Academic Work

• ORCID
• Google scholar
• ResearchGate
• Scopus

Research interests

• Time series analysis of complex systems
• Information and entropy theory
• Complexity measures in natural time domain
• Seismic dynamics study of subduction zones in Mexico
• Experimental development of synthetic seismicity

Profile

Professor Alejandro Ramirez Rojas did his undergraduate studies at the Faculty of Sciences of the Universidad Nacional Autónoma de México (UNAM), obtained his master's degree in Physics at the School of Physics and Mathematics of the Instituto Politécnico Nacional (IPN) and obtained his doctorate at the Faculty of Sciences of the Autonomous University of the State of Mexico with a specialty in Nonlinear Physics and time analysis of complex systems.

Since 1985, he has been a professor and researcher at the Universidad Autónoma Metropolitana (UAM) in Mexico City, attached to the Research Area of Physics of Irreversible Processes of the Department of Basic Sciences. He teaches physics and mathematics courses in engineering and graduate courses. He has been a thesis advisor at the undergraduate and Ph.D. levels and collaboration with a postdoctoral fellow.

He has made short stays at the International Center for Theoretical Physics (ICTP) in Trieste Italy and during the last 6 years at the Istituto di Metodology per l'Analisi Ambientale-Consiglio Nazionale delle Rcherche (IMAA-CNR) in Italy.

His field of research is nonlinear dynamics applied to various physical problems with emphasis on time series analysis for the study of complex systems such as tectonic dynamics in subduction zones, as well as experimental in the analysis of synthetic seismicity.

He has participated in publications focused on soft matter issues. So far, he has published about 40 articles in indexed journals and about ten as first author, five book chapters, and one scientific book. He has been responsible for theoretical and experimental projects at the University and also for bilateral projects with CNR of Italy. He has participated as a referee for indexed scientific journals such as Entropy, EPL, Physyca A, NHESS, Pure and Applied Geophysics, among others. He is a member of the national system of researchers of CONACyT (Level II) in Mexico, a regular member of the Mexican Academy of Sciences and the European Geosciences Union (EGU).

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Research interests

Academic Work

On the following pages you can consult the research work:

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• Scopus

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Some examples of publications

Select the bibliographic reference to consult each publication:

Open Access	References	UN SDGs
OA	Varotsos, P.A., Sarlis, N.V., Skordas, E.S. and 5 more (...) (2023).Improving the Estimation of the Occurrence Time of an Impending Major Earthquake Using the Entropy Change of Seismicity in Natural Time Analysis. Geosciences (Switzerland),13(8)	\| 11 \|
	Sigalotti, L.D.G., Peregrino, F.C., Ramírez-Rojas, A. (2023).Air Turbulence and its Methods of Detection. Air Turbulence and its Methods of Detection,1-416
OA	Ramírez-Rojas, A., Flores-Márquez, E.L., Vargas, C.A. (2023).Visibility Graph Analysis of the Seismic Activity of Three Areas of the Cocos Plate Mexican Subduction Where the Last Three Large Earthquakes (M > 7) Occurred in 2017 and 2022. Entropy,25(5)
OA	Sigalotti, L.D.G., Ramírez-Rojas, A., Vargas, C.A. (2023).Tsallis q-Statistics in Seismology. Entropy,25(3)
OA	Ramírez-Rojas, A., Flores-Márquez, E.L. (2022).Nonlinear Statistical Features of the Seismicity in the Subduction Zone of Tehuantepec Isthmus, Southern México. Entropy,24(4)
OA	Ramírez-Rojas, A., Cárdenas-Moreno, P.R., Vargas, C.A. (2022).Mutual information analysis between NO2and O3pollutants measured in Mexico City before and during 2020 Covid-19 pandemic year. Journal of Physics: Conference Series,2307(1)	\| 11 \|
OA	Ramírez Rojas, A., Flores Márquez, E.L. (2022).Multifractal features of the seismicity in Tehuantepec Isthmus, southern México. Journal of Physics: Conference Series,2307(1)
	Cárdenas-Moreno, P.R., Moreno-Torres, L.R., Lovallo, M. and 2 more (...) (2021).Spectral, multifractal and informational analysis of PM10 time series measured in Mexico City Metropolitan Area. Physica A: Statistical Mechanics and its Applications,565	\| 11 \|
OA	Flores-Márquez, E.L., Ramírez-Rojas, A., Perez-Oregon, J. and 3 more (...) (2020).Natural time analysis of seismicity within the mexican flat slab before the M7.1 earthquake on 19 september 2017. Entropy,22(7)	\| 11 \|
	Sarlis, N.V., Skordas, E.S., Varotsos, P.A. and 2 more (...) (2019).Investigation of the temporal correlations between earthquake magnitudes before the Mexico M8.2 earthquake on 7 September 2017. Physica A: Statistical Mechanics and its Applications,517475-483
OA	Sarlis, N.V., Skordas, E.S., Varotsos, P.A. and 2 more (...) (2019).Identifying the occurrence time of the deadly Mexico M8.2 earthquake on 7 September 2017. Entropy,21(3)
	Ramírez-Rojas, A., Sigalotti, L.D.G., Márquez, E.L.F. and 1 more (...) (2019).Time Series Analysis in Seismology: Practical Applications. Time Series Analysis in Seismology: Practical Applications,1-375
OA	Ramírez-Rojas, A., Flores-Márquez, E.L., Sarlis, N.V. and 1 more (...) (2018).The complexity measures associated with the fluctuations of the entropy in natural time before the Deadly México M8.2 Earthquake on 7 September 2017. Entropy,20(6)
	Telesca, L., Flores-Márquez, E.L., Ramírez-Rojas, A. (2018).Time-reversibility in seismic sequences: Application to the seismicity of Mexican subduction zone. Physica A: Statistical Mechanics and its Applications,4921373-1381
	Sarlis, N.V., Skordas, E.S., Varotsos, P.A. and 2 more (...) (2018).Natural time analysis: On the deadly Mexico M8.2 earthquake on 7 September 2017. Physica A: Statistical Mechanics and its Applications,506625-634
	Telesca, L., Haro-Pérez, C., Moreno-Torres, L.R. and 1 more (...) (2018).Multifractal detrended fluctuation analysis of intensity time series of photons scattered by tracer particles within a polymeric gel. Physica A: Statistical Mechanics and its Applications,490994-1003
	Moreno-Torres, L.R., Gomez-Vieyra, A., Lovallo, M. and 2 more (...) (2018).Investigating the interaction between rough surfaces by using the Fisher–Shannon method: Implications on interaction between tectonic plates. Physica A: Statistical Mechanics and its Applications,506560-565
	Páez-Hernández, R.T., Portillo-Díaz, P., Ladino-Luna, D. and 2 more (...) (2016).An analytical study of the endoreversible Curzon-Ahlborn cycle for a non-linear heat transfer law. Journal of Non-Equilibrium Thermodynamics,41(1) 19-27	\| 7 \|
	Haro-Pérez, C., Lovallo, M., Moreno-Torres, L.R. and 4 more (...) (2016).Investigating the time dynamics of photon sequences scattered by tracer particles immersed in a polymeric gel. EPL,115(4)
	Vargas, C.A., Flores-Márquez, E.L., Ramírez-Rojas, A. and 1 more (...) (2015).Analysis of natural time domain entropy fluctuations of synthetic seismicity generated by a simple stick-slip system with asperities. Physica A: Statistical Mechanics and its Applications,41923-28
	Ramirez-Rojas, A., Moreno Torres, L.R., Paez-Hernandez, R. (2015).Multifractal analysis of seismic geoelectric signals observed prior a earthquake of M6.7. Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015,1098-1103
	Paez-Hernandez, R., Zamora-Gomez, M., Ramirez-Rojas, A. and 1 more (...) (2015).Electromagnetic field produced by a cell phone. Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015,1108-1111
	Flores-Márquez, E.L., Ramírez-Rojas, A., Telesca, L. (2015).Multifractal detrended fluctuation analysis of earthquake magnitude series of Mexican South Pacific Region. Applied Mathematics and Computation,2651106-1114
	Flores-Márquez, E.L., Vargas, C.A., Telesca, L. and 1 more (...) (2014).Analysis of the distribution of the order parameter of synthetic seismicity generated by a simple spring-block system with asperities. Physica A: Statistical Mechanics and its Applications,393508-512
OA	Telesca, L., Lovallo, M., Ramirez-Rojas, A. and 1 more (...) (2014).Relationship between the frequency magnitude distribution and the visibility graph in the synthetic seismicity generated by a simple stick-slip system with asperities. PLoS ONE,9(8)
	Telesca, L., Lovallo, M., Ramirez-Rojas, A. and 1 more (...) (2013).Investigating the time dynamics of seismicity by using the visibility graph approach: Application to seismicity of Mexican subduction zone. Physica A: Statistical Mechanics and its Applications,392(24) 6571-6577
	Ramírez-Rojas, A., Flores-Márquez, E.L. (2013).Order parameter analysis of seismicity of the Mexican Pacific coast. Physica A: Statistical Mechanics and its Applications,392(10) 2507-2512

Courses offered

*Courses are conducted in spanish

Num.	Trim.	Course Name	Level
1	23O	Calculo Integral	Licenciatura
2	23O	Matemáticas Aplicadas a las Ciencias e Ingeniería de Materiales	Posgrado
3	23P	Mecánica Estadística	Licenciatura
4	23P	Física Cuántica	Posgrado
5	23I	Mecánica Estadística	Licenciatura
6	23I	Propiedades Eléctricas, Magnéticas y Ópticas de los Materiales	Posgrado
7	22O	Funciones Especiales	Licenciatura
8	22O	Fundamentos de Física de Materiales	Posgrado
9	22P	Funciones Especiales	Licenciatura
10	22P	Calculo de Varias Variables	Licenciatura
11	22I	Funciones Especiales	Licenciatura
12	22I	Termodinámica	Licenciatura
13	21O	Funciones Especiales	Licenciatura
14	21O	Dinámica Aplicada	Licenciatura
15	21O	Mecánica Estadística	Licenciatura
16	21P	Ecuaciones Diferenciales Ordinarias	Licenciatura
17	21P	Dinámica Aplicada	Licenciatura
18	21I	Dinámica Aplicada	Licenciatura
19	21I	Física Moderna	Licenciatura
20	21I	Física Cuántica	Posgrado
21	20O	Mecánica Estadística	Licenciatura
22	20O	Matemáticas Aplicadas a las Ciencias e Ingeniería de Materiales	Posgrado
23	20P	Introducción al Cálculo	Licenciatura
24	20P	Cálculo Diferencial	Licenciatura
25	20I	Introducción al Calculo	Licenciatura
26	20I	Ecuaciones Diferenciales Ordinarias	Licenciatura
27	20I	Física Cuántica	Posgrado

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