全文获取类型
收费全文 | 28191篇 |
免费 | 259篇 |
国内免费 | 57篇 |
专业分类
教育 | 21246篇 |
科学研究 | 2352篇 |
各国文化 | 178篇 |
体育 | 1525篇 |
综合类 | 45篇 |
文化理论 | 451篇 |
信息传播 | 2710篇 |
出版年
2022年 | 101篇 |
2021年 | 188篇 |
2020年 | 235篇 |
2019年 | 367篇 |
2018年 | 2597篇 |
2017年 | 2537篇 |
2016年 | 2018篇 |
2015年 | 439篇 |
2014年 | 584篇 |
2013年 | 3511篇 |
2012年 | 673篇 |
2011年 | 1140篇 |
2010年 | 1233篇 |
2009年 | 817篇 |
2008年 | 1037篇 |
2007年 | 1517篇 |
2006年 | 481篇 |
2005年 | 747篇 |
2004年 | 689篇 |
2003年 | 598篇 |
2002年 | 361篇 |
2001年 | 379篇 |
2000年 | 310篇 |
1999年 | 265篇 |
1998年 | 161篇 |
1997年 | 171篇 |
1996年 | 181篇 |
1995年 | 144篇 |
1994年 | 156篇 |
1993年 | 141篇 |
1992年 | 217篇 |
1991年 | 217篇 |
1990年 | 240篇 |
1989年 | 220篇 |
1988年 | 180篇 |
1987年 | 187篇 |
1986年 | 192篇 |
1985年 | 178篇 |
1984年 | 180篇 |
1983年 | 171篇 |
1982年 | 136篇 |
1981年 | 136篇 |
1980年 | 135篇 |
1979年 | 193篇 |
1978年 | 163篇 |
1977年 | 114篇 |
1976年 | 119篇 |
1975年 | 111篇 |
1973年 | 105篇 |
1971年 | 116篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
Abstract The Florida Teletraining Project tested the feasibility of using community colleges as providers of various types of military training to personnel in the Reserve Components (RC). Training was delivered via the Army's TNET system, which employs two‐way interactive video. Five courses were produced, delivered, and evaluated during the project. Results showed that effective military course reconfiguration can be accomplished by civilian institutions, that the delivery system was technically reliable, that students performed well using specially reconfigured courseware, and that students rated the video teletraining approach as effective. The project demonstrated the potential of two‐way video teletraining for a variety of military training applications for several different levels of military personnel. 相似文献
972.
A great deal of measurement research is currently being utilized to improve instruction at the elementary and secondary levels, but many opportunities for improving utilization are still untapped. The author proposes specific approaches to increased collaboration between researchers and practitioners to meet the burgeoning research needs of the nations' schools and to assist in data-based decision-making efforts. Society's increasing demands for accurate, usable data have contributed to the urgent current need for viable, appropriate research. This need can be met only by reseachers and practitioners working together to provide answers to critical educational questions. 相似文献
973.
974.
975.
976.
977.
978.
979.
Steven M. Ross William L. Sanders S. Paul Wright Sam Stringfield L. Weiping Wang Marty Alberg 《School Effectiveness & School Improvement》2013,24(3):323-346
The purpose of this study was to analyze student achievement data from the first 3 years of the Memphis Restructuring Initiative (MRI). The MRI represents one of the first efforts by an urban school district to move past traditional top-down versus bottom-up reform debates by providing systemic support for outside-in/inside-out implementation and local co-construction of externally-developed reform designs in schools. Analyses of academic achievement focus on a state-of-the-art measure of value added assessments. At the end of 3 years the reforming schools had produced generally positive gains relative to locally matched control schools. Those results varied somewhat by reform type and by level of poverty in the communities being served. Based on the research methods used and the results, implications for future research and practice in educational reform are discussed. 相似文献
980.
Randall L. Bytwerk 《Communication Studies》2013,64(3-4):304-314
Eulenspiegel, the weekly humor periodical of the German Democratic Republic, prints considerable satire directed toward the United States. The essay examines the extent of that material, its major themes, and its basic techniques. The satire provides satisfying contrast to domestically directed satire, which addresses far less serious problems, and contributes to the general propaganda campaign. The predictability and repetitiousness of the material, however, greatly reduces its satiric quality and effectiveness. 相似文献