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   831篇
  免费   18篇
  国内免费   1篇
教育   629篇
科学研究   49篇
各国文化   10篇
体育   36篇
综合类   2篇
文化理论   2篇
信息传播   122篇
  2023年   5篇
  2022年   7篇
  2021年   6篇
  2020年   21篇
  2019年   29篇
  2018年   27篇
  2017年   29篇
  2016年   29篇
  2015年   20篇
  2014年   30篇
  2013年   176篇
  2012年   23篇
  2011年   31篇
  2010年   25篇
  2009年   16篇
  2008年   23篇
  2007年   28篇
  2006年   18篇
  2005年   17篇
  2004年   12篇
  2003年   9篇
  2002年   8篇
  2001年   7篇
  2000年   10篇
  1999年   16篇
  1998年   7篇
  1997年   9篇
  1996年   5篇
  1995年   11篇
  1994年   7篇
  1993年   6篇
  1992年   11篇
  1991年   5篇
  1990年   6篇
  1989年   9篇
  1988年   12篇
  1987年   8篇
  1986年   9篇
  1985年   8篇
  1983年   5篇
  1981年   7篇
  1979年   6篇
  1978年   4篇
  1977年   5篇
  1974年   4篇
  1972年   4篇
  1969年   4篇
  1968年   11篇
  1967年   6篇
  1865年   4篇
排序方式: 共有850条查询结果,搜索用时 15 毫秒
51.
52.
The National Arts Education Archive (NAEA) is housed and maintained by the Yorkshire Sculpture Park (YSP), and managed by YSP coordinators and educators with a well‐established volunteer programme. This year, 2017, as part of the celebrations of the YSP's 40th anniversary, the Archive will hold its own exhibition entitled Treasures Revealed: a collection of items selected by people who have been involved in the Archive, whether as donors, volunteers, researchers, artists, trustees or steering group members. In parallel with the exhibition, this article aims to give voice to a selection of individuals and groups associated with the Archive, discussing their interests and experiences of it, and their thoughts on its value and importance as a repository of arts education materials, ideals and practices. Our primary motivations were to consider these different voices in relation to the purpose, direction and relevance of the NAEA today. These exchanges raise fundamental questions and debates about what art education is and what it might become, and how these historical collections, and creative engagements with it, might help to shape our contemporary thinking.  相似文献   
53.
Altmetrics have been proposed as a way to assess the societal impact of research. Although altmetrics are already in use as impact or attention metrics in different contexts, it is still not clear whether they really capture or reflect societal impact. This study is based on altmetrics, citation counts, research output and case study data from the UK Research Excellence Framework (REF), and peers’ REF assessments of research output and societal impact. We investigated the convergent validity of altmetrics by using two REF datasets: publications submitted as research output (PRO) to the REF and publications referenced in case studies (PCS). Case studies, which are intended to demonstrate societal impact, should cite the most relevant research papers. We used the MHq’ indicator for assessing impact – an indicator which has been introduced for count data with many zeros. The results of the first part of the analysis show that news media as well as mentions on Facebook, in blogs, in Wikipedia, and in policy-related documents have higher MHq’ values for PCS than for PRO. Thus, the altmetric indicators seem to have convergent validity for these data. In the second part of the analysis, altmetrics have been correlated with REF reviewers’ average scores on PCS. The negative or close to zero correlations question the convergent validity of altmetrics in that context. We suggest that they may capture a different aspect of societal impact (which can be called unknown attention) to that seen by reviewers (who are interested in the causal link between research and action in society).  相似文献   
54.
Background: Thailand is a poor but highly literate country in South‐East Asia with over 60 million people. A lot of biomedical research is undertaken but dissemination is limited. Objectives: To identify relevant Thai bibliographic databases and investigate accessibility, functionality and content, particularly in relation to randomised controlled trials (RCTs) and clinical controlled trials (CCTs). Methods: A systematic search for institutions productive of research and the databases in their libraries. Search each accessible database in both Thai and English, recording the functionality and content. Assess accessibility of the retrieved RCTs or CCTs by comparing to Pub Med holdings. Results: We found 32 different databases (29 accessible in UK) of various sizes, coverage and functionality but many with unique records of RCTs and CCTs (total, n = 781). Two hundred and nine of 781 trials were accessible on Pub Med (27%). However, 641 of the 781 trial records contain text in both English and Thai (82%) and 112 records were solely English (14%). Conclusions: Those undertaking comprehensive searches for RCTs/CCTs should, in addition to a Pub Med , search the Thai Medical Index and Thai Index Medicus databases, and the Khon Kaen University Library Catalogue.  相似文献   
55.
Although physical activity interventions have been shown to effectively modify behavior, little research has examined the potential of these interventions for adoption in real-world settings. The purpose of this literature review was to evaluate the external validity of 57 theory-based physical activity interventions using the RE-AIM framework. The physical activity interventions included were more likely to report on issues of internal, rather than external validity and on individual, rather than organizational components of the RE-AIM framework, making the translation of many interventions into practice difficult. Furthermore, most studies included motivated, healthy participants, thus reducing the generalizability of the interventions to real-world settings that provide services to more diverse populations. To determine if a given intervention is feasible and effective in translational research, more information should be reported about the factors that affect external validity.  相似文献   
56.
57.
Lean six sigma is a management methodology that firms can employ to achieve substantial improvement in supply chain performance. However, few pedagogical exercises facilitate students’ use of a comprehensive set of lean six sigma principles within a supply chain context. We describe the Airplane Supply Chain Simulation that helps students understand how lean six sigma concepts may be leveraged to improve supply chain performance. The basis of this simulation is a four‐tier supply chain, consisting of suppliers (two tiers), a manufacturer, and a customer, that produces three models of paper airplanes to meet randomly distributed customer demand. In the first of three successive runs, a highly structured simulation is executed in which supply chain roles are well defined, material flows are convoluted, and a “push” production strategy is followed. The first simulation as the “current state” and, for the second and third simulation runs, challenge competing student teams to leverage lean six sigma concepts to develop a “future state” that enables the fulfillment of all customer orders at the lowest cost. Results based on statistical analyses of survey response data from 194 MBA students show that the Airplane Supply Chain Simulation is an effective participative, team‐based learning tool.  相似文献   
58.
明媚的忧伤     
存在的焦虑,自我的丧失。生活的空虚成了我们这一代人的症候。——题记苍白的记忆两年来的流光,全埋在尘嚣里奔走,往日澄明的心境似乎也沉浊了许多。心中的那一簇火焰在狂风中摇摆,时明时灭。经常痛恨自己大部分时光都在毫无意义的琐事中,磨磨蹭蹭的踌躇中和碌碌无为的哀叹中蹉跎掉。我的生命在不断的磨合中渐渐地损伤,有时感觉自己像生活在物欲横流的海洋里一个贫困的孤岛上。或许生命总是要通过这样一个阶段:渴望进取而却怯于进取,追求乐观却得到苦闷,神圣的偶像骤然坍塌,精神在无边的荒原上流浪。消沉颓废而不甘堕落,企望解脱却又陷入重…  相似文献   
59.
60.
Conclusion The Canada-wide survey of women engineers has provided a wealth of detailed information about a still small, but rapidly growing, minority within the profession. A major source of satisfaction of these women is the interest and variety of the work they do and for which they are financially rewarded on the same scale as men. Few wives earn salaries equivalent to those of their husbands, but women engineers do. This fact may account at least in part for the egalitarian nature of their marriages. With two professional salaries coming into the household, it is possible to engage competent and reliable assistants. The proportion of women engineers who have household employees, either full-time or on a part-time basis, is many times greater than for Canadian women in general. The ability of women engineers to divide their time between family and profession seems to maximize the satisfaction they derive from each. Their use of continuing education to maintain continuity of professional interests during their short periods out of full-time employment as engineers shows careful planning and individual ingenuity. In spite of occasional instances of unfairness or perceived discrimination by an individual, women engineers report a high level of satisfaction with the profession they have chosen. Many wrote at length about why they would recommendit to other women who want an interesting, challenging, and rewarding career. They say that engineering is a great profession—especially for a woman!  相似文献   
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