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  • semantic networks  (1)
  • subcellular fractions  (1)
  • Springer  (2)
  • Frankfurt: Campus-Verl.
  • Frontiers Media
  • Wiley
  • ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften, Leibniz-Informationszentrum Wirtschaft Kiel, Hamburg
  • 1990-1994  (2)
Collection
Keywords
Publisher
  • Springer  (2)
  • Frankfurt: Campus-Verl.
  • Frontiers Media
  • Wiley
  • ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften, Leibniz-Informationszentrum Wirtschaft Kiel, Hamburg
Years
  • 1990-1994  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Frame-based representation of philosophical systems using a knowledge engineering tool (1993)
    Springer
    Computers and the humanities 27 (1993), S. 261-275 
    Details
    ISSN: 1572-8412
    Keywords: conceptual analysis ; knowledge representation ; knowledge engineering ; semantic networks ; text analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Media Resources and Communication Sciences, Journalism
    Notes: Abstract This article addresses the methodological problem of the non-linear representation of philosophical systems in a computerized knowledge base. It is a problem of knowledge representation as defined in the field of artificial intelligence. Instead of a purely theoretical discussion of the issue, we present selected results of a practical experiment which has in itself some theoretical significance. We show how one can represent different philosophies using CODE, a knowledge engineering system developed by artificial intelligence researchers. The hypothesis is that such a computer based representation of philosophical systems can give insight into their conceptual structure. We argue that computer aided text analysis can apply knowledge representation tools and techniques developed in artificial intelligence and we estimate how philosophers as well as knowledge engineers could gain from this cross-fertilization. This paper should be considered as an experiment report on the use of knowledge representation techniques in computer aided text analysis. It is part of a much broader project on the representation of conceptual structures in an expert system. However, we intentionally avoided technical issues related to either Computer Science or History of Philosophy to focus on the benefit to enhance traditional humanistic studies with tools and methods developed in AI on the one hand and the need to develop more appropriate tools on the other.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01830368
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure–Metabolism Relationships in the Hydrolysis of Nicotinate Esters by Rat Liver and Brain Subcellular Fractions (1991)
    Springer
    Pharmaceutical research 8 (1991), S. 832-839 
    Details
    ISSN: 1573-904X
    Keywords: nicotinic acid esters ; carboxylesterases ; subcellular fractions ; structure–metabolism relationships
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Rat liver and brain subcellular esterase activities toward nicotinic acid esters were studied, under varying conditions, such as pH, organic solvents, protein concentration, duration of incubation, and substrate concentration. Esterases in each subcellular fraction displayed activities that obey Michaelis–Menten kinetics, although subcellular fractions are heterogeneous. The K m values were of the same magnitude, and the V max values were lower in microsomes than in cytosol of the liver. Brain activities normalized to protein concentration, were much lower than liver activities, aromatic nicotinates being the best substrates in both tissues. Myelin and brain mitochondria of nerve-ending and neuroglial origin display esterase activity toward phenyl nicotinate. In contrast to brain esterases, liver esterases appear homogeneous, and esterase activities in both tissues react differently to changes in pH. Qualitative and quantitative structure–metabolism relationships are not suggestive of tissue-specific ester hydrolysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1015839109449
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    Paper (German National Licenses)
    Fulltext
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