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   503篇
  免费   8篇
管理学   29篇
劳动科学   1篇
民族学   3篇
人口学   32篇
丛书文集   35篇
理论方法论   44篇
综合类   153篇
社会学   194篇
统计学   20篇
  2024年   1篇
  2023年   6篇
  2022年   1篇
  2021年   4篇
  2020年   11篇
  2019年   21篇
  2018年   20篇
  2017年   17篇
  2016年   18篇
  2015年   12篇
  2014年   21篇
  2013年   64篇
  2012年   14篇
  2011年   22篇
  2010年   24篇
  2009年   13篇
  2008年   22篇
  2007年   26篇
  2006年   22篇
  2005年   18篇
  2004年   19篇
  2003年   17篇
  2002年   14篇
  2001年   7篇
  2000年   7篇
  1999年   8篇
  1998年   8篇
  1997年   7篇
  1996年   7篇
  1995年   5篇
  1994年   10篇
  1993年   11篇
  1992年   8篇
  1991年   10篇
  1990年   3篇
  1989年   2篇
  1988年   1篇
  1987年   8篇
  1978年   1篇
  1977年   1篇
排序方式: 共有511条查询结果,搜索用时 0 毫秒
31.
Perceptions of infectious diseases are important predictors of whether people engage in disease‐specific preventive behaviors. Having accurate beliefs about a given infectious disease has been found to be a necessary condition for engaging in appropriate preventive behaviors during an infectious disease outbreak, while endorsing conspiracy beliefs can inhibit preventive behaviors. Despite their seemingly opposing natures, knowledge and conspiracy beliefs may share some of the same psychological motivations, including a relationship with perceived risk and self‐efficacy (i.e., control). The 2015–2016 Zika epidemic provided an opportunity to explore this. The current research provides some exploratory tests of this topic derived from two studies with similar measures, but different primary outcomes: one study that included knowledge of Zika as a key outcome and one that included conspiracy beliefs about Zika as a key outcome. Both studies involved cross‐sectional data collections that occurred during the same two periods of the Zika outbreak: one data collection prior to the first cases of local Zika transmission in the United States (March–May 2016) and one just after the first cases of local transmission (July–August). Using ordinal logistic and linear regression analyses of data from two time points in both studies, the authors show an increase in relationship strength between greater perceived risk and self‐efficacy with both increased knowledge and increased conspiracy beliefs after local Zika transmission in the United States. Although these results highlight that similar psychological motivations may lead to Zika knowledge and conspiracy beliefs, there was a divergence in demographic association.  相似文献   
32.
33.
The economic recession, the dynamism and complexity of the markets and the generalised globalisation of the world economy have forced many companies to rethink and reorganise their industrial strategies. Through identifying and taking advantage of the key technologies of a company, this work presents a new and original methodology for dealing with a general technological diversification process. The methodology, which includes an innovative cognitive perspective and its corresponding decisional tool (decision support system) has been used to select the best product in a process of technological diversification that, along with the key technologies, identifies the sub-levels consonant to the sub-technologies and applications to sectors and products. The multicriteria selection tool employed in the proposed methodology, based on the analytic hierarchy process, allows the integration of multiple scenarios, actors and criteria, both tangible and intangible. The methodology has been applied to a case study in the Spanish automotive auxiliary sector.  相似文献   
34.
This paper critically reviews recent research exploring risk and protective factors for the development of problematic substance use in populations of young people. Specific populations of young people who are most vulnerable to developing problematic patterns of use are identified, and alterations to methods of data collection which would improve the ability of local authorities to monitor these populations and more efficiently target them for early preventative interventions are highlighted. It is argued that social‐psychological research techniques and approaches should be used to complement a risk and protection‐focused approach in order to improve the design and evaluation of interventions, and provide decision‐aids for practitioners when assessing the needs of vulnerable young people. Examples are provided to demonstrate the utility of social psychology in this regard, and the paper concludes with specific recommendations for future research and services. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
35.
36.
A primary purpose of sex offender community notification statutes is to give community members the opportunity to engage in precautionary behavior to prevent victimization. This exploratory study examines the effect of notification by comparing the behavior of 87 Hamilton County, Ohio, residents receiving sex offender notification to the behavior of 149 other residents who had not received notification. The findings indicate that notified respondents are significantly more likely to engage in behaviors to protect themselves and others from victimization, and to engage in community reporting behavior.  相似文献   
37.
亲贫困增长分析中的Shapley分解规则   总被引:2,自引:0,他引:2       下载免费PDF全文
阮敬  詹婧 《统计研究》2010,27(5):58-66
亲贫困增长主要是指能够使贫困群体参与经济活动并从中得到更多好处的经济增长。本文把影响亲贫困增长的因素分解为经济增长效应、收入分配效应和贫困线变动效应,并纳入一个统一分析框架中,采用合作博弈理论中的Shapley分解规则证明了亲贫困增长分析中因素变动效应的完全分解过程,并用住户调查数据(1988-2007年)对中国农村和城镇的亲贫困增长状况进行了实证,在此基础上作为制定具有瞄准功效的反贫困政策的有力依据。  相似文献   
38.
首次在球坐标系统下研究了电磁导弹有趣的波瓣特性。研究表明:当天线口径、距离一定时,电磁导弹的波瓣随波形参量减小而变窄;当天线口径、波形参量一定时,电磁导弹的波瓣随距离增加而变窄;当波形参量、距离一定时,电磁导弹的波瓣随天线口径增加而变宽;电磁导弹不存在副瓣;电磁导弹的能量在远轴时仍按球面波方式衰减。这些结论有助于理解电磁导弹的实质。  相似文献   
39.
悬置共面波导兼有鳍线和悬置带线的优点。文中用共形变换技术分析悬置共面波导,得到严格的解,考虑有限厚度基片情况下给出了悬置共面波导的有效介电常数,单位长度电容和特性阻抗的闭合表达式。  相似文献   
40.
There are estimated to be 250 000–350 000 children of problem drug users in the UK. The Government's Every Child Matters Programme seeks to ensure that vulnerable children affected by parental drug misuse are enabled to achieve their full potential in life. This article critically reviews recent national and international research examining the impact of parental drug misuse on children; focusing on the extent to which within‐family risk and protective factors are related to parental gender. The article calls for greater research focus on paternal drug‐misusers parenting strategies and makes recommendations.  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