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   15277篇
  免费   390篇
财政金融   2938篇
工业经济   1299篇
计划管理   2565篇
经济学   3242篇
综合类   159篇
运输经济   120篇
旅游经济   270篇
贸易经济   2280篇
农业经济   712篇
经济概况   2078篇
信息产业经济   1篇
邮电经济   3篇
  2021年   103篇
  2020年   170篇
  2019年   222篇
  2018年   325篇
  2017年   309篇
  2016年   289篇
  2015年   201篇
  2014年   334篇
  2013年   1606篇
  2012年   451篇
  2011年   456篇
  2010年   439篇
  2009年   511篇
  2008年   439篇
  2007年   372篇
  2006年   350篇
  2005年   287篇
  2004年   303篇
  2003年   302篇
  2002年   288篇
  2001年   291篇
  2000年   328篇
  1999年   287篇
  1998年   265篇
  1997年   276篇
  1996年   255篇
  1995年   234篇
  1994年   230篇
  1993年   270篇
  1992年   245篇
  1991年   251篇
  1990年   237篇
  1989年   220篇
  1988年   208篇
  1987年   187篇
  1986年   216篇
  1985年   293篇
  1984年   269篇
  1983年   270篇
  1982年   226篇
  1981年   222篇
  1980年   241篇
  1979年   201篇
  1978年   173篇
  1977年   165篇
  1976年   144篇
  1975年   131篇
  1974年   111篇
  1973年   111篇
  1972年   84篇
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
191.
This paper presents a dynamic model that determines the optimal number of deer hunting permit sales, subject to the objective of maximizing the discounted economic benefits stream from both the consumptive and nonconsumptive uses of deer. This bioeconomic model integrates economic benefits estimated using the dichotomous choice contingent valuation method with biological growth constraints on deer. Using a hunting zone in California as a case study, the model found that the optimal levels of buck hunting permits sold should change on a rotational basis over time and that the current practice of not selling doe hunting permits for that zone is non optimal.  相似文献   
192.
Even as advances in information theory over the last quarter century have cast increasing doubt on the proposition that firms successfully maximize profits, the objective of profit maximization continues to be an axiomatic feature of the neoclassical theory of the firm. This paper attempts to improve our understanding firms by treating the objective function as an open question. Specifically, an ontogenetic thought experiment is undertaken to address the question of what differentiates production teams from firms by asking why team members would sell their control rights to a principal, thereby transforming the team into a firm. What results is an account of the emergence of the objective of profit seeking. Profit seeking emerges endogenously as a more fit alternative than the objective of value maximization, which is less capable of coping with uncertainty through purposive adaptation.  相似文献   
193.
Economic reforms,efficiency and productivity in Chinese banking   总被引:1,自引:0,他引:1  
This paper analyzes the impact of banking reforms on efficiency and total factor productivity (TFP) change in Chinese banking industry. Using an input distance function, we find that joint-equity banks are more efficient than wholly state-owned banks (WSOBs). Furthermore, both WSOBs and joint-equity banks are found to be operating slightly below their optimal size, suggesting potential advantages in expansion of their businesses. Overall, TFP growth was 4.4% per annum for the sample period 1993–2002. Joint-equity banks experienced much higher growth in TFP (5.5% per annum) compared to the WSOBs (1.4% per annum).   相似文献   
194.
We describe a common pool resource game in which players choose how much of the stock to extract in a sequential manner. There are two choices and one represents taking a larger proportion of the stock than the other. After a player makes a choice, the remaining stock grows at a constant rate. We consider a game with a finite number of alternating moves. It is shown that changes in the larger proportion of the stock that the players are allowed to take and the growth rate affect equilibrium, but have little effect on behavior in the laboratory. In addition to observing more cooperation than predicted, we observe that parameters that are strategically irrelevant affect behavior. The results of this research might help policy makers in developing adequate policies to prevent overexploitation of some natural renewable resources.  相似文献   
195.
The determination of interconnection charges to essential facilities is an important problem in regulated telecommunications markets in the wake of the Telecommunications Act of 1996. This paper defines mathematical conditions for the essentiality of upstream productive inputs and examines their implications for efficient interconnection pricing. The paper shows conditions under which the efficient component-pricing rule (ECPR) can be derived as a special case of a Ramsey pricing rule. The paper also shows how efficient pricing differs from the ECPR for a number of interesting cases.  相似文献   
196.
197.
198.
Structural Decomposition Analysis of Physical Flows in the Economy   总被引:5,自引:0,他引:5  
Many environmental problems can be attributedto the extraction and emissions of physicalsubstances. Increasing our understanding of theeconomic and technological driving forcesbehind these physical flows can contribute tosolving the environmental problems related tothem. The input-output framework is a usefulsetting in which to integrate detailedinformation about economic structure andphysical flows. In this article a specificmethod in input-output analysis is reviewed,namely Structural Decomposition Analysis (SDA).It is based on comparative static analysis,which decomposes historical changes of a policyvariable into determinant effects. SDA has beenapplied, for example, to analyze the demand andtechnological driving forces of energy use,CO2-emissions and various other pollutantsand resources. This article examines thetheoretical aspects of structuraldecomposition, in particular those concerningphysical flows and environmental issues.Furthermore, the article includes an extensivesurvey of empirical studies.  相似文献   
199.
Indicators of market power can be ambiguous because cost economies associated with scale and not market imperfections may influence results. This article illustrates that without direct measures of concentration, estimates of costs, scale economies and profitability can be used to identify market power in banking. Secondly, via this method, econometric estimates provide meaningful evidence of market power in the South African banking sector over the study sample period (1979–1998). A reasonable conclusion is that while industrial structure is important, careful consideration needs to be given to cost economies and profitability when assessing market power. In addition, there is a need to consider appropriate policy to reduce market power in banking in South Africa.  相似文献   
200.
In this paper we estimate the willingness topay for a wolf management plan and a wolfdamage plan in Minnesota using the contingentvaluation method. The theoretical definition ofwillingness to pay for wolf protection iscomposed of use and non-use values. Weincorporate a don't know response option in thedichotomous choice valuation questions. A largenumber of respondents answered don't know. Themultinomial logit model is used todifferentiate between don't know and noresponses. Non-use motives are importantfactors that explain willingness to pay. We usethese benefit estimates in combination with twoalternative cost estimates to consider theefficiency of the wolf management and damageplans. Both plans have estimated benefitsgreater than costs.  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