840 resultados para COMMUNICATION AND INFORMATION


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The recent surge in scientific electronic journals began when libraries began having access to the WWW in the mid-1990s. The shift from paper to digital has affected the traditional alignment and role of the primary "stakeholders" -mainly authors, publishers, universities and libraries. The author offers a brief review of the history of the scholarly journal followed by the evolution of e-journals in during the past two decades. The article then focuses on the implications that these have had on traditional library processes and services such as selection, acquisitions, cataloguing, storage, preservation and user services. In the conclusion the author speculates on the long term effect of Web-based publishing on the format of the traditional scholarly journal as it has existed for over 300 years.

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Selostus: Kestävän kehityksen integroidun tutkimuksen ja verkostotalouden teorian tutkimusmenetelmälliset ongelmat

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Naive scale invariance is not a true property of natural images. Natural monochrome images possess a much richer geometrical structure, which is particularly well described in terms of multiscaling relations. This means that the pixels of a given image can be decomposed into sets, the fractal components of the image, with well-defined scaling exponents [Turiel and Parga, Neural Comput. 12, 763 (2000)]. Here it is shown that hyperspectral representations of natural scenes also exhibit multiscaling properties, observing the same kind of behavior. A precise measure of the informational relevance of the fractal components is also given, and it is shown that there are important differences between the intrinsically redundant red-green-blue system and the decorrelated one defined in Ruderman, Cronin, and Chiao [J. Opt. Soc. Am. A 15, 2036 (1998)].

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.

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Newsletter from the University of Iowa School of Library and Information Science.