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   10135篇
  免费   115篇
  国内免费   122篇
教育   6422篇
科学研究   1265篇
各国文化   90篇
体育   1633篇
综合类   20篇
文化理论   66篇
信息传播   876篇
  2021年   80篇
  2020年   154篇
  2019年   200篇
  2018年   281篇
  2017年   281篇
  2016年   267篇
  2015年   187篇
  2014年   238篇
  2013年   1562篇
  2012年   216篇
  2011年   227篇
  2010年   191篇
  2009年   213篇
  2008年   190篇
  2007年   181篇
  2006年   199篇
  2005年   170篇
  2004年   381篇
  2003年   351篇
  2002年   338篇
  2001年   400篇
  2000年   240篇
  1999年   163篇
  1998年   108篇
  1997年   98篇
  1996年   96篇
  1995年   107篇
  1994年   101篇
  1993年   77篇
  1992年   152篇
  1991年   118篇
  1990年   135篇
  1989年   149篇
  1988年   110篇
  1987年   130篇
  1986年   120篇
  1985年   136篇
  1984年   119篇
  1983年   123篇
  1982年   96篇
  1981年   81篇
  1980年   90篇
  1979年   135篇
  1978年   89篇
  1977年   72篇
  1976年   89篇
  1975年   65篇
  1974年   72篇
  1973年   68篇
  1971年   66篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
161.
162.
163.
This article examines the relationship between marijuana use and anxiety symptoms among college students, with a secondary focus on marijuana use and grade point average (GPA). A secondary analysis was conducted on data obtained from the American College Health Association–National College Health Assessment. Results indicated that marijuana use was negatively associated with GPA among students with current anxiety and no formal treatment. The relationships between these variables may be more complex than previously thought.  相似文献   
164.
Tertiary Education and Management - In the highly dynamic, competitive and uncertain environment of tertiary education, universities nowadays have to intensify marketing communication to address...  相似文献   
165.
Research in Science Education - Studies have investigated various aspects of the use of questions in science lessons, but there is still a lack of research that demonstrates how, during peer...  相似文献   
166.
This paper provides tables of critical values for determining statistically significant discrepancies between Wechsler Verbal/Performance IQ and WIAT subtest and composite scores based on a predicted-achievement method. It is recommended that these tables be used when a statistically significant and diagnostically meaningful Verbal IQ-Performance IQ discrepancy exists rendering either of these IQs a better estimate of a student's ability than the Full Scale IQ. Issues regarding the use of discrepancy formulas in the assessment and diagnosis of learning disabilities are discussed, and basic considerations for using the critical values tables are provided.  相似文献   
167.
The on-going Coronavirus disease(COVID-19)outbreak in China has become the world's leading health headline and is causing major panic and public concerns.On January 30,2020,the World Health Organization(WHO)declared that the new coronavirus outbreak is a public health emergency of international concern.1 The virus has already had a direct impact on more than 10 million people in the city of Wuhan and has reached other parts of China as well,posing a health threat of unknown magnitude globally.As of February 8,2020,WHO reported 34,886 confirmed cases of COVID-19 globally,with 34,589 of them occurring in China(including 6101 severe cases and 723 deaths).A total of 288 other confirmed cases(with 1 death)have been reported in 24 countries,including Japan,Australia,Germany,and United States.2 However,these daily estimates are expected to rise even higher as reports from health authorities in China3 are gathered and near real-time updates of the Johns Hopkins virus dashboard are made 4 The outbreak has caused governments in various countries to take swift and protective measures.In China,these included putting cities on lockdown,5 implementing travel wamings/bans and cancellations,6 extending national holidays,and closing schools and postponing classes7.  相似文献   
168.
The influence of sociocultural factors (ethnicity, socioeconomic status, father absence, and family size) on special education eligibility was examined for three ethnic groups. A multiple regression procedure was used to analyze the data on 300 students referred for evaluation and found to be either not eligible for services or eligible for services as mentally retarded or learning disabled. Results indicated that only socioeconomic status and ethnicity made a significant contribution to the prediction of all three groups. Individually, father absence and family size did not contribute to the prediction of special education eligibility. Results of this study suggest that legislative mandates to control for sociocultural factors in the determination of special education eligibility have been only partially successful.  相似文献   
169.
The present experiment sought to further understanding of the effects of personalised audiovisual stimuli on psychological and psychophysiological responses during exercise in adults with obesity. Twenty-four participants (Mage = 28.3, SD = 5.5 years; MBMI = 32.2, SD = 2.4) engaged in self-paced exercises on a recumbent cycle ergometer and three conditions (sensory stimulation [ST], sensory deprivation [DE], and control [CO]) were administered. Perceptual (attentional focus and perceived exertion), affective (affective state and perceived activation), and psychophysiological (heart rate variability) parameters were monitored throughout the exercise bouts. A one-way repeated measures analysis of variance was used to compare self-reported and psychophysiological variables (main and interaction effects [5 Timepoints × 3 Conditions]). The results indicate that ST increased the use of dissociative thoughts throughout the exercise session (ηp2 = .19), ameliorated fatigue-related symptoms (ηp2 = .15) and elicited more positive affective responses (ηp2 = .12) than CO and DE. Accordingly, personally-compiled videos are highly effective in ameliorating exertional responses and enhancing affective valence during self-paced exercise in adults with obesity. Audiovisual stimuli could be used during the most critical periods of the exercise regimen (e.g., first training sessions) when individuals with obesity are more likely to focus on fatigue-related sensations.  相似文献   
170.
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