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   5767篇
  免费   18篇
  国内免费   4篇
  5789篇
  2022年   35篇
  2021年   45篇
  2020年   45篇
  2019年   54篇
  2018年   217篇
  2017年   182篇
  2016年   277篇
  2015年   130篇
  2014年   78篇
  2013年   203篇
  2012年   306篇
  2011年   289篇
  2010年   62篇
  2009年   83篇
  2008年   95篇
  2007年   69篇
  2006年   82篇
  2005年   1337篇
  2004年   667篇
  2003年   452篇
  2002年   142篇
  2001年   34篇
  2000年   24篇
  1999年   29篇
  1998年   14篇
  1995年   16篇
  1994年   15篇
  1993年   14篇
  1992年   32篇
  1991年   44篇
  1990年   63篇
  1989年   47篇
  1988年   33篇
  1987年   48篇
  1986年   40篇
  1985年   34篇
  1984年   31篇
  1983年   27篇
  1982年   16篇
  1979年   37篇
  1975年   30篇
  1974年   36篇
  1973年   34篇
  1972年   26篇
  1971年   28篇
  1970年   20篇
  1969年   21篇
  1968年   16篇
  1967年   19篇
  1966年   16篇
排序方式: 共有5789条查询结果,搜索用时 0 毫秒
41.
We investigated the role of implicit and explicit associations between harm and COVID-19 vaccines using a large sample (N = 4668) of online volunteers. The participants completed a brief implicit association test and explicit measures to evaluate the extent to which they associated COVID-19 vaccines with concepts of harmfulness or helpfulness. We examined the relationship between these harmfulness/helpfulness COVID-19 vaccine associations and vaccination status, intentions, beliefs, and behavior. We found that stronger implicit and explicit associations that COVID-19 vaccines are helpful relate to vaccination status and beliefs about the COVID-19 vaccine. That is, stronger pro-helpful COVID-19 vaccine associations, both implicitly and explicitly, related to greater intentions to be vaccinated, more positive beliefs about the vaccine, and greater vaccine uptake.  相似文献   
42.
43.
44.
45.
46.
47.
The Pulfrich pendulum was evaluated as a potential screening device for the detection of anomalies of binocular vision. For this purpose, a booth was set up at the Kentucky State Fair (1964) and the general public invited to observe the pendulum and record their responses with the equipment provided. The obtained results indicate that a dichotomy can be achieved between those who have binocular vision and those who do not. However, gradations of binocular vision from poor to good cannot be achieved with the pendulum as presently understood. Contrary to explanatory theory the characteristic shape of the seen pendulum path was asymmetrical following the rule that the path was displaced away from the observer on the side of the filtered eye.  相似文献   
48.
49.
Crises and critical life transitions activate 2 distinct but complementary modes of coping, (a) transforming developmental circumstances in accordance with personal preferences (assimilative tendency) and (b) adjusting personal preferences to situational constraints (accommodative tendency). Assimilative and accommodative tendencies were measured by a questionnaire comprising 2 independent scales (Tenacious Goal Pursuit and Flexible Goal Adjustment). Both scales predict high life satisfaction and low depression and are positively related to generalized internal control beliefs. The scales evinced an opposite relation to age: Cross-sectional analyses on a sample of 890 Ss in the age range from 34 to 63 years revealed a gradual shift from an assimilative to an accommodative mode of coping. Implications for theories of depression and successful aging are discussed.  相似文献   
50.
Hardware is described that permits bidirectional transfer of data between the Commodore 64 and an IBM-compatible PC. Commercial terminal programs can be used to transmit data. The hardware, which can be constructed for less than $15, opens up several opportunities for making good use of the cost-effective C64 computer.  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