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  • Articles  (231)
  • 2015-2019  (51)
  • 2005-2009  (48)
  • 2000-2004  (68)
  • 1985-1989  (64)
  • Mathematics  (215)
  • Information Science and Librarianship
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  • Articles  (231)
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  • 1
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    Association of coconut foliar spirality with latitude (1987)
    Elsevier
    Details
    Publication Date: 1987-01-01
    Print ISSN: 0270-0255
    Electronic ISSN: 1878-7231
    Topics: Mathematics
    Published by Elsevier
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Darwinian aspects of molecular evolution at sublinear propagation rates (2000)
    Springer
    Bulletin of mathematical biology 62 (2000), S. 1001-1001 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/bulm.2000.0204
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Darwinian aspects of molecular evolution at sublinear propagation rates (2000)
    Springer
    Bulletin of mathematical biology 62 (2000), S. 675-694 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Mean fitness is non-decreasing in the symmetry sector of the frequency trajectory followed in competitive replication at sublinear propagation rates (parabolic time course). This sector contains the pairwise symmetric distribution of species frequencies and its neighboring states, and represents at least half the possible states of an evolving sublinear system. States in the non-symmetry sector produce a negative rate of change in mean fitness. The heterogeneous steady state attained in a finite sublinear system is destabilized by formation of a variant with above-threshold fitness. Evolution in the post-steady-state interval elevates the fitness threshold for coexistence. Contrary to the proposition that ‘parabolic growth invariably results in the survival of all competing species’, only species with sufficient fitness to avoid subthreshold fitness survive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/bulm.2000.0173
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  • 4
    Electronic Resource
    Electronic Resource
    Partial match retrieval using recursive linear hashing (1985)
    Springer
    BIT 25 (1985), S. 477-484 
    Details
    ISSN: 1572-9125
    Keywords: partial match retrieval ; linear hashing ; dynamic files ; 3.74 ; 4.33 ; 4.34
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Recursive linear hashing is a hashing technique proposed for files which can grow and shrink dynamically. The scheme is an extension of linear hashing, a method originally proposed by Litwin, but unlike Litwin's scheme, it does not require conventional overflow pages. In this paper, we investigate the application of recursive linear hashing to partial match retrieval problems. Consistent with the results for primary key retrieval, recursive linear hashing performs better than the conventional scheme on these problems, especially at high load factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01935368
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  • 5
    Electronic Resource
    Electronic Resource
    Stability criteria for swirl flows with free surfaces (1986)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 37 (1986), S. 597-607 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Résumé Un écoulement tourbillonnaire admettant une surface libre est susceptible de présenter des instabilités du type centrifuge, capillaire et Rayleigh-Taylor. Notre travail étend les critères de stabilité obtenus par Rayleigh et Synge respectivement pour des fluides parfaits et visqueux aux cas des configurations à surface libre.
    Notes: Abstract A swirl flow with a free surface is susceptible to centrifugal, capillary, and Rayleigh-Taylor instabilities. The present work extends the stability criteria of Rayleigh and Synge for inviscid and viscous fluids, respectively, to free-surface configurations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00945432
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  • 6
    Electronic Resource
    Electronic Resource
    Combinations of parallel and sink flows at low reynolds number: Models for duct-bifurcation (1986)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 37 (1986), S. 651-665 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Zusammenfassung Explizite Lösungen und die Rotation des Geschwindigkeitsfeldes an den Wandoberflächen für Stokes-Strömungen durch ebene und axisymmetrische Kanäle werden angegeben. Der Einfluß einer Senke, — die einen Anteil der Durchströmmenge absorbiert —, in der Kanalwand wird berechnet.
    Notes: Abstract Explicit solutions and corresponding wall vorticities are calculated for Stokes flows in which a fraction of the flux of a plane or axisymmetric duct flow is forced to leave the duct via a wall sink.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00947913
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  • 7
    Electronic Resource
    Electronic Resource
    Semi-invariants in surgery (1987)
    Springer
    K-Theory 1 (1987), S. 83-109 
    Details
    ISSN: 1573-0514
    Keywords: Quadratic Poincaré complex ; cobordism ; semi-invariant ; surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract A semi-invariant in surgery is an invariant of a quadratic Poincaré complex which is defined in terms of a null-cobordism. We define five such gadgets: the semicharacteristic, the semitorsion, the cross semitorsion, the torsion semicharacteristic, and the cross torsion semicharacteristic. We describe applications to the evaluation of surgery obstructions, especially in the odd-dimensional case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00533988
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  • 8
    Electronic Resource
    Electronic Resource
    Tensor products and entropic varieties (1985)
    Springer
    Algebra universalis 21 (1985), S. 68-88 
    Details
    ISSN: 1420-8911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01187558
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  • 9
    Electronic Resource
    Electronic Resource
    Nitrogen Management in No-Tillage Grain Sorghum Production (2000)
    Springer
    Semigroup forum 92 (2000), S. 321-328 
    Details
    ISSN: 1432-2137
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Sorghum bicolor (L.) Moench] is grown in rotation with wheat (Triticum aestivum L.) and soybean [Glycine max (L.) Merr.] in the mid-Atlantic. Sufficient data on N fertilization of sorghum are not available for this region. Our objective was to evaluate the influence of multi-rate N fertilization on dryland sorghum. Treatments consisted of factorial combinations of four starter-band N rates (11, 34, 56, and 78 kg N ha−1) and four sidedress N rates (0, 45, 90, and 134 kg N ha−1). A broadcast treatment of 67 kg N ha−1 at planting was also included. Starter-band was applied 5 cm to the side and below the seed. Sidedress was applied 35 days after emergence at the eight-leaf growth stage. Grain yield ranged from 1.7 to 11.9 Mg ha−1 over eight site-years and was responsive and nonresponsive to N applications on four sites each. Nonresponsiveness was either due to high levels (〉85 kg N ha−1) of residual soil mineral N, or severe water stress conditions. Our results indicate that production of sorghum on soils testing high in mineral N (50 kg N ha−1 in the surface 0.3 m) at planting should not receive any starter-band N in conjunction with sidedress N application of 130 kg N ha−1 for optimum economic return to N fertilization. For soils testing low in mineral N, 40 kg N ha−1 starter-band in conjunction with 130 kg N ha−1 sidedress N should optimize the sorghum yields in most situations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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  • 10
    Electronic Resource
    Electronic Resource
    More Operator Versions of the Schwarz Inequality (2000)
    Springer
    Communications in mathematical physics 215 (2000), S. 239-244 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract: Some new operator versions of the Schwarz inequality are obtained. One of them is a counterpart of the variance-covariance inequality in the context of noncommutative probability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002200000289
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