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Summary. Many economics problems are maximization or minimization problems, and can be formalized as problems of solving linear difference systems of the form and r k -r l > c kl , for r-unknowns, with given c-constants. They typically involve strict as well as weak inequalities, with infinitely many inequalities and unknowns. Since strict inequalities are not preserved under passage to the limit, infinite systems with strict inequalities are notoriously hard to solve. We introduce a unifying tool for solving them. Our main result (Theorem 1 for the countable case, Theorem [2] for the not-necessarily-countable case) introduces a uniform solvability criterion (the -Axiom), and our proof yields a method for solving those that are solvable. The axioms economic intuition extends the traditional ordinal notion of revealed preference to a cardinal notion. We give applications in producer theory, consumer theory, implementation theory, and constrained maximization theory.Received: 21 May 2003, Revised: 29 October 2004, JEL Classification Numbers: C69, D21, D11, D82. Correspondence to: Marcel K. RichterWe thank Professor Leonid Hurwicz for helpful discussions, and a referee for helpful comments.  相似文献   
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The paper analyses the transmission of US monetary policy shocks to global equity markets and the macroeconomic determinants of the underlying transmission process. We show that there is a substantial cross‐country heterogeneity in reactions across 50 equity markets worldwide, with returns falling on average around 2.7% in response to a 100 basis point tightening of US monetary policy, but ranging from a zero response in some to a reaction of 5% or more in other markets. As to the determinants of the strength of transmission to individual countries, we test the relevance of their macroeconomic policies and the role of real and financial integration. We find that in particular the degree of global integration of countries – and not a country's bilateral integration with the United States – is a key determinant for the transmission process.  相似文献   
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Does competitive entry structurally change key marketing metrics?   总被引:1,自引:1,他引:0  
To what extent does competitive entry create a structural change in key marketing metrics? New players may just be a temporal nuisance to incumbents, but could also fundamentally change the latter's performance evolution, or induce them to permanently alter their spending levels and/or pricing decisions. Similarly, the addition of a new marketing channel could permanently shift shopping preferences, or could just create a short-lived migration from existing channels. The steady-state impact of a given entry or channel addition on various marketing metrics is intrinsically an empirical issue for which we need an appropriate testing procedure.In this study, we introduce a testing sequence that allows for the endogenous determination of potential change (break) locations, thereby accounting for lead and/or lagged effects of the introduction of interest. By not restricting the number of potential breaks to one (as is commonly done in the marketing literature), we quantify the impact of the new entrant(s) while controlling for other events that may have taken place in the market. We illustrate the methodology in the context of the Dutch television advertising market, which was characterized by the entry of several late movers. We find that the steady-state growth of private incumbents' revenues was slowed by the quasi-simultaneous entry of three new players. Contrary to industry observers' expectations, such a slowdown was not experienced in the related markets of print and radio advertising.  相似文献   
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In this paper we develop a dynamic two-period model of imperfect competition to analyse the effects of European antidumping duties on firm behaviour and domestic welfare. Our model is one of the first to complement the European empirical literature on antidumping policy and can usefully be compared with papers dealing with the effects of US antidumping policy. We arrive at three important conclusions: (a) the strategic behaviour of European firms under European antidumping rules may run in the opposite direction compared to the incentives for US firms provided under the US antidumping rules; (b) US antidumping rules perform better than European rules in terms of domestic welfare and in terms of protecting domestic value added and employment; (c) the Strategic Trade Policy argument for protection need not apply for antidumping duties because the level of protection is endogenously determined by the firms involved.  相似文献   
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The construction industry has great opportunities to significantly reduce CO2 emissions by improving the energy efficiency of residential buildings. However, in this industry, diffusion of cost‐effective clean technologies has been notoriously slow and below potential. This paper sheds light on factors that explain why construction companies have been reluctant to adopt energy‐efficient technologies. It questions why some companies have intensified their investments in clean technologies, while others are lagging behind. Based on a multiple case study of four Dutch building contractors, the paper shows that contractors that actively gather information and build internal technical capacity are keener on adopting energy‐efficient technologies. Findings also reveal that it will be a major challenge for the construction industry to communicate the advantages of clean technologies to (potential) home buyers and create market demand. Copyright © 2008 John Wiley & Sons, Ltd and ERP Environment.  相似文献   
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