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   23597篇
  免费   419篇
  国内免费   32篇
教育   16984篇
科学研究   2038篇
各国文化   299篇
体育   1826篇
综合类   35篇
文化理论   204篇
信息传播   2662篇
  2022年   136篇
  2021年   247篇
  2020年   389篇
  2019年   538篇
  2018年   749篇
  2017年   834篇
  2016年   767篇
  2015年   463篇
  2014年   622篇
  2013年   4479篇
  2012年   591篇
  2011年   659篇
  2010年   519篇
  2009年   483篇
  2008年   549篇
  2007年   540篇
  2006年   465篇
  2005年   406篇
  2004年   388篇
  2003年   356篇
  2002年   399篇
  2001年   437篇
  2000年   413篇
  1999年   412篇
  1998年   223篇
  1997年   244篇
  1996年   263篇
  1995年   223篇
  1994年   217篇
  1993年   208篇
  1992年   310篇
  1991年   309篇
  1990年   335篇
  1989年   316篇
  1988年   306篇
  1987年   260篇
  1986年   265篇
  1985年   328篇
  1984年   271篇
  1983年   265篇
  1982年   205篇
  1981年   209篇
  1980年   191篇
  1979年   249篇
  1978年   217篇
  1977年   198篇
  1976年   164篇
  1975年   132篇
  1974年   124篇
  1973年   151篇
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
991.
Abstract

Four sprint starting positions—the bunch, medium, elongated, and hyperextended—were compared on mean elapsed times at distances of 10 and 30 yd. Averages of three starts for each of 30 inexperienced college undergraduate males on each type of start were derived from electronically-controlled measures, the times for both distances being recorded from the same start. Statistical analyses indicated significantly lower elapsed times with the hyperextended starting position.  相似文献   
992.
Aging and its effects on a person's quality of life are a growing health concern and burden for many Americans. Recently, studies have shown that adopting certain healthy behaviors may help maintain and or prevent age-related health issues such as cognitive decline. However, many people are unaware of these newfound facts. Furthermore, there is insufficient research evidence to understand how older adults view brain health and the differences between diverse groups of older adults. This study examines brain health knowledge and behaviors among Caucasian and African-American community-dwelling older adults in North Carolina. Findings were significant for level of education and total brain health knowledge scores, though there were no significant differences between races. In addition, there was a significant association between total number of health conditions and total brain health knowledge scores that warrants further study.  相似文献   
993.
994.
A Seminar targeting academically at‐risk sophomores was developed and introduced in 2002 to address weak connectedness to the university and poor academic abilities. We measured changes in approaches taken to college studies by those at‐risk sophomores who enrolled in the course, as well as employed a longitudinal, quasi‐experimental design to track this experimental group (n = 29) and the remainder of the at‐risk cohort as a comparison group (n = 36). Our preliminary findings suggest that the Seminar has had a variety of positive outcomes, the most impressive impact being that the experimental group had dramatically better retention and graduation rates than the comparison group.  相似文献   
995.
996.
In an effort to establish a baseline of technology competency among our entering education students, our College of Education began implementing the Assessment of Technology Competencies (ATC) in Fall 2003. This performance-based assessment evaluates word-processing, presentation, spreadsheet, graphic/drawing, and Internet skills. Although students are not required to pass the ATC, failure impacts their final grade in an Introduction to Education course. This paper explores the impact this assessment has had on the students' use and development of technology in subsequent courses. Student perceptions of the ATC and its impact were elicited through a self-reported survey administered in a junior-level education course. Results indicate that the ATC has facilitated technology use among the participants. Respondents also revealed that their high school experiences with technology adequately prepared them for passing the ATC, despite the fact that most students are unable to pass the ATC in the first attempt.  相似文献   
997.
998.
999.
This article discusses the development and implementation of a technology-supported student teacher performance assessment that supports integration with a larger electronic assessment system. The authors spearheaded a multidisciplinary team to develop a comprehensive performance assessment based on the Pathwise framework. The team collaborated with a third party vendor to implement and field test these assessments supported with mobile technologies in the field. Twenty supervisors completed the field test using 10 iPAQ PDAs and 10 laptops. Eighteen participated in a posttest survey and eight in a focus group debriefing session. Supervisors were overwhelmingly positive about the experience, the value of the updated assessments, and the ongoing plans to support field observations with mobile technologies. However, issues related to training, support, and trust loom largely for successful adoption, diffusion, and successful use of technology-supported assessments.  相似文献   
1000.
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