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  • Springer  (2)
  • 1995-1999
  • 1985-1989  (2)
  • 1986  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Conditioning honeybees to discriminate between heritable odors from full and half sisters (1986)
    Springer
    Journal of comparative physiology 159 (1986), S. 251-256 
    Details
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Differential conditioning of the proboscis extension reflex in honeybees is used to assess whether worker honeybees can be trained to discriminate between volatile odors emanating from different kin groups consisting of 2 or 20 workers. These odor source group workers are all reared and maintained under identical environmental conditions. They are the progeny of a queen that has been instrumentally inseminated so that eclosing adult workers can be sorted into colormorph full sister patrilines (workers are half sisters across patrilines). We demonstrate that workers are able to discriminate between the odors from groups of 20 individuals only if the groups represent individuals from different patrilines. However, discrimination occurs between groups of 2 individuals even if groups do not represent different patrilines. A number of environmental control experiments are also conducted. From our results we infer that there is heritable variation in the production of volatile odors by worker honeybees at a level that can be detected by the workers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612307
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  • 2
    Electronic Resource
    Electronic Resource
    Validity and reliability of biostereometric measurement of the human female breast (1986)
    Springer
    Annals of biomedical engineering 14 (1986), S. 1-14 
    Details
    ISSN: 1573-9686
    Keywords: Stereophotogrammetry ; Validity ; Reliability ; Breast volume
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract A measurement technique has been developed for application in the area of noninvasive breast cancer detection. The measurement process involves the use of closerange stereophotogrammetry as a data acquisition device necessary for determination of breast volume and volume distribution. This report details the methodology used to acquire and analyze stereopair photographs necessary to document the validity and reliability of this application. The volume of a test object was determined by both water displacement and stereophotogrammetric analysis to estimate the precision of the proposed methodology. Additionally, the reliability component of the study was documented by analyzing variability of coordinates representing a series of locations marked on the surface of an irregularly shaped object. Both tests confirm that this stereometric analysis is a reliable and valid method of measurement and may be well suited for further development in the field of breast cancer detection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02364645
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    Paper (German National Licenses)
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