Universitat Politècnica de Catalunya
Ara mostrant els elements 4701-4720 de 5539
Este trabajo resuelve el problema de gran interés para la industria aeronáutica: el cálculo de la sección recta (RCS) de blancos radar complejos en tiempo real. Para ello basta una estación de trabajo con un acelerador ...
The PhD project, entitled "Second harmonic generation in disordered nonlinear crystals: application to ultra-short laser pulse characterization", is devoted to the study of second harmonic generation in nonlinear ferroelectric ...
Photonic crystals emerged at the end of the last decade as a new frame to control the interaction between radiation and matter. The potential advances that such structures could report in photonics technology has lead to ...
The mobility of the future undoubtedly involves the electrification of vehicles. The increase in social awareness towards a reduction in CO2 emissions, together with the introduction of new laws regulating them, has finally ...
(English) Air pollutants can be classed as either primary or secondary pollutants. Primary air pollutants are those that are directly emitted into the atmosphere, whereas secondary air pollutants are generated in the ...
Structured Peer-to-Peer (P2P) networks were proposed to solve routing problems of big distributed infrastructures. But the research community has been questioning their security for years. Most prior work in security ...
1. CONTEXTO<br/><br/>1.1. MANET<br/><br/>MANET (Mobile and Ad hoc NETworks) (Redes móviles sin cables) son redes formadas por nodos móviles. Se comunican sin cables i lo hacen de manera 'ad hoc'. En este tipo de redes, los ...
Peer-to-peer applications enable a group of users to create a communications framework from scratch without the need of a central service provider. This is achievable via the aggregation of resources each one of them ...
Nowadays, by increasing the number of connected devices to Internet rapidly, cloud computing cannot handle the real-time processing. Therefore, fog computing was emerged for providing data processing, filtering, aggregating, ...
P2PSIP (Peer-to-Peer Session Initiation Protocol) is a protocol developed by the IETF (Internet Engineering Task Force) for the establishment, completion and modi¿cation of communication sessions that emerges as a complement ...
Nowadays, the great diffusion of advanced devices, such as smart-phones, has shown that there is a growing trend to rely on new technologies to generate and/or support progress; the society is clearly ready to trust on ...
There are new mechanisms to sequence and process the genomic code, discovering thus diagnostic tools and treatments. The file for a sequenced genome can reach hundreds of gigabytes. Thus, for further studies, we need new ...
Wave storms and river inputs have been found to be the dominant forcing mechanism of sediment transport in continental shelves dominated by medium to large rivers around the world (e.g. Drake and Cacchione, 1985; Sherwood ...
The discharge of acid mine drainage into a water reservoir may seriously affect the water quality. In this setting, sediment is commonly thought to act as a sink for pollutants. However, redox oscillations in the bottom ...
(English) Turbidity currents in reservoirs are of strong scientific interest because they can be responsible for the contribution of large amounts of fine sediments that can cause early sediment filling. The case study ...
The main objective of this thesis is to contribute to the prevention and control of the cardiovascular risk, hydration state and nutritional state in dialysis patients using non-invasive electrical impedance measurements. ...
En los últimos años se han estado utilizando medios electrónicos para automatizar y hacer más eficientes los diferentes procesos de una elección. Aún cuando esta automatización se ha presentado de manera gradual, el propósito ...
El estudio de arquitecturas de seguridad para redes de transmisión de datos adquiere cada día mayor importancia.<br/><br/>Por otra parte, es un hecho constatado que el mundo de las telecomunicaciones camina decididamente ...
Technology progress in both user devices and networks allows communications anytime and anywhere. New communication environments offer a wide range of possibilities to users, but also generate new threats. For this reason, ...
La presente tesis de enmarca dentro del área de la Seguridad de Comunicaciones. Concretamente, se estudian aquí mecanismos de seguridad adecuados a los entornos de Red de Área Local, proponiéndose y evaluándose un conjunto ...
