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   14806篇
  免费   621篇
  国内免费   18篇
财政金融   3918篇
工业经济   631篇
计划管理   3167篇
经济学   1943篇
综合类   1618篇
运输经济   98篇
旅游经济   139篇
贸易经济   1633篇
农业经济   1015篇
经济概况   1283篇
  2025年   56篇
  2024年   242篇
  2023年   341篇
  2022年   298篇
  2021年   486篇
  2020年   651篇
  2019年   493篇
  2018年   417篇
  2017年   532篇
  2016年   521篇
  2015年   539篇
  2014年   964篇
  2013年   1413篇
  2012年   990篇
  2011年   1177篇
  2010年   908篇
  2009年   803篇
  2008年   899篇
  2007年   817篇
  2006年   849篇
  2005年   595篇
  2004年   410篇
  2003年   299篇
  2002年   198篇
  2001年   148篇
  2000年   110篇
  1999年   80篇
  1998年   57篇
  1997年   37篇
  1996年   27篇
  1995年   24篇
  1994年   22篇
  1993年   11篇
  1992年   12篇
  1991年   13篇
  1990年   1篇
  1988年   1篇
  1986年   1篇
  1985年   1篇
  1983年   1篇
  1981年   1篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
Do changes in the population covered by health insurance affect liability insurers, who compensate billions of dollars in medical claims each year? We examine this question by exploiting the selective rollout across states of Medicaid expansions under the Affordable Care Act. Using data on insurer losses across a range of insurance lines, and employing a triple‐difference research design that contrasts states, years, and lines of insurance, we demonstrate that coverage expansions reduce auto liability and workers’ compensation outlays by 6–11 percent, but do not measurably impact other lines of insurance. Our analysis provides some of the first evidence regarding the use of the tort system particularized to the low‐income population and is the first to consider the impacts of health insurance on medical professional liability and commercial auto insurance claims.  相似文献   
42.
    
Since the Global Financial Crisis, credit risk and its management have become one of the most appealing topics in finance literature. In this study, we investigate the interaction of credit risk and liquidity risk through the TED and the OIS spreads and various credit default swap indexes from the CDX and the iTraxx family (CDXIG, CDXHY, ITEEU, and ITEXO). The empirical analysis is conducted through the Kapetanios unit root test, the EGARCH model, the Bootstrap Toda-Yamamoto modified Wald test and the asymmetric causality analysis. The results of symmetric and asymmetric causality methods reveal that liquidity risk appears to play an important role in credit risk, and in most cases, the TED and the OIS spreads dominate the CDS indexes. It can, thus, be concluded that the TED and the OIS spreads are superior to the CDS indexes as an early warning indicator in the credit market.  相似文献   
43.
    
A structural model of pricing Write-Down (hereafter WD) bonds under imperfect information has been developed to investigate the effect of WD bonds issuance on credit risk. Information is not only delayed but also asymmetrically distributed between managers and outside investors. We derive analytical solutions for corporate securities prices and find the issuance of WD bonds could significantly improve firm value via reducing bankruptcy cost. Our numerical results further demonstrate that the WD bonds issuance increases corporate risk tolerance and reduces the risk of bankruptcy and credit spreads under imperfect information.  相似文献   
44.
H. Toutenburg  Shalabh 《Metrika》2002,54(3):247-259
This article considers a linear regression model with some missing observations on the response variable and presents two estimators of regression coefficients employing the approach of minimum risk estimation. Small disturbance asymptotic properties of these estimators along with the traditional unbiased estimator are analyzed and conditions, that are easy to check in practice, for the superiority of one estimator over the other are derived. Received May 2001  相似文献   
45.
    
Jian Chen  Chenghu Ma 《Applied economics》2016,48(35):3277-3292
This article proposes a novel way of pricing S&P 500 index options in the presence of jump risk. Our analysis is built upon an equilibrium option pricing rule for a representative agent economy. In particular, we use the weighted utility’s certainty equivalent to specify agent’s risk preference, which displays a fanning-out characteristic. We find that the fanning effect captures a remarkably large portion of the total market risk premium implicit in options. As a result, the model with fanning effect generates pronounced volatility smirks.  相似文献   
46.
    
Using a proprietary account‐level database from a commercial bank in China, we document that credit card holders can ease their credit constraints through the practice of cash‐out based on bogus transactions using credit cards. We find that such behaviour might be beneficial to both cardholders and banks. First, we find that a 1% increase in the cumulative number of credit card cash‐out transactions lowers the probability of default by 9.59%. Second, for private businesses, a 1% increase in the number of abnormal cash‐out transactions lowers overdue risk by 13.45%. Third, by lowering the overdue risk, the card‐issuing bank earns a larger profit. Our results are consistent with the notion that unconventional credit card cash‐out can mitigate the extent of capital misallocation in emerging markets.  相似文献   
47.
This article finds evidence of significant reversals in returns over the medium term in Greek stocks. In contrast with previous research, return reversals are more pronounced for past winners, suggesting that the market overreacts to a greater extent to good news. These contrarian returns are particularly elevated when portfolios are formed using quartiles and during tranquil and bull markets. The optimum contrarian strategy involves skipping the first 6 months of the holding period and implementing the contrarian strategy for a period of 18 months, as returns exhibit continuation followed by reversal. The profitability of the contrarian investment strategy is robust to adjustments for risk and seasonalities. It is the tranquil times and not the crisis/volatile times that generates a significant and profitable contrarian strategy. The recent credit crisis and resulting stock market falls, resulted in extreme movements in some Greek stocks and testing of the contrarian strategy problematic, especially when portfolios are decile ordered. Our findings also highlight the importance of survivorship bias and also suggest that contrarian strategies that just use market beta may be ill-equipped to take into consider extreme market movements, illiquidity and short-sales constraints.  相似文献   
48.
刘振奎 《价值工程》2008,27(2):134-136
业主作为工程建设项目的投资者和使用者,准确识别和正确评估工程项目中的风险具有重要意义。利用层次分析法(AHP)和ABC分类法,对业主风险进行评估和排序,使业主在防范风险时做到主次分明,心中有数。  相似文献   
49.
杨娜 《价值工程》2015,(19):232-233
针对生鲜冷链物流中的产品质量风险问题,建立基于工作流技术和文献研究法的产品质量风险预警体系和基于Logistic回归的质量风险预警推理模型,按风险的来源和级别实现不同的质量风险控制,以最终实现生鲜产品的质量目标。  相似文献   
50.
本次震撼全球的美国金融危机给世人敲响了金融危机不定时爆发的警钟。全球化背景下金融危机的传染性更强、金融风险更大。中国相对脆弱的金融体系需要探索如何防范金融系统性风险,如何健全金融监管体系的制度与法制建设。随着人民币国际化过程深入,制定并颁布《金融危机法》能克服目前金融监管纵向监管体系缺陷,对提高我国金融监管机构应对金融危机能力、稳定金融市场与保增长具有重要意义。  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