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   195944篇
  免费   2888篇
  国内免费   2501篇
教育   146836篇
科学研究   19601篇
各国文化   349篇
体育   10536篇
综合类   11750篇
文化理论   155篇
信息传播   12106篇
  2024年   28篇
  2023年   390篇
  2022年   1393篇
  2021年   2413篇
  2020年   3060篇
  2019年   2274篇
  2018年   1605篇
  2017年   1591篇
  2016年   2089篇
  2015年   4216篇
  2014年   10840篇
  2013年   11480篇
  2012年   14487篇
  2011年   15730篇
  2010年   11746篇
  2009年   10966篇
  2008年   12649篇
  2007年   16099篇
  2006年   15666篇
  2005年   14112篇
  2004年   12264篇
  2003年   11089篇
  2002年   8930篇
  2001年   7110篇
  2000年   3960篇
  1999年   1586篇
  1998年   740篇
  1997年   616篇
  1996年   550篇
  1995年   298篇
  1994年   296篇
  1993年   213篇
  1992年   164篇
  1991年   109篇
  1990年   80篇
  1989年   50篇
  1988年   30篇
  1987年   9篇
  1986年   6篇
  1985年   63篇
  1984年   55篇
  1983年   37篇
  1982年   48篇
  1981年   39篇
  1980年   11篇
  1979年   22篇
  1978年   38篇
  1977年   41篇
  1976年   34篇
  1957年   10篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
空间解析几何是大学数学类专业的一门重要基础课,也是数学专业学生深入学习几何学专业知识的基础课程。本文通过在课堂中引入雨课堂、数学史和MATLAB,提高了学生的学习效率。  相似文献   
102.
阎连科作为当代著名的现实主义作家,他所关注的焦点一直是家乡河南底层农民的苦难与畸形的生活状态。而在《风雅颂》这本著作中,阎连科一转常态,将自己关注的视角对准了高校的知识分子行列,用批判的视角与反讽的手法对当下知识分子精神迷失的现状进行了呈现与反思,具有一定程度的警醒意义。  相似文献   
103.
自甘风险和过失相抵是体育侵权案件中最常见的抗辩方式。前者将会免除加害人的赔偿责任,而后者只能按比例减少加害人的赔偿责任。虽然法律后果存在巨大差异,但目前对于体育侵权案件适用自甘风险,还是适用过失相抵,没有一个明确的标准,没有建构一套稳定的规则。从美国法的经验来看,通过对自甘风险进行分类来解决自甘风险和过失相抵的竞合问题,并不是一个成功的范例。实际上,自甘风险和过失相抵的主要区别在于受害人能否认知风险的存在。通过运动类型、违规程度、年龄和精神状况、参与的自愿性、专业程度等五个要素的综合考量,法官可以推知当事人的意思,进而从参加体育活动的行为来判断是否构成自甘风险,最终正确适用法律。  相似文献   
104.
《放妻书》是唐代敦煌地区出现的一种特别的离婚协议形式,它所反映的是一种唐代特有的"和离"制度,男女双方以"两愿离"的方式和平离婚。通过对《放妻书》文本的分析,本文阐明了《放妻书》可能的形成条件及其折射的唐代社会风貌。同时,基于对《放妻书》的分析,本文将探讨其与现代离婚声明之间的联系,并进一步提出,无论是《放妻书》还是现代离婚声明,它们都是发布者塑造和维护自身"人设"的媒介工具。  相似文献   
105.
ABSTRACT

Formal education was used by the apartheid government to prepare black South Africans for manual labour, thus there was little curricular focus on the development of higher-order cognitive skills. With the abolition of apartheid in 1994, the education system was re-valued and re-evaluated to provide wider access to quality education; the focus of education policies moved towards the development of self-regulation and higher-order cognitive skills for all learners. There is now a generation of learners who have experienced their schooling in the transformed education system, and it would be useful to understand, from their perspective, what they value in their development of learning within the higher education space. This study answers the question ‘Post-apartheid, what learning methods and resources do first-years perceive to be valuable to their learning when they enter university?’ Participants included 344 students taking a Biology course provided to medical science students at a South African university in 2018. Two questionnaires were administered towards the end of a six-week lecture period, responses were evaluated quantitatively and qualitatively. The first survey, comprised of Likert-style questions, was conducted to determine the students’ views on the mechanisms which they used to support their learning. The second questionnaire comprised open-ended questions and focused on the students’ perception of their learning experience in the course. The findings show that there was a significant (p?<?.001) percentage of first-years who thought that rote-learning would suffice for examination preparation at university, and preferred to engage with their peers and the textbook before they engaged with their lecturers when navigating challenging concepts. Schwartz's model of social values is used to show that more needs to be done for the development of higher-order thinking and self-regulation when students enter university, and to mitigate alienation between students and staff.  相似文献   
106.
Utilizing a 4-year longitudinal dataset (2007−08 to 2010−11) of 212 public secondary schools from two districts in Nepal, I conduct panel regression analyses to determine the association between public school high stakes examination outcomes and measures of private sector competition. I find that there does not seem to be a significant positive or negative association between public school outcomes and the extent of private competition in recent years. However, there is evidence to suggest that the gap between public and private school outcomes is higher in localities with higher private sector growth, providing suggestive evidence of stratification.  相似文献   
107.
This study investigated the effect of including explicit nature of science (NOS) content in read-alouds of elementary science trade books on the teaching and learning of NOS. We focused on three aspects of NOS: the creative, the empirical, and the inferential NOS. The trade books were read aloud by teachers in three hierarchical levels: Level I served as a control and consisted of a trade book that remained unmodified, Level II consisted of a trade book that had been modified to include explicit references to NOS, and Level III consisted of a modified trade book accompanied by educative curriculum materials that were aimed at improving the teachers' views of NOS as well as supporting teaching about NOS. We used the Views of Nature of Science Questionnaire-form CE (VNOS-CE) preintervention and postintervention to determine changes in teachers' views of NOS and interviews preintervention and postintervention to determine changes in students' views. Audio recordings of read-alouds were used to determine changes in teaching practice, including the frequency and the quality (i.e., naïve or informed) of the NOS references in the discussions. Interviews were used to determine teachers' perceptions of the modified trade books and educative curriculum materials. We found that both teachers and students developed more informed views of the targeted NOS aspects after the intervention and that teachers addressed NOS more often, and in a more informed manner, when they had trade books that explicitly supported NOS instruction and educative curriculum materials that supported their learning about NOS. Furthermore, they perceived the intervention materials favorably. Teachers' views and practices were able to change in tandem because of the intervention materials that supported explicit NOS instruction. We highlight the need for more widespread development of similar educative curriculum materials.  相似文献   
108.
The study evaluated the relationship among teaching, leadership, teacher certification, student and teacher number related factors, and index of economic, social and cultural status (ESCS), and science literacy from an international comparative perspective. 2015 dataset of the Programme for International Student Assessment for Turkey, Singapore, the United States, Korea, Italy, and Brazil was used. Two-level hierarchical linear models were established for analysis. Results revealed that school ESCS was the best predictor of science literacy across six countries and additionally teacher-related factors came to the forefront of science literacy performance. The study underlined policymakers should focus primarily on policies that increase equity in education. Furthermore, the effectiveness of investments made in factors related to leadership, teacher certification, the number of students and teachers, which contribute very little to science literacy performance, need to be more questioned. Inferences about the findings were discussed in detail, and recommendations for further research were made.  相似文献   
109.
以海阳大秧歌中的民俗武术活动“斗秧歌”仪式为个案,运用田野调查等方法,从民俗学视角对“斗秧歌”的过程及民俗语境进行分析。认为:海阳大秧歌吸收了军事武术中的兵法谋略与民间武术技术动作,族群生存斗争与比武较技是“斗秧歌”吸收武术元素的重要动因,其逻辑形式表现为礼法约束下由“文斗”到“武斗”的递进,“文斗”体现兵法谋略智慧,武术是“武斗”的主要支撑力量。“斗秧歌”受到礼法约束,以强化乡间社会秩序的稳定,反映了中国传统社会治理中的礼法并施思想。剖析其民俗语境发现,“斗秧歌”是族群生存抗争的仪式手段、护卫生存环境的民间演习、展示个人魅力的艺术舞台,也是地域武术传播的民俗载体。武术与“斗秧歌”之间的融合互动关系,显示武术与民俗活动深厚的历史渊源及武术具有的多元价值属性。  相似文献   
110.
This study contributes to current self-efficacy research in two ways. First, it responds to the need for more context- and competency-specific self-efficacy research by expanding the research field to the context of role-play simulations and focusing on the outcome of self-efficacy in negotiating. Second, aiming to investigate sources of self-efficacy and their interplay, the study addresses the need for more in-depth qualitative research by conducting a single holistic case study with a longitudinal design. Moreover, the study focuses on outcomes of an increase or decrease in self-efficacy over time. Data were collected during a four-day European Union simulation. Three data sources – diaries, interviews, and semi-structured observations and field notes – contributed to data convergence, ensuring that more than a single source of evidence supported findings. Four students were selected using maximum variation sampling. The final sample of 27 meaningful events – about the development of self-efficacy in negotiating – were selected by within-case sampling based on a set of inclusion criteria. Data were analyzed by means of content analysis. Three groups of sources of self-efficacy could be defined: personal sources, social sources, and contextual sources, which encompassed and enriched the four previously hypothesized sources of self-efficacy. With regard to the interplay of sources, five main pathways could be defined. Personal sources were present in all pathways. The contribution of social sources to an increase in self-efficacy was more obvious than its role in a decrease in self-efficacy. The contribution of the contextual source to the development of self-efficacy in negotiating was generally less prominent.  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