首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1763篇
  免费   36篇
  国内免费   1篇
教育   1195篇
科学研究   79篇
各国文化   13篇
体育   239篇
综合类   1篇
文化理论   15篇
信息传播   258篇
  2023年   10篇
  2022年   9篇
  2021年   12篇
  2020年   39篇
  2019年   68篇
  2018年   72篇
  2017年   66篇
  2016年   73篇
  2015年   55篇
  2014年   49篇
  2013年   448篇
  2012年   41篇
  2011年   61篇
  2010年   47篇
  2009年   41篇
  2008年   55篇
  2007年   63篇
  2006年   38篇
  2005年   26篇
  2004年   27篇
  2003年   28篇
  2002年   30篇
  2001年   22篇
  2000年   31篇
  1999年   22篇
  1998年   17篇
  1997年   10篇
  1996年   12篇
  1995年   12篇
  1994年   16篇
  1993年   20篇
  1992年   17篇
  1991年   18篇
  1990年   14篇
  1989年   12篇
  1988年   15篇
  1987年   8篇
  1986年   15篇
  1985年   13篇
  1984年   12篇
  1983年   15篇
  1982年   16篇
  1981年   15篇
  1980年   6篇
  1979年   7篇
  1978年   7篇
  1977年   8篇
  1975年   9篇
  1973年   8篇
  1972年   5篇
排序方式: 共有1800条查询结果,搜索用时 171 毫秒
61.
62.
63.
64.
This article considers in a wide perspective the crisis in the assessment of examinations in A‐level English Literature and current attempts to address the problems. Examining the implications of a survey of recent reports initiated by the regulator, it argues that trying to ensure reliability merely through technological advances and changes in examining practice obscures the need for English teachers’ communal understanding of academic standards to be developed through their professional experience. It proposes ways in which this should be achieved, for example by developing current and potential professional networks and communities of practice.  相似文献   
65.
A Hunter College librarian, with public library experience, offered a series of drop-in workshops Saturday afternoons open to all students and questions regarding Web or Windows use in the academic year, 2000-2001. The intention of the workshops was to address the continuous needs of students lacking technological and informational literacy. The success of these workshops led to this investigation of the implications of 21st century technology on non-traditional students from the perspective of bibliographic instruction as well as reference desk service. The perspective is that of the urban educational environment of City University of New York and Hunter College. The histories of open admissions at CUNY and the current efforts to abolish remediation are examined.  相似文献   
66.
This article maps the biomedical literature of Nigeria by source/origin of publications and authorships from 1967 to 2002. This mapping is expected to provide crucial information to both government and others taking funding and related decisions regarding biomedical research in Nigeria. Data was collected from MEDLINE. Scientists publishing on Nigerian biomedicine have written 6,820 articles in 295 journals/sources. Only eight of the 121 local journals that published biomedical research in Nigeria during the period were included in MEDLINE's listing (2.72%), while there were 32 (10.84%) regional and 255 (86.44%) external journals used. Local journals appeared to be more heavily used than regional and external ones. It was also shown that MEDLINE does not adequately represent Nigeria's biomedical literature.  相似文献   
67.
It is increasingly important for government agencies to collaborate across jurisdictional and functional boundaries. Interorganizational systems supporting interagency collaboration must accommodate a wide range of factors from the external environment and participating organizations as part of their design and operation. This paper presents the findings from a case study of CapWIN, a collaborative network created to enable first responders to share information across jurisdictional and functional boundaries as they work together during emergencies and other critical events. The study examines how aspects of the external environment and the agency context impeded or facilitated the CapWIN collaborative network and the interorganizational system (IOS) that supports it. We identify factors affecting information sharing and collaborative processes, and describe how these factors interact to enable and constrain an IOS. The paper concludes with suggestions for further research on the interplay of environmental, organizational, and technical aspects of interagency collaboration networks as they evolve over time.  相似文献   
68.
Publishing research, to be effective and useful, requires the participation of scholars and practitioners in many disciplines: literature, history, sociology, psychology, technology, economics, and education. Examples are drawn from trade and scholarly publishing. The results of such research can benefit all segments of the industry. Beth Luey is director, Scholarly Publishing Program at Arizona State University and have been editor of Publishing Research Quarterly since 1988. She is the author of several books, includingHandbook for Academic Authors.  相似文献   
69.
The aims of this study were to examine and compare selected physiological and metabolic responses of wheelchair athletes in two paraplegic racing classes [T3: n = 8 (lesion levels T1-T7; paraplegics); T4: n = 9 (lesion levels below T7; paraplegics)] to prolonged exercise. In addition, we describe the responses of three tetraplegic athletes [T2: n = 3 (lesion levels C6/C7: tetraplegics)]. Twenty athletes completed 90 min of exercise at 75% VO2peak on a motorized treadmill adapted for wheelchairs. The mean (+/- s) heart rates of the T3 and T4 racing classes were 165 +/- 2 and 172 +/- 6 beats.min-1, respectively. For the T4 racing class, heart rate gradually increased during the test (P < 0.05), whereas for the T3 racing class, heart rate reached a plateau after an initial increase. The mean heart rate of the tetraplegics was 114 +/- 3 beats.min-1. The T3 and T4 classes exhibited similar respiratory exchange ratios, plasma lactate and glucose concentrations throughout the test. For both the T3 and T4 racing class, free fatty acid, glycerol, ammonia, urea and potassium concentrations had increased from resting values by the end of the test (P < 0.05). In conclusion, the results of this study suggest that endurance-trained wheelchair athletes are able to maintain velocities equivalent to the same relative exercise intensity (75% VO2peak) for prolonged periods irrespective of lesion level.  相似文献   
70.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号