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   4946篇
  免费   70篇
  国内免费   20篇
教育   3338篇
科学研究   634篇
各国文化   29篇
体育   379篇
综合类   6篇
文化理论   33篇
信息传播   617篇
  2022年   37篇
  2021年   45篇
  2020年   85篇
  2019年   120篇
  2018年   154篇
  2017年   192篇
  2016年   154篇
  2015年   116篇
  2014年   157篇
  2013年   780篇
  2012年   131篇
  2011年   136篇
  2010年   121篇
  2009年   102篇
  2008年   113篇
  2007年   134篇
  2006年   103篇
  2005年   72篇
  2004年   86篇
  2003年   79篇
  2002年   62篇
  2001年   104篇
  2000年   130篇
  1999年   89篇
  1998年   72篇
  1997年   63篇
  1996年   62篇
  1995年   42篇
  1994年   45篇
  1993年   33篇
  1992年   75篇
  1991年   68篇
  1990年   60篇
  1989年   62篇
  1988年   74篇
  1987年   58篇
  1986年   78篇
  1985年   70篇
  1984年   55篇
  1983年   69篇
  1982年   53篇
  1981年   40篇
  1980年   29篇
  1979年   52篇
  1978年   49篇
  1977年   37篇
  1976年   41篇
  1975年   31篇
  1974年   33篇
  1973年   33篇
排序方式: 共有5036条查询结果,搜索用时 15 毫秒
51.
Abstract

In 1988 the Open University is implementing a major new policy on the use of computers in its courses; students taking certain courses will be obliged to have access to a microcomputer. This new policy has many far‐reaching consequences, not least for students who are disabled. In the past most computing in Open University courses has been done by students using terminals in local study centres, linked to the University's mainframe computers. Also, a number of students who are disabled have used computers in their studies, principally for word‐processing written work. By interviewing disabled students who have taken such courses, and surveying other disabled students, it has been possible to anticipate to some extent the likely impact of the home‐computing (HC) policy. Results suggest that for many disabled‐ students the HC policy represents an improvement in their opportunities; now they will be able to study courses involving computers entirely at home. However, a number of problems have also been identified. Hopefully, as many of these have been recognised at an early stage, it will be possible to address them before they affect students directly.  相似文献   
52.
Abstract

Within education, some teachers’ interpretation of professionalism emphasizes conformity to the perceived norms of collective associations. Unprofessional behaviour, often equated with ‘unethical’ behaviour, is seen by many to be that which threatens solidarity and loyalty to colleagues. Informal norms typified by casual collegial relations as well as more formal attachments to organized unions or teachers’ federations exert a significant influence on individuals’ behaviour within the group. Professional ethics, in this sense, become concerned primarily with how one relates to colleagues rather than how one fulfils moral responsibilities to students. Qualitative findings from interviews with elementary and secondary school teachers suggest that, as a result of an ethic of collegial loyalty, some teachers experience personal moral and ethical dilemmas that they find difficult to resolve. Some respondents acknowledged that this can enable serious situations to be ignored or ‘covered up’. This paper examines some of the tensions and dilemmas experienced by teachers and raises questions about the ethical adequacy of defining professionalism in terms of inter‐colleague behaviour.  相似文献   
53.
Video analysis, using the program Tracker (Open Source Physics), in the educational process introduces a new creative method of teaching physics and makes natural sciences more interesting for students. This way of exploring the laws of nature can amaze students because this illustrative and interactive educational software inspires them to think creatively, improves their performance and helps them in studying physics. This paper deals with increasing the key competencies in engineering by analysing real-life situation videos – physical problems – by means of video analysis and the modelling tools using the program Tracker and simulations of physical phenomena from The Physics Education Technology (PhET?) Project (VAS method of problem tasks). The statistical testing using the t-test confirmed the significance of the differences in the knowledge of the experimental and control groups, which were the result of interactive method application.  相似文献   
54.
55.
For individuals with strong work identities, the decision to retire can be particularly challenging. For academic physicians, retirement is an important personal decision that also has far-reaching implications for the healthcare system. This is because academic physicians are responsible for producing the research from which key medical decisions are made, for training future healthcare providers, and for providing specialized care for patients. For this study, we conducted focus groups with academic physicians from a large research university in Canada and then performed inductive thematic analyses to examine perceptions and concerns about later life career transitions. This study highlights tensions between professional experiences for the next generation of physicians and individual struggles with personal identity. Findings suggest improvements to institutional programs that support flexible, agentive, and respectful retirement transitions will not only be beneficial but necessary as medical and university systems continue to grapple with issues of balanced recruitment and succession.  相似文献   
56.
Instructor-learner interactions are viewed from the perspective of dynamically self-organizing, coordinated systems. Mothers were asked to instruct their preterm and full-term 24-month-old children to sort blocks according to size and color (a challenging task for children of this age). Dyads were observed for their ability to find a mutual and stable instructional relationship. Dyads in which the child was later identified as having attention-deficit/hyperactivity disorder (ADHD) were marked by significantly less stable organization, less mutuality, and greater perturbations in the system. Mothers of children later found to have ADHD tended to apply stronger constraints than those whose children grew up to have no identified school problems. Implications are drawn for optimal instruction of children who are at risk for central nervous system disorders.  相似文献   
57.
Comprehension tests often compare accuracy on inferential versus literal questions and find inferential harder than literal, and poor comprehenders performing worse than controls. Difficulties in integration are assumed to be the reason. This research explores another reason—differences in memory for the passage information underlying the questions. Thirty-nine poor comprehenders and 39 controls were given multiple-paragraph passages, which they retold before answering questions. Retellings permitted assessing question accuracy as a function of memory for the text underlying each question. Inferential accuracy was poorer than literal, and the expected group effect was obtained. However, when text memory was perfect, group differences disappeared, indicating that poor comprehenders can generate inferences as well as controls, if they have the relevant information in memory. These findings show that text memory is crucial in distinguishing poor comprehension.  相似文献   
58.
Generational and life course theory lenses were placed upon one finding of a large-scale qualitative interview-based study focused on if and how community college faculty members construct work–life balance. Twenty-eight interviews with faculty members at a midwestern community college were conducted. Differences regarding to work-life balance approaches between Baby Boomer (n = 15) and Generation X (n = 13) faculty and as mediated by position within the life course are elucidated. We termed this finding tides of life, which is comprised of three subfindings: roles, tenure, and gender performance. Practical implications of this finding are put forward. Better understanding of the nuanced ways in which community college faculty construct work–life balance can inform policy decisions that impact faculty work. Moreover, better understanding of faculty life in a general sense is critical as community college leaders craft policies and refine practices related to faculty employment contracts, work environments, support mechanisms, professional development, and mentoring.  相似文献   
59.
The types of difficulties associated with career attitudes were studied using Super’s model of career maturity (1990) in a group of 620 Portuguese students from grades 9 and 12. A cluster analysis identified four styles with different patterns of association between time perspective, attributional beliefs, self-esteem and career attitudes. The adaptive style showed more committed career attitudes, and the other three styles—superficial, insecure and pessimistic—showed lower levels of career maturity. Implications for career counselling are further discussed.  相似文献   
60.
Motor performance is an important health resource. Review articles revealed a decline of motor performance of approximately 10?% between 1975 and 2006. In the past most of the data available for such comparisons came from ad hoc studies with non-standardized methods. Within the framework of the ”Motorik-Modul“ (MoMo) study as part of the German Health Interview and Examination Survey for Children and Adolescents (KiGGS), it is possible for the first time to directly compare two cohorts in the ages of 4–17 years in a nationally representative database for Germany. The aim of this article is to report changes in motor performance of children and adolescents in the time period 2003–2006 (cohort baseline n = 4528) compared to 2009–2012 (cohort wave 1, n = 2820). Overall, it is clearly shown that the motor performance of children and adolescents in Germany did not decrease within the observational period of 6 years. The comparison of mean values of the baseline cohort compared to those of wave 1 showed that 28 out of 52 mean values of the two cohorts with a high probability did not differ based on 95?% confidence intervals (CI). In 24 out of the 52 mean values positive changes could be noted based on the individual 95?% CI values. There were more positive changes in primary school aged children than in other age groups. Within these positive changes, most effect sizes were small to medium. The results indicate that recent activities aiming at elevating motor performance levels may have started to make an impact and should be expanded, also in secondary schools. The comparative cohort study presented in this article is currently being checked by the ongoing MoMo wave 2 survey of 2014–2017.  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