Ricardo Almeida

40 papers A 1C 1Misc 3Journal 32Unranked 3

Year	Rank	Type	Title / Venue / Authors
2025	Misc	`conf`	Numerical Approach to Finite-Time Stability of Switched Fractional-Order Systems. MMAR Ricardo Almeida, Ewa Girejko, Luís Machado, Agnieszka B. Malinowska, Natália Martins, Andrzej Ruszewski
2025	J	`jnl`	On the stability of memory-dependent multi-agent systems under DoS attacks. J. Frankl. Inst. Ricardo Almeida, Ewa Girejko, Luís Machado, Agnieszka B. Malinowska, Natália Martins
2025	Misc	`conf`	Theoretical Approach to Finite-Time Stability of Switched Fractional-Order Systems. MMAR Ricardo Almeida, Ewa Girejko, Luís Machado, Agnieszka B. Malinowska, Natália Martins, Andrzej Ruszewski
2023	A	`conf`	A Numerical Scheme for a Generalized Fractional Derivative with Variable Order. DIS Ricardo Almeida
2023	J	`jnl`	Editorial for the Special Issue of Axioms "Calculus of Variations, Optimal Control and Mathematical Biology: A Themed Issue Dedicated to Professor Delfim F. M. Torres on the Occasion of His 50th Birthday". Axioms Natália Martins, Ricardo Almeida, Cristiana J. Silva, Moulay Rchid Sidi Ammi
2022	J	`jnl`	A generalized proportional Caputo fractional model of multi-agent linear dynamic systems via impulsive control protocol. Commun. Nonlinear Sci. Numer. Simul. Martin Bohner, Snezhana G. Hristova, Agnieszka B. Malinowska, Maria Luísa Morgado, Ricardo Almeida
2022	C	`conf`	Multi-agent systems with memories under DoS attacks. ICARCV Ricardo Almeida, Ewa Girejko, Luís Machado, Agnieszka B. Malinowska, Natália Martins
2022	J	`jnl`	Stability of Gene Regulatory Networks Modeled by Generalized Proportional Caputo Fractional Differential Equations. Entropy Ricardo Almeida, Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan
2021	J	`jnl`	Global Stability Condition for the Disease-Free Equilibrium Point of Fractional Epidemiological Models. Axioms Ricardo Almeida, Natália Martins, Cristiana J. Silva
2021	J	`jnl`	New Variational Problems with an Action Depending on Generalized Fractional Derivatives, the Free Endpoint Conditions, and a Real Parameter. Symmetry Ricardo Almeida, Natália Martins
2021	J	`jnl`	On the necessary optimality conditions for the fractional Cucker-Smale optimal control problem. Commun. Nonlinear Sci. Numer. Simul. Ricardo Almeida, Rafal Kamocki, Agnieszka B. Malinowska, Tatiana Odzijewicz
2021	J	`jnl`	Optimal leader-following consensus of fractional opinion formation models. J. Comput. Appl. Math. Ricardo Almeida, Rafal Kamocki, Agnieszka B. Malinowska, Tatiana Odzijewicz
2021	J	`jnl`	Quadratic Lyapunov Functions for Stability of the Generalized Proportional Fractional Differential Equations with Applications to Neural Networks. Axioms Ricardo Almeida, Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan
2020	J	`jnl`	On Leader-Following Consensus in Multi-Agent Systems with Discrete Updates at Random Times. Entropy Ricardo Almeida, Ewa Girejko, Snezhana G. Hristova, Agnieszka B. Malinowska
2019	J	`jnl`	Analysis and numerical approximation of tempered fractional calculus of variations problems. J. Comput. Appl. Math. Ricardo Almeida, Maria Luísa Morgado
2019	J	`jnl`	Fractional differential equations and Volterra-Stieltjes integral equations of the second kind. Comput. Appl. Math. Avyt Asanov, Ricardo Almeida, Agnieszka B. Malinowska
2019	J	`jnl`	Optimal Leader-Follower Control for the Fractional Opinion Formation Model. J. Optim. Theory Appl. Ricardo Almeida, Agnieszka B. Malinowska, Tatiana Odzijewicz
2018	—	`conf`	An Extension of the Fractional Gronwall Inequality. RRNR Ricardo Almeida, Agnieszka B. Malinowska, Tatiana Odzijewicz
2018	J	`jnl`	Analysis of a fractional SEIR model with treatment. Appl. Math. Lett. Ricardo Almeida
2018	J	`jnl`	Combined fractional variational problems of variable order and some computational aspects. J. Comput. Appl. Math. Dina Tavares, Ricardo Almeida, Delfim F. M. Torres
2018	Misc	`conf`	Fractional Opinion Formation Models with Leadership. MMAR Ricardo Almeida, Agnieszka B. Malinowska, Tatiana Odzijewicz
2018	J	`jnl`	The Euler-Lagrange and Legendre equations for functionals involving distributed-order fractional derivatives. Appl. Math. Comput. Ricardo Almeida, Maria Luísa Morgado
2017	J	`jnl`	A Caputo fractional derivative of a function with respect to another function. Commun. Nonlinear Sci. Numer. Simul. Ricardo Almeida
2017	J	`jnl`	Constrained fractional variational problems of variable order. IEEE CAA J. Autom. Sinica Dina Tavares, Ricardo Almeida, Delfim F. M. Torres
2017	—	`conf`	Non-invasive Control of the Fractional Hegselmann-Krause Type Model. RRNR Ricardo Almeida, Agnieszka B. Malinowska, Tatiana Odzijewicz
2017	J	`jnl`	Variational Problems Involving a Caputo-Type Fractional Derivative. J. Optim. Theory Appl. Ricardo Almeida
2016	J	`jnl`	Caputo derivatives of fractional variable order: Numerical approximations. Commun. Nonlinear Sci. Numer. Simul. Dina Tavares, Ricardo Almeida, Delfim F. M. Torres
2016	J	`jnl`	Variational Problems Involving a Caputo-Type Fractional Derivative. CoRR Ricardo Almeida
2015	J	`jnl`	Computing Hadamard type operators of variable fractional order. Appl. Math. Comput. Ricardo Almeida, Delfim F. M. Torres
2014	J	`jnl`	Existence results for fractional Commun. Nonlinear Sci. Numer. Simul. Ricardo Almeida, Natália Martins
2013	J	`jnl`	Discrete direct methods in the fractional calculus of variations. Comput. Math. Appl. Shakoor Pooseh, Ricardo Almeida, Delfim F. M. Torres
2013	—	`conf`	Free time fractional optimal control problems. ECC Shakoor Pooseh, Ricardo Almeida, Delfim F. M. Torres
2013	J	`jnl`	General necessary conditions for infinite horizon fractional variational problems. Appl. Math. Lett. Ricardo Almeida
2013	J	`jnl`	Generalized transversality conditions in fractional calculus of variations. Commun. Nonlinear Sci. Numer. Simul. Ricardo Almeida, Agnieszka B. Malinowska
2012	J	`jnl`	Approximation of fractional integrals by means of derivatives. Comput. Math. Appl. Shakoor Pooseh, Ricardo Almeida, Delfim F. M. Torres
2012	J	`jnl`	Fractional variational problems with the Riesz-Caputo derivative. Appl. Math. Lett. Ricardo Almeida
2011	J	`jnl`	Fractional variational calculus for nondifferentiable functions. Comput. Math. Appl. Ricardo Almeida, Delfim F. M. Torres
2010	J	`jnl`	Connectedness and compactness on standard sets. Math. Log. Q. Ricardo Almeida
2010	J	`jnl`	Leitmann's direct method for fractional optimization problems. Appl. Math. Comput. Ricardo Almeida, Delfim F. M. Torres
2009	J	`jnl`	Calculus of variations with fractional derivatives and fractional integrals. Appl. Math. Lett. Ricardo Almeida, Delfim F. M. Torres