Valuación de un producto estructurado de compra sobre el SX5E cuando la incertidumbre de los rendimientos está modelada con procesos log-estables

We report the participation level, we pricing a first generation's European call options on the Eurostoxx structured product, when returns’ uncertainty is modeled by log-stable processes, we present the basic statistics of the index's returns, we estimate the α-estable parameters, and we compare the structured products pricing by the both log-stable and log-Gaussian models using inputs of the debt markets. We conclude that investors get higher returns than debt markets using both models and returns’ differences depend of the participation level and the maturity.     

Play Hard,Shirk Hard? The Effect of Bar Hours Regulation on Worker Absence

The regulation of alcohol availability has the potential to influence worker productivity. This paper uses legislative changes in bar opening hours to provide a potential quasi‐natural experiment of the effect of alcohol availability on working effort, focusing on worker absenteeism. We examine two recent policy changes, one in England/Wales and one in Spain that increased and decreased opening hours respectively. We demonstrate a robust positive causal link between opening hours and absenteeism, although short‐lived for Spain. The effect is long lasting for the UK where we provide evidence which suggests that increased alcohol consumption is a key mechanism.     

The Legacy of Mexico's Agrarian Counter‐Reforms: Reinforcing Social Hierarchies in Calakmul,Campeche

In this paper, we examine how Mexico's 1992 counter‐reforms reinforced social hierarchies between two ‘classes’ of residents within three ejidos in an agricultural frontier in Campeche. We carried out qualitative research with 94 ejidatarios, 92 pobladores and 13 government officials. Our research shows that the reforms cemented the second‐class status of pobladores, as their access to land, natural resources such as firewood and governmental subsidies is now even more contested. Ejidal residents have responded to these tensions by invoking various conceptions of citizenship to press for different forms of justice. Ejidatarios seek to enforce their legal prerogatives by advocating a tiered citizenship, inflected with aspects of ‘market citizenship’, in which pobladores have less access to resources and voice. Pobladores seek inclusion in the ejido via a cultural model of citizenship built around a ‘civil sociality’. Despite this generalization, both groups also selectively move between and combine these citizenship frameworks to advance their claims.     

The effect of private high school education on the college trajectory

We use the National Education Longitudinal Study (NELS) to estimate the effect of private secondary schooling on the average college trajectory of a student in the United States, examining college enrollment and degree attainment across the private and public sectors. We provide the first estimates of the effect of private schooling on college degree attainment using the most recent NELS survey. To account for potential non-random selection we exploit the variation in the grade spans of the students’ middle schools. Results indicate that private schooling has a significant, positive effect on college enrollment and degree attainment. The effect on college enrollment diminishes with time, suggesting that private schools influence degree attainment by getting students to college sooner.     

Time allocation during higher education: A study of Brazilian,French, and Spanish students

Conclusion The results we present enable us to highlight common features and disparities in the way students from the three countries organize their time. While the lecture attendance time varies little from one country to another, it is different for other elements of time use. The Spaniards in particular seem to spend more time on personal work and the Brazilians more often have paid employment. The initial comparison should however be regarded as provisional in that no systematic correlation was made with educational policies in each country. Certainly, the lack of grants system in Brazil is linked to the significant amount of available time spent on salaried work but it would be advisable to include elements allowing us to link time allocation to the inherent productivity of the educational systems (drop-out rate, repetition rate, time necessary to graduate) as well as to their administrative organization.     

Dynamic capabilities for service innovation: conceptualization and measurement

Although the development of new services is becoming a major concern for firms throughout the entire economy, there is only little insight in the organizational antecedents of service innovation. It is widely acknowledged that engaging in R&D is relatively uncommon for service providers, but there are also indications that the R&D concept is poorly applicable to service innovation in the first place. Therefore, attention is shifting toward the actual capabilities that allow a firm to source ideas and convert them into marketable service propositions. This paper provides the operationalization of a set of dynamic service innovation capabilities (DSICs) that is general enough to be relevant across different sectoral contexts. While the selected framework is found to consolidate earlier works on the specificities of service innovation, it also captures broad insights on the evolutionary properties of the creation of novel solutions. Thereby, it exemplifies how DSICs can be conceptualized according to the so‐called synthesis approach to service innovation. We operationalize a refined version of such DSICs and develop a measurement scale, using two multi‐industry subsamples from a dataset of 391 Dutch firms. The measured capabilities are found to correlate to different extents with performance measures. Our main contribution, a validated scale for five complementary DSICs, opens the way to comparative analyses regarding firm abilities for creating innovative services.     

Mean residual life functions of finite mixtures,order statistics and coherent systems

We study properties of the mean residual life functions of finite mixtures. Specifically, we study ordering properties, monotonicity and the limiting behaviour. We show, under some mild conditions, that the limiting behaviour is similar to that of the strongest member (in the mean residual life order) of the mixture. We also consider the case of negative mixtures (i.e., mixtures with some negative coefficients) which is applied to study the behaviour of the mean residual life of order statistics and coherent systems with possibly dependent components. Partially Supported by Ministerio de Ciencia y Tecnologí a under grant BFM2003-02947 and Fundación Séneca under grant 00698/PI/04.     

A Two-Component Compliance and Ethics Program Model: An Empirical Application to Chilean Corporations

The rise of ethical scandals in the business world urged corporations to allocate time and resources to emphasize the ethical behavior of their managers and employees. The Model of Ethical Behavior in this article has three main assumptions: (1) the institutionalization of a Compliance and Ethics Program Model is done in terms of just two components: one Explicit and the other Implicit, (2) both components have a significant and direct influence over the ethical behavior of employees, which is represented in the model by two variables: Value Consistency and Presence of Ethical Conflicts, and (3) proper ethical behavior is perceived by employees to have a positive impact over the economic results of the firm. Reliable scales are developed to measure all these variables from the data collected by the “Barómetro de Valores y Ética Empresarial^©,” a survey applied in 2009 to 12,321 employees from 54 Chilean corporations. The empirical analysis showed that there are three very distinctive components in the Presence of Ethical Conflicts variable: (1) what the company does that affects the employee, (2) what the company does that affects other people, and (3) what the employee does that affects the company. Finally, the Explicit and Implicit components of a Compliance and Ethics Program are shown to have a significant and positive impact over: (1) Value Consistency in employees’ behavior; (2) the Presence of Ethical Conflicts in organizations; and (3) the perceived importance of ethics as a key factor to improve economic performance.