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  • 1990-1994  (3)
  • 1
    Electronic Resource
    Electronic Resource
    An ac impedance study of the fractal geometry of silver films electrodeposited within a polymer matrix (1990)
    Springer
    Journal of applied electrochemistry 20 (1990), S. 23-25 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Silver films (∼10−6m) have been electrodeposited within a polymer matrix (∼10−5 m) of polyvinylidene fluoride trifluoroethylene copolymer 60-40 cast on the surface of a stainless steel electrode. It is shown that the fractal geometry of the polymer-metal interface, which is not open to direct observation, can be characterized by means of ac impedance measurements made on the electrode in acetonitrile solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012466
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Detection of water quality changes along a river system (1992)
    Springer
    Environmental monitoring and assessment 23 (1992), S. 219-242 
    Details
    ISSN: 1573-2959
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Water quality monitoring networks are generally multi-purpose, and thus the data generated are expected to provide information on a set of objectives. Two questions that are fundamental to these objectives are the detection of long term trends and of differences between locations. The extent to which these questions can be answered and the types of statistical methods which can be used are considered in a case study of conventional parameters sampled monthly for nine years. Regression and nonparametric methods, which explicitly account for seasonality, are compared for both the determination of change over time and of differences between locations. Changes over time in the form of step changes and differences between locations which depend upon season were found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00406963
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    What are the consequences? Reflections on the impact of evaluations conducted by a science policy advisory body (1990)
    Springer
    Scientometrics 19 (1990), S. 427-437 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract This article briefly presents some of theWissenschaftsrat's recent activities which were (and are) particularly designed to exert an influence on the structural development of German universities,Fachhochschulen and research institutes: Evaluations of research institutes, recommendations on structural changes in the higher education system, and statistics concerning the age structure of professors and the employment prospects for young academics. The focal point will be the question: What has been the impact of the reports and recommendations on higher education and research policies?
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020705
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    Paper (German National Licenses)
    Fulltext
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