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91.
We construct comprehensive and comparable indices on the most relevant components of economic infrastructure. An unobserved components model is employed to cover the largest possible number of developing and developed countries over the period 1990–2010. We map major findings from the new indices of infrastructure and provide country rankings, which we also compare with subjective assessments of infrastructure in the World Economic Forum's Global Competitiveness Report. Finally, we exemplify possible applications related to trade and foreign aid. By overcoming several data limitations, our new global index can help assess the links between infrastructure and economic development more systematically.  相似文献   
92.
Making use of considerably improved measures of infrastructure, the study assesses the impact of infrastructure on bilateral trade for a panel of 150 developed and emerging economies during the period 1992–2011. The authors make use of a gravity approach to disentangle the impact of infrastructure on trade and trade costs. Improving infrastructure endowments and quality decreases trade costs and increases international trade flows. Countries with improved infrastructure reduce not only bilateral trade costs but also multilateral trade costs. The decomposition of effects indicates that better infrastructure encourages higher export flows relative to domestic trade flows. Main results of the study prove to be robust, also when considering distinct trade categories (consumption goods, intermediates, and capital goods) for a smaller sample.  相似文献   
93.
Summary. We consider oligopolistic markets in which the notion of shareholders’utility is well-defined and compare the Bertrand-Nash equilibria in case of utility maximization with those under the usual profit maximization hypothesis. Our main result states that profit maximization leads to less price competition than utility maximization. Since profit maximization tends to raise prices, it may be regarded as beneficial for the owners as a whole. Moreover, if profit maximization is a good proxy for utility maximization, then there is no need for a general equilibrium analysis that takes the distribution of profits among consumers fully into account and partial equilibrium analysis suffices.  相似文献   
94.
Sustainable practices can be initiated or encouraged by governmental regulation and economic incentives. A major element to promote sustainability will be, however, the exploration and organization of discursive processes between and among different actors. Many analysts agree that sustainability will remain a highly desirable, but unrealistic option for development, if people do not feel a degree of ownership and identity with the goal of sustainability for their own life and a preference for its policy implications. Inviting the public to be part of the decision-making process from the beginning improves the likelihood that the resulting decision will be accepted. Participatory processes are needed that combine technical expertise, rational decision making, and public values and preferences. To accomplish such an integration, negotiation, mediation, and arbitration are potential solutions. Many different procedures and forms of mediation have been proposed and some tested. One major attempt of the authors has been the organization of round-table discourses among a wide variety of stakeholders to develop environmental policy goals or to design local and regional waste management plans. These discourses are based on the assumption that each participant can contribute to the common good if the setting of the discourse encourages the generation of shared values and discourages strategic reasoning. The emphasis of the paper will be on the model of cooperative discourse and first applications in Germany, Switzerland and the United States. © 1997 John Wiley & Sons, Ltd and ERP Environment.  相似文献   
95.
Summary. Fifty years ago Arrow [1] introduced contingent commodities and Debreu [4] observed that this reinterpretation of a commodity was enough to apply the existing general equilibrium theory to uncertainty and time. This interpretation of general equilibrium theory is the Arrow-Debreu model. The complete market predicted by this theory is clearly unrealistic, and Radner [10] formulated and proved existence of equilibrium in a multiperiod model with incomplete markets.In this paper the Radner result is extended. Radner assumed a specific structure of markets, independence of preferences, indifference of preferences, and total and transitive preferences. All of these assumptions are dropped here. We - like Radner - keep assumptions implying compactness.Received: 17 April 2003, Revised: 26 March 2004, JEL Classification Numbers: D52, D40.  相似文献   
96.
In incomplete financial markets, not every contingent claim can be perfectly replicated by a self-financing strategy. In this paper, we minimize the risk that the value of the hedging portfolio falls below the payoff of the claim at time T. We use a coherent risk measure, introduced by Artzner et al., to measure the risk of the shortfall. The dynamic optimization problem of finding a self-financing strategy that minimizes the coherent risk of the shortfall can be split into a static optimization problem and a representation problem. We will deduce necessary and sufficient optimality conditions for the static problem using convex duality methods. The solution of the static optimization problem turns out to be a randomized test with a typical 0–1 structure. Our results improve those obtained by Nakano. The optimal hedging strategy consists of superhedging a modified claim that is the product of the original payoff and the solution to the static problem.  相似文献   
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