全文获取类型
收费全文 | 25806篇 |
免费 | 451篇 |
国内免费 | 254篇 |
专业分类
教育 | 17408篇 |
科学研究 | 3098篇 |
各国文化 | 240篇 |
体育 | 1773篇 |
综合类 | 512篇 |
文化理论 | 102篇 |
信息传播 | 3378篇 |
出版年
2022年 | 202篇 |
2021年 | 444篇 |
2020年 | 428篇 |
2019年 | 450篇 |
2018年 | 591篇 |
2017年 | 635篇 |
2016年 | 577篇 |
2015年 | 610篇 |
2014年 | 918篇 |
2013年 | 3889篇 |
2012年 | 1128篇 |
2011年 | 1202篇 |
2010年 | 1082篇 |
2009年 | 1039篇 |
2008年 | 1071篇 |
2007年 | 1112篇 |
2006年 | 1128篇 |
2005年 | 937篇 |
2004年 | 565篇 |
2003年 | 575篇 |
2002年 | 514篇 |
2001年 | 606篇 |
2000年 | 455篇 |
1999年 | 398篇 |
1998年 | 242篇 |
1997年 | 215篇 |
1996年 | 237篇 |
1995年 | 186篇 |
1994年 | 177篇 |
1993年 | 158篇 |
1992年 | 240篇 |
1991年 | 214篇 |
1990年 | 242篇 |
1989年 | 219篇 |
1988年 | 177篇 |
1987年 | 185篇 |
1986年 | 191篇 |
1985年 | 177篇 |
1984年 | 183篇 |
1983年 | 169篇 |
1982年 | 136篇 |
1981年 | 136篇 |
1980年 | 132篇 |
1979年 | 190篇 |
1978年 | 160篇 |
1977年 | 112篇 |
1976年 | 119篇 |
1975年 | 111篇 |
1973年 | 104篇 |
1971年 | 116篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
男子赛艇运动员与训练有关的有氧无氧能力和激素变化 总被引:3,自引:0,他引:3
观察了15名男子赛艇运动员为期30周训练中最大做功能力、最大乳酸值、最大摄氧量及心脏形态和功能的变化及相应时期的血清睾酮、游离睾酮、皮质醇的急慢性效应。在以力量训练为主的准备期,变化较小,以专项训练为主的准备期,心功能和有氧能力明显改善。最大负荷后及高强度训练12周后,血清睾酮降低。提示在不同训练周期中力量—耐力训练应合理安排,有利于发挥机体适应能力。 相似文献
22.
�ҹ������Գ��������ͻ����о���չ���� 总被引:1,自引:0,他引:1
??The classification of the serial publication ca!eaery in China hcgan at the end of last century Before the founding of the People's Republic of China, it underwent three stages. In the first stage, it was ciassied as news- paper, then periodical, finally both the newpaper and periodical. In the 3934s, the research in this respect was more active and some ideas far minute classification and generalization were put forward, but it didn`t go in depth. From the founding of the People's Republic of China to the 1970s, only little research work was done. It was not unti 1980s that the research began flourishing and serial publication category was basically established, but there still remains a dispute on its name. Now the research of the minute classification of the serial publication is under dis- cussian. 相似文献
23.
24.
Audrey L. Qualls 《Educational Measurement》2001,20(1):9-16
What is the typical amount of student answer‐changing that takes place in a low‐stakes test environment? Can we use this information to look for evidence of improper answer‐changing (cheating) on high‐stakes test? 相似文献
25.
The many challenges faced by health sciences libraries of all types and sizes often require innovative solutions. When an innovative solution involves calculated risk taking, the approach is called intrapreneurial. At the University of Miami School of Medicine, an intrapreneurial approach solved the fiscal problems of the biomedical communications unit. The Louis Calder Memorial Library inherited these problems when the Department of the Library and Biomedical Communications was created in the early 1980s. In this paper, two intrapreneurial programs are described, and the benefit and suitability of this management style to information services are demonstrated. 相似文献
26.
数据挖掘--极具发展潜力的新领域 总被引:3,自引:0,他引:3
韩江 《苏州市职业大学学报》2004,15(1):56-58
数据挖掘是在数据库中对数据进行一定的处理,从而获得其中隐含的、事先未知的而又可能极为有用的信 息。这些信息通常是以知识、规则或约束等形式来表现的。这些知识可以用于知识管理、问题求解、制定决策、过程控制 和其他领域。本文分析了数据挖掘技术的相关领域及其基本问题,为获取知识提供了一种新方法。 相似文献
27.
L. DiANNE BORDERS 《Counselor Education & Supervision》1991,31(1):32-47
A multiple case study of four supervisors indicated that numerous factors shape supervisors' in-session performance and revealed a complex interplay between thoughts and behaviors. 相似文献
28.
Thomas L. Bonn 《Publishing Research Quarterly》1993,9(1):3-19
New World Writing, a magazine founded by New American Library in 1952, quickly became an important vehicle for liberal intellectual
and literary thought. In addition to providing an outlet for new writing, the magazine became an important acquisitions tool
for NAL. Throughout its lifetime, New World Writing remained a showcase for many of the finest writers of the 1950s, including
Christopher Isherwood, Louis Auchincloss, Tennessee Williams, Flannery O’Connor, Jack Kerouac, and Gore Vidal.
He is the author of Under Cover: An Illustrated History of American Mass Market Paperbacksand Heavy Traffic and High Culture: The New American Library as Literary Gatekeeper. He is working on a study of American literary
agents 相似文献
29.
Deborah L. Bandalos 《Educational Measurement》2004,23(2):33-40
Recent implementation of Nebraska's Standards-based Teacher-led Assessment and Reporting System (STARS) introduced a unique opportunity to examine the benefits and drawbacks of a teacher-led state assessment system. STARS is unique among state assessment systems in that statewide tests are replaced by locally developed assessments designed by teachers. Benefits of this system are found to be greater teacher use of results for instructional planning, greater diagnostic utility of the assessments, and gains in assessment literacy. Disadvantages include the time-consuming and stressful nature of creating localized assessments. Compatibility of STARS with the requirements of the No Child Left Behind Act are discussed. 相似文献
30.
质量:高等教育面对规模扩大的核心问题 总被引:2,自引:0,他引:2
黄江昆 《泉州师范学院学报》2002,20(3):13-16
在当前我国高等教育规模持续扩大背景下 ,保证和提高教育质量 ,必须对高等教育质量观进行再认识 ,解决师资队伍结构性短缺 ,加强高等教育立法以及建立高等教育质量监控体系 相似文献