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   12794篇
  免费   195篇
财政金融   2430篇
工业经济   814篇
计划管理   2175篇
经济学   2894篇
综合类   136篇
运输经济   66篇
旅游经济   171篇
贸易经济   2375篇
农业经济   371篇
经济概况   1462篇
信息产业经济   4篇
邮电经济   91篇
  2021年   149篇
  2020年   94篇
  2019年   140篇
  2018年   339篇
  2017年   338篇
  2016年   332篇
  2015年   141篇
  2014年   200篇
  2013年   1154篇
  2012年   563篇
  2011年   518篇
  2010年   282篇
  2009年   324篇
  2008年   319篇
  2007年   271篇
  2006年   316篇
  2005年   1111篇
  2004年   665篇
  2003年   363篇
  2002年   237篇
  2001年   197篇
  2000年   194篇
  1999年   176篇
  1998年   189篇
  1997年   183篇
  1996年   176篇
  1995年   129篇
  1994年   134篇
  1993年   156篇
  1992年   170篇
  1991年   170篇
  1990年   123篇
  1989年   114篇
  1988年   101篇
  1987年   114篇
  1986年   127篇
  1985年   177篇
  1984年   146篇
  1983年   167篇
  1982年   137篇
  1981年   131篇
  1980年   148篇
  1979年   132篇
  1978年   105篇
  1977年   116篇
  1976年   108篇
  1975年   105篇
  1974年   97篇
  1973年   82篇
  1972年   77篇
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
21.
22.
A survey conducted in Mississippi, Texas, Indiana, and Nebraska elicited producers' preferences for various farm policy changes. This permitted examination of the diversity of preferences that single-state studies have not allowed. Five policy choices, including deficiency payments, loan programs, crop insurance, export programs, and disaster payments were examined. Logit model results predicting producer preferences for each of the five dichotomous policy choices are reported. Explanatory variables based on expected utility theory such as risk aversion, price and yield variability, and price–yield correlation are significant in various models.  相似文献   
23.
Accounting Policies in Agencies with Moral Hazard and Renegotiation   总被引:4,自引:1,他引:3  
We emphasize the role of accounting policies, and their audit, in an earnings management setting. We use a two–period agency in which three frictions interact: the agent privately observes action (or effort) supply and output, and the initial contract is subject to renegotiation. This creates a setting in which both players' behavior is of concern, and, importantly, information rationing is efficient. Moreover, this information rationing is directly interpretable as being produced by an accounting policy whose application is ensured by an auditor.  相似文献   
24.
25.
26.
In the presence of foreign factor ownership tariffs change not only the terms of (goods) trade but also income flows between countries. Assume that only the home country owns factors abroad. Then the optimal tariff is negative if and only if foreign factor ownership entails trade-pattern reversals. Trade-pattern reversals are neither a necessary nor a sufficient condition for a negative optimal tariff if the foreign country owns factors in the home country. Changes in the home country's tariff shift the foreign country's offer curve. This adds a new dimension to optimal tariff analysis.  相似文献   
27.
We provide a framework in which we link the valuation and assetallocation policies of defined benefits plans with the lifetimemarginal productivity schedule of the worker and the pensionplan formula. In turn, we examine the retirement policies thatare implied by the primitives of the model and the value ofpension obligations. Our model provides an explicit valuationformula for a stylized defined benefits plan. The optimal assetallocation policies consist of the replicating portfolio independentof the pension liabilities. We show that the worker with retirewhen the ratio of pension benefits to current wages reachesa critical value which depends on the parameters of the pensionplan and the discount rate. Using numerical techniques we analyzethe feedback effect of retirement policies on the valuationof plans and on the asset allocation decisions.  相似文献   
28.
The economics of land transfer and title insurance   总被引:3,自引:0,他引:3  
In the presence of uncertainty over the title of land (due to fraud or error), a legal system can protect either the current (innocent) owner, or a previous owner who claims title. The predominant system in the United States generally awards title to the latter in the event of legitimate claim. Thus, current owners frequently purchase title insurance to provide indemnification in the event of a loss. In contrast, the Torrens system awards title to the current owner, but provides for indemnification of any legitimate claimants. We evaluate these two systems and argue that if transaction costs are low, both promote efficient assignment of title (according to the Coase Theorem), but if transaction costs are high, the Torrens system is more likely to award title to the party that values it the most (namely, the current possessor).  相似文献   
29.
A conceptual framework of anonymity in Group Support Systems   总被引:2,自引:2,他引:0  
As the development and use of automated systems for collaborative work grows, the need for a better understanding of these systems becomes more important. Our focus is on one type of system, a Group Support System (GSS) and, in particular, on one important aspect of a GSS—anonymity. A conceptual framework for the study of anonymity in a GSS is presented, which describes the general classes of variables and their relationships. These variables include the factors that influence anonymity in a GSS, types of anonymity, and the effects of anonymity on a message sender, receiver, group process, and outcome. Each of these variables is discussed with working propositions presented for important group process and outcome measures. The objectives of this article are to highlight the importance and complexity of anonymity, to act as a guide for empirical investigations of anonymity, and to influence future GSS development and use.  相似文献   
30.
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