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   12385篇
  免费   318篇
  国内免费   2篇
财政金融   2178篇
工业经济   812篇
计划管理   2260篇
经济学   2513篇
综合类   731篇
运输经济   96篇
旅游经济   183篇
贸易经济   1628篇
农业经济   675篇
经济概况   1604篇
邮电经济   25篇
  2023年   79篇
  2022年   98篇
  2021年   194篇
  2020年   281篇
  2019年   234篇
  2018年   213篇
  2017年   308篇
  2016年   234篇
  2015年   236篇
  2014年   341篇
  2013年   1135篇
  2012年   609篇
  2011年   928篇
  2010年   783篇
  2009年   708篇
  2008年   786篇
  2007年   617篇
  2006年   615篇
  2005年   584篇
  2004年   301篇
  2003年   278篇
  2002年   281篇
  2001年   227篇
  2000年   200篇
  1999年   184篇
  1998年   169篇
  1997年   132篇
  1996年   119篇
  1995年   114篇
  1994年   93篇
  1993年   89篇
  1992年   71篇
  1991年   89篇
  1990年   74篇
  1989年   60篇
  1988年   61篇
  1987年   56篇
  1986年   63篇
  1985年   99篇
  1984年   100篇
  1983年   94篇
  1982年   78篇
  1981年   73篇
  1980年   73篇
  1979年   66篇
  1978年   74篇
  1977年   68篇
  1976年   68篇
  1975年   58篇
  1974年   57篇
排序方式: 共有10000条查询结果,搜索用时 530 毫秒
1.
Are farmers better stewards of the land they own than the land they rent from others? We answer this question using a data set that identifies Ontario farmers’ conservation practices on their own land as well as the land they rent. Using a fixed‐effects regression approach, we find that the role of tenure varies for different types of conservation practices. Farmers were found to be just as likely to adopt a machinery‐related practice such as conservation tillage on their rented land as that land which they own. On the other hand, farmers were found to be less likely to adopt site‐specific conservation practices such as planting cover crops on rented land. However, this effect diminishes as the expected length of the rental relationship increases when the landlord has a farming background.  相似文献   
2.
原始性创新是企业获得核心竞争力的关键,但当前对企业如何获得原始性创新的研究严重不足。为此,以我国环渤海经济带179家高技术企业为样本,从组织遗忘和即兴角度研究原始性创新形成问题,并进一步分析环境动态性在组织遗忘和原始性创新间的作用。结果发现:组织遗忘和组织即兴对原始性创新具有积极效应;组织即兴在组织遗忘和原始性创新间发挥着部分中介作用;环境动态性对组织遗忘和原始性创新的关系具有正向调节效应。  相似文献   
3.
We exploit an influential 1991 Delaware court ruling to examine simultaneously two types of conservatism that play important roles in resolving creditor–owner agency conflicts: contracting conservatism and reporting conservatism. The ruling expanded managerial fiduciary duties in favor of creditors for Delaware-incorporated firms in the vicinity of insolvency. In those firms, following the ruling, debt contracts are less likely to include conservative adjustments to accounting numbers used for covenant compliance (i.e., contracting conservatism decreases), while public financial reporting becomes more conservative (i.e., reporting conservatism increases). The decrease in contracting conservatism is concentrated in firms that exhibit a greater increase in reporting conservatism, suggesting that reporting conservatism is more cost-effective in resolving agency conflicts. In addition, the substitution effect is more pronounced in firms facing greater business uncertainty and firms with greater board independence.  相似文献   
4.
5.
We price an American floating strike lookback option under the Black–Scholes model with a hypothetic static hedging portfolio (HSHP) composed of nontradable European options. Our approach is more efficient than the tree methods because recalculating the option prices is much quicker. Applying put–call duality to an HSHP yields a tradable semistatic hedging portfolio (SSHP). Numerical results indicate that an SSHP has better hedging performance than a delta-hedged portfolio. Finally, we investigate the model risk for SSHP under a stochastic volatility assumption and find that the model risk is related to the correlation between asset price and volatility.  相似文献   
6.
China’s reform on central–local fiscal reform has slowed down in recent years. The appointment of a new finance minister experienced in local government affairs is expected to renew the reform affirmed by the Chinese Communist Party (CCP) congress in late 2017. China has unprecedentedly identified a comprehensive list of 81 national basic public services as entitlements. Eighteen of them are subject to national and local standards, and co-financed by central and local governments. A new cost-sharing method for 10 of these services classifies sub-national jurisdictions into five tiers, in which the central government’s share declines from 80% to 10%. These measures, effective in 2019, aim at creating a ‘harmonious and moderately prosperous society’.  相似文献   
7.
The paper presents a new methodology, based on tensor decomposition, to map dynamic trade networks and to assess its strength in forecasting economic fluctuations at different periods of time in Asia. Using the monthly merchandise import and export data across 33 Asian economies, together with the US, EU and UK, we detect the community structure of the evolving network and we identify clusters and central nodes inside each of them. Our findings show that data are well represented by two communities, in which People's Republic of China and Japan play the major role. We then analyze the synchronisation between GDP growth and trade. Furthermore we apply our model to the prediction of economic fluctuations. Our findings show that the model leads to an increase in predictive accuracy, as higher order interactions between countries are taken into account.  相似文献   
8.
Mahoney  James  Acosta  Laura 《Quality and Quantity》2022,56(4):1889-1911
Quality & Quantity - This article discusses a regularity theory of causality (RTC) for the social sciences. With RTC, causality is a relationship between X and Y characterized by three...  相似文献   
9.
刑事涉财产执行程序因采取移送执行模式而被误认为不存在申请执行人,使得刑事涉财产执行程序及其衍生的案外人权益救济程序过分依赖执行法院的职权主义。在刑事附带民事诉讼裁判、追缴或责令退赔违法所得并返还被害人判项、责令被免予刑事处罚的被告人赔偿被害人损失判项的执行程序中,案外人权益救济程序原则上应以被害人为申请执行人,并参照适用民事强制执行程序中的案外人权益救济制度。其他刑事涉财产执行程序应以检察机关为申请执行人。除非出现被执行人逃避执行或者案外人对执行标的提出排除执行请求等特殊情形,作为申请执行人的检察机关通常无须现实参加执行程序。  相似文献   
10.
U.S. multinational corporations increasingly use intra-firm, cross-border research collaboration to disperse R&D across different countries. This paper investigates the implications of such collaboration on the abilities of firms to garner benefits from R&D tax incentives. We find that the association between R&D intensity and tax incentives is three to five times larger when firms have extensive cross-border collaboration connected to a country. We also find that the effect is stronger when local intellectual property protection is weaker and when local innovation resources are higher. Our results suggest that cross-border collaboration helps firms achieve more tax-efficient R&D investments both by reducing the nontax frictions posed by weak intellectual property protection and by increasing the nontax benefits of foreign R&D.  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