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11.
Philippe Bazard 《European Journal of the History of Economic Thought》2013,20(3):350-362
Commentators have underlined Sidgwick's influence on Edgeworth's thinking and more particularly on New and Old Methods of Ethics (1877). But have failed to notice that Sidgwick remained a major reference in Mathematical Psychics (1881). Therefore, the purpose of this paper is to show that, in this book, Edgeworth wanted to refine upon the problem of wages addressed by Sidgwick in 1879. The thesis of the paper is that Sidgwick and Edgeworth's disagreement as to the role of open competition in the resolution of indeterminacy in the labour market stems from two different notions of competition. This latter can be seen as a differentiation process, as in Sidgwick's, or as a replication mechanism, as in Edgeworth's. 相似文献
12.
Non-convex Technologies and Cost Functions: Definitions,Duality and Nonparametric Tests of Convexity 总被引:1,自引:0,他引:1
Walter?Briec Kristiaan?KerstensEmail author Philippe Venden?Eeckaut 《Journal of Economics》2004,81(2):155-192
This contribution is the first systematic attempt to develop a series of nonparametric, deterministic technologies and cost
functions without maintaining convexity. Specifically, we introduce returns to scale assumptions into an existing non-convex
technology and, dual to these technologies, define non-convex cost functions that are never lower than their convex counterparts.
Both non-convex technologies and cost functions (total, ray-average and marginal) are characterized by closed form expressions.
Furthermore, a local duality result is established between a local cost function and the input distance function. Finally,
nonparametric goodness-of-fit tests for convexity are developed as a first step towards making it a statistically testable
hypothesis.
An erratum to this article is available at . 相似文献
13.
Antoine Leblois Philippe Quirion Agali Alhassane Seydou Traoré 《Environmental and Resource Economics》2014,57(4):527-551
In the Sudano-Sahelian region, which includes South Niger, the inter-annual variability of the rainy season is high and irrigation is limited. As a consequence, bad rainy seasons have a massive impact on crop yield and regularly result in food crises. Traditional insurance policies based on crop damage assessment are not available because of asymmetric information and high transaction costs compared to the value of production. We assess the risk mitigation capacity of an alternative form of insurance which has been implemented at a large scale in India since 2003: insurance based on a weather index. We compare the efficiency of various weather indices to increase the expected utility of a representative risk-averse farmer. We show the importance of using plot-level yield data rather than village averages, which bias results due to the presence of idiosyncratic shocks. We also illustrate the need for out-of-sample estimations in order to avoid overfitting. Even with the appropriate index and assuming substantial risk aversion, we find a limited gain of implementing insurance, which roughly corresponds to, or slightly exceeds, the cost observed in India for implementing such insurance policies. However, when we separately treat the plots with and without fertilisers separately, we see that the benefit of insurance is slightly higher in the former case. This suggests that insurance policies may slightly increase the use of risk-increasing inputs such as fertilisers and improved cultivars, and hence improve average yields, which remain very low in the region. 相似文献
14.
A corporate balance-sheet approach to currency crises 总被引:2,自引:0,他引:2
This paper presents a general equilibrium currency crisis model of the ‘third generation’, in which the possibility of currency crises is driven by the interplay between private firms’ credit-constraints and nominal price rigidities. Despite our emphasis on microfoundations, the model remains sufficiently simple that the policy analysis can be conducted graphically. The analysis hinges on four main features (i) ex post deviations from purchasing power parity; (ii) credit constraints a la Bernanke-Gertler; (iii) foreign currency borrowing by domestic firms; (iv) a competitive banking sector lending to firms and holding reserves and a monetary policy conducted either through open market operations or short-term lending facilities. We derive sufficient conditions for the existence of a sunspot equilibrium with currency crises. We show that an interest rate increase intended to support the currency in a crisis may not be effective, but that a relaxation of short-term lending facilities can make this policy effective by attenuating the rise in interest rates relevant to firms. 相似文献
15.
Philippe Jehiel 《Journal of Economic Theory》2007,134(1):494-512
We study multi-object auctions where agents have private and additive valuations for heterogeneous objects. We focus on the revenue properties of a class of dominant strategy mechanisms where a weight is assigned to each partition of objects. The weights influence the probability with which partitions are chosen in the mechanism. This class contains efficient auctions, pure bundling auctions, mixed bundling auctions, auctions with reserve prices and auctions with pre-packaged bundles. For any number of objects and bidders, both the pure bundling auction and separate, efficient auctions for the single objects are revenue-inferior to an auction that involves mixed bundling. 相似文献
16.
We analyse a disregarded environmental policy instrument: a switch in government expenditure away from energy (or other natural
resources) and toward a composite good which includes energy-saving expenditure. We first develop two variants of an analytical
general equilibrium model. A composite good is produced with constant returns to scale, and energy is imported or produced
domestically with diminishing returns, yielding a differential rent to its owners. The government purchases energy and composite
goods from private firms. Such a policy unambiguously increases employment. It also raises private consumption and welfare
under two conditions: (i) it is not too costly and (ii) the initial share of the resource is smaller in public spending than
in private consumption, or the difference is small enough. We then run numerically a model featuring both importation and
domestic production of energy (oil, gas and electricity), for the OECD as a whole. Simulations show that employment, welfare
and private consumption rise. We provide magnitudes for different parameter values.
Earlier versions of this paper have benefited from conference participants at the European Council for an Energy-Efficient
Economy, International Society for Ecological Economics World Congress, CIRED seminar and EUREQua environmental economics
seminar. We especially thank Michèle Sadoun and two anonymous referees. The usual disclaimer applies. 相似文献
17.
18.
Vincent A. Hildebrand María Noel Pi Alperin Philippe Van Kerm 《Review of Income and Wealth》2017,63(2):288-309
This paper examines the relative well‐being of Portuguese immigrants in Luxembourg by looking at indicators of material deprivation. We document material deprivation differences between immigrants and nationals—the “deprivation gap”—and measure the extent to which income differentials (and other sociodemographic differences) explain this gap using a combination of non‐parametric methods and a versatile graphical device. We find a large and significant deprivation gap against Portuguese immigrants, whatever the indicator considered. The extent to which the gap is merely a reflection of differences in income, however, depends on what deprivation items are taken into consideration. Income differences almost fully account for material deprivation differences when the latter is measured using the items included in the official EU social indicator of material deprivation. Inclusion of housing condition indicators mitigates this relationship and we then find compelling evidence that the deprivation gap is not entirely accounted for by income differentials. 相似文献
19.
Richard?BaronEmail author Jacques?Durieu Hans?Haller Philippe?Solal 《Economic Theory》2004,23(2):445-454 (2004)
Summary. We consider the class of (finite) spatial games. We show that the problem of determining whether there exists a Nash equilibrium in which each player has a payoff of at least k is NP-complete as a function of the number of players.Received: 15 September 2002, Revised: 9 March 2003, JEL Classification Numbers:
C72.Correspondence to: H. HallerWe thank a referee for helpful comments. The hospitality of the Institute of Economics, University of Copenhagen, and the Institute for Advanced Studies, Vienna, is gratefully acknowledged by the third author. 相似文献
20.
Philippe Durance Author Vitae 《Technological Forecasting and Social Change》2010,77(9):1469-1475
La prospective is generally considered to have grown after WWII in developed countries with two main centers, France and the United States of America. In France, the development of prospective does constitute an important point in contemporary history. Stemming from an idea from philosopher Gaston Berger near the end of the 1950s, a spirit arose accompanied by a practice spread in the central administration (government) and in major French corporations. The objective of this article is not to claim any French originality in thinking about the future. Instead, the following pages show how an original approach blending reflection on the future and present action took shape and the relationship that developed involving current practices on the other side of the Atlantic, mainly the USA, with the help of a few intermediaries. 相似文献