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Nick Baigent 《Journal of Mathematical Economics》1985,14(1):1-4
Continuity of social choice is reformulated in terms of the quotient topology on profiles of individual preferences induced by the equivalence class corresponding to anonymity. It is shown that Chichilnisky's impossibility continues to hold. 相似文献
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This paper presents a novel application of advanced methods from Fourier analysis to the study of ultra-high-frequency financial data. The use of Lomb–Scargle Fourier transform, provides a robust framework to take into account the irregular spacing in time, minimising the computational effort. Likewise, it avoids complex model specifications (e.g. ACD or intensity models) or resorting to traditional methods, such as (linear or cubic) interpolation and regular resampling, which not only cause artifacts in the data and loss of information, but also lead to the generation and use of spurious information. 相似文献
76.
Nick Hanley Douglas MacMillan Robert E. Wright Craig Bullock Ian Simpson Dave Parsisson Bob Crabtree 《Journal of Agricultural Economics》1998,49(1):1-15
This paper reports results from a study of the economic value of the conservation benefits of Environmentally Sensitive Areas (ESAs) in Scotland. The main novelty of the approach taken is in comparing two direct valuation methods, namely contingent valuation and choice experiments, to value these benefits. The Contingent Valuation Method (CVM) is well-established as a technique for valuing the sorts of landscape and wildlife enhancements associated with ESAs. The CVM experiment reported here uses a dichotomous choice format, and includes a new correction for part-whole bias. Choice experiments are much less used as an environmental valuation technique. We note several advantages of such experiments over CVM, and then report characteristic values and ‘programme values’ estimated using the method. This application brings to light some problems in applying the choice experiment method. Finally, we discuss the issue of benefits transfer in the context of these two approaches to valuation. 相似文献
77.
Nick Collett 《Journal of Business Finance & Accounting》2004,31(1-2):3-35
Using event study methodology, we examine market reactions to nearly 2,000 trading statements during the period 1995‐2001. We find that profit warnings outnumber upgrades by 50%, and, in line with previous US studies, we find that market reaction to the actual announcements is considerably greater for profit warnings than for upgrades.Sub-samples demonstrate significant market reaction to profit warnings for all sizecontrolled portfolios, but that reaction to the announcements is greatest for small companies.Examination of pre- and post-announcement CARs shows no pre-announcement market anticipation of the announcements.Post-announcement there is a significant positive abnormal return on the day after the announcement of bad news for the small company subsample.Other post-announcement results are small and insignificant.Trading volume results are consistent with this picture. Finally, when the trading statements are examined for news on turnover and margin changes, we find that the market reaction to margin changes is greater than market reaction to turnover changes. 相似文献
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In this paper we propose a multivariate extension of the partial adjustment model of financial ratios. To that end, we use a dynamic factor model which assumes that financial ratios measuring, essentially, the same economic–financial dimension of the firm evolve in a similar way, reflecting the evolution of the common factor. The proposed model is hierarchical with three levels. The first describes the relationship between each ratio and its common factor; the second describes the evolution of the common factors over time by means of Lev's ( 1969 ) partial adjustment model; and the third analyzes the similarity of firms' adjustment coefficients, taking into account their characteristics. The methodology is applied to the analysis of a set of financial ratios related to the business and financial structure of the firm. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
80.
Manuel?Frondel Peter?Gr?sche Christoph?M.?Schmidt RWI Essen und Ruhr-Universit?t Bochum 《能源经济杂志》2008,32(2):97-101
Home renovation is generally asserted to be a highly effective means to increase residential energy efficiency and thereby contribute to climate protection from reduced energy consumption. As part of a larger package of measures in the residential sector, the German government is consequently providing financial support for home audits from recognized energy experts who provide advice on retrofitting options. To date, the question concerning the effectiveness these home audits has largely escaped empirical scrutiny. The present paper fills this void by providing evidence for considerable free-rider effects within the home audit program, yielding serious reservations with respect to both the effectiveness of the program and its fiscal costs. Moreover, given the substantial differences between the gross- and net effects of home audits that are revealed by this analysis, the program’s contribution to climate protection and thereby the central justification for the associated government outlays is called into question. The social benefit of the program emerges only from those retrofits that would not have been undertaken in the absence of the home audit. 相似文献