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   745篇
  免费   41篇
  国内免费   1篇
  2024年   4篇
  2023年   10篇
  2022年   15篇
  2021年   17篇
  2020年   40篇
  2019年   27篇
  2018年   50篇
  2017年   40篇
  2016年   37篇
  2015年   20篇
  2014年   21篇
  2013年   76篇
  2012年   41篇
  2011年   43篇
  2010年   24篇
  2009年   23篇
  2008年   32篇
  2007年   26篇
  2006年   22篇
  2005年   31篇
  2004年   17篇
  2003年   14篇
  2002年   20篇
  2001年   5篇
  2000年   7篇
  1999年   14篇
  1998年   5篇
  1997年   7篇
  1996年   5篇
  1995年   12篇
  1994年   8篇
  1993年   9篇
  1992年   8篇
  1991年   8篇
  1990年   6篇
  1989年   8篇
  1988年   3篇
  1987年   7篇
  1986年   5篇
  1985年   2篇
  1983年   2篇
  1982年   3篇
  1981年   2篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
  1975年   2篇
  1971年   1篇
  1970年   1篇
  1967年   1篇
排序方式: 共有787条查询结果,搜索用时 78 毫秒
81.
82.
There is often something wrong with merely promising to try to φ. In this article I explain what is wrong with such promises. I argue that a promise to try to φ, when it is entirely up to us to φ, is always wrong because it hides a possible choice under the veil of our susceptibility to circumstances beyond our control. I furthermore argue that this is often also the case when matters are not entirely up to us. Finally, I contend that sometimes the promise to try places undue burdens on the promisee.  相似文献   
83.
84.
Psychological research on pseudo-profound bullshit—randomly assembled buzz words plugged into a syntactic structure—has only recently begun. Most such research has focused on dispositional traits, such as thinking styles or political orientation. However, none has investigated contextual factors. In two studies, we introduce a new paradigm by investigating the contextual effect on pseudo-profound bullshit and meaningful quotes. In Study 1, all participants rated the profundity of statements in three contexts: (a) isolated, (b) as allegedly said by a famous author, or (c) within a vignette (short story). Study 2 serves as a conceptual replication in which participants rated statements in only one of three contexts. Overall, our results demonstrate that although contextual information such as author's name increases the perceived profundity of bullshit, it has an inconsistent effect on meaningful quotes. The present study helps to better understand the bullshit receptivity while offering a new line of research.  相似文献   
85.
Research has shown different temperamental attributes in infants of various cultural origins. Some authors have suggested that these temperamental attributes might be related to biological and genetic differences. In the present study, mothers' reports of infant temperament, using the Revised Infant Temperament Questionnaire (Carey & McDevitt, 1978), were compared among Québécois, Haitian, and Vietnamese groups living in Montréal. Results indicated patterns of differences across groups that essentially distinguished the Québécois from the other two groups. These two groups reported more difficult temperamental characteristics in their infants. The values and caretaking practices related to the specific cultural contexts, contrasted with the values expressed through a North-American validated questionnaire, may explain the variations in infant temperament reports. Further studies should examine more thoroughly the relation between observed infant behaviours and maternal reports.  相似文献   
86.
We construct a faithful interpretation of ukasiewicz's logic in product logic (both propositional and predicate). Using known facts it follows that the product predicate logic is not recursively axiomatizable.We prove a completeness theorem for product logic extended by a unary connective of Baaz [1]. We show that Gödel's logic is a sublogic of this extended product logic.We also prove NP-completeness of the set of propositional formulas satisfiable in product logic (resp. in Gödel's logic).  相似文献   
87.
88.
Numerous studies have shown that perceived organizational support has positive consequences on both employees and organizations. However, no study has examined the causal relationship between perceived organizational support and proactive behaviour directed towards the organization and few studies have identified potential mechanisms underlying this relationship. We first investigated the direction of causality between perceived organizational support and proactive behaviour, and hypothesized that perceived organizational support leads to proactive behaviour directed towards the organization. Second, based on social exchange and motivational perspectives, we examined two potential mechanisms underlying this relationship, i.e., felt obligation and work engagement. Employees from a Belgian Federal Public Service were invited to take part in a three-wave longitudinal survey. Using a cross-lagged panel design, our results (N = 1963) revealed that Time 2 perceived organizational support was positively related to Time 3 proactive behaviour towards the organization, whereas the reverse was not true. Additionally, our results (N = 1293) showed that Time 2 felt obligation and Time 2 work engagement mediated the positive relationship between Time 1 perceived organizational support and Time 3 proactive behaviour directed towards the organization.  相似文献   
89.
We exploit the cross-country differences in economic freedom to examine the link between the quality of institutions and subjective well-being. Using Veenhoven’s happiness dataset, the evidence suggests countries with better economic institutions and higher level of economic freedom, captured by the security of property rights, open markets and more limited government, are significantly more likely to experience greater subjective well-being after controlling for structural confounders of national subjective well-being such as income, unemployment, inequality, social capital and life satisfaction. The effect of institutions on cross-national happiness is both significant and robust to different model specifications, estimation techniques and possible sources of endogeneity. Furthermore, our panel data analysis reveals that over time higher levels of economic freedom are associated with decreasing subjective well-being after controlling for state dependence and income.  相似文献   
90.
Previous research suggests that early mentoring relationship (MR) closures may have harmful consequences for the health and well‐being of youth participating in community‐based mentoring programs. However, knowledge of the factors that lead some MRs to close early has been slow to emerge. This study examined patterns and correlates of early versus on‐time MR closures among 569 youth participating in Big Brothers Big Sisters community mentoring programs. Thirty‐four percent of youth experienced an early MR closure prior to the end of the program's 12 month period of commitment. The probability of closure was highest at 12 months into the MR. Early closures were positively associated with youth gender (girls), behavioral difficulties, and match determination difficulties. Early and on‐time closures were associated with youth extrinsic motives for joining the program. Early MR closures were negatively associated with youth perceptions of parent emotional support, parent social support, high quality MR, weekly contact in MR, and parent support of the MR. Implications for programming are discussed.  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