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  • 1
    Electronic Resource
    Electronic Resource
    The asymptotic behaviour of the number of three-connected triangulations of the disk, with a reflective symmetry in a line (1992)
    Springer
    Combinatorica 12 (1992), S. 149-153 
    Details
    ISSN: 1439-6912
    Keywords: 05 C 30 ; 05 A 15 ; 05 C 10 ; 57 M 99
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We consider the enumeration of the three-connected triangulations of the disk, with a reflective symmetry about a line. The asymptotic behavior is unlike that observed for rooted maps or for maps having rotational symmetry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01204718
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On graphical partitions (1993)
    Springer
    Combinatorica 13 (1993), S. 57-63 
    Details
    ISSN: 1439-6912
    Keywords: 10 J 20 ; 05 C 99
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract An integer partition {λ1,λ2,...,λ v } is said to be graphical if there exists a graph with degree sequence 〈λ i 〉. We give some results corcerning the problem of deciding whether or not almost all partitions of even integer are non-graphical. We also give asymptotic estimates for the number of partitions with given rank.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01202789
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Asymptotic expansions for the coefficients of analytic generating functions (1985)
    Springer
    Aequationes mathematicae 28 (1985), S. 50-63 
    Details
    ISSN: 1420-8903
    Keywords: Primary 05A20, 41A60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract PairsF(x), G(x) of analytic generating functions that satisfy relations such as 1+G(x)=exp(F(x)) are studied. It is shown that, ifF(x) satisfies fairly mild regularity conditions, such as those imposed by Hayman in his study of coefficients of some general classes of functions, thenG(x) satisfies the much stricter conditions imposed by Harris and Schoenfeld. This enables one to obtain complete asymptotic expansions for the coefficients ofG(x). Applications of this result are made to enumerations of trees.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02189391
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Snail (Helix aspersa) exposure history and possible adaptation to lead as reflected in shell composition (1994)
    Springer
    Archives of environmental contamination and toxicology 27 (1994), S. 346-351 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Lead sequestration in shell was examined for English and Welsh populations of the common garden snail (Helix aspersa) with different Pb exposure histories. Isotopic Pb ratios provided signatures for Pb source and a means of implying duration of population exposure from decades to millennia. Total Pb concentrations were used to quantify the intensity of exposure experienced by the populations. Snails from populations with long histories of exposure (millennia) to high Pb levels had proportionately more Pb in their shell than soft tissue compared with snails from other surveyed populations. These observations suggest that Pb sequestration in shell has been enhanced in H. aspersa populations with long and intense exposure to Pb.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00213170
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Non-Farm Rural Ontario Residents’ Perceived Quality of Life (2000)
    Springer
    Social indicators research 50 (2000), S. 159-186 
    Details
    ISSN: 1573-0921
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology
    Notes: Abstract This paper presents a study of Ontario non-farm ruralresidents’ perceived quality of life. The researchsought to understand residents’ perceived quality oflife both in absolute and relative terms. Measurementfocused on indicators of satisfaction with personallife, community and environment and quality of life incomparison to others. A pre-tested questionnaire wasmailed to a random sample of non-farm rural residentsin Brock and Uxbridge Townships, which lie within onehour’s drive northeast of metropolitan Toronto. Nearly forty-two (41.8) percent of the residentsreturned completed questionnaires. The majority ofrespondents indicated they were satisfied with mostaspects of the quality of their lives. The demographiccharacteristics that were consistently found to havesignificant associations with indicators of absolutequality of life and relative quality of life wereincome, length of residency, presence or number ofchildren in the home and township. Other demographiccharacteristics almost as consistently found to besignificantly associated with indicators of absoluteand relative quality of life were gender, followed byage, marital status, amount of land surrounding thehome and education. Comparing objectively-baseddemographic characteristics and more subjectivelyderived indicators of absolute and relative quality oflife provided a useful way of understanding quality oflife perceptions of Ontario rural non-farmresidents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007043530451
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    Paper (German National Licenses)
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