Prices versus exams as strategic instruments for competing universities

In this paper we investigate the optimal choice of prices and/or exams by universities in the presence of credit constraints. We first compare the optimal behavior of a public, welfare maximizing, monopoly and a private, profit maximizing, monopoly. Then we model competition between a public and a private institution and investigate the new role of exams/prices in this environment. We find that, under certain circumstances, the public university may have an interest to raise tuition fees from minimum levels if it cares for global welfare. This will be the case provided that (i) the private institution has higher quality and uses only prices to select applicants, or (ii) the private institution has lower quality and uses also exams to select students. When this is the case, there are efficiency grounds for raising public prices

Does it pay to be socially responsible? Evidence from spanish retail banking sector

This paper presents a theoretical and empirical analysis of strategic competition in retail banking when some of the financial firms are non-profit organisations that invest in social activities. Banking literature about competition is fairly large, but the strategic interaction between profit maximizing and non profit maximizers has not been extensively analysed except for Purroy and Salas (1999). In this paper, a completely different approach is taken. An adaptation of Hotelling’s two stage model of spatial competition is developed to take into account consumer perceptions respect to the two different types of financial institutions. The empirical analysis confirms that consumers take into account other features different from the price, such as social contribution or closer service to make a deposit or mortgage decision. These conclusions are of interest in the debate about a firm’s social or ethical activities. It is shown that if consumers value social activities, firms can improv

La adolescencia: retos para la investigación y para la sociedad europea de cara al sigol XXI

A lo largo de la última década, la adolescencia ha sido un tema de discusión política en distintos espacios europeos al más alto nivel. En una sociedad aceleradamente cambiante se percibe que la adecuada socialización de las generaciones más jóvenes constituye un reto socio-histórico que nos afecta a todos. Los cambios en que estamos sumergidos son tan plurales (demográficos, sociales, tecnológicos, económicos, políticos, etc.) que generan un amplísimo frente de nuevos dilemas éticos. La opinión de los ciudadanos de la Unión Europea se muestra preocupada por nuevos valores y destaca la preferencia por la responsabilidad en coherencia con dicha situación cambiante. Todo este macrocontexto psicosocial viene planteando nuevos retos teóricos y de investigación a la comunidad científica. De hecho las ciencias humanas y sociales han empezado a desarrollar nuevas líneas de investigación para comprender mejor las nuevas relaciones entre adultos y adolescentes y las nuevas culturas que emergen entre estos últimos, impulsadas por nuevas aspiraciones sociales compartidas por grupos más o menos amplios de la población joven. El desarrollo de técnicas e instrumentos que nos permitan comprender mejor la perspectiva del adolescente se hace más evidente si analizamos su relación con las nuevas tecnologías de la información y la comunicación. Dichas tecnologías comportan nuevos riesgos, pero también nuevas oportunidades, entre las que destaca la posibilidad de establecer nuevas formas de relación. La motivación que muestran los más jóvenes por las nuevas tecnologías constituye un gran reto a los investigadores aplicados para sugerir formas de maximizar las potencialidades latentes

G+: Enhanced Traffic Grooming in WDM Mesh Networks using Lighttours

In this article, a new technique for grooming low-speed traffic demands into high-speed optical routes is proposed. This enhancement allows a transparent wavelength-routing switch (WRS) to aggregate traffic en route over existing optical routes without incurring expensive optical-electrical-optical (OEO) conversions. This implies that: a) an optical route may be considered as having more than one ingress node (all inline) and, b) traffic demands can partially use optical routes to reach their destination. The proposed optical routes are named "lighttours" since the traffic originating from different sources can be forwarded together in a single optical route, i.e., as taking a "tour" over different sources towards the same destination. The possibility of creating lighttours is the consequence of a novel WRS architecture proposed in this article, named "enhanced grooming" (G+). The ability to groom more traffic in the middle of a lighttour is achieved with the support of a simple optical device named lambda-monitor (previously introduced in the RingO project). In this article, we present the new WRS architecture and its advantages. To compare the advantages of lighttours with respect to classical lightpaths, an integer linear programming (ILP) model is proposed for the well-known multilayer problem: traffic grooming, routing and wavelength assignment The ILP model may be used for several objectives. However, this article focuses on two objectives: maximizing the network throughput, and minimizing the number of optical-electro-optical conversions used. Experiments show that G+ can route all the traffic using only half of the total OEO conversions needed by classical grooming. An heuristic is also proposed, aiming at achieving near optimal results in polynomial time