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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Computing 14 (1975), S. 15-27 
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Unter der Voraussetzung, daß ein System mit so vielen Prozessoren, wie für mögliche parallele Aktivitäten benötigt werden, zur Verfügung steht, werden geeignete Sprachen und Übersetzungstechniken untersucht. Solch ein System kann z. B. ein hybrides Rechnersystem sein. Auf der Grundlage eines Konzeptes, das nur eine Zuweisung für jede Variable zuläßt, werden einige Eigenschaften und notwendige Erweiterungen einer Sprache vom CSSL-Typ behandelt. Dafür wird eine Aufteilung in den sequentiellen und parallelen Teil durchgeführt. Die Wechselwirkungen zwischen dem sequentiellen und den parallelen Teil werden beschrieben. Eine geeignete interne Form für das gesamte Programm wird eingeführt und die Transformation des sequentiellen Programmkörpers in ein Graphenmodell für parallele Operationen wird beschrieben.
    Notes: Abstract The basic assumption for the following paper is the availability of as many processors as the possible parallelism in a program requires. Such a system e. g. may be a hybrid system. Based on the single assignment concept, some features and a necessary extention of a CSSL-type language are presented. Therefore a partitioning into the sequential and parallel part has to be performed. The interaction between the sequential and the parallel part is described. A well-suited internal form for the entire program is introduced and the transformation from the sequential program into a graph model for parallel computations is described.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Computing 7 (1971), S. 311-323 
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Summary For programming the Hybrid System TR4 — RA770 at the Computer Center of the University of Stuttgart the programming language ALGOL 60 has been extended by a number of type declarations and code procedures. They enable to control the data transfers between the digital computer and the analogue computer. A description of some implemented facilities of the operating system is given. Also some of the most important code procedures are explained. By a procedure for setting servopotentiometers and a program it is shown how HYGOL can be used.
    Notes: Zusammenfassung Zur Programmierung des Hybrid-Systems TR4 — RA770 am Rechenzentrum der Universität Stuttgart wurde die Programmiersprache ALGOL 60 um eine Reihe von Deklarationen und Code-Prozeduren erweitert. Diese ermöglichen die Steuerung des Datenflusses zwischen Digital- und Analogrechner. Neben der Beschreibung einiger neu implementierten Eigenschaften des Betriebssystems werden die Wirkungen der wichtigsten Code-Prozeduren angegeben. Anhand einer Prozedur zum Potentiometer-Einstellen und eines Programm-Beispiels wird die Anwendung von HYGOL erläutert.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 39 (2005), S. 465-481 
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We evaluate $\mathcal{O}{\alpha_b \alpha_s}$ corrections in the Higgs boson sector of the $\mathcal{C}P$ -conserving MSSM, generalising the known result in the literature to arbitrary values of $\tan\beta$ . A detailed analysis of the renormalisation in the bottom/scalar bottom sector is performed. Concerning the lightest MSSM Higgs boson mass, we find relatively small corrections for positive μ, while for $\mu 〈 0$ the genuine two-loop $\mathcal{O}{\alpha_b \alpha_s}$ corrections can amount up to 3 GeV. Different renormalisation schemes are applied and numerically compared. It is demonstrated that some care has to be taken in choosing an appropriate renormalisation prescription in order to avoid artificially large corrections. The residual dependence on the renormalisation scale is investigated, and the remaining theoretical uncertainties from unknown higher-order corrections in this sector are discussed for different regions of the MSSM parameter space.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 32 (2003), S. 127-133 
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The sfermion-mass spectrum of the minimal supersymmetric standard model is investigated at the one-loop level. An on-shell scheme has been specified for renormalization of the basic breaking parameters of the sfermionic sector. Owing to SU(2)-invariance, the soft-breaking mass parameters of the left-chiral scalar fermions of each isospin doublet are identical. Thus, one of the sfermion masses of each doublet can be expressed in terms of the other masses and receives a mass shift at the one-loop level with respect to the lowest-order value, which can be of O(10 GeV). Both strong and electroweak contributions have been calculated for scalar quarks and leptons.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of pest science 55 (1982), S. 71-75 
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Die Auswirkungen von 3 Insektiziden (Decamethrin, Parathion und Methoxychlor) auf die epigäischen Raubarthropoden in Winterrapsfeldern wurden 1980 und 1981 in Schleswig-Holstein mittels der Fallenfangmethode untersucht. Die Spritzung — gegenMeligethes aeneus —erfolgte relativ früh in der jahreszeitlichen Aspektfolge (Ende April/Anfang Mai). Die Wirkstoffkonzentrationen (aktive Substanz) betrugen bei einer Wasseraufwandmenge von 300 l/ha: Parathion 300 g; Decamethrin 7,5 g; Methoxychlor 600 g. Folgende Wirkungen der Insektizide auf die wichtigsten epigäischen Raubarthropoden (Carabiden, Staphyliniden, Spinnen) konnten festgestellt werden.Parathion: negativer Einfluß auf die untersuchten Carabiden und die Staphyliniden; geringe Schädigung der Spinnen.Methoxychlor: negativer Einfluß auf den Carabiden; teilweise negative Wirkung auf die beiden untersuchten Staphylinidenarten und die kleinen Spinnen.Decamethrin: relativ geringe Beeinträchtigung des Carabiden, aber deutliche Einbußen bei den Staphyliniden; sehr starke, lang anhaltende Reduzierung der kleinen Spinnen. Wenn auch bei den vorliegenden Versuchen nur wenige Räuberarten häufig auftraten, muß doch betont werden, daß diese während ihrer Fortpflanzungsperiode getroffen wurden. Zumindest bei diesen Arten können daher großflächige Insektizideinsätze Langzeitwirkungen haben. Für eine sichere vergleichende Einschätzung des Wirkungsspektrums sind weitere Versuche erforderlich, die mehr Räuberarten einschließen.
    Notes: Abstract The effects of Decamethrin, Methoxychlor and Parathion upon the terrestrial predaceous arthropods were studied by pitfall trapping on winter-rape fields in Northern Germany, 1980 and 1981. The treated plots were rectangular and covered an area of 1.5 ha each. They were arranged in two replicates, just as the untreated plots (about 0.5 ha each). The sprays. — forMeligethes aeneus — were applied at the end of April or at the beginning of May, respectively. The insecticides were sprayed with 300 l water per ha at following dosages: Parathion 300 g a.i./ha; Decamethrin 7.5 g a.i./ha; Methoxychlor 600 g a.i./ha. The influence upon the most abundant species was as follows. Parathion: negative effect upon the Carabid species examined and upon the Staphylinids, relative small decrease of the spiders; Methoxychlor: negative effect onLoricera pilicornis, the only abundant Carabid species, and partly on the Staphylinids and the small spiders; Decamethrin: no great effect onLoricera pilicornis, but the Staphylinids were significantly reduced, as well as the small spiders, the number of which was reduced to a large extent for several weeks in both experiments. The predator species observed were met by the insecticide treatments during their reproductive phase. The large scale use of broad spectrum insecticides can in these cases endanger the existance of predator populations.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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