Assessing the quality of alternative energy sources: Energy Return On the Investment (EROI), the metabolic pattern of societies and energy statistics

This paper presents an initial challenge to tackle the every so "tricky" points encountered when dealing with energy accounting, and thereafter illustrates how such a system of accounting can be used when assessing for the metabolic changes in societies. The paper is divided in four main sections. The first three, present a general discussion on the main issues encountered when conducting energy analyses. The last section, subsequently, combines this heuristic approach to the actual formalization of it, in quantitative terms, for the analysis of possible energy scenarios. Section one covers the broader issue of how to account for the relevant categories used when accounting for Joules of energy; emphasizing on the clear distinction between Primary Energy Sources (PES) (which are the physical exploited entities that are used to derive useable energy forms (energy carriers)) and Energy Carriers (EC) (the actual useful energy that is transmitted for the appropriate end uses within a society). Section two sheds light on the concept of Energy Return on Investment (EROI). Here, it is emphasized that, there must already be a certain amount of energy carriers available to be able to extract/exploit Primary Energy Sources to thereafter generate a net supply of energy carriers. It is pointed out that this current trend of intense energy supply has only been possible to the great use and dependence on fossil energy. Section three follows up on the discussion of EROI, indicating that a single numeric indicator such as an output/input ratio is not sufficient in assessing for the performance of energetic systems. Rather an integrated approach that incorporates (i) how big the net supply of Joules of EC can be, given an amount of extracted PES (the external constraints); (ii) how much EC needs to be invested to extract an amount of PES; and (iii) the power level that it takes for both processes to succeed, is underlined. Section four, ultimately, puts the theoretical concepts at play, assessing for how the metabolic performances of societies can be accounted for within this analytical framework.

Testing, not modelling, the impact of cohesion support: a theoretical framework and some preliminary results for the Spanish regions

This paper develops a simple model that can be used to estimate the effectiveness of Cohesion expenditure relative to similar but unsubsidized projects, thereby making it possible to explicitly test an important assumption that is often implicit in estimates of the impact of Cohesion policies. Some preliminary results are reported for the case of infrastructure investment in the Spanish regions.

The Role of model uncertainty and learning in the U.S. postwar policy response to oil prices

This paper studies optimal monetary policy in a framework that explicitly accounts for policymakers' uncertainty about the channels of transmission of oil prices into the economy. More specfically, I examine the robust response to the real price of oil that US monetary authorities would have been recommended to implement in the period 1970 2009; had they used the approach proposed by Cogley and Sargent (2005b) to incorporate model uncertainty and learning into policy decisions. In this context, I investigate the extent to which regulator' changing beliefs over different models of the economy play a role in the policy selection process. The main conclusion of this work is that, in the specific environment under analysis, one of the underlying models dominates the optimal interest rate response to oil prices. This result persists even when alternative assumptions on the model's priors change the pattern of the relative posterior probabilities, and can thus be attributed to the presence of model uncertainty itself.

Party competition in regional elections: a framework for analysis

Whilst scholars have long recognised that processes of decentralisation create new regional arenas where distinct patterns of party competition are likely to emerge, there has been little systematic analysis of the dynamics of such competition. This working paper thus proposes a framework for analysing party competition between regional branches of state-wide parties, and autonomist parties, in regional arenas. Firstly, the different strategies political parties may adopt in response to their perceptions of voter preferences and to the strategies pursued by their competitors are identified. Secondly, different factors that impact on parties' strategic choices, and which may constrain a party's ability to select electorally optimal strategies in a given political context, are proposed.

Creació d'un framework per aplicacions web amb la plataforma .NET

Hi ha moltes empreses que fan aplicacions de gestió Web. Una d’aquestes empreses és per la que s’ha fet el projecte. El problema és que tenen molts projectes per desenvolupar, per tant van decidir d’implementar un conjunt d’eines amb l’objectiu de facilitar la implementació de les aplicacions als programadors. S’ha desenvolupat una llibreria .dll, que conté aquestes noves eines. També s’ha utilitzat codi JavaScript i CSS per tal d’implementar alguna funcionalitat i donar una presentació amb aquestes noves eines.

Linear Aggregation In The Social Accounting Matrix Framework

In economic literature, information deficiencies and computational complexities have traditionally been solved through the aggregation of agents and institutions. In inputoutput modelling, researchers have been interested in the aggregation problem since the beginning of 1950s. Extending the conventional input-output aggregation approach to the social accounting matrix (SAM) models may help to identify the effects caused by the information problems and data deficiencies that usually appear in the SAM framework. This paper develops the theory of aggregation and applies it to the social accounting matrix model of multipliers. First, we define the concept of linear aggregation in a SAM database context. Second, we define the aggregated partitioned matrices of multipliers which are characteristic of the SAM approach. Third, we extend the analysis to other related concepts, such as aggregation bias and consistency in aggregation. Finally, we provide an illustrative example that shows the effects of aggregating a social accounting matrix model.

A way to play bankruptcy problems.

The commitment among agents has always been a difficult task, especially when they have to decide how to distribute the available amount of a scarce resource among all. On the one hand, there are a multiplicity of possible ways for assigning the available amount; and, on the other hand, each agent is going to propose that distribution which provides her the highest possible award. In this paper, with the purpose of making this agreement easier, firstly we use two different sets of basic properties, called Commonly Accepted Equity Principles, to delimit what agents can propose as reasonable allocations. Secondly, we extend the results obtained by Chun (1989) and Herrero (2003), obtaining new characterizations of old and well known bankruptcy rules. Finally, using the fact that bankruptcy problems can be analyzed from awards and losses, we define a mechanism which provides a new justification of the convex combinations of bankruptcy rules. Keywords: Bankruptcy problems, Unanimous Concessions procedure, Diminishing Claims mechanism, Piniles’ rule, Constrained Egalitarian rule. JEL classification: C71, D63, D71.

Catalonia’s participation in calls of the EU 7th Framework Programme for RTD. Period 2007-2009

English translation of the Executive summary of the report “Catalonia’s participation in calls of the EU 7th Framework Programme for RTD. Period 2007-2009” drawn up by researchers of the AQR Research Group – Research Institute of Applied Economics (IREA) of the University of Barcelona. It aims to find out the reality of the Catalonia’s participation in the EU 7th Framework Programme, the main European financial instrument for research during the period 2007-2009.

Disseny i implementació d'un marc de treball (framework) de presentació per aplicacions J2EE : Jewel Framework

El present projecte tracta sobre el desenvolupament d'un marc de treball o framework per la capa de presentació d'aplicacions J2EE.En un primer bloc, s'analitzen els frameworks més utilitzats al món empresarial a dia d'avui: Struts 2, Spring MVC i JavaServer Faces. S'estudia com funcionen i les característiques principals de cada un, comparant-les per veure quines són comuns a tots i es consideren imprescindibles per un framework d'aquest tipus. A més, es fa un anàlisi exhaustiu dels patrons J2EE i les bones pràctiques que poden aportar al projecte.El segon bloc del projecte és el desenvolupament de Jewel Framework, el marc de treball que s'ha creat. Primer, s'analitza quines són les funcionalitats que ha de complir el framework i es fa un disseny de l'arquitectura i estructura que segueix. Després, s'implementa seguint el disseny i tenint cura que es compleixin tots els requisits, tant funcionals com de qualitat del producte. Finalment, es dissenya i desenvolupa una aplicació d'exemple que demostra la usabilitat i bon funcionament de Jewel.

Virtual Camarero : desarrollo de aplicaciones departamentales con .NET Framework 4.0

El Virtual Camarero es un proyecto de final de carrera realizado con .NET. Consiste en una aplicación para terminal táctil para poder realizar pedidos en un bar o restaurante desde la mesa de un local. Sin la necesidad de que el camarero venga a pedir lo que se quiere tomar.

Desarrollo de aplicaciones departamentales con .NET Framework 4.0

Proyecto de fin de carrera haciendo uso de WPF para el desarrollo de una aplicación departamental.

ServEngine : Framework pel desenvolupament de serveis en línia

En aquest projecte es desenvoluparà ServEngine, un framework per al desenvolupament de serveis de portals, comunitats virtuals i sistemes de comerç electrònic basat en el patró MVC i, com s'elegirà més endavant després d'un procés d'anàlisi i comparació, utilitzant Struts com a base de desenvolupament.

Disseny i implementació d'un marc de treball de presentació amb XML per a aplicacions J2EE a partir del Framework Struts

L'objectiu principal d'aquest projecte és la separació total dels rols de programador i de dissenyador de vistes en el disseny d'aplicacions distribuïdes fetes mitjançant tecnologia J2EE, i també el suport d'una sola aplicació a diferents tipus de client i idiomes alhora, sense la necessitat de codi extra o específic per a aconseguir-ho.

Generació automàtica d'una solució JEE (JPA + EJB + JSF) basada en el framework AndroMDA

En aquest projecte s'utilitzarà el framework AndroMDA per construir un programari que permeti generar automàticament a partir d'un model UML simple una aplicació JEE.

Framework para la capa de presentación de aplicaciones web

El framework dissenyat, denominat magis, ajuda als desenvolupadors organitzant la presentació de continguts, l'accés a les funcions i serveis de negoci, el flux de pàgines, el processament de formularis, el maneig d'errors i la gestió d'estat.