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   24650篇
  免费   430篇
  国内免费   16篇
教育   17641篇
科学研究   2129篇
各国文化   235篇
体育   2126篇
综合类   13篇
文化理论   222篇
信息传播   2730篇
  2022年   198篇
  2021年   315篇
  2020年   456篇
  2019年   756篇
  2018年   987篇
  2017年   959篇
  2016年   830篇
  2015年   512篇
  2014年   730篇
  2013年   4833篇
  2012年   692篇
  2011年   695篇
  2010年   512篇
  2009年   508篇
  2008年   556篇
  2007年   507篇
  2006年   451篇
  2005年   427篇
  2004年   379篇
  2003年   372篇
  2002年   350篇
  2001年   487篇
  2000年   402篇
  1999年   370篇
  1998年   210篇
  1997年   217篇
  1996年   249篇
  1995年   243篇
  1994年   189篇
  1993年   208篇
  1992年   328篇
  1991年   307篇
  1990年   311篇
  1989年   302篇
  1988年   257篇
  1987年   308篇
  1986年   273篇
  1985年   308篇
  1984年   249篇
  1983年   212篇
  1982年   192篇
  1981年   166篇
  1980年   156篇
  1979年   261篇
  1978年   187篇
  1977年   173篇
  1976年   157篇
  1975年   142篇
  1974年   149篇
  1971年   140篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
251.
Induced by a literature review, this paper presents a framework of dimensions and indicators highlighting the underpinning aspects and values of social learning within teacher groups. Notions of social networks, communities of practice and learning teams were taken as the main perspectives to influence this social learning framework. The review exercise resulted in four dimensions: (1) practice, (2) domain and value creation, (3) collective identity and (4) organization. The indicators corresponding to these dimensions serve as the foundation for understanding social learning in practice. The framework of dimensions and indicators can be of assistance for researchers as well as teacher groups that aim to assess their views on social learning and analyse whether these views fit the learning goals of the group or that adjustments are required. In this way, learning processes within groups of teachers can be improved.  相似文献   
252.
OBJECTIVE: To assess: (1) ethnic differences in the health-risk behaviors, mental health problems, and adverse parenting beliefs during pregnancy of low-income Mexican American and European American women; and, (2) the extent to which these risks varied with levels of acculturation among low-income Mexican American women. METHOD: Participants were 594 primiparous, low-income, urban women. A cross-sectional design was used to compare the 331 Mexican American women to the 263 European American. Language was used to assess the level of acculturation of the Mexican American women. Interviews were used to evaluate health-risk behaviors, mental health problems, and adverse parenting beliefs. RESULTS: In comparison to European American women, Mexican American women were at lower risk for cigarette smoking during pregnancy and higher risk for adverse parenting beliefs. Among Mexican American women, Spanish speakers were at lower risk for cigarette smoking and mental health problems during pregnancy, and higher risk for adverse parenting beliefs than bilingual and English speakers. CONCLUSIONS: The findings indicate that ethnic differences in cigarette smoking and parenting beliefs during pregnancy were concentrated on the less acculturated, low-income, and primarily unmarried Spanish speaking Mexican American women. Moreover, acculturation is differentially related to cigarette smoking and parenting beliefs. Therefore, acculturation needs to be considered in the development of preventive interventions in order to appropriately target the specific needs of different sub-populations of Mexican Americans.  相似文献   
253.
Research suggests growth mindset, or the belief that knowledge is acquired through effort, may enhance women’s sense of belonging in male-dominated disciplines, like computing. However, other research indicates women who spend a great deal of time and energy in technical fields experience a low sense of belonging. The current study assessed the benefits of a growth mindset on women’s (and men’s) sense of intellectual belonging in computing, accounting for the amount of time and effort dedicated to academics. We define “intellectual belonging” as the sense that one is believed to be a competent member of the community. Whereas a stronger growth mindset was associated with stronger intellectual belonging for men, a growth mindset only boosted women’s intellectual belonging when they did not work hard on academics. Our findings suggest, paradoxically, women may not benefit from a growth mindset in computing when they exert a lot of effort.  相似文献   
254.
A theoretical model of nonscience majors' motivation to learn science was tested by surveying 369 students in a large‐enrollment college science course that satisfies a core curriculum requirement. Based on a social‐cognitive framework, motivation to learn science was conceptualized as having both cognitive and affective influences that foster science achievement. Structural equation modeling was used to examine the hypothesized relationships among the variables. The students' motivation, as measured by the Science Motivation Questionnaire (SMQ), had a strong direct influence on their achievement, as measured by their science grade point average. The students' motivation was influenced by their belief in the relevance of science to their careers. This belief was slightly stronger in women than men. Essays by the students and interviews with them provided insight into their motivation. The model suggests that instructors should strategically connect science concepts to the careers of nonscience majors through such means as case studies to increase motivation and achievement. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 44: 1088–1107, 2007  相似文献   
255.
This study examines sources of satisfaction, indicators of stress, academic performance, and reward structure in the academic careers of male and female faculty at a major midwestern state university. Faculty pairs were selected from five academic divisions. A total of 58 matched pairs were identified. Of these, 63 faculty responded, yielding data for 23 matched pairs. Subjects were mailed the Academic Career Development Survey, consisting of 144 items. Results indicated that self-reported physical and mental health, and professional and personal life satisfaction were high for both males and females. Both males and females placed high importance on their career and on marriage/other intimate relationships; however, both reported high levels of dissatisfaction with these factors. Gender differences were found in both satisfaction and type of stress reported; no gender differences were found in composite teaching and research performance indices. Salary data, obtained for 42 matched pairs, indicated similar salary levels for men and women. Results were discussed with respect to prior research on gender differences and the academic career.  相似文献   
256.
257.
This article explores how creative visual imagination and creative thinking can help children to construct mental models of space. A mixed-method study, integrating quantitative and qualitative approaches and involving 98 five-year-old children (54 girls and 44 boys) demonstrated that creative visual imagination, rather than creative thinking, is linked with the knowledge and understanding of space. These results support the notion that creative visual imagination contributes to improvements in children's understanding of basic astronomical concepts. Interestingly, creative thinking was not associated with understanding and knowledge of cosmic phenomena in models taking into account creative imagination. The qualitative analysis showed differences in children's representations of space. We discuss the consequences of these findings for science education, particularly the teaching of elementary astronomy.  相似文献   
258.
259.
As the American population continues to become more diverse there is a need to provide children in early education with factual information about all ethnic groups to decrease prejudice. First, teachers must examine their own beliefs prior to implementing a multicultural approach into the curriculum. Three questions are presented that will assist teachers in evaluating their views and behaviors toward ethnic groups. Informative resources are provided for teachers to educate themselves, parents, and students. Through children's literature, instructional materials, and Internet sources, teachers can promote more positive attitudes among students and educate children to be respectful and accept the individuality of others.  相似文献   
260.
Instruction, even when prepared according to sound instructional design principles, often does not stimulate students' motivation to learn. A motivational intervention, developed according to the processes outlined inthe ARCS model of motivational design, was implemented and tested following the conventions of an embedded single-case study. It was tested with a group of 15 adults participating in a staff development course conducted within the Mozambique Ministry of Education. Results, based on concurrent and discriminant analysis of both quantitative and qualitative data, indicated that the primary treatment, motivational messages, had positive effects on student attitude and performance. It may be concluded that the specific intervention and the ARCS model which provided the basis for designing it provide a sound basis for positively influencing student motivation to learn.  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