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   2295篇
  免费   23篇
教育   1706篇
科学研究   150篇
各国文化   19篇
体育   262篇
综合类   2篇
文化理论   36篇
信息传播   143篇
  2023年   21篇
  2022年   45篇
  2021年   55篇
  2020年   95篇
  2019年   158篇
  2018年   183篇
  2017年   177篇
  2016年   157篇
  2015年   118篇
  2014年   103篇
  2013年   482篇
  2012年   84篇
  2011年   69篇
  2010年   45篇
  2009年   50篇
  2008年   47篇
  2007年   44篇
  2006年   33篇
  2005年   35篇
  2004年   28篇
  2003年   32篇
  2002年   22篇
  2001年   19篇
  2000年   10篇
  1999年   10篇
  1998年   11篇
  1997年   7篇
  1996年   16篇
  1995年   13篇
  1994年   13篇
  1993年   12篇
  1992年   8篇
  1991年   11篇
  1990年   8篇
  1989年   10篇
  1988年   7篇
  1987年   6篇
  1986年   4篇
  1985年   4篇
  1984年   5篇
  1983年   4篇
  1981年   3篇
  1980年   3篇
  1979年   5篇
  1978年   3篇
  1977年   5篇
  1976年   7篇
  1971年   3篇
  1970年   4篇
  1965年   3篇
排序方式: 共有2318条查询结果,搜索用时 0 毫秒
71.
72.
Pedro Gutiérrez Bueno wrote two editions of a chemistry textbook between 1788 and 1802. The paper offers a comparative view of both editions taking into account Gutiérrez Bueno’s biography, his intended audience and the changes related to the so-called chemical revolution. Some conclusions are at odds with common images about scientific revolutions and the role of textbooks in science. The analysis aims to shed some light on the multiple historical forces shaping textbooks and the way in which scientific change is assimilated by their writers. This research was partially supported by the program BHA2002-04611-CO3-02  相似文献   
73.
This study examines the changes in educational inequality at the school‐ and individual‐levels in 1991 and 2001. Comparisons are made between the IEA Reading Literacy Study 1991 and the so called 10‐Year Trend Study in PIRLS 2001. The between‐school differences in reading achievement variance and the size of the relationship between SES and reading achievement at school‐level are the two main focuses. Applying a two‐level structural equation modeling technique, it was found that the between‐school differences in reading achievement were greater in RLS 2001 than in RLS 1991, and the school SES effect has been strengthened over time. These changes indicate that educational inequality in Sweden has increased over time. Some possible explanations to these changes are discussed with reference to school reforms and demographic changes.  相似文献   
74.
First‐generation undergraduate students face challenging cross‐socioeconomic cultural transitions into college life. The authors compared first‐ and non‐first‐generation undergraduate students’ social support, posttraumatic stress, depression symptoms, and life satisfaction. First‐generation participants reported less social support from family and friends, more single‐event traumatic stress, less life satisfaction, and marginally more depression symptomatology than non‐first‐generation participants, but significant generation–gender interactions showed first‐generation women doing worse and first‐generation men doing better than others.  相似文献   
75.
Resumen

Este trabajo examina el proceso de adquisición de la identidad y el rol sexual, así como algunos factores que condicionan esta evolución. Se utiliza el método clínico piagetiano, con la ayuda de imágenes gráficas.

Entre las conclusiones más importantes cabe señalar: 1) La adquisición de la identidad y el rol sexual tiene lugar, en sus aspectos más destacados, entre los dos y tres años de vida, 2) La conservación (autoaplicada) de la identidad no es alcanzada hasta los 5–7 años, aproximadamente, 3) Los roles sexuales reproducen de forma particularmente directa la situación del núcleo familiar.  相似文献   
76.
This research was conducted in Ankara province for the purpose of examining the status of planning in preparation for retirement as an individual and as a family of individuals who show differences in educational level. Individuals who lived in Ankara province, who were 3 years from retirement according to age limit, and who had social security from one of the three official government plans (The Pensions Fund For Civil Servants of The Republic of Turkey, Social Insurance Institution, or Social Security Organization of Artisans, and Craftsmen and other Self-Employed People) were the research population from which 393 individuals were chosen using the Stratified Random Sampling Method. There was a higher percentage of individuals who stated that they had not planned for retirement than those who had. Of the individuals who stated that they had made plans, 80.7% had made those plans about their financial status. Individuals who thought that it was necessary to have an educational program for preparing for retirement also wanted “financial status” topics at the head of the list of topics for such a program.  相似文献   
77.
An experiment designed to train engineering students to two levels of terminal achievement within single institutions is reported. The operative engineers (formerly high level technicians) qualify after three years whilst research and development engineers (fully qualified engineers) take five years. Organisational and curricular problems necessarily created by such integrated schemes are described and discussed. Social attitudes in society in general and in the student body in particular make the task of directing students towards the shorter form of training complex and difficult. From the experience gained so far it can confidently be asserted that the experiments in two-level training have been successful.Note by the Editor: This article is an abbreviated version prepared by the Editor of a 90-page UNESCO (copyright) report with the same title, Document ED. 75/WS/64, dated October 1975. We are grateful to the authors and to UNESCO for permission to print this summary of the report.  相似文献   
78.
The language competence and reading comprehension of 406 7‐year‐old children are examined in the research discussed in this article. The children were tested using comparative tests as part of an international project conducted in 14 countries and sponsored by the IEA and the High Scope Research Foundation in Ypsilanti, USA. The discussion here relates only to a part of this wider research and focuses upon the aims and contents of Polish language teaching in grades I—III of the Polish primary school.  相似文献   
79.
80.
Over the last few years, information and communication technologies have become an essential part of daily life, affecting education, employment, and leisure, among other activities. Nonetheless, many individuals still reap few or no benefits from these technologies, and there are resilient gaps in their use. Within this larger context, the authors examine the Internet digital divide between people with and without disabilities from a multidimensional approach. Rather than analyzing the gap in terms of “haves” and “have-nots,” a range of Internet-related dimensions—affordability, motivation and attitudes, skills, usage, and others—is taken into account.  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