Papers in International Journals

• Alves, Carlos J. S.; Silvestre, Ana Leonor (2004) On the Determination of Point-Forces on a Stokes System Mathematics and Computers in Simulation: 66(4-5), 385-397.

• Silvestre, Ana Leonor (2004) On the existence of steady flows of a Navier-Stokes liquid around a moving rigid body Math. Meth. Appl. Sc.: 27, 1399-1409.

• Hall, Andreia; Scotto, Manuel; Ferreira, Helena (2004) On the extremal behaviour of generalised periodic sub-sampled moving average models with regularly varying tails Extremes: 7, 149-160.

• Gouveia, M. J.; (previously Saramago, M. J.) (2004) Optimal natural dualities: the role of endomorphisms J. Australian Math. Soc.: 77, 269-296.

• Fernandes, Vítor Hugo; Gomes, Gracinda M. S.; Jesus, Manuel M. (2004) Presentations for Some Monoids of Injective Partial Transformations on a Finite Chain Southeast Asian Bulletin of Mathematics: 28, 903-918.

• Scotto, Manuel (2003) A note on the asymptotic distribution of the maxima in disaggregated time series models Statistics & Probability Letters: 65, 127-137.

• Mateus, P.; Morais, M. C. ; Nunes, Cláudia; Pacheco, António; Sernadas, A.; Sernadas, C. (2003) Categorical foundations for randomly timed automata Theoretical Computer Science: 308(1-3), 393-427.

• de Carvalho, Mamede; Scotto, Manuel; Lopes, Arminda; Swash, Michael (2003) Clinical and neurophysiological evaluation of the clinical progression in amyotrophic lateral sclerosis Muscle & Nerve: 28, 630-633.

• Scotto, Manuel; Ferreira, Helena (2003) Extremes of deterministic sub-sampled moving averages with heavy-tailed innovation Applied Stochastic Models in Business and Industry: 19, 303-313.

• Scotto, Manuel; Turkman, Kamil F.; Anderson, Clive W. (2003) Extremes of some sub-sampled time series Journal of Time Series Analysis: 24, 579-590.

• Hall, Andreia; Scotto, Manuel (2003) Extremes of sub-sampled integer-valued moving average models with heavy-tailed innovations Statistics & Probability Letters: 63, 97-105.

• Semoushin, I.V.; Tsyganova, J.V.; Kulikova, Maria (2003) Fault Poin Detection with the Bank of Competitive Kalman Filters Lecture Notes in Computer Science: 2658, 417-426.

• Gomes, Gracinda M. S.; Gould, V. (2003) Finite proper covers in a class of finite semigroups with commuting idempotents Semigroup Forum: 66, 433-454.

• Kulikova, Maria (2003) On Effective Computation of the Logarithm of the Likelihood Ratio Function for Gaussian Signals Lecture Notes in Computer Science: 2658, 427-435.

• Ferreira, Ana; de Haan, Laurens; Peng, Liang (2003) On optimizing the estimation of high quantiles of a probability distribution Statistics: 37, 401-434.

• de Carvalho, Mamede; Scotto, Manuel; Lopes, Arminda; Swash, Michael (2002) F-waves and the corticospinal lesion in amyotrophic lateral sclerosis Amyotrophic Lateral Sclerosis: 3, 131-136.

• Boente, Graciela; Pires, Ana M.; Rodrigues, Isabel M. (2002) Influence functions and outlier detection under the common principal components model: A robust approach Biometrika: 89, 861-875.

• Lima, Pedro M.; Diogo, Teresa (2002) Numerical solution of a non-uniquely solvable Volterra integral equation using extrapolation methods J. Computational and Applied Mathematics: 140, 537--557.

• Ferreira, Helena; Scotto, Manuel (2002) On the asymptotic location of high values of a stationary sequence Statistics & Probability Letters: 60, 475-482.

• Scotto, Manuel; Turkman, Kamil F. (2002) On the extremal behavior of sub-sampled solutions of stochastic difference equations Portugaliae Mathematica: 59, 267-283.

• Silvestre, Ana Leonor (2002) On the self-propelled motion of rigid body in a viscous liquid and on the attainability  J. Math. Fluid Mech.: 4, 285-326.

• Silvestre, Ana Leonor (2002) On the slow motion of a self-propelled rigid body in a viscous incompressible fluid J. Math. Anal. Appl.: 274, 203-227.

• Ferreira, Ana (2002) Optimal asymptotic estimation of small excedance probabilities J. Statist. Plann. Inference: 104, 83-102.

• Gouveia, M. J.; (previously Saramago, M. J.); Priestley, H. A. (2002) Optimal natural dualities: the structure of failsets Internat. J. Algebra and Computation: 12 (3), 407-436.

• Gomes, Gracinda M. S.; Gould, Victoria (2001) Fundamental Ehresmann Semigroups Semigroup Forum: 63 (1), 11-33.

• Guedes Soares, Carlos; Scotto, Manuel (2001) Modelling uncertainty in long-term predictions of significant wave height Ocean Engineering: 28, 329-342.

• Araújo, Isabel M.; Branco, Mário J. J.; Fernandes, Vítor Hugo; Gomes, Gracinda M. S.; Ruskuc, N. (2001) On generators and relations for unions of semigroups Semigroup Forum: 63 (1), 49-62.

• de Carvalho, Mamede; Lopes, Arminda; Scotto, Manuel; Swash, Michael (2001) Reproducibility of neurophysiological and myometric measurement in the ulnar nerve-abductor digiti minimi system Muscle & Nerve: 24, 1391-1395.

• Morais, M. C. ; Pacheco, António (2001) Some stochastic properties of upper one-sided X-bar and EWMA charts for mu in the presence of shifts in sigma Sequential Analysis-Design Methods and Applications: 20, 1-12.

• S. McKee; T.Tang; Diogo, Teresa (2000)  An Euler-type method for two-dimensional Volterra integral equations of the first kind  IMA J. Num. Anal.: 3, 423-440.

• Diogo, Teresa; Franco, NB; Lima, Pedro M. (2000) Analysis of product integration methods for a class of singular Volterra integral equations Tendências da Matemática Aplicada e Computacional (TEMA ): 1(2), 373--387.

• Gomes, Gracinda M. S.; Gould, Victoria (2000) Graph expansions of unipotent monoids Comm. Algebra: 28 (1), 447-463.

• Scotto, Manuel; Guedes Soares, Carlos (2000) Modelling the long-term time series of significant wave height with non-linear threshold models Coastal Engineering: 40, 313-327.

• Santa-Clara, Catarina; Smith, Patrick F. (2000) Modules which are self-injective relative to closed submodules Contemp. Math.: 259, 487-499.

• Giraldes, Emília; Gomes, Gracinda M. S.; McAlister, D. B. (2000) On a class of lattice ordered inverse semigroups J. Algebra: 230, 496-517.

• Morais, M. C. ; Pacheco, António (2000) On the performance of combined EWMA schemes for mu and sigma: a Markovian approach Communications in Statistics - Simulation and Computation: 29(1), 153-174.

• Fountain, John; Gomes, Gracinda M. S. (2000) Primitive inverse congruences on categorical semigroups Proc. Edinburgh Math. Soc.: 43, 395-413.

• Gouveia, M. J.; (previously Saramago, M. J.) (2000) Some remarks on dualisability and endodualisability Algebra Universalis: 43, 197-212.

• Fountain, John; Gomes, Gracinda M. S.; Gould, Victoria (1999) A Munn type representation for a class of E-semiadequate semigroups J. Algebra: 218, 693-714.

• Morais, M. C. ; Pacheco, António (1999) Counted data control charts sensitive to sudden increases of the summary statistic REVSTAT (Statistical Review): 1, 25-45.

• Fountain, John; Gomes, Gracinda M. S.; Gould, Victoria (1999) Enlargements, semiabundancy and unipotent monoids Comm. Algebra: 27 (2), 595-614.

• Gomes, Gracinda M. S.; Gould, Victoria (1999) Proper weakly left ample semigroups Internat. J. Algebra Comput.: 9 (6), 721-739.

• Ramalhoto, M.F.; Morais, M. C.  (1999) Shewhart control charts for the scale parameter of a Weibull control variable with fixed and variable sampling intervals Journal of Applied Statistics: 26, 129-160.

• Ramalhoto, M.F.; Morais, M. C.  (1998) EWMA control charts for the scale parameter of a Weibull control variable with fixed and variable sampling intervals Economic Quality Control: 13, 23–46.

• Santa-Clara, Catarina (1998) Extending modules with injective or semisimple summands J. Pure Applied Algebra: 127, 193-203.

• Gomes, Gracinda M. S.; Szendrei, Mária B. (1998) Idempotent pure extensions of inverse semigroups via quivers J. Pure Applied Algebra: 127, 15-38.

• Morais, M. C. ; Natário, I. (1998) Improving an upper one-sided c-chart Communications in Statistics - Theory and Methods: 27(2), 353–364.

• Santa-Clara, Catarina; Silva, F. C. (1998) On infinite Goldie dimension J. Algebra: 205, 617-625.

• Gouveia, M. J.; (previously Saramago, M. J.) (1998) Optimal natural dualities for some quasivarieties of distributive double p-algebras Acta Math. Univ. Comenianae: 67, 249-272.

• Gomes, Gracinda M. S.; Howie, John M. (1998) Semigroups with zero whose idempotents form a subsemigroup Proc. Royal Soc. Edinburgh: 128A, 265-281.