全文获取类型
收费全文 | 1745篇 |
免费 | 36篇 |
国内免费 | 1篇 |
专业分类
教育 | 1253篇 |
科学研究 | 162篇 |
各国文化 | 39篇 |
体育 | 87篇 |
综合类 | 4篇 |
文化理论 | 14篇 |
信息传播 | 223篇 |
出版年
2024年 | 5篇 |
2023年 | 16篇 |
2022年 | 16篇 |
2021年 | 43篇 |
2020年 | 57篇 |
2019年 | 88篇 |
2018年 | 114篇 |
2017年 | 122篇 |
2016年 | 107篇 |
2015年 | 81篇 |
2014年 | 103篇 |
2013年 | 357篇 |
2012年 | 78篇 |
2011年 | 91篇 |
2010年 | 64篇 |
2009年 | 68篇 |
2008年 | 48篇 |
2007年 | 48篇 |
2006年 | 54篇 |
2005年 | 18篇 |
2004年 | 31篇 |
2003年 | 31篇 |
2002年 | 25篇 |
2001年 | 14篇 |
2000年 | 14篇 |
1999年 | 14篇 |
1998年 | 9篇 |
1997年 | 6篇 |
1996年 | 4篇 |
1995年 | 7篇 |
1994年 | 4篇 |
1993年 | 2篇 |
1992年 | 5篇 |
1991年 | 6篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 5篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 3篇 |
1975年 | 1篇 |
1974年 | 1篇 |
排序方式: 共有1782条查询结果,搜索用时 15 毫秒
991.
以初中生为研究对象,选取自我效能、乐趣、主观障碍、社会支持和学校环境等5个反映社会生态模型个体水平、人际水平和组织水平的因素,就其对青少年参与校内闲暇时间身体活动的影响进行分析.结果显示:午饭后身体活动强度(F=3.79,P<0.05)、持续时间(F=4.03,P<0.05)和对锻炼的乐趣(F=0.82,P<0.05)、学校政策与管理(F=10.67,P<0.05)认知存在显著的性别差异.自我效能(F=3.79,P<0.05)、过程障碍(F=6.43,P<0.01)和对运动场地与设施(F=10.95,P<0.01)的感知存在显著的年级差异.回归分析显示:自我效能(β=0.29,P<0.05)、老师社会支持(β=0.21,P<0.05)、学校绿化建设(β=0.13,P<0.05)对青少年参与校内闲暇时间身体活动的影响具有统计学意义.结论:学校应重视特定时段学生身体活动的组织和管理,尤其是对女生的组织和管理;自我效能、老师社会支持、学校绿化建设是影响青少年参与校内闲暇时间身体活动的主要因素. 相似文献
992.
This study compared newspaper frames of the 2013 Asiana Airlines crash in the three countries involved: the USA, Korea, and China. The results revealed distinct patterns of news coverage under the particular influence of national interests. The responsibility frame was the most frequently used, but the attribution of responsibility varied across the three countries. US newspapers overwhelmingly attributed the causation to pilot error, Korean media framed the causation as being open to multiple explanations, and Chinese newspapers were less likely to speculate about causation before the final official conclusion was reached. US and Korean media maintained a negative tone toward each other, while Chinese newspapers took a similar standpoint as the US media but were slightly less negative toward Korea. Further, divergence of news frames used across countries was associated with the different use of sources by different newspapers across countries. In particular, Korean media indicated reluctance to use US officials and a preference to cite alternative sources which offered diverse opinions regarding the attribution of responsibility. Finally, emotions of the crash stories varied by attributions of causation in Korean but not in the other countries’ news reports. 相似文献
993.
994.
As access to information becomes more intensive in society, a great deal of that information is becoming available through diverse channels. Accordingly, users require effective methods for accessing this information. Conversational agents can act as effective and familiar user interfaces. Although conversational agents can analyze the queries of users based on a static process, they cannot manage expressions that are more complex. In this paper, we propose a system that uses semantic Bayesian networks to infer the intentions of the user based on Bayesian networks and their semantic information. Since conversation often contains ambiguous expressions, the managing of context and uncertainty is necessary to support flexible conversational agents. The proposed method uses mixed-initiative interaction (MII) to obtain missing information and clarify spurious concepts in order to understand the intention of users correctly. We applied this to an information retrieval service for websites to verify the usefulness of the proposed method. 相似文献
995.
To resolve some of lexical disagreement problems between queries and FAQs, we propose a reliable FAQ retrieval system using query log clustering. On indexing time, the proposed system clusters the logs of users’ queries into predefined FAQ categories. To increase the precision and the recall rate of clustering, the proposed system adopts a new similarity measure using a machine readable dictionary. On searching time, the proposed system calculates the similarities between users’ queries and each cluster in order to smooth FAQs. By virtue of the cluster-based retrieval technique, the proposed system could partially bridge lexical chasms between queries and FAQs. In addition, the proposed system outperforms the traditional information retrieval systems in FAQ retrieval. 相似文献
996.
Effective schools should be superior in both enhancing students’ achievement levels and reducing the gap between high- and
low-achieving students in the school. However, the focus has been placed mainly on schools’ achievement levels in most school
effect studies. In this article, we focused our attention upon the school-specific achievement dispersion as well as achievement
level in determining effective schools. The achievement dispersion in a particular school can be captured by within-school
variance in achievement (σ2). Assuming heterogeneous within-school variance across schools in hierarchical modeling, it is possible to identify school
factors related to high achievement levels and a small gap between high- and low-achieving students. By analyzing data from
the TIMMS-R, we illustrated how to detect variance heterogeneity and how to find a systematic relationship between within-school
variance and school practice. In terms of our results, we found that schools with a high achievement level tended to be more
homogeneous in achievement dispersion, but even among schools with the same achievement level, schools varied in their achievement
dispersion, depending on classroom practices. 相似文献
997.
This paper considers how the issue of child labour is located in Cambodian education policy debates and how it is affected by the major constraints surrounding the Cambodian education sector. In particular, it asks why Cambodian policy makers have not sought to address the issue explicitly despite its considerable, and adverse, impact on children's school education. In doing so it first identifies the Cambodian education sector's passive approach to child labour, leaving it as a problem to be resolved by wider economic development. Secondly, it finds that the major constraints surrounding the education sector, including the issue of its governance, contribute to sustain a wide gap between stated education policies and actual practice, thus further diminishing working children's chances to benefit from a school education. 相似文献
998.
This study examined the effect of administrative support on teachers’ job satisfaction and intent to stay in teaching. The study employed a path analysis to the data of regular, full-time, public school teachers from the Schools and Staffing Survey teacher questionnaire. Administrative support was the most significant predictor of teachers’ job satisfaction, while teachers’ job satisfaction was the most significant predictor of teachers’ intent to stay in teaching. It was also confirmed that administrative support mediates the effect of teaching experience, student behavior, and teachers’ satisfaction with their salary on teachers’ job satisfaction and intent to stay in teaching. 相似文献
999.
Our purpose was to illustrate the process by which caring relationships between students and their teacher educator developed in the context of preservice reading preparation that made use of online communication as one class activity. Describing the development of caring relationships between three students and their teacher, we showed that caring could not be considered a one-way characteristic of what teachers do and are, but rather that it depended on students’ reciprocal responses. Findings indicated that the trajectories of caring relationships developed differently, each influenced by differences in entering expectations, critical events, and a negotiation of what the relationship meant. 相似文献
1000.
Kyung Ja Kim 《Reading and writing》2011,24(8):861-881
This study was designed to identify underlying factors that motivate language learners to read in a foreign language (L2) context. It also examined the relationships between L1 and L2 reading motivation and any differences in reading motivation based on the learners?? academic majors and L2 reading proficiency. 259 Korean EFL college students participated in this study. Participants?? L1 and L2 reading motivation was measured using a Likert scale questionnaire and their L2 proficiency was estimated by test scores in their reading classes. This study yielded a four-factor solution for L2 reading motivation: learning goal-oriented motivation, intrinsic motivation, avoidance of reading, and utility value of L2 reading. The results indicated that learning goal-oriented motivation and utility value of L2 reading were the two primary indicators for the participants?? desire to read in English. The study also demonstrated that the factor-based L2 reading motivation scales correlated with some of the L1 reading motivation scales in the relatively low range but statements about the connection or transfer issue of reading motivation between the two languages must be tentative. All L2 reading motivation scales revealed significant differences between English and non-English majors except in utility value of L2 reading. Furthermore intrinsic and avoidance scales also differed significantly depending on the participants?? L2 reading proficiency. 相似文献