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   184003篇
  免费   8142篇
  国内免费   155篇
  2020年   2787篇
  2019年   3450篇
  2018年   3751篇
  2017年   4117篇
  2016年   4786篇
  2015年   3941篇
  2014年   4803篇
  2013年   23466篇
  2012年   5084篇
  2011年   4344篇
  2010年   4099篇
  2009年   4891篇
  2008年   4431篇
  2007年   3979篇
  2006年   4432篇
  2005年   4303篇
  2004年   3877篇
  2003年   3463篇
  2002年   3249篇
  2001年   4032篇
  2000年   3786篇
  1999年   3554篇
  1998年   2897篇
  1997年   2697篇
  1996年   2618篇
  1995年   2449篇
  1994年   2410篇
  1993年   2367篇
  1992年   2916篇
  1991年   2726篇
  1990年   2567篇
  1989年   2479篇
  1988年   2438篇
  1987年   2405篇
  1986年   2422篇
  1985年   2665篇
  1984年   2651篇
  1983年   2405篇
  1982年   2403篇
  1981年   2363篇
  1980年   2213篇
  1979年   2358篇
  1978年   2260篇
  1977年   2211篇
  1976年   2019篇
  1975年   2095篇
  1974年   2192篇
  1973年   2071篇
  1972年   1664篇
  1971年   1603篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
Adult age differences in the consistency effect were examined in 3 experiments. The consistency effect refers to items inconsistent with expectations being better remembered than items consistent with expectations. Younger and older adults walked into an office room and viewed objects that varied in their consistency with expectation. Immediate and delayed recognition tests on item information (i.e., distractors were defined by their semantic identity) revealed that both age groups recognized unexpected items better than expected items. However, when recognition of token information was requested (i.e., distractors were defined by their physical appearance), younger adults, in contrast to older adults, exhibited consistency effects. Also, under divided attention, young adults revealed the same pattern of data as did elderly adults under full attention. The results are discussed in terms of capacity-related differences in distinctive encoding.  相似文献   
53.
Range of electric vehicles (EVs) has long been considered a major barrier in acceptance of electric mobility. We examined the nature of how range is experienced in an EV and whether variables from other adaptation contexts, notably stress, have explanatory power for inter‐individual differences in what we term comfortable range. Forty EVs were leased to a sample of users for a 6‐month field study. Qualitative and quantitative analyses of range experiences were performed, including regression analyses to examine the role of stress‐buffering personality traits and coping skills in comfortable range. Users appraised range as a resource to which they could successfully adapt and that satisfied most of their daily mobility needs. However, indicators were found that suggested suboptimal range utilisation. Stress‐buffering personality traits (control beliefs, ambiguity tolerance) and coping skills (subjective range competence, daily range practice) were found to play a substantial role in comfortable range. Hence, it may be possible to overcome perceived range barriers with the assistance of psychological interventions such as information, training, and interface design. Providing drivers with a reliable usable range may be more important than enhancing maximal range in an electric mobility system.  相似文献   
54.
55.
56.
57.
58.
59.
60.
Introduction     
Journal of International Migration and Integration -  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