La organización de los juegos olímpicos como elemento de configuración de regímenes urbanos: Barcelona 1992 como estudio de caso

The games were an opportunity for Spain to show to the world as a modern, wealthy and democratic country of Western Europe, that successfully accomplished 15 years of political transition and dealt with identity issues. But the games also were a window of opportunity for the complete “reinvention” of Barcelona at all levels (political, economical, social and urbanistic) and laid the foundations for the development of the city in the next decades. This research argues that this process of “reinvention of the city” can be explained for three factors: 1) A policy coalition involving key economic and social actors under the leadership of Barcelona‟s Major, which led to a new urban regime. 2) An intergovernmental game that privileged the cooperation between the federal and urban government, as well as the international sports institutions 3) An understanding of the Olympic infrastructures not only as a guarantee for the success of the event, but as the starting point for a new model of urban and identity development regarding to the XXI siècle. The main objective of the research is to analyze the possible application of urban regime approach to different local government systems of the US by analyzing a case study, Barcelona...

A Hardware Implementation of a Run-Time Scheduler for Reconfigurable Systems

New generation embedded systems demand high performance, efficiency and flexibility. Reconfigurable hardware can provide all these features. However the costly reconfiguration process and the lack of management support have prevented a broader use of these resources. To solve these issues we have developed a scheduler that deals with task-graphs at run-time, steering its execution in the reconfigurable resources while carrying out both prefetch and replacement techniques that cooperate to hide most of the reconfiguration delays. In our scheduling environment task-graphs are analyzed at design-time to extract useful information. This information is used at run-time to obtain near-optimal schedules, escaping from local-optimum decisions, while only carrying out simple computations. Moreover, we have developed a hardware implementation of the scheduler that applies all the optimization techniques while introducing a delay of only a few clock cycles. In the experiments our scheduler clearly outperforms conventional run-time schedulers based on As-Soon-As-Possible techniques. In addition, our replacement policy, specially designed for reconfigurable systems, achieves almost optimal results both regarding reuse and performance.

Design of maintenance structures for rural electrification with solar home systems. The case of the Moroccan program.

n decentralised rural electrification through solar home systems, private companies and promoting institutions are faced with the problem of deploying maintenance structures to operate and guarantee the service of the solar systems for long periods (ten years or more). The problems linked to decentralisation, such as the dispersion of dwellings, difficult access and maintenance needs, makes it an arduous task. This paper proposes an innovative design tool created ad hoc for photovoltaic rural electrification based on a real photovoltaic rural electrification program in Morocco as a special case study. The tool is developed from a mathematical model comprising a set of decision variables (location, transport, etc.) that must meet certain constraints and whose optimisation criterion is the minimum cost of the operation and maintenance activity assuming an established quality of service. The main output of the model is the overall cost of the maintenance structure. The best location for the local maintenance headquarters and warehouses in a given region is established, as are the number of maintenance technicians and vehicles required.