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1.
We extend the Salter-Swan model to include both factor markets and semi-traded goods. In our model, changes in relative factor prices depend on changes in world commodity prices, factor endowments, and the trade balance. In contrast, only changes in world commodity prices can affect factor prices in the neoclassical trade model. The inclusion of semi-traded goods weakens the magnification effect in both the Stolper-Samuelson and Rybczynski theorems. When imports and domestic goods are poor substitutes, a characteristic of some commodities in developing countries, the sign of the Stolper-Samuelson theorem is reversed. 相似文献
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Sir Alfred Sherman 《Economic Affairs》1992,13(1):19-21
In the first of two articles Sir Alfred Sherman, advisor to Conservative leaders in the 1970s and 1980s and a founder of the Centre for Policy Studies, claims that post-war economics has reached a dead-end. 相似文献
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Roger Sherman 《Applied economics》2013,45(3):225-228
A Special class of promotions where the consumer is invited to play a game, receive trading stamps or accept gifts has continually elicited reactions from economists, congressional investigators and certain consumer groups. Furthermore, many of these promotions are condemned by their originators, yet they persist! I submit that our ability to effectively treat the problem has been limited by a lack of theoretical understanding of the fundamental causes and features that underlie such promotions. This paper is an attempt to provide a general theory of these cases which I have titled the oligopolistic ‘lock-in’. Government intervention may often be necessary for the dissolution of the ‘lock-in’, but while firms may wish to free themselves from its grip, unfavorable publicity from such intervention has historically forced them to defend the status quo. In such cases, an ounce of prevention is worth a pound of cure: if managers in industries where the ‘lock-in’ can exist understand the phenomenon, they can (hopefully) avoid its dilemma. Likewise, economists concerned with the public policy aspects can treat the causes rather than the symptoms. 相似文献
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Using radial super-efficiency data envelopment analysis (DEA) has improved the discriminating performance across efficient decision-making units (DMUs). This paper extends the super-efficiency approach to a non-radial super-efficiency DEA (NRSE-DEA) index. NRSE-DEA is shown to be invariant to units of input (output) measurement. NRSE-DEA is illustrated here via an application to NATO burden-sharing assessment in which the DMUs are the member nations of NATO. The NRSE-DEA provides additional insights into the ranking of efficient countries, suggesting which are absorbing a particularly large share of NATO responsibilities. The NRSE-DEA generates a smaller set of efficient DMUs. This, in turn, provides more discriminatory power, a more accurate measure of super-efficiency, a more meaningful ranking of the efficient burden sharing countries, and a more reliable assessment of contributions by NATO members, amongst other policy issues. 相似文献
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The problem in estimating a social accounting matrix (SAM) for a recent year is to find an efficient and cost-effective way to incorporate and reconcile information from a variety of sources, including data from prior years. Based on information theory, the paper presents a flexible 'cross entropy' (CE) approach to estimating a consistent SAM starting from inconsistent data estimated with error, a common experience in many countries. The method represents an efficient information processing rule-using only and all information available. It allows incorporating errors in variables, inequality constraints, and prior knowledge about any part of the SAM. An example is presented, applying the CE approach to data from Mozambique, using a Monte Carlo approach to compare the CE approach to the standard RAS method and to evaluate the gains in precision from utilizing additional information. 相似文献
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Roger Sherman 《Review of Industrial Organization》1985,2(2):178-193
The Averch and Johnson model of a rate-of-return regulated firm seems to have captivated economists and focused their attention on modest technical inefficiency. Pricing distortions, which were revealed by Welliscz, and the incentive for more extreme technical distortions, which was described by Westfield, are not as widely considered or even understood twenty years after the articles appeared. Analysis using uncertainty and dynamic methods has also failed to treat the full range of rate-of-return implications. To do justice to these original contributions more effort is called for in designing new institutions of public utility regulation. 相似文献
10.
A multisector computable general-equilibrium model for the Yugoslav economy is used to analyze some of the internal and external causes of the foreign-exchange crisis of the 1976–1980 period. Methodologically, its modeling approach, appropriately modified for institutional differences, can be used to study the behavior of socialist economies in which prices play a role in resource allocation. Empirically, the results suggest that internal policy errors and systemic factors were the predominant force behind Yugoslavia's growing foreign-exchange shortage between 1976 and 1980. J. Comp. Econ., March 1985, 9(1), pp. 46–70. University of California, Berkeley, California 94720. 相似文献