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   7946篇
  免费   1568篇
  国内免费   4篇
  2022年   33篇
  2021年   113篇
  2020年   146篇
  2019年   460篇
  2018年   388篇
  2017年   493篇
  2016年   506篇
  2015年   415篇
  2014年   397篇
  2013年   953篇
  2012年   447篇
  2011年   408篇
  2010年   371篇
  2009年   344篇
  2008年   392篇
  2007年   315篇
  2006年   302篇
  2005年   281篇
  2004年   240篇
  2003年   262篇
  2002年   252篇
  2001年   175篇
  2000年   160篇
  1999年   98篇
  1998年   90篇
  1997年   66篇
  1996年   67篇
  1995年   53篇
  1994年   47篇
  1993年   31篇
  1992年   56篇
  1991年   78篇
  1990年   53篇
  1989年   57篇
  1988年   58篇
  1987年   53篇
  1986年   45篇
  1985年   54篇
  1984年   53篇
  1983年   35篇
  1982年   51篇
  1981年   50篇
  1980年   34篇
  1979年   46篇
  1978年   42篇
  1977年   42篇
  1976年   50篇
  1975年   37篇
  1974年   38篇
  1973年   40篇
排序方式: 共有9518条查询结果,搜索用时 15 毫秒
211.
212.
213.
214.
215.
216.
This paper proposes an approach for strategic revenue management under uncertainty for real estate projects. It integrates three modelling techniques: first, artificial neural network integrated support vector machines for forecasting the profit and loss‐making real estate residential projects; second, analytical network process approach using decision making trials and evaluation laboratory methodology for establishing interrelationships among factors; and third, multiobjective genetic algorithm approach for obtaining optimal numbers and types of apartments in a real estate project. We compare the respective revenues generated with the new number of apartments and price from the suggested revenue maximization model and that of the old practiced one through a case study of India. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
217.
The American Journal of Psychoanalysis - The present paper begins with the particulars of clinical practice in Ireland. Through clinical example, it examines the emotion of shame, widely paired...  相似文献   
218.
The detrimental effects of insufficient sleep on emotional functioning have been well established. Total sleep deprivation usually leads to increased anxiety and depressive symptoms the following day. However, no study has yet examined the relationships between unmanipulated partial sleep deprivation and next-day symptoms of anxiety and depression in everyday life, which this study sought to characterize. Participants (N = 94) completed daily diary surveys twice per day for 2 weeks without instructions to alter their sleep in any way. Nights of spontaneous, naturally occurring partial sleep deprivation were followed by increased levels of self-reported symptoms of anxious arousal the next day, but were unrelated to next-day symptoms of anhedonic depression or general distress. The relationship between partial sleep deprivation and next-day anxious arousal was found to be moderated by both baseline depressive symptoms and anxiety such that individuals reporting higher levels of depression or anxiety at baseline showed relatively greater increases in symptoms of anxiety following partial sleep deprivation. These results suggest that partial sleep deprivation occurring in everyday life can lead to higher next-day levels of anxious arousal, a relationship that is particularly deleterious for individuals with higher overall levels of anxiety or depressive symptoms.  相似文献   
219.
The sociological literature has produced a remarkably consistent picture of the quantitative patterns of religious disaffiliations in Western countries. This article argues, and demonstrates, that strong changes in a social context may lead individuals to disaffiliate rapidly, leading to very different aggregate effects from those in the “western model.” We use the unique situation of the separation of Germany from 1949 to 1989 and its subsequent reunification as a “natural experiment” to show just how much the relationships routinely found can be disrupted under changed conditions. The state socialist “treatment” affected religious disaffiliations in East Germany profoundly as it (a) made disaffiliations 10 times more probable in the East than in the West in the 1950s and 1960s, (b) shielded East German church members from factors that led to mass disaffiliations in the West in the late 1960s and early 1970s, (c) reversed the education‐disaffiliation link in the East, thus making disaffiliation more likely among the less educated, and (d) led to an especially strong increase in disaffiliations in the East right after the reunification  相似文献   
220.
Research on Child and Adolescent Psychopathology - A correction to this paper has been published: https://doi.org/10.1007/s10802-021-00827-8  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