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   8554篇
  免费   75篇
  国内免费   8篇
教育   5828篇
科学研究   1112篇
各国文化   50篇
体育   607篇
综合类   3篇
文化理论   53篇
信息传播   984篇
  2022年   54篇
  2021年   101篇
  2020年   132篇
  2019年   178篇
  2018年   297篇
  2017年   271篇
  2016年   264篇
  2015年   160篇
  2014年   271篇
  2013年   1391篇
  2012年   205篇
  2011年   237篇
  2010年   203篇
  2009年   182篇
  2008年   224篇
  2007年   191篇
  2006年   170篇
  2005年   153篇
  2004年   173篇
  2003年   127篇
  2002年   131篇
  2001年   195篇
  2000年   200篇
  1999年   180篇
  1998年   94篇
  1997年   127篇
  1996年   106篇
  1995年   75篇
  1994年   96篇
  1993年   68篇
  1992年   164篇
  1991年   124篇
  1990年   116篇
  1989年   144篇
  1988年   127篇
  1987年   102篇
  1986年   107篇
  1985年   108篇
  1984年   79篇
  1983年   92篇
  1982年   60篇
  1981年   72篇
  1980年   61篇
  1979年   103篇
  1978年   66篇
  1977年   63篇
  1976年   55篇
  1975年   50篇
  1974年   60篇
  1973年   56篇
排序方式: 共有8637条查询结果,搜索用时 0 毫秒
971.
We showed, as had previous investigators, that young rats formed taste-sickness associations that were weaker than those of mature rats; associations were not formed over a delay greater than 45 min, and aversions did not survive a 60-min test session. The difficulty young rats had withholding consumption and their poor sensitivity to taste and sickness contributed to the weak aversions. Choice tests revealed aversions that had apparently extinguished during a no-choice test, and animals that were allowed to mature prior to the first test readily withheld consumption for 60 min. Furthermore, young rats formed an aversion over a delay of 2.5 h when the concentrations of saccharin and lithium chloride were increased. Aversions to the stronger saccharin did not extinguish over two one-bottle tests and were retained for 52 days.  相似文献   
972.
973.
OBJECTIVE: The Trauma Symptom Checklist for Young Children (TSCYC) is a 90-item caretaker-report measure of children's trauma- and abuse-related symptomatology. It contains two reporter validity scales and eight clinical scales [Post-traumatic Stress-Intrusion (PTS-I), Post-traumatic Stress-Avoidance (PTS-AV), Post-traumatic Stress-Arousal (PTS-AR), Post-traumatic Stress-Total (PTS-TOT), Sexual Concerns (SC), Dissociation (DIS), Anxiety (ANX), Depression (DEP), and Anger/Aggression (ANG)], as well as an item assessing hours per week of caretaker contact with the child. This paper introduces the TSCYC and describes its psychometric properties in a multisite validity study. METHOD: A total of 219 TSCYCs administered by six clinician/researchers across the United States were analyzed for scale reliability and association with several types of childhood maltreatment. RESULTS: The TSCYC clinical scales have good reliability and are associated with exposure to childhood sexual abuse, physical abuse, and witnessing domestic violence. The PTS-I, PTS-AV, PTS-AR, and PTS-TOT scales were most predictive, followed by SC in the case of sexual abuse and DIS in the case of physical abuse. There were a small number of age, sex, and race effects on TSCYC scores. CONCLUSIONS: The TSCYC appears to have reasonable psychometric characteristics, and correlates as expected with various types of trauma exposure. Subject to continued validation and the development of general population norms, its use as a clinical measure is supported.  相似文献   
974.
This study contributes to the development of a positive framework for effective public schools in 2 ways. First, it advances the construct self-regulatory climate as consisting of 3 generative school norms—collective faculty trust in students, collective student trust in teachers, and student-perceived academic emphasis. The authors argue these norms signal a school climate supportive of student psychological needs. Second, they test the predictive validity of self-regulatory climate by empirically examining its relationship with school performance. Results of structural equation modeling support the theory that collective faculty trust in students, collective student trust in teachers, and student-perceived academic emphasis combine to form a self-regulatory climate that has positive consequences for urban school performance.  相似文献   
975.
Coping with racial discrimination can be a complex and challenging endeavor, because individuals often feel powerless and stigmatized. Social support can help people cope more effectively with racial discrimination. This study examines the type and quality of supportive communication in an online forum for people who have experienced racial discrimination by examining messages’ person centeredness and facework. A total of 1,203 messages from an online support forum were coded for support type, person centeredness, and facework features. Despite the sheer volume of support, most messages were only moderately person centered, and most advice messages did not adequately attend to targets’ negative face. Our findings uncover some of the benefits and limitations of online social support, and we discuss implications for online forum moderators and participants.  相似文献   
976.
Although college students' epistemological orientation largely determines how they approach, interpret, and learn in higher educational contexts, little is known about the student characteristics which reliably predict the orientation. Thus, the aim of this study was to determine the relative potency of different student characteristics potentially salient to differentiating epistemological view. The student variables evaluated were demographic (major and sex), verbal ability, and learning style (four scales from the Inventory of Learning Processes). Results of correlational and multiple regression analyses reveal that only students verbal skill accounted for a significant percent of the variance in epistemological orientation. The results are discussed in terms of the meaning of the orientation, its relevance to practitioners, and implications for further investigation.  相似文献   
977.
978.
979.
980.
ABSTRACT

Knowledge and human identity are socially constructed phenomena. Like other aspects of human identity, teacher identity is shaped through social influences. Some of the social influences that contribute to teacher identity development happen through critical incidents that teachers or teacher candidates experience. The current study, adopting a critical incident analysis perspective, attempts to ascertain the nature of the critical incidents that 49 pre-service teachers of EFL have experienced throughout their English learning process. It also tries to uncover the effects of these critical incidents on their English learning and teacher identity. The data for the research was collected using a Critical Incident Form developed by the researchers and focus group interviews. The findings indicated that pre-service ELT teachers’ early learning experiences included certain critical incidents. An inductive quantitative analysis of these incidents revealed that they can be categorized into three themes: people, context, and outcome. Exploring the nature of critical incidents and their role in the construction of English language teacher identity will hopefully be a benefit to teachers and teacher educators.  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