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   450篇
  免费   5篇
教育   369篇
科学研究   20篇
各国文化   4篇
体育   10篇
文化理论   1篇
信息传播   51篇
  2023年   2篇
  2022年   7篇
  2021年   4篇
  2020年   10篇
  2019年   15篇
  2018年   19篇
  2017年   29篇
  2016年   18篇
  2015年   11篇
  2014年   12篇
  2013年   103篇
  2012年   14篇
  2011年   17篇
  2010年   12篇
  2009年   16篇
  2008年   11篇
  2007年   16篇
  2006年   15篇
  2005年   7篇
  2004年   8篇
  2003年   5篇
  2002年   12篇
  2001年   7篇
  2000年   8篇
  1999年   8篇
  1998年   2篇
  1997年   7篇
  1996年   3篇
  1995年   3篇
  1994年   5篇
  1992年   5篇
  1991年   4篇
  1990年   5篇
  1989年   6篇
  1988年   3篇
  1987年   2篇
  1986年   2篇
  1985年   3篇
  1984年   1篇
  1983年   1篇
  1980年   3篇
  1979年   1篇
  1978年   1篇
  1976年   2篇
  1974年   2篇
  1972年   2篇
  1970年   2篇
  1969年   1篇
  1966年   1篇
  1964年   1篇
排序方式: 共有455条查询结果,搜索用时 15 毫秒
21.
创新是一项复杂的过程并具有多面性。在众多以创新与生产率之间联系为主题的研究中,由于数据限制,往往只采用单一指标来测度创新。本文对这种方式提出了质疑,认为这种研究方法可能会系统地偏向于某类经常通过参与创新活动以达到各种商业目的的公司或产业。为了更好地测度创新,本文介绍了一种创新索引,即以潜变量模型为基础的含有多项创新指标的线性指标组合。这一尝试得到加拿大制造业公司的大量微观数据组合的支持。  相似文献   
22.
This article studies the relationship between students’ perceptions of teaching and learning in a multidisciplinary honours programme and their impact on graduate attributes acquisition. The study, conducted among 73 honours students in a Dutch research university, evaluates perceived improvement in graduate attributes through annually collected survey data pertaining to student motivation, perception of the teaching and learning environment, engagement in the programme and registered course marks. The evaluation study reveals that to the extent of the perceived development of graduate attributes, three factors play crucial roles: students’ performance motivation, the amount of teacher support in creative and critical thinking, and students’ inclination to approach the honours track as a learning community.  相似文献   
23.
This study aims to ascertain student and staff attitudes to and perceptions of audio feedback made available via the virtual learning environment (VLE) for summative assessment. Consistent with action research and reflective practice, this study identifies best practice, highlighting issues in relation to implementation with the intention of redesigning activities in the light of the findings. It utilises four case studies where audio feedback was provided to students using the Wimba voice authoring tool within Blackboard Learn+ for various types of summative assessment. The intention was to identify how and in what context audio feedback via the VLE is effective and why. The research was undertaken via a combination of techniques, including a student survey and staff reflective logs. The findings indicate that students liked the convenience, effectiveness, flexibility and personalised nature of this feedback, but raised concerns with some aspects of the technology. This paper also makes practical recommendations for the use of the feedback mechanism, focusing on the most effective use of the digital medium, and highlights directions for future research.  相似文献   
24.
Science & Education - The purpose of this study is to identify and analyze meanings that the term complexity assumes in Brazilian theses and dissertations in the field of environmental...  相似文献   
25.
Previous theoretical frameworks used to research and explain creative design processes tend to privilege individual expression and not address the context in which the process occurs. This is problematic due to the ways in which creative activities are embedded in and shaped by socio-cultural and historic contexts. In this article we focus on the ways in which cultural historic activity theory (CHAT) and its analytical activity systems can be used to reveal creative processes in context. We draw on the tools and concepts of CHAT and data from a study of visual communication design (VCD) students and lecturers situated within a transnational higher education (TNHE) context at a university in China. An analytical framework was constructed to research practices used in creative design process learning. The dynamic nature of CHAT offers design process research methods a set of analytical tools to capture the powerful parts played by artifacts and interactions within specific sociocultural and historic learning contexts.  相似文献   
26.
Youth empowerment is the main goal of sex education according to Dutch Government and NGO policies. Academics from different disciplines have argued, however, that the ideal of empowerment through education is problematic, because of the unequal power relations implicated in educational practices. Building on one-and-a-half years of online and offline ethnographic fieldwork among Dutch youth, this article argues that Dutch sex educational policies inhibit rather than encourage young people’s empowerment by allowing only a limited number of sexual knowledge building practices to thrive while making others nearly impossible. In order to facilitate young people’s empowerment, policies should aim to create space for young people to develop their own themes and priorities, to offer a multitude of perspectives, to set the pace and to use different strategies for sexual knowledge building, including learning by doing and online learning. This requires a cultural shift that involves both an openness to young people’s experimentation, and a change in existing power hierarchies based on age.  相似文献   
27.
The performance and capabilities of Web search engines is an important and significant area of research. Millions of people world wide use Web search engines very day. This paper reports the results of a major study examining the overlap among results retrieved by multiple Web search engines for a large set of more than 10,000 queries. Previous smaller studies have discussed a lack of overlap in results returned by Web search engines for the same queries. The goal of the current study was to conduct a large-scale study to measure the overlap of search results on the first result page (both non-sponsored and sponsored) across the four most popular Web search engines, at specific points in time using a large number of queries. The Web search engines included in the study were MSN Search, Google, Yahoo! and Ask Jeeves. Our study then compares these results with the first page results retrieved for the same queries by the metasearch engine Dogpile.com. Two sets of randomly selected user-entered queries, one set was 10,316 queries and the other 12,570 queries, from Infospace’s Dogpile.com search engine (the first set was from Dogpile, the second was from across the Infospace Network of search properties were submitted to the four single Web search engines). Findings show that the percent of total results unique to only one of the four Web search engines was 84.9%, shared by two of the three Web search engines was 11.4%, shared by three of the Web search engines was 2.6%, and shared by all four Web search engines was 1.1%. This small degree of overlap shows the significant difference in the way major Web search engines retrieve and rank results in response to given queries. Results point to the value of metasearch engines in Web retrieval to overcome the biases of individual search engines.  相似文献   
28.
The early identification of young children's special educational needs (SEN), as well as the development of specific strategies to support those children identified with special needs, are increasingly recognised as crucial to facilitating good adjustment to school and to ensuring that such children are helped to reach their full potential in education. Using a large national sample of young children in England whose developmental progress was followed up from pre‐school, this study investigates which child, family, home and pre‐school factors can be viewed as risk or protective factors for later SEN‐status at age 10. The experience of high‐quality pre‐school education is shown to reduce the likelihood of a child being identified as experiencing SEN in the long run. Teachers’ assessments of SEN are found to be strongly related to children's reading and mathematics attainment, but other factors also predict SEN, including a child's age within a year group.  相似文献   
29.
The Open Access movement of the past decade, and institutional repositories developed by universities and academic libraries as a part of that movement, have openly challenged the traditional scholarly communication system. This article examines the growth of repositories around the world, and summarizes a growing body of evidence of the response of academics to institutional repositories. It reports the findings of a national survey of academics which highlights the conflict between the principles and rewards of the traditional scholarly communication system, and the benefits of Open Access. The article concludes by suggesting ways in which academic libraries can alleviate the conflict between these two paradigms.  相似文献   
30.
Real time search is an increasingly important area of information seeking on the Web. In this research, we analyze 1,005,296 user interactions with a real time search engine over a 190 day period. Using query log analysis, we investigate searching behavior, categorize search topics, and measure the economic value of this real time search stream. We examine aggregate usage of the search engine, including number of users, queries, and terms. We then classify queries into subject categories using the Google Directory topical hierarchy. We next estimate the economic value of the real time search traffic using the Google AdWords keyword advertising platform. Results shows that 30% of the queries were unique (used only once in the entire dataset), which is low compared to traditional Web searching. Also, 60% of the search traffic comes from the search engine’s application program interface, indicating that real time search is heavily leveraged by other applications. There are many repeated queries over time via these application program interfaces, perhaps indicating both long term interest in a topic and the polling nature of real time queries. Concerning search topics, the most used terms dealt with technology, entertainment, and politics, reflecting both the temporal nature of the queries and, perhaps, an early adopter user-based. However, 36% of the queries indicate some geographical affinity, pointing to a location-based aspect to real time search. In terms of economic value, we calculate this real time search stream to be worth approximately US $33,000,000 (US $33 M) on the online advertising market at the time of the study. We discuss the implications for search engines and content providers as real time content increasingly enters the main stream as an information source.  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