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201.
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R J Markert A J Parisi H V Barnes S Cohen K Goldenberg L E Mieczkowski M Dunn R M Siervogel 《Bulletin of the Medical Library Association》1989,77(2):133-138
The experiences of medical students, residents, and faculty with a computerized literature searching system were evaluated. Third-year medical students, internal medicine and family practice residents, and full-time and voluntary faculty at one medical school had the opportunity to use a full-text and bibliographic medical literature retrieval system free of charge for an eleven-month period. Subjects conducted nearly nine thousand literature searches over a period of 942 system hours. Questionnaire data showed that participants could learn to use and would use an electronic information system, felt capable of using the system, utilized the system for a variety of purposes and in a number of different ways, and viewed the system as a valuable tool in searching the medical literature. The results are discussed in the context of the educational needs of the four user-groups and medical education planning by institutions. 相似文献
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204.
Cinema Demand in Spain: A Cointegration Analysis 总被引:4,自引:3,他引:1
In this paper we explain the decline in cinema attendance in Spain since 1968. We use a cointegration analysis to estimate
an individual demand function for cinema, with annual data and in terms of average attendance per inhabitant. We find that
cinema is a luxury good and that its demand is elastic with respect to its price. We also show that television acts as a deterrent
with regard to cinema attendance.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
205.
206.
Antriman V. Orleans 《The Australian Educational Researcher》2007,34(1):33-54
This study is aimed at assessing the state of Philippine secondary school physics education using data from a nationwide survey
of 464 schools and 767 physics teachers and at identifying challenges for substantive improvements. Teacher-related indicators
revealed academic qualification deficiency, low continuing professional involvements, substantial physics teaching experience,
and good licensure status. Academic environment indices revealed that the number of physics classes per teacher is manageable,
but the individual classes are large. Results also showed limited instructional materials and technologies, the unpopularity
of professional mentoring, and favorable library and internet access. Based on these findings, challenges to developing a
larger pool of competent physics teachers and equipping schools with relevant instructional devices were identified. 相似文献
207.
208.
Neuromuscular, metabolic and hormonal profiles of young tennis players and untrained boys 总被引:2,自引:1,他引:1
This study compared the neuromuscular, metabolic and hormonal profiles of trained prepubescent tennis players and an untrained group. The boys in the experimental group (n = 9; mean age +/- S.D. = 11.4 +/- 0.5 years) had participated in tennis training for 2.3 +/- 1.0 years and the boys in the control group (n = 9; mean age +/- S.D. = 10.9 +/- 0.4 years) were normal active volunteers. The tennis players were found to be physically more active than the controls when the comparison was made for either 1 year (4.9 +/- 1.8 vs 2.6 +/- 2.5 times per week; P less than 0.05) or for 1 week (3.4 +/- 1.2 vs 0.4 +/- 0.5 times; P less than 0.001) preceding the tests. Choice reaction time was significantly (P less than 0.01) shorter in the experimental group (258 +/- 16 ms) than in the control group (344 +/- 81 ms). Dropping height in the best drop jump was significantly (P less than 0.05) higher in the tennis players (0.46 +/- 0.19 m) than in the control boys (0.27 +/- 0.10 m). The tennis players had significantly lower oxygen consumption at the 'anaerobic threshold' than the controls (P less than 0.05). There were no significant differences between the groups in serum hormone levels. The small differences that existed may have been caused by active participation in sport by the tennis players. 相似文献
209.
210.
V. M. Efremenkova 《Scientific and Technical Information Processing》2007,34(4):219-230
This paper offers structural schemes for the search and analysis of scientific and technical information in various fields of knowledge. Data on the statistical analysis and dynamics of the distribution of publications permit one to reveal a number of indicators characterizing the state of research in a certain field and separate the growth-points of scientific research, as well as means for practical application of the data obtained. 相似文献