springer springer vieweg mär 1992 (5 Ergebnisse)

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In three dimensional boundary element analysis, computation of integrals is an important aspect since it governs the accuracy of the analysis and also because it usually takes the major part of the CPU time. The integrals which determine the influence matrices, the internal field and its gradients contain (nearly) singular kernels of order lIr a (0:= 1,2,3,4, ) where r is the distance between the source point and the integration point on the boundary element. For planar elements, analytical integration may be possible 1,2,6. However, it is becoming increasingly important in practical boundary element codes to use curved elements, such as the isoparametric elements, to model general curved surfaces. Since analytical integration is not possible for general isoparametric curved elements, one has to rely on numerical integration. When the distance d between the source point and the element over which the integration is performed is sufficiently large compared to the element size (d 1), the standard Gauss-Legendre quadrature formula 1,3 works efficiently. However, when the source is actually on the element (d=O), the kernel 1I~ becomes singular and the straight forward application of the Gauss-Legendre quadrature formula breaks down. These integrals will be called singular integrals. Singular integrals occur when calculating the diagonals of the influence matrices. 468 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In plating, electrochemical surface finishing, elec trochemical reactors as well as in electrochemical energy conversion, there is an increasing demand for high speed and high efficiency processes. These ob jectives are largely influenced by cell design. The study of such systems requires, besides know-how, a perfect scientific insight into the interaction bet ween electrode kinetics, cell geometry and mass and charge transport. Needless to say, for that purpose, computer modelling has gained rapidly in importance over the last few years. Indeed, up to the 1960's, only problems with rather simple geometries and amenable to analytical techni ques were treated. In 1964, Klingert et al. [60], as well as Fleck et al. [42] outlined the first computer programs for calculating current distributions by the finite dif ference method. F~ve years later, Riggs et al. [94J presented the first electrode shape change simulations. They used also the finite difference method. In 1978, Bergh [ 12J applied at first the - nite element method to predict electrode shape changes. Since then, an increasing number of publi cations on-computer modelling of electrochemical sys tems, appeared. Mainly the finite difference or the finite element method were used. 304 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This volume contains the lectures presented by invited speakers at the IV La Rlibida International Summer School on Nuclear Physics. This was the IV edition of a summer school organized by our group every three years on topics related to nuclear physics. This Summer School was aimed mainly at young nuclear physicists, both theoreticians and experimentalists, engaged in research work at predoctoral or recent postdoctoral level. The topics treated in the three previous editions of the School were: 'Heavy Ion Collisions', 'Theory of Nuclear Structure and Reactions' and 'Nuclear As trophysics'. This year's School was entitled 'Nuclear Physics at the Borderlines'. Special emphasis was placed on those topics along which nuclear physics is ex pected to develop in the next few years. The aim of the School was to provide the attendants with an opportunity to get into close contact with experienced researchers and listen to their account of the present state-of-the-art in nuclear physics and the main future lines of development.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 288 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Dieses bewährte Lehrbuch ist aus einem Vorlesungszyklus für Studiengänge der Ingenieur- und Wirtschaftswissenschaften sowie der Informatik heraus entstanden. Es schlägt eine Brücke zwischen der rein theoretischen Darstellung und der angwandten Mathematik; es zeichnet sich durch gute Lesbarkeit sowie leichte Verständlichkeit aus. Vollständig durchgerechnete Beispiele ergänzen das didaktische Konzept.Damit eignet sich das Werk nicht nur zum Gebrauch neben Vorlesungen an Hochschulen und Fachhochschulen, sondern auch zum Selbststudium, insbesondere für Studienanfänger.Nach einer kurzen Lieferlücke macht dieser Nachdruck das erfolgreiche Buch wieder verfügbar. 476 pp. Deutsch.

Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -1 Einleitung.- 1.1 Thema und Ziele dieser Arbeit.- 1.2 Aufbau.- 2 Analyse des klassischen Ansatzes zur Software-Bewertung.- 2.1 Software-Maße.- 2.2 Drei konventionelle Software-Maße.- 2.3 Versuche, die Aussagekraft von Software-Maßen zu erhöhen.- 2.4 Eigener Ansatz.- 3 Methoden zur formalen Semantikbeschreibung.- 3.1 Syntax, Semantik und Pragmatik.- 3.2 Formale Semantikspezifikationsmethoden.- 3.3 Denotationelle Semantik.- 3.4 Semantikbasierte Compiler-Erzeugung.- 4 Theorie der Informationsbereiche.- 4.1 Informationsbereiche.- 4.2 Produkt-Informationsbereiche.- 4.3 Summen-Informationsbereiche.- 4.4 Funktionen-Informationsbereiche.- 4.5 Folgen-Informationsbereiche.- 4.6 Reflexive Informationsbereiche.- 4.7 Denotationelle Semantik und Informationsbereiche.- 5 Programme als quantitative Informationstransformatoren.- 5.1 Vorzeichenaiialyse als Beispiel einer abstrakten Interpretation.- 5.2 Grundlagen zur Theorie der abstrakten Interpretation.- 5.3 Definition der neuen abstrakten Programminterpretation.- 5.4 Zusammenfassung.- 6 Möglichkeiten zur weiteren Entwicklung und Anwendung der Theorie.- 6.1 Ansätze zur Definition semantikbasierter Informationsmaße.- 6.2 Datentypen als Informationsbereiche.- 6.3 Die Frage nach der Existenz eines quantitativen Gesetzes für Transforma-tionen von Information mittels Computerprogrammen.- 7 Schlußbemerkungen.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 116 pp. Deutsch.