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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Inorganica Chimica Acta 211 (1993), S. 117-120 
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Electrochimica Acta 12 (1967), S. 927-938 
    ISSN: 0013-4686
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Experimental Child Psychology 31 (1981), S. 350-364 
    ISSN: 0022-0965
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Psychology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Cognitive Psychology 5 (1973), S. 310-321 
    ISSN: 0010-0285
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Psychology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical programming 42 (1988), S. 363-374 
    ISSN: 1436-4646
    Keywords: Newton method ; parallel algorithms ; superlinear convergence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract A parallel Newton method is described for the minimization of a twice continuously differentiable uniformly convex functionF(x). The algorithm generates a sequence {x j } which converges superlinearly to the global minimizer ofF(x).
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1436-5057
    Keywords: 90C30 ; 65K05 ; Nonlinear programming algorithms ; penalty algorithms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Diese Arbeit beschreibt einen Algorithmus zur Minimierung einer nichtlinearen Funktion mit nichtlinearen Ungleichungen und Gleichungen als Nebenbedingungen. Die vorgeschlagene Methode hat die Eigenschaft, daß sie unter schwachen Voraussetzungen gegen einen Kuhn-Tucker-Punkt des betrachteten Optimierungsproblems konvergiert und unter stärkeren Voraussetzungen eine quadratische Konvergenzgeschwindigkeit aufweist. Ähnlich wie eine vor kurzem von Rosen vorgeschlagene Methode benutzt der Algorithmus eine Straffunktion, um einen Punkt in der Nähe der optimalen Lösung zu berechnen und schaltet dann auf Robinsons Methode um. Die neue Methode hat gegenüber dem Verfahren von Rosen zwei neue Eigenschaften. Erstens wird der richtige Wert des Parameters in der Straffunktion automatisch gefunden. Zweitens enthalten die mit der Methode von Robinson gelösten Teilprobleme nur lineare Gleichungen als Nebenbedingungen. Die Teilprobleme können daher besonders leicht gelöst werden. Vorläufige numerische Ergebnisse werden berichtet.
    Notes: Abstract This paper presents an algorithm for the minimization of a nonlinear objective function subject to nonlinear inequality and equality constraints. The proposed method has the two distinguishing properties that, under weak assumptions, it converges to a Kuhn-Tucker point for the problem and under somewhat stronger assumptions, the rate of convergence is quadratic. The method is similar to a recent method proposed by Rosen in that it begins by using a penalty function approach to generate a point in a neighborhood of the optimum and then switches to Robinson's method. The new method has two new features not shared by Rosen's method. First, a correct choice of penalty function parameters is constructed automatically, thus guaranteeing global convergence to a stationary point. Second, the linearly constrained subproblems solved by the Robinson method normally contain linear inequality constraints while for the method presented here, only linear equality constraints are required. That is, in a certain sense, the new method “knows” which of the linear inequality constraints will be active in the subproblems. The subproblems may thus be solved in an especially efficient manner. Preliminary computational results are presented.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 20 (1933), S. 144-150 
    ISSN: 1437-1596
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Computing 14 (1975), S. 79-105 
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Es ist bekannt, daß die Anwendung von Methoden der konjugierten Richtungen sowie von geeigneten Modifikationen der Methode der konjugierten Gradienten zur Bestimmung des Minimums einer Funktion vonn Variablen einen-Schritt quadratische Konvergenzgeschwindigkeit ergibt. Eine Menge vonn aufeinanderfolgenden Richtungsvektoren, die von einer dieser Methoden erzeugt worden sind, enthalten Information über die zu minimierende Funktion, die dazu benutzt werden kann, die Konvergenzgeschwindigkeit zu erhöhen durch Ausführung besonderer Iterationsschritte. Unter geeigneten Voraussetzungen ergibt sich für die beschleunigte Methode der konjugierten Gradienten eine (n+1)-Schritt kubische Konvergenzgeschwindigkeit. Die Konvergenzgeschwindigkeit der beschleunigten Methode der konjugierten Richtungen ist in Abhängigkeit von der Häufigkeit der besonderen Iterationsschritte entweder (n+1)-Schritt kubisch oder 2-Schritt superlinear.
    Notes: Abstract Methods of conjugate directions and reset versions of the conjugate gradient method have ann-step quadratic rate of convergence when they are applied to the unconstrained minimization of a function ofn variables. A set ofn consecutive directions of descent generated by one of these methods contains information on the function to be minimized which is used to accelerate the convergence by perorming simple special steps. Under appropriate assumptions the rate of convergence of an accelerated reset version of the conjugate gradient method is (n+1)-step cubic. Depending on the frequency of the special step the rate of convergence of the method of conjugate directions is (n+1)-step cubic or 2-step superlinear.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Computing 62 (1999), S. 147-162 
    ISSN: 1436-5057
    Keywords: AMS Subject Classifications:Primary 41A55, 41A63; Secondary 65D32. ; Key words.Cubature formulas, trigonometric degree, Smoyak construction.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract. We study cubature formulas for d-dimensional integrals with a high trigonometric degree. To obtain a trigonometric degree $\ell$ in dimension d, we need about $d^\ell/\ell !$ function values if d is large. Only a small number of arithmetical operations is needed to construct the cubature formulas using Smolyak's technique. We also compare different methods to obtain formulas with high trigonometric degree.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 207 (1974), S. 505-505 
    ISSN: 1434-4726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The film shows a woman with a hemangioma of the whole tongue and parts of the cheek. When bending the head the patient could not keep her tongue in the mouth, as she became very heavy by the overflow with blood. Caused by the macroglossia the articulation was disturbed. We were successful in reducing the size of the tongue by multiple electrocoagulations.
    Type of Medium: Electronic Resource
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