Photo of Manuel D. Ortigueira
  • Portugal

Accepting PhD Students

  • 2032 Citations
  • 22 h-Index
1984 …2019

Research output per year

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Research Output at NOVA

Article

A coherent approach to non-integer order derivatives

Ortigueira, M. D., Oct 2006, In : Signal Processing. 86, 10, p. 2505-2515 11 p.

Research output: Contribution to journalArticle

64 Citations (Scopus)

A fractional linear system view of the fractional brownian motion

Ortigueira, M. D. & Batista, A. G., Dec 2004, In : Nonlinear Dynamics. 38, 1-4, p. 295-303 9 p.

Research output: Contribution to journalArticle

22 Citations (Scopus)

A generalized power series and its application in the inversion of transfer functions

Ortigueira, M. D., Trujillo, J. J., Martynyuk, V. I. & Coito, F. J. A. V. D., Feb 2015, In : Signal Processing. 107, p. 238-245 8 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

A multichannel time–frequency and multi-wavelet toolbox for uterine electromyography processing and visualisation

Batista, A., Najdi, S., Godinho, D. M., Martins, C., Serrano, M. D. F. C., Ortigueira, M. D. & Rato, R. T., 1 Sep 2016, In : Computers in Biology and Medicine. 76, p. 178-191 14 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

An Automatic Sleep Spindle Detector based on WT, STFT and WMSD

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2012, In : Proceedings Of World Academy Of Science, Engineering And Technology. 68, NA, p. 2154-2157

Research output: Contribution to journalArticle

A new least-squares approach to differintegration modeling

Ortigueira, M. D. & Serralheiro, A. J., Oct 2006, In : Signal Processing. 86, 10, p. 2582-2591 10 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)

A new look at the fractionalization of the logistic equation

Ortigueira, M. & Bengochea, G., 1 Feb 2017, In : Physica A: Statistical Mechanics and its Applications. 467, p. 554-561 8 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)

A new symmetric fractional B-spline

Ortigueira, M. D., Nov 2003, In : Signal Processing. 83, 11, p. 2311-2318 8 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

An introduction to the fractional continuous-time linear systems: The 21st century systems

Ortigueira, M. D., Sep 2008, In : IEEE Circuits and Systems Magazine. 8, 3, p. 19-26 8 p., 4609961.

Research output: Contribution to journalArticle

155 Citations (Scopus)

An operational approach to solve fractional continuous–time linear systems

Bengochea, G. & Ortigueira, M. D., Mar 2017, In : International Journal of Dynamics and Control. 5, 1, p. 61-71 11 p.

Research output: Contribution to journalArticle

Open Access
4 Citations (Scopus)

A real regularised fractional derivative

Ortigueira, M. D. & DEE Group Author, 1 Jan 2012, In : Signal, Image And Video Processing. 6, SI3, p. 351-358

Research output: Contribution to journalArticle

Open Access
10 Citations (Scopus)

A recursive-operational approach with applications to linear differential systems

Bengochea, G. & Ortigueira, M., 1 Dec 2016, In : Journal of Applied Analysis. 22, 2, p. 131-139 9 p.

Research output: Contribution to journalArticle

Open Access
3 Citations (Scopus)
4 Citations (Scopus)

A Sliding Window Empirical Mode Decomposition for Long Signals Algorithm

Ortigueira, M. D., Sep 2016, In : Sensors & Transducers Journal. 204, 9, p. 21-28 8 p.

Research output: Contribution to journalArticle

A unified approach to fractional derivatives

Ortigueira, M. D. & DEE Group Author, 1 Jan 2012, In : Communications In Nonlinear Science And Numerical Simulation. 17, 12, p. 5151-5157

Research output: Contribution to journalArticle

Open Access
24 Citations (Scopus)

Comments on “Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions”

Ortigueira, M. D. & DEE Group Author, 1 Jan 2009, In : Applied Mathematical Modelling. 33, 5, p. 2534-2537

Research output: Contribution to journalArticle

Open Access
7 Citations (Scopus)

Comments on “The fractional Laplace transform”

Ortigueira, M. D., 2014, In : Signal, Image And Video Processing. 8, 3, p. 489-490

Research output: Contribution to journalArticle

1 Citation (Scopus)
Open Access
12 Citations (Scopus)

Discrete-time differential systems

Ortigueira, M. D., Coito, F. J. A. V. D. & Trujillo, J. J., Feb 2015, In : Signal Processing. 107, SI, p. 198-217 20 p.

Research output: Contribution to journalArticle

36 Citations (Scopus)

Exponentials and Laplace transforms on nonuniform time scales

Ortigueira, M. D., Torres, D. F. M. & Trujillo, J. J., 1 Oct 2016, In : Communications In Nonlinear Science And Numerical Simulation. 39, p. 252-270 19 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Fractional central differences and derivatives

Ortigueira, M. D., Sep 2008, In : JOURNAL OF VIBRATION AND CONTROL. 14, 9-10, p. 1255-1266 12 p.

Research output: Contribution to journalArticle

50 Citations (Scopus)

Fractional derivatives: The perspective of system theory

Ortigueira, M. D. & Machado, J. T., 5 Feb 2019, In : Mathematics. 7, 2, 150.

Research output: Contribution to journalArticle

Open Access
File
12 Citations (Scopus)

Fractional derivatives and periodic functions

Ortigueira, M. D., Machado, J. T. & Trujillo, J. J., 1 Mar 2017, In : International Journal of Dynamics and Control. 5, 1, p. 72-78 7 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Fractional discrete-time signal processing: Scale conversion and linear prediction

Ortigueira, M. D., Matos, C. J. C. & Piedade, M. S., Jul 2002, In : Nonlinear Dynamics. 29, 1-4, p. 173-190 18 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Fractional model of an electrochemical capacitor

Martynyuk, V. & Ortigueira, M., 2015, In : Signal Processing. 107, p. 355-360 6 p.

Research output: Contribution to journalArticle

From a generalised Helmholtz decomposition theorem to fractional Maxwell equations

Ortigueira, M. D., Rivero, M. & Trujillo, J. J., May 2015, In : Communications In Nonlinear Science And Numerical Simulation. 22, 1-3, p. 1036-1049 14 p.

Research output: Contribution to journalArticle

22 Citations (Scopus)
15 Citations (Scopus)

Identifying a transfer function from a frequency response

Valério, D., Ortigueira, M. D. & da Costa, J. S., Apr 2008, In : Journal Of Computational And Nonlinear Dynamics. 3, 2, 021207.

Research output: Contribution to journalArticle

55 Citations (Scopus)

Integer/fractional decomposition of the impulse response of fractional linear systems

Ortigueira, M. D., Tenreiro Machado, J., Rivero, M. & Trujillo, J. J., 15 Apr 2015, In : Signal Processing. 114, p. 85-88 4 p., 5738.

Research output: Contribution to journalArticle

10 Citations (Scopus)

New quasi-orthogonal BCH-derived sequences for CDMA applications

Ricardo, C. N. E., Ortigueira, M. D. & Gerald, J. A. B., Nov 2007, In : European Transactions on Telecommunications. 18, 7, p. 803-810 8 p.

Research output: Contribution to journalArticle

Novel polarization index evaluation formula and fractional-order dynamics in electric motor insulation resistance

Gonzalez, E. A., Petráš, I. & Ortigueira, M. D., 26 Jun 2018, In : Fractional Calculus and Applied Analysis. 21, 3, p. 613-627 15 p.

Research output: Contribution to journalArticle

Open Access
1 Citation (Scopus)

On fractional vectorial calculus

Ortigueira, M. D. & Machado, J. T., 1 Aug 2018, In : Bulletin of the Polish Academy of Sciences: Technical Sciences. 66, 4, p. 389-402 14 p.

Research output: Contribution to journalArticle

Open Access
6 Citations (Scopus)

On the computation of the multidimensional Mittag-Leffler function

Ortigueira, M. D., Lopes, A. M. & Machado, J. A. T., 1 Dec 2017, In : Communications In Nonlinear Science And Numerical Simulation. 53, p. 278-287 10 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

On the Estimation of the Autocorrelation Function

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, In : Discussiones Mathematicae: Probability and Statistics. 38, NA, p. 85-97

Research output: Contribution to journalArticle

On the Fractional Linear Scale Invariant Systems

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, In : Ieee Transactions On Signal Processing. 58, 12, p. 6406-6410

Research output: Contribution to journalArticle

Open Access
6 Citations (Scopus)

On the fractional signals and systems

Ortigueira, M. D. & DEE Group Author, 1 Jan 2011, In : Signal Processing. 91, 3, p. 350-371

Research output: Contribution to journalArticle

Open Access
171 Citations (Scopus)

On the HHT, its problems, and some solutions

Rato, R. T., Ortigueira, M. D. & Batista, A. M. G., Aug 2008, In : Mechanical Systems and Signal Processing. 22, 6, p. 1374-1394 21 p.

Research output: Contribution to journalArticle

216 Citations (Scopus)

On the initial conditions in continuous-time fractional linear systems

Ortigueira, M. D., Nov 2003, In : Signal Processing. 83, 11, p. 2301-2309 9 p.

Research output: Contribution to journalArticle

56 Citations (Scopus)

On the Numerical Computation of the Mittag-Leffler Function

Ortigueira, M. D., Lopes, A. M. & Tenreiro Machado, J., Oct 2019, In : International Journal of Nonlinear Sciences and Numerical Simulation. 20, 6, p. 725-736

Research output: Contribution to journalArticle

1 Citation (Scopus)

On the particular solution of constant coefficient fractional differential equations

Ortigueira, M. D., 19 Aug 2014, In : Applied Mathematics and Computation. 245, NA, p. 255-260

Research output: Contribution to journalArticle

5 Citations (Scopus)

On the recursive solution to the normal equations: Some other results

Ortigueira, M. D., Mar 2014, In : Ieee Signal Processing Magazine. 31, 2, p. 140-142 3 p., 6739188.

Research output: Contribution to journalArticle

1 Citation (Scopus)

On the relation between the fractional Brownian motion and the fractional derivatives

Ortigueira, M. D. & Batista, A. M. G., 11 Feb 2008, In : Physics Letters. A, NA, p. 958-968 11 p.

Research output: Contribution to journalArticle

40 Citations (Scopus)

Operational method for the solution of ordinary differential equations using Hermite series

Bengochea, G., Verde–star, L. & Ortigueira, M., 1 Jan 2018, In : Mathematical Communications. 23, 2, p. 279-293 15 p.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)

Operational Solution to the Nonlinear Klein-Gordon Equation

Bengochea, G., Verde-Star, L. & Ortigueira, M., 1 Jan 2018, In : Communications in Theoretical Physics. 69, 5, p. 506-512 7 p.

Research output: Contribution to journalArticle

Open Access
File

Recursive-operational method to solve fractional linear systems

Bengochea, G. & Ortigueira, M., 2016, (Accepted/In press) In : Computers and Mathematics with Applications.

Research output: Contribution to journalArticle

Reducing bias in fractional order impedance estimation for lung function evaluation

Copot, D., De Keyser, R., Derom, E., Ortigueira, M. & Ionescu, C. M., 1 Jan 2018, In : Biomedical Signal Processing and Control. 39, p. 74-80 7 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Rhapsody in fractional

Machado, J. T., Lopes, A. M., Duarte, F. B. M., Ortigueira, M. D. & Rato, R. T., 2014, In : Fractional Calculus and Applied Analysis. 17, 4, p. 1188-1214

Research output: Contribution to journalArticle

29 Citations (Scopus)