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   37553篇
  免费   511篇
  国内免费   25篇
教育   26569篇
科学研究   3784篇
各国文化   355篇
体育   3023篇
综合类   23篇
文化理论   430篇
信息传播   3905篇
  2021年   339篇
  2020年   530篇
  2019年   767篇
  2018年   1570篇
  2017年   1540篇
  2016年   1349篇
  2015年   664篇
  2014年   851篇
  2013年   6117篇
  2012年   828篇
  2011年   1050篇
  2010年   887篇
  2009年   784篇
  2008年   883篇
  2007年   929篇
  2006年   650篇
  2005年   616篇
  2004年   724篇
  2003年   570篇
  2002年   548篇
  2001年   710篇
  2000年   771篇
  1999年   625篇
  1998年   375篇
  1997年   419篇
  1996年   458篇
  1995年   348篇
  1994年   366篇
  1993年   319篇
  1992年   505篇
  1991年   518篇
  1990年   516篇
  1989年   522篇
  1988年   474篇
  1987年   474篇
  1986年   461篇
  1985年   532篇
  1984年   412篇
  1983年   416篇
  1982年   345篇
  1981年   336篇
  1980年   352篇
  1979年   484篇
  1978年   368篇
  1977年   336篇
  1976年   279篇
  1975年   258篇
  1974年   262篇
  1973年   253篇
  1971年   249篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
The Behavior Problem Checklist (Quay & Peterson, 1979) was completed by classroom teachers for 104 children and youth (64 boys and 40 girls) at a state residential school for the blind to determine the prevalence of problem behavior. Results were compared to earlier studies of behavior problems of nonhandicapped children and of two groups of hearing-impaired children, one living at home and attending a community program and a second group attending a state residential school. Results were more similar to those obtained with the hearing-impaired children in the residential setting than to either the nonhandicapped or the hearing-impaired living at home. Comparisons by sex failed to find statistically significant differences.  相似文献   
992.
Before choosing to become involved with students who currently are abusing psychoactive substances, teachers must consider not only the potential consequences and payoffs to them professionally, but also what specifically they can do to help adolescents. This article presents some of the philosophical problems, and suggests potential solutions of how to relate to students who engage in potentially self-destructive, drug-related behavior. There is a need for teachers to become quasi-counselors and consultants, since they are the first line of defense against substance use and abuse.  相似文献   
993.
994.
995.
BackgroundThe 6-minute walking distance (6MWD) is an excellent measure of both functional endurance and health. The primary aim of this study was to estimate temporal trends in 6MWD for older Japanese adults between 1998 and 2017; the secondary aim was to estimate concurrent trends in body size (i.e., height and mass) and self-reported participation in exercise/sport.MethodsAdults aged 65–79 years were included. Annual nationally representative 6MWD data (n = 103,505) for the entire period were obtained from the Japanese Ministry of Education, Culture, Sports, Science and Technology. Temporal trends in means (and relative frequencies) were estimated at the gender–age level by best-fitting sample-weighted linear/polynomial regression models, with national trends estimated by a post-stratified population-weighting procedure. Temporal trends in distributional variability were estimated as the ratio of coefficients of variation.ResultsBetween 1998 and 2017 there was a steady, moderate improvement in mean 6MWD (absolute = 45 m (95% confidence interval (95%CI): 43–47); percent = 8.0% (95%CI: 7.6%–8.4%); effect size = 0.51 (95%CI: 0.48–0.54)). Gender- and age-related temporal differences in means were negligible. Variability in 6MWD declined substantially (ratio of coefficients of variation = 0.89, 95%CI: 0.87–0.92), with declines larger for women compared to men, and for 75–79-year-olds compared to 65–74-year-olds. Correspondingly, there were moderate and negligible increases in mean height and mass, respectively, and negligible increases in the percentage who participated in exercise/sport at least 3 days per week and at least 30 min per session.ConclusionThere has been a steady, moderate improvement in mean 6MWD for older Japanese adults since 1998, which is suggestive of corresponding improvements in both functional endurance and health. The substantial decline in variability indicates that the temporal improvement in mean 6MWD was not uniform across the distribution. Trends in 6MWD are probably influenced by corresponding trends in body size and/or participation in exercise/sport.  相似文献   
996.
997.
This study seeks to determine if the same five bipolar factors that appear for the ideal role concepts of public school teachers also appear for parochial school teachers. Subjects included 185 teachers from a Catholic diocese. The data were factor analyzed by means of a principal axis analysis with varimax rotation. An analysis of variance was used to compare the factor analyses. The results indicated that parochial and public school teachers have similar factor structures. When comparing factor scores of the two groups, there were significant differences on several factors, indicating that parochial school teachers adopt a more facilitating role than do public school teachers.  相似文献   
998.
Individual empirical studies of motivation show little divergent validity of various factors and call for better measures, especially multidimensional instruments. The same conclusions were reached from a meta analysis of 40 motivation studies by Uguroglu and Walberg (1979). After a study of approximately 50 instruments that measured motivation constructs of social, emotional, and physical self-concept; locus of control; and achievement motivation, among others, a 23-anchored-item questionnaire using a five-point scale was developed that included these factors. The instrument was administered in May of the first and second year to 115 students in grades three through eight. The purpose of the research was to operationalize and field test a motivation instrument using multidimensional measures; also to consider whether any change would occur in the correlation of a multidimensional instrument to various achievement measures over unidimensional ones. Results of the study show the correlations of motivation to academic achievement, test-retest reliability, and the predictive validity of a multidimensional instrument.  相似文献   
999.
A set of behavioral procedures focusing on the academic and social behavior problems of a group of adolescent students was incorporated within the context of a regular school program. The procedures, which involved manipulating type and delay of reinforcement, teaching desirable behaviors that were self-reinforcing or that others would readily reinforce, and training in several skills that are prerequisite to selfcontrol, were implemented in several classrooms through an independent grouporiented contingency system. These students performed significantly better than a matched control group with respect to grade-point average, class grades, school attendance, and length of time absent due to suspension. Changes in the contingency system throughout the year yielded differential effects on three behavioral measures: class attendance, assignments completed, and classroom behavior. The significance of these findings is discussed, and suggestions are made for future research efforts.  相似文献   
1000.
This study attempts to replicate the findings of Santostefano, Rutledge, and Randell (1965), which demonstrated a relationship between the cognitive control called field articulation and reading disability in school-aged children. Two groups, reading disability and nonreading disability, were administered a series of cognitive control measures. The results confirm the findings of earlier studies that the cognitive control called field articulation is clearly implicated in the reading process. Performance on this control significantly differentiates between children who demonstrate reading disabilities and those who do not.  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