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  • Articles: DFG German National Licenses  (5)
  • 1975-1979  (5)
  • 1975  (5)
Source
  • Articles: DFG German National Licenses  (5)
Material
Years
  • 1975-1979  (5)
Year
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 97 (1975), S. 583-591 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 97 (1975), S. 6137-6144 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical programming 8 (1975), S. 43-53 
    ISSN: 1436-4646
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract A break in a {0, 1}-matrix is defined as a 0 with at least one 1 to its left and at least one 1 to its right in the same row. This paper is concerned with {0, 1}-matrices with given column sums and an upper limit for the row sums. In addition, there are limits on the distance from the first to the last 1 in a row. The problem that is considered is to find a {0, 1}-matrix satisfying the conditions such that the total number of breaks is minimum. An algorithm for solving this problem is presented. Computational results illustrate the effectiveness of the algorithm. The investigation originated in a problem of crew rostering.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 22 (1975), S. 273-277 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The statistical weights of the stationary states in various ensembles of isotopically disordered harmonic chains are compared. It is proven that the ensemble defined by boundary conditions at both ends of the chain is constructed with correct statistical weights as follows: One matches at sitei the stationary states of the ensemble defined by the boundary condition at one end and frequencyω with those of the ensemble defined by the boundary condition at the other end andω. Finally one integrates overω and sums over all sitesi. This confirms and substantiates the conjecture on the exponential localization of the eigenstates in one dimension. The matching procedure yields an equation for the density of states.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of pest science 48 (1975), S. 177-179 
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Tests of side-effects of pesticide on beneficial arthropods and their incorporation into registration Simulated by the expences of integrated plant protection and based on the “plant protection law” of the Federal Republic of Germany, a German working group (directed by the Biologische Bundesansalt) since 1970 and an International (WPRS) Working Group since 1974 intiated a systematic study of side-effects of pesticides on beneficial (entomophagous) arthropods. The present status of this work is being reported which intends to obtain guide-lines for tests following standardized principles, which will allow, at first ona voluntary basis, acceptance os a test complementary to the protocol for registration as presently applied. This was officially started in the Fed, Rep. of Germany on October 1, 1975, covering, at first, 3 common and important species of entomophagous parasites (in the laboratory) and one field test developed for the surveys of the fauna of apple trees. Some details of the test, the evaluation of results, and the contributions of experts from member countries of WPRS/IOBC are reported upon. This complementary test, geared from the beginning at an international cooperation, will lesd in all co-operating countries to an enlarged basis for a correct assessment of the total impact of pesticides as it is needed for an effective applicaton of integrated plant protection.
    Type of Medium: Electronic Resource
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