Now showing items 1-20 of 73
Linares Herreros, Mª Paz (Date of defense: 2014-04-24)
In terms of sustainability, traffic is currently a significant challenge for urban areas, where the pollution, congestion and accidents are negative externalities which have strongly impacted the health and economy of ...
Torné Santos, Josep María (Date of defense: 2013-12-20)
Traffic congestion is a major source of inefficiencies in metropolitan freeways (e.g. productivity loss, energy waste, pollutant emissions, among other externalities). Active traffic management (ATM) strategies are used ...
Ghangale, Dhananjay (Date of defense: 2019-07-19)
This thesis presents a methodology for assessing induced ground-borne vibration due to Underground railway infrastructures in the context of an urban environment. The methodology is based on a comprehensive numerical ...
Rioja San Martín, Oscar (Date of defense: 2015-07-10)
In this research, an overnight parcel logistics company's (hereby referred to as OPLC) capillary distribution network will be modelled by stochastic techniques. Specifically, the capillary distribution networks this parcel ...
Chaudhuri, Somnath (Date of defense: 2023-06-09)
Spatial statistics is traditionally based on stationary models like Matérn fields. However, applying stationary models to complex spatial regions having physical barriers like islands or coastal areas can result in ...
Ribes Ardanuy, Josep Maria (Date of defense: 2012-10-03)
The object of this thesis is to analyze the evolution of railway interoperability and safety in Europe in the period 1991-2011. This pretends to assess what has been the legislative process at EU level in the last 20 ...
Pérez Diez, Fernando (Date of defense: 2019-04-05)
MOBILITY provides accessibility to people, goods, services and information, favoring the implementation of socio-economic activities. The more efficient mobility becomes, the greater human development and quality of life ...
Grzybwska, Hanna (Date of defense: 2012-06-08)
The urban network is a highly dynamic system. Thus, a modern and efficient fleet management in urban areas should account for dynamics of traffic conditions, variability in travel times, changes in demand and fleet ...
Badia Rodriguez, Hugo (Date of defense: 2016-12-19)
This thesis discusses which transit network structure is the best option to serve urban mobility. As a consequence of the evolution of urban form, cities have undergone a dispersion process of their activities. This fact ...
Martín Navarrete, Rocío (Date of defense: 2021-02-02)
The acoustic field inside a car cabin for low driving speeds is dominated by the engine or the tire noise. However, for mid to high velocities, the noise generated by the interaction of the car with the external air becomes ...
López Ramos, Francisco (Date of defense: 2014-02-24)
This thesis develops mathematical programming models which integrate network design (ND) and line frequency setting (LFS) phases. These appear in transport planning studies that extend an existing urban public transportation ...
Teixeira, Paulo Fonseca (Date of defense: 2004-01-21)
La experiencia adquirida en las líneas de alta velocidad en explotación comercial ha puesto de relieve la importancia de la rigidez vertical de la vía y en particular la conveniencia de limitar su magnitud para minimizar ...
Martín Cañizares, María del Pilar (Date of defense: 2015-11-16)
Building a high-speed line requires significant investment and its design strongly influences the operation, with the aggravating circumstance that subsequent modifications not initially planned are not always feasible at ...
García Álvarez, Alberto (Date of defense: 2012-04-13)
The thesis analyses the effect of an increase in speed on energy consumption, pollutant emissions and railway operating costs. Besides focusing on the direct consequences of speed variation, the analysis also considers ...
Mas i Peiró, Jordi (Date of defense: 2023-04-20)
En els darrers anys ha augmentat l'ús de vehicles elèctrics a la indústria de l'automòbil. Per fabricar aquests vehicles calen matèries primeres crítiques, entre les quals destaquen el cobalt, el níquel, el liti i el ...
Morales Vilches, Anna Belén (Date of defense: 2015-07-23)
El desarrollo de la tecnología fotovoltaica de silicio cristalino ha llegado al punto en que la mejora de los dispositivos pasa, no tanto por un aumento de la eficiencia, como por la reducción del coste de fabricación. En ...
Roca Enrich, Joan (Date of defense: 2006-02-10)
Els robots caminadors presenten alguns avantatges respecte als tradicionals robots mòbils amb rodes, que es resumeixen en major mobilitat i capacitat de superació d'obstacles. Un dels principals problemes actuals en el ...
Jiménez Meroño, Enrique (Date of defense: 2023-11-15)
(English) This thesis provides tools, based on mathematical modelling, for the analysis, optimization and simulation, of vehicle-sharing systems. The thesis addresses various implementation levels of such systems, from ...
García Fernández, Luis Amable (Date of defense: 2000-07-20)
El control de Tráfico Urbano es altamento complejo y dinámico: depende de la cantidad, tipo y calidad de los datos recibidos, de las previsiones de datos a recibir, del comportamiento del tráfico (actual, pasado y en ...
Cabrera Jiménez, Richard Emmanuel (Date of defense: 2024-01-29)
Aquesta tesi pretén abordar els reptes emergents al sector del transport i facilitar una transició energètica sostenible proporcionant orientacions per a unes polítiques de sostenibilitat eficaces. Tot i els importants ...