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61.
This paper presents several results on multimarket competition. First, whenever a firm faces multimarket competitors that sell goods in markets to which the firm itself has no access, the firm gains a strong incentive to expand production in its own market(s). In the capacity choice model, such a firm builds larger than Cournot capacity and pushes its competitors towards other markets. Consumers always benefit from multimarket competition. In asymmetric market structures, some firms may also benefit from multimarket arrangements, but in symmetric ones, all firms are necessarily harmed by it. Second, the intensification of indirect competition is not necessarily bad for the firm. It may be the case that, the more competitors its competitors have, the higher the firm’s profit. Finally, this model also has a multiproduct interpretation which suggests that a merger of single‐product firms may be beneficial or harmful from a social welfare perspective, depending on whether the new entity will compete with several single‐product firms or another multiproduct one.  相似文献   
62.
Collusive equilibria exist in simultaneous ascending bid auctions with multiple objects, even with large complementarities in the buyers' utility functions. The bidders collude by dividing the objects among themselves, while keeping the prices low. In the most collusive equilibrium the complementarities are never realized. The scope for collusion however narrows as the ratio between the number of bidders and the number of objects increases.  相似文献   
63.
Global energy consumption is growing. The growth in energy consumption is now covered roughly equally by renewable energy resources and fossil energy resources. Nevertheless, crude oil, natural gas and coal continue to form the backbone of energy supplies. This means that the dependency of energy supplies on fossil energy resources will continue for the foreseeable future. In Germany as well, there is no end in sight of the country decreasing its high dependency on imports of fossil energy resources despite the high growth rate of renewables—and due in part to the decline in domestic production and the withdrawal from nuclear power generation. Crude oil, natural gas, hard coal and lignite with a share of around 80%, still make the largest contribution to the German and global primary energy consumption.All of the renewables together cover around 17% of global energy consumption. Despite the almost inexhaustible potential, making energy generation from renewable sources available at a large scale and commensurate with demand is still in its infancy. By way of contrast, very large reserves of fossil energy resources have already been developed for many years, and are being used in growing quantities. The global comparison of already produced and therefore consumed energy resources and the still existing reserves and resources, reveal that large non-depleted energy potential still exists in all regions around the world. Whilst the potential hardly appears to be touched in Austral-Asia, in the CIS and North America, only a small portion has been produced to date even in Europe. This wealth in resources is primarily attributable to the large deposits of coal found on all continents, which, unlike conventional crude oil and natural gas, are not restricted to a few special regions. Although the Middle East is an extremely important region for crude oil and natural gas, the minor coal reserves in the area mean that its overall potential is comparatively small.  相似文献   
64.
Abstract

Concerns with growth have steadily advanced since the Limits to Growth report due particularly to human impacts on the natural environment. Since that time, neoliberal capitalism has become increasingly reliant on growth exacerbating these problems. The destructive outcomes of these strategies has led to a growing interest in degrowth. Analysts are examining how we can create economies that eschew a growth imperative while still supporting human thriving. Tourism as a key facet of capitalism is implicated in these issues and recent concerns with “overtourism” are only one symptom of the problem. This article presents a conceptual consideration of issues of degrowth in tourism. It examines current tensions in international mobility and argues just and sustainable degrowth will require greater attention to equity. This analysis suggests that essential to such an agenda is redefining tourism to focus on the rights of local communities and a rebuilding of the social capacities of tourism. This article argues for the redefinition of tourism in order to place the rights of local communities above the rights of tourists for holidays and the rights of tourism corporates to make profits.  相似文献   
65.
In auctions with correlated types it is possible to design mechanisms such that full surplus extraction can be obtained as the outcome of an equilibrium in which agents use (weakly) dominant strategies. However, it is not assured that the outcome is unique. We present an example in which no mechanism can yield the full surplus extraction outcome as the unique Bayesian equilibrium outcome. Next we show that in the standard auction model the multiplicity problem can be fully resolved using sequential mechanisms, i.e., we show that it is possible to obtain the full surplus extraction outcome as the unique perfect Bayesian equilibrium outcome.Journal of Economic LiteratureClassification Numbers: D44; D70.  相似文献   
66.
Small Business Economics - This paper investigates the relationship between green/non-green technologies and firm growth. By combining the literature on eco-innovations, industrial organisation and...  相似文献   
67.
In equipment‐intensive sectors – such as water utilities, power generation, and gas – billions of dollars are spent in capital equipment. The nature of the investment is often lumpy: at some point a plant has to be replaced and a large investment is required. We characterize the dynamic optimal investment policy of profit‐maximizing and welfare‐maximizing firms. We first show that, when there is no technical progress, the duration of the plant is longer for a profit‐maximizing firm. We then consider technical progress leading to either capacity expansion or to operating costs reduction. We show that duration tends to increase when the installed capacity increases over time, while it tends to decrease when technical progress reduces operating costs, both for profit‐maximizing and welfare‐maximizing firms. Under some conditions, when capacity expands over time the duration of the plant is longer for a profit‐maximizing firm than for a welfare‐maximizing firm.  相似文献   
68.
In Bolivia and Ecuador the concept of Buen vivir, based on indigenous cosmologies, has been formulated by indigenous organisations as an alternative paradigm to mainstream development theory. It has also inspired environmentalist movements in their struggle for a different environmental governance beyond extractivism, and it has been appropriated by national governments to justify economic and social policies and their political agendas. In Peru, Buen vivir is emerging as a political project to express ecological concerns, as well as self-determination, territoriality and cultural rights of indigenous peoples. In these experiences the formulation and implementation of Buen vivir is a complex and contentious process which expresses the tensions and dynamics between indigenous politics and the political economy of extraction. This article explores the different meanings of Buen vivir in Bolivia, Ecuador and Peru and the struggle of indigenous peoples to re-appropriate the concept which has been co-opted by the state using conventional views of development. We argue that Buen vivir serves as a political platform on the basis of which different social movements articulate social and ecological demands based on indigenous principles, in order to challenge the economic and political fundamentals of the state and the current theory, politics and policy-making of development.  相似文献   
69.
An objective criterion for an a priori identification of which methodologies are more appropriate for dealing with the problem of teaching or learning science at a determined school level, in the case of education, are very lax or missed. Today it is difficult to objectively differentiate which is the best strategy for dealing with a determined teaching/learning problem. Objectivity can be achieved through modern logic taken from the formal sciences, such as statistics. In the case of metrological discipline such analytical chemistry, where as in education, there is a continuous development of new methodologies and the performance are always evaluated through which analytical chemist call “figures of merit”. In this article, we establish a guide for future research in education to develop objective parameters (figures of merit) to evaluate and compare different teaching and learning strategies following the example of other disciplines such as analytical chemistry.  相似文献   
70.
Various communication techniques such as humor or two‐sided argumentation are frequently used in advertising. One technique that is common but has not been conceptualized is the deliberate change of perspective of specific product or brand attributes. Based on the reframing method used in neuro‐linguistic programming (NLP) this technique is conceptualized as message reframing, defined as a communication technique that changes the conceptual and/or emotional setting or viewpoint in relation to how a brand is experienced by placing it in a different frame that fits the same brand equally well or better. The effects of message reframing in contrast to conventional advertisements as well as in contrast to humor and two‐sided argumentation are hypothesized and tested in an experimental study. The results reveal that message reframing outplays traditional advertising techniques regarding attention toward the ad, perceived novelty, attitude toward the ad, and attitude toward the brand. Moreover, message reframing does not show the deterioration of source credibility commonly observed in humorous messages, and leads to higher attention, perceived novelty, and attitude toward the ad than two‐sided messages.  相似文献   
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