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   2371篇
  免费   104篇
  国内免费   14篇
  2489篇
  2025年   2篇
  2024年   31篇
  2023年   52篇
  2022年   38篇
  2021年   81篇
  2020年   144篇
  2019年   173篇
  2018年   144篇
  2017年   131篇
  2016年   138篇
  2015年   93篇
  2014年   115篇
  2013年   456篇
  2012年   81篇
  2011年   72篇
  2010年   68篇
  2009年   82篇
  2008年   93篇
  2007年   77篇
  2006年   57篇
  2005年   60篇
  2004年   38篇
  2003年   22篇
  2002年   13篇
  2001年   10篇
  2000年   16篇
  1999年   10篇
  1998年   9篇
  1997年   8篇
  1996年   10篇
  1995年   7篇
  1994年   8篇
  1993年   4篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1986年   1篇
  1985年   14篇
  1984年   15篇
  1983年   11篇
  1982年   9篇
  1981年   19篇
  1980年   10篇
  1979年   10篇
  1978年   9篇
  1977年   14篇
  1976年   3篇
  1975年   10篇
  1974年   7篇
  1973年   10篇
排序方式: 共有2489条查询结果,搜索用时 15 毫秒
971.
Abstract

This study examined differences in self-reported coping strategies across children classified according to Weinberger et al.'s (1979) adaptive style paradigm. Consistent with the larger literature, it was hypothesized that repressors (i.e. characterized by high self-reported defensiveness and low self-reported distress) would endorse fewer behaviorally and cognitively avoidant coping strategies than other adaptive style groups. Participants included 134 children, ranging in age from 10 to 13 (M=11.26, sd=.59), who completed measures of defensiveness, trait anxiety, and coping. Consistent with the hypotheses, results indicated significantly lower endorsement of avoidant coping strategies, and significantly higher endorsement of approach-oriented strategies among repressors, but no significant differences across adaptive style groups for other forms of coping. Results indicate that, consistent with other indicators of psychological functioning, the measurement of coping strategies is subject to the effects of socially desirable responding. Further, results provide evidence that measures of coping may be contaminated by items reflecting adjustment problems.  相似文献   
972.
This study is designed to examine how biological knowledge is organized and structured in children. Five- to nine-year-old children's interpretations of biological phenomena are studied by examining to what extent the transmission of different kinds of properties is perceived as being causally related to birth origins. A property generalization task is used, in which biological relations (birth origins) are pitted against adoptive relations. The characteristics to be generalized correspond to non-obvious biological characteristics, visible physic characteristics or behavioural characteristics. Our results show that five-year-old children do not understand the origin of these characteristics. A conceptual change seems to be at work by the age of seven but the delimitation of biological categories remains imperfect.  相似文献   
973.
One of the major functions of academic journals is to contribute to the evaluation of research activities and scientists. Invented more than 50 years ago, the ISI impact factor (IF) became the most important indicator of the quality of journals, in spite of well-known problems and critics such as the over-representation of English-language journals. This is a specific problem for French publishers and scientists; publishing in French is not valorising. Since 2007, the new SCImago Journal Rank Indicator (SJR) offers an alternative to the IF. SJR applies the Google algorithm (PageRank) to the journals of the SCOPUS bibliographic database that indexes more journals than ISI Web of Science. The goal of our study is to compare the two indicators for French academic journals, with three questions: Which is the coverage of French journals by ISI and SCOPUS (title number, scientific disciplines)? Which are the differences of the two indicators IF and SJR for the ranking of French journals? How do they cover the French academic journal publishing market (representativity)? The results of our study of 368 French journals with IF and/or SJR are in favour of the usage of the new indicator, at least as a complement to the IF. (1) Coverage: 166 journals are indexed by ISI (45%), 345 journals are indexed by SCOPUS (94%), 143 journals are indexed by both (39%). 82% of the journals are from STM, 18% are from SS&H. In particular, SCOPUS covers much better the medical and pharmacological sciences. (2) Ranking: The correlation of IF and SJR for the 143 journals with both indicators is high (0.76). The IF better differentiates the journals than the SJR indicator (155 vs. 89 rankings). On the other side, because of the larger source database, more French titles become visible on an international level through SJR than through IF. (3) Representativity: The SJR is more interesting and representative of the French academic journal publishing market than the IF (19% vs. 9%), especially for STM titles (38% vs. 19%), much less for SS&H titles (6% vs. 2%). Nevertheless, ISI (Web of Science) and SCOPUS index journals from only a small part of the French academic publishers (10%–20%). Again, SCOPUS is more representative than the ISI dababase (17% of the publishers vs. 10%). Methodological problems and perspective of a multidimensional evaluation are discussed. Our study compares the ISI impact factor (IF) with the new SJR for 368 French academic journals with IF and/or SJR. The results: The SJR coverage is better than of the IF (94% vs. 45%), especially in medical sciences. The correlation of IF and SJR for journals with both indicators is high (0.76). The IF better differentiates the journals than the SJR indicator (155 vs. 89 rankings). The SJR coverage is more representative of the French academic journal publishing market than ISI/IF (19% vs. 9%), especially for STM titles (38% vs. 19%), less for SS&H titles (6% vs. 2%).  相似文献   
974.
探讨大动脉炎的多层螺旋CT血管成像表现及其临床应用价值。回顾分析大动脉炎的多层螺旋CT血管成像表现并结合大量文献进行分析讨论。3例大动脉炎患者血管成像表现为动脉管腔狭窄、扩张及管壁增厚。多层螺旋CT血管成像可同时显示大动脉炎的管壁改变和管腔情况,对大动脉炎早期诊断、治疗方法选择有重要意义。  相似文献   
975.
This research captures the diversity of family patterns among gifted adolescents (IQ ≥ 130). Data on the perceived parental's support and investment in schooling, family relationships and sociobiographic characteristics were collected by questionnaire from 255 French junior high school gifted students (48 girls, 207 boys), aged 9 to 15 (M = 12.5; SD = 1.51). A hierarchical cluster analysis highlights the existence of four types differentiated, thereby going against a standardized and stereotypical representation of this population.  相似文献   
976.
Multidimensional scaling procedures were used to investigate developmental changes in the ability to process previously unfamiliar faces. Eighty male subjects, aged 7, 9, 12, or adult, rated the similarity of pairs of faces. The faces were presented to subjects in either the upright or the inverted orientation. Multidimensional scaling analyses suggest that subjects of all ages use similar information in judging the similarity of faces. However, for upright faces, individual subjects under age 10 seem to use fewer features at a time. The results argue against a qualitative shift in face processing at age 10, and suggest that the improvement in face recognition ability noted at this age is due at least in part to an increased ability to consider more features simultaneously.  相似文献   
977.
教育无国界是有识之士的共识,也是不可逆转的潮流。中国采取在世界各地建立孔子学院的形式加大吐人对汉语和中国的教育的认识,文章从孔子学院在世界各地的运作形式,阐述了孔子学院发展近四年多来对世界的影响和世界对汉语和中国教育的国际化认同以及对有关的问题进行了反思。  相似文献   
978.
There is confusion among scholars of Bohr as to whether he should be categorized as an instrumentalist (see Faye 1991) or a realist (see Folse 1985). I argue that Bohr is a realist, and that the confusion is due to the fact that he holds a very special view of realism, which did not coincide with the philosophers’ views. His approach was sometimes labelled instrumentalist and other times realist, because he was an instrumentalist on the theoretical level, but a realist on the level of models. Such a realist position is what I call phenomenological realism. In this paper, and by taking Bohr’s debate with Einstein as a paradigm, I try to prove that Bohr was such a realist.
Towfic ShomarEmail:
  相似文献   
979.
Mel Gibsons film is a creative reworking of opportunities provided by migrating to Australia as a boy and a life-long desire to be reconciled to his father, Hutton Gibson. If the film is read as a study in psychology and biography, then biblical and theological critiques, along with contemporary politically correct stances towards what Gibson did, can be set temporarily aside in search of a larger trajectory of meaning implicit in the film. The embodied nature of the film, along with other violent films in which Gibson starred in the past three decades, points to wellsprings of power in the blood. Violence becomes an idiom of reconciliation with authority. Gibsons relationship to his father plays a major role in such a reading of the film. A continuous reconciliation with his father is evident not only in thematic continuities over the course of Mel Gibsons professional acting career and starring roles. It also structures the directors construction of Christs Passion. A desire not to be forsaken gives rise to this idiosyncratic and controversial film, itself a cinematic statement about Gibsons own personal spiritual torment.Richard A. Hutch is Director of Studies of the Faculty of Arts and Reader in Religion and Psychological Studies in the School of History, Philosophy, Religion, and Classics at the University of Queensland in Brisbane, Australia 4072.  相似文献   
980.
小学儿童的尊重观念及其发展   总被引:2,自引:0,他引:2  
以开放式尊重观念问卷对小学三到六年级儿童进行集体施测研究儿童的尊重观念,结果发现:(1)小学儿童认为尊重就是有礼貌,尊重对象的特征和尊重原因都是要求对方品质好或学习好。尊重的对象既有长辈又有同辈,提到尊重同辈的显著多于只尊重长辈的。不同的人际背景下,儿童的尊重观念不一致。(2)小学儿童的尊重观念具有显著的发展特征,表现出从单向尊重到双向尊重的发展趋势。不同人际关系下的尊重观念的发展特征不同,对父母和老师的尊重主要为单向尊重,对朋友的尊重主要为双向尊重。(3)小学儿童的尊重观念具有显著的性别差异。  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