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   4081篇
  免费   154篇
  国内免费   58篇
管理学   411篇
劳动科学   1篇
民族学   33篇
人口学   95篇
丛书文集   409篇
理论方法论   121篇
综合类   2945篇
社会学   218篇
统计学   60篇
  2024年   9篇
  2023年   23篇
  2022年   48篇
  2021年   41篇
  2020年   71篇
  2019年   69篇
  2018年   70篇
  2017年   68篇
  2016年   91篇
  2015年   107篇
  2014年   196篇
  2013年   284篇
  2012年   266篇
  2011年   268篇
  2010年   238篇
  2009年   230篇
  2008年   277篇
  2007年   327篇
  2006年   304篇
  2005年   281篇
  2004年   262篇
  2003年   259篇
  2002年   181篇
  2001年   158篇
  2000年   72篇
  1999年   30篇
  1998年   14篇
  1997年   13篇
  1996年   8篇
  1995年   4篇
  1994年   4篇
  1993年   8篇
  1992年   5篇
  1990年   1篇
  1989年   4篇
  1988年   2篇
排序方式: 共有4293条查询结果,搜索用时 15 毫秒
101.
Demographic research has paid much attention to the impact of childhood conditions on adult mortality. We focus on one of the key aspects of early life conditions, sibling group size, and examine the causal effect of growing up in a large family on mortality. While previous studies have focused on low- or middle-income countries, we examine whether growing up in a large family is a disadvantage in Sweden, a context where most parents have adequate resources, which are complemented by a generous welfare state. We used Swedish register data and frailty models, examining all-cause and cause-specific mortality between the ages of 40 and 74 for the 1938–72 cohorts, and also a quasi-experimental approach that exploited multiple births as a source of exogenous variation in the number of siblings. Overall our results do not indicate that growing up in a large family has a detrimental effect on longevity in Sweden.  相似文献   
102.
本文运用归因理论,从培养学生英语学习的心理素质出发,激发其英语学习的动机,提高英语学习的积极性。  相似文献   
103.
Drawing on historical methods, this study assesses the conventional “cyber-sovereignty” framework, which has been used to capture and interpret China’s stance toward global Internet governance. This framework focuses on political control and tends to reduce China’s policies to the attempts by an authoritarian state to elevate governments and intergovernmental organizations to be the only legitimate governors of global cyberspace. As it traces the evolution of China’s relationship with the global Internet in the past three decades, the study demonstrates that China’s stance is more complex than the prevalent framework allows and that it is both built upon and different from the US-centric, market-oriented Internet governance scheme. This study recognizes the inadequacy of the conventional framework and invokes a theory of critical political economy of communication, thereby offering an alternative model to explicate the complex power dynamics behind China’s changing strategies. The alternative model advanced in this study is based on the understanding of China’s evolving approach as the product of multifaceted interactions among a group of power-holders that include both state agencies and business units on the transnational level.  相似文献   
104.
当今人才作为第一资源是各国家与地区之间争夺的对象,如何引进、使用和留住人才对国家和地区的经济发展具有重要意义。深圳市是全国改革开放的先锋军,在海外高层次人才引进方面走在全国前列。对深圳市海外高层次人才引进特色和优势分析,可为三亚市海外高层次人才的引进提供借鉴和启示意义,以促进三亚市发挥自身优势,吸引优势人才资源,为建设海南省国际旅游岛做出一份贡献。  相似文献   
105.
ABSTRACT

At the 2017 North Carolina Serials Conference, keynote speaker Regina Romano Reynolds—Director, U.S. ISSN Center and Head, ISSN Section at the Library of Congress—explored how bibliographic transformation can connect users to good-quality content. Offering examples of current and potential serials management projects, Reynolds shared her vision for breaking down information silos, experimenting in the resource management space, and the need for visionary leadership.  相似文献   
106.
采取活动重叠模式通常是加速研发的有效手段,带有活动重叠的资源受限项目调度问题是经典资源受限项目调度问题的扩展.首先,深入分析了活动重叠对于项目调度的影响,对活动重叠及其不确定进行详细描述与建模,提出了活动重叠导致下游活动返工时间的二项分布概率模型;其次,构建了以最小化研发项目期望工期为目标的优化调度模型,设计了基于串行进度生成机制的遗传算法对大规模问题进行优化求解;最后,基于PSPLIB J60问题库中480个算例分析了该算法的计算结果,并考察了网络参数、资源参数和重叠参数变化时,采用活动重叠模式对缩短项目工期的影响.研究结果表明:活动对资源的需求强度越小或资源稀缺程度越低,可重叠活动对数量就会增加,项目工期缩短得越明显;网络复杂度的变化对缩短项目工期的影响不大;项目中重叠活动对越多,重叠导致的下游活动返工的概率越小,项目工期缩短的越明显.  相似文献   
107.
为培养高职数控技术专业学生的数控加工与编程能力,通过调研典型制造型企业,以其岗位能力需求为基础,以企业的实践过程为任务流程,规划了数控加工与编程课程的教学体系,并构建了基于网络化教学平台的数字化教学资源库。  相似文献   
108.
张建宁 《职业时空》2012,(4):50-51,54
从培养目标、培养内容、培养方式、技能考核等方面出发,着重探讨了基于校企合作的能力培养模式,提出了人力资源管理专业结构化职业技能培养的整体方案。  相似文献   
109.
In this study, information on small to modest lottery wins from the British Household Panel Survey (N = 2,563) was used to investigate the effect of income on separation. The analysis demonstrated that money matters within relationships. Lottery wins temporarily reduced the odds of separation after men won. Men spent more on leisure and became more satisfied with their leisure time and social lives after winning. Nevertheless, most of the effect of lottery wins on union stability was not mediated by changes in satisfaction; instead, a direct effect of wins on the threshold to leave relationships was observed. No effect on union stability was found when women won. Women did not spend their winnings on leisure time but instead saved or spent money on durable items. These types of spending did not increase satisfaction. The findings suggested that, within families, men acted relatively independently, whereas the behavior of women was more family oriented.  相似文献   
110.
"资源稀释模型"认为,在家庭经济资源一定的情况下,家庭里的孩子数量越多,每个孩子分到的经济资源就会相应减少;而且家庭的经济资源对孩子是否有机会接受高等教育的影响非常重要。笔者从"资源稀释模型(Resource Dilution Model)"这一视角来分析和探讨,上世纪末我国"高等教育规模扩张"政策何以得以顺利实施。  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