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   4341篇
  免费   97篇
财政金融   523篇
工业经济   307篇
计划管理   934篇
经济学   887篇
综合类   339篇
运输经济   20篇
旅游经济   29篇
贸易经济   443篇
农业经济   293篇
经济概况   639篇
信息产业经济   7篇
邮电经济   17篇
  2024年   10篇
  2023年   42篇
  2022年   72篇
  2021年   113篇
  2020年   129篇
  2019年   95篇
  2018年   71篇
  2017年   120篇
  2016年   101篇
  2015年   107篇
  2014年   119篇
  2013年   242篇
  2012年   320篇
  2011年   552篇
  2010年   465篇
  2009年   277篇
  2008年   288篇
  2007年   276篇
  2006年   321篇
  2005年   292篇
  2004年   73篇
  2003年   64篇
  2002年   60篇
  2001年   63篇
  2000年   30篇
  1999年   28篇
  1998年   21篇
  1997年   10篇
  1996年   14篇
  1995年   6篇
  1994年   5篇
  1993年   9篇
  1992年   9篇
  1991年   4篇
  1990年   5篇
  1989年   5篇
  1988年   8篇
  1986年   4篇
  1985年   2篇
  1984年   4篇
  1979年   1篇
  1854年   1篇
排序方式: 共有4438条查询结果,搜索用时 153 毫秒
991.
The expansion of the Internet in developing countries has important implications for the economic development of rural areas. Although many studies have investigated various benefits of Internet use, little attention has been paid to find the relationship between Internet use and the economic well‐being of rural households. This paper, therefore, investigates the effects of Internet use on household income and expenditure, using a sample of rural households from China. Both endogenous treatment regression (ETR) and unconditional quantile regression (UQR) techniques are used to identify the homogenous and heterogeneous effects of Internet use, respectively. The ETR results show that Internet use increases household income and expenditure significantly. However, the UQR results reveal that Internet use has a larger impact at the upper distributions of household income and expenditure.  相似文献   
992.
The phenomenon of adverse selection caused by asymmetric information dominates the insurance market. In this paper, based on principal-agent theory, we establish a two-period dynamic insurance contract model with a low compensation period. This model introduces the tools of a low compensation period and the increase and decrease in the bonus to identify the risk types of policyholders. We prove that this model can achieve a strict Pareto improvement relative to the two-period static insurance contract model with a low compensation period. Moreover, we also graphically analyze the conclusion, which can help insurance companies to design more comprehensive insurance contracts.  相似文献   
993.
Theory suggests that balance sheet information such as total assets, total equity, or total liabilities complements earnings information in helping investors assess a firm’s profitability and estimate earnings growth. The voluntary disclosure of balance sheet information at earnings announcement could help investors gather and process this information at a lower cost. We therefore predict that voluntary balance sheet disclosure at the time of an earnings announcement helps investors promptly understand the implication of current earnings news for future earnings and subsequently reduces post-earnings-announcement drift (PEAD). Consistent with these predictions, our results show that when firms provide voluntary balance sheet disclosures, the earnings response coefficient in the event window is significantly higher and the corresponding PEAD is significantly lower. We further find that the impact of voluntary balance sheet disclosure on PEAD is more pronounced when the magnitude of balance sheet value surprise is larger, when balance sheet value is more informative about future earnings, when earnings uncertainty is higher, or when information cost is higher, consistent with our conjectures that helping investors to better understand future earnings performance and lowering information costs are key mechanisms underlying the effect of voluntary balance sheet disclosure on PEAD.  相似文献   
994.
This paper links the sharp drop in China's manufacturing servitisation (MS) in early 21st century to China's accession to WTO featured by conspicuous input trade liberalisation (ITL). The results show that manufacturing industries exposed to higher degree of ITL suffer more MS declines after China's accession to the WTO. Heterogeneous analysis shows that industries with high import intensity, capital intensity or technology intensity suffer more MS declines following input trade liberalisation. Further analysis shows that input trade liberalisation increases the import of intermediate inputs while significantly reduces the proportion of service imports for manufacturing industries. The results are robust to a series of robustness checks.  相似文献   
995.
Since the late 1990s, a performance fee arrangement has been approved as a managerial incentive in direction contribution (DC) pension plan management to motivate managers. However, the fact that managers may take undue risk for the larger performance fees and thus reduce members’ utility has been a subject of debate. As such, this study investigates the optimal risk-taking policies of DC pension fund managers under both the single management fee scheme and a mixed scheme with a lower management fee, as well as an additional performance fee. The analytical solutions are derived by using the duality method and concavification techniques in a singular optimization problem. The results show the complex risk-taking structures of fund managers and recognize the win-win situation of implementing performance-based incentives in DC pension plan management. Under the setting of geometric Brownian motion asset price dynamics and constant relative risk aversion utility, the optimal risk investment proportion shows a peak-valley pattern under the mixed scheme. Further, the manager gambles for gain when fund wealth is low and time to maturity is short. As opposed to the existing literature, this study found that the risk-taking policy is more conservative when fund wealth is relatively large. Furthermore, the utilities of the manager and members could both be improved by appropriately choosing the performance fee rate.  相似文献   
996.
997.
Quality & Quantity - The study based on an online survey covering 655 researchers from hard and soft sciences addresses the influence of different conditions on academic publishing. Results...  相似文献   
998.
999.
孙静  马江 《价值工程》2011,30(16):98-98
针对土层严重液化、普遍涌水的特殊软土路基条件,通过CFG桩实践失败经验,总结预应力混凝土管桩的施工方法和优越性。  相似文献   
1000.
通过ASTM D 4006和ГОСТ2477标准和实验对比,验证了同一原油样本进行含水检测时,ГОСТ2477的检测结果小于ASTM D 4006的检测结果。  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