The Critical Point of Unoriented Random Surfaces with a Non-Even Potential

The discrete model of the real symmetric one-matrix ensemble is analyzed with a cubic interaction. The partition function is found to satisfy a recursion relation that solves the model. The double-scaling limit of the recursion relation leads to a Miura transformation relating the contributions to the free energy coming from oriented and unoriented random surfaces. This transformation is the same kind as found with a cuartic interaction.Comment: 20p (Frontpage included

The Correlated Block Renormalization Group

We formulate the standard real-space renormalization group method in a way which takes into account the correlation between blocks. This is achieved in a dynamical way by means of operators which reflect the influence on a given block of its neighbours. We illustrate our method in the example of the tight-binding model in 1D and 2D for various types of boundary conditions.Comment: LATEX file, 18 pages, 7 figures available upon reques

Input cost, capacity utilization and substitution in the short run

This article studies the behavior of input cost shares in an environment where labor is costly to adjust, materials can be adjusted at no cost and capital is fixed. A model relating cost shares with relative prices and adjustment costs is proposed, allowing joint estimation of the elasticity of substitution and the adjustment cost function, which is an unknown function of the utilization capacity. Based on a panel of more than 700 manufacturing firms, we find evidence of strong input share variations according to the degree of capacity utilization. The estimated shapes of adjustment costs curves of labor are in agreement with our theoretical model, and we obtain sensible elasticities of substitution estimates. Based on such estimates, we find evidence of a negative (positive) bias in downturns (recoveries) in conventional productivity growth measures

Planta fotovoltaica flotante

El objetivo de este proyecto era proponer un diseño de una planta fotovoltaica flotante no solo funcional, sino también económicamente rentable en un país con unas condiciones climáticas adversas para la energía solar como es Finlandia. En esta memoria se pueden encontrar los principales hallazgos en múltiples campos como localización, tipos de paneles, diseño de la estructura flotante o técnicas para mejorar el rendimiento de los paneles. A continuación se presenta un diseño final al que se ha llegado mediante un proceso iterativo en el que se descartan las opciones que presentan mayores complicaciones o son sencillamente inviables. En la parte final, se exponen un estudio económico y un estudio medioambiental que concluyen que el diseño es viable en ambos aspectos. Por tanto, la energía fotovoltaica instalada en la superficie de lagos puede ser de ayuda en la transición a un modelo energético limpio y renovable en FinlandiaThis Final Report is the culmination of a four month long design study on floating solar panel park feasibility in Vaasa, Finland. The Floating Ideas Team was tasked with coming up with a design that would not only work, but also make a profit. The team focused a lot of time on initial research, an iterative design process, and experiments to gather information that could not be found during the research phase. In this report, one can expect to find the major findings from research in many different areas such as location, panel design, flotation design, cooling techniques, and efficiency adding techniques. The first takeaway is that implementing floating solar parks in Finland would require adding efficiency techniques such as mirrors or concentrators. Second, how the panels are placed means a lot in a location so far north. Placing the panels far away from each other and horizontally will reduce the negative impact of shadows. And third, the rotation of the structure is important in increasing efficiency. Multiple axis tracking is not necessary, but tracking in the vertical axis can add a 50% increase in power generated. This research then lead into the defining of four initial designs which were eventually paired down into one. The largest factors leading to the change in design were the combination of rotation and anchoring methods, the flotation structure, and the structure required hold the panel modules together. In the end, the final design is a modular circular design with panels and mirrors to help add efficiency, approximately 37%. From there, an economic and environmental feasibility study was done and for both, this design was deemed feasible for Finland. With the design, detailed in this report, it would be possible to implement this and make a profit off of it, leading the team to believe that this should be implemented in places looking for alternatives for renewable energy production.Departamento de Tecnología ElectrónicaGrado en Ingeniería Eléctric

Innovation Management in Iberdrola

Innovation is Iberdrola’s main tool to guarantee its sustainability, efficiency and competitiveness. The model in Iberdrola is decentralised because the process is carried out independently in each Business Unit with support and coordination from the Innovation Department and open innovation because it seeks to involve Group technology suppliers such as universities, technology centres and equipment manufacturers in the innovation process. Research, Development and Innovation efforts comprise three main components: Efficiency: optimising operations, managing the life of facilities and equipment, bringing down operating and maintenance costs and reducing the environmental impact. New products and services to meet customer needs through digitalisation, automation and tailored solutions. Disruptive technologies and business models to tackle future energy challenges. The Company has organised its R&D Management System so that the Innovation Department can provide the Business Units with a global model, since we believe that there should be a single, standard and systematic innovation process for the entire organisation. Thanks to the commitment with Innovation, Iberdrola has positioned as a world leader in the offshore area, where it develops the most advanced and innovative projects. Wikinger Offshore wind farm is an emblematic project for Iberdrola, the symbol of Iberdrola’s commitment to innovation, sustainability and internationalisation

Analysis, design and implementation of the game Fútbol en papel and application and comparison of some classical and bio-inspired artificial intelligence techniques to generate automatic controllers

El objetivo principal de este Trabajo Fin de Grado es implementar una versión del juego Fútbol en papel en Java y realizar un estudio y comparativa entre las técnicas clásicas de Inteligencia Artificial en juegos de estrategia por turnos y técnicas inspiradas en la Naturaleza. Además, se analizará la complejidad de este dominio (juego Fútbol en papel) y se mostrará una visión general de las técnicas usadas en juegos de estrategia por turnos.Ingeniería Informátic