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   628篇
  免费   2篇
  国内免费   1篇
教育   489篇
科学研究   9篇
各国文化   17篇
体育   48篇
文化理论   5篇
信息传播   63篇
  2021年   5篇
  2020年   6篇
  2019年   8篇
  2018年   16篇
  2017年   7篇
  2016年   9篇
  2014年   12篇
  2013年   190篇
  2012年   12篇
  2011年   12篇
  2010年   12篇
  2009年   11篇
  2008年   16篇
  2007年   11篇
  2006年   9篇
  2005年   11篇
  2004年   17篇
  2003年   21篇
  2002年   5篇
  2001年   16篇
  2000年   4篇
  1998年   3篇
  1997年   3篇
  1996年   4篇
  1994年   8篇
  1993年   6篇
  1992年   5篇
  1991年   4篇
  1990年   6篇
  1989年   11篇
  1988年   10篇
  1987年   5篇
  1986年   4篇
  1985年   9篇
  1984年   12篇
  1983年   6篇
  1982年   19篇
  1981年   11篇
  1980年   9篇
  1979年   6篇
  1978年   12篇
  1977年   7篇
  1976年   4篇
  1975年   3篇
  1974年   6篇
  1973年   6篇
  1971年   5篇
  1969年   7篇
  1968年   4篇
  1966年   3篇
排序方式: 共有631条查询结果,搜索用时 0 毫秒
151.
This experimental study reports findings on the effects from a year-long reading intervention providing daily, 50-minute sessions to middle-school students with identified learning disabilities (n = 65) compared with similar students who did not receive the reading intervention (n = 55). All students continued to receive their special education services as provided by the school. Results indicated statistically significant findings favoring the treatment group for sight word reading fluency following intervention. Small effects were found for phonemic decoding fluency and passage comprehension. No other statistically significant differences were noted between groups. The findings suggest that while gains on word reading fluency resulted from the additional reading treatment, accelerating the reading performance of students identified with learning disabilities may be unlikely to result from a one-year, daily intervention provided to students in groups of 10-15.  相似文献   
152.
The rain     
I used to be a boy deeply loving the rain.Running in the rain without my beautiful umbrella was once one of my favorite things.However,as time went by,I was not even the half the one I had been.The rain would bring me some convenience,like no P.E.class that day.In another way,it made me depressed.Loneliness came to bother me all day.Facing the crowded bus,I felt somewhat complicated.Though it took me more time and strength,I still enjoyed walking home.At least I didn't have to stay out of breath on the hot wet bus...  相似文献   
153.
The aim of this study was to quantify joint compression and shear forces at L4/L5 during exercises used to overload the hips. Nine men performed 36 "walking" trials using two modalities: (1) sled towing and (2) exercise bands placed around the ankles. Participants completed forward, backward, and lateral trials with bent and straight legs at three separate loads. Surface electromyography (EMG) was recorded bilaterally from eight torso and thigh sites, upper body and lumbar spine motion were quantified, and hand forces were measured. An EMG-driven musculoskeletal model was used to estimate the muscular contribution to joint compression and shear. Peak reaction, muscle and joint compression and shear forces, and peak gluteus medius and maximus activity were calculated. Significant differences were noted in each dependent measure; however, they were dependent on direction of travel, leg position, and load. The highest joint compression and shear forces for the sled and band conditions were 4378 N and 626 N, and 3306 N and 713 N, respectively. In general, increasing the band tension had little effect on all dependent measures, although a load-response was found during the sled conditions. Before using any exercise to improve hip function, the potential benefits should be weighed against "costs" to neighbouring joints.  相似文献   
154.
This study reports findings on the relative effects from a yearlong secondary intervention contrasting large-group, small-group, and school-provided interventions emphasizing word study, vocabulary development, fluency, and comprehension with seventh- and eighth-graders with reading difficulties. Findings indicate that few statistically significant results or clinically significant gains were associated with group size or intervention. Findings also indicate that a significant acceleration of reading outcomes for seventh- and eighth-graders from high-poverty schools is unlikely to result from a 50 min daily class. Instead, the findings indicate, achieving this outcome will require more comprehensive models including more extensive intervention (e.g., more time, even smaller groups), interventions that are longer in duration (multiple years), and interventions that vary in emphasis based on specific students’ needs (e.g., increased focus on comprehension or word study).  相似文献   
155.
156.
157.
158.
159.
The objective of this study was to determine the effect of a marathon run on serum lipid and lipoprotein concentrations and serum muscle enzyme activities and follow their recovery after the run. These blood concentrations were measured before, immediately after, and serially after a marathon run in 15 male recreational runners. The triglyceride level was significantly elevated postrace, then fell 30% below baseline 1 day after the run, and returned to baseline after 1 week. Total cholesterol responded less dramatically but with a similar pattern. High-density lipoprotein cholesterol remained significantly elevated and low-density lipoprotein cholesterol was transiently reduced for 3 days after the run. The total cholesterol/high-density cholesterol ratio was significantly lowered for 3 days. Serum lactate dehydrogenase activity significantly doubled postrace and then declined but remained elevated for 2 weeks. Serum creatine kinase activity peaked 24 hr after the run, with a 15-fold rise, and returned to baseline after 1 week. The rise of these enzymes reflects mechanically damaged muscle cells leaking contents into the interstitial fluid. It is concluded that a prolonged strenuous exercise bout in recreational runners, such as a marathon, produces beneficial changes in lipid blood profiles that are significant for only 3 days. However, muscle damage is also evident for 1 week or more from the dramatic and long-lasting effect on enzyme levels. Laboratory values for these runners were outside normal ranges for some days after the race.  相似文献   
160.
It is well documented that government agencies, at all levels, continue to have problems ensuring that government web sites follow laws related to web accessibility for people with disabilities. Although there are a number of published studies on government web accessibility that are point-in-time, there are no published studies consisting of a longitudinal analysis of state-level government web site accessibility. This paper contributes to the research literature in three ways: 1) an accessibility inspection of 25 Maryland state government homepages in 2012 which involved 150 human inspections of web pages, 2) a comparison of the results from 2012 to a similar accessibility evaluation in 2009, and 3) a discussion of the role of a web page template, which was introduced in Maryland state government shortly after the 2009 evaluation. The data from this longitudinal evaluation leads to the conclusion that web page templates do tend to result in more accessible sites within state government.  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