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This book addresses the mathematical aspects of semiconductor modeling, with particular attention focused on the drift-diffusion model. The aim is to provide a rigorous basis for those models which are actually employed in practice, and to analyze the approximation properties of discretization procedures. The book is intended for applied and computational mathematicians, and for mathematically literate engineers, who wish to gain an understanding of the mathematical framework that is pertinent to device modeling. The latter audience will welcome the introduction of hydrodynamic and energy transport models in Chap. 3. Solutions of the nonlinear steady-state systems are analyzed as the fixed p...
Data evaluation and data combination require the use of a wide range of probability theory concepts and tools, from deductive statistics mainly concerning frequencies and sample tallies to inductive inference for assimilating non-frequency data and a priori knowledge. Computational Methods for Data Evaluation and Assimilation presents interdiscipli
The analysis of singular perturbed differential equations began early in this century, when approximate solutions were constructed from asymptotic ex pansions. (Preliminary attempts appear in the nineteenth century [vD94].) This technique has flourished since the mid-1960s. Its principal ideas and methods are described in several textbooks. Nevertheless, asymptotic ex pansions may be impossible to construct or may fail to simplify the given problem; then numerical approximations are often the only option. The systematic study of numerical methods for singular perturbation problems started somewhat later - in the 1970s. While the research frontier has been steadily pushed back, the exposition...
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Thema des Werkes ist das computerunterstützte numerische Lösen mathematisch orientierter Problemstellungen mit besonderer Betonung der Auswahl und gegebenenfalls eigenen Entwicklung effizienter Numerik-Software. Anhand von ca. 500 Beispielen, 250 Abbildungen, 120 Tabellen sowie 150 Algorithmen und Programmstücken wird erläutert, wie man nach praktisch brauchbaren Lösungen sucht, welche Schwierigkeiten bei der Entwicklung und beim Einsatz von Numerik-Software unter Umständen auftreten können und wie man diese überwindet. An die 100 sachgebietsorientierte Software-Hinweise liefern dem Leser sowohl Information über die kommerziell angebotenen Software-Bibliotheken (IMSL, NAG etc.) als auch über frei verfügbare, qualitativ hochstehende Numerik-Software, auf die man über das Internet zugreift.
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