Publications

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Tana, M, Bianchi A, Sclocco R, Franchin T, Cerutti S, Leal A.  2012.  . Parcel-Based Connectivity Analysis of fMRI Data for the Study of Epileptic Seizure Propagation.. Brain Topography . (DOI:10.1007/s10548-012-0225-2)
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Coito, F, Lemos JM, Silva RN, Mosca E.  1997.  Adaptive control of a solar energy plant: Exploiting accessible disturbances. International journal of adaptive control and signal processing. 11:327–342., Number 4: Wiley Online Library Abstract

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Palma, LB, Coito F, Silva R.  2002.  Adaptive observer based fault diagnosis approach applied to a thermal plant. submitted to 10th Mediterranean Conference on Control and Automation. Abstract

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Coito, F, Lemos J.  2005.  Adaptive Optimization with Constraints: Convergence and oscillatory behaviour. Pattern Recognition and Image Analysis. :335–366.: Springer Berlin/Heidelberg Abstract

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Santos, TO, Caetano RB, Lemos JM, Coito FJ.  2000.  Adaptive Regulation of Arc Welding Temperature with Parallel Integral Action. Abstract

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Pereira, P, Fino H, Coito F, Ventim-Neves M.  2009.  ADISI-An efficient tool for the automatic design of integrated spiral inductors. Electronics, Circuits, and Systems, 2009. ICECS 2009. 16th IEEE International Conference on. :799–802.: IEEE Abstract

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Leitão, DN.  2008.  Análise de Fusos do Sono: decomposição e desmodulação de sinal, June. (Manuel Ortigueira, Ed.).: FCT-UNL Abstract
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Ricardo, CN, Gerald JA, Ortigueira M.  2005.  Analysis of New Quasi-Orthogonal BCH-Derived Sequences for CDMA Applications. XX Conference on Design of Circuits and Integrated Systems (DCIS'05). Abstract
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Leal, A, Dias AI, Vieira JP, Ana Moreira, Távora L, Calado E.  2008.  Analysis of the dynamics and origin of epileptic activity in patients with tuberous sclerosis evaluated for surgery of epilepsy. Clinical Neurophysiology . (119):853-861.
Leal, A, Dias AI, Vieira JP.  2006.  Analysis of the EEG dynamics of epileptic activity in gelastic seizures using decomposition in independent components. Clinical Neurophysiology. (117):1595-1601.
Leal, A, Nunes S, Dias AI, Vieira JP, Ana Moreira, Calado E.  2007.  Analysis of the generators of epileptic activity in early-onset childhood benign occipital lobe epilepsy. Clinical Neurophysiology. (118):1341-1347.
Ngolo, M, Palma LB, Coito F, Gomes L, Costa A.  2009.  Architecture for remote laboratories based on REST web services. E-Learning in Industrial Electronics, 2009. ICELIE’09. 3rd IEEE International Conference on. :30–35.: IEEE Abstract

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Costa, JC, Ortigueira MD, Batista AG.  2011.  ARMA Modelling of Sleep Spindles. Second IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems. : Doceis Abstract
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Simons, L.  2009.  Automatic sleep apnea detection and sleep classification using the ECG and the Sp02 signals, December. (Arnaldo Batista, Manuel Ortigueira, Eds.).: FCT-UNL Abstract
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Leal, A, Dias A, Vieira JP, Secca M, Jordão C.  2006.  The BOLD Effect of Interictal Spike Activity in Childhood Occipital Lobe Epilepsy. Epilepsia. 9(47):1536-1542.
Leal, A, Nunes S, Martins A, Secca MF, Jordão C.  2007.  Brain Mapping of Epileptic Activity in a Case of Idiopathic Occipital Lobe Epilepsy (Panayiotopoulos Syndrome). Epilepsia. 6(48):1179-1183.
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Silva, RN, Rato LM, Lemos JM, Coito F.  1997.  Cascade control of a distributed collector solar field. Journal of Process Control. 7:111–117., Number 2: Elsevier Abstract

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Cardoso, E.  2010.  Classificação automática do sono: contribuição utilizando distância de itakura-saito e wavelets, March. (Arnaldo Batista, Manuel Ortigueira, Rui Rodrigues, Eds.).: FCT-UNL Abstract
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Antunes, R, Coito FV.  2009.  A Cognitive Model for Frequency Signal Classification. International Journal of Mathematical, Physical and Engineering Sciences. 3:240–245., Number 4: Citeseer Abstract

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Ortigueira, M.  2006.  A coherent approach to non-integer order derivatives. Signal Processing. 86:2505–2515., Number 10: Elsevier AbstractWebsite

The relation showing that the Grunwald-Letnikov and generalised Cauchy derivatives are equal is presented. This establishes a bridge between two different formulations and simultaneously between the classic integer order derivatives and the fractional ones. Starting from the generalised Cauchy derivative formula, new relations are obtained, namely a regularised version that makes the concept of pseudo-function appear naturally without the need for a rejection of any infinite part. From the regularised derivative, new formulations are deduced and specialised first for the real functions and afterwards for functions with Laplace transforms obtaining the definitions proposed by Lionville. With these tools suitable definitions of fractional linear systems are obtained.

Palma, LB, Coito FV, da Silva RN.  2005.  Combined approach to fault diagnosis based on principal components and influence matrix. Intelligent Signal Processing, 2005 IEEE International Workshop on. :171–176.: IEEE Abstract

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Palma, LB, Coito F, Neves-Silva R.  2004.  A combined approach to fault diagnosis in dynamic systems. Abstract

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Ortigueira, M.  2009.  Comments on ?Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions? Applied Mathematical Modelling. 33:2534–2537., Number 5: Elsevier Inc. AbstractWebsite

Some results presented in the paper ?Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions? ?I. Podlubny, Fractional Differential Equations, Academic Press, San Diego, 1999? are discussed in this paper. The slightly modified Grünwald-Letnikov derivative proposed there is used to deduce some interesting results that are in contradiction with those proposed in the referred paper.

Ortigueira, MD.  2009.  Comments on ?Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions? Applied Mathematical Modelling. 33:2534–2537., Number 5 AbstractWebsite

Some results presented in the paper ?Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions? ?I. Podlubny, Fractional Differential Equations, Academic Press, San Diego, 1999? are discussed in this paper. The slightly modified Grünwald-Letnikov derivative proposed there is used to deduce some interesting results that are in contradiction with those proposed in the referred paper. Keywords: Fractional calculus; Grünwald-Letnikov derivative; Fractional Brownian motion

Xanthopoulos, P, Golemati S, Sakkalis V, Ktonas PY, Ortigueira M, Zervakis M, Paparrigopoulos T, Tsekou H, Soldatos CR.  2006.  Comparative analysis of time-frequency methods estimating the time-varying microstructure of sleep EEG spindles, October. Information Technology Applications in Biomedicine. Abstract
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