Studying the impact of co-authorship with external researchers:the case of research community in Portugal using social network analysis.

Project work presented as a partial requirement to obtain a Master Degree in Information Management

Specification of software architecture reconfiguration

In the past years, Software Architecture has attracted increased attention by academia and industry as the unifying concept to structure the design of complex systems. One particular research area deals with the possibility of reconfiguring architectures to adapt the systems they describe to new requirements. Reconfiguration amounts to adding and removing components and connections, and may have to occur without stopping the execution of the system being reconfigured. This work contributes to the formal description of such a process. Taking as a premise that a single formalism hardly ever satisfies all requirements in every situation, we present three approaches, each one with its own assumptions about the systems it can be applied to and with different advantages and disadvantages. Each approach is based on work of other researchers and has the aesthetic concern of changing as little as possible the original formalism, keeping its spirit. The first approach shows how a given reconfiguration can be specified in the same manner as the system it is applied to and in a way to be efficiently executed. The second approach explores the Chemical Abstract Machine, a formalism for rewriting multisets of terms, to describe architectures, computations, and reconfigurations in a uniform way. The last approach uses a UNITY-like parallel programming design language to describe computations, represents architectures by diagrams in the sense of Category Theory, and specifies reconfigurations by graph transformation rules.

Nouvelles données sur la datation des dépôts miocènes de l’Algarve (Portugal), et l’évolution géologique regionale

This paper presents a resume of the results achieved by researchers of the Centro de Estratigrafia e Paleobiologia da U. N. L. on the Neogene of Algarve, since 1977. The detailed study of several profiles as well as that af calcareous nannoplanton, planktonic foraminifera, ostracoda, fishes and mammals allowed to obtain data and correlation elements leading to a new interpretation of the Miocene of Algarve. It was possible to date and to characterize the following units: a) Carbonate formation of Lagos-Portimão, of marine facies, ascribed to the Lower Miocene (Aquitanian? and mainly Burdigalian), possibly attaining the Lower Langhian. b) Essentially arenaceous series of continental facies with a marine intercalation of Arrifão, Olhos de Água and Auramar Hotel beach, middle Miocene (Langhian-Serravallian) in age. c) Marine (tripoli, conglomerates, sands and limestones) deposits of Tunes-Mem Moniz, Ponte das Lavadeiras (Faro), Arroteia (Fuzeta) and Luz de Tavira, corresponding, at least partially, to the first part of the upper Miocene (Lower Tortonian). d) Cacela formation with three members: The lower member (conglomerates and sands), the middle (yellow silts) and the upper ones (gray silts), uppermost Tortonian and mainly Messinian in age. An interpretation of the tectonic and paleogeographic evolution of the portuguese littoral during the Miocene is also presented considering its insertion in the meridional part of the Peninsula (Guadalquivir depression, Betic massif basins and in the spanish Levant in general). Comparisons among the Neogene vulcanism of this region and similar manifestations documented in Algarve (basanite of Figueira-Portimão, etc) are established.

O pórfiro dacítico de Valverde (Alcácer do Sal) idade Rb-Sr e suas implicações

The unexpected discovery of a small outcrop of igneous rock isolated within an extensive outcrop of Neogene and Quaternary sediments called for the attention of CEPUNL's researchers. The rock is a dacite whose Rb-Sr age (C. A. and M. H. C.) is 291 M. y. upper Carboniferous. Hence the dacite may be related to volcanism in the Santa Suzana tectonic basin.

The First WORKS Conference on Transformation of Work in a Global Knowledge Economy

The relationship between the changes of the global economy and individual working conditions formed the background of the first WORKS conference “The transformation of work in a global knowledge economy: towards a conceptual framework”, held in Chania, Greece from 21st – 22nd September, 2006 and attended by around 50 European researchers. Experts from academia and trade unions from all over the world were invited to give insights into their field of research, contributing to one of the main topics of the conference: (i) globalisation and organisational restructuring, (ii) workers’ organisation, the quality of working life and the gender dimension and (iii) global experiences and recommendations.

Knowledge discovery from trajectories

Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial Technologies

Learning with tangible interfaces

Trabalho apresentado no âmbito do Mestrado em Engenharia Informática, como requisito parcial para obtenção do grau de Mestre em Engenharia Informática

Bitocast: a hybrid BitTorrent and IP Multicast content distribution solution

Dissertação apresentada para obtenção do Grau de Mestre em Informática, pela Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia

Social network analysis applied to knowledge creation and transfer in the portuguese agricultural R&D field: an exploratory study

Paper presented at the 9th European Conference on Knowledge Management, Southampton Solent University, Southampton, UK, 4-5 Sep. 2008. URL: http://academic-conferences.org/eckm/eckm2008/eckm08-home.htm

Transactional filesystems

Dissertação de Mestrado em Engenharia Informática

Contributos para a avaliação económica de medicamentos em Portu

RESUMO: A importância da avaliação económica na área da saúde tem sido crescente ao longo das últimas três décadas. É um campo de análise multi-disciplinar pelo qual se têm vindo a interessar investigadores de todo o mundo e onde, naturalmente, a economia da saúde tem contributos significativos para dar. Contudo, é uma área ainda relativamente inexplorada em termos de investigação metodológica em Portugal. Espera-se com este trabalho colmatar algumas das lacunas existentes e lançar pontes para investigação futura. Neste estudo pretendem-se desenvolver contributos autónomos, numa óptica de resolução de problemas concretos, para a avaliação económica de medicamentos em Portugal. Em primeiro lugar abordou-se a importância da estimação dos custos nos estudos de avaliação económica em saúde. Em segundo lugar determinou-se o custo de um doente com esclerose múltipla, por nível de severidade em Portugal com recurso à metodologia de estudos custo da doença. Em terceiro lugar, aplicando a mesma metodologia, determinou-se o custo de um doente com psoríase, por nível de severidade, em Portugal. Em quarto lugar mediu-se o impacto da psoríase na qualidade de vida relacionada com a saúde dos indivíduos afectados através de dois instrumentos genéricos de medição da qualidade de vida relacionada com a saúde (SF-36 e EQ-5D) e de dois instrumentos específicos (DLQI e PDI). Em quinto lugar, foi feita a adaptação de um modelo sobre a prevenção do tromboembolismo venoso em cirurgia ortopédica ao contexto nacional com recurso a dados recolhidos numa amostra de hospitais portugueses. Foi ainda apresentada uma estimativa do impacto orçamental decorrente da inclusão, ou não, de um novo medicamento na prática nacional. ABSTRACT: The importance of economic evaluation in the health care sector has been growing in the last three decades. It is a multidisciplinary field of research that attracts attention from researchers working all over the world. It is should be noted that health economics can contribute significantly to the development of this area. However, in Portugal is difficult to find methodological contributes in this field of research. With this work one hope to be able to overcome some of the existing shortcomings. This study seeks to develop independent contributions for the economic evaluation of pharmaceuticals in Portugal, aiming to help to solve existing problems. Firstly, one approached the importance of the accurate estimation of costs in economic evaluations of pharmaceuticals. Secondly, the cost of patient with multiple sclerosis was estimated, by severity level, in Portugal, using a cost of illness methodology. In third place, employing the same methodology, the cost of patient with psoriasis by severity level was estimated for Portugal. In fourth place, the impact of psoriasis in the quality of life related to health was ascertained by two generic measures (SF-36 and EQ-5D) and two specific measures (DLQI and PDI). Lastly, a model on the prevention of venous thromboembolism in orthopedic surgery was adapted for Portugal through the inclusion of data collected in a sample of Portuguese hospita

Scale-free networks and scalable interdomain routing

Trabalho apresentado no âmbito do Mestrado em Engenharia Informática, como requisito parcial para obtenção do grau de Mestre em Engenharia Informática

Miocene marine-continental correlations in the Lisbon area and some discussion related to personnal experience

Sandpit exploitation near Lisbon allowed collecting of many Miocene, non marine fossils. These sands are part of the mostly marine Miocene series in the Lower Tagus basin. The particularly favourable situation led several researchers to deal with marine-continental correlations. Difficulties often concern methodologic aspects. Some poorly based interpretations exerced a lasting influence. A critical approach is presented. Analysis requires data. Methods based upon models often lead to the temptation of fitting data in order to confirm a priori conclusions, or of mixing up data as if of equal statistic value while they have not at all the same weight. Erroneous interpretations' uncritical repetition for many years "upgraded" them into absolute truth. Another point is endemism vs. europeism. Miocene mammals from Lisbon compared well with corresponding French, contemporaneous taxa, while this was apparently not true for Spanish ones. Too much accent had been put on the endemic character of Spanish, or even regional, mammalian faunas. Nationalist bias and sensationalism also weigh, albeit negatively. Meanwhile nearly all the more evident examples as the rhinoceros Hispanotherium are discredited as Iberian endemisms. Taxa may appear as endemic just because they have not yet been found elsewhere. At least for the medium to large-sized mammals, with their huge geographic distribution, faunal differences depend much more on ecology, climate and environmental conditions. Emphasis on differences may also result from researchers that are often in a precarious situation and need very much to achieve short-term, preferably sensational results. Overvalued differences may mask real similarities. Unethic and not scientific behaviour are further enhanced by "nomina nuda" tricks that may simply be a way to circunvent or cheat the Priority Rule. On the other hand, access to communication networks may present as sensational novelties items that are not new at all, misleading the audience. A new class of "science people" arose, created by the media and not by the value of their real achievements. Discussion is presented on sedimentation processes and discontinuities that are often regarded as absolute precision dating tools, as well as on some geochemical and paleomagnetic interpretations. A very good chronologie frame has been obtained for the basin under study on the basis of an impressive set of data, providing a rather detailed and accurate frame for Miocene marine-continental correlations.