Performance Measurement: can you manage without it? Library and Information Research Group Conference, 18–20 November 1988, Manchester.     

John van Loo 《Health information and libraries journal》1989,6(2):95-96

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Les Effets de Coopération et de Feedback par les Compagnons de Classe sur la Performance Orthographique     

van Oudenhoven  Jean Pieter  Wiersema  Bert 《European Journal of Psychology of Education - EJPE》1988,3(1):153-156

European Journal of Psychology of Education -  相似文献   

GATT and Beyond: World Trade,the Arts and American Popular Culture in Western Europe     

Mel van Elteren 《Journal of American culture (Malden, Mass. : 2003)》1996,19(3):59-73

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Transitional study programmes at the distance teaching University of South Africa: a continuing experiment     

Ben S. van As 《Distance Education》1985,6(2):223-234

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Measurement of active drag during crawl arm stroke swimming   总被引：2，自引：0，他引：2  

A P Hollander  G De Groot  G J van Ingen Schenau  H M Toussaint  H De Best  W Peeters  A Meulemans  A W Schreurs 《Journal of sports sciences》1986,4(1):21-30

In order to measure active drag during front crawl swimming a system has been designed, built and tested. A tube (23 m long) with grips is fixed under the water surface and the swimmer crawls on this. At one end of the tube, a force transducer is attached to the wall of the swimming pool. It measures the momentary effective propulsive forces of the hands. During the measurements the subjects' legs are fixed together and supported by a buoy. After filtering and digitizing the electrical force signal, the mean propulsive force over one lane at constant speeds (ranging from about 1 to 2 m s-1) was calculated. The regression equation of the force on the speed turned out to be almost quadratic. At a mean speed of 1.55 m s-1 the mean force was 66.3 N. The accuracy of this force measured on one subject at different days was 4.1 N. The observed force, which is equal to the mean drag force, fits remarkably well with passive drag force values as well as with values calculated for propulsive forces during actual swimming reported in the literature. The use of the system does not interfere to any large extent with normal front crawl swimming; this conclusion is based on results of observations of film by skilled swim coaches. It was concluded that the system provides a good method of studying active drag and its relation to anthropometric variables and swimming technique.  相似文献   

In‐service teacher education in the Cape Teachers’ Professional Association: educational innovation in apartheid society     

Owen van den Berg  Melanie Todes 《Cambridge Journal of Education》1986,16(3):163-170

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Communication management in the public sector: Consequences for public communication about policy intentions     

Dave Gelders  Geert Bouckaert  Betteke van Ruler 《Government Information Quarterly》2007

Public communication about policy intentions is important but delicate. Government officials are confronted with four main constraints typical of the public sector compared to the private sector: more complicated and unstable environment, additional legal and formal restrictions, more rigid procedures, and more diverse products and objectives. These constraints imply that ministers communicating about policy intentions face specific communication issues such as intensive political and media interferences, need for democratic communication, and more rigid timing and budget constraints.  相似文献   

Resistance and support to electronic government,building a model of innovation     

W.E. Ebbers  J.A.G.M. van DijkAuthor Vitae 《Government Information Quarterly》2007

In several countries forces that resist e-government innovations apparently override those that support them. A first step is taken in order to identify organizational processes of resistance and support to e-government innovations. A multi-disciplinary and non-linear innovation model is proposed that is inspired by the Minnesota Innovation Research Program's Innovation Pathway-model. The proposed model grasps the whole process of adoption and implementation of e-government services. Observable indicators of resistance and support on the complete innovation pathway of electronic government are derived from the proposed model. Future research will have to conceptually refine and empirically test both model and indicators.  相似文献   

The bridge-year: An aid to adaptation from elementary to secondary education in the Netherlands     

L. van Gelder 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1960,6(1):468-471

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The selection of good search terms     

C.J. van Rijsbergen  D.J. Harper  M.F. Porter 《Information processing & management》1981,17(2):77-91

This paper tackles the problem of how one might select further search terms, using relevance feedback, given the search terms in the query. These search terms are extracted from a maximum spanning tree connecting all the terms in the index term vocabulary. A number of different spanning trees are generated from a variety of association measures. The retrieval effectiveness for the different spanning trees is shown to be approximately the same. Effectiveness is measured in terms of precision and recall, and the retrieval tests are done on three different test collections.  相似文献