Universitat Politècnica de Catalunya
Mostrando ítems 4595-4614 de 5910
In many applications, one would like to perform calculations on smooth manifolds of dimension d embedded in a high-dimensional space of dimension D. Often, a continuous description of such manifold is not known, and instead ...
Les contribucions d’aquesta tesi s’emmarquen en la interacció home-computador en entorns de realitat virtual. Concretament, en la millora de tasques de selecció d’objectes tridimensionals. La selecció d’objectes és una ...
(English) In this thesis, we study Poisson Structures on Moduli Spaces and Group actions. In particular, we focus on b^m-symplectic structures that can be seen both as symplectic structures with singularities and a particular ...
In the next era of communications, where heterogeneous, asynchronous and ultra-low latency networks are drawn on the horizon, classical cryptography might be inadequate due to the excessive cost of maintaining a public-key ...
Las técnicas de Interferometría Diferencial se basan en la combinación de varias imágenes SAR con distinta separación temporal y permiten la recuperación de las componentes lineales y no-lineales del proceso de deformación ...
Radiocommunication systems have evolved significantly in recent years in order to meet present and future demands. Historically, time, frequency and more recently, spatial dimensions have been used to improve capacity and ...
While super-resolution microscopy has brought a significant improvement in nano-scale imaging of molecular assemblies in biological media, its extension to imaging molecular orientation using fluorescence anisotropy has ...
Carbon nanotube (CNT) mechanical resonators are unique systems because they combine remarkable mechanical properties with rich charge transport characteristics. Thanks to their intrinsically low-dimensional nature, their ...
The overarching research goal of this dissertation is to make theoretical and empirical contributions on the link between the polycentric spatial organization of agglomeration in metropolitan areas and its economic, social ...
En el marc del tractament de materials amb làser, el poliment de superfícies és una tècnica relativament recent i amb múltiples aplicacions. En aquesta tesi es tracta de l'aplicació d'aquesta tècnica sobre components de ...
El treball que es presenta en aquesta tesis incideix sobre aquest aspecte clau en les aplicacions amb feixos làser d'alta potència: com obtenir distribucions d'intensitat que permetin generar tractaments tèrmics uniformes. ...
The use of urban planning, design and management policies as a tool to prevent crime from a situational perspective, serves as a theoretical framework to analyze, explain and interpret the influence of urban regeneration ...
(English) Poly(lactic acid) (PLA) is a biobased, biodegradable and biocompatible polymer. Because of that, it is a polymer that generates a great interest in the research and development of new advanced materials. Among ...
In recent years, as a result of climate change, the interest in sustainable materials has increased dramatically. The replacement of compounds of petrochemical origin by bio-based has spread to all areas of chemistry. ...
(English) In recent years, new white and opaque PET bottles (PET-O) have appeared and are used for packaging dairy products. These bottles contain titanium dioxide (TiO2) particles to prevent deterioration of the packaged ...
(English) Zirconia ceramic is widely used in numerous fields, such as electronics, machinery, and biomedical applications, due to its excellent properties as chemical resistance, thermal stability, electrical resistance, ...
In the last decade, conductive polymers have received great interest in both scientific and technological levels due to the electroactive properties exhibited by these materials. For this reason, the main aim of this ...
The general objective of the thesis was to determinate the population dynamics of Meloidogyne on tomato and cucumber, the yield losses caused by the nematode and the effect of biologically-based management strategies to ...
(English) There is a myriad of microorganisms on Earth contributing to global biogeochemical cycles. In the surface ocean, the smallest microbes (picoplankton) are responsible for an important fraction of the total atmospheric ...
As the evolutionary end-point of most main-sequence stars, white dwarfs can be used to infer important properties concerning the formation and evolution of the different Galactic stellar populations. Population synthesis ...
