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   2759篇
  免费   128篇
  国内免费   1篇
  2888篇
  2023年   19篇
  2022年   15篇
  2021年   35篇
  2020年   45篇
  2019年   57篇
  2018年   78篇
  2017年   81篇
  2016年   116篇
  2015年   57篇
  2014年   89篇
  2013年   332篇
  2012年   145篇
  2011年   144篇
  2010年   90篇
  2009年   80篇
  2008年   135篇
  2007年   116篇
  2006年   108篇
  2005年   85篇
  2004年   99篇
  2003年   95篇
  2002年   63篇
  2001年   61篇
  2000年   53篇
  1999年   40篇
  1998年   34篇
  1997年   36篇
  1996年   34篇
  1995年   40篇
  1994年   27篇
  1993年   31篇
  1992年   32篇
  1991年   27篇
  1990年   32篇
  1989年   19篇
  1988年   30篇
  1987年   16篇
  1986年   13篇
  1985年   21篇
  1984年   21篇
  1983年   14篇
  1982年   23篇
  1981年   11篇
  1979年   20篇
  1978年   12篇
  1977年   16篇
  1974年   17篇
  1972年   13篇
  1970年   11篇
  1968年   11篇
排序方式: 共有2888条查询结果,搜索用时 15 毫秒
91.
The gateway sign configuration has been effective at increasing motorist yielding and reducing speeds at crosswalks. A gateway configuration uses in-street signs at a crosswalk on each edge of the roadway and on each lane line. Although this intervention is effective at increasing motorist yielding at uncontrolled crosswalks, the limits of the intervention have yet to be tested. The present study examined if 1) the effects of the gateway intervention on one crosswalk would generalize to an untreated adjacent crosswalk, and 2) if the effects of an offset configuration of signs which partially treated each crosswalk could maximize the effects of that generalization. Experiment 1 showed that less yielding occurred at the untreated crosswalk than at the treated crosswalk, though yielding was higher than baseline. In Experiment 2, results showed that an offset gateway configuration could produce comparable levels of yielding at both crosswalks.  相似文献   
92.

The aim of this article is threefold. First, we seek to elicit the attitudes and practices of middle-aged and elderly Moroccan Muslim women towards ageing and care for the elderly. Second, we aim to identify possible differences between middle-aged and elderly women’s attitudes and practices. Third, we seek to explore which role religion plays in their attitudes and practices. Qualitative empirical research was conducted with a sample of middle-aged and elderly Moroccan Muslim women living in Antwerp (Belgium) (n = 30) and with experts in the field (n = 15). Our study unveils that ageing and care for the elderly are clearly understood from a religious framework. More specifically, theological and eschatological considerations take up a central position. Access to and utilization of professional elderly care is hampered by several barriers (e.g. religious, cultural and financial). We found a more open attitude towards professional elderly care among middle-aged women than among elderly women.

  相似文献   
93.

We investigate how epistemic injustice can manifest itself in mathematical practices. We do this as both a social epistemological and virtue-theoretic investigation of mathematical practices. We delineate the concept both positively—we show that a certain type of folk theorem can be a source of epistemic injustice in mathematics—and negatively by exploring cases where the obstacles to participation in a mathematical practice do not amount to epistemic injustice. Having explored what epistemic injustice in mathematics can amount to, we use the concept to highlight a potential danger of intellectual enculturation.

  相似文献   
94.
Shkatov  Dmitry  Van Alten  Clint J. 《Studia Logica》2020,108(2):221-237
Studia Logica - We apply the theory of partial algebras, following the approach developed by Van Alten (Theor Comput Sci 501:82–92, 2013), to the study of the computational...  相似文献   
95.
96.
Motivation and Emotion - Despite the theoretical importance and applied potential of situation modification as an emotion regulation strategy, empirical research on how people change situations to...  相似文献   
97.
Constant  Axel  Bervoets  Jo  Hens  Kristien  Van de Cruys  Sander 《Topoi》2020,39(3):611-622
Topoi - Autism Spectrum Condition (ASC) presents a challenge to social and relational accounts of the self, precisely because it is broadly seen as a disorder impacting social relationships. Many...  相似文献   
98.
Attention, Perception, & Psychophysics - Learning and imitating a complex motor action requires to visually follow complex movements, but conscious perception seems too slow for such tasks....  相似文献   
99.
Female rats, chronically treated with Testosterone Propionate (TP), were injected with Fluprazine (DU 27716) or saline and tested for social aggression, masculine and feminine sexual behavior. Fluprazine-treated females were less aggressive than saline-treated females, as indicated by a shift from offensive to less offensive parameters of aggression. At the same time, mounting in Fluprazine-treated females was almost totally abolished, both in aggression tests and in tests for sexual behavior. Feminine sexual responses increased during aggressive encounters but were slightly inhibited when females were confronted with sexually active males. Females treated with Fluprazine and tested for mounting with a receptive female showed a substantial increase of offensive aggression directed at the receptive stimulus female. It is concluded that Fluprazine does not selectively inhibit offensive aggression in TP-treated female rats.  相似文献   
100.
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