全文获取类型
收费全文 | 339篇 |
免费 | 4篇 |
专业分类
教育 | 236篇 |
科学研究 | 24篇 |
各国文化 | 1篇 |
体育 | 67篇 |
信息传播 | 15篇 |
出版年
2022年 | 2篇 |
2020年 | 5篇 |
2019年 | 11篇 |
2018年 | 15篇 |
2017年 | 14篇 |
2016年 | 11篇 |
2015年 | 3篇 |
2014年 | 8篇 |
2013年 | 92篇 |
2012年 | 6篇 |
2011年 | 3篇 |
2010年 | 6篇 |
2009年 | 6篇 |
2008年 | 6篇 |
2007年 | 6篇 |
2006年 | 7篇 |
2005年 | 9篇 |
2004年 | 7篇 |
2003年 | 9篇 |
2002年 | 10篇 |
2001年 | 5篇 |
2000年 | 10篇 |
1999年 | 4篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 8篇 |
1992年 | 9篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1988年 | 3篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 4篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1973年 | 3篇 |
1971年 | 4篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1939年 | 1篇 |
1933年 | 1篇 |
1925年 | 1篇 |
1924年 | 3篇 |
1923年 | 2篇 |
1921年 | 3篇 |
1919年 | 1篇 |
排序方式: 共有343条查询结果,搜索用时 156 毫秒
1.
2.
Elliott CA 《美国档案工作者》1994,57(3):448-460
This paper explores surviving documentation and what it reveals about the underlying social structure and relations in a historic time and place. The mid-nineteenth century is chosen as a period prior to modern bureaucracies so that documents are not found in defining filing systems. Some six hundred documents are studied individually and characterized collectively. They are examined not to tell a story, however, but for evidence of their creation and maintenance and of their physical types, functional characteristics, and relations between authors and recipients. The study reveals the fruitfulness of such an orientation to documents, which complements traditional historical uses that emphasize document content. 相似文献
3.
4.
This article is a conceptual one designed to start dialogue on educational issues that are unfolding amidst the changes in other sectors of our society such as production, services, and recreation. We first present an overview of the fundamental but profound changes evidenced in our society and then discuss the nature of these changes and their impact on human ability to function effectively within such an environment. In light of the complexities such as uncertainties and dualistic/multiple perspectives and incongruities, we propose that a model for pedagogy and curriculum development should adopt critical thinking as the key attribute—because it has the potential to deliver an education system for the new world order. 相似文献
5.
Differential Grading Standards Revisited 总被引:2,自引:0,他引:2
The differential grading standards described by Goldman and Widawski (1976) exist in the same magnitude and in roughly the same order a decade later in a different kind of institution. Major fields that attract as majors students who score higher on SATs employ stricter grading standards. These differential grading standards serve to attenuate the correlation between SAT scores and grades, which is, even in highly selective institutions, substantial. 相似文献
6.
Comparison of force-related performance indicators between heavyweight and lightweight rowers 总被引:1,自引:0,他引:1
Doyle MM Lyttle A Elliott B 《Sports biomechanics / International Society of Biomechanics in Sports》2010,9(3):178-192
The aim of this study was to examine biomechanical variables relating to the force production of men's Lightweight (LW) and Heavyweight (HW) rowing pairs. Seven HW and seven LW coxless pairs were studied under a range of stroke rates, from 20 spm to race rating (average of 33.7 spm for the HWs and 33.9 spm for the LWs). Each crew was equipped with biomechanical apparatus allowing the measurement of gate force, horizontal oar angle, and boat velocity. The HW crews exhibited significantly higher (p < 0.05) values for all variables examined, at all rates. Peak handle force was 26.2% to 30.2% higher in the HW group. Average handle force ranged from 18.7% to 22.1% higher than the LW group. Work per stroke was found to be 26% to 28% higher for the HW crews, and Power Per Kilogram was also greater for the HW crews, from 24.0% to 29.2%. The LWs were observed to be consistently, but not significantly, slower than the HWs (from 96.9% at the race situation, to 98.7% at 28 spm). These observations are important when considering biomechanical performance indicators in rowing, as significant changes in performance indicators may lead to only minimal alteration in boat velocity. 相似文献
7.
8.
9.
Brian S Alper Jason A Hand Susan G Elliott Scott Kinkade Michael J Hauan Daniel K Onion Bernard M Sklar 《Journal of the Medical Library Association》2004,92(4):429-437
OBJECTIVES: Medicine must keep current with the research literature, and keeping current requires continuously updating the clinical knowledge base (i.e., references that provide answers to clinical questions). The authors estimated the volume of medical literature potentially relevant to primary care published in a month and the time required for physicians trained in medical epidemiology to evaluate it for updating a clinical knowledge base. METHODS: We included journals listed in five primary care journal review services (ACP Journal Club, DynaMed, Evidence-Based Practice, Journal Watch, and QuickScan Reviews). Finding little overlap, we added the 2001 "Brandon/Hill Selected List of Print Books and Journals for the Small Medical Library." We counted articles (including letters, editorials, and other commentaries) published in March 2002, using bibliographic software where possible and hand counting when necessary. For journals not published in March 2002, we reviewed the nearest issue. Five primary care physicians independently evaluated fifty randomly selected articles and timed the process. RESULTS: The combined list contained 341 currently active journals with 8,265 articles. Adjusting for publication frequency, we estimate 7,287 articles are published monthly in this set of journals. Physicians trained in epidemiology would take an estimated 627.5 hours per month to evaluate these articles. CONCLUSIONS: To provide practicing clinicians with the best current evidence, more comprehensive and systematic literature surveillance efforts are needed. 相似文献
10.