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   180篇
  免费   5篇
教育   139篇
科学研究   10篇
体育   23篇
文化理论   3篇
信息传播   10篇
  2022年   3篇
  2021年   4篇
  2020年   8篇
  2019年   13篇
  2018年   29篇
  2017年   11篇
  2016年   8篇
  2015年   5篇
  2014年   8篇
  2013年   30篇
  2012年   5篇
  2011年   10篇
  2010年   7篇
  2009年   3篇
  2008年   4篇
  2007年   6篇
  2006年   3篇
  2005年   3篇
  2004年   2篇
  2003年   3篇
  2002年   1篇
  2000年   1篇
  1998年   4篇
  1996年   1篇
  1992年   1篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1986年   1篇
  1984年   1篇
  1982年   2篇
  1979年   1篇
  1976年   1篇
  1975年   1篇
  1942年   1篇
排序方式: 共有185条查询结果,搜索用时 15 毫秒
171.
172.
173.
To perform, new technology-based firms (NTBFs) need to develop value for customers that distinguish them from others in the market. Therefore, the development of novelty-oriented value propositions are important, and may be influenced by several factors. We argue that the propensity to become more novelty-oriented can be influenced by an internal drive to grow (growth orientation) and by external contributions (business networks). Hence, the purpose of this paper is to analyse how business networks and growth orientation effects on the novelty orientation of NTBF value propositions. Based on survey data from 401 NTBFs founded between 2013 and 2015, in the nascent start-up phase novelty-oriented value propositions of NTBFs positively relate to informal (management) networks, as well as founders' attitudes towards growth. Thus, such networks and attitudes from founders should be supported in the very early phases of start-up if novelty orientation is to be preferred as a performance determinant.  相似文献   
174.
OBJECTIVE: This case study examined children's reports from an obscene phone call (i.e., a verbal sexual abuse). We investigated which type of information the children reported, the completeness and accuracy of the children's statements, and whether there were systematic patterns in terms of memory distortions and omissions. METHOD: The completeness and the accuracy of the children's statements were examined by matching 64 children's statements given during police interviews with a detailed documentation of each phone call, made by the perpetrator during the actual phone calls. RESULTS: All children remembered the phone call per se, but they were found to omit almost all of the sexual and sensitive information (perpetrator's questions and statements) and about 70% of the neutral information given by the perpetrator. However, the children were accurate in the information they did report. CONCLUSIONS: The fact that the children did remember more of the neutral information suggests that they actually remembered the sexual information as well, but that they chose not to report it. Results indicate that children who have been sexually abused may remember more than they report in an initial interview. One possible underlying reason is that children experience shame or embarrassment.  相似文献   
175.
176.
177.
178.
In this paper, different perspectives on the role of the teacher in a classroom equipped with personal digital assistants (PDAs) are presented. We report on four classroom studies conducted in two countries, Norway and the USA. The overall aim is to understand the use of new tools in different contexts. The key question that we explore concerns the teachers’ pedagogical use of the new tool and why certain tools are adopted and others are not. In one case, the activities simulated the affordances and constraints of the tools used prior to the PDA. In the other case, the activities harnessed the affordances and constraints offered by the successor tool, the PDA. We raise the question as to why these tools were used in two different ways. We analyse our findings in terms of sociocultural theory and concepts of human–computer interaction. Finally, we summarize our results and discuss some educational implications.  相似文献   
179.
The empirical study, in this article, involved 42 students (ages 14–15), who used the urban simulation computer game SimCity 4 to create models of sustainable future cities. The aim was to explore in what ways the simulated “real” worlds provided by this game could be a potential facilitator for science learning contexts. The topic investigated is in what way interactions in this gaming environment, and reflections about these interactions, can form a context where the students deal with real world problems, and where they can contextualise and apply their scientific knowledge. Focus group interviews and video recordings were used to gather data on students’ reflections on their cities, and on sustainable development. The findings indicate that SimCity 4 actually contributes to creating meaningful educational situations in science classrooms, and that computer games can constitute an important artefact that may facilitate contextualisation and make students’ use of science concepts and theories more explicit.  相似文献   
180.
Abstract

A large proportion of a child's day is spent at school interacting with certain physical surroundings, teachers, and school friends. Thus, schools could have a marked impact on establishing physical activity habits. The aim of the present study was to assess between-school variation in physical activity, aerobic fitness, and organized sports participation. Altogether, we tested 1766 nine- and fifteen-year-old children attending 242 school classes at 35 different schools in Denmark in 1997–2003. The intra-class correlation coefficient (ICC) for objectively assessed physical activity ranged between 0.06 and 0.18 depending on the dimension of physical activity and the time considered (i.e. school time vs. leisure time). For aerobic fitness, an ICC of 0.10 was observed, whereas that for organized sports participation ranged between 0.01 and 0.10 depending on the age group. Studying between-school variation in physical activity provides information about the extent to which children adjust their physical activity habits according to the social and environmental circumstances that they share, and helps to plan future school-based physical activity studies, especially in terms of sample size and power calculation.  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