In a Grid Computing scenario, where the market players are dynamic; traditional assumptions for establishing and evaluating trust, do not hold good anymore. There are two different methods for handling access controls to the resources in grids: first by using policy based approach; where logical rules and verifiable properties are encoded in signed credentials and second by using reputation bas...

In an environment where managers’ability to generate pro…ts changes stochastically over time, we characterize the optimal turnover policy for a …rm hiring a succession of managers. The focus is on the interaction between the compensation scheme used to incentivize the managers’e¤ort and the retention policy used to screen the managers’types and induce the desired turnover. Our key positive resu...

We examine the role of managerial talent and its interaction with practices in determining firm performance. build a matched firm-director panel dataset for universe limited liability companies Italy, tracking individuals across different firms over time. define as management's capacity to boost firms' total factor productivity, estimated using two-way fixed effects model. Combining data survey...

In a virtual society, which consists of several autonomous agents, trust helps agents to deal with the openness of the system by identifying the best agents capable of performing a specific task, or achieving a special goal. In this paper, we introduce ROSTAM, a new approach for agent trust management based on the theory of Rough Sets. ROSTAM is a generic trust management framework that can be ...

Though research on the Semantic Web has progressed at a steady pace, its promise has yet to be realized. One major difficulty is that, by its very nature, the Semantic Web is a large, uncensored system to which anyone may contribute. This raises the question of how much credence to give each source. We cannot expect each user to know the trustworthiness of each source, nor would we want to assi...

This study has been conducted with the aim of surveying the barriers and challenges of research in universities from the perspective of faculty members (Islamic Azad and Payam-e Nour, Razi, Medical Sciences) in Kermanshah done. Questionnaire being used in this research is Barriers and challenges from the perspective of research at universities Retrieved from master thesis, it was based on Liker...

Desde hace tres décadas los Contact Centers son el medio más eficiente para gestionar las comunicaciones directas entre empresas y clientes. Esta comunicación no es una mera transmisión de mensajes, sino que implica la constitución ciertos compromisos agentes (visibles en sus modos hacer ser), claves al cliente. Nos preguntamos ¿qué elementos caracterizan dicha comunicación? procesos ensamblan?...