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   10870篇
  免费   110篇
  国内免费   5篇
教育   7579篇
科学研究   1305篇
各国文化   137篇
体育   656篇
综合类   4篇
文化理论   94篇
信息传播   1210篇
  2021年   83篇
  2020年   108篇
  2019年   179篇
  2018年   255篇
  2017年   224篇
  2016年   230篇
  2015年   141篇
  2014年   179篇
  2013年   2250篇
  2012年   183篇
  2011年   193篇
  2010年   166篇
  2009年   173篇
  2008年   189篇
  2007年   154篇
  2006年   176篇
  2005年   141篇
  2004年   165篇
  2003年   129篇
  2002年   135篇
  2001年   165篇
  2000年   175篇
  1999年   145篇
  1998年   116篇
  1997年   113篇
  1996年   127篇
  1995年   113篇
  1994年   108篇
  1993年   137篇
  1992年   164篇
  1991年   162篇
  1990年   154篇
  1989年   137篇
  1988年   134篇
  1987年   151篇
  1986年   139篇
  1985年   160篇
  1984年   129篇
  1983年   133篇
  1982年   155篇
  1981年   107篇
  1980年   124篇
  1979年   145篇
  1978年   118篇
  1977年   110篇
  1976年   109篇
  1975年   92篇
  1974年   92篇
  1973年   88篇
  1971年   77篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Dissemination and sustainability of evidence-based physical education programs (PE) has been studied rarely. The sustainability of a health-related PE program (SPARK) was independently evaluated in 111 elementary schools in 7 states. Surveys were mailed to schools that had received SPARK curriculum books, training and follow-up (response rate = 47%). Up to 80% of schools that adopted SPARK PE reported sustained use up to 4 years later. Schools using SPARK had more frequent PE classes. Sustained use was related to support from the principal, not previously having a standard PE program, having adequate equipment, and teachers being physically active. Program sustainability was similar in advantaged and disadvantaged schools. Evidence-based PE programs can be sustained up to 4 years.  相似文献   
102.
This study investigated the effect of a single session of resistance exercise on postprandial lipaemia. Eleven healthy normolipidaemic men with a mean age of 23 (standard error = 1.4) years performed two trials at least 1 week apart in a counterbalanced randomized design. In each trial, participants consumed a test meal (1.2 g fat, 1.1 g carbohydrate, 0.2 g protein and 68 kJ x kg(-1) body mass) between 08.00 and 09.00 h following a 12 h fast. The afternoon before one trial, the participants performed an 88 min bout of resistance exercise. Before the other trial, the participants were inactive (control trial). Resistance exercise was performed using free weights and included four sets of 10 repetitions of each of 11 exercises. Sets were performed at 80% of 10-repetition maximum with a 2 min work and rest interval. Venous blood samples were obtained in the fasted state and at intervals for 6 h postprandially. Fasting plasma triacylglycerol (TAG) concentration did not differ significantly between control (1.03 +/- 0.13 mmol x l(-1)) and exercise (0.94 +/- 0.09 mmol x l(-1)) trials (mean +/- standard error). Similarly, the 6 h total area under the plasma TAG concentration versus time curve did not differ significantly between the control (9.84 +/- 1.40 mmol l(-1) x 6 h(-1)) and exercise (9.38 +/- 1.12 mmol x l(-1) x 6 h(-1)) trials. These findings suggest that a single session of resistance exercise does not reduce postprandial lipaemia.  相似文献   
103.
104.
This article presents and discusses the findings of a research project, the main objective of which is to identify curriculum components that promote personal development as a nuclear part of teacher professional identity formation through pre-service teacher education. Curriculum is viewed as an ecological scenario with different subsystems and both as formal and informal. Identity formation is conceived as an ever-provisional result of a double transaction: the biographical one and the relational one. The curricula of four different historical periods of pre-service teacher education in Portugal and the professional identity of teachers trained within them were characterised through collection and analysis of documents and biographical narratives. Crossing results from the four periods, the quality of school climate emerges as an important variable to the quality of the teachers’ identity. The lifelong learning ethos seems to emerge when the training curriculum connects everyday learning with everyday life, namely by urging the students’ involvement in school life, peer learning activities and peer and teacher educators’ informal learning activities.  相似文献   
105.
The purpose of this study was to investigate the intra-rater and inter-rater reliability of the Critical Thinking Analytic Rubric (CTAR). The CTAR is composed of 6 rubric categories: interpretation, analysis, evaluation, inference, explanation, and disposition. To investigate inter-rater reliability, two trained raters scored four sets of performance-based student work samples derived from a pilot study and subsequent larger study. The two raters also blindly scored a subset of student work samples a second time to investigate intra-rater reliability. Participants in this study were high school seniors enrolled in a college preparation course. Both raters showed acceptable levels of intra-rater reliability (α  0.70) in five of the six rubric categories. One rater showed poor consistency (α = 0.56) for the analysis category of the rubric, while the other rater showed excellent consistency (α = 0.91) for the same category suggesting the need for further training of the former rater. The results of the inter-rater reliability investigation demonstrate acceptable levels of consistency (α  0.70) in all rubric categories. This investigation demonstrated that the CTAR can be used by raters to score student work samples in a consistent manner.  相似文献   
106.
107.
Mainstreaming the exceptional child necessitates that regular and special teachers work much more closely today than in the past. The most important element for successful mainstreaming is effective communication (Schubert & Glick, 1981). This article describes the collaborative consultation model as one approach to attaining good, effective communication.  相似文献   
108.
109.

This paper reports on experience with project courses, especially those concerning the design and construction of an autonomous aerial robot.

Dealing with this complex application task in small teams, advanced students are coached by teaching assistants in state‐of‐the‐art work in special fields of computer science.

The task includes a high potential for motivation and is sufficiently complex for a large range of techniques required. Team‐orientation is an important aspect; the students have to establish and coordinate various individual tasks.  相似文献   
110.
The purpose of this study was to analyse associations between lean soft tissue (LST), a surrogate of skeletal muscle mass and key fracture-related geometric characteristics of the proximal femur. Moreover, we examined the role that muscle played on the proximal femur geometry in response to physical activity (PA). Participants were 83 young adults. Leg LST (exposure) was assessed by dual energy X-ray absorptiometry (DXA). Proximal femur geometry was derived from a left hip DXA scan. Geometric variables (outcomes) included the femoral neck axis length (FNAL), the femoral neck width (FNW), the neck–shaft angle and FNW|FNAL (an index of robustness). PA was evaluated by accelerometry. Linear regression was used to analyse relationships. Additional exposure variables included body height and mass. In males, leg LST explained 17.4% of variation in FNAL (P < 0.001) and 15% in FNW (P = 0.015). In females, it explained 8.8% of the variance in FNAL (P = 0.020). Associations remained significant in males, but not in females, when vigorous PA was added to the models. These results suggest that public health approaches to promote PA may be particularly important in females since vigorous PA seems to convey advantages in femur geometry and consequently in bone strength.  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