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   3863篇
  免费   420篇
  国内免费   1篇
教育   3746篇
科学研究   26篇
各国文化   99篇
体育   55篇
文化理论   18篇
信息传播   340篇
  2022年   5篇
  2021年   39篇
  2020年   73篇
  2019年   129篇
  2018年   147篇
  2017年   175篇
  2016年   129篇
  2015年   178篇
  2014年   186篇
  2013年   1214篇
  2012年   147篇
  2011年   174篇
  2010年   178篇
  2009年   152篇
  2008年   178篇
  2007年   104篇
  2006年   99篇
  2005年   104篇
  2004年   90篇
  2003年   45篇
  2002年   43篇
  2001年   47篇
  2000年   52篇
  1999年   43篇
  1998年   25篇
  1997年   38篇
  1996年   50篇
  1995年   43篇
  1994年   28篇
  1993年   33篇
  1992年   27篇
  1991年   23篇
  1990年   38篇
  1989年   22篇
  1988年   24篇
  1987年   19篇
  1986年   23篇
  1985年   29篇
  1984年   17篇
  1983年   21篇
  1982年   14篇
  1981年   12篇
  1980年   13篇
  1979年   9篇
  1978年   6篇
  1977年   7篇
  1976年   6篇
  1975年   3篇
  1972年   3篇
  1923年   2篇
排序方式: 共有4284条查询结果,搜索用时 15 毫秒
31.
There is a crisis of valuation practices in the current academic life sciences, triggered by unsustainable growth and “hyper-competition.” Quantitative metrics in evaluating researchers are seen as replacing deeper considerations of the quality and novelty of work, as well as substantive care for the societal implications of research. Junior researchers are frequently mentioned as those most strongly affected by these dynamics. However, their own perceptions of these issues are much less frequently considered. This paper aims at contributing to a better understanding of the interplay between how research is valued and how young researchers learn to live, work and produce knowledge within academia. We thus analyze how PhD students and postdocs in the Austrian life sciences ascribe worth to people, objects and practices as they talk about their own present and future lives in research. We draw on literature from the field of valuation studies and its interest in how actors refer to different forms of valuation to account for their actions. We explore how young researchers are socialized into different valuation practices in different stages of their growing into science. Introducing the concept of “regimes of valuation” we show that PhD students relate to a wider evaluative repertoire while postdocs base their decisions on one dominant regime of valuing research. In conclusion, we discuss the implications of these findings for the epistemic and social development of the life sciences, and for other scientific fields.  相似文献   
32.
33.
This study examined the direct association between parental educational expectations and adolescents’ academic self‐efficacy, as well as the moderating influence of parental academic socialization messages. Participants were 148 Latino parent–adolescent dyads with the majority of Mexican origin (80.4%). Most of the parent participants were mothers (85.8%). Adolescents were 13 (46%) or 14 (54%) years of age, and 53% identified as female. Adolescents reported their academic self‐efficacy and perceptions of their parents’ educational expectations; parents reported on their academic socialization messages of shame/pressure and effort regarding academics. The results suggest that, after accounting for parents’ level of education and immigrant status, parental educational expectations were positively associated with adolescent academic self‐efficacy. This association was stronger among adolescents whose parents reported transmitting fewer messages of shame/pressure and academic effort. These results point to the importance of nuances in the content and type of academic socialization messages within Latino families.  相似文献   
34.
35.
The author raises questions about ethnographic methodology through exploring the implications of using observations produced by his colleagues about his office as data for his research. This process blurred the boundaries between researcher, method and the object and subject of research. It meets some criteria for ethnography and not others, and does not evidence clear definitional boundaries for any sub-genre such as autoethnography or collaborative authoethnography. Besides raising definitional challenges and the blurring of roles in research, the study also illustrates how the methodology revealed tensions over collegial trust, boundaries and privacy. The author's colleagues exposed aspects of the author's identity that were opaque and even invisible to the author. The author accordingly raises questions about the locus of ethical concern. Thus, issues of roles, definition, trust, boundaries, privacy and method were entwined.  相似文献   
36.
Empirical evidence suggests that educational attainment nurtures people's social outcomes and promotes active participation in society and stability. However, it is unclear to what extent other types of human capital also correlate with social outcomes. Hence, we explored the opportunity offered by the PIAAC survey through its provision of information on educational attainment, observed individual key skills proficiency, and participation in adult education and training (adult lifelong learning). We therefore studied the association between these human capital variables and social outcomes, and more specifically interpersonal trust and participation in volunteering activities. Results revealed that these social outcomes were affected not only by the formal qualification obtained, determined by the education variable, but also throughout the life‐cycle. Indeed, education and training when undertaken during adult life have a significant impact, especially on volunteering. The fact that the skill proficiency also plays a significant role is extremely relevant, as skills are more likely to change over the life‐cycle, either in a positive or negative way. Whilst the formal education received is constant after exiting the educational system, skills reflect competences more accurately: first, because those with the same level of education may have different skill levels because of differences in the quality of education or ability; second, because skills can vary over time. For example, they may increase with work experience or informal education, or decrease as a result of depreciation and ageing. These findings suggest that social outcomes are prone to be affected by many factors other than formal education, suggesting that policy makers can implement recommendations even after formal education has been completed.  相似文献   
37.
A series of studies extended psychometric research on the Adjustment Scales for Preschool Intervention (ASPI). The ASPI is a multidimensional measure of preschool emotional and behavioral adjustment for use within formal early childhood educational programs. These studies used a multiple method, multisource approach to provide additional evidence for the reliability and validity of the ASPI. Findings documented inter‐rater reliability of the ASPI across key informants within early childhood educational programs—teachers and teacher assistants. Findings supported concurrent validity of the ASPI with direct observations of preschool classroom adjustment problems and the developmentally salient constructs of temperament and emotion regulation. Implications for policy, practice, and future research are discussed. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 725–736, 2004.  相似文献   
38.
Evidence of comparability is generally needed whenever there are variations in the conditions of an assessment administration, including variations introduced by the administration of an assessment on multiple digital devices (e.g., tablet, laptop, desktop). This article is meant to provide a comprehensive examination of issues relevant to the comparability of scores across devices, and as such provide a starting point in designing and implementing a research agenda to support the comparability of any assessment program. This work starts with a conceptual framework rooted in the idea of a comparability claim—a conceptual statement about how each student is expected to perform on each of the devices in question. Then a review of the available literature is provided, focusing on how aspects of the devices (touch screens, keyboards, screen size, and displayed content) and aspects of the assessments (content area and item type) relate to student performance and preference. Building on this literature, recommendations to minimize threats to comparability are then provided. The article concludes with ways to gather evidence to support claims of comparability.  相似文献   
39.
The current study deals with the development of system thinking skills at the junior high school level. The sample population included about 50 eighth‐grade students from two different classes of an urban Israeli junior high school who studied an earth systems‐based curriculum that focused on the hydro cycle. The study addressed the following research questions: (a) Could the students deal with complex systems?; (b) What has influenced the students' ability to deal with system perception?; and (c) What are the relationship among the cognitive components of system thinking? The research combined qualitative and quantitative methods and involved various research tools, which were implemented in order to collect the data concerning the students' knowledge and understanding before, during, and following the learning process. The findings indicated that the development of system thinking in the context of the earth systems consists of several sequential stages arranged in a hierarchical structure. The cognitive skills that are developed in each stage serve as the basis for the development of the next higher‐order thinking skills. The research showed that in spite of the minimal initial system thinking abilities of the students most of them made some meaningful progress in their system thinking skills, and a third of them reached the highest level of system thinking in the context of the hydro cycle. Two main factors were found to be the source of the differential progress of the students: (a) the students' individual cognitive abilities, and (b) their level of involvement in the knowledge integration activities during their inquiry‐based learning both indoors and outdoors. © 2005 Wiley Periodicals, Inc.  相似文献   
40.
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