant shifted his talents towards the growing field of acoustics. Altered Sensations is a portrait of his vibrant atelier, a place of construction, commerce and experiment. For over forty years it was also a popular meeting place for scientists, artisans, musicians and teachers. Using archival and collection research from across North American and Europe, David Pantalony has traced the material and social influences of this space on the development of modern acoustics. In particular, he has detailed the manner in which Koenig modified, extended, spread and challenged Hermann von Helmholtz's Sensations of Tone.
A large part of the research on Koenig comes from the actual products of his workshop which survive in museums and collections around the world. The second section of Altered Sensations provides a Catalogue Raisonne of Koenig's entire line of instruments, including their history, details from specific examples, locations, and references in the literature. This catalogue will serve as a practical guide for curators and researchers as well as a comprehensive overview of nineteenth-century acoustical practice.
"

Acoustics, the science of sound, has developed into a broad interdisciplinary field encompassing the academic disciplines of physics, engineering, psychology, speech, audiology, music, architecture, physiology, neuroscience and others. Here is an unparalleled modern handbook reflecting this richly interdisciplinary nature edited by one of the acknowledged masters in the field, Thomas Rossing.

Researchers and students benefit from the comprehensive contents spanning: animal acoustics including infrasound and ultrasound, environmental noise control, music and human speech and singing, physiological and psychological acoustics, architectural acoustics, physical and engineering acoustics, medical acoustics and ocean acoustics.

The Springer Handbook of Acoustics reviews the most important areas of acoustics, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, e.g. computer recognition and synthesis of speech, physiological acoustics, psychological acoustics, thermoacoustics, diagnostic imaging and therapeutic applications and acoustical oceanography.

This new edition of the Handbook features over 11 revised and expanded chapters, new illustrations andtwo new chapters covering microphone arrays, acoustic metamaterials and acoustic emission. These improvements will make the handbook even more useful as a reference and a guide for researchers and students in every branch of acoustics.

Praise for the first edition:

"This treatise is a successful attempt to cover in one book the diverse field of acoustics, which ranges from physics to music and from formal mathematics to technological applications. ... It is this reviewer's opinion that a handbook like Rossing's, which covers the whole field of acoustics, serves a real purpose because it not only gives one a chance to see how one's specialty is covered but it also permits one to make a quick survey of other acoustical areas." (Leo Beranek, American Journal of Physics, Vol. 77 (12), December, 2009)

"The Springer Handbook of Acoustics falls into that exceptional list. ...every physics department should have a copy available." (John L. Hubisz, The Physics Teacher, Vol. 48, March, 2010)

"This handbook is an excellent addition to the acoustics literature. ... The handbook nicely covers both basics and advances in several areas of acoustics. Several chapters provide good mathematical depth, making the handbook useful as a research and technical resource. ... The accompanying CD-ROM provides the entire handbook and a large number of audio and video files, making it easy to use effectively in a classroom. Overall, a very useful educational and research resource. Summing Up: Recommended. Upper-division undergraduates through professionals." (M. G. Prasad, CHOICE, Vol. 45 (5), January, 2008)

"This book covers a wide range of topics and the inclusion of musical acoustics, computer and electronic music appeal to me (singer, song-writer, performer and recording studio co-owner). This handbook is probably well suited for an undergraduate-level introduction to an acoustics course. ... Further, there is a CD-ROM containing all the chapters in the handbook. ... The wide range of topics, inclusion of music-related chapters, eye-pleasing presentations and other useful features make this a very good book to have on your shelf." (Tim Casey, International Journal of Acoustics and Vibration, Vol. 13 (1), 2008)

"The Springer Handbook of Acoustics comprises 28 chapters written by 33 authors. ... The enclosed CD-ROM is a valuable addition as it contains ... additional material in the form of video and audio files. ... this book has much to recommend it with well presented topics and copious clear illustrations. The Handbook of Acoustics is useful as a source book for anyone who needs or wants to become familiar with the jargon and issues related to a specific subfield of acoustics ... ." (Robert I. Odom, Siam Review, Vol. 50 (3), 2008)

The Springer Handbook of Acoustics reviews the most important areas of acoustics, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, e.g. computer recognition and synthesis of speech, physiological acoustics, psychological acoustics, thermoacoustics, diagnostic imaging and therapeutic applications and acoustical oceanography.

This new edition of the Handbook features over 13 revised and expanded chapters, new illustrations and 3 new chapters covering microphone arrays, acoustic metamaterials and acoustic emission. These improvements will make the handbook even more useful as a reference and a guide for researchers and students in every branch of acoustics."

The theory of water waves is most varied and is a fascinating topic. It includes a wide range of natural phenomena in oceans, rivers, and lakes. It is mostly concerned with elucidation of some general aspects of wave motion including the prediction of behaviour of waves in the presence of obstacles of some special configurations that are of interest to ocean engineers. Unfortunately, even the apparently simple problems appear to be difficult to tackle mathematically unless some simplified assumptions are made. Fortunately, one can assume water to be an incompressible, in viscid and homogeneous fluid. The linearised theory of water waves is based on the assumption that the amplitude of the motion is small compared to the wave length. If rotational motion is assumed, then the linearised theory of water waves is essentially concerned with solving the Laplace equation in the water region together with linearised boundary condition. There are varied classes of problems that have been/are being studied mathematically in the literature within the framework of linearised theory of water waves for last many years. Scattering by obstacles of various geometrical configurations is one such class of water wave problems. This book is devoted to advanced mathematical work related to water wave scattering. Emphasis is laid on the mathematical and computational techniques required to study these problems mathematically. The book contains nine chapters. The first chapter is introductory in nature. It includes the basic equations of linearised theory for a single layer fluid, a two-layer fluid, solution of dispersion equations, and a general idea on scattering problems and the energy identity in water with a free surface. Chapter 2 is concerned with wave scattering involving thin rigid plates of various geometrical configurations, namely, plane vertical barriers or curved barriers, inclined barriers, horizontal barrier, and also thin elastic vertical plate. For the horizontal case, the barrier is submerged below an ice-cover modelled as a thin elastic plate floating on water. Chapter 3 discusses wave scattering by a rectangular trench by using Galerkin technique. Chapter 4 involves wave scattering by a dock by using Carleman singular integral equation followed by reduction to Riemann-Hilbert problems. Chapter 5 involves several wave scattering problems involving discontinuities at the upper surface of water by using the Wiener-Hopf technique, by reduction to Carleman singular integral equations. Chapter 6 considers scattering by a long horizontal circular cylinder either half immersed or completely submerged. In chapter 7, some important energy identities are derived for scattering problems in a single-layer and also in a two-layer fluid. Chapter 8 is concerned with wave scattering in a two-layer fluid by a thin vertical plate and by a long horizontal circular cylinder submerged in either of the two layers. Chapter 9 is the final chapter which considers a number of wave scattering problems in a single-layer or a two-layer fluid with variable bottom topography by using a simplified perturbation analysis It is hoped that this book will be useful to researchers on water waves. The several wave scattering problems presented in the book are mostly based on the research work carried out by the authors and their associates.

Acoustics of Nanodispersed Magnetic Fluids presents key information on the acoustic properties of magnetic fluids. The book is based on research carried out by the author as well as on many publications in both the Russian and foreign scientific literature from 1969 onwards. It describes a wide variety of topics, which together lay the foundation of a new scientific research area: the acoustics of nanodispersed media. The book examines the nanoscale structure of matter in specific areas and discusses the following: Model theory and known features of the propagation of sound waves in magnetised fluids Acoustomagnetic and magnetoacoustic effects in magnetic fluids Acoustomagnetic spectroscopy of vibrational modes in the liquid-shell system Vibration and rheological effects of magnetised magnetic fluids Acoustometry of the shape of magnetic nanoaggregates and non-magnetic microaggregates Acoustogranulometry, a new method for studying the physical properties of magnetic nanoparticles dispersed in a carrier fluid The book is a valuable resource for engineers and researchers in the fields of acoustics, physical acoustics, magnetic hydrodynamics, and rheology physics. The experimental methods, which are described in this book, are based on incompatible features of magnetic fluids, i.e. strong magnetism, fluidity and compressibility. As a result, this can find industrial application in advanced technology. It is also useful for both advanced undergraduate and graduate students studying nanotechnology, materials science, physical and applied acoustics.

Sprachtechnologie in der Anwendung" wurde von Praktikern fur Praktiker geschrieben. Das Buch fuhrt ein in die Technologien zur Sprachverarbeitung und informiert uber den Stand der Technik von Sprachdialogsystemen. Es unterstutzt die Entscheidungsfindung und Vorbereitung bei der Einfuhrung eines Sprachportals, hilft bei der Auswahl der richtigen Systeme und der Vermeidung von Stolpersteinen.

Durch seine klare Sprache, die zahlreichen Praxisbeispiele und das ausfuhrliche Glossar schlagt das Buch eine Brucke zwischen Entscheidern und Technologen im Unternehmen. Es wendet sich sowohl an Manager, die uber die Einfuhrung von Sprachportalen entscheiden, als auch IT-Fachleute, die diese umsetzen. Betreiber von Sprachportalen unterstutzt es bei der Bewertung bestehender Anwendungen und gibt Hinweise zu deren Optimierung."

Dieses Lehrbuch bietet eine umfassende Einfuhrung in die moderne Technische Akustik. Es wendet sich an Studierende der Ingenieurwissenschaften und der Physik sowie an Ingenieure und Naturwissenschaftler, die bereits in der Praxis tatig sind.

Behandelt werden: Schallentstehung und Schallausbreitung in Gasen, Flussigkeiten und elastischen Festkorpern - Wellengleichungen in linearer und nicht-linearer Form - Elektromechanische Analogien und ihre Anwendung - Schallsender und Schallempfanger fur Hor- und Ultraschall - Raum- und Bauakustik - Akustische Messtechnik - Wasserschall (Hydroakustik) - Ultraschall (Erzeugung, Detektion und Anwendung) - Physiologische und psychologische Akustik - Methoden der Schallaufzeichnung - Schallerzeugung durch Stromung (Aeroakustik) - Experimentelle und numerische Verfahren der Aeroakustik - Entstehung und Vermeidung von Larm.

Weiterhin werden die Methoden der Numerischen Akustik (Computational Acoustics) vorgestellt und eingehend besprochen: insbesondere Finite-Elemente- und Boundary-Elemente-Methoden (FEM bzw. BEM) fur die Berechnung von Schallfeldern und elektroakustischen Wandlern.

Abschliessend diskutieren die Autoren aktuelle Forschungsprojekte aus dem Bereich der Technischen Akustik. "

Elastic Waves: High Frequency Theory is concerned with mathematical aspects of the theory of high-frequency elastic waves, which is based on the ray method. The foundations of elastodynamics are presented along with the basic theory of plane and spherical waves. The ray method is then described in considerable detail for bulk waves in isotropic and anisotropic media, and also for the Rayleigh waves on the surface of inhomogeneous anisotropic elastic solids. Much attention is paid to analysis of higher-order terms and to generation of waves in inhomogeneous media. The aim of the book is to present a clear, systematic description of the ray method, and at the same time to emphasize its mathematical beauty. Luckily, this beauty is usually not accompanied by complexity and mathematical ornateness.

This comprehensive revision begins with a review of static electric and magnetic fields, providing a wealth of results useful for static and time-dependent fields problems in which the size of the device is small compared with a wavelength. Some of the static results such as inductance of transmission lines calculations can be used for microwave frequencies. Familiarity with vector operations, including divergence and curl, are developed in context in the chapters on statics. Packed with useful derivations and applications.

Scholarly writing on the music of Arvo Part is situated primarily in the fields of musicology, cultural and media studies, and, more recently, in terms of theology/spirituality. Arvo Part: Sounding the Sacred focuses on the representational dimensions of Part's music (including the trope of silence), writing and listening past the fact that its storied effects and affects are carried first and foremost as vibrations through air, impressing themselves on the human body. In response, this ambitiously interdisciplinary volume asks: What of sound and materiality as embodiments of the sacred, as historically specific artifacts, and as elements of creation deeply linked to the human sensorium in Part studies? In taking up these questions, the book "de-Platonizes" Part studies by demystifying the notion of a single "Part sound." It offers innovative, critical analyses of the historical contexts of Part's experimentation, medievalism, and diverse creative work; it re-sounds the acoustic, theological, and representational grounds of silence in Part's music; it listens with critical openness to the intersections of theology, sacred texts, and spirituality in Part's music; and it positions sensing, performing bodies at the center of musical experience. Building on the conventional score-, biography-, and media-based approaches, this volume reframes Part studies around the materiality of sound, its sacredness, and its embodied resonances within secular spaces.

This book explores the fascinating and intimate relationship between music and physics. Over millennia, the playing of, and listening to music have stimulated creativity and curiosity in people all around the globe. Beginning with the basics, the authors first address the tonal systems of European-type music, comparing them with those of other, distant cultures. They analyze the physical principles of common musical instruments with emphasis on sound creation and particularly charisma. Modern research on the psychology of musical perception - the field known as psychoacoustics - is also described. The sound of orchestras in concert halls is discussed, and its psychoacoustic effects are explained. Finally, the authors touch upon the role of music for our mind and society. Throughout the book, interesting stories and anecdotes give insights into the musical activities of physicists and their interaction with composers and musicians.

This text is written by researchers at BT Laboratories and at universities who have investigated a set of problems in vision, speech and natural language. It presents a diversity of approaches to the solution of these problems, based on a range of neural network paradigms. The book also includes sections on implementation, which discuss some approaches to hardware realization; and architectures, which describe new ideas and algorithms. The findings discussed here should be of interest not only to those working in the applications areas discussed, but also to people working more widely in the field of neural networks. This book should be of interest to working researchers and graduate students in neural networks.