Photo of Manuel D. Ortigueira
  • Portugal

Accepting PhD Students

  • 2132 Citations
  • 23 h-Index
1984 …2019

Research output per year

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Research Output at NOVA

Article

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

30 Citations (Scopus)

Riesz potential versus fractional Laplacian

Ortigueira, M. D., Laleg-Kirati, T. M. & Machado, J. T., 1 Sep 2014, In : Journal of Statistical Mechanics: Theory and Experiment. stacks.iop.org/JSTAT/2014/P09032, NA, p. 1-11

Research output: Contribution to journalArticle

7 Citations (Scopus)

Sleep Spindles Detection: a Mixed Method using STFT and WMSD

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2012, In : International Journal Of Bioelectromagnetism. 14, 4, p. 229-233

Research output: Contribution to journalArticle

Steady-state response of constant coefficient discrete-time differential systems

Ortigueira, M. D., Rivero, M. & Trujillo, J. J., 1 Jan 2016, In : Journal of King Saud University - Science. 28, 1, p. 29-32 4 p.

Research output: Contribution to journalArticle

Open Access
2 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
37 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

Ortigueira, M. D., 1 Apr 2012, In : International Journal of Bifurcation and Chaos. 22, 4, p. 9 pages

Research output: Contribution to journalArticle

Open Access
14 Citations (Scopus)
30 Citations (Scopus)
4 Citations (Scopus)

Variable order fractional systems

Ortigueira, M. D., Valério, D. & Machado, J. T., 15 Jun 2019, In : Communications In Nonlinear Science And Numerical Simulation. 71, p. 231-243 13 p.

Research output: Contribution to journalArticle

21 Citations (Scopus)

What is a fractional derivative?

Ortigueira, M. D. & Tenreiro Machado, J. A., Jul 2015, In : Journal of Computational Physics. 293, SI, p. 4-13 10 p.

Research output: Contribution to journalArticle

174 Citations (Scopus)
Book

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

Book/Film/Article review

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
12 Citations (Scopus)
Chapter

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

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 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

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
Comment/debate

A critical analysis of the Caputo–Fabrizio operator

Ortigueira, M. D. & Machado, J. T., 1 Jun 2018, In : Communications In Nonlinear Science And Numerical Simulation. 59, p. 608-611 4 p.

Research output: Contribution to journalComment/debate

Open Access
File
39 Citations (Scopus)
33 Downloads (Pure)
Open Access
File
3 Downloads (Pure)
Conference article

Fractional model of the electrochemical capacitor relaxation phenomenon

Martynyuk, V., Ortigueira, M., Fedula, M. & Savenko, O., 1 Aug 2018, In : Bulletin of the Polish Academy of Sciences: Technical Sciences. 66, 4, p. 441-448 8 p.

Research output: Contribution to journalConference article

Open Access
1 Citation (Scopus)

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

Conference contribution

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)

An alternative method for ARMA(p, q) model characterization of multipath fading channels

Mera, D., Tavares, G. & Ortigueira, M., 1 Jul 2015, 2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings. Institute of Electrical and Electronics Engineers Inc., Vol. 2015. 7145681

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

1 Citation (Scopus)

A New Approach to Rational Discrete-Time Approximations to Continuous-Time Fractional-Order Systems

Ortigueira, M. D. & DEE Group Author, 1 Jan 2012, IFIP Advances in Information and Communication Technology. Vol. 372. p. 251-258

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

Open Access

A New Look into the Discrete-Time Fractional Calculus: Derivatives and Exponentials

Ortigueira, M. D., 1 Jan 2013, Fractional Differentiation and its Applications. p. 629-634

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

Open Access
7 Citations (Scopus)

A New Look into the Discrete-Time Fractional Calculus: Transform and Linear Systems

Coito, F. J. A. V. D. & Ortigueira, M. D., 1 Jan 2013, Workshop on Fractional Differentiation and its Applications. p. 635-640

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

Open Access
5 Citations (Scopus)

A Relation Between the Fractional Derivative and the Hilbert Transform

Ortigueira, M. D. & DEE Group Author, 1 Jan 2012, Mathmod - International Conference on Mathematical Modelling. p. 597-599

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

Open Access

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

ARMA Modelling for Sleep Disorders Diagnose

Batista, A. M. G. & Ortigueira, M. D., 1 Jan 2013, IFIP Advances in Information and Communication Technology. Vol. 394. p. 271-278

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

Open Access
1 Citation (Scopus)

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)

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)

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 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

6 Citations (Scopus)

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

16 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)

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

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

New results on fractional linear prediction

Ortigueira, M. D. & Matos, C. J. C., 31 Mar 2015, 2001 European Control Conference, ECC 2001. Institute of Electrical and Electronics Engineers Inc., p. 1752-1757 6 p. 7076174

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

Observability and Controllability of Fractional Linear Dynamical Systems

Ortigueira, M. D., 1 Jan 2013, IFAC Joint Conference SSSC. p. 893-898

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

Open Access
5 Citations (Scopus)

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 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 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)

On the 'walking dead' derivatives: Riemann-Liouville and Caputo

Ortigueira, M. D., 25 Nov 2014, 2014 International Conference on Fractional Differentiation and Its Applications, ICFDA 2014. Institute of Electrical and Electronics Engineers Inc., 6967433

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

8 Citations (Scopus)

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)

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)

Short Time Fourier Transform and Automatic Visual Scoring for the Detection of Sleep Spindles

Batista, A. M. G., Ortigueira, M. D. & DEE Group Author, 1 Jan 2012, IFIP Advances in Information and Communication Technology. Vol. 372. p. 267-272

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

Open Access

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