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2004
Fortunato, E., V. Assunção, A. Marques, A. Gonçalves, H. Águas, L. Pereira, I. Ferreira, FMB Fernandes, R. J. C. Silva, and R. Martins. "ZnO:Ga thin films produced by RF sputtering at room temperature: Effect of the power density." Materials Science Forum. 455-456 (2004): 12-15. AbstractWebsite
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Alferes, {José Júlio Alves}, and {Luís Manuel Sancho Moniz} Pereira. "Abduction in well-founded semantics and generalized stable models via tabled dual programs." Theory And Practice Of Logic Programming. 4 (2004): 383-428. Abstract
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Damásio, {Carlos Augusto Isaac Piló Viegas}, {José Júlio Alves} Alferes, {Pedro Manuel Corrêa Calvente de} Barahona, and {Francisco Moura Castro Ascensão E. de de} Azevedo. "Deductive Diagnosis of Digital Circuits." Artificial Intelligence Applications and Innovations. 2004. 155-165. Abstract
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Damásio, {Carlos Augusto Isaac Piló Viegas}, {José Júlio Alves} Alferes, {Pedro Manuel Corrêa Calvente de} Barahona, and {Francisco Moura Castro Ascensão E. de de} Azevedo. "Deductive Diagnosis of Digital Circuits." IFIP World Computer Congress. 2004. 155-166. Abstract
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Alferes, {José Júlio Alves}. "From logic programs updates to action description updates." Lecture Notes in Computer Science. Vol. 3487. 2004. 52-77. Abstract
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Leite, {João Alexandre Carvalho Pinheiro}, and {José Júlio Alves} Alferes Logics in Artificial Intelligence, 9th European Conference, JELIA 2004. Springer, 2004. Abstract
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Leite, {João Alexandre Carvalho Pinheiro}, and {José Júlio Alves} Alferes. "Semantics for dynamic logic programming: A principle-based approach." Lecture Notes in Computer Science. Vol. 2923. 2004. 8-20. Abstract
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Alferes, {José Júlio Alves}. "Towards generic query, update, and event languages for the semantic web." Lecture Notes in Computer Science. Vol. 3208. 2004. 19-33. Abstract
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Alferes, {José Júlio Alves}. "Well founded semantics for logic program updates." Lecture Notes in Artificial Intelligence. Vol. 3315. 2004. 397-407. Abstract
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J. Whittle, and J. Araújo. "Scenario Modeling with Aspects." IEE Proceedings - Software Engineering (2004). Abstract

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Moreira, A., and J. Ara. "Handling Unanticipated Requirements Change with Aspects." Software Engineering and Knowledge Engineering Conference (SEKE). Knowledge Systems Institute, 2004. Abstract
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Delgado, Manuel, and Vítor H. Fernandes. "Abelian kernels of monoids of order-preserving maps and of some of its extensions." Semigroup Forum. 68 (2004): 335-356.Website
Delgado, Manuel, and Vítor H. Fernandes. "Abelian kernels, solvable monoids and the abelian kernel length of a finite monoid." Semigroups and languages. World Sci. Publ., River Edge, NJ, 2004. 68-85.
Saraiva, J. G., A. Wemans, M. J. P. Maneira, A. Maio, and J. Patriarca. "The aluminization of 600 k WLS fibers for the TileCal/ATLAS/LHC." IEEE TRANSACTIONS ON NUCLEAR SCIENCE. 51.3 (2004): 1235-1241.
Igreja, R., and C. J. Dias. "Analytical evaluation of the interdigital electrodes capacitance for a multi-layered structure." Sensors and Actuators a-Physical. 112 (2004): 291-301. AbstractWebsite

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Oliveira, F. "Approximation of the DNLS equation by the cubic nonlinear Schrodinger equation." Proceedings of the Royal Society of Edinburgh. 134 (2004): 595-607.Website
Gomes, M.Ivette, Frederico Caeiro, and Fernanda Figueiredo. "Bias reduction of a tail index estimator through an external estimation of the second-order parameter." Statistics. 38 (2004): 497-510. Abstract

{Summary: We first consider a class of consistent semi-parametric estimators of a positive tail index $\gamma$, parametrised in a tuning or control parameter $\alpha$. Such a control parameter enables us to have access for any available sample, to an estimator of the tail index $\gamma$ with a null dominant component of asymptotic bias and consequently with a reasonably flat mean squared error pattern, as a function of $k$, the number of top-order statistics considered.\par Such a control parameter depends on a second-order parameter $\rho$, which will be adequately estimated so that we may achieve a high efficiency relative to the classical Hill estimator [ıt B. M. Hill}, Ann. Stat. 3, 1163–1174 (1975; Zbl 0323.62033)] provided we use a number of top-order statistics larger than the one usually required for the estimation through the Hill estimator. An illustration of the behaviour of the estimators is provided, through the analysis of the daily log-returns on the Euro-US\$ exchange rates.}

Rybarczyk, Y., Mestre D., Hoppenot P., and Colle E. "A biological model for the evaluation of human-machine adaptation." AMSE Modelling, Measurement and Control. 65.78 (2004): 23-33.copy.pdf
Rybarczyk, Y., Mestre D., Hoppenot P., and Colle E. "A biologically-inspired model for human-machine adaptation." 1st Portuguese Forum of Experimental Psychology. Braga, Portugal 2004. copy.pdf
Lapa, N., R. Barbosa, B. Mendes, and J. F. Santos Oliveira. "Chemical and ecotoxicological long-term behaviour of new materials for quarry back-filling and underground constructions." International RILEM Conference on the Use of Recycled Materials in Building and Structures. Eds. E. Vázquez, Ch. F. Hendriks, and G. M. T. Janssen. Barcelona: RILEM, 2004. 373-382. Abstractpaper_186_final_version.pdf

The main aim of the Valomat project was the development of new materials for quarry back-filling and underground constructions, based on the reuse of bottom ashes from MSWI. Bottom ashes were collected in six incineration plants of Europe. Some of them were selected for the development of new materials.
One task of this project comprised the study of the long-term behavior of new materials, under simulated conditions of environmental exposure. Three different scenarios were studied. For each scenario, a pilot plant was constructed and the new materials were studied under laboratory conditions or natural weather. The long-term behavior of these materials was assessed through the characterization of chemical and ecotoxicological properties of the leachates.
The chemical contamination and the ecotoxicological levels of the leachates were relatively low, although different levels had been determined for the three different scenarios. The immersion in dechlorinated tap water (scenario S1) had shown the highest emission levels of chlorides, sulphates, DOC, and Al, especially for the materials B2/1 and B2/2. The lowest ecotoxicological and chemical levels were determined in the scenario in which the materials were buried in a sieved soil.

Xavier, J. C., N. M. Garrido, M. Oliveira, J. L. Morais, P. P. Camanho, and F. Pierron. "A comparison between the Iosipescu and off-axis shear test methods for the characterization of ıt Pinus pinaster Ait." Composites Part A: Applied Science and Manufacturing. 35 (2004): 827-840. Abstract

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Ramos, Luís, Manuela Oliveira, and João T. Mexia. "Comparison, through Multiple Factorial Analysis, of treatments for Cork oak Sudden Death." Listy Biometryczne-Biometrical Letters. 41 (2004): 1-14.
Marques, J. L., P. Fong, P. Macedo, C. Chastre Rodrigues, and V. Lúcio Comportamento da Ligação CFRP-Resina–Betão Sujeita a Acções Cíclicas. Betão Estrutural 2004. Porto: FEUP, 2004. Abstractmarques2004fomachlu_-_be2004.pdf

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"Conformal bulk fields, dark energy and brane dynamics." Proceedings of the fourth Tegernsee international conference on particle physics beyond the Standard Model, Beyond 2003. Ed. H. V. Klapdor-Kleingrothaus. Heidelberg: Springer, 2004. 671-681.