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408 results on '"Ortigueira, Manuel"'

2. Trans-Boolean Cyber Physical Systems

Author

Neves, Francisco, Rato, Raul, Ortigueira, Manuel, Rannenberg, Kai, Editor-in-Chief, Soares Barbosa, Luís, Editorial Board Member, Goedicke, Michael, Editorial Board Member, Tatnall, Arthur, Editorial Board Member, Neuhold, Erich J., Editorial Board Member, Stiller, Burkhard, Editorial Board Member, Stettner, Lukasz, Editorial Board Member, Pries-Heje, Jan, Editorial Board Member, Kreps, David, Editorial Board Member, Rettberg, Achim, Editorial Board Member, Furnell, Steven, Editorial Board Member, Mercier-Laurent, Eunika, Editorial Board Member, Winckler, Marco, Editorial Board Member, Malaka, Rainer, Editorial Board Member, Camarinha-Matos, Luis M., editor, and Ferrada, Filipa, editor

Published
2023
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5. Real-Time PPG-Based HRV Implementation Using Deep Learning and Simulink

Author

Esgalhado, Filipa, Batista, Arnaldo, Vassilenko, Valentina, Ortigueira, Manuel, Rannenberg, Kai, Editor-in-Chief, Soares Barbosa, Luís, Editorial Board Member, Goedicke, Michael, Editorial Board Member, Tatnall, Arthur, Editorial Board Member, Neuhold, Erich J., Editorial Board Member, Stiller, Burkhard, Editorial Board Member, Tröltzsch, Fredi, Editorial Board Member, Pries-Heje, Jan, Editorial Board Member, Kreps, David, Editorial Board Member, Reis, Ricardo, Editorial Board Member, Furnell, Steven, Editorial Board Member, Mercier-Laurent, Eunika, Editorial Board Member, Winckler, Marco, Editorial Board Member, Malaka, Rainer, Editorial Board Member, and Camarinha-Matos, Luis M., editor

Published
2022
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6. The Complex Order Fractional Derivatives and Systems are Non Hermitian

Author

Ortigueira, Manuel D., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Dzielinski, Andrzej, editor, Sierociuk, Dominik, editor, and Ostalczyk, Piotr, editor

Published
2022
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7. Matsuda Method Adapted to Identify Fractional Order Transfer Functions

Author

Valério, Duarte, Ortigueira, Manuel D., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Dzielinski, Andrzej, editor, Sierociuk, Dominik, editor, and Ostalczyk, Piotr, editor

Published
2022
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8. Operational Calculus with Applications to Generalized Two-Sided Fractional Derivative

Author

Bengochea, Gabriel, Ortigueira, Manuel, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Dzielinski, Andrzej, editor, Sierociuk, Dominik, editor, and Ostalczyk, Piotr, editor

Published
2022
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10. Improvements on Signal Processing Algorithm for the VOPITB Equipment

Author

Cardoso, Filipa E., Vassilenko, Valentina, Batista, Arnaldo, Bonifácio, Paulo, Martin, Sergio Rico, Muñoz-Torrero, Juan, Ortigueira, Manuel, Rannenberg, Kai, Editor-in-Chief, Soares Barbosa, Luís, Editorial Board Member, Goedicke, Michael, Editorial Board Member, Tatnall, Arthur, Editorial Board Member, Neuhold, Erich J., Editorial Board Member, Stiller, Burkhard, Editorial Board Member, Tröltzsch, Fredi, Editorial Board Member, Pries-Heje, Jan, Editorial Board Member, Kreps, David, Editorial Board Member, Reis, Ricardo, Editorial Board Member, Furnell, Steven, Editorial Board Member, Mercier-Laurent, Eunika, Editorial Board Member, Winckler, Marco, Editorial Board Member, Malaka, Rainer, Editorial Board Member, Camarinha-Matos, Luis M., editor, Ferreira, Pedro, editor, and Brito, Guilherme, editor

Published
2021
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16. Idle Tone Detection in Biomedical Signals Using Time-Frequency Techniques

Author

Cardoso, Filipa E., Batista, Arnaldo, Vassilenko, Valentina, Serrano, Andreia, Ortigueira, Manuel, Rannenberg, Kai, Editor-in-Chief, Soares Barbosa, Luís, Editorial Board Member, Goedicke, Michael, Editorial Board Member, Tatnall, Arthur, Editorial Board Member, Neuhold, Erich J., Editorial Board Member, Stiller, Burkhard, Editorial Board Member, Tröltzsch, Fredi, Editorial Board Member, Pries-Heje, Jan, Editorial Board Member, Kreps, David, Editorial Board Member, Reis, Ricardo, Editorial Board Member, Furnell, Steven, Editorial Board Member, Mercier-Laurent, Eunika, Editorial Board Member, Winckler, Marco, Editorial Board Member, Malaka, Rainer, Editorial Board Member, Camarinha-Matos, Luis M., editor, Farhadi, Nastaran, editor, Lopes, Fábio, editor, and Pereira, Helena, editor

Published
2020
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18. Exponentials and Laplace transforms on nonuniform time scales

Author

Ortigueira, Manuel, Torres, Delfim F. M., and Trujillo, Juan

Subjects
Mathematics - Classical Analysis and ODEs, Nonlinear Sciences - Exactly Solvable and Integrable Systems, 26E70, 44A10, 65T50
Abstract

We formulate a coherent approach to signals and systems theory on time scales. The two derivatives from the time-scale calculus are used, i.e., nabla (forward) and delta (backward), and the corresponding eigenfunctions, the so-called nabla and delta exponentials, computed. With these exponentials, two generalised discrete-time Laplace transforms are deduced and their properties studied. These transforms are compatible with the standard Laplace and $Z$ transforms. They are used to study discrete-time linear systems defined by difference equations. These equations mimic the usual continuous-time equations that are uniformly approximated when the sampling interval becomes small. Impulse response and transfer function notions are introduced. This implies a unified mathematical framework that allows us to approximate the classic continuous-time case when the sampling rate is high or to obtain the standard discrete-time case, based on difference equations, when the time grid becomes uniform., Comment: This is a preprint of a paper whose final and definite form will be published in 'Communications in Nonlinear Science and Numerical Simulation', ISSN 1007-5704. Submitted 30/Dec/2015; revised 28/Feb/2016; accepted 14/Mar/2016

Published
2016
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24. Variable-Order Fractional Scale Calculus.

Author

Valério, Duarte and Ortigueira, Manuel D.

Subjects
*IMPULSE response, *TRANSFER functions, *FRACTIONAL calculus
Abstract

General variable-order fractional scale derivatives are introduced and studied. Both the stretching and the shrinking cases are considered for definitions of the derivatives of the GL type and of the Hadamard type. Their properties are deduced and discussed. Fractional variable-order systems of autoregressive–moving-average type are introduced and exemplified. The corresponding transfer functions are obtained and used to find the corresponding impulse responses. [ABSTRACT FROM AUTHOR]

Published
2023
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