全文获取类型
| 收费全文 | 5648篇 |
| 免费 | 53篇 |
| 国内免费 | 5篇 |
专业分类
| 教育 | 4159篇 |
| 科学研究 | 352篇 |
| 各国文化 | 113篇 |
| 体育 | 366篇 |
| 综合类 | 4篇 |
| 文化理论 | 58篇 |
| 信息传播 | 654篇 |
出版年
| 2021年 | 37篇 |
| 2020年 | 54篇 |
| 2019年 | 99篇 |
| 2018年 | 100篇 |
| 2017年 | 158篇 |
| 2016年 | 133篇 |
| 2015年 | 99篇 |
| 2014年 | 110篇 |
| 2013年 | 1450篇 |
| 2012年 | 120篇 |
| 2011年 | 107篇 |
| 2010年 | 101篇 |
| 2009年 | 120篇 |
| 2008年 | 139篇 |
| 2007年 | 126篇 |
| 2006年 | 115篇 |
| 2005年 | 111篇 |
| 2004年 | 111篇 |
| 2003年 | 107篇 |
| 2002年 | 95篇 |
| 2001年 | 62篇 |
| 2000年 | 74篇 |
| 1999年 | 59篇 |
| 1998年 | 64篇 |
| 1997年 | 70篇 |
| 1996年 | 73篇 |
| 1995年 | 69篇 |
| 1994年 | 76篇 |
| 1993年 | 70篇 |
| 1992年 | 69篇 |
| 1991年 | 76篇 |
| 1990年 | 76篇 |
| 1989年 | 76篇 |
| 1988年 | 66篇 |
| 1987年 | 60篇 |
| 1986年 | 69篇 |
| 1985年 | 55篇 |
| 1984年 | 61篇 |
| 1983年 | 85篇 |
| 1982年 | 60篇 |
| 1981年 | 54篇 |
| 1980年 | 47篇 |
| 1979年 | 41篇 |
| 1978年 | 64篇 |
| 1977年 | 51篇 |
| 1976年 | 41篇 |
| 1975年 | 43篇 |
| 1973年 | 38篇 |
| 1970年 | 31篇 |
| 1968年 | 31篇 |
排序方式： 共有5706条查询结果，搜索用时 15 毫秒
171.
172.
173.
174.
175.
In three experiments, rats received pairings of flavor conditioned stimuli with polycose unconditioned stimuli, in either
a simultaneous or a sequential relation. Both temporal relations produced excellent conditioned increases in consumption of
the flavors. Separate presentation of the flavors resulted in extinction in both cases. However, restoring the pairing of
the flavor with polycose resulted in reconditioning only with the sequential, not with the simultaneous, relation. 相似文献
176.
议程设置理论与后大众媒体时代的民意研究 总被引：4，自引：0，他引：4
关于媒体与民意的理论大部分提出于 1 93 0到 1 980年之间 ,这是一个仅仅拥有传统信息选择方式的时代。麦库姆斯和肖 (1 972 )最初提出议程设置理论时 ,用北卡罗莱纳州的教堂山 (ChapelHill)社区作为研究对象 ,而现在那里的媒介使用情况也已经发生了巨变。当我们迎来议程设置理论提出 3 0周年的时候 ,教堂山的受众现在面临的信息选择令人惊叹。在 2 0世纪 90年代 ,肖提出 ,美国的大众媒介已经经历了“兴和衰”(riseandfall)。肖认为 ,大众媒体时代结束于 2 0世纪 80年代。议程设置研究是否能像之前的 3 0年那样 ,继续开展下去 ?当受众使用着上百个信息来源时 ,议程设置和民意研究会产生何种变化 ?这是本文将要回答的问题 相似文献
177.
Barbara Costello Government Documents Librarian Assistant Professor Robert Lenholt Electronic Services Librarian Assistant Professor Judson Stryker PhD Associate Dean Lynn Professor of Accounting 《The Journal of Academic Librarianship》2004,30(6):452-460
Studies show that recent generations of college students have a learning style with identifiable characteristics. Library instruction efforts must adapt to these learning styles. Course management software (CMS), such as Blackboard, is one resource available to academic librarians to meet the challenges posed by the "Net Generation." At Stetson University, the use of Blackboard courseware in library instruction sessions successfully addressed the unique learning styles of students. 相似文献
178.
179.
Dr. Robert J. Masters 《Innovative Higher Education》1982,6(3):193-195
Since there is an increasing need for learning and relearning on the part of managers and executives, several business schools around the country have developed a program for offering seminars and workshops to the adult community for improving their level of supervisory, managerial, and executive performance. The purpose of this article is to lend assistance to those who are planning to embark upon this alternative higher education endeavor by sharing experiences from one institution. 相似文献
180.
Interaction of wrestling shoe and competition surface: effects on coefficient of friction with implications for injury 总被引：1，自引：0，他引：1
Newton R Doan B Meese M Conroy B Black K Sebstianelli W Kramer W 《Sports biomechanics / International Society of Biomechanics in Sports》2002,1(2):157-166
The purpose of this study was to determine whether there is a significant difference in the co-efficient of friction (Fc) between old versus new wrestling shoes and mats and to investigate the effect of perspiration. Fc was measured by dragging a weighted shoe over a wrestling mat surface and measuring the vertical and horizontal forces produced. Three different shoe conditions were assessed over two mat types for both wet and dry conditions for a total of 12 conditions. To simulate the wet condition, saline solution was smeared over the surface of the mat. There was a significant effect of shoe, mat, and wet/dry conditions. In addition, significant interactions of shoe by mat, shoe by dry/wet, and mat by dry/wet were observed. Overall, Fc was 36% higher for the new wrestling mat compared to the old wrestling mat. Application of the saline solution reduced Fc by 14% compared to the dry condition. Comparison of the mean Fc for all three shoe types revealed the Fc for the older design shoe was 23% to 28% lower than the brand new shoe and the worn newer design, respectively. A high Fc, such as in the new mat/new shoe combination, has the potential to increase the risk of knee and ankle injuries by fixing the foot more securely to the ground. 相似文献