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  • Springer  (176)
  • American Association for the Advancement of Science (AAAS)
  • 1985-1989  (173)
  • 1960-1964  (11)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Short-term consequences of different breeding histories for captive rhesus macaque mothers and young (1985)
    Springer
    Behavioral ecology and sociobiology 18 (1985), S. 83-89 
    Details
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Life histories of rhesus monkey mothers (Macaca mulatta) were classified in terms of (1) whether the mothers were top ranking or not, (2) gave birth to more daughters than sons or vice versa, and (3) gave birth at intervals of one year or of more than a year. Bearing daughters at intervals of more than a year was the most common history among top ranking mothers, while bearing sons annually was most common among other mothers. The consequences for the infants and mothers of such histories were examined and (1) infants were more likely to die as neonates if they had an older sister, especially if the sister had been born in the previous birth season; (2) dyads with daughters received more aggression from other adults in the daughter's first year, but not necessarily through the year following the birth of the next infant (3) when mothers of daughters gave birth of the next infant after at least one fallow year, their daughters directed considerable amounts of harassing aggression to their next-born sibling; and (4) mothers of sons but not of daughters delayed longer when they received more aggression from other adults. We discuss the views that birth sex ratios may be affected by a mother's rank rather than how often she is involved in aggressive encounters with other adults; and that in top-ranking mothers, birth intervals may be controlled more by the infant's sex than aggression the family received. Fitting the data into a life history strategy model is done as a provisional and speculative exercise
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00299036
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  • 2
    Electronic Resource
    Electronic Resource
    Limits to computation: The naive's guide to most of computing science! (1989)
    Springer
    AI & society 3 (1989), S. 234-246 
    Details
    ISSN: 1435-5655
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01891434
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  • 3
    Electronic Resource
    Electronic Resource
    A microcalorimetric determination of the thermodynamics of formation of the monoand bi-sulfato complexes of lanthanum in aqueous solutions between 25 and 55°C (1987)
    Springer
    Journal of solution chemistry 16 (1987), S. 411-417 
    Details
    ISSN: 1572-8927
    Keywords: Lanthanum sulfate complexes ; enthalpy ; formation constants ; microcalorimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Using a differential microcalorimeter, the formation constants and enthalpies of formation of the mono- and bi-sulfato complexes of lanthanum ion have been evaluated for aqueous acidic solutions over a temperature range of 25 to 55°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647187
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  • 4
    Electronic Resource
    Electronic Resource
    The respiratory metabolism of honey-bee colonies at low temperatures (1963)
    Springer
    Entomologia experimentalis et applicata 6 (1963), S. 234-238 
    Details
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Honigbienenvölker wurden im Winter aus ihren Stöcken genommen und in galvanisierten Eisenbehältern (Tanks) Temperaturen zwischen 20 und -39° C ausgesetzt. Das Kohlendioxyd der aus den Behältern abgesogenen Luft wurde absorbiert und gewogen. Die CO2-Produktion sank, wenn die Temperatur von 20 auf 10° erniedrigt wurde und stieg bei niederen Temperaturen wieder an. Diese Veränderungen verliefen in umgekehrter Richtung, wenn die Temperatur erhöht wurde.
    Notes: Abstract Honey-bee colonies exposed to temperatures between 20° C and -39° C produced less CO2 at 10° C than at higher or lower temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300529
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  • 5
    Electronic Resource
    Electronic Resource
    Corrections to Lee's visibility polygon algorithm (1987)
    Springer
    BIT 27 (1987), S. 458-473 
    Details
    ISSN: 1572-9125
    Keywords: F.2.2 ; computational geometry ; visibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We present a modification and extension of the (linear time) visibility polygon algorithm of Lee. The algorithm computes the visibility polygon of a simple polygon from a viewpoint that is either interior to the polygon, or in its blocked exterior (the cases of viewpoints on the boundary or in the free exterior being simple extensions of the interior case). We show by example that the original algorithm by Lee, and a more complex algorithm by El Gindy and Avis, can fail for polygons that wind sufficiently. We present a second version of the algorithm, which does not extend to the blocked exterior case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01937271
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  • 6
    Electronic Resource
    Electronic Resource
    A two time scale analysis of gyroscopic motion with friction (1986)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 37 (1986), S. 867-894 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Résumé On considère le mouvement d'un corps rigide symétrique ayant un point fixe et sujet à des forces de friction. Les forces de friction sont dues à un milieu dissipatif et sont représentées par un modèle où le moment de friction est proportionnel à la vitesse angulaire. On utilise une technique de perturbations à double échelle pour l'analyse et la charactérisation des mouvements possibles. On donne des résultats numériques illustrant certains de ces mouvements. Ces résultats sont en accord complet avec les observations qualitatives.
    Notes: Abstract The motion of a symmetric rigid body having one fixed point and subject to frictional forces is considered. The frictional forces are due to a surrounding dissipative medium and are accounted for by a model wherein the frictional torque is proportional to the angular velocity. A two time scale perturbation technique is used to analyze and characterize possible motions. The results of calculations which illustrate some of these motions are provided. These results show full agreement with qualitative observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00953678
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  • 7
    Electronic Resource
    Electronic Resource
    Absence of salivary invertase in queen and drone honeybees (1961)
    Springer
    Cellular and molecular life sciences 17 (1961), S. 365-365 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Untersuchungen an Mandibel-, Hinterkopf- und Thoraxdrüsen der Bienenkönigin sowie an Thoraxdrüsen der Drohne haben gezeigt, dass sie, verglichen mit den Hypopharynxdrüsen der Arbeiterin, nur sehr wenig oder gar keine Invertase enthalten. Da weder Königin noch Drohne an der Honigspeicherung teilnehmen, brauchen sie keine Speicheldrüsen-Invertase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02201765
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  • 8
    Electronic Resource
    Electronic Resource
    On the positivity of the second variation in finite elasticity (1987)
    Springer
    Archive for rational mechanics and analysis 98 (1987), S. 1-30 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00279960
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  • 9
    Electronic Resource
    Electronic Resource
    Necessary conditions at the boundary for minimizers in finite elasticity (1989)
    Springer
    Archive for rational mechanics and analysis 107 (1989), S. 105-125 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00286496
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  • 10
    Electronic Resource
    Electronic Resource
    Nichtbeweisbarkeit von gewissen kombinatorischen Eigenschaften endlicher Bäume (1985)
    Springer
    Archive for mathematical logic 25 (1985), S. 45-65 
    Details
    ISSN: 1432-0665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Description / Table of Contents: Zusammenfassung In der vorliegenden Arbeit stellen wir gewisse bis jetzt nicht veröffentlichte Forschungsergebnisse von Harvey Friedman vor. Diese Ergebnisse liefern die eindrucksvollsten bis jetzt gefundenen Beispiele von mathematisch bedeutsamen Sätzen der endlichen Kombinatorik, die in gewissen logischen Systemen nicht beweisbar sind. Die betroffenen logischen SystemeATR 0 und Π 1 1 —CA 0 sind als verhältnismäßig starke Teilsysteme der Arithmetik der zweiten Stufe bekannt. Die nicht beweisbaren kombinatorischen Sätze haben mit Einbettbarkeitseigenschaften endlicher Bäume zu tun. Friedmans Methode gründet sich zum Teil auf eine enge Verbindung zwischen endlichen Bäumen einerseits und den Ordinalzahlbezeichnungssystemen andererseits, die in der an Gentzen anknüpfenden Beweistheorie vorkommen.
    Notes: Abstract In this paper we exposit some as yet unpublished results of Harvey Friedman. These results provide the most dramatic examples so far known of mathematically meaningful theorems of finite combinatorics which are unprovable in certain logical systems. The relevant logical systems,ATR 0 and Π 1 1 —CA 0, are well known as relatively strong fragments of second order arithmetic. The unprovable combinatorial theorems are concerned with embeddability properties of finite trees. Friedman's method is based in part of the existence of a close relationship between finite trees on the one hand, and systems of ordinal notations which occur in Gentzen-style proof theory on the other.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02007556
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