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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 642-643 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] PICTURES add a vital dimension to books on natural history and, with the improvement in techniques for printing illustrative material, more and more reasonably-priced illustrated biology books are coming on to the market. Nature Detective by Hugh Falkus (Gollancz: London, £6.95) is a most ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 274 (1978), S. 683-685 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Toads spend most of the year on land but each spring they mass together in ponds to breed, all the spawning taking place within a week or two. The male clasps on to the female's back (amplexus) and may be carried around by her for several days before she eventually lays her eggs, whereupon he ...
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,—As professional biologists we wish to record our strong disapproval of your attitude to environmental issues as expressed in recent editorials, and in particular your derisory criticism of The Ecologist's "Blueprint for Survival" (Nature, 235, 63 ; 1972). It is now widely acknowledged ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 269 (1977), S. 56-58 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Toads visit ponds to breed in early spring. All the year's reproductive activity takes place within a few weeks, after which the toads leave the pond and remain on land until the next year3. Our observations were made at a pond near Oxford in March and April 1977. Every female we found in the pond ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 266 (1977), S. 82-83 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BIOLOGY has become such a diverse subject, and one in which there are so many rapidly-developing areas, that the single, comprehensive textbook covering the whole field has become largely obsolete. A new development has been the production of series of smaller, cheaper books, to which new, ...
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1741-0444
    Keywords: Animal behaviour ; Simulation ; Observability ; Catastrophe theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Ce mémoire concerne le développement des modéles de comportement par simulation sur ordinateur, révélant les nouvelles caractéristiques du système et examinant les problèmes découlant de l'application des différentes techniques d'analyse des systèmes. Nous commençons par un aspect particulier du comportement des animaux: la cour d'un triton ponctué. En partant d'une théorie générale déterministe du comportement des animaux, qui a été développée par la littérature, on décrit une série de quatre modèles de cour du triton. On maintient qu'une des caractéristiques générales des modèles est l'impossibilité apparente de les observer. Des idées relevant de la théorie des automates et de la théorie des catastrophes rentrent dans la discussion des moyens de contourner le problème des possibilités d'observation. On conclut que les aspects non déterministes et non observables du comportement des animaux peuvent être expliqués par la théorie générale à condition que l'espace de contrôle soit soigneusement et convenablement défini.
    Abstract: Zusammenfassung Diese Arbeit befaßt sich mit der Entwicklung von Verhaltensmodellen durch Computersimulierung, wodurch neue Eigenschaften des Systems zutage treten und mit der Überprüfung von Problemen, die sich aus der Anwendung der verschiedenen Verfahren für die Systemanalyse ergeben. Wir beginnen mit einer Beschreibung eines bestimmten Aspekts des Tierverhaltens: Dem Liebeswerben des Molches. Auf der Grundlage einer bestimmenden allgemeinen Theorie für das Tierverhalten, die in der Literatur entwickelt wurde, wird das Liebeswerben des Molches anhand von vier Modellen beschrieben. Es wird angeführt, daß ein allgemeines Merkmal der Verhaltensmodelle ihre anscheinende Unbeobachtbarkeit ist. Konzepte aus der Automatentheorie und der Katastrophentheorie werden bei der Besprechung der Art und Weise zur Umgehung des Unbeobachtbarkeitsproblems verwendet. Man kommt zu der Folferung, daß anscheinend nicht bestimmende und unbeobachtbare Aspekte des Tierverhaltens innerhalb der allgemeinen Theorie berücksichtigt werden können, vorausgesetzt, daß der Kontrollraum sorgfältig und richtig festgelegt wird.
    Notes: Abstract The paper is concerned with the development of behavioural models by computer simulation, revealing new features of the system, and examining problems emerging from the application of various techniques of systems analysis. We start with a description of a particular aspect of animal behaviour: the courtship of the smooth newt. From a basis of a deterministic general theory of animal behaviour, which has been developed in the literature, a series of four models of newt courtship is described. It is argued that a general feature of behavioural models is their apparent unobservability. Concepts from automata theory and from catastrophe theory are employed in the discussion of ways of circumventing the observability problem. It is concluded that apparently nondeterministic and unobservable aspects of animal behaviour can be accounted for within the general theory, provided the control space is carefully and properly defined.
    Type of Medium: Electronic Resource
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