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   9623篇
  免费   118篇
  国内免费   6篇
教育   6479篇
科学研究   1132篇
各国文化   326篇
体育   724篇
综合类   5篇
文化理论   67篇
信息传播   1014篇
  2022年   72篇
  2021年   110篇
  2020年   140篇
  2019年   203篇
  2018年   244篇
  2017年   267篇
  2016年   235篇
  2015年   162篇
  2014年   192篇
  2013年   1666篇
  2012年   209篇
  2011年   201篇
  2010年   189篇
  2009年   184篇
  2008年   237篇
  2007年   216篇
  2006年   182篇
  2005年   173篇
  2004年   182篇
  2003年   128篇
  2002年   116篇
  2001年   154篇
  2000年   182篇
  1999年   158篇
  1998年   90篇
  1997年   84篇
  1996年   75篇
  1993年   86篇
  1992年   138篇
  1991年   149篇
  1990年   149篇
  1989年   157篇
  1988年   120篇
  1987年   118篇
  1986年   117篇
  1985年   156篇
  1984年   127篇
  1983年   119篇
  1982年   99篇
  1981年   85篇
  1980年   94篇
  1979年   145篇
  1978年   89篇
  1977年   91篇
  1976年   79篇
  1975年   76篇
  1974年   88篇
  1973年   80篇
  1971年   74篇
  1968年   74篇
排序方式: 共有9747条查询结果,搜索用时 15 毫秒
131.
Research in Science Education - The purpose of this research is to investigate the effect of using argumentation and problem-based learning approaches on the development of environmentally...  相似文献   
132.
We investigated the usefulness of the Over-Claiming Questionnaire (OCQ) as a measure of cognitive abilities. In OCQs respondents are asked to rate their familiarity with items of academic or everyday knowledge (Paulhus, Harms, Bruce, & Lysy, 2003). Some items exist in reality (reals), and others do not (foils). We developed four OCQs, each consisting of 40 reals and 8 foils from the domains of Science, Humanities and Civics. The OCQs were administered in a longitudinal rotation design to 112 participants who attended the 9th school grade at the beginning of the study. In latent variable regression analyses 53% of variation in the reals could be explained by fluid and crystallized intelligence and over-claiming as indicated by responses to foils. Further variation in responses to reals and foils was explained by intellectual engagement. Our results show that self-reported knowledge, although positively related to measures of ability, to a large extent reflects over-claiming.  相似文献   
133.
Learners studying mechanical or technical processes via dynamic visualizations often fail to build an accurate mental representation of the system’s movements. Based on embodied theories of cognition assuming that action, perception, and cognition are closely intertwined, this paper proposes that the learning effectiveness of dynamic visualizations could be enhanced by grounding the movements of the presentation in people’s own bodily experiences during learning. We discuss recent research on embodied cognition and provide specific strategies for how the body can be used to ground movements during the learning process: (1) making or observing gestures, (2) manipulating and interacting with objects, (3) using body metaphors, and (4) using eye movements as retrieval cues. Implications for the design of dynamic visualizations as well as directions for future research are presented.  相似文献   
134.
RESEARCH FINDINGS: The purpose of this study was to examine the relations of children's effortful control and quality of relationships with teachers to school attitudes longitudinally in an ethnically diverse and economically disadvantaged sample. Data were collected as part of a larger intervention project during mid-fall, winter, and late spring (ns = 823, 722, and 758, respectively) for 2 cohorts of 3- to 5-year-olds (collected during 2 different school years). Children's effortful control was assessed in the fall with parents' and teachers' reports and 2 behavioral measures. Teacher-child relationship quality was assessed mid-year with teachers' reports of closeness and conflict. Attitudes toward school were assessed in late spring using teachers' and students' reports of school avoidance and liking. Effortful control, in general, was positively correlated with teacher-child closeness and school liking and negatively correlated with conflict and school avoidance. Using structural equation modeling and controlling for sex and ethnicity, we found that effortful control was positively related to teacher-child relationship quality, which in turn was positively related to school attitudes. Furthermore, the relation of effortful control to school attitudes was mediated by teacher-child relationship quality. PRACTICE OR POLICY: Results provide evidence for the importance of relational processes that take place within the classroom context and have implications for teachers and clinicians working to increase school success in ethnic minority and low-income children.  相似文献   
135.
This study employed a qualitative research design to investigate how instructional designers use evaluation in everyday design practice. While past research has examined how designers spend their time, how they generally make decisions, and expert-novice differences, little attention has been paid to use of context, input, process, or product evaluation, from the perspective of practicing designers. Based on interviews of practitioners, our findings included ten themes regarding how designers use evaluation to improve their products. While these results substantiate to some degree the claim that practitioners believe clients will not pay for formal evaluations, they also suggest that practitioners use evaluation in important but less formal ways. Other conclusions regarding the role of evaluation in design are provided and future directions for training and research are discussed.  相似文献   
136.
Given the important role of parent-youth communication in adolescent well-being and quality of life, we sought to examine the relationship between specific communication variables and youth perceived quality of life in general and as a deaf or hard-of-hearing (DHH) individual. A convenience sample of 230 youth (mean age = 14.1, standard deviation = 2.2; 24% used sign only, 40% speech only, and 36% sign + speech) was surveyed on communication-related issues, generic and DHH-specific quality of life, and depression symptoms. Higher youth perception of their ability to understand parents' communication was significantly correlated with perceived quality of life as well as lower reported depressive symptoms and lower perceived stigma. Youth who use speech as their single mode of communication were more likely to report greater stigma associated with being DHH than youth who used both speech and sign. These findings demonstrate the importance of youths' perceptions of communication with their parents on generic and DHH-specific youth quality of life.  相似文献   
137.
This paper aims to make a contribution to the stream of literature on action research by describing a longitudinal collaborative research project which evolved out of a long-term, participation partnership with Volvo Cars. The collaboration was aimed at developing innovation capabilities in the company and accumulating knowledge on how capabilities are developed. The paper provides insights into the design of collaborative research projects to enable mutual, sustainable learning. It draws on key notions in the literature on collaborative management research and action learning, highlighting the research design of the project at Volvo Cars and its relations to action learning. The paper describes how the research design opened the way to establishing a learning system at Volvo Cars while simultaneously generating new scientific knowledge within the area of innovation capabilities. The paper provides rich and detailed data on a collaborative research setting and highlights key aspects related to organizing and undertaking collaborative research.  相似文献   
138.
139.
The design and evaluation of an interactive informational program is outlined in this article. Also reported is an integrated research study which examines the effects of differing levels of orientation to an interactive informational program on user confidence and attitudes. Research results indicate that a full orientation providing information, examples, practice, and feedback for various program options can lead to greater levels of user comfort than a more limited type of orientation providing brief information and single examples, and with equally positive user attitudes. However, subjects receiving the full orientation spent less time in the actual program and accessed a smaller proportion of available program segments than did their limited-orientation counterparts. No differences in efficiency were noted between the two groups in the use of the program. Sex differences noted in attitudes and time expended are discussed, with reference to a possible preference by females for greater levels of program support. Recommendations are offered for interactive program developers and future research directions are suggested. This work was supported in part by Summer Research Awards provided by the Curry School of Education at the University of Virginia. I gratefully acknowledge the assistance of Richard Berdel, Cheryl Wissick, and Maureen Glasser in the data collection, and of theETR&D editor and anonymous reviewers for their comments on a draft of this article.  相似文献   
140.
A technique is presented for partitioning N students into K groups of fixed sizes using a given measure of proximity for all student pairs. The measure of proximity is typically calculated from a set of variables, such as completed curriculum units or learning style, and constitutes the data needed for a criterion of partition fit. This latter index is explicitly defined by the sum of within-group proximities and when used in conjunction with the optimization procedure discussed, homogeneous groups can be obtained that satisfy externally imposed size requirements. Finally, a simple generalization is suggested for the related task of grouping students to meet upper limit size constraints only.  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