Evaluating exemplary teaching     

Tom Chenoweth 《Journal of Personnel Evaluation in Education》1991,4(4):359-366

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VINITI RAN abstract database: Prospects of information postprocessing using methods of data analysis     

L. F. Borisova  O. V. Syuntyurenko 《Scientific and Technical Information Processing》2007,34(6):278-283

The All-Russian Institute of Scientific and Technical Information of the Russian Academy of Sciences (VINITI RAN) is active in the development of information and analysis technologies at a conceptual and practical level, using both its own and available domestic and foreign information resources. The aim of this paper is to describe (in the light of emerging trends in the institute) promising approaches to more in-depth information processing and analysis of available data, as well as to discuss the possibilities for creating new types of information products and services designed to support management decisions, not only in science and industry, but also, indirectly, in the economy as a whole.  相似文献   

Periodicals and proceedings in referral databases: Quantitative and qualitative estimations     

O. V. Kirillova 《Scientific and Technical Information Processing》2007,34(4):231-239

Using data from Ulrich’s Periodicals Directory, and the extent of coverage by abstract information resources and indices, the worldwide output of periodicals and proceedings (including those represented in electronic form) is studied. A quantitative characterization of the entire output of worldwide editions, as well as its abstracted portion is given. To provide complete reception of needed subject information and cover a maximum number of periodicals using an information system, a method for selecting several databases, which makes it possible to get a maximum coverage of primary sources with a certain amount of duplication, is proposed. Data on abstracting are obtained as the result of analyzing the input stream of approximately 700 databases and indices. Basic statistics for the abstracted stream are given for a number of companies: VINITI (All-Russia Institute for Scientific and Technical Information, Russian Academy of Sciences), CSA (Chemical Abstracts Service), Thomson Corporation, Elsevier, CABI Publishing, CAS (Cambridge Scientific Abstracts), and several others. A list of 25 of the largest abstract journals and referral databases, with respect to the number of periodicals represented in them, is given.  相似文献   

The architecture of a computerized information retrieval system: Technologies and aids of retrieving in documentary information resources     

E. N. Vasina  O. L. Golitsyna  N. V. Maksimov 《Scientific and Technical Information Processing》2007,34(3):117-130

In the context of system analysis, the architecture of a computerized information retrieval system adjusted to a support professional problem-oriented interactive documentary retrieving is considered. In addition to standard and extended retrieval capabilities, such a system must contain aids for generating and systematizing information files, generating and using components for linguistic support, and aids for estimating and analyzing the results of the retrieval.  相似文献   

Biomechanical loading in the triple jump     

Perttunen JO  Kyröläinen H  Komi PV  Heinonen A 《Journal of sports sciences》2000,18(5):363-370

The triple jump is a demanding field event in which a jumper must tolerate extremely high impact forces while maintaining high horizontal speed. The present study was designed to clarify the mechanical loading characteristics and the role of neuromuscular function in the triple jump. Seven national triple jumpers (4 males, 3 females) volunteered to perform 3-6 jumps. The mean best performances were 14.32+/-0.45 m and 11.90+/-0.28 m for males and females, respectively. The three longest triple jumps for each jumper were selected for final analysis. The mean contact times were 0.139 s (hop), 0.157 s (step) and 0.177 s (jump). The largest ground reaction forces were observed in the step (15.2 times body weight), while the highest peak pressures were recorded under the heel and forefoot. The plantar pressure of the lateral side of the forefoot was highly related to the length of the triple jump (P < 0.05-0.01). In addition, electromyograms of both legs Suggested that mechanical loading places high demands on the neuromuscular system, as characterized by the high rate of activation in the pre-activity phase followed by high eccentric activity. Thus, the high activities of the gastrocnemius, vastus lateralis and hip extensor muscles seem to play an important role in preventing unnecessary yielding of the jumper during the braking phase.  相似文献   

Protecting youth online: family use of filtering and blocking software     

Mitchell KJ  Finkelhor D  Wolak J 《Child abuse & neglect》2005,29(7):753-765

OBJECTIVE: This paper explores the characteristics associated with decisions to adopt or discontinue the use of filtering software, including a critical analysis of some explanations about why it is used or not used in households with children and adolescents. METHOD: This study consisted of a national telephone survey of households in the United States with youth (10 and 17 years) who use the Internet regularly. Interviews were completed with one youth in the appropriate age group and a parent or caretaker. RESULTS: Thirty-three percent of parents reported using filtering or blocking software, with an additional 5% having discontinued its use within the past year. Parents were more likely to adopt filtering software if they had younger children (10--15 years), a high level of concern about exposure to sexual material on the Internet, more extensive knowledge of what their child did online, low trust in the child's ability to use the Internet responsibly, and if the child used America Online (AOL). Using the Internet for school assignments was associated with not having filtering software. CONCLUSION: Findings suggest the need for (1) evaluation research of filter programs used in a real family context and (2) the development of a variety of strategies to prevent exposure to inappropriate material for youth of different ages.  相似文献   

The hospital user     

DUSSAULT E  ORTLEFF BI  GOODE OD 《Bulletin of the Medical Library Association》1956,44(1):57-64

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State Subsidies and Repertoire Conventionality in the Non-Profit English Theatre Sector: An Econometric Analysis     

John?O’Hagan  Adriana?NeliganEmail author 《Journal of Cultural Economics》2005,29(1):35-57

This paper examines the impact of financial and socio-economic factors on repertoire decisions of the grant-aided, non-profit theatre sector in England using cross-sectional regression analysis for the seasons 1996/97 to 1998/99. The dependent variable, a conventionality index, a variant of the DiMaggio/Stenberg conformity index, is calculated first. This shows a very considerable variation in repertoire conventionality, so measured, in the non-profit English theatre sector. A model is then constructed to assess the impact of the above-mentioned factors in determining variations in this index using a dataset hitherto not analysed in this way. The empirical results show that public subsidy, the size and the location of a theatre as well as the local average income have an impact on conventionality, which confirms existing empirical findings.  相似文献   

What Tests are Available? Where Can I Find Test Reviews? Where Can I Get a Bibliography on Testing?     

Marilyn Halpern  James V. Mitchell  Jr.  Barbara M. Wildemuth  Edward D. Roeber 《Educational Measurement》1982,1(4):20-21

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Abolishing the lecture     

John Fletcher  Tom Knott 《Higher Education Quarterly》1971,26(1):96-101

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