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   2106篇
  免费   78篇
  2021年   14篇
  2020年   29篇
  2019年   32篇
  2018年   54篇
  2017年   54篇
  2016年   43篇
  2015年   43篇
  2014年   48篇
  2013年   203篇
  2012年   87篇
  2011年   85篇
  2010年   44篇
  2009年   51篇
  2008年   76篇
  2007年   75篇
  2006年   87篇
  2005年   60篇
  2004年   58篇
  2003年   62篇
  2002年   61篇
  2001年   37篇
  2000年   37篇
  1999年   47篇
  1998年   35篇
  1997年   35篇
  1996年   45篇
  1995年   29篇
  1994年   33篇
  1993年   36篇
  1992年   22篇
  1991年   23篇
  1990年   28篇
  1989年   23篇
  1988年   24篇
  1987年   30篇
  1986年   23篇
  1985年   25篇
  1984年   25篇
  1983年   27篇
  1982年   41篇
  1981年   29篇
  1980年   27篇
  1979年   32篇
  1978年   23篇
  1977年   24篇
  1976年   26篇
  1975年   24篇
  1974年   16篇
  1973年   15篇
  1969年   15篇
排序方式: 共有2184条查询结果,搜索用时 15 毫秒
161.
The research reported in this paper follows the perspective that decision making is a meaningful act that conveys information. Furthermore, the potential meanings associated with decision options may affect the decisions themselves. This idea is examined in the contexts of compensation, donation, and exchange. In general, judgments were relation dependent and meaning dependent. Furthermore, the results show nonmonotonicities and limited substitutability in a pattern that challenges straightforward ways of mapping decisions onto a common currency of utility.  相似文献   
162.
163.
This reading of Romans 1.19–20 suggests that, viewed within the argumentative progression of the letter from 1.18–3.20, these verses are properly understood as a subversion of the premises of natural revelation, rather than an endorsement of them. The traditional account of Paul's argument, in which 1.19–20 announces a theology of natural knowledge of God, is contradicted both by Paul's wider theological commitments and by his attitude to the privileges of Judaism. An alternative construal of the argument considers it as an ad hominem strategy, in which the opening verses serve to recapitulate at the beginning of the argument the presuppositions that Paul seeks ultimately to overthrow.  相似文献   
164.
165.
166.
Intervening on the development of adolescent addiction requires an understanding of the role of precursors. In a community sample of youth with and without early childhood speech/language (S/L) impairments, 12.7% of participants had a substance use disorder (SUD). Among these participants, 42.0% met criteria for more than 1 SUD. Interestingly, rates of SUDs did not differ by S/L status. However, S/L-impaired participants did show greater psychiatric comorbidity and poorer functioning. A total of 80% of S/L participants with SUDs had a concurrent diagnosis of antisocial personality disorder, compared with 43.8% of SUDs controls. In a logistic regression analysis, we found age 5 mother-rated problem behavior scores and an interaction between S/L status and teacher-rated conduct problem scores were predictive of SUDs. High conduct scores were predictive of SUDs development among control participants but not among S/L-impaired participants. First substance use and initial SUDs symptoms suggest that a window of opportunity exists to reach these troubled young people before they spiral into addiction.  相似文献   
167.
168.
This research uses a combination of text mining, co-word analysis, and social network analysis (SNA) to review 132 international sales and sales management (ISSM) articles published between 1980 and 2017. The study provides a unique view of the past and future of ISSM research and provides three principal contributions. First, from a social network–analytic perspective, it offers a unique examination of the ways ISSM research topics are interconnected, as reflected by keyword network structure. Second, by conducting SNA across two periods (1980–1999 and 2000–2017) and examining the changes in network centrality measures, the study offers initial insights into the evolving nature of the ISSM literature. Third, the study reports keyword network disconnections (i.e., structural holes) to propose a fruitful agenda for future ISSM research. Taken together, this research offers a current perspective of the ISSM research domain's evolving nature.  相似文献   
169.
In the workplace, procrastination is typically viewed as a sub-optimal behavior that undermines productivity. As a construct, psychologists typically conceptualize procrastination as a stable and enduring personality trait. It has recently been argued that time perspective is also a personality trait, which has an important influence on procrastination behavior (Ferrari and Díaz-Morales, 2007 Journal of Research in Personality 41:707–714). Time perspective helps to guide not only employees’ judgments and decisions, but also their actions at the individual level. In this study, we examine the extent to which five qualitatively different types of time perspective (defined by Zimbardo and Boyd, 1999 Journal of Personality and Social Psychology 77:1271–1288) predict the tendency to procrastinate in the workplace. Participants were 236 managers and executives sampled from seven major information technology and financial organizations in India. Regression analyses revealed that of the five time dimensions, two were significantly positively related to procrastination, whereas two others showed negative relationships. From a basic science perspective, these findings help to extend our theoretical understanding of both time perspective and procrastination. From an applied standpoint, the results suggest an important individual difference dimension that might be considered during the personnel selection process.  相似文献   
170.
The search for molecules that restrict synaptic plasticity in the brain has focused primarily on sensory systems during early postnatal development, as critical periods for inducing plasticity in sensory regions are easily defined. The recent discovery that Schaffer collateral inputs to hippocampal area CA2 do not readily support canonical activity-dependent long-term potentiation (LTP) serves as a reminder that the capacity for synaptic modification is also regulated anatomically across different brain regions. Hippocampal CA2 shares features with other similarly "LTP-resistant" brain areas in that many of the genes linked to synaptic function and the associated proteins known to restrict synaptic plasticity are expressed there. Add to this a rich complement of receptors and signaling molecules permissive for induction of atypical forms of synaptic potentiation, and area CA2 becomes an ideal model system for studying specific modulators of brain plasticity. Additionally, recent evidence suggests that hippocampal CA2 is instrumental for certain forms of learning, memory, and social behavior, but the links between CA2-enriched molecules and putative CA2-dependent behaviors are only just beginning to be made. In this review, we offer a detailed look at what is currently known about the synaptic plasticity in this important, yet largely overlooked component of the hippocampus and consider how the study of CA2 may provide clues to understanding the molecular signals critical to the modulation of synaptic function in different brain regions and across different stages of development.  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