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   3501篇
  免费   48篇
  国内免费   2篇
教育   2898篇
科学研究   48篇
各国文化   28篇
体育   287篇
综合类   3篇
文化理论   9篇
信息传播   278篇
  2023年   13篇
  2022年   14篇
  2021年   19篇
  2020年   36篇
  2019年   78篇
  2018年   84篇
  2017年   106篇
  2016年   83篇
  2015年   57篇
  2014年   141篇
  2013年   851篇
  2012年   119篇
  2011年   125篇
  2010年   109篇
  2009年   127篇
  2008年   116篇
  2007年   89篇
  2006年   105篇
  2005年   55篇
  2004年   46篇
  2003年   42篇
  2002年   32篇
  2001年   30篇
  2000年   39篇
  1999年   40篇
  1998年   36篇
  1997年   35篇
  1996年   66篇
  1995年   111篇
  1994年   71篇
  1993年   66篇
  1992年   81篇
  1991年   63篇
  1990年   48篇
  1989年   27篇
  1988年   19篇
  1987年   13篇
  1986年   11篇
  1985年   11篇
  1984年   16篇
  1983年   9篇
  1982年   17篇
  1981年   14篇
  1980年   26篇
  1979年   55篇
  1978年   39篇
  1977年   47篇
  1976年   22篇
  1975年   24篇
  1974年   23篇
排序方式: 共有3551条查询结果,搜索用时 15 毫秒
71.
72.
This study explores the impact of one-to-one computing on student achievement in Ohio high schools as measured by performance on the Ohio Graduation Test (OGT). The sample included 24 treatment schools that were individually paired with a similar control school. An interrupted time series methodology was deployed to examine OGT data over a period of 5 to 8 years. Overall student performance and content-specific achievement in math, reading, science, social studies, and writing were not significantly affected by the introduction of 1:1 computing. Treatment schools using a netbook device produced the greatest overall change in scores.  相似文献   
73.
Community integration has increasingly become the focus of research and practice in the field of intellectual disability. Recent research has demonstrated that community integration needs to be more than simply living within a community, people need to use the community and feel like they belong. This study pioneers the use of a sense of community measure to better understand the degree to which feelings of belonging are associated with quality of life. One hundred and thirty two students from both urban and rural schools participated in this study. Half of them had an intellectual disability and the remainder were matched peers without a disability. Life satisfaction scores for adolescents with an intellectual disability were found to correlate significantly with reported levels of activity, friends and support in the neighbourhood. People with an intellectual disability reported lower usage of some community facilities and significantly lower social belonging and empowerment than their matched nondisabled peers. The groups did not differ significantly on the sense of community measure and the above patterns were true for both urban centres and rural towns.  相似文献   
74.
Es gibt einige Hinweise darauf, dass Vorstellungen vom Lehren und Lernen sowohl für das Handeln der Lehrkr?fte im Unterricht als auch für Zielkriterien auf der Ebene der Schüler eine Rolle spielen. Dabei gelten konstruktivistisch orientierte Sichtweisen als besonders günstig. Empirische Untersuchungen dazu gibt es jedoch bislang nur auf einzelne fachdidaktische Inhaltsbereiche bezogen. In der vorliegenden Studie werden konstruktivistisch orientierte Lehrereinstellungen mit Merkmalen des Unterrichts (?ffnung des Unterrichts im Hinblick auf Entscheidungsm?glichkeiten für Schüler/-innen und Strukturierung des Unterrichts) sowie mit Einsch?tzungen der Schüler/-innen (Selbstbestimmungsempfinden und Interessantheit des Unterrichts) in Beziehung gesetzt. Die Ergebnisse best?tigen die Theorie: In den Klassen der Lehrer/-innen mit überwiegend konstruktivistischen Vorstellungen von Lernen und Lehren gibt es mehr Freir?ume, ohne dass der Unterricht weniger strukturiert abl?uft. Zudem empfinden sich die Schüler/-innen als selbstbestimmter und sch?tzen den Unterricht als interes-santer ein.  相似文献   
75.
通过对美国及德国的十多年研究表明,对于创新及合作网络的投资有利于促进高技术行业企业不断进步和发展.这些高技术行业包括电信、电脑设备及生物工艺的行业.研究表明政府政策在促进竞争及支持地区合作网络发展中起到了极其重要的作用.  相似文献   
76.
A century before the outbreak of bovine spongiform encephalopathy (BSE), Great Britain and North America grappled with pleuro-pneumonia - a disease in cattle that had equally maddening consequences. Towards the end of the 19th century, this condition was at the heart of a transatlantic trade dispute that lasted for decades and attracted the attention of livestock farmers, diplomats, shipping moguls, veterinarians, public health regulators and journalists the world over. Scientific controversy aggravated the situation when there were doubts about the scientific judgment of Privy Council veterinary officials, who were simultaneously conducting disease-diagnosis activities and pushing for tighter regulations at British ports. At this point, William Williams, principal of the New Veterinary College in Edinburgh, waded into this troubled arena. His strong convictions spawned a long-running disagreement with the British Government over the diagnoses of pleuro-pneumonia in cattle imported from the USA and Canada.  相似文献   
77.
Abstract

Canadian participation in the Program for Cooperative Cataloging began in 1998 when Memorial University of Newfoundland joined NACO to counter the lack of locally relevant authority data. Different circumstances operated for each of the early adopters. McGill University joined SACO first, in 1999, and NACO only in 2009. Concordia University joined NACO in 2011. Other libraries joined forces through the Canada Funnel, established in 2005. Since 2015, the number of independent members has grown, and more Canadians have begun participating in the governance and working groups of the PCC. This coincides with increased interest in internationalization within the PCC itself.  相似文献   
78.
Satisfying clinical information needs remains a major challenge in medicine, underscored by recent studies showing high medical error rates and suboptimal physician adherence to evidence-based practice guidelines. Advanced clinical decision support systems can improve practitioner performance and patient outcomes. Similarly, integrating online information resources into electronic health records (EHRs) shows great potential for positively impacting health care quality. This paper explores the evolution and current status of knowledge-based resource linkages within EHRs, including the benefits and drawbacks, as well as the important role librarians can play in this process.  相似文献   
79.
OBJECTIVES: The United Arab Emirates is witnessing a rapid development in population and infrastructure, leading to an expansion in the educational field and the health care system, including universities, hospitals and research institutes. One potential outcome of this development is an increase in biomedical research publications. This was examined in this study. METHOD: Searches were made of three databases; PubMed, Current Contents and embase. All records from these databases related to the Emirates were downloaded and cross-referenced. Duplications were removed as well as erroneous records. A total of 1369 publications during 1998-2004 were obtained. RESULTS: Analysis of these records revealed that the Faculty of Medicine and Health Sciences, located at the federal University, was responsible for 48% of all biomedical publications. All hospitals together accounted for 24%, while other universities and other research institutes accounted for 13 and 14% respectively. Further analysis revealed that there had been no further growth in the number of publications since 1998. This is in contrast to the increasing number of institutions that have been set up in the 1998-2004 period; from 29 to 112. CONCLUSION: The Emirates are witnessing a rapid development in universities, colleges, hospitals and research centres. The ratio of publications, as yet, has not kept up with this development. The enormous growth in institutes, however, may, in time, herald an Arabian renaissance in scientific activity and related publications.  相似文献   
80.
In an effort to provide high-quality preschool education, policymakers are increasingly requiring public preschool teachers to have at least a Bachelor's degree, preferably in early childhood education. Seven major studies of early care and education were used to predict classroom quality and children's academic outcomes from the educational attainment and major of teachers of 4-year-olds. The findings indicate largely null or contradictory associations, indicating that policies focused solely on increasing teachers' education will not suffice for improving classroom quality or maximizing children's academic gains. Instead, raising the effectiveness of early childhood education likely will require a broad range of professional development activities and supports targeted toward teachers' interactions with children.  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