GROSSO-DE LA VEGA , Rafael

En esta tesis, dentro del marco de la logística urbana y la sostenibilidad, se presentan y se resuelven dos nuevas variantes de la familia de los Vehicle Routing Problem (VRP) además de una novedosa política de recogida de residuos sólidos basados en información en tiempo real del nivel de llenado de los contenedores. Los nuevos VRP, de los que...

The aim of this paper is to seek an answer to an specific question: how to make city logistics sustainable? This question in principle has no specific answer. By contrast, it could be answered in many and varied ways. Behind the search for some of these answers lies the development of a roadmap which this work aims to present. The research...

Because of its mathematical and computational components, operations research (OR) is not simple to teach or to learn, despite its innumerable industry applications. However, advanced OR is included in many graduate degrees related to industrial engineering, where students need these techniques to solve complex optimization problems. Faced with...

El reparto urbano de mercancías debe ser contemplado en relación con los tres ejes de la sostenibilidad: el económico, el social y el medioambiental. Dentro de los parámetros del desarrollo urbano sostenible, es importante conseguir una logística urbana sostenible y eficiente, lo cual es extremadamente complejo debido a la gran variedad de...

Road Freight transport is causing a number of social, environmental and economic negative impacts in many cities around the world.Therefore sustainable city logistics must be the solution to the problems of urban centers, with the main objective of researchers reduce these impacts, without penalizing the needs of cities. Cause of this several...

Choice design building based on D-error minimization can be accomplished either by using predefined β values or by assuming probabilistic distributions for them. Several mathematical techniques have been used for both approaches in the past, resulting in algorithms that obtain efficient designs, which guarantee the high quality of the...

The application of the principles of sustainability to the implementation of urban freight policies requires the estimation of all the costs and externalities involved. We focus here on the case of access time windows, which ban the access of freight vehicles to central urban areas in many European cities. Even though this measure seeks to...

El objetivo del trabajo desarrollado es la estimación de la función de fiabilidad de un transformador de potencia de una subestación eléctrica de media tensión. Para ello se ha realizado una estimación no paramétrica usándose tres estimadores diferentes: un estimador para sucesos recurrentes en presencia de correlación para el caso particular...

The presented work is done for a company that currently operates twenty lines of passenger transport in the metropolitan area of Seville. The planning of these was originally carried out manually, building routes and shifts in an Excel spreadsheet. In order to automate the process as much as possible. It was designed and implemented by a...

En la última década la universidad española ha sufrido una gran transformación debido al proceso de Bolonia, el cual buscaba acercar la Universidad a las necesidades sociales. Aun así, sigue existiendo un considerable gap entre los conocimientos adquiridos en las enseñanzas universitarias y las competencias reclamadas en el mercado laboral. Los...

This paper addresses the recyclable waste collection problem in urban areas. The work focuses on the recyclable glass bins collection, but with the peculiarity that these are provided with a device that sends fill level data daily to the control center. With this additional real time information we propose a collection policy that minimizes...