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  1. M. A. Bravo, M. G. Molina, M. Martinez-Ledesma, B. de H. Barbás, B. Urra, A. G. Elias, J. Rodrigues de Souza, C. Villalobos, J. Namour, E. Ovalle, J. V. Venchiarutti, S. B., J. C. Valdés-Abreu, E. Guillermo, E. Rojo, L. de Pasquale, E. Carrasco, R. Leiva, C. Castillo Rivera, A Foppiano, M. Milla, P. Muñoz, M. Stepanova, J A. Valdivia, M. Cabrera, Ionospheric Response Modeling under Eclipse Conditions: Evaluation of December 14, 2020, Total Solar Eclipse Prediction over the South American sector, Frontiers in Astronomy and Space Sciences, , , 2022,
  2. S. Gomez Ramirez, J. Hoyos, J. A. Valdivia, Particle-in-cell method for plasmas in the one-dimensional electrostatic limit, American Journal of Physics, , , 2022,
  3. P. Medina, S. C. Carrasco, M. S. Jofré, J. Rogan, J. A. Valdivia, Characterizing diffusion processes in city traffic, Chaos Solitons and Fractals, 165, 112846, 2022,https://doi.org/10.1016/j.chaos.2022.112846
  4. L. Becerra, A. Reisenegger, J. A. Valdivia, M. Gusakov, Stability of axially symmetric magnetic fields in stars, Monthly Notices of the Royal Astronomical Society, 517, 560-568, 2022,https://doi.org/10.1093/mnras/stac2704
  5. P. Medina, S. Carrasco, P. Correa-Burrows, J. Rogan. J. A. Valdivia, Nontrivial and Anomalous Transport on Weighted Complex Networks, Communications in Nonlinear Science and Numerical Simulation, 114, 106684, 2022,https://doi.org/10.1016/j.cnsns.2022.106684
  6. L. Becerra, A. Reisenegger, J. A. Valdivia, M. E. Gusakov, Evolution of random initial magnetic fields in stably stratified and barotropic stars, Monthly Notices of the Royal Astronomical Society, 511, 732-745, 2022,https://doi.org/10.1093/mnras/stac102
  7. S. Carrasco, J. Rogan, J. A. Valdivia, B. Y. Chang, V. Malinovsky, I. R. Sola, Circularly polarized light-induced potentials and the demise of excited states, Physical Chemistry Chemical Physics, 24, 2966-2973, 2022,https://doi.org/10.1039/D1CP04523G
  8. C. M. Espinoza, P. S. Moya, M. Stepanova, J. A. Valdivia, R. E. Navarro, Spontaneous Magnetic Fluctuations and Collisionless Regulation of Turbulence in the Earth's Magnetotail, Astrophysical Journal, 914, 8, 2022,https://doi.org/10.3847/1538-4357/ac33a2
  9. D. A. León, J. A. Valdivia, V. A. Bucheli, A revision of seismicity models based on complex systems and earthquake networks, Journal of Seismology, 26, 137-145, 2022,https://doi.org/10.1007/s10950-021-10017-0
  10. J. Meisel, F. Montes, A. Ramirez, P. Lemoine, J. A. Valdivia, R. Zarama, Network Analysis of Collaboration in Networked Universities, Kybernetes, 51, 1341-1364, 2022,https://doi.org/10.1108/K-10-2020-0648
  11. R. A. Miranda, J. A. Valdivia, A. C.-L. Chian, P. R. Muñoz, Complexity of magnetic-field turbulence at reconnection exhausts in the solar wind at 1 AU, Astrophysical Journal, 923, 132, 2021,https://doi.org/10.3847/1538-4357/ac2dfe
  12. M. Ramírez, B. A. Toledo, F. Torres, J. Rogan, P. Correa-Burrows, J. A. Valdivia, Pedestrian Flow in 2D: Optimal psychological stress leads to less evacuation time and decongestion, Physical Review E, 104, 024312, 2021,https://doi.org/10.1103/PhysRevE.104.024312
  13. B. Toledo, P. Medina, S. Blunier, M. Stepanova, J. Rogan, J. A. Valdivia, Multifractal features for the northern hemisphere geomagnetic field fluctuations at Swarm altitude, Entropy, To be Published, , , 2021,
  14. S. Blunier, B. Toledo, J. Rogan, J. A. Valdivia, A Nonlinear System Science Approach to Find the Robust Solar Wind Drivers of the Multivariate Magnetosphere, Space Weather, 19, e2020SW002634, 2021,https://doi.org/10.1029/2020SW002634
  15. S. Carrasco, P. Medina, J. Rogan, J. A. Valdivia, Simulating the city traffic complexity induced by traffic light periods, Chaos, 31, 043111, 2021,https://doi.org/10.1063/5.0041028
  16. J. Clark, F. Torres, L. Morales, J. A. Valdivia, Nonlocal Self-Organization of a Dissipative System, Physical Review E, 103, 032127, 2021,https://doi.org/10.1103/PhysRevE.103.032127
  17. S. Carrasco, P. Medina, J. Rogan, J. A. Valdivia, Simulations suggest that navigation software may not be as efficient as expected for city traffic, Chaos, 31, 033103, 2021,https://doi.org/10.1063/5.0022946
  18. S. Carrasco, J. Rogan, J. A. Valdivia, I. R. Sola, Anti-alignment driven dynamics in the excited states of molecules under strong fields, Physical Chemistry Chemical Physics, 23, 1936-1942, 2021,https://doi.org/10.1039/D0CP05692H
  19. P. Medina, S. Carrasco, J. Rogan, F. Montes, J. D. Meisel, P. Lemoine, C. L. Peñas, J. A. Valdivia, Is Social Network Approach Relevant to Football Results?, Chaos Solitons and Fractals, 142, 110369, 2021,https://doi.org/10.1016/j.chaos.2020.110369
  20. L. F. Gutiérrez, R. Zarama, J. A. Valdivia, Studying Three Abstract Artists based on a Multiplex Network Knowledge Representation, Complexity, 2021, 8506571, 2021,https://doi.org/10.1155/2021/8506571
  21. S. Yun, S. Carrasco, J. Rogan, P. Correa-Burrows, J. A. Valdivia, Stability and robustness of asymptotic autocatalytic systems, Scientific Reports, 10, 15498, 2020,https://doi.org/10.1038/s41598-020-72580-9
  22. F. Castillo, A. Reisenegger, J. A. Valdivia, Two-fluid simulations of the magnetic field evolution in neutron star cores in the weak-coupling regime, Monthly Notices of the Royal Astronomical Society, 498, 3000–3012, 2020,https://doi.org/10.1093/mnras/staa2543
  23. R. E. Navarro, V. Muñoz, J. A. Valdivia, P. S. Moya, Feasibility of Ion-Cyclotron Resonant Heating in the Solar Wind, Astrophysical Journal Letters, 898, L9, 2020,https://doi.org/10.3847/2041-8213/aba0ae
  24. J. E. Borovsky, G. L. Delzanno, J. A. Valdivia, P. S. Moya, M. Stepanova, J. Birn, L. W. Blum, W. Lotko, M. Hesse, Outstanding Questions in Magnetospheric Plasma Physics: The Pollenzo View, Journal of Atmospheric and Solar-Terrestrial Physics, 208, 105377, 2020,https://doi.org/10.1016/j.jastp.2020.105377
  25. S. Carrasco, P. Medina, J. Rogan, J. A. Valdivia, Does Following Optimized Routes for Single Cars Improve Car Routing?, Chaos, 30, 063148, 2020,https://doi.org/10.1063/1.5145309
  26. J. D. Meisel, A. M. Ramirez, V. Esguerra, F. Montes, I. Stankov, O. L. Sarmiento, J. A. Valdivia, Using a system dynamics model to study the obesity transition by socioeconomic status in Colombia at the country, regional, and department levels, BMJ Open, 2020, 10:e036534, 2020,https://doi.org/10.1136/bmjopen-2019-036534
  27. R. I Gonzalez, J. Rojas-Nunez, F. J. Valencia, F. Munoz, S. E. Baltazar, S. Allende, J. Rogan, J. A. Valdivia, M. Kiwi, R. Ramirez, J. A. Greathouse, Imogolite in water: Simulating the effects of nanotube curvature on structure and dynamics, Applied Clay Science, 191, 105582, 2020,https://doi.org/10.1016/j.clay.2020.105582
  28. M. Castro, D. Mancilla, J. A. Valdivia, S. Allende, Magnetostatic interaction between two Bubble Skyrmions, Journal of Physics: Condensed Matter, 32, 175801, 2020,https://doi.org/10.1088/1361-648X/ab6aec
  29. F. Montes, A. M. Jaramillo, J. D. Meisel, A. Diaz-Guilera, J. A. Valdivia, O. L. Sarmiento, R. Zarama, Benchmarking seeding strategies for spreading processes in social networks: an interplay between influencers, topologies, and sizes, Scientific Reports, 10, 3666, 2020,https://doi.org/10.1038/s41598-020-60239-4
  30. S. Carrasco, J. Rogan, J. A. Valdivia, Speeding up maximum population transfer in periodically driven multi-level quantum systems, Scientific Reports, 9, 16270, 2019,https://doi.org/10.1038/s41598-019-52595-7
  31. R. O. Medina, J. Rogan, M. Ramirez, B. A. Toledo, J. A. Valdivia, Modeling interacting city traffic with finite acceleration and braking capacities, Chaos, 29, 093136, 2019,https://doi.org/10.1063/1.5095628
  32. M. Ramirez, F. Torres, B. A. Toledo, M. Coello, P. Correa-Burrows, J. Rogan, J. A. Valdivia, Unpredictability in Pedestrian Flow: the impact of stochasticity and anxiety in the event of an emergency, Physica A, 531, 121742, 2019,https://doi.org/10.1016/j.physa.2019.121742
  33. M. Ramírez, R. I. González, S. E. Baltazar, J. Rojaz-Nunez, S. Allende, J. A. Valdivia, J. Rogan, M. Kiwi, F. J. Valencia, Thermal Stability of Aluminum Oxide Nanoparticles: Role of Oxygen Concentration, Inorganic Chemistry Frontiers, 6, 1701-1706, 2019,https://doi.org/10.1039/C8QI01398E
  34. M. Stepanova, E.E. Antonova, P.S. Moya, V.A. Pinto, J. A. Valdivia, , Multi-satellite analysis of plasma pressure in the inner magnetosphere during the 1 June 2013 geomagnetic storm, Journal of Geophysical Research, 124, 1187-1202, 2019,https://doi.org/10.1029/2018JA025965
  35. P. Medina, N. Ariza, P. Navas, F. Rojas, G. Parody, J. A. Valdivia, R. Zarama, J. F. Penagos, An Unintended Effect of Financing the University Education of the Most Brilliant and Poorest Colombian Students: The Case of the Intervention of the Ser Pilo Paga Program, Complexity, 2018, 3528206, 2018,https://doi.org/10.1155/2018/3528206
  36. S. Carrasco, J. Rogan, J. A. Valdivia, A simplification of the molecular dynamics that preserves thermodynamics, Physical Review E, 98, 063308, 2018,https://doi.org/10.1103/PhysRevE.98.063308
  37. F. Valencia, R. Gonzalez, H. Vega, C. Ruestes, J. Rogan, J. A. Valdivia, E. Bringa, M. Kiwi, Mechanical Properties Obtained by Indentation of Hollow Pd Nanoparticles, Journal of Physical Chemistry C, 122, 25035-25042, 2018,https://doi.org/10.1021/acs.jpcc.8b07242
  38. P. Medina, J. Clark, M. Kiwi, F. Torres, J. Rogan, J. A. Valdivia, The Stochastic Transport Dynamics of a Conserved Quantity on a Complex Network, Scientific Reports, 8, 14288, 2018 ,https://doi.org/10.1038/s41598-018-32677-8
  39. J. Figueroa, J. Rogan, J. A. Valdivia, M. Kiwi, G. Romero, F. Torres, Nucleation of superfluid-light domains in a quenched dynamics, Scientific Reports, 8, 12766, 2018,https://doi.org/10.1038/s41598-018-30789-9
  40. J. Borovsky, J. A. Valdivia, The Earth's Magnetosphere: A Systems Science Overview and Assessment, Surveys in Geophysics, 39, 817-859, 2018,https://doi.org/10.1007/s10712-018-9487-x
  41. D. A. León, J. A. Valdivia, V. A. Bucheli, Modeling of Colombian seismicity as small world networks, Seismological Research Letters, 89, 1807-1816, 2018,https://doi.org/10.1785/0220180076
  42. G. S. Lakhina, B. T. Tsurutani, G. J. Morales, A. Pouquet, M. Hoshino, J. A. Valdivia, Y. Narita, R. Grimshaw, Preface: Nonlinear waves and chaos, Nonlinear Processes in Geophysics, 25, 477-479, 2018,https://doi.org/10.5194/npg-25-477-2018
  43. C. M. Espinoza, M. Stepanova, P. S. Moya, E. E. Antonova, J. A. Valdivia, Ion and electron -distribution functions along the plasma sheet, Geophysical Research Letters, 45, 6362–6370, 2018,https://doi.org/10.1029/2018GL078631
  44. P. N. Reyes, F. J. Valencia, H. Vega, C. Ruestes, J. Rogan, J. A. Valdivia, M. Kiwi, The stability of hollow nanoparticles and the simulation temperature ramp, Inorganic Chemistry Frontiers, 5, 1139-1144, 2018,https://doi.org/10.1039/C7QI00822H
  45. J. D. Meisel, O. L. Sarmiento, C. Olaya, P. D. Lemoine, J. A. Valdivia, R. Zarama, Towards a novel model for studying the nutritional stage dynamics of the Colombian population by age and socioeconomic status, Plos One, 13, e0191929, 2018,https://doi.org/10.1371/journal.pone.0191929
  46. R. I. González, F. J. Valencia, J. Rogan, J. A. Valdivia, J. Sofo, M. Kiwi, F. Munoz, Bending Energy of 2D Materials: Graphene, MoS 2 and Imogolite, RSC Advances, 8, 4577-4583, 2018,https://doi.org/10.1039/C7RA10983K
  47. V. Muñoz, M. Domínguez, J. A. Valdivia, S. Good, G. Nigro, V. Carbone, Evolution of fractality in space plasmas of interest to geomagnetic activity, Nonlinear Processes in Geophysics, 25, 1-10, 2018,https://doi.org/10.5194/npg-25-1-2018
  48. D. Pasten, F. Torres, B. Toledo, V. Munoz, J. Rogan, J. A. Valdivia, Non-universal critical exponents in earthquake complex networks, Physica A, 491, 445-452, 2018,https://doi.org/10.1016/j.physa.2017.09.064
  49. S. Guillier. V. Munoz, J. Rogan, R. Zarama, J. A. Valdivia, Optimization of Spatial Complex Networks, Physica A, 467, 465-473, 2017,https://doi.org/10.1016/j.physa.2016.09.011
  50. S. Carrasco, J. Rogan, J. A. Valdivia, Controlling the Quantum State with a time varying potential, Scientific Reports, 7, 13217, 2017,https://doi.org/10.1038/s41598-017-13313-3
  51. F. Valencia R. I. Gonzalez, J. A. Valdivia, M. Kiwi, E. Bringa, J. Rogan, Inducing Porosity on Hollow Nanoparticles by Hypervelocity Impacts, Journal of Physical Chemistry C, 121, 17856-17861, 2017,https://doi.org/10.1021/acs.jpcc.7b03126
  52. F. Castillo, A. Reisenegger, J. A. Valdivia, Magnetic field evolution and equilibrium configurations in neutron star cores: the effect of ambipolar diffusion, Monthly Notices of the Royal Astronomical Society, 1, 507-522, 2017,https://doi.org/10.1093/mnras/stx1604
  53. J. Wanliss, V. Munoz, D. Pastten, B. Toledo, J. A. Valdivia, Critical Behavior in Earthquake Energy Dissipation, European Physical Journal B, 90, 167, 2017,https://doi.org/10.1140/epjb/e2017-70657-y
  54. M. H. Denton, J. E. Borovsky, M. Stepanova, J. A. Valdivia, Unsolved Problems of Magnetospheric Physics, Journal of Geophysical Research, 121, 10783-10785, 2016,https://doi.org/10.1002/2016JA023362
  55. F. J. Valencia, R. I. Gonzalez, D. Tramontina, J. Rogan, J. A. Valdivia, M. Kiwi, E. M. Bringa, Hydrogen Storage in Palladium Hollow Nanoparticles, Journal of Physical Chemistry C, 120, 23836-23841, 2016,https://doi.org/10.1021/acs.jpcc.6b07895
  56. R. A. Lopez, P. S. Moya. R. E. Navarro, J. A. Araneda, V. Munoz, A. F. Vinas, J. A. Valdivia, Relativistic cyclotron instability in anisotropic plasmas, Astrophysical Journal, 832, 36, 2016,https://doi.org/10.3847/0004-637X/832/1/36
  57. S. Carrasco, A. Varas, J. Rogan, M. Kiwi, J. A. Valdivia, Multibody expansion of particle interactions: How many-body is a particular element in a cluster?, Physical Review B, 94, 075435, 2016,https://doi.org/10.1103/PhysRevB.94.075435
  58. R. Gonzalez, J. Rogan, E. Bringa, J. A. Valdivia, Mechanical Response of Aluminosilicate Nanotubes under Compression, Journal of Physical Chemistry C, 120, 14428-14434, 2016,https://doi.org/10.1021/acs.jpcc.6b04564
  59. D. Pasten, F. Torres, B. Toledo, V. Munoz. J. Rogan, J. A. Valdivia, Time-based analysis before and after the Mw8.3 Illapel earthquake 2015 Chile, Pure and Applied Geophysics, 173, 2267–2275, 2016,https://doi.org/10.1007/s00024-016-1335-7
  60. M.A. Diaz, J.C. Zagal, C. Falcon, M. Stepanova, J. A. Valdivia, M . Martinez-Ledesma, J Diaz a, F.R. Jaramillo, N. Romanova. E . Pacheco, M. Milla, M Orchard, J Silva, F.P. Mena, New opportunities offered by Cubesats for space research in Latin America: the SUCHAI project case, Advances in Space Research, 58, 2134-2147, 2016,https://doi.org/10.1016/j.asr.2016.06.012
  61. J. A. Valdivia, B. A. Toledo, N. Gallo, V. Munoz, J. Rogan, M. Stepanova, P. S. Moya, R. E. Navarro, A. Vinas, J. Araneda, R. A. Lopez, M. Diaz, Magnetic Fluctuations in Anisotropic Space Plasmas: the effect of the plasma environment, Advances in Space Research, 58, 2126-2133, 2016,https://doi.org/10.1016/j.asr.2016.04.017
  62. P. D. Lemoine, J. M. Cordovez, J. M. Zambrano, O. L. Sarmiento, J. D. Meisel, J. A. Valdivia, R. Zarama, Using Agent Based Modelling to assess the Effect of Increased Bus Rapid Transit System Infrastructure on Walking for Transportation, Preventive Medicine, 88, 39-45, 2016,https://doi.org/10.1016/j.ypmed.2016.03.015
  63. M. Stepanova, J. A. Valdivia, Contribution of Latin-American scientists to the study of the magnetosphere of the Earth. A Review, Advances in Space Research, 58, 1968-1985, 2016,https://doi.org/10.1016/j.asr.2016.03.023
  64. J. D. Meisel, O. Sarmiento, C. Olaya, J. A. Valdivia, R. Zarama, A system dynamics model of the nutritional stages of the Colombian population, Kybernetes, 45, 554-570, 2016,https://doi.org/10.1108/K-01-2015-0010
  65. M. Ramírez, J. Rogan, J. A. Valdivia, A. Varas, M. Kiwi, Diversity characterization of binary clusters by means of a generalized distance, Zeitschrift für Physikalische Chemie (International journal of research in physical chemistry and chemical physics), 230, 977-989, 2016,https://doi.org/10.1515/zpch-2015-0716
  66. F. Castillo, B. A. Toledo, V. Munoz, J. Rogan, R. Zarama, M. Kiwi, J. A. Valdivia, Temporal and spatial disorder during jamming in a city traffic model, Journal of Cellular Automata, 11, 381-398, 2016,
  67. F. Torres, J. Rogan, M. Kiwi, J. A. Valdivia, Topological Phase Transition of a Fractal Spin System: the relevance of the network complexity, AIP Advances, 6, 055703, 2016,https://doi.org/10.1063/1.4942826
  68. J.P. Mitchell, J. Braithwaite, A. Reisenegger, H. Spruit, J. A. Valdivia, N. Langer, Instability of Magnetic Equilibria in Barotropic Stars, Monthly Notices of the Royal Astronomical Society, 447, 1213, 2015,https://doi.org/10.1093/mnras/stu2514
  69. F. Munoz, A. Varas, J. Rogan, J. A. Valdivia, M. Kiwi, Au_13−n Ag_n Clusters: A Remarkable Simple Trend, Physical Chemistry Chemical Physics, 17, 30492-30498, 2015,https://doi.org/10.1039/c5cp05664k
  70. R. A. Lopez, V. Munoz, A. F. Vinas, J. A. Valdivia, Propagation of localized structures in relativistic magnetized electron-positron plasmas using particle-in-cell simulations, Physics of Plasmas, 22, 092115, 2015,https://doi.org/0.1063/1.4930266
  71. R. A. Lopez, R. E. Navarro, P. S. Moya, , A. F. Vinas, J. A. Araneda, V. Munoz, J. A. Valdivia, Spontaneous Electromagnetic Fluctuations in a Relativistic Magnetized Electron-Positron Plasma, Astrophysical Journal, 810, 103, 2015,https://doi.org/10.1088/0004-637X/810/2/103
  72. A. F. Viñas, P. S. Moya, R. E. Navarro, J. A. Valdivia, J. A. Araneda, V. Muñoz, Electromagnetic Fluctuations of the Whistler Cyclotron and Firehose Instabilities in a Maxwellian and Tsallis-kappa-like Plasma, Journal of Geophysical Research, 120, 3307-3317, 2015,https://doi.org/10.1002/2014JA020554
  73. J. Villalobos, V. Mu noz, J. Rogan, R. Zarama, J. F. Penagos, B. Toledo, J. A. Valdivia, Modeling a bus through a sequence of traffic lights, Chaos, 25, 073117, 2015,https://doi.org/10.1063/1.4926669
  74. R. E. Navarro, V. Munoz, J. Araneda, A. F. Vinas, P. S. Moya, J. A. Valdivia, Magnetic Alfven-Cyclotron Fluctuations of Anisotropic Nonthermal Plasmas, Journal of Geophysical Research, 120, 2382-2396, 2015,https://doi.org/10.1002/2014JA020550
  75. C. Armaza, A. Reisenegger, J. A. Valdivia, On Magnetic Equilibria in Barotropic Stars, Astrophysical Journal, 802, 121, 2015,https://doi.org/10.1088/0004-637X/802/2/121
  76. J. Clark, M. Kiwi, F. Torres, J. Rogan, J. A. Valdivia, Generalization of the Ehrenfest urn model to a complex network, Physical Review E, 92, 012103, 2015,https://doi.org/10.1103/PhysRevE.92.012103
  77. R. Gonzalez, R. Ramirez, J. Rogan, J. A. Valdivia, F. Munoz, F. Valencia, M. Ramirez, M. Kiwi, A Model for Self-Rolling of an Aluminosilicate Sheet into a Single Walled Imogolite Nanotube, Journal of Physical Chemistry C, 118, 28227-28233, 2014,https://doi.org/10.1021/jp508637q
  78. P. Marchant, A. Reisenegger, J. A. Valdivia, J. Hoyos, Stability of Hall Equilibria in Neutron Star Crusts, Astrophysical Journal, 796, 94, 2014,https://doi.org/10.1088/0004-637X/796/2/94
  79. R. E. Navarro, J. Araneda, V. Munoz, P. S. Moya, A. F.-Vinas, J. A. Valdivia, Theory of Electromagnetic Fluctuations for Magnetized Multi-Species Plasmas, Physics of Plasmas, 21, 092902, 2014,https://doi.org/10.1063/1.4894700
  80. R. A. Lopez, P. S. Moya, V. Munoz, A. F. Vinas, J. A. Valdivia, Kinetic transverse dispersion relation for relativistic magnetized electron-positron plasmas with Maxwell-Juttner velocity distribution functions, Physics of Plasmas, 21, 092107, 2014,https://doi.org/10.1063/1.4894679
  81. M. Domiguez, V. Munoz, J. A. Valdivia, Temporal Evolution of Fractality in the Earth’s Magnetosphere and the Solar Photosphere, Journal of Geophysical Research, 119, 3585–3603, 2014,https://doi.org/10.1002/2013JA019433
  82. J. Villalobos, , V. Munoz, J. Rogan, R. Zarama, N. F. Johnson, B. Toledo, J. A. Valdivia, Regular transport dynamics produce chaotic travel times, Physical Review E, 89, 062922, 2014,https://doi.org/10.1103/PhysRevE.89.062922
  83. R. Navarro, P. S. Moya, V. Munoz, J. A. Araneda, A. F. Vinas, J. A. Valdivia, Solar Wind Thermal Induced Magnetic Fluctuations, Physical Review Letters, 112, 245001, 2014,https://doi.org/10.1103/PhysRevLett.112.245001
  84. R. A. Lopez, V. Munoz, A. F. Vinas, J. A. Valdivia, Particle-in-cell simulation for parametric decays of a circularly polarized Alfven wave in relativistic thermal electron-positron plasma, Physics of Plasmas, 21, 032102, 2014,https://doi.org/10.1063/1.4867255
  85. P. S. Moya, R. Navarro, A. F. Vinas, V. Munoz, J. A. Valdivia, Weak turbulence cascading effects in the acceleration and heating of ions in the Solar Wind, Astrophysical Journal, 781, 76, 2014,https://doi.org/10.1088/0004-637X/781/2/76
  86. F. Castillo, B.A. Toledo, V. Muñoz, J. Rogan, R. Zarama, M. Kiwi, J. A. Valdivia, City traffic jam relief by stochastic resonance, Physica A, 403, 65-70, 2014,https://doi.org/10.1016/j.physa.2014.01.068
  87. V. Munoz, F. A. Asenjo, M. Dominguez, R. A. Lopez, J. A. Valdivia, A. Vinas, T. Hada, Large amplitude electromagnetic waves in magnetized relativistic plasmas with temperature, Nonlinear Processes in Geophysics, 21, 217-236, 2014,https://doi.org/10.5194/npg-21-217-2014
  88. J. D. Meisel, O. L. Sarmiento, F. Montes, E. O. Martinez, P. D. Lemoine, J. A. Valdivia, R. C. Brownson, R. Zarama, Network analysis of Bogotá’s Ciclovía Recreativa, a self-organized multisectorial community program to promote physical activity in a middle-income country, American Journal of Health Promotion, 28, e127-e136, 2014,https://doi.org/10.4278/ajhp.120912-QUAN-443
  89. J. Rogan, A. Varas, J. A. Valdivia, M. Kiwi, A strategy to find minimal energy nanocluster structures, Journal of Computational Chemistry, 34, 2548–2556, 2013,https://doi.org/10.1002/jcc.23419
  90. R. A. Lopez, F. A. Asenjo, V. Munoz, A. C.-L. Chian, J. A. Valdivia, Self-modulation of nonlinear Alfven waves in a strongly magnetized relativistic electron-positron plasma, Physical Review E, 88, 023105, 2013,https://doi.org/10.1103/PhysRevE.88.023105
  91. F. Munoz, J. Rogan, J. A. Valdivia, A. Varas, M. Kiwi, Binary cluster collision dynamics and minimum energy conformations, Physica B - Condensed Matter, 427, 76-84, 2013,https://doi.org/10.1016/j.physb.2013.06.036
  92. K.N. Gourgouliatos, A. Cumming, A. Reisenegger, C. Armaza, M. Lyutikov, J. A. Valdivia, Hall equilibria with toroidal and poloidal fields: application to neutron stars, Monthly Notices of the Royal Astronomical Society, 434, 2480-2490, 2013,https://doi.org/10.1093/mnras/stt1195
  93. P. S. Moya, R. Navarro, V. Muñoz, J. A. Valdivia, Comment on ``Sensitive test for ion-cyclotron resonant heating in the solar wind”, Physical Review Letters, 111, 029001, 2013,https://doi.org/10.1103/PhysRevLett.111.029001
  94. B. A. Toledo, A. C.-L. Chian, E. L. Rempel, R. A. Miranda, P. R. Munoz, J. A. Valdivia, Wavelet-based multifractal analysis of nonlinear time-series: the earthquake-driven tsunami of 27 February 2010 in Chile, Physical Review E, 87, 022821, 2013,https://doi.org/10.1103/PhysRevE.87.022821
  95. F. Muñoz, C. Cardenas, J. Rogan, J. A. Valdivia, P. Fuentealba, M. Kiwi, Ab-initio molecular dynamics simulations of Ti2 on C20 collisions and C20Ti2 configurations, Journal of Physical Chemistry C, 117, 4287-4291, 2013 ,https://doi.org/10.1021/jp3120786
  96. B . A. Toledo, M. A. F. San Juan, V. Munoz, J. Rogan, J. A. Valdivia, Non-smooth transitions in a simple city traffic model analyzed through supertracks, Communications in Nonlinear Science and Numerical Simulation, 18, 81-88, 2013,https://doi.org/10.1016/j.cnsns.2012.06.007
  97. J.A. Valdivia, J. Rogan, V. Munoz, B. A. Toledo, M. Stepanova, The magnetosphere as a complex system, Advances in Space Research, 51, 1934-1941, 2013,https://doi.org/10.1016/j.asr.2012.04.004
  98. T. P. Chagas, B. A. Toledo, E. L. Rempel, A. C.-L. Chian, J. A. Valdivia, Optimal feedback control of the forced van der Pol system, Chaos Solitons and Fractals, 45, 1147-1156, 2012,https://doi.org/10.1016/j.chaos.2012.06.004
  99. P. S. Moya, A. F. Vinas, V. Munoz, J. A. Valdivia, Computational and Theoretical study of the wave-particle interaction of proton and waves, Annales Geophysicae, 30, 1361-1369, 2012,https://doi.org/10.5194/angeo-30-1361-2012
  100. R. Lopez, V. Munoz, F. Asenjo, J. A. Valdivia, Parametric decay in relativistic magnetized electron-positron plasmas with relativistic temperatures, Physics of Plasmas, 19, 082104, 2012,https://doi.org/10.1063/1.4742315
  101. D. Pasten, V. Munoz, B. Toledo, J. Villalobos, R. Zarama, J. Rogan, J. A. Valdivia, Universal behavior in a model of city traffic with unequal green/red time, Physica A, 391, 5230–5243, 2012,https://doi.org/10.1016/j.physa.2012.06.005
  102. M. Kiwi, F. Munoz, G. Garcia, R Ramirez, J. Rogan, J. A. Valdivia, Nanocluster collisions as a way to understand the role of d-shell polarization, Journal of Superconductivity and Novel Magnetism, 25, 2205-2212, 2012,https://doi.org/10.1007/s10948-012-1663-5
  103. M. Dominguez, V. Munoz, J. A. Valdivia, Thermal Effects on the Propagation of Large Amplitude Electromagnetic Waves in Magnetized Relativistic Electron-Positron Plasma, Physical Review E, 85, 056416, 2012,https://doi.org/10.1103/PhysRevE.85.056416
  104. V. Bucheli, A. Diaz, J. P. Calderon, P. Lemoine, J. A. Valdivia, J. L. Villaveces, R. Zarama, Growth of scientific production in Colombian Universities: An intellectual capital-based approach, Scientometrics, 91, 396, 2012,https://doi.org/10.1007/s11192-012-0627-7
  105. F. Asenjo, F. Borotto, A.C.L. Chian, V. Munoz, J. A. Valdivia, E. Rempel, Self-modulation of nonlinear waves in a weakly magnetized relativistic electron-positron plasma with temperature, Physical Review E, 85, 046406, 2012,https://doi.org/10.1103/PhysRevE.85.046406
  106. F. Montes, O. L. Sarmiento, R. Zarama, M. Pratt, G. Wang, E. Jacoby, T. Schmid, M. Ramos, O. Ruiz, O. Vargas, G. Michel, S. Zieff, J. A. Valdivia, N. Cavill, S. Kahlmeier. Do health benefits outweigh the costs of mass recreational programs?: An economic analysis of four Ciclovía programs, Journal of Urban Health, 89, 153-170, 2011,https://doi.org/10.1007/s11524-011-9628-8
  107. F. Asenjo, V. Munoz, J. A. Valdivia, S. H. Mahajan, A Hydrodynamical model for Relativistic Spin Quantum Plasmas, Physics of Plasmas, 18, 012107, 2011,https://doi.org/10.1063/1.3533448
  108. F. Munoz, J. Rogan, G. Garcia, M. Ramirez, J. A. Valdivia, R. Ramirez, M. Kiwi, Collisions between a single gold atom and a 13 atom gold clusters: an ab initio approach, European Physical Journal D, 61, 87-93, 2011,https://doi.org/10.1140/epjd/e2010-10195-x
  109. V. Pinto, M. Stepanova, E. E. Antonova, J. A. Valdivia, Estimation of the eddy-diffusion coefficients in the plasma sheet using THEMIS satellite data, Journal of Atmospheric and Solar-Terrestrial Physics, 73, 1472-1477, 2011,https://doi.org/10.1016/j.jastp.2011.05.007
  110. D. Pasten, V. Muñoz, A. Cisternas, J. Rogan, J. A. Valdivia, Monofractal and multifractal analysis of the spatial distribution of earthquakes in the central zone of Chile, Physical Review E, 84, 066123, 2011,https://doi.org/10.1103/PhysRevE.84.066123
  111. M. Stepanova, V. Pinto, J. A. Valdivia, E. Antonova, Spatial distribution of the eddy diffusion coefficients in the plasma sheet during quiet time and substorms from THEMIS satellite data, Journal of Geophysical Research, 116, A00I24, 2011,https://doi.org/10.1029/2010JA015887
  112. P. Moya, V. Munoz. J. Rogan, J. A. Valdivia, Study of the Cascading Effect During the Acceleration and Heating of Ions in the Solar Wind, Journal of Atmospheric and Solar-Terrestrial Physics, 73, 1390-1397, 2011,https://doi.org/10.1016/j.jastp.2011.01.009
  113. R. Gonzalez, G. Garcia, R. Ramirez, M. Kiwi, J. A. Valdivia, T. Rahman, Temperature dependent properties of 147 and 309 atom iron-gold nanoclusters, Physical Review B, 83, 155425, 2011,https://doi.org/10.1103/PhysRevB.83.155425
  114. F. Muñoz, Jose Rogan, G. Garcia, J. A. Valdivia, R. Ramirez, M. Kiwi, The role of d-orbital polarization on Rhodium cluster collisions, European Physical Journal D, 64, 45-51, 2011,https://doi.org/10.1140/epjd/e2011-20052-1
  115. J. Hoyos, A. Reisenegger, J. A. Valdivia, Asymptotic, non-linear solutions for ambipolar diffusion in one dimension, Monthly Notices of the Royal Astronomical Society, 408, 1730-1741, 2010,https://doi.org/10.1111/j.1365-2966.2010.17237.x
  116. F. A. Asenjo, V. Munoz, J. A. Valdivia, Relativistic mass and charge of photons in thermal plasmas through electromagnetic field quantization, Physical Review E, 81, 056405, 2010,https://doi.org/10.1103/PhysRevE.81.056405
  117. N. L. Lammoglia, C. Olaya, J. Villalobos, J. P. Calderón, J. A. Valdivia, R. Zarama, Heuristic-based management (I): variation, Kybernetes, 39, 1513-1528, 2010,https://doi.org/10.1108/03684921011081141
  118. J. Villalobos, B. A. Toledo, D. Pasten, V. Munoz, J. Rogan, R. Zarama, N. Lammoglia, J. A. Valdivia, Characterization of the nontrivial and chaotic behavior that occurs in a simple city traffic model, Chaos, 20, 013109, 2010,https://doi.org/10.1063/1.3308597
  119. A. C.-L. Chian, M. Han, R. A. Miranda, C. Shu, J. A. Valdivia, The planetary-exoplanetary environment: a nonlinear perspective, Advances in Space Research, 46, 472-484, 2010,https://doi.org/10.1016/j.asr.2009.07.031
  120. A. Varas, M. D. Cornejo, B. A. Toledo, V. Munoz, J. Rogan, R. Zarama, J. A. Valdivia, Resonance, criticality and emergence in city traffic investigated in cellular automaton models, Physical Review E, 80, 056108, 2009,https://doi.org/10.1103/PhysRevE.75.026108
  121. J. Rogan, M. Ramirez, V. Munoz, J. A. Valdivia, G. Garcia, R. Ramirez, M. Kiwi, Diversity driven unbiased search of minimum energy cluster configurations, Journal of Physics: Condensed Matter, 21, 084209, 2009,https://doi.org/10.1088/0953-8984/21/8/084209
  122. F. Asenjo, V. Munoz, J. A. Valdivia, T. Hada, Circularly polarized wave propagation in magnetofluid dynamics for relativistic electro-positron plasmas, Physics of Plasmas, 16, 122108, 2009,https://doi.org/10.1063/1.3272667
  123. N. Lammoglia, V. Munoz, J. Rogan, B. Toledo, R. Zarama, J. A. Valdivia, Quantitative description of wealth distributions by kinetic trading models, Physical Review E, 78, 047103, 2008,https://doi.org/10.1063/1.3272667
  124. J. Hoyos A. Reisenegger, J. A. Valdivia, Magnetic Field Evolution in Neutron Stars: One-Dimensional Multi-Fluid Model, Astronomy and Astrophysics, 287, 789-803, 2008,https://doi.org/10.1051/0004-6361:200809466
  125. F. Asenjo, B. A. Toledo, V. Munoz, J. Rogan, J. A. Valdivia, Optimal Control in a Noisy System, Chaos, 18, 033106, 2008,https://doi.org/10.1063/1.2956981
  126. J. Rogan, G. Garcia, M. Ramirez, V. Munoz, J. A. Valdivia, X. Andrade, R. Ramirez, M. Kiwi, Structure and Properties of small Pd Clusters, Nanotechnology, 19, 205701, 2008,https://doi.org/10.1088/0957-4484/19/20/205701
  127. R. Zarama, A. Reyes, E. Aldana, J. Villalobos, J. C. Bohorquez, J. P. Calderon, A. Botero, N. Lammoglia, J. L. Villaveces, L. Pinzon, R. Bonilla, A. Mejia, J. Bermeo, I. Dyner, N. Johnson, J. A. Valdivia, Rethinking research management in Colombia, Kybernetes, 36, 364, 2007,https://doi.org/10.1108/03684920710747011
  128. B. A. Toledo, E. A. Cerda, J. Rogan, C. F. Tenreiro, R. Zarama, J. A. Valdivia, Universal and nonuniversal features in a model of city traffic, Physical Review E, 75, 026108, 2007,https://doi.org/10.1103/PhysRevE.75.026108
  129. L. Wastavino, B. A. Toledo, et al., 2008 J. Rogan, R. Zarama, V. Munoz, J. A. Valdivia, Modeling traffic on crossroads, Physica A, 381, 411, 2007,https://doi.org/10.1016/j.physa.2007.03.052
  130. A. Varas, M.D. Cornejo, D. Mainemer, B. Toledo, J. Rogan, V. Munoz, J. A. Valdivia, Cellular automaton model for evacuation process with obstacles, Physica A, 382, 631-642, 2007,https://doi.org/10.1016/j.physa.2007.04.006
  131. J. A. Valdivia, J. Rogan, V. Munoz, B. Toledo, Hysteresis provides self-organization in a plasma model, Space Science Reviews, 122, 313, 2006,https://doi.org/10.1007/s11214-006-7846-2
  132. J.A. Valdivia, J. Rogan, V. Munoz, L. Gomberoff, A. Klimas, D. Vassiliadis, V.Uritsky, S. Sharma, B. Toledo, L. Wastavino, The Magnetosphere as a Complex System, Advances in Space Research, 35, 961-971, 2005,https://doi.org/10.1016/j.asr.2005.03.144
  133. J. Rogan, G. Garcia, J. A. Valdivia, W. Orellana, A. H. Romero, R. Ramirez, M. Kiwi, Small Pd clusters: a comparison of phenomenological and ab-initio approaches, Physical Review B, 72, 115421, 2005,https://doi.org/10.1103/PhysRevB.72.115421
  134. L. Gomberoff, V. Muñoz, J. A. Valdivia, Ion cyclotron instability triggered by drifting minor ion species: cascade effect and exact results, Planetary and Space Science, 52, 679, 2004,https://doi.org/10.1016/j.pss.2004.01.004
  135. B. Toledo, V. Muñoz, J. Rogan, C. Tenreiro, J. A. Valdivia, Modeling traffic through a sequence of traffic lights, Physical Review E, 70, 016107, 2004,https://doi.org/10.1103/PhysRevE.70.016107
  136. L. Gomberoff, J. A. Valdivia, Ion cyclotron instability due to the thermal anisotropy of drifting ion species, Journal of Geophysical Research, 108, 1050, 2003,https://doi.org/10.1029/2002JA009576
  137. J. A. Valdivia, Comment on “Imaging of elves, halos and sprite initiation at 1 ms time resolution, Journal of Atmospheric and Solar-Terrestrial Physics, 65, 519, 2003,https://doi.org/10.1016/S1364-6826
  138. J. A. Valdivia, Lightning induced optical emissions in the ionosphere, Space Science Reviews, 107, 273, 2003,https://doi.org/10.1023/A:1025596311682
  139. J. A. Valdivia, A. Klimas, D. Vassiliadis, V. Uritsky, J. Takalo, Self-organization in a current sheet model, Space Science Reviews, 107, 515, 2003,https://doi.org/10.1023/A:1025518527128
  140. L. Gomberoff, J. A. Valdivia, Proton-cyclotron instability induced by the thermal anisotropy of minor ions, Journal of Geophysical Research, 107, 1494, 2002,https://doi.org/10.1029/2002JA009357
  141. J. Takalo, J. Timonen, A. Klimas, J. A. Valdivia, D. Vassiliadis, A coupled map as a model of the dynamics of the magnetotail current sheet, Journal of Atmospheric and Solar-Terrestrial Physics, 63, 1407, 2001,https://doi.org/10.1016/S1364-6826
  142. V. M. Uritsky, A. J. Klimas, J. A. Valdivia, D. Vassiliadis, D. N. Baker, Stable critical behavior and fast field annihilation in a magnetic field reversal model, Journal of Atmospheric and Solar-Terrestrial Physics, 63, 1425, 2001,https://doi.org/10.1016/S1364-6826
  143. G. Rostoker, J. A. Valdivia, D. Vassiliadis, D. N. Baker, A. J. Klimas, The nonlinear dynamics of space weather, Advances in Space Research, 26, 197-207, 2000,https://doi.org/10.1016/S0273-1177
  144. M. I. Sitnov, A. S. Sharma, and K. Papadopoulos, D. Vassiliadis, J. A. Valdivia, A. J. Klimas, D. Baker, Phase transition-like behavior of the magnetosphere during substorms, Journal of Geophysical Research, 105, 12955, 2000,https://doi.org/10.1029 / 1999JA000279
  145. A. Klimas, J. A. Valdivia, D. Vassiliadis, D. Baker, M. Hesse, J. Takalo, Self-organized Criticality in the Substorm Phenomenon and its Relation to Localized Reconnection in the Magnetospheric Plasma Sheet, Journal of Geophysical Research, 105, 18765, 2000,https://doi.org/10.1029/1999JA000319
  146. J. A. Valdivia, G. Milikh, Reply to comments on " Model of Red Sprites due to Intracloud Fractal Lightning Discharges", Radio Science, 35, 1045, 2000,https://doi.org/10.1029/1999RS002256
  147. A. Klimas, D. Vassiliadis, D. N. Baker, J. A. Valdivia, Data-derived analogues of the solar wind-magnetosphere interaction, Physics and Chemistry of the Earth, 24, 37, 1999,https://doi.org/10.1016/S1464-1917
  148. G. Milikh, J. A. Valdivia, Model of gamma ray flashes due to fractal lightning, Geophysical Research Letters, 26, 525, 1999,https://doi.org/10.1029/1999GL900001
  149. J. A. Valdivia, D. Vassiliadis, A. Klimas, A. S. Sharma and K. Papadopoulos, Spatiotemporal activity of magnetic storms, Journal of Geophysical Research, 104, 12239, 1999,https://doi.org/10.1029/1999JA900152
  150. J. Takalo, J. Timonen, A. Klimas, J. A. Valdivia, D. Vassiliadis, Nonlinear energy dissipation in a cellular automaton magnetotail field model, Geophysical Research Letters, 26, 1813, 1999,https://doi.org/10.1029/1999GL900429
  151. R. R. Rosa, A. S. Sharma, J. A. Valdivia, Characterization of Asymmetric Fragmentation Patterns in Spatially Extended Systems, International Journal of Modern Physics C, 10, 147, 1999,https://doi.org/10.1142/S0129183199000103
  152. J. Takalo, J. Timonen, A. Klimas, J. A. Valdivia, D. Vassiliadis, A coupled map model for the magnetotail current sheet, Geophysical Research Letters, 26, 2913, 1999,https://doi.org/10.1029/1999GL003616
  153. J. A. Valdivia, D. Vassiliadis, A. Klimas, Modeling the spatial structure of the high latitude magnetic perturbation and the related current system, Physics of Plasmas, 6, 4185, 1999,https://doi.org/10.1063/1.873684
  154. D. Vassiliadis, A. J. Klimas, J. A. Valdivia, D. N. Baker, The Dst geomagnetic response as a function of storm phase and amplitude and the solar wind electric field, Journal of Geophysical Research, 104, 24957, 1999,https://doi.org/10.1029/1999JA900185
  155. R. R. Rosa, A. S. Sharma, J. A. Valdivia, Characterization of Localized Turbulence in Plasma Extended Systems, Physica A, 257, 509, 1998,https://doi.org/10.1016/S0378-4371
  156. G. Milikh, J. A. Valdivia, K. Papadopoulos, Spectrum of Red Sprites, Journal of Atmospheric and Solar-Terrestrial Physics, 60, 907, 1998,https://doi.org/10.1016/S1364-6826
  157. G. Milikh, D.A. Usikov, J. A. Valdivia, Model of Infrared Emissions from Sprites, Journal of Atmospheric and Solar-Terrestrial Physics, 60, 895, 1998,https://doi.org/10.1016/S1364-6826
  158. J. A. Valdivia, G. M. Milikh, K. Papadopoulos, Model of Red Sprites due to Intracloud Fractal Lightning Discharges, Radio Science, 33, 1655, 1998,https://doi.org/10.1029/98RS02201
  159. J. A. Valdivia, K. Papadopoulos, G. Milikh, Red Sprites: Lightning as a Fractal Antenna, Geophysical Research Letters, 24, 3169, 1997,https://doi.org/10.1029/97GL03188
  160. G. Milikh, J. A. Valdivia, K. Papadopoulos, Model of Red Sprite Optical Spectra, Geophysical Research Letters, 24, 833, 1997,https://doi.org/10.1029/97GL00759
  161. D. L. David, J. A. Valdivia, Viscous Drag and the Differential Rotation of the Earth’s Core, Journal of Plasma Physics, 57, 231, 1997,https://doi.org/10.1017/S002237789600534X
  162. A. Gurevich, G. Milikh, J. A. Valdivia, Model of X-ray emission and fast preconditioning during a thunderstorm, Physics Letters A, 231, 402, 1997,https://doi.org/10.1016/S0375-9601
  163. K. Papadopoulos, J. A. Valdivia, Comment on High Altitude Discharges and Gamma-Ray Flashes: A manifestation of Runaway Breakdown by Yuri Taranenko and Robert Roussel-Dupré, Geophysical Research Letters, 24, 2643, 1997,https://doi.org/10.1029/97GL02687
  164. R. Rosa, S. Sawant, J. A. Valdivia, A. S. Sharma, Dissipative Structures and Weak Turbulence in the Solar Corona, Advances in Space Research, 20, 2303, 1997,https://doi.org/10.1016/S0273-1177
  165. A. Fouladi, J. A. Valdivia, Period Control of Chaotic Systems by optimization, Physical Review E, 55, 1315, 1997,https://doi.org/10.1103/PhysRevE.55.1315
  166. J. A. Valdivia, A. S. Sharma, K. Papadopoulos, Prediction of Magnetic Storms by Nonlinear Dynamical Models, Geophysical Research Letters, 23, 2899, 1996,https://doi.org/10.1029/96GL02828
  167. K. Papadopoulos, G. Milikh, J. A. Valdivia, Comment on Can Gamma Radiation be Produced in the Electrical Environment above thunderstorms, Geophysical Research Letters, 23, 2283, 1996,https://doi.org/10.1029/96GL00770
  168. A. Gurevich, J. A. Valdivia, G. Milikh, K. Papadopoulos, Runaway electrons in the Atmosphere in the Presence of a Magnetic Field, Radio Science, 31, 1541, 1996,https://doi.org/10.1029/96RS02441
  169. K. Papadopoulos, A. S. Sharma, J. A. Valdivia, Is the Magnetosphere a Lens for MHD Waves?, Geophysical Research Letters, 20, 2809, 1993,https://doi.org/10.1029/93GL03011