Description: The basic problems of the modern theory of acoustic, electronic and telecommunications systems are presented. The analysis of multimedia technologies and systems as both theory and practice of recording, processing, transmission and reproduction of acoustic and optical fields is accomplished. A circle of challenges facing professionals in their further studies is drafted.
Keywords: multimedia technologies, electronics, acoustics, telecommunications, non-linear time-varying systems
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The general dielectric theory of molecular crystals is extended to calculate the strain derivatives of dielectric properties, assuming a fixed polarizability relative to the molecular axes. The molecular rotation due to strain makes an important contribution, for which an empirical prescription is given. To illustrate the theory, the elasto-optic coefficients for orthorhombic sulphur are calculated. They apree well with experiment when each sulphur atom is treated as a polarizable point. It is concluded that the polarizability can be treated as fixed, for example in deducing changes of molecular orientation from birefringence measurements through phase transitions.
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Ivano Dionigi, Rector
University of Bologna
Highlights of the Observatory Activities
Bastian Baumann, Secretary General
Magna Charta Observatory, Bologna
Abbreviated key-title: Teor. prakt. pererab. mâsa (Online)
Subject: UDC : 664.91
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Atlas – Kiev, 13 November 2019 20:00
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Scattering matrices in the teory of dilations of isometric operators
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7 Neo-Schumpeterian Theory of the Firm