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   67479篇
  免费   2762篇
  国内免费   20篇
  2020年   629篇
  2019年   800篇
  2018年   1084篇
  2017年   1133篇
  2016年   1170篇
  2015年   874篇
  2014年   1040篇
  2013年   4832篇
  2012年   1984篇
  2011年   2011篇
  2010年   1234篇
  2009年   1199篇
  2008年   1779篇
  2007年   1753篇
  2006年   1588篇
  2005年   1477篇
  2004年   1414篇
  2003年   1289篇
  2002年   1311篇
  2001年   2078篇
  2000年   1947篇
  1999年   1487篇
  1998年   735篇
  1996年   615篇
  1992年   1321篇
  1991年   1240篇
  1990年   1222篇
  1989年   1152篇
  1988年   1149篇
  1987年   1106篇
  1986年   1136篇
  1985年   1240篇
  1984年   959篇
  1983年   904篇
  1982年   688篇
  1981年   659篇
  1979年   1119篇
  1978年   757篇
  1977年   689篇
  1976年   722篇
  1975年   940篇
  1974年   1075篇
  1973年   1132篇
  1972年   959篇
  1971年   880篇
  1970年   879篇
  1969年   894篇
  1968年   1148篇
  1967年   1019篇
  1966年   941篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
We carried out a randomized controlled trial to determine whether an intensive intervention after a suicide attempt could decrease by half the risk of a repeat attempt in the following two years. After initial assessment and randomization, experimental subjects attended 18 therapy appointments over one year, including one home visit, and measures to improve attendance. Control subjects received the usual care. Of 63 experimental subjects, 35% made a repeat attempt, and so did 30% of 63 control subjects. The study had a 99% power to detect the desired decrease of risk (30% to 15%). Clearly, the intervention did not achieve its objective.  相似文献   
132.
Developing readers often make anagrammatical errors (e.g. misreading pirates as parties), suggesting they use letter position flexibly during word recognition. However, while it is widely assumed that the occurrence of these errors decreases with increases in reading skill, empirical evidence to support this distinction is lacking. Accordingly, we compared the performance of developing child readers (aged 8–10 years) against the end‐state performance of skilled adult readers in a timed naming task, employing anagrams used previously in this area of research. Moreover, to explore the use of letter position by developing readers and skilled adult readers more fully, we used anagrams which, to form another word, required letter transpositions over only interior letter positions, or both interior and exterior letter positions. The patterns of effects across these two anagram types for the two groups of readers were very similar. In particular, both groups showed similarly slowed response times (and developing readers increased errors) for anagrams requiring only interior letter transpositions but not for anagrams that required exterior letter transpositions. This similarity in the naming performance of developing readers and skilled adult readers suggests that the end‐state skilled use of letter position is established earlier during reading development than is widely assumed.  相似文献   
133.
Abstract

This study builds on and extends previous sales leadership research by exploring sales professionals’ perceptions of effective leadership behaviors. Semistructured interviews with both sales leaders and salespeople working in a global enterprise software company were examined through a qualitative analysis. Results indicated that participants believed sales leadership played an important role in influencing sales performance. When asked to describe specific sales leader behaviors that best enable salesperson performance, sales professionals – both sales leaders and salespeople – overwhelmingly referenced coaching, followed by collaborating, championing, and customer engaging. We define and describe these four key sales leader behaviors and identify four potential mediating variables (trust, confidence, optimism, and resilience), from which emerges a conceptual framework of sales leader behaviors perceived to enable salesperson performance. We examine these four key sales leader behaviors and mediators in the broader context of leadership theory, particularly transformational, servant, authentic, and adaptive leadership theories. The key contribution of this study is the identification of a set of leader behaviors that are likely to be especially effective in modern sales organizations given that they originated from the perceptions of sales professionals themselves.  相似文献   
134.
135.
136.
137.
138.
139.
140.
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