首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   332篇
  免费   6篇
教育   204篇
科学研究   28篇
各国文化   9篇
体育   42篇
文化理论   1篇
信息传播   54篇
  2023年   4篇
  2022年   3篇
  2021年   12篇
  2020年   10篇
  2019年   23篇
  2018年   20篇
  2017年   28篇
  2016年   29篇
  2015年   11篇
  2014年   13篇
  2013年   74篇
  2012年   17篇
  2011年   13篇
  2010年   12篇
  2009年   11篇
  2008年   11篇
  2007年   8篇
  2006年   3篇
  2005年   4篇
  2004年   4篇
  2003年   2篇
  2001年   14篇
  2000年   3篇
  1999年   2篇
  1998年   3篇
  1995年   1篇
  1992年   1篇
  1981年   1篇
  1976年   1篇
排序方式: 共有338条查询结果,搜索用时 15 毫秒
1.
2.
A rich literature exists reinforcing the notion that both perceived and received social support has stress ameliorating and protective benefits both psychologically and physiologically. However, recent literature suggests that excessive dyadic negative problem talk about an issue, a phenomenon labeled co-rumination, may reverse much of the beneficial effects of social support. Healthy young adults participated in a laboratory research study exploring the associations between co-rumination and immune system inflammatory response. Partial correlations indicated a positive association between co-rumination and C-reactive protein and a negative association between co-rumination and interleukin-6 after controlling for stress, anxiety, and temperature. Discussion focuses on the means by which co-rumination may lead to negative health outcomes.  相似文献   
3.
At the University of Maine, middle and high school teachers observed more than 250 university science, technology, engineering, and mathematics classes and collected information on the nature of instruction, including how clickers were being used. Comparisons of classes taught with (n = 80) and without (n = 184) clickers show that, while instructional behaviors differ, the use of clickers alone does not significantly impact the time instructors spend lecturing. One possible explanation stems from the observation of three distinct modes of clicker use: peer discussion, in which students had the opportunity to talk with one another during clicker questions; individual thinking, in which no peer discussion was observed; and alternative collaboration, in which students had time for discussion, but it was not paired with clicker questions. Investigation of these modes revealed differences in the range of behaviors, the amount of time instructors lecture, and how challenging the clicker questions were to answer. Because instructors can vary their instructional style from one clicker question to the next, we also explored differences in how individual instructors incorporated peer discussion during clicker questions. These findings provide new insights into the range of clicker implementation at a campus-wide level and how such findings can be used to inform targeted professional development for faculty.  相似文献   
4.
5.
6.
Research indicates that people are increasingly spending time with social media and other information communication technology. However, scholars have not fully examined how employees as holistic media consumers utilize social media in multiple contexts. Through in-depth interviews (N = 29), this study demonstrates that even as social media are embedded in organizational media use routines, employees question this technology for 2 reasons: It distracts from tasks and threatens personal privacy. These concerns often, but not exclusively, relate to employee age and the amount of time they have worked for the company. The study concludes by arguing that social media’s arrival in the workplace may exacerbate tensions and problems that are associated with presence-creep and the distortion of the work-life balance.  相似文献   
7.
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is quickly becoming a critical tool in the field of art conservation. This technique provides high-resolution spatial maps of both inorganic and organic components located within cross-sectional samples collected from works of art. With recent advances in surface analysis, ToF-SIMS can now be used to identify specific amino acids present in protein-containing materials as well as fatty acids in drying oils. For example, the detection of the ion fragment associated with the amino acid hydroxyproline can be used to confirm the use of animal glue in a paint sample. As an analytical technique, ToF-SIMS avoids the need for derivatization/silylation reagents, with no interference by the presence of pigments. Furthermore, the layered systems that are often encountered in historical paint samples remain intact throughout the analytical procedure. This allows for the co-localization of organic and inorganic species in specific layers (e.g. egg yolk paint atop a glue ground). Because of this ability to localize the analytical signal to approximately 6?µm or less, the mass spectral information can be used to produce mass-resolved and spatially-resolve images which can be correlated to previous studies of the same samples. In this study, ToF-SIMS was used to analyze a paint cross section obtained from a painting attributed to Raphael, and another from a painting by the Sienese artist Matteo di Giovanni.  相似文献   
8.
This session highlighted trends in continuing resource collections and collection management throughout the 30-year period from 1985 through 2015. Electronic resources became available in the 1990s and grew in prevalence from the 2000s through the present, changing the make-up of library collections and also how libraries measure collections and collection usage. Two librarians and two vendors shared their perspectives on these changes in collection development, describing how library collections now contain a combination of older formats and older ways of collecting data, and new, electronic content and automated ways of collecting and disseminating data about collections.  相似文献   
9.
Headship transitions in U.S. independent schools represent critical organizational events that affect multiple school constituencies, including faculty, staff, and students. With recent projections forecasting a high level of impending headship transitions in independent schools, this paper seeks to capture how second-year U.S. independent school heads (n = 16) describe their transition experiences in order to provide insights into how boards, heads, and school communities can provide meaningful supports for their incoming school leaders. Further recommendations for practice and research are also provided.  相似文献   
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号