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2002
Karlovich, Alexei Yu. "Algebras of singular integral operators on rearrangement-invariant spaces and Nikolski ideals." The New York Journal of Mathematics. 8 (2002): 215-234. AbstractWebsite

We construct a presymbol for the Banach algebra alg(Ω,S) generated by the Cauchy singular integral operator S and the operators of multiplication by functions in a Banach subalgebra Ω of L. This presymbol is a homomorphism alg(Ω,S)ΩΩ whose kernel coincides with the commutator ideal of alg(Ω,S). In terms of the presymbol, necessary conditions for Fredholmness of an operator in alg(Ω,S) are proved. All operators are considered on reflexive rearrangement-invariant spaces with nontrivial Boyd indices over the unit circle.

Colle, E., Rybarczyk Y., and Hoppenot P. "ARPH: An assistant robot for disabled people." IEEE Systems, Man and Cybernetics’02. Hammamet, Tunisia 2002. copy.pdf
J. Araújo, A. Moreira, I. S. Brito, and A. Rashid. "Aspect-Oriented Requirements with UML." 5th International Conference on the Unified Modeling Language (UML 2002). Dresden, Germany 2002. Abstract

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Caeiro, Frederico, and Ivette M. Gomes. "Bias reduction in the estimation of parameters of rare events." Theory of Stochastic Processes. 8.24 (2002): 67-76. Abstract2002tsp_caeiro_gomes.pdf

{Consider the distribution function $EV_{\gamma}(x)=\exp(-(1+\gamma x)^{- 1/\gamma}),\ \gamma>0,\ 1+\gamma x>0$, to which $\max(X_{1},łdots, X_{n})$ is attracted after suitable linear normalization. The authors consider the underlying model $F$ in the max-domain of attraction of $EV_{\gamma}$, where $ X_{i:n},\ 1łeq Iłeq n$, denotes the i-th ascending order statistic associated to the random sample $(X_{1},łdots, X_{n})$ from the unknown distribution function $F$. This article is devoted to studying semi-parametric estimators of $\gamma$ in the form \gamma_{n}^{(þeta,\alpha)}(k)=(\Gamma(\alpha)/M_{n}^{(\alpha- 1)}(k))łeft(M_{n}^{(þeta\alpha)}(k)/\Gamma(þeta\alpha+1)\right) ^{1/þeta},\quad \alpha\geq 1,\quad þeta>0, parametrized by the parameters $\alpha$ and $þeta$, which may be controlled, where $M_{n}^{(0)}=1$ and $ M_{n}^{(\alpha)}(k)=k^{-1}\sum_{i=1}^{k}(łn X_{n-i+1:n}-łn X_{n-k:n})^{\alpha}$, $\alpha>0$, is a consistent estimator of $\Gamma(\alpha+1)\gamma^{\alpha}$, as $k\toınfty$, and $k=o(n)$, as $n\toınfty$.\par The authors derive the asymptotic distributional properties of the considered class of estimators and obtain that for $þeta>1$ it is always possible to find a control parameter $\alpha$ which makes the dominant component of the asymptotic bias of the proposed estimator null and depends on the second order parameter $\rho$. An investigation of the $\rho$-estimator is presented.}

Phillips, AJL. "Botryosphaeria species associated with diseases of grapevines in Portugal." Phytopathologia Mediterranea. 41 (2002): 3-18.
Caeiro, Frederico, and Ivette M. Gomes. "A class of asymptotically unbiased semi-parametric estimators of the tail index." Test. 11 (2002): 345-364. Abstract

{Summary: We consider a class of consistent semi-parametric estimators of a positive tail index $\gamma$, parameterized by a tuning or control parameter $\alpha$. Such a control parameter enables us to have access, for any available sample, to an estimator of $\gamma$ with a null dominant component of asymptotic bias, and with a reasonably flat mean squared error pattern, as a function of $k$, the number of top order statistics considered. Moreover, we are able to 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 may have access to a larger number of top order statistics than the number needed for optimal estimation through the Hill estimator.}

Rybarczyk, Y., Ait Aider O., Hoppenot P., and Colle E. "Commande à distance d’un système d’assistance robotique aux personnes handicapées." Handicap’02. Paris, France 2002. copy.pdf
Mateus, O., and J. J. Jacinto. "Contribuição para o estudo de Hemidactylus turcicus (Reptilia, Gekkonidae): ritmos de actividade e microhabitat em Évora, Portugal." VII Congresso Luso-Espanhol de Herpetologia. Évora 2002. 136. Abstract

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Rybarczyk, Y., Colle E., and Hoppenot P. "Contribution of neuroscience to the teleoperation of rehabilitation robot." IEEE Systems, Man and Cybernetic’02. Hammamet, Tunisia 2002. copy.pdf
A. Moreira, J. Araújo, and I. S. Brito. "Crosscutting Quality Attributes for Requirements Engineering." Software Engineering and Knowledge Engineering Conference (SEKE). Ischia, Italy: ACM Press, 2002. Abstract

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"Dark radiation dynamics on the brane." Physical Review D. 66.12 (2002): 124002-124014.Website
Glavchev, I., K. T. Petrova, and I. Devedjiev. "Determination of the activity of phosphorus containing conpounds on the crosslinking of epoxy resins by acid anhydrides." Polym. Test. 21.3 (2002): 243-245. DOI: 10.1016/S0142-9418(01)00075-7.
Glavchev, I., K. Petrova, and M. Ivanova. "Determination of the coefficient of thermal expansion of epoxy composites." Polym. Test. 21.2 (2002): 177-179. DOI: 10.1016/S0142-9418(01)00066.
Glavchev, I., K. T. Petrova, and I. Devedjiev. "Determination of the rate of cure of epoxy resin/maleic anhydride/Lewis acids." Polym. Test. 21.1 (2002): 89-91. DOI: 10.1016/S0142-9418(01)00053-8.
A. Rashid, P. Sawyer, A. Moreira, and J. Araújo. "Early Aspects: a Model for Aspect-Oriented Requirements Engineering." Requirements Engineering 2002 (RE'02). Essen, Germany: IEEE Computer Society, 2002. Abstract

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Lapa, N., J. F. Santos Oliveira, S. L. Camacho, and L. J. Circeo. "An ecotoxic risk assessment of residue materials produced by the plasma pyrolysis/vitrification (PP/V) process." Waste Management. 22.3 (2002): 335-342. AbstractWebsite

Plasma is the fourth state of matter, following the three states of solid, liquid and gas. Experience has amply demonstrated that solids exposed to the oxygen-deficient plasma flame are converted to liquid, and liquid exposed to the same flame is converted to gas. A low amount of vitrified solid residue material usually remains at the end of this process. Plasma pyrolysis/vitrification (PP/V) has been demonstrated as a safe, efficient, cost-effective technology for the treatment of wastes, including hazardous wastes. Besides the low amounts of gaseous byproducts that PP/V produces, the solid vitrified residue presents a low leachability of pollutants. Studies have been performed in many countries in order to assess the leachability of chemical substances. But from the results of identified studies, none has reported results on the ecotoxicological properties of the leachates. The aim of this study was to contribute to the assessment of ecotoxic risk of four different vitrified materials. Vitrified samples of contaminated soils, municipal solid wastes, and incinerator bottom ashes were submitted to the European leaching pre-standard test number prEN 12457-2. The leachates were analyzed for 22 chemical parameters. The biological characterization comprised the assessment of bioluminescence inhibition of Photobacterium phosphoreum bacterium, growth inhibition of Pseudokirchneriella subcapitata algae and the germination inhibition of Lactuca sativa vegetable. The chemical and ecotoxicological results were analyzed according to the French proposal of Criteria on the Evaluation Methods of Waste Toxicity (CEMWT) and a Toxicity Classification System (TCS). The chemical and ecotoxicological results indicated a low leachability of pollutants and a low toxicity level of leachates. All samples studied were as below the TCS class 1 level (no significant toxicity observed) and as non-ecotoxic for CEMWT. Therefore, the environmental ecotoxic risk of the analyzed vitrified samples was determined to be very low.

Lapa, N., R. Barbosa, J. Morais, B. Mendes, J. Méhu, and J. Santos Oliveira. "Ecotoxicological assessment of leachates from MSWI bottom ashes." Waste Management. 22.6 (2002): 583-593. AbstractWebsite

In this paper, chemical and ecotoxicological data of leachates from bottom ashes collected in different Municipal Solid Waste Incinerators (MSWI) are shown. The bottom ashes were collected in Belgium (three incinerators—samples B1 to B3), France, Germany, Italy and United Kingdom (one incinerator in each country—samples F1, D1, I1 and UK1, respectively). Both chemical and ecotoxicological characterizations of leachates were done on the framework of the European Directive 91/689/EEC and the European Council Decision 94/904/EC. This work was carried out under the European project called Valomat, which was supported by the European Commission through Brite-Euram III program. Twenty-one inorganic parameters were analyzed. The ecotoxicological assays were done under standard laboratory conditions, using the bacterium Photobacterium phosphoreum, the freshwater alga Pseudokirchneriella subcapitata, the crustacean Daphnia magna and the vegetable Lactuca sativa. Chemical data varied from sample to sample. Similar results were obtained in biological assays. The samples can be classified as ecotoxic/hazardous according to the French proposal for a Criterion and Evaluation Methods of Waste Ecotoxicity (CEMWE) and the German regulation on Hazardous Waste Classification (HWC). However, samples B1, B2, B3 and D1 comply the maximum limits for direct valorization category defined in the French Classification of Bottom Ashes based on their Polluting Potential (CBAPP). Sample B1 presented the lowest level of ecotoxicity, being considered as the most interesting to be used in the development of new materials for civil engineering works.

Amado, M. P. Energy Conservation in Habitation Buildings and the Level of Environmental Comfort. Housing Construction – An Interdisciplinary Task. Coimbra, Portugal: Wide Dreams – Projectos Multimédia, 2002.
Jacinto, J. J., and O. Mateus. "Integration of the distribution of Hemidactylus turcicus and Tarentola mauritanica in Portugal Continental in a G.I.S. and some occasional observations." Livro de resumos do VII Congresso Luso-espanhol (XI Congreso Español de Herpetologia. Évora, Portugal: Sociedade Portuguesa de Herpetologia & Associacion Herpetologica Española, 2002. 127. Abstract

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Karlovich, Alexei Yu., and Yuri I. Karlovich. "Invertibility in Banach algebras of functional operators with non-Carleman shifts." Ukrains'kyj matematychnyj kongres -- 2001. Pratsi. Sektsiya 11. Funktsional'nyj analiz. Kyiv: Instytut Matematyky NAN Ukrainy, 2002. 107-124. Abstract13_2002_ukrainian_math_congress-kyiv-01.pdf

We prove the inverse closedness of the Banach algebra \mathfrak{A}_p of functional operators with non-Carleman shifts, which have only two fixed points, in the Banach algebra of all bounded linear operators on L^p. We suppose that 1 \le p \le \infty and the generators of the algebra \mathfrak{A}_p have essentially bounded data. An invertibility criterion for functional operators in \mathfrak{A}_p is obtained in terms of
the invertibility of a family of discrete operators on l^p. An effective invertibility criterion is established for binomial difference operators with l^\infty coefficients on the spaces l^p. Using the reduction to binomial difference operators, we give effective criteria of invertibility for binomial functional operators on the spaces L^p.

Reis, A., J. Pedro, F. P. Amarante dos Santos, and L. Salvador. "Modelos de análise de estruturas de engenharia civil: Coberturas de estádios e pontes de tirantes." VII Congresso de Mecanica Aplicada e Computacional. Évora 2002.
Mateus, O., and MT Antunes. "Novos vestígios de dinossauros saurópodes do Jurássico Superior da Lourinhã (Portugal)." Congresso Ibérico de Herpetologia. Évora, Portugal 2002. Abstract

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Fernandes, Vítor H. "Presentations for some monoids of partial transformations on a finite chain: a survey." Semigroups, algorithms, automata and languages (Coimbra, 2001). World Sci. Publ., River Edge, NJ, 2002. 363-378.
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