Repositório RCAAP
Architecture for a collaborative system based on hypermedia tools
This thesis reflects the experience carried out with the work developed during the last years in the Electronics and Telecommunications Department of the University of Aveiro with the participation in several national and international projects covering the hypermedia and computer supported collaborative work fields. (...)
1999
Pinto, Joaquim Manuel Henriques de Sousa Martins, Joaquim Arnaldo Carvalho
A new PACS model
In most hospitals, storage, distribution and presentation of medical images is based upon X-ray film. It allows a high quality image although cost and volume lead to conditioning it's use in storage and distribution of images. (...)
1999
Dias, Gonçalo Paiva Rafael, José Alberto
L’étranger
No summary/description provided
2016
Bénit, Ándré Bonnet, Dominique Borralho, Maria Luísa Malato Boudart, Laurence Cabral, Maria de Jesus Cermakian, Stéphane Gomes, Fernando Moreels, Isabelle Rachdi, Naïma Ríos Guardiola, Maria Gloria Robalo Cordeiro, Cristina Santos, Maria do Rosário Girão Ribeiro dos Schlossman, Béryl
Image reconstruction: methods of minimum dimension in the space domain
The scientific community has dedicated a lot of effort to the development and improvement of error-less methods for signal restoration. These methods are based on a priori knowledge of some characteristics of the signal, such as frequency band limitations, amplitude maxima and minima, time/space duration, etc. (...)
1999
Reis, Manuel José Cabral dos Santos Ferreira, Paulo Jorge dos Santos Gonçalves
Signal and image reconstruction: minimum dimension methods in the time and frequency domains
The reconstruction of signals and images is a common task in signal processing, with many applications. The deconvolution of signals is one of necessary steps to solve many inverse problem of practical importante, and tomography is an invaluable technique in medicine. Many other examples can be given. (...)
1999
Costa, Rui Jorge Ferreira da Ferreira, Paulo J. S. G.
Mobile communication systems: a comparative and evolutive study
As the "Mobile Telecommunications" is one of the branches of the communication systems that has been developing extraordinary in the last years, and whose future evolutions are likely to have economic and social implications so highly that will determine the development of societies, it was the aim of this dissertation to carry out a comparative and evolutive study of mobile communication systems, in order to facilitate the understanding of the different transformations and their implications. (...)
1999
Guimarães, Duarte Nuno Xavier Duarte, A. Manuel de Oliveira
Development of suitable tools for the evaluation of ATM systems performance
The work carried on during this M. Sc. Dissertation aimed essentially the identification study and development of an appropriate set of analytical and simulation tools that could help us to understand the functional mechanisms of ATM networks, to evaluate their performance when they are submitted to certain types of traffic, and to project and develop appropriate mechanisms to prevent and recover from traffic congestion situations. (...)
1999
Nogueira, António Manuel Duarte Duarte, A. Manuel de Oliveira Martins, Joaquim Arnaldo Carvalho
Specification and Design of an Integrated memory management unit for a MIMD distributed memory architecture
The remarkable developments in the micro-electronics field during the last decade, in terms of level of integration and complexity, has enabled the design of new applications and enhancements of existing electronic systems, either by adding new functionalities or by decreasing the circuit area and its power consumption. (...)
1999
Ferreira, Joaquim José de Castro Borges, António Rui Oliveira Silva
Management of distributed information systems
The experimental work within this dissertation aimed to implement the telematic infrastructure of Aveiro University in order to support a wide range of communication and information services, from the invaluable electronic mail to advanced services with real time video and sound. (...)
1999
Cozinheiro, Fernando Rocha, Nelson
An imagilogy computer-based system
O Sistema Informático de Imagiologia (SIIM) que vimos apresentar, deve poder acompanhar e contribuir nessas acções de flexibilidade e adaptação a novas situações permitindo, pela sua estrutura configurável, adaptar-se às necessidades actuais e a outras novas que se perspectivem. (...)
1999
Fonseca, José Carlos C. Martins da Rafael, José Alberto
Visual representtion of the articulatory model to study speech production
In this work we present an articulatory synthesiser which models the vocal tract apparatus with slowly varying physiological parameters (e.g. tongue body, lips, velum, etc). The articulatory distance model that is used was first developed by Mermelstein(l973). (...)
1999
Branco, António Alberto Lebre dos Santos Tomé, Ana Maria
Characterisation of an electromagnetic wave reflection on rough surfaces
This dissertation deals with propagation channel modelling, namely the characterisation of a diffuse reflection of an electromagnetic wave in a given surface. (...)
1999
Marques, Arlindo Manuel de Fontes Neves, José Carlos da Silva
A study for an integrated Audio/Video/Data system
In this work we present a study on an integrated Audio/Video/Data system, starting from a specific situation: the need of an audio-visual institution, to link their several diffusion stations and a data network with other new stations. (...)
1999
Ferreira, Paulo Alexandre Vaz, Francisco
Introduction to Pascal programming: conception and development of a computer assisted education application
The effective application to teaching of Information Technology, reached in the past years, can help to reduce some o f the problems that exist in the present educational system. With the computer, it is possible to develop interactive tools that can fulfil the empty space left by the absence of direct interaction between the teacher and the student, caused by the massification of the educational system. (...)
1999
Santos, Carlos Manuel das Neves Borges, António Rui
Design and implementation of an internet based teleproductics system
The improvement of tools for the Internet enables the emergence of new challenging fields of application of the global network. Une new promising field is Teleproductics that comprises the remote access and control of industrial, facilities through a telecommunications network such as the Internet. (...)
1999
Firmeza, João Paulo Namorado Ramos, Fernando M. S.
Multigigabit clock recovery
This dissertation purpose is the design and implementation of circuits to be used in the synchronization of high bit rate digital signals. At those rates clock recovery is done using an opne-loop structure, since the technology needed for developing closed-loop synchronisers is still not completely mature. (...)
1999
Lima, Mário José Neves de Rocha, José R. Ferreira da
Resource management on satellite-based mobile networks
Due to the explosive growth of mobile services, the spectrum scarceness and the high variability of mobile satellite traffic, the issues associated to the resource management in this class of systems assume a crucial importante aiming to reach the high standards of service quality required by the users. (...)
1999
Santos, Victor Daniel Neto Neves, José Carlos
Project and implementation of a WWW supported evaluation system
The growing popularisation of Undergraduate Courses arises new problems resulting from the difficult diffusion and actualisation of information (e.g., courseware) among students and the existing level of interaction between students and teachers. (...)
1999
Carvalhal, Carlos Rui Gouveia Rocha, Nelson
Insulaire
No summary/description provided
2016
Alves, Natália Guilhermina Oliveira Lameiras Amand, Émilie Batista Rodríguez, José Juan Collot, Michel Coutinho, Ana Paula Faria, Dominique Fougère, Éric Marques, Isabelle Simões Martins Coelho, Leonor Moniz, Ana Isabel Outeirinho, Maria de Fátima Pereira, Maria Eugénia Rey Mimoso‑Ruiz, Bernadette Santos, Maria do Rosário Girão Ribeiro dos Sarmiento Pérez, Marcos
A LAN audio broadcast system
In this work, are developed applications to broadcast high quality audio over local area networks. Some solutions are considered for the development platform and the adopted solution is presented. It is based on a PC with a CDROM player, an audio and a network card, and the applications are developed for Windows Operating system. (...)
1999
Moreira, Luis Vaz, Francisco