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Identificação

Identificação pessoal

Nome completo
Manuel Duarte Ortigueira

Nomes de citação

  • Ortigueira, Manuel Duarte

Identificadores de autor

Ciência ID
391A-337F-6839
ORCID iD
0000-0003-4270-3284

Websites

Formação
Grau Classificação
1984/12/04
Concluído
 Engenharia Electrotécnica e de Computadores (Doutoramento)
Especialização em Sem especialidade
Universidade de Lisboa Instituto Superior Técnico, Portugal
"Metodologia, Implementação e Avaliação em Análise Espectral" (TESE/DISSERTAÇÃO)
 Distinção e Louvor
Percurso profissional

Docência no Ensino Superior

Categoria Profissional
Instituição de acolhimento 		Empregador
2016 - 2018 Professor Associado (Docente Universitário) Universidade Nova de Lisboa, Portugal
2013 - 2016 Professor Associado (Docente Universitário) Universidade Nova de Lisboa Faculdade de Ciências e Tecnologia, Portugal

Outros

Categoria Profissional
Instituição de acolhimento 		Empregador
1997/02/01 - Atual Aposentado Universidade Nova de Lisboa UNINOVA Instituto de Desenvolvimento de Novas Tecnologias, Portugal
Produções

Publicações

Artigo em conferência
  1. Francisco Neves; Raul Rato; Manuel Duarte Ortigueira. "Trans-Boolean Cyber Physical Systems". 2023.
    10.1007/978-3-031-36007-7_22
  2. Filipa Esgalhado; Arnaldo Batista; V. B. Vassilenko; Manuel Duarte Ortigueira. "Real-Time PPG-Based HRV Implementation Using Deep Learning and Simulink". 2022.
    10.1007/978-3-031-07520-9_10
  3. Duarte Valério; Manuel Duarte Ortigueira. "Matsuda Method Adapted to Identify Fractional Order Transfer Functions". 2022.
    10.1007/978-3-031-04383-3_22
  4. Gabriel Bengochea; Manuel Duarte Ortigueira. "Operational Calculus with Applications to Generalized Two-Sided Fractional Derivative". 2022.
    10.1007/978-3-031-04383-3_17
  5. Manuel Duarte Ortigueira. "The Complex Order Fractional Derivatives and Systems are Non Hermitian". 2022.
    10.1007/978-3-031-04383-3_3
  6. Ortigueira, Manuel D.. "The Complex Order Fractional Derivatives and Systems are Non Hermitian". 2022.
    https://doi.org/10.1007/978-3-031-04383-3_3
  7. Filipa E. Cardoso; V. B. Vassilenko; Arnaldo Batista; Paulo Bonifácio; Sergio Rico Martin; Juan Muñoz-Torrero; Manuel Duarte Ortigueira. "Improvements on Signal Processing Algorithm for the VOPITB Equipment". 2021.
    10.1007/978-3-030-78288-7_31
  8. Filipa E. Cardoso; Arnaldo Batista; V. B. Vassilenko; Andreia Serrano; Manuel Duarte Ortigueira. "Idle Tone Detection in Biomedical Signals Using Time-Frequency Techniques". 2020.
    10.1007/978-3-030-45124-0_44
  9. Manuel Duarte Ortigueira. "On the Singular Steady-State Output in Discrete-Time Linear Systems". 2016.
  10. Manuel Duarte Ortigueira. "An Improved Empirical Mode Decomposition for Long Signals". 2016.
  11. Manuel Duarte Ortigueira. "On the computation of the Mittag-Leffler function". 2016.
  12. Ortigueira; Manuel; Troch; Inge. "A relation between the fractional derivative and the Hilbert transform". 2012.
    10.3182/20120215-3-at-3016.00106
  13. Manuel Duarte Ortigueira; DEE Group Author. "A Relation Between the Fractional Derivative and the Hilbert Transform". 2012.
    10.3182/20120215-3-AT-3016.00106
  14. Manuel Duarte Ortigueira; DEE Group Author. "Fractional Lower Order Moments in NMR: A New Measure of Tissue Complexity". 2010.
  15. Fernando Coito; Manuel Duarte Ortigueira; DEE Group Author. "Are RL and C derivatives really useful?". 2010.
  16. Manuel Duarte Ortigueira; DEE Group Author. "Generalized GL, Caputo, and Riemann-Liouville derivatives for analytic functions". 2010.
  17. Manuel Duarte Ortigueira; DEE Group Author. "The incremental ratio based causal Fractional Calculus for analytic functions". 2010.
  18. Fernando Coito; Manuel Duarte Ortigueira; DEE Group Author. "On a not so Fast Fourier Transform". 2010.
  19. Arnaldo Batista; Manuel Duarte Ortigueira; DEE Group Author. "FILTERS: Fractional vs Integer order". 2009.
  20. Ortigueira, M.D.; Ktonas, P. Y.; Golemati, S.; Xanthopoulos, P.; Ktonas, P.Y.; Sakkalis, V.; Tsekou, H.; et al. "Potential dementia biomarkers based on the time-varying microstructure of sleep EEG spindles". 2007.
    10.1109/IEMBS.2007.4352827
  21. Ortigueira, M.D.; Xanthopoulos, P.; Golemati, S.; Sakkalis, V.. "Comparative analysis of time-frequency methods estimating the time-varying microstructure of sleep EEG spindles". 2006.
  22. Ortigueira, Manuel Duarte; Matos, Carlos J. C.. "New results on fractional linear prediction". 2001.
    10.23919/ecc.2001.7076174
  23. Ortigueira, Manuel Duarte; Matos, J.C.; Piedade, M.S.. "Fractional signal processing: scale conversion". 2001.
Artigo em revista
  1. Gabriel Bengochea; Manuel Ortigueira; Fernando Arroyo-Cabañas. "On the Inversion of the Mellin Convolution". Mathematics (2025): https://doi.org/10.3390/math13030432.
    10.3390/math13030432
  2. Manuel Duarte Ortigueira. "Fractional Calculus of Piecewise Continuous Functions". Fractal and Fractional (2025): https://doi.org/10.3390/fractalfract9020075.
    10.3390/fractalfract9020075
  3. Manuel Duarte Ortigueira; Gabriel Bengochea. "On Lebesgue Constants". Axioms (2024): https://doi.org/10.3390/axioms13080505.
    10.3390/axioms13080505
  4. Manuel Duarte Ortigueira. "A Factory of Fractional Derivatives". Symmetry (2024): https://www.mdpi.com/2073-8994/16/7/814.
    10.3390/sym16070814
  5. Manuel D. Ortigueira. "Principles of fractional signal processing". Digital Signal Processing (2024): https://doi.org/10.1016/j.dsp.2024.104490.
    10.1016/j.dsp.2024.104490
  6. Duarte Valério; Manuel D. Ortigueira. "Variable-Order Fractional Scale Calculus". Mathematics (2023): https://doi.org/10.3390/math11214549.
    10.3390/math11214549
  7. Manuel Duarte Ortigueira; Gabriel Bengochea. "On the Fractional Derivative Duality in Some Transforms". Mathematics (2023): https://doi.org/10.3390/math11214464.
    10.3390/math11214464
  8. Gabriel Bengochea; Manuel Duarte Ortigueira. "An Operational Approach to Fractional Scale-Invariant Linear Systems". Fractal and Fractional (2023): https://doi.org/10.3390/fractalfract7070524.
    10.3390/fractalfract7070524
  9. Manuel Duarte Ortigueira. "Discrete-Time Fractional Difference Calculus: Origins, Evolutions, and New Formalisms". Fractal and Fractional (2023): https://doi.org/10.3390/fractalfract7070502.
    10.3390/fractalfract7070502
  10. Manuel D. Ortigueira; Gary W. Bohannan. "Fractional Scale Calculus: Hadamard vs. Liouville". Fractal and Fractional (2023): https://doi.org/10.3390/fractalfract7040296.
    10.3390/fractalfract7040296
  11. Manuel Duarte Ortigueira; Valeriy Martynyuk; Volodymyr Kosenkov; Arnaldo Guimarães Batista. "A New Look at the Capacitor Theory". Fractal and Fractional (2023): https://doi.org/10.3390/fractalfract7010086.
    10.3390/fractalfract7010086
  12. Manuel Duarte Ortigueira; Gabriel Bengochea. "A Simple Solution for the General Fractional Ambartsumian Equation". Applied Sciences (2023): https://doi.org/10.3390/app13020871.
    10.3390/app13020871
  13. Valério, Duarte; Ortigueira, Manuel D.. "Variable-Order Fractional Scale Calculus". (2023): http://hdl.handle.net/10362/163982.
    https://doi.org/10.3390/math11214549
  14. Ortigueira, Manuel D.; Bohannan, Gary W.. "Fractional Scale Calculus". (2023): http://hdl.handle.net/10362/158090.
    https://doi.org/10.3390/fractalfract7040296
  15. Ortigueira, Manuel Duarte. "Discrete-Time Fractional Difference Calculus". (2023): http://hdl.handle.net/10362/158484.
    https://doi.org/10.3390/fractalfract7070502
  16. Bengochea, Gabriel; Ortigueira, Manuel Duarte. "An Operational Approach to Fractional Scale-Invariant Linear Systems". (2023): http://hdl.handle.net/10362/159683.
    https://doi.org/10.3390/fractalfract7070524
  17. Ortigueira, Manuel Duarte; Bengochea, Gabriel. "A Simple Solution for the General Fractional Ambartsumian Equation". (2023): http://hdl.handle.net/10362/155105.
    https://doi.org/10.3390/app13020871
  18. Ortigueira, Manuel Duarte; Martynyuk, Valeriy; Kosenkov, Volodymyr; Batista, Arnaldo Guimarães. "A New Look at the Capacitor Theory". (2023): http://hdl.handle.net/10362/155104.
    https://doi.org/10.3390/fractalfract7010086
  19. Ortigueira, Manuel Duarte; Bengochea, Gabriel. "On the Fractional Derivative Duality in Some Transforms". (2023): http://hdl.handle.net/10362/163980.
    https://doi.org/10.3390/math11214464
  20. Filipa Esgalhado; Valentina Vassilenko; Arnaldo Batista; Manuel Ortigueira. "On the Feasibility of Real-Time HRV Estimation Using Overly Noisy PPG Signals". Computers (2022): https://doi.org/10.3390/computers11120177.
    10.3390/computers11120177
  21. Müfit San; Manuel D. Ortigueira. "Unilateral Laplace Transforms on Time Scales". Mathematics (2022): https://doi.org/10.3390/math10234552.
    10.3390/math10234552
  22. Bengochea Gabriel; Ortigueira Manuel. "Fractional derivative of power type functions". Computational and Applied Mathematics (2022): https://doi.org/10.1007/s40314-022-02081-0.
    10.1007/s40314-022-02081-0
  23. Daniela Martins; Arnaldo Batista; Helena Mouriño; Sara Russo; Filipa Esgalhado; Catarina R. Palma dos Reis; Fátima Serrano; Manuel Ortigueira. "Adaptive Filtering for the Maternal Respiration Signal Attenuation in the Uterine Electromyogram". Sensors (2022): https://doi.org/10.3390/s22197638.
    10.3390/s22197638
  24. Manuel D. Ortigueira. "A New Series Representation and the Laplace Transform for the Lognormal Distribution". Mathematics (2022): https://doi.org/10.3390/math10193474.
    10.3390/math10193474
  25. Filipa Esgalhado; Arnaldo Batista; Valentina Vassilenko; Sara Russo; Manuel Ortigueira. "Peak Detection and HRV Feature Evaluation on ECG and PPG Signals". Symmetry (2022): https://doi.org/10.3390/sym14061139.
    10.3390/sym14061139
  26. Manuel D. Ortigueira. "A New Look at the Initial Condition Problem". Mathematics (2022): https://doi.org/10.3390/math10101771.
    10.3390/math10101771
  27. Martim Almeida; Helena Mouriño; Arnaldo G. Batista; Sara Russo; Filipa Esgalhado; Catarina R. Palma dos Reis; Fátima Serrano; Manuel Ortigueira. "Electrohysterography extracted features dependency on anthropometric and pregnancy factors". Biomedical Signal Processing and Control (2022): https://doi.org/10.1016/j.bspc.2022.103556.
    10.1016/j.bspc.2022.103556
  28. Manuel Duarte Ortigueira; Richard L. Magin. "On the Equivalence between Integer- and Fractional Order-Models of Continuous-Time and Discrete-Time ARMA Systems". Fractal and Fractional 6 5 (2022): 242-242. https://doi.org/10.3390/fractalfract6050242.
    10.3390/fractalfract6050242
  29. Duarte Valério; Manuel D. Ortigueira; António M. Lopes. "How Many Fractional Derivatives Are There?". Mathematics (2022): https://doi.org/10.3390/math10050737.
    10.3390/math10050737
  30. Müfit San; Arnaldo Batista; Sara Russo; Filipa Esgalhado; Catarina R. Palma dos Reis; Fátima Serrano; Manuel Ortigueira. "A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling". Sensors (2022): https://doi.org/10.3390/s22051704.
    10.3390/s22051704
  31. Manuel Duarte Ortigueira; J.A. Tenreiro Machado. "The 21st Century Systems: An Updated Vision of Discrete-Time Fractional Models". IEEE Circuits and Systems Magazine (2022): https://doi.org/10.1109/MCAS.2022.3160908.
    10.1109/MCAS.2022.3160908
  32. Gabriel Bengochea; Luís Verde-Star; Manuel Duarte Ortigueira. "Solution of Equations with q-Derivatives and Ward’s Derivatives Using an Operational Method". Filomat 36 5 (2022): 1487-1498. https://novaresearch.unl.pt/en/publications/baafb9ee-6fd4-4062-a484-03021d4dd7c1.
    10.2298/FIL2205487B
  33. Manuel Duarte Ortigueira; J. Tenreiro Machado. "The 21st Century Systems: An Updated Vision of Continuous-Time Fractional Models". IEEE Circuits and Systems Magazine 22 2 (2022): 36-56. https://novaresearch.unl.pt/en/publications/f2e9e624-ccc2-44bd-9e21-35b6ea098839.
    10.1109/MCAS.2022.3160905
  34. Ortigueira, Manuel D.. "A New Series Representation and the Laplace Transform for the Lognormal Distribution". (2022): http://hdl.handle.net/10362/148296.
    https://doi.org/10.3390/math10193474
  35. San, Müfit; Ortigueira, Manuel D.. "Unilateral Laplace Transforms on Time Scales". (2022): http://hdl.handle.net/10362/148295.
    https://doi.org/10.3390/math10234552
  36. Ortigueira, Manuel Duarte; Magin, Richard L.. "On the Equivalence between Integer-and Fractional Order-Models of Continuous-Time and Discrete-Time ARMA Systems". (2022): http://hdl.handle.net/10362/143502.
    https://doi.org/10.3390/fractalfract6050242
  37. Ortigueira, Manuel Duarte; Machado, J. Tenreiro. "The 21st Century Systems". (2022): http://hdl.handle.net/10362/148648.
    https://doi.org/10.1109/MCAS.2022.3160905
  38. Esgalhado, Filipa; Vassilenko, Valentina; Batista, Arnaldo; Ortigueira, Manuel. "On the Feasibility of Real-Time HRV Estimation Using Overly Noisy PPG Signals". (2022): http://hdl.handle.net/10362/148292.
    https://doi.org/10.3390/computers11120177
  39. Bengochea, Gabriel; Verde-Star, Luís; Ortigueira, Manuel. "Solution of Equations with q-Derivatives and Ward’s Derivatives Using an Operational Method". (2022): http://hdl.handle.net/10362/158000.
    https://doi.org/10.2298/FIL2205487B
  40. Esgalhado, Filipa; Batista, Arnaldo; Vassilenko, Valentina; Russo, Sara; Ortigueira, Manuel. "Peak Detection and HRV Feature Evaluation on ECG and PPG Signals". (2022): http://hdl.handle.net/10362/143506.
    https://doi.org/10.3390/sym14061139
  41. Gabriel, Bengochea; Manuel, Ortigueira. "Fractional derivative of power type functions". (2022): http://hdl.handle.net/10362/148647.
    https://doi.org/10.1007/s40314-022-02081-0
  42. Ortigueira, Manuel D.. "A New Look at the Initial Condition Problem". (2022): http://hdl.handle.net/10362/143916.
    https://doi.org/10.3390/math10101771
  43. Valério, Duarte; Ortigueira, Manuel D.; Lopes, António M.. "How Many Fractional Derivatives Are There?". (2022): http://hdl.handle.net/10362/143802.
    https://doi.org/10.3390/math10050737
  44. Ortigueira, Manuel Duarte; Machado, J. A. Tenreiro. "The 21st Century Systems". (2022): http://hdl.handle.net/10362/148649.
    https://doi.org/10.1109/MCAS.2022.3160908
  45. Manuel Duarte Ortigueira. "An Entropy Paradox Free Fractional Diffusion Equation". Fractal and Fractional 5 4 (2021): 236-236. https://doi.org/10.3390/fractalfract5040236.
    10.3390/fractalfract5040236
  46. Manuel Duarte Ortigueira. "Editorial for Special Issue “Fractional Behavior in Nature 2019”". Fractal and Fractional (2021): https://doi.org/10.3390/fractalfract5040186.
    10.3390/fractalfract5040186
  47. Manuel D. Ortigueira; Gabriel Bengochea; J. Tenreiro Machado. "Substantial, tempered, and shifted fractional derivatives: Three faces of a tetrahedron". Mathematical Methods in the Applied Sciences 44 11 (2021): 9191-9209. https://doi.org/10.1002/mma.7343.
    10.1002/mma.7343
  48. Gabriel Bengochea; Manuel Ortigueira. "Fractional Line Integral". Mathematics (2021): https://doi.org/10.3390/math9101150.
    10.3390/math9101150
  49. Manuel Duarte Ortigueira; Gabriel Bengochea; Manuel D. Ortigueira. "Bilateral Tempered Fractional Derivatives". Symmetry (2021): https://doi.org/10.3390/sym13050823.
    10.3390/sym13050823
  50. Arnaldo Batista; Ricardo Cebola; Filipa Esgalhado; Sara Russo; Catarina Palma dos Reis; Fatima Serrano; V. B. Vassilenko; Manuel Duarte Ortigueira. "The contractiongram: A method for the visualization of uterine contraction evolution using the electrohysterogram". Biomedical Signal Processing and Control 67 (2021): https://novaresearch.unl.pt/en/publications/045bf419-82c6-41a2-82fc-32e4ed6e333d.
    10.1016/j.bspc.2021.102531
  51. Manuel Duarte Ortigueira; José Tenreiro Machado. "A Review of Sample and Hold Systems and Design of a New Fractional Algorithm". Applied Sciences (2020): https://doi.org/10.3390/app10207360.
    10.3390/app10207360
  52. Filipa Esgalhado; Arnaldo G. Batista; Helena Mouriño; Sara Russo; Catarina Palma dos Reis; Fátima Serrano; Valentina Vassilenko; Manuel Duarte Ortigueira. "Automatic Contraction Detection Using Uterine Electromyography". Applied Sciences (2020): https://www.mdpi.com/2076-3417/10/20/7014.
    10.3390/app10207014
  53. Manuel D. Ortigueira; J.A. Tenreiro Machado. "New discrete-time fractional derivatives based on the bilinear transformation: Definitions and properties". Journal of Advanced Research (2020): https://doi.org/10.1016/j.jare.2020.02.011.
    10.1016/j.jare.2020.02.011
  54. Manuel Duarte Ortigueira; José Tenreiro Machado. "Revisiting the 1D and 2D Laplace Transforms". Mathematics 8 8 (2020): 1330-1330. https://doi.org/10.3390/math8081330.
    10.3390/math8081330
  55. Filipa Esgalhado; Arnaldo Batista; Helena Mouriño; Sara Russo; Catarina Palma dos Reis; Fatima Serrano; V. B. Vassilenko; Manuel Duarte Ortigueira. "Uterine contractions clustering based on electrohysterography". Computers in Biology and Medicine 123 (2020): https://novaresearch.unl.pt/en/publications/11e6a94a-c869-4cde-a790-79432af567e5.
    10.1016/j.compbiomed.2020.103897
  56. Ortigueira, Manuel D.; Lopes, António M.; Tenreiro Machado, José; Manuel Duarte Ortigueira; António M. Lopes; José Tenreiro Machado. "On the Numerical Computation of the Mittag-Leffler Function". International Journal of Nonlinear Sciences and Numerical Simulation 20 6 (2019): 725-736. http://hdl.handle.net/10362/99790.
    https://doi.org/10.1515/ijnsns-2018-0358
  57. Ortigueira, Manuel D.; Tenreiro Machado, J.. "A critical analysis of the Caputo–Fabrizio operator". Communications in Nonlinear Science and Numerical Simulation 59 (2018): 608-611. http://dx.doi.org/10.1016/j.cnsns.2017.12.001.
    10.1016/j.cnsns.2017.12.001
  58. Ortigueira, Manuel Duarte. "Fractional Definite Integral". Fractal and Fractional (2017): doi:10.3390/fractalfract1010002.
    10.3390/fractalfract1010002
  59. Ortigueira, Manuel Duarte. "Which Derivative?". Fractal and Fractional (2017): http://www.mdpi.com/2504-3110/1/1/3.
    10.3390/fractalfract1010003
  60. Manuel Duarte Ortigueira. "On the Steady-State Behaviour of Discrete-Time Linear Systems with Poles on the Unit Circle". Sensors & Transducers Journal 204 9 (2016): 39-44. https://novaresearch.unl.pt/en/publications/74f47e1c-948d-466d-aa6d-676fcdcec8e0.
  61. Manuel Duarte Ortigueira. "A Sliding Window Empirical Mode Decomposition for Long Signals Algorithm". Sensors & Transducers Journal 204 9 (2016): 21-28. https://novaresearch.unl.pt/en/publications/0d905a0c-0424-4271-9265-06d43815c0f3.
  62. Ortigueira, Manuel D.; Torres, Delfim F.M.; Trujillo, Juan J.; Manuel D. Ortigueira; Delfim F.M. Torres; Juan J. Trujillo. "Exponentials and Laplace transforms on nonuniform time scales". Communications in Nonlinear Science and Numerical Simulation 39 (2016): 252-270. http://hdl.handle.net/10773/16656.
    10.1016/j.cnsns.2016.03.010
  63. Ortigueira, Manuel D.; Serralheiro, António S.; Machado, J. A. Tenreiro. "A new zoom algorithm and its use in frequency estimation". (2015): http://hdl.handle.net/10400.22/8791.
    10.1515/wwfaa-2015-0002
  64. Ortigueira, M.D.. "Advanced digital signal processing and coding for multi-Tb/s optical transport". IEEE Signal Processing Magazine 31 2 (2014): 15-16. http://www.scopus.com/inward/record.url?eid=2-s2.0-84894770635&partnerID=MN8TOARS.
    10.1109/MSP.2013.2288652
  65. Manuel Duarte Ortigueira; Arnaldo Batista. "K-means Clustering for Sleep Spindles Classification". International Journal of Information Technology & Computer Science 10 3 (2013): 77-85. https://novaresearch.unl.pt/en/publications/5071661c-5f30-4c83-ba7c-a4302eb40e6f.
  66. Arnaldo Batista; Manuel Duarte Ortigueira; DEE Group Author. "Sleep Spindles Detection: a Mixed Method using STFT and WMSD". International Journal Of Bioelectromagnetism 14 4 (2012): 229-233. https://novaresearch.unl.pt/en/publications/70d39a44-2031-40d8-b7ae-e15a1cdcb6ce.
  67. Manuel Duarte Ortigueira; Fernando Coito; DEE Group Author. "On the usefulness of Riemann-Liouville and Caputo derivatives in describing fractional shift-invariant linear systems". Journal of Applied Nonlinear Dynamics 1 2 (2012): 113-124. https://novaresearch.unl.pt/en/publications/830c84c7-2985-4848-a323-bd6c14aeb039.
    10.5890/JAND.2012.05.001
  68. Manuel Duarte Ortigueira; DEE Group Author. "On the Estimation of the Autocorrelation Function". Discussiones Mathematicae: Probability and Statistics 38 NA (2010): 85-97. https://novaresearch.unl.pt/en/publications/4c83fc4a-2cb1-4625-a2d8-7bc28f477013.
  69. Ortigueira, M.D.. "An introduction to the fractional continuous-time linear systems". IEEE Circuits and Systems Magazine 8 3 (2008): 19-26. http://hdl.handle.net/10362/1717.
    Publicado • 10.1109/MCAS.2008.928419
  70. Ortigueira, M.D.; Rato, R.T.; Batista, A. G.; Rato, R. T.; Batista, A.G.. "On the HHT, its problems, and some solutions". Mechanical Systems and Signal Processing 22 6 (2008): 1374-1394. http://hdl.handle.net/10362/2415.
    Publicado • 10.1016/j.ymssp.2007.11.028
  71. Ortigueira, M.D.. "On the fractional central differences and derivatives". (2008): http://hdl.handle.net/10362/1718.
  72. Ortigueira, M.D.; Serralheiro, António J.; Ortigueira, M. D.. "A new least-squares approach to differintegration modeling". Signal Processing 86 10 (2006): 2582-2591. http://hdl.handle.net/10362/2587.
    10.1016/j.sigpro.2006.02.013
  73. Ortigueira, M.D.. "Riesz potential operators and inverses via fractional centred derivatives". (2006): http://hdl.handle.net/10362/2588.
  74. Ortigueira, M.D.. "A coherent approach to non-integer order derivatives". (2006): http://hdl.handle.net/10362/2586.
  75. Ortigueira, M.D.. "Introduction to fractional linear systems. Part 2: discrete-time case". (2000): http://hdl.handle.net/10362/2615.
  76. Ortigueira, M.D.. "Introduction to fractional linear systems. Part 2: discrete-time case". IEE Proceedings: Vision, Image and Signal Processing 147 1 (2000): 71-78. http://www.scopus.com/inward/record.url?eid=2-s2.0-0033899008&partnerID=MN8TOARS.
    10.1049/ip-vis:20000273
Capítulo de livro
  1. Ortigueira, Manuel D.. "The Complex Order Fractional Derivatives and Systems are Non Hermitian". In Proceedings of the International Conference on Fractional Differentiation and its Applications (ICFDA’21), 38-44. Springer International Publishing, 2022.
    10.1007/978-3-031-04383-3_3
  2. Manuel Duarte Ortigueira; Gabriel Bengochea. "Solving the fractional Ambartsumian equation". 155-158. 2022.
    10.34630/20734
  3. Manuel Duarte Ortigueira; Duarte Valério; António M. Lopes. "Continuous-time fractional linear systems: Transient responses". 119-148. De Gruyter, 2019.
    10.1515/9783110571745-006
  4. Gabriel Bengochea; Manuel Duarte Ortigueira; Luis Verde-Star; António Mendes Lopes. "Recursive-operational method for fractional systems: System theory without Laplace transform". 119-147. De Gruyter, 2019.
    10.1515/9783110571929-005
  5. Manuel Duarte Ortigueira; Jose Antonio Tenreiro Machado; Fernando Coito; Gabriel Bengochea. "Discrete-time fractional signals and systems". 149-178. De Gruyter, 2019.
    10.1515/9783110571929-006
  6. Duarte Valério; Manuel Duarte Ortigueira; J. A. Tenreiro Machado; António M. Lopes. "Continuous-time fractional linear systems: Steady-state responses". 149-174. De Gruyter, 2019.
    10.1515/9783110571745-007
  7. Matos, Carlos; Ortigueira, Manuel Duarte. "A New Approach to Rational Discrete-Time Approximations to Continuous-Time Fractional-Order Systems". In IFIP Advances in Information and Communication Technology, 251-258. Springer Berlin Heidelberg, 2012.
    10.1007/978-3-642-28255-3_27
Livro
  1. Ortigueira, Manuel Duarte; Valério, Duarte. Fractional Signals and Systems. De Gruyter. 2020.
    10.1515/9783110624588
  2. Costa, J.C.D.; Ortigueira, M.D.; Batista, A.; Paiva, T.. ARMA modelling for sleep disorders diagnose. 2013.
  3. Ortigueira, M.D.. Fractional linear shift-invariant systems. 2011.
    10.1007/978-94-007-0747-4_4
  4. Ortigueira, M.D.. A travel through the world of fractional calculus. 2011.
    10.1007/978-94-007-0747-4_1
  5. Ortigueira, M.D.. The fractional quantum derivative and the fractional linear scale invariant systems. 2011.
    10.1007/978-94-007-0747-4_6
  6. Ortigueira, M.D.. The causal fractional derivatives. 2011.
    10.1007/978-94-007-0747-4_2
  7. Ortigueira, M.D.. Where are we going to?. 2011.
    10.1007/978-94-007-0747-4_7
  8. Ortigueira, M.D.. Integral representations. 2011.
    10.1007/978-94-007-0747-4_3
  9. Manuel Duarte Ortigueira. Processamento Digital de Sinais. Funda{\c c. 2006.
Pré-impressão
  1. Manuel Duarte Ortigueira. "The Power Functions and Their Relations to the Unified Fractional Derivative". 2025. https://doi.org/10.20944/preprints202502.0791.v1.
    10.20944/preprints202502.0791.v1
  2. Manuel Duarte Ortigueira. "Fractional Calculus of Piecewise Continuous Functions". 2024. https://doi.org/10.20944/preprints202412.2114.v1.
    10.20944/preprints202412.2114.v1
  3. Manuel Duarte Ortigueira; Gabriel Bengochea. "On the Lebesgue Constants". 2024. https://doi.org/10.20944/preprints202405.1746.v1.
    10.20944/preprints202405.1746.v1
  4. Manuel D. Ortigueira. "A Factory of Fractional Derivatives". 2024. https://doi.org/10.20944/preprints202406.0319.v1.
    10.20944/preprints202406.0319.v1
  5. Manuel Duarte Ortigueira; Gabriel Bengochea. "On the fractional derivative duality in some transforms". 2023. https://doi.org/10.20944/preprints202310.0395.v1.
    10.20944/preprints202310.0395.v1
  6. Manuel Ortigueira. "Discrete-Time Fractional Difference Calculus: Origins, Evolutions, and New Formalisms". 2023. https://doi.org/10.20944/preprints202305.0734.v1.
    10.20944/preprints202305.0734.v1
  7. Manuel Ortigueira; Gabriel Bengochea. "A simple solution for the general fractional Ambartsumian equation". 2022. https://doi.org/10.22541/au.165485531.18759027/v1.
    10.22541/au.165485531.18759027/v1
Revisão de livro
  1. Ortigueira, Manuel D.. "Principles of fractional signal processing". http://hdl.handle.net/10362/172161.
    https://doi.org/10.1016/j.dsp.2024.104490

Outros

Outra produção
  1. The Complex Order Fractional Derivatives and Systems Are Non Hermitian. 2021. Manuel Ortigueira. https://doi.org/10.20944/preprints202103.0399.v1.
    10.20944/preprints202103.0399.v1
  2. Corrigendum to “On the computation of the multidimensional Mittag–Leffler function” (Commun. Nonlinear Sci. Numer. Simulat. (2017) 53 (278–287) (S1007570417301594) (10.1016/j.cnsns.2017.05.007)). 2018. Manuel Duarte Ortigueira; António M. Lopes; J. A. Tenreiro Machado. https://novaresearch.unl.pt/en/publications/0b3a1a7e-2881-4e08-8f22-3e334960649d.
    10.1016/j.cnsns.2017.07.002