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   14657篇
  免费   1254篇
  国内免费   761篇
财政金融   535篇
工业经济   596篇
计划管理   2878篇
经济学   1061篇
综合类   1252篇
运输经济   102篇
旅游经济   130篇
贸易经济   951篇
农业经济   844篇
经济概况   897篇
水利工程   7426篇
  2024年   72篇
  2023年   218篇
  2022年   361篇
  2021年   430篇
  2020年   480篇
  2019年   418篇
  2018年   402篇
  2017年   497篇
  2016年   566篇
  2015年   584篇
  2014年   1057篇
  2013年   984篇
  2012年   1218篇
  2011年   1391篇
  2010年   1064篇
  2009年   899篇
  2008年   954篇
  2007年   898篇
  2006年   787篇
  2005年   647篇
  2004年   500篇
  2003年   440篇
  2002年   340篇
  2001年   266篇
  2000年   245篇
  1999年   162篇
  1998年   136篇
  1997年   121篇
  1996年   132篇
  1995年   94篇
  1994年   99篇
  1993年   64篇
  1992年   55篇
  1991年   31篇
  1990年   23篇
  1989年   19篇
  1988年   5篇
  1987年   3篇
  1986年   4篇
  1985年   1篇
  1984年   3篇
  1981年   2篇
排序方式: 共有10000条查询结果,搜索用时 398 毫秒
1.
This article examines non-farm employment in the context of Chinese rural institutional change, based on evidence from discrete-time logistic models for event history analysis using the Life History and Social Change survey. We find the transition to non-farm sector rose rapidly during the Great Leap Forward and market reform, while the Cultural Revolution saw it reach the lowest ebb. While male advantage prevailed exclusively during the Cultural Revolution and early marketization, education possessed a stable positive effect in all historical periods. Although the returns to different kinds of political capital vary along with institutional dynamics, intergenerational reproduction was greatly reduced after the Cultural Revolution.  相似文献   
2.
Former politicians on the board of directors bring to the firm domestic political connections and political knowledge. Previous research has mainly highlighted the role of contacts, without fully recognizing the role of political knowledge accumulated at home. By focusing on the effect of domestic political connections on foreign direct investment, we show that domestic political knowledge also shapes foreign expansion. We argue that contacts provided by former politicians may not be useful for foreign expansion whilst their political knowledge can be of help in countries with discretionary governments and with similar institutional environments to the one of the home country.  相似文献   
3.
Recent researches have shed light on the effect of cognitive ability on economic decision-making. By measuring cognitive ability applying Raven's progressive matrix test, we obtain two significant results that this effect affects decision-making in two types of experimental ultimatum games. First, the higher the cognitive ability, the larger the amount a sender offers when the offer is smaller than or equal to the half split. Second, the higher the responders’ cognitive ability, the smaller the offer they accept, when they accept it or not with the strategy method. This study not only finds new factors that affect decision-making in experimental ultimatum games, but also provides more evidences that cognitive ability influences economic decision-making.  相似文献   
4.
This study aims to examine the motives behind retailers’ post-entry expansion in foreign markets. Through case studies of eleven participating luxury fashion retailers in China, qualitative data was collected from twenty-two executive interviews. Although their initial market entry was driven by both reactive (push) and proactive (pull) factors, the motives behind their post-entry expansion have become predominantly proactive, especially long-term growth strategies, the ambition to extend their brands and retail formats to more cities, and the experiences gained in entry markets. The desire to optimize the retail store portfolio through multiple channel strategies have slowed down the expansions of physical stores.  相似文献   
5.
We analyse the effect of a large scale infrastructure investment, namely the construction of the Oresund bridge, on the local and supra-regional economy. We employ the synthetic control method to construct counterfactual regions that mimic the trajectory of Malmo and Southern Sweden without treatment. Our results point to a positive effect. However, placebo tests in space and time only reveal statistical significance at a larger regional level. The results suggest that spillover effects are eminent.  相似文献   
6.
This paper addresses the expansion of risk practices through a case study of a government led project in Sweden purposed to develop a method to include social events in mandatory risk practices. Social heterogeneity was to be transformed into straightforward causality in order to turn the social into a manageable object. In this regard, the project was quite successful. By inviting social scientists into the process, otherwise often marginalized within risk practice, causality and quantifiable risk factors could be established and the model became a rigorous and legitimate scientific model. Although experts were granted significant autonomy and became experts far beyond their own area of expertise, the success of the model lies rather in allowing experts authority within confined boundaries. Grand narratives and critical perspectives are disregarded as too abstract and if social scientists are to infuse aspects of social critique they must adapt to these circumstances: they must become instrumentalists.  相似文献   
7.
8.
针对传统隐伏型导水地质裂缝勘探方法存在勘测精度较差的问题,提出电磁精细探测法探析隐伏型导水地质裂缝。依照屏蔽系数、实测场强和理论场强数据绘制综合曲线图,通过该图获取隐伏型导水地质裂缝所处位置几何阴影范围,采用层析成像法得到网格化的工作面,获取隐伏型导水地质图像。通过图像直接观测隐伏型导水地质工作面裂缝所处位置,在此基础上,观测四个电磁场分量,采用正交电磁场分量计算介质视电阻率,依据计算视电阻率数值和视电阻率分布状态研究裂缝发育情况和裂缝富水程度。结果表明:采用该方法能较为精准地获取隐伏型导水地质裂缝位置。通过裂缝位置进一步检测出隐伏型导水地质裂缝最大发育高度为63.5 m。当视电阻数值不断增加时,隐伏型导水地质裂缝和裂缝富水性逐渐减小,与实际情况较为相符,说明该种方法探析效果较好。  相似文献   
9.
黄浦江为感潮河流,低潮位重现期的确定对黄浦江航道的设计具有重要意义。为了准确估计黄浦江低潮位的重现期,以黄浦江下游吴淞口站年最低潮位序列为例,在对样本进行三性审查的基础上,分别采用传统的数理统计方法和时变矩方法进行水文频率分析。结果表明:吴淞口站年最低潮位序列在1996年发生了变异;还现修正后的序列服从位置参数线性时变的GEV模型,低潮位存在缓慢的上升趋势;一致性条件下百年一遇低潮位约为0.261 m,在非一致性条件下其重现期增大为150 a。非一致性条件下的重现期增大说明黄浦江现有的航道设计标准偏安全,航道通航保证率提高。  相似文献   
10.
零售业自营与联营之争由来已久,在当前供给侧结构性改革、完善促进消费体制机制以及零售业寻求创新发展的背景下,有必要对这一问题展开进一步的理论探讨。文章结合马克思流通经济理论指出,自营和联营的本质区别在于是商业资本还是产业资本承担商品流通职能,自营和联营并不是非此即彼的互斥关系,但如果零售业完全倚重其中一种模式并在全社会推向极端,则需要反思商业资本和产业资本是否各得其所和高效分工。在中国流通体制变革中,虽然联营模式在特定历史时期帮助众多零售企业渡过生存危机并推进内资零售快速扩张,但发展至今,已呈现零售业普遍联营的情况,使零售业整体面临着制约创新发展的新问题。数字经济为零售业回归自营提供了有利契机,零售企业应充分利用新技术摆脱联营制的路径依赖,依托数字化开展深度自营并全面提升流通效率。  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