全文获取类型
收费全文 | 766篇 |
免费 | 24篇 |
专业分类
教育 | 576篇 |
科学研究 | 29篇 |
各国文化 | 14篇 |
体育 | 68篇 |
文化理论 | 5篇 |
信息传播 | 98篇 |
出版年
2023年 | 6篇 |
2022年 | 9篇 |
2021年 | 6篇 |
2020年 | 27篇 |
2019年 | 31篇 |
2018年 | 35篇 |
2017年 | 48篇 |
2016年 | 50篇 |
2015年 | 21篇 |
2014年 | 35篇 |
2013年 | 153篇 |
2012年 | 27篇 |
2011年 | 19篇 |
2010年 | 15篇 |
2009年 | 27篇 |
2008年 | 24篇 |
2007年 | 15篇 |
2006年 | 15篇 |
2005年 | 17篇 |
2004年 | 13篇 |
2003年 | 20篇 |
2002年 | 8篇 |
2001年 | 14篇 |
2000年 | 10篇 |
1999年 | 9篇 |
1998年 | 5篇 |
1997年 | 5篇 |
1996年 | 5篇 |
1995年 | 9篇 |
1993年 | 5篇 |
1992年 | 7篇 |
1991年 | 5篇 |
1990年 | 8篇 |
1989年 | 3篇 |
1988年 | 5篇 |
1987年 | 6篇 |
1986年 | 3篇 |
1984年 | 5篇 |
1983年 | 4篇 |
1982年 | 3篇 |
1981年 | 6篇 |
1980年 | 5篇 |
1978年 | 4篇 |
1977年 | 4篇 |
1976年 | 4篇 |
1929年 | 2篇 |
1887年 | 2篇 |
1866年 | 2篇 |
1865年 | 4篇 |
1862年 | 2篇 |
排序方式: 共有790条查询结果,搜索用时 15 毫秒
171.
Statistical analysis and comparison of library print and online holdings are used to reduce shelf area and inform index back-file purchases. Nikki DeMoville of California Polytechnic State University’s Robert E. Kennedy Library combined Counting Online Usage of Networked Electronic Resources (COUNTER) JR2 Access Denied usage reports, holdings information, and print circulation data to identify journals exhibiting a high desirability for online access and low print circulation. In this presentation, DeMoville shared how further combination of this data with ScienceDirect quote lists for back-file journal packages and Web of Science metrics could be used to support the efficient de-selection of print journals, allowing the library to recover the maximum amount of physical space while also acquiring backfile access to those titles most frequently needed in electronic format. The presentation detailed the workflows and comparative methodology used to reach collection management and development decisions for journal coverage, with an emphasis on before and after metrics. 相似文献
172.
Jamie Reiger 《Journal of sports sciences》2016,34(3):259-266
The purpose of this study was to determine the effect of oral contraceptive use on bone serum markers following a 3-week jumping protocol. Twenty-three females (18–25 years) were grouped as oral contraceptive users (OC+) or non-users (OC?). Following a 3-week observation period, participants completed a 3-week (15-day) jump protocol. Jump sessions consisting of ten 42 cm drop jumps with a 30 s rest interval between jumps were completed each day, 5 days per week. Peak vertical ground reaction force and loading rate were measured and the osteogenic index was calculated. Serum markers for bone formation, bone alkaline phosphatase (BAP) and bone resorption, C-terminal telopeptides of type I collagen (CTX) were measured at three time points (pre-, mid-, post-jump). BAP and CTX increased significantly (P = 0.0017, 0.0488) in both groups post-jump; however, bone metabolic markers were not different between the OC+ and OC? groups. Osteogenic index, ground reaction force and vertical jump height were similar between groups. Correlations between markers of bone metabolism and participants’ age at menarche, weight, loading rate and years on OC were not significant. A 3-week jumping protocol was found to be effective in stimulating bone metabolism in both OC+ and OC? groups. 相似文献
173.
174.
OBJECTIVE: The primary objective was to examine the long-term impact of mother-son incest and positive initial perceptions of sexual abuse experiences on adult male psychosocial functioning. METHOD: Sixty-seven clinic-referred men with a history of sexual abuse participated. The participants completed self-report measures regarding their current psychosocial functioning and described the nature of their sexual and physical abuse experiences during childhood. RESULTS: Seventeen men reported mother-son incest, and these men endorsed more trauma symptoms than did other sexually abused men, even after controlling for a history of multiple perpetrators and physical abuse. Mother-son incest was likely to be subtle, involving behaviors that may be difficult to distinguish from normal caregiving (e.g., genital touching), despite the potentially serious long-term consequences. Twenty-seven men recalled positive or mixed initial perceptions of the abuse, including about half of the men who had been abused by their mothers. These men reported more adjustment problems than did men who recalled purely negative initial perceptions. CONCLUSIONS: Mother-son incest and positive initial perceptions of sexual abuse experiences both appear to be risk factors for more severe psychosocial adjustment problems among clinic-referred men. 相似文献
175.
176.
177.
A modified system of least intrusive prompting was used to teach middle school students with moderate intellectual disability who were emergent readers to comprehend short passages of text. Text passages were summaries of the chapters of age-appropriate novels rewritten for a beginning reading level. Time delay was used to teach the participants to pair WH words to their definition. A modified system of least intrusive prompting was used to teach strategies for answering comprehension questions. All participants improved the number of correct responses for both rules definitions and comprehension responses from baseline to intervention. Additionally, probes collected during the session prior to the introduction of a new book indicated comprehension skills generalized to new untaught books. 相似文献
178.
In this article, the author addresses the problem of content knowledge dominating the school curriculum and the resultant marginalization of sociocivic and moral dispositions. Given the problems associated with teaching dispositions directly, the author offers four curricular aims that collectively develop the attitudes required of democratic citizens through deliberate employment in daily curriculum planning. 相似文献
179.
180.