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161.
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Sheila Egoff 《International Information and Library Review》2013,45(3):265-279
AbstractIn Great Britain and the United States common developmental issues have resulted in the evolution of two very different models of school library provision. In the United States, school libraries are integrated media centers, separate from public library influence, staffed by specialists with dual training in teaching and librarianship, and dedicated to an educational mission. British school libraries are contested terrain with two patterns of staffing, support by Public Library Services, and incomplete formulation of mission and rationale. This article discusses five factors which have facilitated or retarded school library development in the two countries (standards, staffing and certification, government support, rationale, professionalization) and generalizes about development factors and the successful promotion of school libraries. 相似文献
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Dominique D. Gagnon Juha E. Peltonen Hannu Rintamäki Sheila S. Gagnon Karl-Heinz Herzig Heikki Kyröläinen 《Journal of sports sciences》2017,35(20):1995-2004
Skin and core tissue cooling modulates skeletal muscle oxygenation at rest. Whether tissue cooling also influences the skeletal muscle deoxygenation response during exercise is unclear. We evaluated the effects of skin and core tissue cooling on skeletal muscle blood volume and deoxygenation during sustained walking and running. Eleven male participants walked or ran six times on a treadmill for 60 min in ambient temperatures of 22°C (Neutral), 0°C for skin cooling (Cold 1), and at 0°C following a core and skin cooling protocol (Cold 2). Difference between oxy/deoxygenated haemoglobin ([diffHb]: deoxygenation index) and total haemoglobin content ([tHb]: total blood volume) in the vastus lateralis (VL) muscle was measured continuously. During walking, lower [tHb] was observed at 1 min in Cold 1 and Cold 2 vs. Neutral (P?0.05). Lower [diffHb] was seen at 1 and 10 min in Cold 2 vs. Neutral by 13.5 ± 1.2 µM and 15.3 ± 1.4 µM and Cold 1 by 10.4 ± 3.1 µM and 11.1 ± 4.1 µM, respectively (P?0.05). During running, [tHb] was lower in Cold 2 vs. Neutral at 10 min only (P = 0.004). [diffHb] was lower at 1 min in Cold 2 by 11.3 ± 3.1 µM compared to Neutral and by 13.5 ± 2.8 µM compared to Cold 1 (P?0.001). Core tissue cooling, prior to exercise, induced greater deoxygenation of the VL muscle during the early stages of exercise, irrespective of changes in blood volume. Skin cooling alone, however, did not influence deoxygenation of the VL during exercise. 相似文献
166.
S Bennett C Button D Kingsbury K Davids 《Research quarterly for exercise and sport》1999,70(3):220-232
Previous motor learning studies examining the effects of practicing to catch one-handed under varying informational constraints on subsequent skill acquisition are equivocal, perhaps due to the use of relatively inexperienced adult participants. Ecological theory predicts that directing the learner's search for information in the perceptual-motor workspace can enhance skill acquisition. This study manipulated visual informational constraints on novice children (ages 9-10 years) learning to catch one-handed. A crossover transfer design was implemented in which one group acted as controls while two other groups practiced either without visual restrictions before transferring to full vision, or vice versa. The data indicated that learners forced to seek additional information sources under restricted viewing conditions demonstrated a greater positive, accumulative residual effect on acquiring a catching skill. The findings contradict current work on the specificity of practice hypothesis and suggest that varying visual informational constraints to encourage exploratory practice may represent a significant pedagogical approach to motor learning in sport. 相似文献
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We address the question of the quality of movies produced between 1950 and 1970. A first outcome of our analysis is that the quality assessments made during the Cannes Festival, and to a lesser degree, by the U.S. Academy are short-lasting. In contrast to this, consumers seem consistent over time. There is, however, one issue on which experts agree as well as consumers: American movies dominate both in terms of commercial success and in terms of quality. There is less agreement, and sometimes there is even dissent concerning other dimensions. This does not come as a surprise and merely indicates that there is hardly a common yardstick along which the quality of a movie can be measured. Therefore, decomposing a work of art into quantifiable characteristics – even in a subjective but possibly unanimous way – would make it possible to explain the divergences between audiences and changes of appreciation over time. 相似文献
169.
Attendant to the changing profile of the labor pool are shifts in norms and expectations that complicate worker recruitment, hiring, and retention. As labor pool, economic, and organizational characteristics change, two issues emerge: first, the growing need to efficiently coordinate available workers with the work that needs to be done, and second, strategies for organizations to use need to be developed. Leontiefs Input/Output Theory has been used to illustrate issues related to coordination of labor, and two pre-employment tests have been studied to determine the effectiveness of pre-employment testing strategies. Pre-employment test scores obtained in an expanding contract electronics manufacturing firm have been analyzed to determine the relationships that may exist between test scores and employee success. Success has been defined as performance and retention. Multiple regression and discriminant analyses revealed several statistically significant results, including a relationship between Working Safety-test scores and performance, and Job Candidate Profile scores and retention. While interesting in and of themselves, the results further suggest that variables exist, other than those studied, that arc important to the selection of successful employees. 相似文献
170.
虚拟国际规范文档——连接德国国家图书馆和美国国会图书馆的规范文档 总被引:2,自引:0,他引:2
德国国家图书馆、美国国会图书馆和OCLC联机计算机图书馆中心联合开发了一个个人名称的虚拟国际规范文档(VIAF),它连接世界各国国家书目机构的规范记录,并免费提供网上检索,以证明自动连接不同国家规范文档的规范记录的可行性和优点.美国国会图书馆和德国国家图书馆的规范文档和书目文档被用来创建初始的VIAF,其中包括600多万个名称和50多万个连接.该项目的一个关键点是利用规范记录和其对应书目记录的信息开发自动名称匹配算法.该项目显示了用算法建立不同国家规范文档的个人名称之间连接的实用性.VIAF项目的长远目标是将许多国家图书馆和其他重要来源的规范名称结合起来,形成一个共享的全球规范服务.参考文献3. 相似文献