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   11288篇
  免费   1423篇
  国内免费   22篇
财政金融   1908篇
工业经济   852篇
计划管理   2261篇
经济学   2386篇
综合类   402篇
运输经济   222篇
旅游经济   354篇
贸易经济   2361篇
农业经济   556篇
经济概况   1420篇
邮电经济   11篇
  2024年   14篇
  2023年   64篇
  2022年   73篇
  2021年   247篇
  2020年   336篇
  2019年   650篇
  2018年   458篇
  2017年   623篇
  2016年   567篇
  2015年   578篇
  2014年   662篇
  2013年   1341篇
  2012年   837篇
  2011年   895篇
  2010年   856篇
  2009年   619篇
  2008年   618篇
  2007年   521篇
  2006年   500篇
  2005年   483篇
  2004年   267篇
  2003年   260篇
  2002年   251篇
  2001年   204篇
  2000年   112篇
  1999年   82篇
  1998年   57篇
  1997年   37篇
  1996年   50篇
  1995年   48篇
  1994年   38篇
  1993年   37篇
  1992年   29篇
  1991年   38篇
  1990年   18篇
  1989年   17篇
  1988年   22篇
  1987年   19篇
  1986年   19篇
  1985年   19篇
  1984年   15篇
  1983年   21篇
  1982年   20篇
  1981年   16篇
  1980年   16篇
  1979年   15篇
  1978年   9篇
  1977年   14篇
  1973年   10篇
  1971年   5篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Abstract:  This study examines the effects of uncertainty on market prices. Specifically, we use the National Basketball Association betting market to examine whether uncertainty resulting from midseason coaching changes affects the ability of bettors to accurately set betting lines. We find that uncertainty amid midseason coaching changes results in less accurate pricing, as evidenced by higher volatility and greater overall inaccuracy in betting lines. We also find that uncertainty regarding the ability of the replacement coach and/or his strategies results in less accurate pricing, again evidenced by higher volatility and greater overall inaccuracy in betting lines.  相似文献   
992.
Abstract. This study used a sample of 1035 Taiwanese firms to examine the impact of dividend protected employee stock options on stock repurchase and cash dividend policies from 2000 to 2005. This study finds a positive relationship between cash dividends and executive options, implying that executives holding stock options might prefer to distribute cash dividends to boost the stock price. This result, unlike in earlier studies, arises from the dividend protected characteristic of Taiwanese employee stock options. Finally, free cash flow, firm profitability, level of debt, investment opportunities and firm size are found to considerably influence payout decisions.  相似文献   
993.
Changes in exporter market shares in the Kuwaiti poultry import market over the period 1971–81 are analysed by three modelling procedures. Two traditional approaches, a first-order constant transition probability Markov model and a set of market share equations, are found to be of only limited use. As an alternative, a multinominal logit model of market share behaviour is estimated. The empirical results indicate that, in addition to relative price changes, domestic policy inducements for Brazilian and European Community exports are important in determining market share changes. A comparison of the explanatory abilities of the models suggests that the multinominal logit model is as least as good as traditional modelling alternatives with respect to econometric criteria. It is concluded that the multinominal logit model offers considerable promise as a tool for market share research.  相似文献   
994.
我国垃圾处理资源化、产业化之构想   总被引:3,自引:0,他引:3  
简述了我国垃圾处理的现状,提出了实现我国垃圾处理资源化和产业化的设想,介绍了垃圾回收利用、堆肥处置、焚烧制能等资源化处理的途经和方法。  相似文献   
995.
The estimation of physical intensity processes in the context of default risk is investigated here. Using data from Moody's Corporate Bond Default Database, a term structure of default probabilities for different rating classes is constructed each year from 1970 to 2001. Two specifications used for modeling the dynamics of the (risk‐neutral) intensity process in the bond‐pricing literature are then examined empirically: the Ornstein–Uhlenbeck and square‐root cases. The results reveal that the Ornstein–Uhlenbeck case is not an adequate modeling alternative with a rejection of this specification in five out of seven credit classes and nonsignificant mean reverting behavior for all credit classes. The square‐root case obtains better results with four credit classes out of seven for which this specification cannot be rejected and significant mean reversion parameters in many cases. © 2008 Wiley Periodicals, Inc. Jrl Fut Mark 29:95–113, 2009  相似文献   
996.
Recent research highlights the role that multinational trading companies may play in impeding price transmission. In markets characterised by imperfect competition, an estimate of the partial elasticity of demand may be of limited practical value if no account is taken of the reaction of competitors. In this paper, we demonstrate the potential for market structure to affect price transmission and trade elasticities, and challenge the presumption that only government intervention can impact upon price transmission, with examples supporting why theory would suggest otherwise.  相似文献   
997.
998.
This paper investigates how particular configurations of institutional conditions cause high rate of long-term unemployment and non-standard employment rate for 18 OECD countries during the period of 2001–2008. The paper aims to investigate how employment protection legislation (EPL), unemployment benefit and statutory minimum wages are associated with long-term unemployment and non-standard employment. Using the fuzzy-set analysis, the paper examines how the combination of policies matters in causing long-term unemployment and/or non-standard employment. The result suggests that a low level of statutory minimum wage can lead to high levels of non-standard employment in combination with either strict EPL for permanent workers or weak EPLs for temporary workers. The long-term unemployment rate is suggested to be high when there is strict EPL for temporary workers in combination with high levels of statutory minimum wage. This paper highlights the importance of examining multiple policies as configuration.  相似文献   
999.
We examine the reasons why one might expect it to be more difficult to offshore professional work than manufacturing work in a globalized world. We then provide data on the variations in a specific case — the offshoring of diagnostic radiology from the USA, UK and Singapore. We show that existing theories on the ‘offshorability’ of jobs have not captured how national institutions and occupational regulations continue to define professional work. We then review the question of supply from India's perspective and report that both macro‐institutional and organizational contexts make it complicated for Indian doctors to supply much of this service.  相似文献   
1000.
A key assumption underlying segmentation studies is that marketing efforts have differential effects on market segments. This question was investigated in the context of a field experiment involving enlistment in the armed forces. Approximately 8000 completed questionnaires administered at various stages in the US Navy enlistment recruiting process were collected at two points in time, corresponding to a pre- and post-experimental intervention. Attitudinal data were analysed to identify meaningful segments. Differential responses of market segments to advertising and recruiter changes were found, providing direction for evaluation of, and changes in, the creative component of advertising.  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