Ricardo Almeida

Orcid: 0000-0002-1305-2411

Affiliations:
  • University of Aveiro, Department of Mathematics, Portugal


According to our database1, Ricardo Almeida authored at least 36 papers between 2009 and 2023.

Collaborative distances:
  • Dijkstra number2 of five.
  • Erdős number3 of four.

Timeline

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Bibliography

2023
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, February, 2023

A Numerical Scheme for a Generalized Fractional Derivative with Variable Order.
Proceedings of the Dynamics of Information Systems - 6th International Conference, 2023

2022
Stability of Gene Regulatory Networks Modeled by Generalized Proportional Caputo Fractional Differential Equations.
Entropy, 2022

A generalized proportional Caputo fractional model of multi-agent linear dynamic systems via impulsive control protocol.
Commun. Nonlinear Sci. Numer. Simul., 2022

Multi-agent systems with memories under DoS attacks.
Proceedings of the 17th International Conference on Control, 2022

2021
New Variational Problems with an Action Depending on Generalized Fractional Derivatives, the Free Endpoint Conditions, and a Real Parameter.
Symmetry, 2021

Optimal leader-following consensus of fractional opinion formation models.
J. Comput. Appl. Math., 2021

On the necessary optimality conditions for the fractional Cucker-Smale optimal control problem.
Commun. Nonlinear Sci. Numer. Simul., 2021

Global Stability Condition for the Disease-Free Equilibrium Point of Fractional Epidemiological Models.
Axioms, 2021

Quadratic Lyapunov Functions for Stability of the Generalized Proportional Fractional Differential Equations with Applications to Neural Networks.
Axioms, 2021

2020
On Leader-Following Consensus in Multi-Agent Systems with Discrete Updates at Random Times.
Entropy, 2020

2019
Optimal Leader-Follower Control for the Fractional Opinion Formation Model.
J. Optim. Theory Appl., 2019

Analysis and numerical approximation of tempered fractional calculus of variations problems.
J. Comput. Appl. Math., 2019

Fractional differential equations and Volterra-Stieltjes integral equations of the second kind.
Comput. Appl. Math., 2019

2018
Combined fractional variational problems of variable order and some computational aspects.
J. Comput. Appl. Math., 2018

Analysis of a fractional SEIR model with treatment.
Appl. Math. Lett., 2018

The Euler-Lagrange and Legendre equations for functionals involving distributed-order fractional derivatives.
Appl. Math. Comput., 2018

An Extension of the Fractional Gronwall Inequality.
Proceedings of the Advances in Non-Integer Order Calculus and Its Applications, 2018

Fractional Opinion Formation Models with Leadership.
Proceedings of the 23rd International Conference on Methods & Models in Automation & Robotics, 2018

2017
Variational Problems Involving a Caputo-Type Fractional Derivative.
J. Optim. Theory Appl., 2017

Constrained fractional variational problems of variable order.
IEEE CAA J. Autom. Sinica, 2017

A Caputo fractional derivative of a function with respect to another function.
Commun. Nonlinear Sci. Numer. Simul., 2017

Non-invasive Control of the Fractional Hegselmann-Krause Type Model.
Proceedings of the Non-Integer Order Calculus and Its Applications, 2017

2016
Caputo derivatives of fractional variable order: Numerical approximations.
Commun. Nonlinear Sci. Numer. Simul., 2016

2015
Computing Hadamard type operators of variable fractional order.
Appl. Math. Comput., 2015

2014
Existence results for fractional <i>q</i>-difference equations of order α∈]2, 3[ with three-point boundary conditions.
Commun. Nonlinear Sci. Numer. Simul., 2014

2013
Generalized transversality conditions in fractional calculus of variations.
Commun. Nonlinear Sci. Numer. Simul., 2013

Discrete direct methods in the fractional calculus of variations.
Comput. Math. Appl., 2013

General necessary conditions for infinite horizon fractional variational problems.
Appl. Math. Lett., 2013

Free time fractional optimal control problems.
Proceedings of the 12th European Control Conference, 2013

2012
Approximation of fractional integrals by means of derivatives.
Comput. Math. Appl., 2012

Fractional variational problems with the Riesz-Caputo derivative.
Appl. Math. Lett., 2012

2011
Fractional variational calculus for nondifferentiable functions.
Comput. Math. Appl., 2011

2010
Connectedness and compactness on standard sets.
Math. Log. Q., 2010

Leitmann's direct method for fractional optimization problems.
Appl. Math. Comput., 2010

2009
Calculus of variations with fractional derivatives and fractional integrals.
Appl. Math. Lett., 2009


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