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991.
ISI数据库——学术期刊及网站的选择 总被引:6,自引:3,他引:3
James Testa 《中国科技期刊研究》2000,11(6):349-352
ISI(美国科学信息研究所)的基本任务是向其用户提供所需要的世界最重要、最有影响的期刊收录信息,ISI数据库不仅可以检索当年而且可追溯以往。现有数据库收录自然科学、社会科学、艺术与人文科学的国际期刊8500余种。ISI能完整地检索它所收录的任何一条文献数据。期刊的评估与选择是动态过程,每年ISI数据库的来源期刊都会有所增加或删减。每种期刊在被录用或被淘汰前都经过内容广泛的评估过程。ISI数据库期刊评估要考虑多种因素,评估范围从质到量标准不同,包括基本出版标准、学术内容、作者的国际化程度,及其与之相关的引文 相似文献
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Inspection of the 1972 revised norms for the Stanford-Binet demonstrate that the average mental age for a particular CA no longer numerically corresponds to that CA. Thus, mental ages derived from the test cannot any longer be interpreted as mental ages. A table of test ages based on the 1972 norms is provided. 相似文献
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Terese L.Chmielewski Justin Tatman Shuhei Suzuki MaryBeth Horodyski Darcy S.Reisman Russell M.Bauer James R.Clugston Daniel C.Herman 《运动与健康科学(英文)》2021,10(2):154-161
This review presents a conceptual framework and supporting evidence that links impaired motor control after sport-related concussion(SRC)to increased risk for musculoskeletal injury.Multiple studies have found that athletes who are post-SRC have higher risk for musculoskeletal injury compared to their counterparts.A small body of research suggests that impairments in motor control are associated with musculoskeletal injury risk.Motor control involves the perception and processing of sensory information and subsequent coordination of motor output within the central nervous system to perform a motor task.Motor control is inclusive of motor planning and motor learning.If sensory information is not accurately perceived or there is interference with sensory information processing and cognition,motor function will be altered,and an athlete may become vulnerable to injury during sport participation.Athletes with SRC show neuroanatomic and neurophysiological changes relevant to motor control even after meeting return to sport criteria,including a normal neurological examination,resolution of symptoms,and return to baseline function on traditional concussion testing.In conjunction,altered motor function is demonstrated after SRC in muscle activation and force production,movement patterns,balance/postural stability,and motor task performance,especially performance of a motor task paired with a cognitive task(i.e.,dual-task condition).The clinical implications of this conceptual framework include a need to intentionally address motor control impairments after SRC to mitigate musculoskeletal injury risk and to monitor motor control as the athlete progresses through the return to sport continuum. 相似文献
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Matthew K. Seeley Alyssa Evans-Pickett Gavin Q. Collins James B. Tracy Noelle J. Tuttle Parker G. Rosquist 《Journal of sports sciences》2020,38(16):1844-1858
ABSTRACT Running is a common exercise with numerous health benefits. Vertical ground reaction force (vGRF) influences running injury risk and running performance. Measurement of vGRF during running is now primarily constrained to a laboratory setting. The purpose of this study was to evaluate a new approach to measuring vGRF during running. This approach can be used outside of the laboratory and involves running shoes instrumented with novel piezoresponsive sensors and a standard accelerometer. Thirty-one individuals ran at three different speeds on a force-instrumented treadmill while wearing the instrumented running shoes. vGRF was predicted using data collected from the instrumented shoes, and predicted vGRF were compared to vGRF measured via the treadmill. Per cent error of the resulting predictions varied depending upon the predicted vGRF characteristic. Per cent error was relatively low for predicted vGRF impulse (2–7%), active peak vGRF (3–7%), and ground contact time (3–6%), but relatively high for predicted vGRF load rates (22–29%). These errors should decrease with future iterations of the instrumented shoes and collection of additional data from a more diverse sample. The novel technology described herein might become a feasible way to collect large amounts of vGRF data outside of the traditional biomechanics laboratory. 相似文献