Items where Author is "Ortigueira, Manuel"

Article

Rato, R.T. and Ortigueira, Manuel and Batista, Arnaldo (2008) On the HHT, its problems, and some solutions. Mechanical Systems and Signal Processing, 22 (6), pp. 1374-1394. ISSN 0888-3270. URL: http://dx.doi.org/10.1016/j.ymssp.2007.11.028. (ISI Web of Science, Citations: 15).

Ortigueira, Manuel (2006) Riesz potential operators and inverses via fractional centred derivatives. International Journal of Mathematics and Mathematical Sciences, 2006, pp. 1-12. ISSN 0161-1712. URL: http://dx.doi.org/10.1155/IJMMS/2006/48391.

Ortigueira, Manuel (2006) A coherent approach to non-integer order derivatives. Signal Processing, 86 (10), pp. 2505-2515. ISSN 0165-1684. (ISI Web of Science, Citations: 15).

Ortigueira, Manuel and Tenreiro-Machado, J.A. and Sá da Costa, J. (2005) Which Differintegration? IEE Proceedings Vision, Image & Signal Processing, 152 (6), pp. 846-850. ISSN 1350-245X. (ISI Web of Science, Citations: 13).

Inácio, J. A. and Gerald, J. A. and Ortigueira, Manuel (2005) New PN Even Balanced Sequences for spread spectrum systems. EURASIP Journal on Wireless Communications and Networking, 2005 (3), pp. 447-458. ISSN 1687-1472.

Ortigueira, Manuel (2005) Two new integral formulae for the Beta function. International Journal of Applied Mathematics, 18 (1), pp. 109-116. ISSN 1992-9978.

Ortigueira, Manuel and Coito, Fernando (2004) From Differences to Derivatives. Fractional Calculus & Applied Analysis, 7 (4), pp. 459-471. ISSN 1311-0454. URL: http://www.math.bas.bg/~fcaa/.

Ortigueira, Manuel (2003) A new symmetric fractional B-spline. Signal Processing, 83 (11), pp. 2311-2318. ISSN 0165-1684. (ISI Web of Science, Citations: 1).

Ortigueira, Manuel (2003) On the initial conditions continuous-time fractional linear systems. Signal Processing, 83 (11), pp. 2301-2309. ISSN 0165-1684. (ISI Web of Science, Citations: 23).

Goes, João and Paulino, Nuno and Ortigueira, Manuel (2002) A Digital-Domain Self-Calibration Technique for Video-Rate Pipeline A/D Converters Using Gaussian-White Noise. IEE Electronics Letters, 38 (19), pp. 1100-1101.

Ortigueira, Manuel and Matos, C. and Piedade, M.S. (2002) Fractional Discrete-Time Signal Processing: Scale Conversion and Linear Prediction. Nonlinear Dynamics, pp. 173-190. (ISI Web of Science, Citations: 2).

Book

Ortigueira, Manuel (2005) Processamento Digital de Sinais. Fundação Calouste Gulbenkian.

Conference or Workshop Item

Cardoso, Eduardo and Batista, Arnaldo and Rodrigues, Rui and Ortigueira, Manuel and Bárbara, Cristina and Martinho, Cristina and Rato, Raul (2010) A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_41. (ISI Web of Science).

Nascimento, Bruno and Batista, Arnaldo and Alves, Luis Brandão and Ortigueira, Manuel and Rato, Raul (2010) MicroECG: An Integrated Platform for the Cardiac Arrythmia Detection and Characterization. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_40. (ISI Web of Science).

Gomes, Rui and Batista, Arnaldo and Ortigueira, Manuel and Rato, Raul and Baldeiras, Marco (2010) Railscan: A Tool for the Detection and Quantification of Rail Corrugation. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_44. (ISI Web of Science).

Coito, Fernando and Ortigueira, Manuel (2008) Fractional Controller Design Trough Multi-Objective Optimization. [Paper]. In: 8th Portuguese Conference on Automatic Control – CONTROLO’2008, 21 - 23 July 2008, Vila Real - Portugal.

Ortigueira, Manuel (2008) The Fractional Quantum Derivative and the Generalised Euler-Cauchy Equation. [Paper]. In: 2nd Conference on Nonlinear Science and Complexity, NSC08, 28-31 Jul 2008, Porto, Portugal.

Ortigueira, Manuel and Coito, Fernando (2008) The Initial Conditions of Riemann-Liouville and Caputo Derivatives. [Other]. In: 6th EUROMECH Conference ENOC 2008, 30 June - 4July 2008, Saint Petersburg - RUSSIA.

Ortigueira, Manuel (2007) A Non Integer Order Quantum Derivative. [Paper]. In: Symposium on Applied Fractional Calculus (SAFC07), October 15-17, Industrial Engineering School (University of Extremadura), Badajoz (Spain).

Ortigueira, Manuel and Coito, Fernando (2007) Revisiting the Initial Conditions Problem in Fractional Linear Systems. [Other]. In: Symposium on Applied Fractional Calculus (SAFC07), October 15-17, Industrial Engineering School (University of Extremadura), Badajoz (Spain).

Xanthopoulos, P. and Golemati, S. and Sakkalis, V. and Ktonas, P. Y. and Ortigueira, Manuel and Zervakis, M. and Paparrigopoulos, T. and Tsekou, H. and Soldatos, C. R. (2006) Comparative analysis of time-frequency methods estimating the time-varying microstructure of sleep EEG spindles. [Paper]. In: Information Technology Applications in Biomedicine, 26-28 Oct. 2006, Ioannina - Epirus, Greece.

Ortigueira, Manuel and Batista, Arnaldo (2006) On the fractional derivative of stationary stochastic processes. [Paper]. In: CST2006 & ECT2006 Conferences, 12-15 Sept 2006, Gran Canaria (ES).

Ortigueira, Manuel (2006) Fractional Centred Differences and Derivatives. [Other]. In: Proceedings of the 2nd IFAC Workshop on Fractional Differentiation and its Applications, Julho 2006, Porto.

Ortigueira, Manuel (2005) Fractional Differences Integral Representation and its use to define Fractional Differintegrations. [Paper]. In: the ENOC-2005, Fifth EUROMECH Nonlinear Dynamics Conference, 07-12 Aug 2005, Eindhoven University of Technology, The Netherlands.

Ortigueira, Manuel (2005) A new look at the differintegration definition. [Paper]. In: ENOC-2005, Fifth EUROMECH Nonlinear Dynamics Conference, 07-12 Aug 2005, Eindhoven University of Technology, The Netherlands.

Pinto, I. V. and Alves, L. B. and Ortigueira, Manuel and Batista, Arnaldo (2005) ECG Wave Detector and Delineation with Wavelets. [Paper]. In: International Conference on Computational Intelligence in Medicine and Healthcare, CIMED 2005, Costa Caparica (PT).

Rato, Raul and Ortigueira, Manuel (2005) A Modified EMD Algorithm for Application in Biomedical Signal Processing. [Paper]. In: International Conference on Computational Intelligence in Medicine and Healthcare, CIMED 2005, Costa Caparica (PT).

Ricardo, C. N. and Gerald, J. A. and Ortigueira, Manuel (2005) Analysis of New Quasi-Orthogonal BCH-Derived Sequences for CDMA Applications. [Paper]. In: XX Conference on Design of Circuits and Integrated Systems (DCIS'05), 23-25 Nov 2005, Lisboa, Portugal.

Ortigueira, Manuel and Tenreiro-Machado, J.A. and Sá da Costa, J. (2004) Considerations about the choice of a differintegrator. [Paper]. In: International Conference on Computacional Cybernetics, 30 Aug - 01 Sept 2004, Vienna. (ISI Web of Science).

Ortigueira, Manuel and Serralheiro, A.J. (2004) New Insights into Pseudo-Fractional ARMA Modelling. [Paper]. In: International Conference on Computacional Cybernetics, 30 Aug - 01 Sept 2004, Vienna University of Technology. (ISI Web of Science).

Unterweissacher, Martin and Goes, João and Paulino, Nuno and Evans, Guiomar and Ortigueira, Manuel (2003) Efficient Digital Self-Calibration of Video-Rate Pipeline ADCs using White Gaussian Noise. [Paper]. In: IEEE International Symposium on Circuits and Systems, Bangkok, Thailand. (ISI Web of Science).

Carvoeiras, P. and Rodrigues, M. and Batista, Arnaldo and Ortigueira, Manuel (2003) Um software protótipo para Diagnóstico da Fibrilhação Auricular. [Paper]. In: XXIV Congresso Português de Cardiologia.

Ortigueira, Manuel (2002) A new approach to the initial value problem. [Other]. In: 5th Portuguese Conference on Automatic Control, September, 5-7, 2002, Aveiro, Portugal.

Journal Editor

Ortigueira, Manuel and Machado, J. A., eds (2003) Special Issue on Fractional signal Processing and applications. Signal Processing, 83 (11), pp. 2285-2286. ISSN 0165-1684. (ISI Web of Science, Citations: 31).

Thesis

Cardoso, Eduardo (2010) Classificação automática do sono: contribuição utilizando distância de itakura-saito e wavelets. Batista, Arnaldo and Ortigueira, Manuel and Rodrigues, Rui (supervisors). Masters thesis, FCT-UNL.

Simons, Lara (2009) Automatic sleep apnea detection and sleep classification using the ECG and the Sp02 signals. Batista, Arnaldo and Ortigueira, Manuel (supervisors). Masters thesis, FCT-UNL.

Nascimento, Bruno (2009) MicroECG: an integrated platform for the cardiac arrythmia detection and characterization. Batista, Arnaldo and Alves, Luís and Ortigueira, Manuel (supervisors). Masters thesis, FCT-UNL.

Baía, Pedro (2009) Processamento de sinais ECG: Variabilidade da frequência cardíaca. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

Barreiros, Diogo (2008) Detecção e análise do Potencial Evocado P300. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

Leitão, Diogo N. (2008) Análise de Fusos do Sono: decomposição e desmodulação de sinal. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.