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  • Actin gene  (1)
  • learning theory  (1)
  • 1990-1994  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal for general philosophy of science 24 (1993), S. 275-292 
    ISSN: 1572-8587
    Keywords: utility theory ; learning theory ; inter-theoretical-relation ; theory-comparison ; theoretical idealization ; theory approximation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Summary Behaviourist Learning Theory and Utility Theory. Comparisons between theories are rare, especially in social theory which is believed to be a “multi-paradigmatic” science. Against this prevailing impression it is shown that there are logically reconstructable inter-theory-relations at least between different basic theories of individual action. Following Wladyslaw Krajewski a formal model of theory-approximation is developed and applied to behaviourist learning theory and utility theory. Comparing both theories leads to the result that the latter has to be preferred to Behaviourism. That utility theory has a richer content than learning theory helps to explain why George Caspar Homans explanatory programme which leans on a Skinnerian version of learning theory finally did not succeed in becoming the leading approach in social science.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-041X
    Keywords: Antisense RNA ; BPV ; Episomal expression vector ; Actin gene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An expression vector was constructed containing the entire bovine papilloma virus (BPV-1) genome and part of the a-actin gene of Xenopus laevis cloned in the antisense orientation into the neomycin resistance gene under the control of the herpes simplex virus (HSV) thymidine kinase (TK) promoter. When this vector is microinjected into X. laevis embryos it replicates extrachromosomally, at least up to the tadpole stage, and a fusion RNA is synthesized after the mid blastula transition (MBT). The expression of the antisense gene results in a morphological abnormality of somites demonstrating that antisense RNA generated by an episomal replicating expression vector can inhibit the expression of a selected gene during early embryogenesis of X. laevis.
    Type of Medium: Electronic Resource
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