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Showing 781-795 of 795 results

  2. The Structure of Physicians’ Activities in General Practice and Modelling their Degree of Coverage

    The development of problems in health care delivery, both in regard to quality and quantity as well as the resulting economic repercussions, induces...
    P. L. Reichertz, B. Schwarz, H. J. Meldau in Technology and Health: Man and His World
    Conference paper 1980

  3. Growth, Properties and Applications of Narrow-Gap Semiconductors

    This article reviews selected properties of the narrow-gap semiconductors Pb1-xSnx Te, Pb1-xSnxSe and Hg1-xCdxTe which are accepted for infrared...
    Horst Maier, Joachim Hesse in Organic Crystals, Germanates, Semiconductors
    Conference paper 1980

  4. Retarded equations with infinite delays

    It is the purpose of these notes to describe the theory of Hale and Kato for functional differential equations based on a space of initial data which...
    Jack K. Hale in Functional Differential Equations and Approximation of Fixed Points
    Conference paper 1979

  5. Movement detection in the posterolateral eyes of jum** spiders (Evarcha arcuata, Salticidae)

    1.

    Jum** spiders react to a single moving object in the visual field of the posterolateral eyes with an accurate turn of the prosoma which brings...

    Peter Duelli in Journal of comparative physiology
    Article 01 March 1978

  6. Stability results for a class of non-linear parabolic equations

    We study the asymptotic behaviour of the solutions of the equation u t =Au+λu−|u| α u. Denoting by λ 0 the principal eigenvalue of the second-order...

    P. de Mottoni, G. Talenti, A. Tesei in Annali di Matematica Pura ed Applicata
    Article 01 December 1977

  7. Social and Environmental Control of Reproductive Processes in Animals

    Sexual reproduction requires the coordination of two separate organisms with respect to each other and to the physical environment. If the...
    Norman T. Adler in Sex and Behavior
    Chapter 1978

  8. Attractivity for Non Autonomous Equations

    Proving attractivity or asymptotic stability is more difficult in the non autonomous case than in the autonomous one, because in the former, one...
    N. Rouche, P. Habets, M. Laloy in Stability Theory by Liapunov’s Direct Method
    Chapter 1977

  9. Asymptotic Stability Results for a System of Diffusion Equations

    We study a system of nonlinear parabolic equations arising in the theory of nuclear reactors. Under a condition on the coefficients, the (unique)...
    Alberto Tesei in Numerik und Anwendungen von Eigenwertaufgaben und Verzweigungsproblemen
    Chapter 1977

  10. The Connections Between Carabids and Biotic Factors in the Ecosystem

    A consideration of the ways in which carabids are linked with biotic factors in their ecosystem involves three questions:...
    Hans-Ulrich Thiele in Carabid Beetles in Their Environments
    Chapter 1977

  11. The Center Manifold Theorem

    In this section we will start to carry out the program outlined in Section 1 by proving the center manifold theorem. The general invariant manifold...
    J. E. Marsden, M. McCracken in The Hopf Bifurcation and Its Applications
    Chapter 1976

  12. The stability of continuous systems

    L. Salvadori, P. Villaggio, ... S. Rionero in Meccanica
    Article 01 December 1975

  14. Generalities

    The word “stability” originates in mechanics where it characterizes the equilibrium of a rigid body. The equilibrium is called stable if the body...
    Wolfgang Hahn in Stability of Motion
    Chapter 1967
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