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   5119篇
  免费   124篇
  国内免费   58篇
教育   3173篇
科学研究   528篇
各国文化   12篇
体育   859篇
综合类   473篇
信息传播   256篇
  2023年   8篇
  2022年   27篇
  2021年   116篇
  2020年   133篇
  2019年   87篇
  2018年   41篇
  2017年   58篇
  2016年   83篇
  2015年   158篇
  2014年   410篇
  2013年   399篇
  2012年   483篇
  2011年   539篇
  2010年   419篇
  2009年   343篇
  2008年   349篇
  2007年   374篇
  2006年   305篇
  2005年   265篇
  2004年   199篇
  2003年   152篇
  2002年   107篇
  2001年   102篇
  2000年   72篇
  1999年   27篇
  1998年   16篇
  1997年   7篇
  1996年   8篇
  1995年   4篇
  1994年   2篇
  1993年   3篇
  1992年   1篇
  1990年   2篇
  1989年   1篇
  1984年   1篇
排序方式: 共有5301条查询结果,搜索用时 78 毫秒
1.
2.
2022年冬奥会已进入北京时间。黑龙江省各高校应在习主席新时代中国特色社会主义思想引领下,深入贯彻党的教育方针,将立德树人根本任务深切落到实处,积极响应"带动3亿人参与冰雪运动"的伟大号召,加速发展高校冰雪运动。本文采用文献资料、逻辑分析、归纳等研究方法,对北京冬奥会背景下黑龙江省高校冰雪运动发展的现状及存在问题进行分析,并探寻一条符合新时代发展需要的黑龙江省高校冰雪运动发展路径,旨在全面振兴黑龙江省高校冰雪运动,为2022年北京冬奥会保驾护航。  相似文献   
3.
Relying on data from a nationally representative sample of youth involved in the child welfare system (CWS) in 1999–2000 (the National Survey of Child and Adolescent Well-Being, Cohort 1) and 2008–2009 (Cohort 2), this study implemented a diverse set of disparity indicators to estimate area-socioeconomic disparities in mental health (MH) services use and changes in area-socioeconomic disparities between the two cohorts. Our study found that there are area-socioeconomic disparities in MH service use, indicating that the rates of MH service use among youth referred to the CWS differ by area-socioeconomic positions defined by county-level poverty rates. We also found that area-socioeconomic disparities increased over time. However, the magnitude of the increase varied widely across disparity measures, suggesting that there are different conclusions about the trend and magnitude of area-socioeconomic disparities, depending upon which disparity measures are implemented. A greater understanding of the methodological differences among disparity measures is warranted, which will in turn impact how interventions are designed to reduce socioeconomic disparities among children in the CWS.  相似文献   
4.
Child maltreatment is a risk factor for detrimental effects on mental health that may extend to adulthood. This study aimed to examine the association between exposure to childhood maltreatment, socio-demographic factors, and students’ mental health status and self-esteem. A cross-sectional study enrolled a representative sample of 1270 students from Kuwait University. An anonymous self-administered questionnaire included students’ socio-demographic characteristics, history of exposure to childhood physical and/or emotional maltreatment, DASS-21 to assess mental health status, and Rosenberg self-esteem scale was used. Chi-square test and binary logistic regression models were applied. The study found that among participants, 49.6%(95% CI: 64.8%–52.4%), 63.0%(95% CI: 60.3%–65.7%), and 43.8%(95% CI: 41.1%–46.6%) reported having depression, anxiety, and stress respectively. Moreover, 22.5%(95% CI: 20.1%–24.8%) and 18.6%(95% CI:16.5%–20.9%) reported childhood physical and emotional maltreatment, respectively; while 12.7% reported both. Multivariate analysis revealed that experiencing childhood physical and emotional maltreatment were independent contributors to reporting depression and anxiety; while exposure to only emotional maltreatment contributed to reporting stress. Gender, GPA, childhood enrollment in private/public schools, number of close friends, were other contributors to mental health problems. Participants’ median score of self-esteem was 17/30, and only childhood emotional maltreatment was a significant predictor to low self-esteem after adjustment for other confounders. Mental health problems, and experiencing childhood physical and emotional maltreatment were prevalent relatively high among university students. Childhood corporal and emotional maltreatment were independent predictors to adolescents and young adults’ mental health problems. Experiencing childhood emotional maltreatment predicted low self-esteem. Further research to assess culture factors associated with childhood maltreatment is recommended.  相似文献   
5.
BackgroundHealth-related fitness knowledge (HRFK) has been an essential concept for many health and physical education programs. There has been limited understanding and longitudinal investigation on HRFK growth. This longitudinal study examined HRFK growth and its individual- and school-level correlates in middle school years under 1 curriculum condition: Five for Life.MethodsParticipants were 12,044 students from 47 middle schools. Data were collected at both individual/participant and school/institution levels. Individual-level variables included gender, grade, and HRFK test scores. School-level variables included percentage of students receiving free and reduced meals (FARM), student-to-faculty ratio for physical education, and school academic performance (SAP). We used hierarchical linear modeling to examine HRFK 3-year growth in relation to individual- and school-level correlates.ResultsThe average HRFK score at 6th grade for females was 42.81% ± 1.32%. The predicted HRFK growth was 17.06% ± 1.02% per year, holding other factors constant. A 1-standard deviation increase in FARM correlated with a 14.68%-point decrease in predicted test score (p = 0.02). A 1-standard deviation increase in SAP was associated with an 11.90%-point increase in HRFK score. Males had a significantly lower growth rate than females during the middle school years (0.78%/year, p = 0.02).ConclusionThe result showed that both individual- and school-level variables such as gender, FARM, and SAP influenced HRFK growth. Educators should heed gender differences in growth curves and recognize the correlates of school-level variables.  相似文献   
6.
通过文献资料法、问卷调查法、数理统计法、访谈法等研究方法,对福建省4所高职医学院校的排球课程的现状进行调查分析。研究表明:福建省高职医学院校的排球课程要进一步完善课程设置,加强医体融合的建设,教师要优化教学方法和手段,提高排球课程的吸引力。同时,各高职医学院校应正确认识排球课程改革和发展的影响因素,进一步提升排球课程在人才培养和专业建设中的作用。  相似文献   
7.
为定量解释精英运动员重大比赛期间竞技状态显性和隐性影响因素间相互关系,运用文献资料、层次分析、模糊评价、数理统计等研究方法,基于国家队、省市运动队295名网球教练员、运动员调研数据,提出精英网球运动员重大比赛期间竞技状态影响因素假设命题,再引入SEM概念模型,对假设命题进行验证。结果表明:(1)竞技状态SEM概念模型中,体能训练整合度、技能训练整合度、心智训练整合度、适应度与保障度可作为隐性自变量,且均对竞技状态因变量有正向影响作用,H1、H2、H3、H4假设命题得到验证;(2)经SEM检验,依影响因素权重,精英网球运动员赛间竞技状态调控依次表现为技能训练整合度、心智训练整合度、体能训练整合度、适应度与保障度;(3)精英网球运动员的参赛表现,虽主要取决于竞技训练因子,但对于适应度与保障度中自然环境、社会环境和规程规则等非训练因子,同样不容忽视。  相似文献   
8.
[目的/意义]人类社会在从信息社会向后信息时代过渡的进程中,正在经历从"信息"向"智能"的跨越。在大数据环境和人工智能技术发展的双重因素作用下,知识融合作为知识化和智能化过程中的关键环节,为完善知识服务、智慧服务、催生高级智能形态提供了重要的理论和技术支撑。开展基于全学科视角的知识融合调研,扩展知识融合研究视域,为全面阐释知识融合研究现状,构建统一的知识融合理论研究框架提供借鉴。[方法/过程]本文采用定量与定性结合的文献分析方法,分析不同学科视角下知识融合研究现状,归纳知识融合在不同学科中的主要研究内容和关注的问题、知识融合涉及到的因素、知识融合的应用场景等。[结果/结论]知识融合研究属于多交叉学科领域,概念边界模糊,研究领域分散,目前尚未形成统一的研究框架。本文通过文献调研,在充分总结既往知识融合研究成果的基础上,划分知识融合的研究取向,为知识融合研究提出合理建议。  相似文献   
9.
在素质教育稳步推进和新教改不断深化的背景下,高校体育教学改革主动进行了各种尝试,但在教法改革方面依然不足,就目前高校人才培养成效看仍存在各种局限。因此,当前我国高校体育教育应注重教学方法的改革和探索,提升人才培养成效。笔者在进行长期的教学探索与反思基础上,创新性地提出了动态教学成效监测机制,并致力于动态教学成效监测指标建设,目的在于真正落实高校体育教学的宗旨和人才培养指标,实现学生体育素养、体质全面提升与体育文化素养并举的教学目的。  相似文献   
10.
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   
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