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   2501篇
  免费   15篇
教育   2017篇
科学研究   51篇
各国文化   44篇
体育   110篇
综合类   1篇
文化理论   8篇
信息传播   285篇
  2024年   11篇
  2023年   12篇
  2022年   15篇
  2021年   27篇
  2020年   36篇
  2019年   74篇
  2018年   93篇
  2017年   103篇
  2016年   93篇
  2015年   60篇
  2014年   90篇
  2013年   615篇
  2012年   59篇
  2011年   57篇
  2010年   63篇
  2009年   65篇
  2008年   65篇
  2007年   66篇
  2006年   51篇
  2005年   54篇
  2004年   58篇
  2003年   46篇
  2002年   40篇
  2001年   45篇
  2000年   40篇
  1999年   32篇
  1998年   24篇
  1997年   47篇
  1996年   24篇
  1995年   33篇
  1994年   28篇
  1993年   31篇
  1992年   18篇
  1991年   24篇
  1990年   28篇
  1989年   23篇
  1988年   16篇
  1987年   14篇
  1986年   24篇
  1985年   19篇
  1984年   32篇
  1983年   13篇
  1982年   16篇
  1981年   15篇
  1980年   16篇
  1979年   15篇
  1977年   11篇
  1976年   12篇
  1975年   10篇
  1974年   15篇
排序方式: 共有2516条查询结果,搜索用时 0 毫秒
151.
Conference day     
Early Childhood Education Journal - My first graders arrive with their parents for conference time. Conferencing involves a three-way triad—student, parent, teacher. The lines of...  相似文献   
152.
Researchers in the area of educational effectiveness should attempt to develop a new theoretical framework. A critical analysis of the current models of educational effectiveness research is provided and reveals that a dynamic model of effectiveness must: (a) be multilevel in nature, (b) be based on the assumption that the relation of some effectiveness factors with achievement may be curvilinear, (c) illustrate the dimensions upon which the measurement of each effectiveness factor should be based, and (d) define relations among the effectiveness factors. In principle, each factor that refers to the classroom, school, and system, can be measured by taking into account five dimensions: frequency, focus, stage, quality, and differentiation. Examples of measuring effectiveness factors operating at different levels using these 5 dimensions are given. More attention in describing in detail factors associated with teacher behaviour in the classroom is given, since this is seen as the starting point for the development and the testing of the dynamic model. Finally, suggestions for the next steps in the development of other parts of the model are provided.  相似文献   
153.
This study assessed muscular torque and rate of torque development following concentric (CON) or eccentric (ECC) isokinetic training. Thirty-eight women were randomly assigned to either CON or ECC training groups. Training consisted of knee extension and flexion of the nondominant leg three times per week for 20 weeks (SD = 1). Eccentric training increased ECC knee extension and flexion peak torque more than CON training. The ECC group improved acceleration time and time to peak torque with ECC movements versus the CON group. Slow-velocity ECC isokinetic training yielded greater ECC and similar CON torque development gains versus CON training over the course of 20 weeks in young women.  相似文献   
154.
155.
The purpose of this study was to examine the relationship between dynamic hip rotational range of motion and upper extremity kinematics during baseball pitching. Thirty-one youth baseball pitchers (10.87 ± 0.92 years; 150.03 ± 5.48 cm; 44.83 ± 8.04 kg) participated. A strong correlation was found between stance hip rotation and scapular upward rotation at maximum shoulder external rotation (r = 0.531, = 0.002) and at ball release (r = 0.536, = 0.002). No statistically significant correlations were found between dynamic hip rotational range of motion and passive hip range of motion. Hip range of motion deficits can constrain pelvis rotation and limit energy generation in the lower extremities. Shoulder pathomechanics can then develop as greater responsibility is placed on the shoulder to generate the energy lost from the proximal segments, increasing risk of upper extremity injury. Additionally, it appears that passive seated measurements of hip range of motion may not accurately reflect the dynamic range of motion of the hips through the progression of the pitch cycle.  相似文献   
156.
This paper reports on a 16-week sport education (SE) unit with just over 70 year 5 students (M age = 10.04 years) in one United Kingdom school during the spring and summer terms and discusses students' SE experiences. Student interviews were conducted throughout the season and a questionnaire on different motivation aspects was administered prior to and before completing the SE season. We report and examine the data in relation to hypothesized influences on fun and enjoyment, including being part of a team, autonomy, and improving game play. The principal reasons SE may be more enjoyable than previous physical education lessons include the greater opportunities for autonomy, affiliation, and competition, plus perceived learning.  相似文献   
157.
The aim of this study was to assess the effect of to isometic contraction durations during propiceptive neuromuscular facilitation stretching on gains inflexion at the hip. Forty-three women (M age = 20.0 years, SD = 1.3) were assigned to one of three groups: 5-s isometric contraction (5-IC), 10-IC, and control. Flexibility was assessed at baseline and Weeks 3 and 6. Analysis of covariance, controlling for pretest differences, showed a significant interaction, F(2, 33) = 44.1, p < .001. Flexibility was significant lower in the control group relative to the 5-IC and 10-IC groups and in the 5-IC group relative to the 10-IC group at 3 and 6 weeks (3 weeks = 101.2 +/- 1.4 degrees, 114.3 +/- 1.5 degrees, 120.5 +/- 1.3 degrees; 6 weeks = 103.0 +/- 1.4 degrees, 126.1 +/- 1.6 degrees, 133.3 +/- 1.4 degrees for control, 5-IC and 10-IC groups, respectively). A longer contraction time led to greater increases in flexibility.  相似文献   
158.
    
One fact often overlooked in discussing the retention issue is that not everyone who fails to return to school is a dropout. Some persons return after an absence of a semester or more; they can be called stopouts. Some intended to take only a few classes and stop attending when they accomplish their educational goals; they can be called optouts. The only persons who should be labeled dropouts are those who failed to accomplish their educational goal and have no definite plans to accomplish it later.

During the 1990‐91 school year, Del Mar College (DMC) and the Texas A&M Adult and Extension Education program developed and executed a plan to identify, count, and interview nonreturnees at DMC. The purposes of the study were toprovide DMC with baseline data on its nonreturnees and to test the feasibility of gathering interview information by telephone.

Stopouts far outnumbered dropouts and optouts among respondents, with 303 of 399 nonreturnees identifying themselves as such.

In this article, we define relevant terms, outline the data‐gathering process and describe the findings of the present study, and present recommendations regarding data gathering and the focus of retention efforts.  相似文献   
159.
160.
The science achievement of 226 5th graders from districts that have a kit-based inquiry science curriculum supported by intensive professional development (PD) is compared with data from a group of 173 5th graders from other districts that use nonkit science materials and do not have systematic science PD for teachers. Within the kit-based project, the sample of project teachers is stratified to select teachers with a high number of science PD hours versus those with few hours. While there were no significant differences in the mean total scores for kit-based students with low PD versus high PD teachers, the kit-based classrooms scored significantly higher than students in nonkit classrooms on both the pretest and posttest, though there were significantly more minutes of science instruction in the nonkit classrooms. Finally, nonkit teachers taught more units of shorter length and reported lower levels of preparedness to use reform pedagogical approaches.  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