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   4392篇
  免费   35篇
  国内免费   3篇
财政金融   652篇
工业经济   236篇
计划管理   776篇
经济学   1063篇
综合类   107篇
运输经济   18篇
旅游经济   15篇
贸易经济   1054篇
农业经济   69篇
经济概况   385篇
信息产业经济   6篇
邮电经济   49篇
  2024年   3篇
  2023年   11篇
  2022年   17篇
  2021年   105篇
  2020年   32篇
  2019年   35篇
  2018年   201篇
  2017年   200篇
  2016年   197篇
  2015年   51篇
  2014年   63篇
  2013年   138篇
  2012年   390篇
  2011年   342篇
  2010年   137篇
  2009年   109篇
  2008年   157篇
  2007年   132篇
  2006年   170篇
  2005年   1002篇
  2004年   483篇
  2003年   184篇
  2002年   48篇
  2001年   45篇
  2000年   34篇
  1999年   19篇
  1998年   14篇
  1997年   12篇
  1996年   5篇
  1995年   3篇
  1994年   4篇
  1993年   6篇
  1992年   11篇
  1991年   9篇
  1990年   9篇
  1989年   2篇
  1988年   4篇
  1985年   5篇
  1984年   6篇
  1983年   2篇
  1982年   4篇
  1981年   3篇
  1980年   4篇
  1977年   2篇
  1976年   2篇
  1973年   2篇
  1965年   2篇
  1963年   3篇
  1962年   2篇
  1961年   2篇
排序方式: 共有4430条查询结果,搜索用时 31 毫秒
1.
There is ample evidence that distance has a strong negative effect on migration. Despite its significance in migration decisions, scholars rarely explore the migration distance effect deeper than the first level of interpretation derived from the simple neoclassical theory of migration. This study revisits the migration distance effect in the spirit of Knightian distinction between risk and uncertainty. To this end, this study attempts to construct estimates of the risk premium migrants are willing to pay to avoid the risk associated with migration distance. The results show that the magnitude of the distance effect is not rationalized by risk aversion in the Arrow–Pratt sense (Arrow, 1965, The theory of risk aversion, Yrjo Jahnssonin Saatio, Helsinki, Finland, 90; Pratt, 1964, Econometrica, 32, 122). In particular, the risk premium demanded by distant rural residents is unjustifiably higher compared with that of those living closer to urban areas in their migration decisions. The results suggest that the migration distance effect is analogous to the equity home bias puzzle and the Ellsberg paradox in that the assumption of subjective expected utility can lead to seemingly irrational human behaviors. Some of the findings in this study shed light on the role of subjective aspects such as perception, confidence, and pessimism in migration decisions, which have been neglected in the literature.  相似文献   
2.
3.
This paper examines the welfare implications of alternative inflation targeting proposals for the monetary policy of the European Central Bank. We assume that policy makers have to “learn” the laws of motion of inflation in an economy characterized by “stickiness” in domestic price setting behavior and subjected to recurring shocks to productivity, exports and foreign price. We find that a switch from an “asymmetric” inflation targeting strategy to an “symmetric” makes little difference in welfare payoffs, but it comes at a cost of much higher interest-rate variability. We also find that there are practically no welfare gains from switching from an inflation-targeting strategy based on the Harmonized Index of Consumer Prices (HICP) to a strategy based on the domestic price component of the HICP.  相似文献   
4.
本文论述了生态经济系统非平衡稳定态的概念、特性及其实现的途径。指出生态经济系统稳态,是非平衡的,对外全面开放、激烈竞争、充分利用涨落作用,对内协同、有序、自组织、自适应、自催化、且有非线性作用和支配性、良性运转、进展演替的耗散结构状态。生态经济系统平衡的提法应被生态经济系统稳态的概念所取代。  相似文献   
5.
This paper examined the relevance of 14 demographic, cognitive, and affective factors in individuals' intentions to voluntarily retire early and to secure bridge employment after retirement. Results based on a sample of 361 respondents aged between 40 and 59 suggested that marital status, perceived negative age-health relationship, gender psychological readiness for retirement, and family orientation were related to early retirement intentions. Work centrality, perceived organisational attitude towards older employees, and psychological readiness for early retirement were related to bridge employment intentions. Implications for research were discussed.  相似文献   
6.
7.
关荣  黄敏 《邮政研究》2006,22(2):26-27
文章回顾了我国集邮业务的历史演变和发展状况,分析了集邮业务的业务结构变化及其所带来的经营方式和经营策略的变化,提出个性化服务是集邮业务的发展方向,论述了个性化服务的社会需求、市场前景和发展空间,探讨了个性化服务的发展措施及经营思路。  相似文献   
8.
This paper investigates how a development moratorium affects choices of development timing and land values in a framework where both the value of developed property evolves stochastically and the development costs are fully irreversible. We assume that a regulator initially announces that land is not allowed to be developed during a finite period of time in the future. A developer, thus, must decide whether to develop land before the timing ordinance is imposed, or after it expires. The development moratorium reduces the developer’s option value from waiting and, thus, accelerates development. We also use simulation analysis to demonstrate how the other factors that relate to the demand and supply conditions of the real estate market affect this accelerating effect.  相似文献   
9.
10.
Previously, few, if any, comparative tests of performance of Jackwerth's ( 1997 ) generalized binomial tree (GBT) and Derman and Kani ( 1994 ) implied volatility tree (IVT) models were done. In this paper, we propose five different weight functions in GBT and test them empirically compared to both the Black‐Scholes model and IVT. We use the daily settlement prices of FTSE‐100 index options from January to November 1999. With both American and European options traded on the FTSE‐100 index, we construct both GBT and IVT from European options and examine their performance in both the hedging of European option and the pricing of its American counterpart. IVT is found to produce least hedging errors and best results for American call options with earlier maturity than the maturity span of the implied trees. GBT appears to produce better results for American ATM put pricing for any maturity, and better in‐sample fit for options with maturity equal to the maturity span of the implied trees. Deltas calculated from IVT are consistently lower (higher) than Black‐Scholes deltas for both European and American calls (puts) in absolute term. The reverse holds true for GBT deltas. These empirical findings about the relative performance of GBT, IVT, and Standard Black‐Scholes models are important to practitioners as they indicate that different methods should be used for different applications, and some cautions should be exercised. © 2002 Wiley Periodicals, Inc. Jrl Fut Mark 22:601–626, 2002  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