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131.
Fuentes Hugo J. Grifell-Tatjé Emili Perelman Sergio 《Journal of Productivity Analysis》2001,15(2):79-94
Malmquistindexes of productivity are generally estimated using index numbertechniques or non-parametric frontier approaches. The aim ofthis paper is to show that Malmquist indexes can be estimatedin a similar way using parametric-deterministic or parametric-stochasticfrontier approaches. To allow a multi-output multi-input technologyand for technical change in production, we adopt an output distancefunction which is specified in a translog form. We then showthat using the estimated parameters, several radial distancefunctions can be calculated and combined in order to estimateand decompose the productivity index. Finally, this approachis applied to a panel of Spanish insurance companies. The mainresults confirm those generally obtained for financial services:very low rates of growth and technical change in spite of a rapidderegulation process and expansion of activity. 相似文献
132.
Sergio Cesaratto 《Intereconomics》2018,53(6):294-295
133.
Eduardo Levy Yeyati Sergio L. Schmukler Neeltje Van Horen 《Journal of Financial Intermediation》2009,18(3):432-463
This paper takes advantage of the fact that some stocks trade both in domestic and international markets to characterize the degree of international financial integration. The paper argues that the cross-market premium (the ratio between the domestic and the international market price of cross-listed stocks) provides a valuable measure of international financial integration and the effectiveness of capital controls. Using autoregressive (AR) models to estimate convergence speeds and non-linear threshold autoregressive (TAR) models to identify non-arbitrage bands, the paper shows that price deviations across markets are rapidly arbitraged away and bands are narrow, particularly so for liquid stocks. The paper also shows that regulations on cross-border capital flows effectively segment domestic markets. As expected, the effects of both types of capital controls are asymmetric but in the opposite direction: controls on outflows induce positive premia, while controls on inflows generate negative premia. Both vary with the intensity of capital controls. 相似文献
134.
Newton Da Costa Jr. Marco Goulart Cesar Cupertino Jurandir Macedo Jr. Sergio Da Silva 《Journal of Banking & Finance》2013
We examine whether investing experience can dampen the disposition effect, that is, the fact that investors seem to hold on to their losing stocks to a greater extent than they hold on to their winning stocks. To do so, we devise a computer program that simulates the stock market. We use the program in an experiment with two groups of subjects, namely experienced investors and undergraduate students (the inexperienced investors). As a control procedure, we consider random trade decisions made by robot subjects. We find that though both human subjects show the disposition effect, the more experienced investors are less affected. 相似文献
135.
136.
Financial models are studied where each asset may potentially lose value relative to any other. Conditioning on nondevaluation, each asset can serve as proper numéraire and classical valuation rules can be formulated. It is shown when and how these local valuation rules can be aggregated to obtain global arbitrage‐free valuation formulas. 相似文献
137.
138.
In this article, we discuss some key aspects of Robert Sugden’s contribution to social sciences. We focus on both his inclination
to consider social orders compatible with the real distribution of knowledge in society and his idea that the market is better seen as a network of
opportunities for mutual advantage. 相似文献
139.
We investigate whether the adoption by workplaces of human resources management (HRM) practices that enhance face‐to‐face communication (FTFC) among employees is associated with productivity gains. The analysis is based on a nationally representative sample of over 500 British trading establishments drawn from the linked 2004 Workplace Employment Relations Survey and Annual Business Inquiry, for which objective measures of labour productivity (value added per employee) are available. We find a positive association between productivity and FTFC in problem‐solving groups, teams and meetings of senior or line managers and employees, provided that FTFC is adopted on a continuous basis. Our finding suggests that British workplaces in the trading sector could increase their productivity by implementing HRM practices in such a way as to enhance knowledge sharing through employees' personal interactions. 相似文献
140.
Sergio Cavalieri Vittorio Cesarotti Vito Introna 《Journal of Organizational Computing & Electronic Commerce》2013,23(3-4):267-287
The aim of this article is to show the advantages that the use of a multiagent model can provide in implementing vertical and lateral coordination among the components of a noncentralized distribution chain. This model has been implemented in Java language in order to allow for the development of a Web-based decision support system that can perform the coordination strategies, simulated in this article in a real logistics chain. This article, after introducing the main concepts related to the adoption of coordination mechanisms within a supply chain, the main issues of agent-oriented technology, and a brief review of the related literature, presents the structure of the proposed model and the static and dynamic behaviors of the decision-making agents. The design issues of specific coordination models, the negotiation mechanisms introduced, and their proper tuning are then discussed. The models have been applied to a real two-level distribution system of an electromechanical company, made up of a supplier and a geographically distributed network of retailers. Experimental results showed the benefits derived from the adoption of coordination-based models, above all in supply contexts, characterized by relevant information sharing among the main tiers of the chain. 相似文献