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排序方式: 共有41条查询结果,搜索用时 15 毫秒
21.
Freddy Heylen 《Review of World Economics》1995,131(4):623-654
Institutions and the Rise of Taxes on Labour in the OECD. —The aim of this paper is to explain differences among OECD countries in the evolution of taxes on labour during the last two decades. Its main message is that these taxes are to an important extent structurally and institutionally determined. Tax rates on labour are shown to have risen more strongly in countries where: (i) government has been controlled mainly by leftist parties; (ii) taxes (in general) are decided and collected mainly by central government (fiscal centralization); (iii) coalition and minority governments are frequent; (iv) the partisan composition (political colour) of these coalitions is unstable; (v) the labour market is neither centralized nor decentralized. 相似文献
22.
We give an easy example of two strictly positive local martingales that fail to be uniformly integrable, but such that their product is a uniformly integrable martingale. The example simplifies an earlier example given by the second author. We give applications in mathematical finance and we show that the phenomenon is present in many incomplete markets. 相似文献
23.
Using the Ray-Knight theorem we give conditions for anonnegative diffusion without drift to reach zero or not. These results also givenecessary and sufficient conditions for such a diffusion process to be a martingale (and notjust a local martinagle). We apply these results in order to give necessary and sufficientconditions for nonnegative diffusion to have equivalent local martingale measures. 相似文献
24.
25.
Exponential Hedging and Entropic Penalties 总被引:13,自引:0,他引:13
Freddy Delbaen Peter Grandits Thorsten Rheinländer Dominick Samperi Martin Schweizer Christophe Stricker 《Mathematical Finance》2002,12(2):99-123
We solve the problem of hedging a contingent claim B by maximizing the expected exponential utility of terminal net wealth for a locally bounded semimartingale X . We prove a duality relation between this problem and a dual problem for local martingale measures Q for X where we either minimize relative entropy minus a correction term involving B or maximize the Q -price of B subject to an entropic penalty term. Our result is robust in the sense that it holds for several choices of the space of hedging strategies. Applications include a new characterization of the minimal martingale measure and risk-averse asymptotics. 相似文献
26.
This paper examines the impact of housing tenure choice on unemployment duration in Belgium using EU-SILC micro data. We contribute to the literature in distinguishing homeowners with mortgage payments and outright homeowners. Accounting for tenure endogeneity and unobserved heterogeneity, we find that homeowners with a mortgage exit unemployment first, while outright owners stay unemployed the longest. Tenants take an intermediate position. Our results emphasize the key role of housing costs in the link between housing tenure and labour market outcomes. Considered together with the results of recent macroeconomic research on housing and employment in Belgium, this paper provides indirect evidence for significant negative effects of homeownership on the labour market and the economy beyond the owners themselves. 相似文献
27.
Central bank independence: Only part of the inflation story 总被引:1,自引:1,他引:0
Summary Central bank independence: Only part of the inflation story The idea that countries with an independent central bank perform better on price stability is very popular and confirmed by studies investigating the issue empirically. Yet, using the Barro-Gordon model we show that the gains from a more independent central bank are not fixed. They are larger in countries with unstable governments, not committed to fixed exchange rates, and in countries were left-wing parties hold a strong position. The effect of increasing central bank independence is also shown to depend on the level of the natural unemployment rate and the slope of the short-term Phillips curve.We are grateful to Eric Pentecost and two referees of this journal for valuable comments on an earlier version of the paper. Any remaining errors are ours. 相似文献
28.
We give two examples showing that for unbounded continuous price processes, the no-free-lunch assumption and the existence of an equivalent martingale measure are not equivalent. In fact it turns out that the notion of an equivalent local martingale measure is natural in this context. 相似文献
29.
Eshien Chong Freddy Huet Stphane Saussier 《Annals of Public and Cooperative Economics》2006,77(4):521-554
ABSTRACT ** : Using an original database concerning 1102 French local public authorities in 2001, we explore the relationships between prices charged by private operators in water contracts and ex post competition. We show that prices charged in contracts in which operators are in a monopoly situation throughout the duration of the contract, are not affected by a ‘competition effect’ between private operators. However, a competition effect between private operators and public management appears to be crucial in explaining prices combined with a ‘termination effect’, reflecting the fact that the contract is close to being renewed, and hence re‐auctioned. 相似文献
30.
Freddy Delbaen Samuel Drapeau Michael Kupper 《Journal of Mathematical Economics》2011,47(4-5):401-408
In the paradigm of von Neumann and Morgenstern (1947), a representation of affine preferences in terms of an expected utility can be obtained under the assumption of weak continuity. Since the weak topology is coarse, this requirement is a priori far from being negligible. In this work, we replace the assumption of weak continuity by monotonicity. More precisely, on the space of lotteries on an interval of the real line, it is shown that any affine preference order which is monotone with respect to the first stochastic order admits a representation in terms of an expected utility for some nondecreasing utility function. As a consequence, any affine preference order on the subset of lotteries with compact support, which is monotone with respect to the second stochastic order, can be represented in terms of an expected utility for some nondecreasing concave utility function. We also provide such representations for affine preference orders on the subset of those lotteries which fulfill some integrability conditions. The subtleties of the weak topology are illustrated by some examples. 相似文献