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

1984

FRAMEWORK FOR THE EVALUATION OF SPECTRAL ANALYSIS TECHNIQUES

Ortigueira, M. D. & Tribolet, J. M., 1 Jan 1984, In : ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. 2, p. 22. 7. 1-22. 7. 4

Research output: Contribution to journalConference article

2002

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)
2003

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)

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)
2004

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)

Considerations about the choice of a differintegrator

Ortigueira, M. D., Machado, J. A. T. & Da Costa, J. S., 2004, ICCC 2004 - Second IEEE International Conference on Computational Cybernetics, Proceedings. Elmenreich, W., Haidinger, W. & Machado, J. A. T. (eds.). p. 385-389 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

New insights into pseudo-fractional ARMA modelling

Ortigueira, M. D. & Serralheiro, A. J., 2004, ICCC 2004 - Second IEEE International Conference on Computational Cybernetics, Proceedings. Elmenreich, W., Haidinger, W. & Machado, J. A. T. (eds.). p. 391-394 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2006

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 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)

Fractional calculus applications in signals and systems

Ortigueira, M. D. & Machado, J. A. T., Oct 2006, In : Signal Processing. 86, 10, p. 2503-2504 2 p.

Research output: Contribution to journalEditorial

77 Citations (Scopus)

Fractional central differences and derivatives

Ortigueira, M. D., 2006, 2nd IFAC Workshop on Fractional Differentiation and its Applications, FDA 2006 - Final Program. PART 1 ed. Vol. 2. p. 58-63 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)
2007

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

Potential dementia biomarkers based on the time-varying micro structure of sleep EEG spindles

Ktonas, P. Y., Golemati, S., Xanthopoulos, P., Sakkalis, V., Ortigueira, M. D., Tsekou, H., Zervakis, M., Paparrigopoulos, T. & Soldates, C. R., 2007, 29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07. p. 2464-2467 4 p. 4352827

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)
2008

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)

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)

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)

Identifying a transfer function from a frequency response

Ortigueira, M. D., Valério, D. & Da Costa, J. S., 2008, 2007 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC2007. Vol. 5 PART B. p. 1405-1414 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 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 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)
2009

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)

FILTERS: Fractional vs Integer order

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2009, -. p. -

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fractional Derivatives and Linear Systems

Ortigueira, M. D. & DEE Group Author, 1 Jan 2009, Mobile Computing Research and Applications. Nova Science Publishers, Inc., p. 219-269 (Computer Science, Technology and Application).

Research output: Chapter in Book/Report/Conference proceedingChapter

ON THE LINEAR SCALE FRACTIONAL SYSTEMS An Application of the Fractional Quantum Derivative

Ortigueira, M. D. & DEE Group Author, 1 Jan 2009, ICINCO 2009: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INFORMATICS IN CONTROL, AUTOMATION AND ROBOTICS. p. 196-202

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

The Empirical Mode Decomposition an Useful Tool for Signal Analysis

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2009, New Signal Processing Research. Nova Science Publishers, Inc., p. 455-475

Research output: Chapter in Book/Report/Conference proceedingChapter

29 Citations (Scopus)
2010

A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance

Rodrigues, R. A. P., Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, IFIP Advances in Information and Communication Technology. p. 374-381

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
2 Citations (Scopus)

Are RL and C derivatives really useful?

Coito, F. J. A. V. D., Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, IFAC-FDA. p. -

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fractional Filters: An Optimization Approach

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, IFIP Advances in Information and Communication Technology. Vol. 314. p. 361-366

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
4 Citations (Scopus)

Fractional Lower Order Moments in NMR: A New Measure of Tissue Complexity

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, International Symposium Mathematical Methods in Engineering. p. -

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Generalized GL, Caputo, and Riemann-Liouville derivatives for analytic functions

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, International Conference on Nonlinear Science and Complexity. p. 28-31

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Generalized GL Fractional Derivative and its Laplace and Fourier Transform

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, PROCEEDINGS OF ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE. p. 1227-1231

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

MicroECG: An Integrated Platform for the Cardiac Arrythmia Detection and Characterization

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, IFIP Advances in Information and Communication Technology. Vol. 314. p. 367-373

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access

On a not so Fast Fourier Transform

Coito, F. J. A. V. D., Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, -. p. -

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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)

Railscan: A Tool for the Detection and Quantification of Rail Corrugation

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, IFIP Advances in Information and Communication Technology. Vol. 314. p. 401-408

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
6 Citations (Scopus)

System initial conditions vs derivative initial conditions

Coito, F. J. A. V. D., Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, In : Computers & Mathematics With Applications. 59, 5, p. 1782-1789

Research output: Contribution to journalArticle

Open Access
32 Citations (Scopus)

The fractional quantum derivative and its integral representations

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, In : Communications In Nonlinear Science And Numerical Simulation. 15, 4, p. 956-962

Research output: Contribution to journalArticle

Open Access
15 Citations (Scopus)

The incremental ratio based causal Fractional Calculus for analytic functions

Ortigueira, M. D. & DEE Group Author, 1 Jan 2010, IFAC-FDA. p. -

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2011

ARMA Modelling of Sleep Spindles

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2011, IFIP Advances in Information and Communication Technology. p. 341-348

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
3 Citations (Scopus)
Open Access
12 Citations (Scopus)

Fractional Calculus for Scientists and Engineers

Ortigueira, M. D. & DEE Group Author, 1 Jan 2011, Dordrecht: Springer. (Lecture Notes in Electrical Engineering; no. 84)

Research output: Book/ReportBook

Fractional signals and systems

Ortigueira, M. D., 1 Jan 2011, In : Signal Processing. 91, 3, p. 349-349

Research output: Contribution to journalBook/Film/Article review

Open Access
11 Citations (Scopus)
15 Citations (Scopus)

On a Unified Fractional Derivative

Ortigueira, M. D. & DEE Group Author, 1 Jan 2011, Proceedings of the 7th International ASME/IEEE Conference on Mechatronics & Embedded Systems and Applications. p. -

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
1 Citation (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)

Sleep spindles: Decomposition, parameterization and applications

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2011, IEEE Conference on Signal Processing and Communications Applications (SIU). p. 1181-1184

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access

The causal fractional derivatives

Ortigueira, M. D., 2011, Fractional Calculus for Scientists and Engineers. Vol. 84 LNEE. p. 5-41 37 p. (Lecture Notes in Electrical Engineering; vol. 84 LNEE).

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

The Fractional Quantum Derivative and the Fractional Linear Scale Invariant Systems

Ortigueira, M. D. & DEE Group Author, 1 Jan 2011, Fractional Calculus for Scientists and Engineers. Berlin: Springer-Verlag, Vol. 84. p. 123-144 (Lecture Notes in Electrical Engineering).

Research output: Chapter in Book/Report/Conference proceedingChapter

Open Access
2012

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