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   164770篇
  免费   7588篇
  国内免费   155篇
  2021年   1476篇
  2020年   2757篇
  2019年   3418篇
  2018年   3399篇
  2017年   3827篇
  2016年   4520篇
  2015年   3894篇
  2014年   4771篇
  2013年   23348篇
  2012年   4281篇
  2011年   3223篇
  2010年   3736篇
  2009年   4677篇
  2008年   3512篇
  2007年   3059篇
  2006年   3750篇
  2005年   3760篇
  2004年   3254篇
  2003年   2886篇
  2002年   2707篇
  2001年   3099篇
  2000年   2974篇
  1999年   2989篇
  1998年   2792篇
  1997年   2639篇
  1996年   2562篇
  1995年   2390篇
  1994年   2360篇
  1993年   2310篇
  1992年   2463篇
  1991年   2308篇
  1990年   2177篇
  1989年   2084篇
  1988年   2034篇
  1987年   2081篇
  1986年   2049篇
  1985年   2249篇
  1984年   2410篇
  1983年   2228篇
  1982年   2327篇
  1981年   2295篇
  1980年   2155篇
  1979年   2061篇
  1978年   2122篇
  1977年   2099篇
  1976年   1872篇
  1975年   1877篇
  1974年   1921篇
  1973年   1770篇
  1972年   1381篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
51.
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   
52.
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   
53.
54.
55.
56.
57.
58.
59.
Introduction     
Journal of International Migration and Integration -  相似文献   
60.
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