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   2920篇
  免费   363篇
教育   2915篇
科学研究   4篇
各国文化   93篇
体育   18篇
文化理论   4篇
信息传播   249篇
  2021年   32篇
  2020年   50篇
  2019年   106篇
  2018年   109篇
  2017年   144篇
  2016年   93篇
  2015年   157篇
  2014年   167篇
  2013年   948篇
  2012年   129篇
  2011年   146篇
  2010年   155篇
  2009年   124篇
  2008年   144篇
  2007年   89篇
  2006年   80篇
  2005年   77篇
  2004年   68篇
  2003年   29篇
  2002年   28篇
  2001年   32篇
  2000年   33篇
  1999年   34篇
  1998年   21篇
  1997年   17篇
  1996年   28篇
  1995年   30篇
  1994年   18篇
  1993年   18篇
  1992年   19篇
  1991年   16篇
  1990年   29篇
  1989年   11篇
  1988年   14篇
  1987年   15篇
  1986年   10篇
  1985年   12篇
  1984年   8篇
  1983年   10篇
  1982年   10篇
  1981年   3篇
  1980年   3篇
  1979年   2篇
  1978年   5篇
  1976年   1篇
  1975年   1篇
  1974年   2篇
  1972年   2篇
  1971年   1篇
  1969年   2篇
排序方式: 共有3283条查询结果,搜索用时 15 毫秒
861.
The purpose of this study was to compare the effects of a traditional training program with a fluency‐building training program on the acquisition of automotive product knowledge in a lab setting. The effects were assessed by how accurately and quickly participants responded on a product‐knowledge test. Results indicated that participants who completed the fluency training responded faster and more accurately than control groups immediately after the study. However, the difference between the fluency group and the group that received study objectives disappeared when retention was assessed several weeks after training. The difference remained between these groups and a group that did not receive study objectives. The results were used to modify globally delivered training. This study extended previous studies by examining the effects of training designed to teach product knowledge to sales representatives in automotive dealerships and illustrates the benefits of collaboration between academic researchers and professional trainers.  相似文献   
862.
863.
864.
865.
Thirty‐six ophthalmology journals indexed by the Science Citation Index (SCI) in 2003 were selected to study the role of the ‘papers cited rate’ in scientific journal evaluation. The 2‐year, 3‐year, 5‐year, 8‐year, and 10‐year cited rates of these papers were calculated to analyze statistically the correlations with impact factor, 5‐year impact factor, immediacy index, eigenfactor score, article influence score, and total cites. The results of questionnaires sent to 8,525 ophthalmologists were used to analyse the correlations between the papers cited rates for different years and traditional bibliometric indicators. The results showed that eigenfactor score and total cites were better than other indicators, and impact factor was better than the 5‐year impact factor. The 2‐year and 3‐year cited rates of papers were reasonable for evaluating science journals, and the 2‐year cited rate was better than the 3‐year cited rate. The 5‐year (and more than 5 years) cited rates were not significant in evaluating science journals.  相似文献   
866.
Maintaining current, relevant curriculum in undergraduate Food Microbiology courses is essential for training future experts in food quality and safety. Having an understanding of the fundamental techniques (for example, polymerase chain reaction [PCR]) that are used in the food industry and regulatory agencies is critical for students entering the workforce. The purpose of this study was to assess the efficacy of integrating molecular methods into an undergraduate Food Microbiology course in both lecture and laboratory settings. Modules on PCR and pulsed‐field gel electrophoresis (PFGE), both of which are currently used by government agencies and the food industry to investigate the presence and persistence of foodborne pathogens, were developed, introduced, and evaluated among 269 students over 4 y. Multiple teaching and learning styles were incorporated through (i) traditional lecture format on the basics of PCR and PFGE; (ii) hands‐on group activities to build upon the lecture instruction; (iii) performing PCR and PFGE in the laboratory; and (iv) group discussions to analyze results from laboratory exercises. Pre‐ and postinstruction evaluations revealed significant increases in understanding and application of both methods in lecture and laboratory settings as demonstrated by 0.60 and 0.51 mean normalized gains for respective PCR and PFGE lectures and 0.50 and 0.56 mean normalized gains in respective labs. Academic year significantly impacted score improvement, potentially due to hidden factors, such as previous exposure to material and student aptitude. This study provides the platform for successful introduction of molecular techniques in an undergraduate Food Microbiology course. The guidelines and materials developed by our group are publicly available for use by other institutions.  相似文献   
867.
Although considerable work has been done to develop new educational innovations, few have found widespread acceptance in the classroom. To improve the likelihood of adoption of educational innovations, researchers need to understand why some innovations are adopted and routinely used, while others are not. An initial aspect of the diffusion of innovations, as defined in the classical sociological literature, involves the communication of ideas and concepts related to innovations between individuals. This article presents an expert panel's answer to the following question: “What are the most important characteristics that relate to the dissemination of educational innovations?” As dissemination is a critical facet of the diffusion of an innovation, 45 researchers who received technology and engineering grants from the National Science Foundation (NSF) participated in a Delphi study designed to address this research question. In three rounds, the experts identified and ranked 11 characteristics of educational innovations, 6 characteristics of students, 13 characteristics of faculty members, and 5 characteristics of administrators that can relate to the successful dissemination of educational innovations. The results of this study led to the formation of a Characteristics of Dissemination Success (CODS) framework. This framework offers useful guidance for educational innovators seeking a better understanding of the influences on the dissemination of educational innovations.  相似文献   
868.
869.
870.
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