Search (1599 results, page 1 of 80)

  • × year_i:[1980 TO 1990}
  1. Malsburg, C. von der: ¬The correlation theory of brain function (1981) 0.06 
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    Abstract
    A summary of brain theory is given so far as it is contained within the framework of Localization Theory. Difficulties of this "conventional theory" are traced back to a specific deficiency: there is no way to express relations between active cells (as for instance their representing parts of the same object). A new theory is proposed to cure this deficiency. It introduces a new kind of dynamical control, termed synaptic modulation, according to which synapses switch between a conducting and a non- conducting state. The dynamics of this variable is controlled on a fast time scale by correlations in the temporal fine structure of cellular signals. Furthermore, conventional synaptic plasticity is replaced by a refined version. Synaptic modulation and plasticity form the basis for short-term and long-term memory, respectively. Signal correlations, shaped by the variable network, express structure and relationships within objects. In particular, the figure-ground problem may be solved in this way. Synaptic modulation introduces exibility into cerebral networks which is necessary to solve the invariance problem. Since momentarily useless connections are deactivated, interference between di erent memory traces can be reduced, and memory capacity increased, in comparison with conventional associative memory
    Content
    Originally published July 1981 as Internal Report 81-2, Dept. of Neurobiology, Max-Planck-Institute for Biophysical Chemistry, 3400 Gottingen, W.-Germany.
    Source
    http%3A%2F%2Fcogprints.org%2F1380%2F1%2FvdM_correlation.pdf&usg=AOvVaw0g7DvZbQPb2U7dYb49b9v_
  2. Kashyap, M.M.: Algorithms for analysis and representation of subject contents in a documentary language (1983) 0.05 
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    Source
    Library herald. 22(1983), S.1-29
  3. Piternick, A.B.: What's in a name? : use of names and titles in subject searching (1985) 0.05 
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    Source
    Database. 8(1985) no.4, S.22-28
  4. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.05 
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    Source
    Information processing and management. 22(1986), S.417-419
  5. Hill, J.S.: Online classification number access : some practical considerations (1984) 0.05 
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    Source
    Journal of academic librarianship. 10(1984), S.17-22
  6. Repo, A.J.: Economics and information (1987) 0.05 
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    Source
    Annual review of information science and technology. 22(1987), S.3-36
  7. Carroll, J.M.; Mack, R.L.: Metaphor, computing systems and active learning (1985) 0.05 
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    Source
    International journal of man-machine studies. 22(1985), S.39-57
  8. Belkin, N.J.; Croft, W.B.: Retrieval techniques (1987) 0.05 
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    Source
    Annual review of information science and technology. 22(1987), S.109-145
  9. Smith, L.C.: Artificial intelligence and information retrieval (1987) 0.05 
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    Source
    Annual review of information science and technology. 22(1987), S.41-77
  10. Warner, A.J.: Natural language processing (1987) 0.05 
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    Annual review of information science and technology. 22(1987), S.79-108
  11. Sukiasyan, E.: ¬The new state standard of the USSR : Sytematization of documents. General requirements (1987) 0.05 
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    Source
    International cataloguing. 16(1987), S.22-23
  12. Repo, A.J.: ¬The dual approach to the value of information : an appraisal of use and exchange values (1989) 0.05 
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    Source
    Information processing and management. 22(1986) no.5, S.373-383
  13. Dhyani, P.: Universe of subjects and DDC engineering (1987) 0.05 
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    Abstract
    The article examines the viability of various methods used by DDC for accommodating the universe of subjects. It also provides some suggestions for efficacious use of these methods
    Source
    International classification. 14(1987), S.19-22
  14. Martin, S.K.: ¬The union catalogue : summary and future directions (1982) 0.05 
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    Date
    6. 1.2007 14:49:22
    Footnote
    Simultaneously published as The Future of the Union Catalogue: Proceedings of the International Symposium on the Future of the Union Catalogue
  15. Pejtersen, A.M.: Design of a classification scheme for fiction based on an analysis of actual user-librarian communication, and use of the scheme for control of librarians' search strategies (1980) 0.04 
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    Date
    5. 8.2006 13:22:44
    Source
    Theory and application of information research. Proc. of the 2nd Int. Research Forum on Information Science, 3.-6.8.1977, Copenhagen. Ed.: O. Harbo u, L. Kajberg
  16. Su, M.-F.: On cataloging and classifying chinese history (1983) 0.04 
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    Abstract
    This article discusses the inadequate period divisions of Chinese history in LCSH and LCC. By studying cataloging and classification of Chinese history, the author also reveals the problems of expansion and revision of LCSH and LCC and of the lack of correspondence between LCSH and LCC.
    Date
    6. 1.2007 19:22:14
  17. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.04 
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    Date
    30. 3.2001 13:32:22
  18. Subject analysis: summary report of the racism and sexism in subject analysis subcommittee to the RTSD/CCS subject analysis committee (1981) 0.04 
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    Source
    RTSD newsletter. 6(1981), S.21-22
  19. Ingwersen, P.; Wormell, I.: Modern indexing and retrieval techniques matching different types of information needs (1989) 0.04 
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    Source
    International forum on information and documentation. 14(1989), S.17-22
  20. Falconer, J.: ¬The cataloguing and indexing of the photographic collection of the Royal Commonwealth Society (1984) 0.04 
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    Abstract
    Describes the history and scope of the Royal Commonwealth Society's photographic collection, the approach to and working methods of cataloguing and indexing it, and the particular problems involved in maintaining a photographic collection, especially those of identification, dating, and conservation
    Source
    Indexer. 14(1984), S.15-22

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