Ricardo Lopez-Ruiz — Windows Live

Biological, Social and Economic Models


(12) Transition from Pareto to Boltzmann-Gibbs Behavior in a Deterministic Economic Model Physica A, vol. 388, pp. 3521-3526 (2009).

(11) Periodic and Chaotic Events in a Discrete Model of Logistic Type for the Competitive Interaction of Two Species Chaos, Solitons and Fractals, vol. 41, pp. 334-347 (2009).

(10) Economic Models with Chaotic Money Exchange Proceedings of the ICCS'09 Conference (Baton Rouge - USA), Part I, Lecture Notes in Computer Science, vol. 5544, pp. 43-52 (2009). (AWARD TO THE BEST PAPER OF THE ICCS'09).

(9) Pareto and Boltzmann-Gibbs behaviors in a deterministic multi-agent system Physica A, vol. 387, pp. 4637-4642 (2008).

(8) Logistic Models for Symbiosis, Predator-Prey and Competition Chapter in ENCYCLOPEDIA OF NETWORKED AND VIRTUAL ORGANIZATION, vol. II, pp. 838-847 (2008).

(7) Modelling User's Activity in a Real-World Complex Network International Journal of Computer Mathematics, vol. 85, pp. 1287-1298 (2008).

(6) Bistability in some 'Aggregates' of Logistic Models AIP Proceedings of the MEDYFINOL'06 Conference (Mar del Plata - Argentina), vol. 913, pp. 89-95 (2007).

(5) Awaking and Sleeping of a Complex Network Neural Networks, vol. 20, pp. 102-108 (2007).

(4) A Model of Coupled Maps for Economic Dynamics Proceedings of the WORKSHOP ON COMPLEX SYSTEMS'06 (Santander - Spain), European Physical Journal Special Topics, vol. 143, pp. 241-243 (2007).

(3) Thresholds for Epidemic Outbreaks in Finite Scale-Free Networks Mathematical Biosciences and Engineering, vol. 2, pp. 317-327 (2005).

(2) Indirect Allee Effect, Bistability and Chaotic Oscillations in a Predator-Prey Discrete Model of Logistic Type Chaos, Solitons and Fractals, vol. 24, pp. 85-101 (2005).

(1) Complex Behaviour in a Discrete Logistic Model for the Simbiotic Interaction of Two Species Mathematical Biosciences and Engineering, vol. 1, pp. 307-324 (2004).

Chaos, Nonlinear Maps and Applications


(11) Money Distributions in Chaotic Economies Proceedings of the NOMA'09 Conference (Urbino - Italy), pp. 19-23, Organizer University of Urbino (2009).

(10) Regions of Multistability in some Low-Dimensional Logistic Models with Excitation Type Coupling Proceedings of the NOMA'09 Conference (Urbino - Italy), pp. 6-9, Organizer University of Urbino (2009).

(9) Introducing Chaos in Economic Gas-like Models Proceedings of the CHAOS'09 Conference (Chania - Crete_Greece), to appear in the website of the Conference, pp. 1-8 (2009).

(8) Role of Symmetry and Geometry in a Chaotic Pseudorandom Bit Generator International Journal of Computer Science and Software Technology, vol. 2, pp. 43-53 (2009).

(7) Pseudo-Random Bit Generation based on 2D Chaotic Maps of Logistic Type and its Applications in Chaotic Cryptography Proceedings of the ICCSA'08 Conference (Perugia - Italy), Part II, Lecture Notes in Computer Science, vol. 5073, pp. 784-796 (2008).

(6) An Economic Model of Coupled Exponential Maps Proceedings of the NOMA'07 Conference (Toulouse - France), pp. 54-56, Organizer LATTIS-INSA, Toulouse University (2007).

(5) Route to Chaos in Three-Dimensional Maps of Logistic Type Proceedings of the ECIT'04 Conference (Batschuns - Austria), Grazer Mathematische Berichte, vol. 350, pp. 82-95 (2006).

(4) Basin Bifurcations in a Two-Dimensional Logistic Map Proceedings of the ECIT'02 Conference (Evora - Portugal), Grazer Mathematische Berichte, vol. 346, pp. 123-136 (2004).

(3) Complex Patterns on the Plane: Different Types of Basin Fractalization in a Two-Dimensional Mapping International Journal of Bifurcation and Chaos, TUTORIAL, vol. 13, pp. 287-310 (2003).

(2) Dynamics of Two Logistic Maps with a Multiplicative Coupling International Journal of Bifurcation and Chaos, vol. 2, pp. 421-425 (1992).

(1) Dynamics of Maps with a Global Multiplicative Coupling Chaos, Solitons and Fractals, vol. 1, pp. 511-528 (1991).

Cellular Automata and Binary Sequences


(7) Symmetry Pattern Transition in Cellular Automata with Complex Behavior Chaos, Solitons and Fractals, vol. 37, pp. 638-642 (2008).

(6) Self-Synchronization of Cellular Automata: an Attempt to Control Patterns Proceedings of the ICCS'06 Conference (Reading - England), Part III, Lecture Notes in Computer Science, vol. 3993, pp. 353-359 (2006).

(5) Order in Binary Sequences and the Routes to Chaos Chaos, Solitons and Fractals, vol. 27, pp. 1316-1320 (2006).

(4) Detecting Synchronization in Spatially Extended Discrete Systems by Complexity Measurements Discrete Dynamics in Nature and Society, vol. 9, pp. 337-342 (2005).

(3) A Model of Characteristic Earthquakes and its Implications for Regional Seismicity Terra Nova, vol. 16, pp. 116-120 (2004).

(2) A Binary Approach to the Lorenz Model Chaos, Solitons and Fractals, vol. 8, pp. 1-6 (1997).

(1) Horseshoe Implications Physical Review E, vol. 48, pp. 4297-4304 (1993).

Local Reports / Divulgation Articles


(22) Apunte sobre el Caos Estadístico El Librepensador, diario digital online, sección FFCT, Setiembre (2009).

(21) El Método de Análisis Homotópico Aplicado a la Ecuación de van der Pol Actas del XXI Congreso de Ecuaciones Diferenciales y Aplicaciones, CEDYA-2009-Ciudad_Real, pp. 1-5, sección EDO (2009).

(20) Una Visión Alternativa de la Crisis El Librepensador, diario digital online, sección FFCT, Diciembre (2008).

(19) Comportamiento de la Complejidad Estadística en algunos Sistemas Cuánticos Anales del Centro Asociado de la UNED en Calatayud, vol. XVI, pp. 99-106 (2008).

(18) Una Aproximación a la Complejidad Estadística El Librepensador, diario digital online, sección FFCT, Octubre (2008).

(17) Influencia de la Topología en la Distribución de Riqueza en un Modelo Determinista de Intercambio Económico Revista Científica UNET, San Cristóbal (Edo. Táchira), Venezuela, por aparecer (2008).

(16) Generación Pseudoaleatoria basada en Mapas Caóticos: Beneficios de sus Simetrías y de sus Propiedades Geométricas Actas de la X Reunión Española sobre Criptología y Seguridad de la Información, RECSI-2008-Salamanca, Ed. Signe S.A., pp. 91-99 (2008).

(15) Auto-Sincronización de Autómatas Celulares Revista de divulgación "Investigación y Ciencia", Sección 'Ciencia y Sociedad' de la entrega de Mayo de 2008 (núm. 380), pp. 9-11 (2008).

(14) Generación de Bits Pseudoaleatorios con Mapas Caóticos de tipo Logístico Anales del Centro Asociado de la UNED en Calatayud, vol. XV, pp. 87-106 (2007).

(13) Comportamientos de Tipos Pareto y Gibbs-Boltzmann en un Modelo Económico de Mapas Acoplados Actas de la XXXI Reunión Bienal de Física, BIENAL-2007-Granada, CD-Rom: Sesión 'Dinámica Espacio-Temporal y Transiciones de Fase', pp. 1-4 (2007).

(12) Modelos para la Simbiosis, Depredador-Presa y Competición Actas del II Simposio de Inteligencia Computacional, Simposio S15, CEDI-2007-Zaragoza, pp. 475-482, Ed. Thomson (2007).

(11) Modelos Logísticos en Dinámica de Poblaciones: Simbiosis, Depredador-Presa y Competición Anales del Centro Asociado de la UNED en Calatayud, vol. XIV, pp. 79-87 (2006).

(10) Soluciones Periódicas y Caóticas en diferentes Modelos derivados de la Ecuación de van der Pol Actas del XIX Congreso de Ecuaciones Diferenciales y Aplicaciones, CEDYA-2005-Leganés, pp. 1-2, sección EDO (2005).

(9) Competición de Estructuras en Autómatas Celulares Anales del Centro Asociado de la UNED en Calatayud, vol. XIII, pp. 161-171 (2005).

(8) Sincronización Estocástica de Autómatas Celulares Actas del I Simposio de Sistemas Complejos, Simposio S18, CEDI-2005-Granada, pp. 29-35, Ed. Thomson (2005).

(7) El Reto de la Inteligencia Artificial http://www.libredebate.com/, doc200505170600.html (2005) ; El Librepensador, diario digital online, Junio (2008).

(6) Estrategias, Ideas y Problemas Recursivos Anales del Centro Asociado de la UNED en Calatayud, vol. XII, pp. 243-262 (2004).

(5) Nota sobre Sistemas fuera del Equilibrio y Complejidad Anales del Centro Asociado de la UNED en Calatayud, vol. XI, pp. 117-123 (2003).

(4) Dinámica de una Partícula moviéndose sobre la Superficie de un Cono Invertido Anales del Centro Asociado de la UNED en Calatayud, vol. X, pp. 119-135 (2002).

(3) Sobre Inestabilidades y Complejidad Memoria de Tesis, Dpto. de Física y Matemática Aplicada, Universidad privada de Navarra, pp. 1-175 (1994).

(2) Transición al Caos en Familias de Mappings Bidimensionales Trabajo de Investigación (Tesina), Dpto. de Física y Matemática Aplicada, Universidad privada de Navarra, pp. 1-60 (1991).

(1) Generación por Hardware de Bits Aleatorios Informe interno, Dpto. de Electrónica, Universidad de Zaragoza, pp. 1-50 (1990).

News


(1) Visita del profesor Alberto Robledo de la UNAM (México) El prosefor Alberto Robledo, premio Nacional de Ciencias y Artes de México, visita Zaragoza, 2009.

Statistical Complexity


(18) A Generalized Statistical Complexity Measure: Applications to Quantum Systems Journal of Mathematical Physics, to appear (2009).

(17) Statistical Complexity and Nontrivial Collective Behavior in Electroencephalographic Signals International Journal of Bifurcation and Chaos, special issue on "Chaos and Dynamics in Biological Networks", to appear (2009).

(16) Generalized Statistical Complexity and Fisher-Rényi Entropy Product in the H-Atom International Review of Physics (IREPHY), vol. 3, pp. 207-211 (2009).

(15) Extremum Complexity in the Monodimensional Ideal Gas: the Piecewise Uniform Density Distribution Approximation Physica A, vol. 388, pp. 4364-4378 (2009).

(14) Alternative Evaluation of Statistical Indicators in Atoms: the Non-Relativistic and Relativistic Cases Physics Letters A, vol. 373, 2549-2551 (2009).

(13) Complexity Invariance by Replication in the Quantum Square Well Open Systems and Information Dynamics, vol. 16 (4), to appear (2009).

(12) Complexity in Atoms: an Approach with a new Analytical Density International Review of Physics (IREPHY), vol. 2, pp. 223-230 (2008).

(11) Some Features of the Statistical Complexity and Fisher-Shannon Information in the Quantum Isotropic Harmonic Oscillator Journal of Physics A: Mathematical and Theoretical, vol. 41, pp. 265303 (7) (2008).

(10) Statistical Complexity and Fisher-Shannon Information in the H-Atom Physics Letters A, vol. 372, pp. 5283-5286 (2008).

(9) Geometrical Derivation of the Boltzmann Factor American Journal of Physics, vol. 76, pp. 780-781 (2008).

(8) Derivation of the Maxwellian Distribution from the Microcanonical Ensemble American Journal of Physics, vol. 75, pp. 752-753 (2007).

(7) Extremum Complexity Distribution of a Monodimensional Ideal Gas out of Equilibrium Physica A, vol. 382, pp. 523-530 (2007).

(6) A Method to Discern Complexity in Two-Dimensional Patterns generated by Coupled Map Lattices Physica A, vol. 355, pp. 633-640 (2005).

(5) Shannon information, LMC complexity and Renyi Entropies: a straightforward Approach Proceedings of the International BIFI'04 Conference (Zaragoza - Spain), Biophysical Chemistry, vol. 115, pp. 215-218 (2005).

(4) Features of the Extension of a Statistical Measure of Complexity to Continuous Systems Physical Review E, vol. 66, pp. 011102(6) (2002).

(3) Complexity in some Physical Systems Proceedings of the SPACE-TIME CHAOS'00 Conference (Pamplona - Spain), International Journal of Bifurcation and Chaos, vol. 11, pp. 2669-2673 (2001).

(2) Tendency toward Maximum Complexity in a Non-Equilibrium Isolated System Physical Review E, vol. 63, pp. 066116(9) (2001).

(1) A Statistical Measure of Complexity Physics Letters A, vol. 209, pp. 321-326 (1995).

Nonlinear Oscillations: Mathematical Aspects


(11) The Homotopy Analysis Method and the Liénard Equation International Journal of Computer Mathematics, to appear (2009).

(10) The Limit Cycles of Liénard Equations in the Weakly Nonlinear Regime Far East Journal of Dynamical Systems, to appear (2009).

(9) Formulas for the Amplitude of the van der Pol Limit Cycle through the Homotopy Analysis Method Scholarly Research Exchange, Article ID 854060, volume 2009 (2009).

(8) Approximating the Amplitude and Form of Limit Cycles in the Weakly Non-Linear Regime of Liénard Systems Chaos, Solitons and Fractals, vol. 34, pp. 1307-1317 (2007).

(7) Registering Seconds with a Conic Clock Chaos, Solitons and Fractals, vol. 23, pp. 67-72 (2005).

(6) Symmetry induced Oscillations in four-dimensional Models deriving from the van der Pol equation Chaos, Solitons and Fractals, vol. 21, pp. 55-61 (2004).

(5) Number and Amplitude of Limit Cycles emerging from Topologically equivalent Centers Chaos, Solitons and Fractals, vol. 17, pp. 135-143 (2003).

(4) Sliding on the inside of a Conical Surface European Journal of Physics, vol. 23, pp. 579-589 (2002).

(3) Bifurcation Curves of Limit Cycles in some Liénard Systems International Journal of Bifurcation and Chaos, vol. 10, pp. 971-980 (2000).

(2) The Limit Cycles of Liénard Equations in the Strongly Nonlinear Regime Chaos, Solitons and Fractals, vol. 11, pp. 747-756 (2000).

(1) Transition between Two Oscillation Modes Physical Review E, vol. 55, pp. R3820-R3823 (1997).

Instabilities and Other Stuff


(4) Symmetry induced Heteroclinic Cycles in a CO2 Laser International Journal of Bifurcation and Chaos, vol. 14, pp. 1121-1127 (2004).

(3) A Note on Quantum Braking Journal Physics A: Mathematical and General, vol. 28, pp. L255-L259 (1995).

(2) Nonlinear Interaction of Transversal Modes in a CO2 Laser Physical Review A, vol. 49, pp. 4916-4921 (1994).

(1) Mode-Mode Interactions for a CO2 Laser with Imperfect O(2) Symmetry Physical Review A, vol. 47, pp. 500-509 (1993).

Blog List


COLLABORATIONS Preprints published in Arxiv

DEMONSTRATIONS WITH MATHEMATICA Dynamic presentations of different 2D discrete mappings displaying chaotic behavior

CAPRICHOS GOYESCOS Writings about reality and other funny speculations

ESPACIO DE PROGRAMACION I Gradually learning to program in C

ESPACIO DE PROGRAMACION II Blog with different types of computer science news

EL_LIBREPENSADOR.COM A new online journal (in spanish)

SESSION ON STATISTICAL COMPLEXITY Meeting to celebrate on 3-6 May, Tunisia

IJAMAS: INTERNATIONAL JOURNAL OF APPLIED MATHEMATICS AND STATISTICS Call for papers for a special Issue on "Statistical Chaos and Complexity"

Teaching Activities / Courses


(11) Curso de Programación I (para Estadística) Dpto. de Informática e Ingeniería de Sistemas, Universidad de Zaragoza (2005-presente).

(10) Curso de Programación II (para Estadística) Dpto. de Informática e Ingeniería de Sistemas, Universidad de Zaragoza (2001-presente).

(9) Tutor de Estructura y Tecnología de Computadores (para Ing. Téc. Informática) Centro Asociado de la UNED en Calatayud (2005-presente).

(8) Tutor de Física y Electrónica Digital (para Ing. Téc. Informática) Centro Asociado de la UNED en Calatayud (2005- presente).

(7) Tutor de Laboratorio de Física (para Titulaciones Científico-Técnicas) Centro Asociado de la UNED en Calatayud (2000-2009)

(6) Curso de Inteligencia Artificial I (para Estadística) Dpto. de Informática e Ingeniería de Sistemas, Universidad de Zaragoza (2001-2004).

(5) Curso de Doctorado "Osciladores no-lineales, Caos y Complejidad" Facultad de Ciencias, Universidad de Zaragoza (1998-2000,2004-2005).

(4) Curso de Geodesia (para Matemáticas) Dpto. de Física Teórica, Universidad de Zaragoza (2000).

(3) Problemas de Mecánica Estadística (para Físicas) Dpto. de Física Teórica, Universidad de Zaragoza (1998-1999).

(2) Problemas de Mecánica (para Ing. Téc. Industrial) Dpto. de Física, Universidad pública de Navarra (1993-1994).

(1) Problemas de Física General (para Farmacia) Dpto. de Física y Matemática Aplicada, Universidad privada de Navarra (1990-1992).

Research Advisor Activities


(2) Carmen Pellicer-Lostao Doctoral work under supervision, Universidad de Zaragoza, Spain.

(1) Javier González-Estévez Research stages in 2006 and 2007 coming from Universidad Nacional Experimental del Táchira, San Cristóbal, Venezuela.

Honors / Awards


(3) Premio al Mejor Trabajo ("Best Paper Award") presentado en el Congreso ICCS-2009 International Conference on Computational Science, Baton Rouge, Lousiana, USA, 2009.

(2) Segundo Accésit del "I Premio Santander" al Uso Innovador de las TIC en la Enseñanza Universitaria Cátedra Santander de la Universidad de Zaragoza, 2009.

(1) Reseña Biográfica en la Enciclopedia "WHO IS WHO IN THE WORLD" Reseña recogida en las Ediciones de 2005, 2006, 2007, 2008.