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   56355篇
  免费   2384篇
  国内免费   21篇
  2020年   696篇
  2019年   811篇
  2018年   1140篇
  2017年   1182篇
  2016年   1226篇
  2015年   877篇
  2014年   1056篇
  2013年   4926篇
  2012年   1961篇
  2011年   1945篇
  2010年   1164篇
  2009年   1208篇
  2008年   1683篇
  2007年   1661篇
  2006年   1517篇
  2005年   1254篇
  2004年   1305篇
  2003年   1236篇
  2002年   1180篇
  2001年   1936篇
  2000年   1814篇
  1999年   1356篇
  1998年   633篇
  1997年   539篇
  1996年   622篇
  1995年   562篇
  1994年   545篇
  1993年   536篇
  1992年   1107篇
  1991年   1028篇
  1990年   1005篇
  1989年   954篇
  1988年   929篇
  1987年   853篇
  1986年   855篇
  1985年   898篇
  1984年   731篇
  1983年   618篇
  1979年   757篇
  1978年   561篇
  1975年   606篇
  1974年   686篇
  1973年   705篇
  1972年   606篇
  1971年   563篇
  1970年   486篇
  1969年   481篇
  1968年   612篇
  1967年   531篇
  1966年   508篇
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
81.
Previous work from our laboratory showed that intermittently re-exposing rats to reinforcement for lever pressing in a training (A) context, while eliminating lever pressing in a second (B) context, increased ABA renewal of lever pressing relative to rats that experienced only Context B during response elimination. In the current study, we replicated these procedures while assessing renewal in the presence of a novel context (i.e., ABC renewal). Unlike the findings described above, renewal was reduced in the group that experienced re-exposure to Context A during lever-press elimination relative to rats that experienced only Context B. These findings suggest that alternating between contexts associated with reinforcement and extinction during treatment reduces the probability that organisms will respond in novel contexts. These outcomes may be the result of discrimination and/or generalization processes. Moreover, this training procedure may offer a potential mitigation strategy for ABC renewal.  相似文献   
82.
83.
Despite this virtue's history as an instrument of women's oppression, modesty, at its most basic, means voluntary restraint of one's power, undertaken for the sake of others. It is a mechanism that modifies unequal power relationships and encourages greater compassion and fairness. I use a Christian perspective with influences from Jewish and Muslim sources to examine modesty. The modest person, I argue, must be in relationship with others, must be honestly aware of her impacts on others, must be sensitive to those impacts, compassionate toward others, and willing to hold back for others' sakes. Moreover, modesty is not only a virtue that pertains to sexuality and clothing, but it also can promote virtuous environmental behavior, particularly as it leads to awareness of, and sensitivity to, the effects of everyday behaviors on vulnerable others.  相似文献   
84.
Although a great deal of research has been conducted on the relationship between social support and physical health, the contribution of personality characteristics to this relationship has rarely been assessed. Structural equation modeling was employed to derive and test a model of the direct and indirect relationships between personality characteristics, social network size, the perceived availability of support, socially supportive behaviors, and perceived physical health with a sample of Pennsylvania adults. Significant paths indicate that individuals who perceive themselves as affiliative and as help seekers and help givers report larger social networks, receive more socially supportive behaviors, and perceive that more support is available to them. The perception that support is available shared a direct relationship with perceived physical health. The utility of including multiple measures of social support and personality characteristics related to receiving support in investigations of the relationship between social support and physical health is discussed.  相似文献   
85.
86.
87.
88.
89.
90.
This study examined information communication technologies and workplace friendship dynamics. Employees reported factors that influenced their initiation of friendship with a coworker and reported patterns and perceptions of communication with their workplace friend via different communication methods. Results indicated that personality, shared tasks, and perceived similarity are the most important factors to coworker friendship initiation, and the importance of physical proximity to workplace friendship is diminishing in the electronically connected workplace. Results confirm the primacy of face‐to‐face interaction for workplace friendship initiation and maintenance. E‐mail, phone, and texting were also central to communication among workplace friends. The amount of time spent telecommuting affected workplace friendship initiation and communication. Finally, generational differences were identified with respect to Internet‐based communication methods.  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