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101.
Raphael Braga da Silva Bernardo Prôa Bressane Alessandra Pasqualina Viola Antonio Carlos Figueiredo Pinto T. Diana L. van Aduard de Macedo Soares 《Latin American Business Review》2013,14(4):311-328
Based on studies of idiosyncratic volatility developed in the recent literature, this study analyzes its relation with expected returns through the breakdown of idiosyncratic volatility in the Brazilian stock market and presents evidence of the importance of expected idiosyncratic volatility for asset pricing. We study the impact of the expected and unexpected components of idiosyncratic volatility on the returns of shares listed on the BOVESPA between 2004 and 2011. The results show a strong positive and significant relation between expected idiosyncratic volatility and returns. This evidence is highlighted when we use unexpected idiosyncratic volatility to control for unexpected returns. Additional robustness tests, controlling for size and momentum effects, also have positive and significant coefficients, corroborating previous findings. 相似文献
102.
Emilio Barone Giovanni Barone-Adesi & Antonio Castagna 《European Financial Management》1998,4(2):231-282
The pricing of bonds and bond options with default risk is analysed in the general equilibrium model of Cox, Ingersoll, and Ross (1985). This model is extended by means of an additional parameter in order to deal with financial and credit risk simultaneously. The estimation of such a parameter, which can be considered as the market equivalent of an agencies' bond rating, allows to extract from current quotes the market perceptions of firm's credit risk. The general pricing model for defaultable zero-coupon bond is first derived in a simple discrete-time setting and then in continuous-time. The availability of an integrated model allows for the pricing of default-free options written on defaultable bonds and of vulnerable options written either on default-free bonds or defaultable bonds. A comparison between our results and those given by Jarrow and Turnbull (1995) is also presented. 相似文献
103.
104.
Jose Luis Arquero Montano Jose Antonio Donoso Trevor Hassall John Joyce 《Accounting Education: An International Journal》2013,22(3):299-313
The increasingly dynamic environment in which accountants work has necessitated a reorientation of accounting education. In some countries this issue has raised great interest amongst accounting educators and practitioners. The ongoing debate has already resulted in the publication of several statements and research papers that have raised the question of the relevance of the role of vocational skills in accounting education. Examples of these vocational skills are communication skills, interpersonal skills, and problem-solving skills. This paper reports on the importance that the employers of management accountants gave to a specified set of vocational skills and capabilities and the level of ability of these skills exhibited by students. In order to prioritize future developments an integrated analysis of the two attributes, importance and exhibited level, is enabled by the use of strategic mapping. The results of this study suggest that the employers perceive deficiencies in several capabilities that they have identified as being quite important. These deficiencies exist, in the employers' opinion, both prior to recruitment and on professional qualification. The research also indicates that, in the opinion of these employers, the development of these skills should be a central concern for universities and professional bodies. The employers also indicated that vocational skills should be attained in an integrated way. 相似文献
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106.
During the past 15 years Brazil has undergone a process of rapid modernization in its telecommunications. Starting from a chaotic situation, institutional foundations were established and an ambitious development programme carried out. A fundamental piece of this programme was a planning process that proved to be flexible and adequate to handle the social and economic disparities of the country. The policies that have emerged from the planning process were implemented and provided good economic results and satisfaction to customers. 相似文献
107.
108.
Antonio Estache 《Review of Industrial Organization》2006,29(1-2):3-26
In the last 15 years, a variety of public private-partnerships in infrastructure have been adopted throughout the developing and transition world. Because many of these experiences are also turning sour, it seems important to separate facts from emotions. The paper argues that the wide differences in interpretations of the facts can be explained by differences in the assessment criteria used to assess the incremental effect of reforms. It is also driven by the sectors, the regions and the actors on which the analysis tends to focus. 相似文献
109.
Applications of Fuzzy Regression in Actuarial Analysis 总被引:1,自引:0,他引:1
In this article, we propose several applications of fuzzy regression techniques for actuarial problems. Our main analysis is motivated, on the one hand, by the fact that several articles in the financial and actuarial literature suggest using fuzzy numbers to model interest rate uncertainty but do not explain how to quantify these rates with fuzzy numbers. Likewise, actuarial literature has recently focused some of its attention in analyzing the Term Structure of Interest Rates (TSIR) because this is a key instrument for pricing insurance contracts. With these two ideas in mind, we show that fuzzy regression is suitable for adjusting the TSIR and discuss how to apply a fuzzy TSIR when pricing life insurance contracts and property‐liability policies. Finally, we reflect on other actuarial applications of fuzzy regression and develop with this technique the London Chain Ladder Method for obtaining Incurred But Not Reported Reserves. 相似文献
110.
Experiments Testing Multiobject Allocation Mechanisms 总被引:2,自引:0,他引:2
John O. Ledyard David Porter Antonio Rangel 《Journal of Economics & Management Strategy》1997,6(3):639-675
This paper reports the results of over 130 auctions conducted under controlled conditions to examine the robustness of several auction mechanisms to allocate multiple objects. The simultaneous discrete auction process used by the Federal Communications Commission to allocate Personal Communications licenses was contrasted with a sequential auction and a combinatorial auction over a variety of demand conditions. In test environments created to check only the minimum competency of the procedures, the simultaneous discrete auction process produces highly efficient allocations, approaching levels similar to those found with a continuous form of the auction, and it outperforms a sequential auction. However, in environments created to stress test the procedures, a combinatorial auction outperforms the simultaneous discrete auction. 相似文献