Personal Data

Full name

José Leonel Linhares da Rocha

Publishing name

J. Leonel Rocha

Birthday

1971-07-13T00:00:00

Academic Degrees

DOUTORAMENTO(0)

Degree date

2004

Final grade

Aprovado

Degree granting institution

Universidade Técnica de Lisboa

School / College / Campus

Instituto Superior Técnico

Thesis title

Invariantes Topológicos e Métricos de Sistemas Dinâmicos de Baixa Dimensão

Supervisor

José Rodrigues Santos de Sousa Ramos

Co-supervisor

-

Scientific area

Matemática

MESTRADO(2)

Degree date

1998

Final grade

Aprovado

Degree granting institution

Universidade Técnica de Lisboa

School / College / Campus

Instituto Superior Técnico

Thesis title

Dimensão de Hausdorff de Conjuntos Fractais Gerados por Sistemas de Funções Iteradas

Supervisor

José Rodrigues Santos de Sousa Ramos

Co-supervisor

-

Scientific area

Matemática

LICENCIATURA(5)

Degree date

1994

Final grade

15 val

Degree granting institution

Universidade dos Açores

School / College / Campus

Other

Thesis title

.

Supervisor

-

Co-supervisor

-

Scientific area

Matemática

Profissional activity

Period Position Institution
01-03-2009 - 03-03-2011 Professor Coordenador a termo resolutivo certo, por tempo indeterminado com dedicação exclusiva Instituto Superior de Engenharia de Lisboa
01-03-2006 - 28-02-2009 Professor Coordenador, com nomeação provisória e dedicação exclusiva Instituto Superior de Engenharia de Lisboa
01-03-2001 - 28-02-2006 Equiparado a Professor Adjunto, com dedicação exclusiva Instituto Superior de Engenharia de Lisboa
01-03-1998 - 28-02-2001 Equiparado a Assistente do 2º triénio, com dedicação exclusiva Instituto Superior de Engenharia de Lisboa

Area of scientific activity

Area of scientific activity

Matemática Aplicada

Specialization domain

Sistemas Dinâmicos e Aplicações

Current main scientific area

Sistemas Dinâmicos e Aplicações: modelos de crescimento populacionais; acoplamentos; sincronização de redes; teoria das bifurcações; invariantes topológicos e métricos.

Other scientific activities

.

Experience as scientific advisor

Teses de doutoramento:

· Acilina do Nascimento Caneco, Sincronização Caótica de Sistemas Dinâmicos não Lineares Acopolados, Doutoramento em Matemática, Departamento de Matemática da Escola de Ciências e Tecnologia da Universidade de Évora (co-orientação com Maria Clara Grácio, UE), 29 de Abril de 2010.

· Sandra Maria da Silva Figueiredo Aleixo, Métodos Analíticos em Probabilidades e Métodos Probabilísticos em Análise: Fractalidade Associada aos Modelos Beta(p,q), Evolução de Populações e Dimensões de Hausdorff, Doutoramento no ramo de Estatística e Investigação Operacional, especialidade de Probabilidade e Estatística, Departamento de Estatística e Investigação Operacional da Faculdade de Ciências da Universidade de Lisboa (orientação com Dinis Duarte Pestana, FC-UL), 9 de Dezembro de 2008.

Participations in R&D projects

· Desde 31 de Dezembro de 2008 desenvolve trabalho de investigação como membro integrado no Centro de Estatística e Aplicações da Universidade de Lisboa, no projecto: Probability, Modeling and Data Analysis (Rg-MATH-LVT-Lisboa-6-949).

· Membro do projecto: Dinâmica Simbólica em Iteradas de Aplicações em Espaços de Dimensão n (n=2, 3), Acções Integradas de Cooperação Científica e Técnica Luso-Francesas, GRICES-EGIDE, Programa Pessoa 2007/2008 e 2008/2009, Universidade de Évora e L'Institut National des Sciences Appliquées de Toulouse (INSA).

· Desde o ano lectivo de 1996/97 desenvolve trabalho de investigação como colaborador no Centro de Análise Matemática, Geometria e Sistemas Dinâmicos no Departamento de Matemática (MATH-LVT-Lisboa-89), IST, na área de Sistemas Dinâmicos, tendo colaborado nos projectos: Métodos Geométricos e Topológicos em Baixa Dimensão e em Dimensão Infinita; Propriedades Geométricas e Combinatoriais dos Invariantes Espectrais.

Awards

Year Award Awarding entity

Publications

Publicações em actas de encontros científicos

  • J. Leonel Rocha and Sandra M. Aleixo, Modeling Allee Effect from Beta (p; 2) Densities, In Proceedings of the ITI 2012, 34th International Conference on Information Technology Interfaces, 2012, 461-466. (DOI: 10.2498/ITI.2012.0420, ISSN: 1334-2762, ISBN:
    978-1-4673-1629-3)

    Sandra M. Aleixo and J. Leonel Rocha, Generalized Models from Beta (p; 2) Densities with Strong Allee Effect: Dynamical Approach, In Proceedings of the ITI 2012, 34th International Conference on Information Technology Interfaces, 2012, 319-324. (DOI: 10.1109/ITI.2012.0438, ISSN: 1330-1012, ISBN: 978-953-7138-24-0)

    Sandra M. Aleixo, J. Leonel Rocha and Dinis D. Pestana, Populational Growth Models Proportional to Beta Densities with Allee Effect, In Mathematical Models in Engineering, Biology and Medicine, Cabada, A., Liz, E. and Nieto, J. (Eds): AIP Conf. Proc., American Inst. of Physics, 2009, vol. 1124, 3-12. (DOI: 10.1063/1.3142952, ISSN: 0094-243X, ISBN:978-0-7354-0660-5)

    Acilina Caneco, Clara Grácio, Sara Fernandes, J. Leonel Rocha and Carlos Ramos, Relationship Between the Behavior of Entropy, the Conductance and the Coefficient of Clustering of Networks Using Symbolic Dynamics, In Proceedings of the NOMA'09, International Workshop on Nonlinear Maps and their Applications, Urbino, Itália, 2009, 81-86.

    Acilina Caneco, Clara Grácio, Sara Fernandes, J. Leonel Rocha and Carlos Ramos, Conditions for the Formation of Clusters Depending on the Conductance and the Coefficient of Clustering, In Proceedings of INDS'09, 2th International Workshop on Nonlinear Dynamics and Synchronization, Kyamakya, K., Kaltenbacker, M. and Horn, M. (Eds): Shaker Verlag GmbH, Germany, Vol.4, 2009, 12-16. (ISSN: 1866-7791, ISBN: 978-3-8322-7943-1)

    Dinis D. Pestana, Sandra M. Aleixo and J. Leonel Rocha, Hausdorff Dimension of the Random Middle Third Cantor Set, In Proceedings of the ITI 2009, 31th International Conference on Information Technology Interfaces, 2009, 279-284. (ISSN: 1330-1012, ISBN: 978-953-7138-15-8, DOI 10.1109/ITI.2009.5196094)

    Sandra M. Aleixo, J. Leonel Rocha and Dinis D. Pestana, Dynamical Behaviour on the Parameter Space: New Populational Growth Models Proportional to Beta Densities, In Proceedings of the ITI 2009, 31th International Conference on Information Technology Interfaces, 2009, 213-218. (ISSN: 1330-1012, ISBN: 978-953-7138-15-8, DOI 10.1109/ITI.2009.5196082)

    Sandra M. Aleixo, J. Leonel Rocha and Dinis D. Pestana, Populational Growth Models in the Light of Symbolic Dynamics, In Proceedings of the ITI 2008, 30th International Conference on Information Technology Interfaces, Luzar-Stiffler, V., Dobric, V. H. and Bekic, Z. (Eds): IEEE, 2008, 311-316. (ISSN: 1330-1012, ISBN: 978-953-7138-12-7, DOI 10.1109/ITI.2008.4588428)

    Acilina Caneco, J. Leonel Rocha, Clara Grácio and Sara Fernandes, Symbolic Dynamics and Networks Synchronization, In Proceedings of the IEEE Internacional Workshop on Nonlinear Maps and Applications, NOMA'07, LATTIS-INSA, Toulouse University, França, 2007, 44-47.

Capítulos de livros

  • J. Leonel Rocha, Sandra M. Aleixo and Dinis D. Pestana, Beta(p,q)-Cantor Sets: Determinism and Randomness, In Chaos Theory: Modeling, Simulation and Applications, Skiadas, C. H., Dimotikalis, Y. and Skiadas, C. (Eds), World Scientific Publishing Co, 2011, 333-340. (ISBN-10 9814350338, ISBN-13 978-9814350334)

    Dinis D. Pestana, Sandra M. Aleixo and J. Leonel Rocha, Regular Variation, Paretian Distributions, and the Interplay of Light and Heavy Tails in the Fractality of Asymptotic Models, In Chaos Theory: Modeling, Simulation and Applications, Skiadas, C. H., Dimotikalis, Y. and Skiadas, C. (Eds), World Scientific Publishing Co, 2011, 309-316. (ISBN-10 9814350338, ISBN-13 978-9814350334)

    Acilina Caneco, Clara Grácio and J. Leonel Rocha, Symbolic Dynamics and Synchronization, In Chaos Theory: Modeling, Simulation and Applications, Skiadas, C. H., Dimotikalis, Y. and Skiadas, C. (Eds), World Scientific Publishing Co, 2011, 135-142. (ISBN-10 9814350338, ISBN-13 978-9814350334)

    Acilina Caneco, Sara Fernandes, Clara Grácio and J. Leonel Rocha, Networks Synchronizability, Local Dynamics and Some Graph Invariants, In Dynamics, Games and Science I, Peixoto, M. M., Pinto, A. A. and Rand, D. A. (Eds): Springer Proceedings in Mathematics 1, Springer-Verlag Berlin Heidelberg, 2011, Vol. 1, Chap. 14, 221-238. (DOI 10.1007/978-3-642-11456-4_14, ISBN 978-3-642-11455-7)

    Sandra M. Aleixo, J. Leonel Rocha and Dinis D. Pestana, Probabilistic Methods in Dynamical Analysis: Populations Growths Associated to Models Beta(p,q) with Allee Effect, In Dynamics, Games and Science II, Peixoto, M. M., Pinto, A. A. and Rand, D. A. J. (Eds): Springer Proceedings in Mathematics 2, Springer-Verlag Berlin Heidelberg, 2011, Vol. 2, Chap. 5, 79-95. (DOI 10.1007/978-3-642-14788-3_5, ISBN 978-3-642-14787-6)

    Acilina Caneco, J. Leonel Rocha, Clara Grácio and Sara Fernandes, Some Conjectures about the Synchronizability and the Topology of Networks, In Frontiers in the Study of Chaotic Dynamical Systems with Open Problems, Elhadj, Z. and Sprott, J. C. (Eds): World Scientific Series on Nonlinear Science, Series B, 2010, Chap. 7, 117-148. (ISBN-13 978-981-4340-69-4, ISBN-10 981-4340-69-3)

    Acilina Caneco, J. Leonel Rocha and Clara Grácio, Chaotic Synchronization of Piecewise Linear Maps, In Discrete Dynamics and Difference Equations, Elaydi, S., Oliveira, H., Ferreira, J. M. and Alves, J. F. (Eds): World Scientific Publishing Co, 2010, 214-222. (ISBN-10 9814287644, ISBN-13 9789814287647)

    J. Leonel Rocha and J. Sousa Ramos, Computing Topological and Metrical Invariants, In Dynamical Systems and Applications, Akça, H., Boucherif, A. and Covachev (Eds): GBS Publishers & Distributors, 2005, 598-613. (ISBN 81-89476-00-9)

Teses

Artigos em revistas de circulação internacional com arbitragem científica

  • J. Leonel Rocha, D. Fournier-Prunaret and Abdel-Kaddous Taha, Strong and Weak Allee Effects and Chaotic Dynamics in Richards’ Growths, Discrete & Continuous Dynamical Systems - Series B, 18, 9 (2013), 2397-2425. (DOI 10.3934/dcdsb.2013.18.2397)

    J. Leonel Rocha and Sandra M. Aleixo, An Extension of Gompertzian Growth Dynamics: Weibull and Fr´echet Models, Mathematical Biosciences and Engineering, 10, 2 (2013), 379-398. (DOI 10.3934/mbe.2013.10.379)

    J. Leonel Rocha and Sandra M. Aleixo, Dynamical Analysis in Growth Models: Blumberg’s Equation, Discrete & Continuous Dynamical Systems - Series B, 18, 3 (2013), 783-795. (DOI 10.3934/dcdsb.2013.18.783)

    D. Fournier-Prunaret, J. Leonel Rocha, Acilina Caneco, Sara Fernandes and Clara Grácio, Synchronization and Basins of Synchronized States 2-Dimensional Piecewise Maps Issued of Coupling Between 3-Pieces One-Dimensional Map, International Journal of Bifurcation & Chaos, 23, 8 (2013), 1350134 1-18. (DOI 10.1142/S0218127413501344)

    J. Leonel Rocha and Sandra M. Aleixo, Von Bertalanffy’s Growth Dynamics with Strong Allee Effect, Discussiones Mathematicae, Probability and Statistics, 32 (2012), 35-45. (DOI: 10.7151/dmps.1142, ISSN 1509-9423, ISSN 2084-0381 )

    Sandra M. Aleixo and J. Leonel Rocha, Generalized Models from Beta (p; 2) Densities with Strong Allee Effect: Dynamical Approach, Journal of Computing and Information Technology - CIT 20, 3 (2012), 201-207. (DOI: 10.2498/cit.1002098, ISSN 1330-1136, ISSN
    1846-3908)

    Acilina Caneco, J. Leonel Rocha and Clara Grácio, Topological Entropy in the Synchronization of Piecewise Linear and Monotone Maps. Coupled Duffing Oscilators, International Journal of Bifurcation & Chaos, 19, 11 (2009), 3855-3868. (DOI 10.1142/S0218127409025183)

    Acilina Caneco, J. Leonel Rocha and Clara Grácio, Kneading Theory Analysis of the Duffing Equation, Chaos, Solitons & Fractals, 42 (2009), 1529-1538. (Cited:4, ISSN: 0960-0779, DOI 10.1016/j.chaos.2009.03.040)

    Dinis D. Pestana, Sandra M. Aleixo and J. Leonel Rocha, The Beta(p,1) Extensions of the Random (Uniform) Cantor Sets, Discussiones Mathematicae, Probability and Statistics, 29, 2 (2009), 199-221.(ZMATH 1214.28004)

    Acilina Caneco, Clara Grácio, Sara Fernandes, J. Leonel Rocha and Carlos Ramos, Synchronizability and Graph Invariants, ISAST Transactions on Computers and Intelligent Systems, 2, 1 (2009), 47-52. (ISSN 1798-2448)

    Acilina Caneco, J. Leonel Rocha and Clara Grácio, Symbolic Dynamics and Chaotic Synchronization in Coupled Duffing Oscillators, Journal of Nonlinear Mathematical Physics, 15, 3 (2008), 102-111. (ISSN: 1402-9251, DOI 10.2991/jnmp.2008.15.s3.11)

    J. Leonel Rocha and J. Sousa Ramos, Computing Conditionally Invariant Measures and Escape Rates, Neural Parallel and Scientific Computations, 14 (2006), 97-114. (ISSN 1061-5369)

    J. Leonel Rocha and J. Sousa Ramos, Weighted Kneading Theory of one-dimensional Maps with a Hole, International Journal of Mathematics and Mathematical Sciences, 38, 6 (2004), 2019-2038. (DOI 10.1155/S016117120430428X)

    J. Leonel Rocha and J. Sousa Ramos, IFS with Overlaps and Hausdorff Dimension, Grazer Mathematische Berichte, 346 (2004), 355-376. (ISSN 1016-7692)

    J. Leonel Rocha and J. Sousa Ramos, On Iterated Maps of the Interval with Holes, Journal of Difference Equations and Applications, 9, 3/4 (2003), 319-335. (Cited:1, ISSN: 1023-6198, DOI 10.1080/1023619021000047752)

    J. Leonel Rocha and J. Sousa Ramos, Tilings Described by Iterated Maps, International Journal of Bifurcation & Chaos, 13, 7 (2003), 1923-1935. (DOI 10.1142/S021812740300776X)

Teses

  • · J. Leonel Rocha, Invariantes Topológicos e Métricos de Sistemas Dinâmicos de Baixa Dimensão, Tese de Doutoramento, IST, 28 Janeiro 2004.

    · J. Leonel Rocha, Dimensão de Hausdorff de Conjuntos Fractais Gerados por Sistemas de Funções Iteradas, Tese de Mestrado, IST, 14 Dezembro 1998.

Communications

Outras comunicações orais

From weak Allee effect to no Allee effect in Richards’ growth models, International Workshop on Nonlinear Maps and their Applications, NOMA’13, Zaragoza, Espanha, 3-4 Setembro 2013, (co-autor com D. Fournier-Prunaret, INSA Toulouse; Abdel-Kaddous Taha; INSA Toulouse).

Allee effect in Richards’ growth models, International Workshop on Nonlinear Maps and their Applications, NOMA’13, Zaragoza, Espanha, 3-4 Setembro 2013, (co-autor com D. Fournier-Prunaret, INSA Toulouse; Abdel-Kaddous Taha; INSA Toulouse).

Synchronization in Richards’ chaotic systems, International Conference and Advanced School Planet Earth, Dynamics, Games and Science II, DGS II 2013, Lisboa, Portugal, 2-4 Setembro 2013, (co-autor com Sanda M. Aleixo, ISEL; Acilina Caneco, ISEL).

An Extension of Gompertzian Growth Dynamics: Weibull and Fréchet Models, International
Conference and Advanced School Planet Earth, Dynamics, Games and Science II, DGS II 2013, Lisboa, Portugal, 2-4 Setembro 2013, (co-autor com Sanda M. Aleixo, ISEL).

Synchronization in Richards’ chaotic systems, Mathematical Methods in Engineering International Conference, MME 2013, Porto, Portugal, 22-26 Julho 2013, (co-autor com Sanda M. Aleixo, ISEL; Acilina Caneco, ISEL).

Allee Effect and Dynamics Behaviour in Richards’ Growth Models, International Conference Dynamics, Bifurcations and Strange Attractors, Nizhny Novgorod, Russia, 1-5 Julho 2013, (co-autor com D. Fournier-Prunaret, INSA Toulouse; Abdel-Kaddous Taha; INSA Toulouse).

Mutual Information Rate and Topological Order in Networks, 6rd Chaotic Modeling and Simulation International Conference, CHAOS 2013, Istanbul, Turkey, 11-14 Junho 2013, (co-autor com Acilina Caneco, ISEL).

Synchronization in von Bertalanffys Models, 6rd Chaotic Modeling and Simulation International Conference, CHAOS 2013, Istanbul, Turkey, 11-14 Junho 2013, (coautor com Sanda M. Aleixo, ISEL; Acilina Caneco, ISEL).

Synchronization and Transmission of Information in Networks, 19th European Conference on Iteration Theory, ECIT 2012, São Miguel, Açores, Portugal, 9-15 Setembro 2012, (co-autor com Acilina Caneco, ISEL).

Global Synchronization in Couplings of One-dimensional Piecewise Unimodal Maps, 19th European Conference on Iteration Theory, ECIT 2012, São Miguel, Açores, Portugal, 9-15 Setembro 2012,(co-autor com Danièle Fournier-Prunaret, Univ. Toulouse; Sara Fernandes, UE; Clara Grácio, UE; Acilina Caneco, ISEL).

Strong and Weak Allee Effects, Extinctions and Bistability in Richards’ Growth Dynamics, 6th Workshop on Statistics, Mathematics and Computation and 3rd Portuguese-Polish Workshop on Biometry in Honour of Prof. Dinis Pestana, Universidade da Beira Interior, Covilhã, Portugal, 3-4 Junho 2012, (co-autor com Sanda M. Aleixo, ISEL).

Modeling Allee Effect from Beta(p; 2) Densities, 34th International Conference on Information
Interfaces, ITI 2012, Cavtat/Dubrovnik, Croácia, 25-28 Junho 2012, (co-autor com Sanda M. Aleixo, ISEL).

Generalized Models from Beta(p; 2) Densities with Strong Allee Effect: Dynamical Approach, 34th International Conference on Information Technology Interfaces, ITI 2012, Cavtat/Dubrovnik, Croácia, 25-28 Junho 2012, (co-autor com Sanda M. Aleixo, ISEL).

Topological Entropy and Conductance on Complete Clustered Networks, 18º European Conference on Iteration Theory, ECIT 2010, Nant, França, 12-17 Setembro 2010, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE).

Topological Entropy and Conductance on Complete Clustered Networks, European Conference on Complex Systems, ECCS 2010, Lisboa Portugal, 13-17 Setembro 2010, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE).

Network Synchronization Interval and Local Kolmogorov-Sinai Entropy, European Conference on Complex Systems, ECCS 2010, Lisboa Portugal, 13-17 Setembro 2010, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE).

Signed Mixtures of Beta Densities as New Populations Growth Models, International Conference on Modeling, Optimization and Dynamics, Statistical Models, ICMOD 2010, Porto, Portugal, 5-7 Julho 2010, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Beta(p,q)-Cantor Sets: Determinism and Randomness, International Conference on Modeling, Optimization and Dynamics, Dynamical Systems, ICMOD 2010, Porto, Portugal, 5-7 Julho 2010, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Chaotic Symbolic Synchronization, International Conference on Modeling, Optimization and Dynamics, Dynamical Systems, ICMOD 2010, Porto, Portugal, 5-7 Julho 2010, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE).

Regular Variation, Paretian Distributions, and the Interplay of Light and Heavy Tails in the Fractality of Asymptotic Models, The 3rd Chaotic Modeling and Simulation International Conference, CHAOS 2010, Creta, Grécia, 1-4 Junho 2010, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Beta(p,q)-Cantor Sets: Determinism and Randomness, The 3rd Chaotic Modeling and Simulation International Conference, CHAOS 2010, Creta, Grécia, 1-4 Junho 2010, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Symbolic Dynamics and Synchronization, The 3rd Chaotic Modeling and Simulation International Conference, CHAOS 2010, Creta, Grécia, 1-4 Junho 2010, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE).

Relationship Between the Behavior of Entropy, the Conductance and the Coefficient of Clustering of Networks Using Symbolic Dynamics, International Workshop on Nonlinear Maps and their Applications, NOMA'09, Urbino, Itália, 10-11 Setembro 2009, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE; Carlos Ramos, UE).

Conditions for the Formation of Clusters Depending on the Conductance and the Coefficient of Clustering, 2th International Workshop on Nonlinear Dynamics and Synchronization, INDS 2009, Klagenfurt, Austria, 20-21 de Julho 2009, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE; Carlos Ramos, UE).

Dynamical Behaviour on the Parameter Space: New Populational Growth Models Proportional to Beta Densities, 31th International Conference on Information Technology Interfaces, ITI 2009, Cavtat/Dubrovnik, Croácia, 22-25 Junho 2009, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Hausdorff Dimension of the Random Middle Third Cantor Set, 31th International Conference on Information Technology Interfaces, ITI 2009, Cavtat/Dubrovnik, Croácia, 22-25 Junho 2009, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Populational Growth Models Proportional to Beta Densities, Mathematical Models in Engineering, Biology and Medicine, Conference on Boundary Value Problems: Mathematical Models in Engineering, Biology and Medicine, Universidade de Santiago de Compostela, Espanha, 16-19 Setembro 2008, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Dynamics of Populational Growth Models with Allee Effect, Dynamics and Applications 2008, Dynamics and Biology, DYNA08, Universidade do Minho, Braga, Portugal, 8-12 Setembro 2008, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

On the Relationship Between the Synchronizability of a Network and Some Graph Invariants, Dynamics and Applications 2008, Dynamical Systems, DYNA08, Universidade do Minho, Braga, Portugal, 8-12 Setembro 2008, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE).

Populational Growth Models in the Light of Symbolic Dynamics, 30th International Conference on Information Technology Interfaces, ITI 2008, Cavtat/Dubrovnik, Croácia, 23-26 Junho 2008, (co-autor com Sanda M. Aleixo, ISEL; Dinis D. Pestana, FCUL).

Chaotic Synchronization of Piecewise Linear Maps, Acções Integradas Luso-Francesas, GRICES-EGIDE, Programa Pessoa 2007/2008, Universidade de Évora, 26-30 Maio 2007, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE).

Symbolic Dynamics and Networks Synchronization, International Workshop on Nonlinear Maps and their Applications, NOMA'07, LATTIS- INSA, Toulouse University, França, 13-14 Dezembro 2007 (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE).

Chaotic Synchronization of Unimodal and Bimodal Maps, 12th International Conference on Difference Equations and Applications, ICDEA 2007, IST, 23-27 Julho 2007, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE).

Graphs, Symbolic Dynamics and Synchronization of Networks, 12th International Conference on Difference Equations and Applications, ICDEA 2007, IST, 23-27 Julho 2007, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; Sara Fernandes, UE).

Symbolic Dynamics and Synchronization, Acções Integradas de Cooperação Científica e Técnica Luso-Francesas, GRICES-EGIDE, Programa Pessoa 2007/2008, L'Institut National des Sciences Appliquées de Toulouse (INSA), França, Junho 2007, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE).

Symbolic Dynamics and Chaotic Synchronization in Coupled Duffing Oscillators, International Conference - Nonlinear Evolution Equations and Dynamical Systems, NEEDS 2007, Barcelona, Espanha, 15-24 Junho 2007, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE).

Ruelle Zeta Functions and Expanding Maps of the Interval with Holes, International Conference - Progress on Difference Equations 2007, Laufen/Salzach, Alemanha, 31 Março-5 Abril 2007, (invited talk, co-autor com J. Ferreira Alves, IST).

Symbolic Dynamics in the Duffing Attractor, 16th European Conference on Iteration Theory - ECIT 2006, Gargnano, Itália, 10-16 Setembro 2006, (co-autor com Acilina Caneco, ISEL; Clara Grácio, UE; J. Sousa Ramos, IST).

Weighted Markov Transition Operator for Anosov Maps, 16th European Conference on Iteration Theory - ECIT 2006, Gargnano, Itália, 10-16 Setembro 2006, (co-autor com J. Sousa Ramos, IST).

Invariantes Topológicos e Métricos de Sistemas Dinâmicos de Baixa Dimensão, Centro de Matemática do ISEL, 9 Dezembro 2004.

Weighted Kneading Theory for Triangular Maps, 15th European Conference on Iteration Theory - ECIT 2004, Batschuns, Austria, 29 Agosto-4 Setembro 2004, (co-autor com J. Sousa Ramos, IST; Diana Mendes, ISCTE).

Computing Topological and Metrical Invariants, Dynamical Systems and Applications, Antalya, Turquia, 5-10 Julho 2004, (co-autor com J. Sousa Ramos, IST).

Computing Hausdorff Dimensions and Escape Rates, Dynamical Systems Conference - Denton 2003, Mathematics Department, University of North Texas, USA, 25-29 Maio 2003, (co-autor com J. Sousa Ramos, IST).

Weighted Kneading Theory for Maps with Holes, Mini-Workshop on Discrete Dynamical Systems: Triangular Maps, IST, 14 Fevereiro 2003, (co-autor com J. Sousa Ramos, IST).

IFS with Overlaps and Hausdorff Dimension, 14th European Conference on Iteration Theory - ECIT 2002, Évora, Portugal, 1-7 Setembro 2002, (co-autor com J. Sousa Ramos, IST).

Pavimentações com Ladrilhos Fractais, II Encontro de Sistemas Dinâmicos e Geometria, Universidade da Madeira, 24 Abril 2001, (co-autor com J. Sousa Ramos, IST).

Tilings Described by Iterated Maps, 13th European Conference on Iteration Theory - ECIT 2000, Murcia, Espanha, 4-9 Setembro 2000, (co-autor com J. Sousa Ramos, IST).

Dimensão de Hausdorff da Fronteira de Pavimentações Fractais, IST, 24 Julho 1998, (co-autor com J. Sousa Ramos, IST).