全文获取类型
收费全文 | 23531篇 |
免费 | 321篇 |
国内免费 | 125篇 |
专业分类
教育 | 16059篇 |
科学研究 | 2894篇 |
各国文化 | 428篇 |
体育 | 1947篇 |
综合类 | 15篇 |
文化理论 | 177篇 |
信息传播 | 2457篇 |
出版年
2021年 | 184篇 |
2020年 | 316篇 |
2019年 | 463篇 |
2018年 | 617篇 |
2017年 | 595篇 |
2016年 | 578篇 |
2015年 | 371篇 |
2014年 | 481篇 |
2013年 | 4101篇 |
2012年 | 470篇 |
2011年 | 502篇 |
2010年 | 393篇 |
2009年 | 395篇 |
2008年 | 466篇 |
2007年 | 485篇 |
2006年 | 439篇 |
2005年 | 423篇 |
2004年 | 422篇 |
2003年 | 357篇 |
2002年 | 340篇 |
2001年 | 380篇 |
2000年 | 413篇 |
1999年 | 403篇 |
1998年 | 218篇 |
1997年 | 220篇 |
1996年 | 248篇 |
1995年 | 229篇 |
1994年 | 189篇 |
1993年 | 218篇 |
1992年 | 334篇 |
1991年 | 347篇 |
1990年 | 351篇 |
1989年 | 384篇 |
1988年 | 315篇 |
1987年 | 328篇 |
1986年 | 318篇 |
1985年 | 383篇 |
1984年 | 329篇 |
1983年 | 315篇 |
1982年 | 266篇 |
1981年 | 234篇 |
1980年 | 238篇 |
1979年 | 368篇 |
1978年 | 268篇 |
1977年 | 257篇 |
1976年 | 220篇 |
1975年 | 199篇 |
1974年 | 221篇 |
1973年 | 197篇 |
1971年 | 180篇 |
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
991.
A Seminar targeting academically at‐risk sophomores was developed and introduced in 2002 to address weak connectedness to the university and poor academic abilities. We measured changes in approaches taken to college studies by those at‐risk sophomores who enrolled in the course, as well as employed a longitudinal, quasi‐experimental design to track this experimental group (n = 29) and the remainder of the at‐risk cohort as a comparison group (n = 36). Our preliminary findings suggest that the Seminar has had a variety of positive outcomes, the most impressive impact being that the experimental group had dramatically better retention and graduation rates than the comparison group. 相似文献
992.
Kyle R. Carter 《Roeper Review》2013,35(3):180-184
This article explores some of the materials prepared for parents of gifted children and examines the explanatory language and concepts used in terms of their potential for shaping parental attitudes and affecting the adjustment of gifted children. The author argues that the conceptual frameworks used to explain giftedness, nongiftedness and the nature of differences have powerful effects on societal and educational attitudes, including the willingness to provide differentiated services for gifted children. A strong plea is made for professional sensitivity and responsibility in describing giftedness in ways that do not isolate gifted children or their parents and which potentiate shared advocacy with other educational advocacy groups. 相似文献
993.
Abstract We designed a survey to assess whether 40 randomly selected individuals, equally divided across two settings (ICF/MR, minigroup home), differed in the amounts of time spent in the community, the people with whom unstructured activities were performed, and the choice maker of unstructured activities performed in the community or in homes. Time spent in unstructured activities was divided into four subsets: performed by self, with a peer, with staff, and with family. An analysis of variance (ANOVA) indicated that individuals living in ICF/MR homes spent more time in the community with staff and made fewer choices of their unstructured activities than those living in minigroup homes. The analyses also indicated that for those retaining their own legal guardianship and living in ICF/MR homes continued to spend less time in activities they chose themselves. Of those variables reaching statistical significance, we questioned meaningful interpretations based on alternative interpretations of the raw data. 相似文献
994.
995.
Patrick R. Parsons 《广播与电子媒介杂志》2013,57(3):354-365
For the last 20 years, scholarly and popular accounts of the development of cable television have recounted the story of John Walson, Sr., who claimed to have started the first CATV system in June of 1948 in Mahanoy City, Pennsylvania. When Walson died in March of 1993, newspapers around the country credited him with starting the nation's first cable system and even “founding”; the industry. The claim, however, has always been clouded by questions and a lack of documentation. This paper reports the results of an investigation of the Walson story. It concludes that, as bright and promising as the Walson tale may be, it probably is not true. At the very least, the preponderance of evidence suggests that Walson got his start in the community antenna television business in late 1950, about the same time as many others around the country and, importantly, probably after another group of businessmen already had begun a system in Mahanoy City itself. 相似文献
996.
Amy B. Shuffelton 《Educational theory》2012,62(3):305-321
In this essay Amy Shuffelton considers Jean‐Jacques Rousseau's suspicion of imagination, which is, paradoxically, offered in the context of an imaginative construction of a child's upbringing. First, Shuffelton articulates Rousseau's reasons for opposing children's development of imagination and their engagement in the sort of imaginative play that is nowadays considered a hallmark of early and middle childhood. Second, she weighs the merits of Rousseau's opposition, which runs against the consensus of contemporary social science research on childhood imaginative play. Ultimately, Shuffelton argues that Rousseau's work offers an important cautionary note to enthusiasts of children's imaginative play, due to the potentially disruptive influence of consumer capitalism, though she also notes that imagination may play a more redemptive role than Rousseau granted it. 相似文献
997.
998.
Building a Beowulf: Leveraging Research and Department Needs for Student Enrichment via Project Based Learning 总被引:2,自引:1,他引:1
Robert B. Heckendorn 《Computer Science Education》2013,23(4):255-273
In the fall 2000 a need for an inexpensive cutting edge computation facility provided an opportunity to explore the use of department needs as a real world problem in a classroom settings. The results of the class would benefit the department's research goals. Provide a practical student experience with a cutting edge real world problem, and an educational opportunity for the instructor. The successes and pitfalls of our two semester adventure of placing the students in real world scenario to design, buy, and build a Beowulf cluster from scratch is described. Teaching techniques such as project based learning as well as tips for Beowulf construction are detailed. 相似文献
999.
ABSTRACT American high schools present an extremely difficult, nearly intractable setting for serious educational reform efforts. Yet such efforts can succeed. This article reports results from a survey of 179 urban comprehensive high schools that were successfully implementing change programs based on effective schools principles. All schools encountered problems of implementation. Larger‐scale, instructionally‐oriented, and longer‐lasting programs induced more problems. Problems were only moderated, not eliminated, by good‐quality planning. Given the problem‐richness of change efforts, the major determinant of successful implementation was good problem‐coping. It was made more likely by the presence of consensus (shared vision), support of key stakeholders in and out of the school, planning quality, external assistance, and administrative time spent. Case studies showed that the presence of an empowered change management group aided all these critical factors. Schools with the most impact (defined as student outcomes, teacher improvement, and organizational improvement) had focused on teacher or organizational changes to begin with, coped with the inevitable problems well, had internal and external constituencies supporting the change effort, and sustained the work for a longer period of time (typically 4‐5 years). The key variables appear to form a coherent causal network. Implications for change management are drawn. 相似文献
1000.