Dietrich Wolf - Böcker

The NATO Advanced Study Institute on "Scale Invariance, Interfaces and Non­ Equilibrium Dynamics" was held at the Isaac Newton Institute for Mathematical Sciences in Cambridge, UK from 20-30 June 1994. The topics discussed at the Institute were all concerned with the origin and nature of complex structures found far from equilibrium. Examples ranged from reaction­ diffusion systems and hydrodynamics through to surface growth due to deposition. A common theme was that of scale invariance due to the self-similarity of the underly­ ing structures. The topics that were covered can be broadly classified as pattern for­ mation (theoretical, computational and experimental aspects), the non-equilibrium dynamics of the growth of interfaces and other manifolds, coarsening phenomena, generic scale invariance in driven systems and the concept of self-organized critical­ ity. The main feature of the Institute was the four one-hour-Iong lectures given each day by invited speakers. In addition to thirty-seven of these lectures, two contributed lectures were also given. The many questions that were asked after the lectures attested to the excitement and interest that the lecturers succeeded in generating amongst the students. In addition to the discussions initiated by lectures, an im­ portant component of the meeting were the poster sessions, where participants were able to present their own work, which took place on three of the afternoons. The list of titles given at the end of these proceedings gives some idea of the range and scope of these posters.

The NATO Advanced Study Institute on "Scale Invariance, Interfaces and Non­ Equilibrium Dynamics" was held at the Isaac Newton Institute for Mathematical Sciences in Cambridge, UK from 20-30 June 1994. The topics discussed at the Institute were all concerned with the origin and nature of complex structures found far from equilibrium. Examples ranged from reaction­ diffusion systems and hydrodynamics through to surface growth due to deposition. A common theme was that of scale invariance due to the self-similarity of the underly­ ing structures. The topics that were covered can be broadly classified as pattern for­ mation (theoretical, computational and experimental aspects), the non-equilibrium dynamics of the growth of interfaces and other manifolds, coarsening phenomena, generic scale invariance in driven systems and the concept of self-organized critical­ ity. The main feature of the Institute was the four one-hour-Iong lectures given each day by invited speakers. In addition to thirty-seven of these lectures, two contributed lectures were also given. The many questions that were asked after the lectures attested to the excitement and interest that the lecturers succeeded in generating amongst the students. In addition to the discussions initiated by lectures, an im­ portant component of the meeting were the poster sessions, where participants were able to present their own work, which took place on three of the afternoons. The list of titles given at the end of these proceedings gives some idea of the range and scope of these posters.

Dieses Lehrbuch bietet eine umfassende Einführung 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 tätig sind.Behandelt werden: Schallentstehung und Schallausbreitung in Gasen, Flüssigkeiten und elastischen Festkörpern - Wellengleichungen in linearer und nicht-linearer Form - Elektromechanische Analogien und ihre Anwendung - Schallsender und Schallempfänger für Hör- und Ultraschall - Raum- und Bauakustik - Akustische Messtechnik - Wasserschall (Hydroakustik) - Ultraschall (Erzeugung, Detektion und Anwendung) - Physiologische und psychologische Akustik - Methoden der Schallaufzeichnung - Schallerzeugung durch Strömung (Aeroakustik) - Experimentelle und numerische Verfahren der Aeroakustik - Entstehung und Vermeidung von Lärm.Weiterhin werden die Methoden der Numerischen Akustik (Computational Acoustics) vorgestellt und eingehend besprochen:insbesondere Finite-Elemente- und Boundary-Elemente-Methoden (FEM bzw. BEM) für die Berechnung von Schallfeldern und elektroakustischen Wandlern. Abschließend diskutieren die Autoren aktuelle Forschungsprojekte aus dem Bereich der Technischen Akustik.

Dieses Lehrbuch wendet sich an fortgeschrittene Studenten der Natur- und Ingenieurwissenschaften, insbesondere auch der Informatik. In Forschung und Entwicklung Tätige können ebenfalls davon profitieren, da auch zahlreiche Ergebnisse aus neueren Forschungsarbeiten eingeflossen sind. Dabei wurde Wert darauf gelegt, nicht nur Ergebnisse zu präsentieren und zu kommentieren, sondern auch die grundlegenden Ansätze und Methoden zu ihrer Herleitung zu beschreiben. Der Leser wird damit in die Lage versetzt, ähnliche Probleme selbständig zu lösen.