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   3071篇
  免费   179篇
  2023年   38篇
  2022年   63篇
  2021年   88篇
  2020年   114篇
  2019年   100篇
  2018年   185篇
  2017年   183篇
  2016年   157篇
  2015年   89篇
  2014年   115篇
  2013年   397篇
  2012年   225篇
  2011年   237篇
  2010年   144篇
  2009年   77篇
  2008年   192篇
  2007年   141篇
  2006年   124篇
  2005年   74篇
  2004年   65篇
  2003年   69篇
  2002年   45篇
  2001年   29篇
  2000年   36篇
  1999年   20篇
  1998年   17篇
  1997年   15篇
  1996年   7篇
  1995年   7篇
  1994年   12篇
  1993年   13篇
  1992年   6篇
  1991年   18篇
  1990年   8篇
  1989年   10篇
  1988年   9篇
  1987年   8篇
  1986年   9篇
  1985年   11篇
  1984年   5篇
  1982年   5篇
  1981年   8篇
  1980年   5篇
  1979年   5篇
  1972年   5篇
  1971年   7篇
  1968年   9篇
  1967年   4篇
  1966年   7篇
  1965年   8篇
排序方式: 共有3250条查询结果,搜索用时 31 毫秒
271.
Value transmission is a fundamental task of schools. However, the question arises as to how far prevailing political and social conditions shape the functioning of a country or a region’s school system. In other words: what effect do they have on the choice of values to be transmitted at schools? Are there any fundamental social values that are shared by different cultures at different times? Are there values that exist independently of social and political systems? These questions have a special relevance in Eastern and Central European countries like Hungary where political and social changes in the twentieth century had a crucial effect on the set of values that were transmitted by the school system. The aim of this study is to describe how the value transmitting role of the Hungarian school system has changed as a consequence of political transformations in recent decades.  相似文献   
272.
273.
274.
275.
276.
Nationalist movements are emerging today everywhere in the world. Many of them display a high level of aggression and a negative attitude toward sexuality and especially female sexuality. Along with this, erotic fiction with a sadomasochistic orientation has achieved great success and has hundreds of millions of readers in the world. This collective fantasy allows some integration of aggression in sexual life while questioning liberal morality and its equality in gender roles and conservative morality and its idea of control over passion. Both phenomena may represent different responses to the appearance of a new female sexuality threatening the social structure we know.  相似文献   
277.
278.
The principal aim of this study was to assess the level of selective attention and mental concentration before exams in a sample of university students and to determine a possible relationship between anxiety and reduction of levels of attention in this circumstance. A total of 403 university students, 176 men and 227 women, aged from 18 to 46 years, participated in the study. Of them, 169 were first‐year undergraduates, 118 were second to fourth‐year undergraduates and 116 were postgraduate Master's degree students. All of them completed the Spanish version of the Spielberger State‐Anxiety Inventory and the D2 Attention Test just before taking an exam. Our results showed that participants with lower levels of anxiety had higher levels of selective attention and mental concentration before the exam. These results specifically indicate that when anxiety levels are very high, this could over‐activate the orientating and alerting functions and to reduce the capacity of attentional control. These processes could have a negative impact on specific attentional processes and become a negative influence on performance in exams.  相似文献   
279.
Several evidences suggest that brain histamine is involved in memory consolidation but the actual contribution of the hippocampal histaminergic system to this process remains controversial. Here, we show that when infused into the CA1 region of the dorsal hippocampus immediately after training in an inhibitory avoidance task, but not later, histamine induced a dose-dependent promnesic effect without altering locomotor activity, exploratory behavior, anxiety state or retrieval of the avoidance response. The facilitatory effect of intra-CA1 histamine was mimicked by the histamine N-methyltransferase inhibitor SKF-91844 as well as by the H2 receptor agonist dimaprit and it was blocked completely by the H2 receptor antagonist ranitidine. Conversely, the promnesic action of histamine was unaffected by the H1 receptor antagonist pyrilamine, the H3 receptor antagonist, thioperamide, and the NMDAr polyamine-binding site antagonist ifenprodil. By themselves, ranitidine, pyrilamine, thioperamide, and ifenprodil did not affect IA memory consolidation. Our data indicate that, when given into CA1, histamine enhances memory consolidation through a mechanism that involves activation of H2 receptors; however, endogenous CA1 histamine does not seem to participate in the consolidation of IA memory at least at the post-training times analyzed.  相似文献   
280.
In this study the authors used cluster analysis to create racial identity profiles for a sample of Asian Americans using the People of Color Racial Identity Attitudes Scale (PCRIAS). A four-cluster solution was chosen: each cluster corresponded to one PCRIAS subscale and was named accordingly. Scores on the Asian American Racism-Related Stress Inventory and the Color-Blind Racial Attitudes Scale were compared across clusters. As expected, the Dissonance and Immersion clusters were characterized by relatively high racism-related stress and low levels of color-blind attitudes; the Conformity cluster showed roughly the opposite pattern. Surprisingly, the Internalization cluster showed a pattern similar to that for Conformity and thus may reflect "pseudoindependence" as discussed by Helms.  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