全文获取类型
收费全文 | 10197篇 |
免费 | 127篇 |
国内免费 | 122篇 |
专业分类
教育 | 6520篇 |
科学研究 | 1234篇 |
各国文化 | 89篇 |
体育 | 1636篇 |
综合类 | 19篇 |
文化理论 | 66篇 |
信息传播 | 882篇 |
出版年
2021年 | 80篇 |
2020年 | 154篇 |
2019年 | 203篇 |
2018年 | 281篇 |
2017年 | 285篇 |
2016年 | 264篇 |
2015年 | 186篇 |
2014年 | 234篇 |
2013年 | 1576篇 |
2012年 | 213篇 |
2011年 | 225篇 |
2010年 | 190篇 |
2009年 | 209篇 |
2008年 | 189篇 |
2007年 | 183篇 |
2006年 | 201篇 |
2005年 | 178篇 |
2004年 | 384篇 |
2003年 | 353篇 |
2002年 | 338篇 |
2001年 | 406篇 |
2000年 | 244篇 |
1999年 | 163篇 |
1998年 | 108篇 |
1997年 | 98篇 |
1996年 | 97篇 |
1995年 | 107篇 |
1994年 | 104篇 |
1993年 | 77篇 |
1992年 | 153篇 |
1991年 | 121篇 |
1990年 | 137篇 |
1989年 | 151篇 |
1988年 | 111篇 |
1987年 | 130篇 |
1986年 | 120篇 |
1985年 | 138篇 |
1984年 | 123篇 |
1983年 | 125篇 |
1982年 | 97篇 |
1981年 | 85篇 |
1980年 | 91篇 |
1979年 | 139篇 |
1978年 | 89篇 |
1977年 | 77篇 |
1976年 | 91篇 |
1975年 | 69篇 |
1974年 | 75篇 |
1973年 | 68篇 |
1971年 | 66篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
191.
192.
The performance of 132 pre- and primary school children on a Bender-Gestalt copying task was compared with that of a multiple choice version that was specially constructed by systematically varying four attributes of the stimulus figures. Significant correlation coefficients were obtained between the copying and recognition scores at all age levels except one. The multiple choice version was also as successful as the copying test in predicting reading achievement scores. 相似文献
193.
Data were collected from a sample of school psychologists and teachers after termination of a teacher consultation experience. Stepwise regressions were performed on the data to determine which psychologist and teacher variables were related to teacher satisfaction with the school psychological consultation. The single most significant main effect on teacher satisfaction was the teacher's perception of the psychologist's facilitativeness. 相似文献
194.
195.
196.
Gail P. Hollowell Yolanda B. Anderson 《The American journal of distance education》2017,31(3):207-216
ABSTRACTNorth Carolina Central University (NCCU) recognized the need to address the increasing rates of Ds, Fs, and Withdrawal by students matriculating in online courses. Led by two science faculty, a faculty learning community in partnership with the NCCU Division of Extended Studies was created to assess online science course offerings and instruction. Faculty within this learning community completed the Quality Matters (QM) “Applying the Quality Matters Rubric” course. This online training course, coupled with services provided by the NCCU Division of Extended Studies, offered the faculty learning community a variety of pedagogical strategies to meet their instructional needs. All faculty participating in this learning community completed the online training course and all faculty indicated that they implemented changes in their subsequent online course offerings. This article describes the impact of that training and the application of quality course design standards in the Quality Matters Rubric on the design and student outcomes for an Introductory Biology course over four terms. As faculty learning communities are broadly utilized, it is anticipated that this article may present an effective strategy to increase the quality and quantity of online science, technology, engineering and mathematics (STEM) courses at similar institutions. 相似文献
197.
198.
Chris Bishop Lucas A. Pereira Valter P. Reis Paul Read Anthony N. Turner Irineu Loturco 《Journal of sports sciences》2020,38(11-12):1296-1303
ABSTRACT The aims of the present study were to provide an in-depth comparison of inter-limb asymmetry and determine how consistently asymmetry favours the same limb during different vertical jump tests. Eighteen elite female under-17 soccer players conducted unilateral squat jumps (SJ), countermovement jumps (CMJ) and drop jumps (DJ) on a portable force platform, with jump height, peak force, concentric impulse and peak power as common metrics across tests. For the magnitude of asymmetry, concentric impulse was significantly greater during the SJ test compared to CMJ (p = 0.019) and DJ (p = 0.003). No other significant differences in magnitude were present. For the direction of asymmetry, Kappa coefficients revealed fair to substantial levels of agreement between the SJ and CMJ (Kappa = 0.35 to 0.61) tests, but only slight to fair levels of agreement between the SJ and DJ (Kappa = ?0.26 to 0.18) and CMJ and DJ (Kappa = ?0.13 to 0.26) tests. These results highlight that the mean asymmetry value may be a poor indicator of true variability of between-limb differences in healthy athletes. The direction of asymmetry may provide a useful monitoring tool for practitioners in healthy athletes, when no obvious between-limb deficit exists. 相似文献
199.
E. P. Semenyuk 《Scientific and Technical Information Processing》2017,44(1):1-14
At the turn of the 21st century a methodological analysis of the planetary development of civilization became a topical issue in world science. Such an analysis is based on a framework of categorical concepts adopted for active use in globalistics, namely, the biosphere, sociosphere, technosphere, noosphere, and infosphere. The given context provides a new perspective on the phenomenon of information and informatics, with the latter having experienced increasing demands as a popular scientific discipline in the field of information. In the contemporary setting, these phenomena can be adequately evaluated only in connection with the above concepts. 相似文献
200.
This article is the third in a series reporting on the changes in attitudes and interests‐‐mainly with respect to physics‐of several hundred students as they proceed through the Danish upper secondary school (Gymnasium). It concentrates on the results of the final investigation which took place shortly before the students leave the school. 相似文献