Complex Lab
Research group on complex systems at the State University of Maringa
Recent Publications
Causal asymmetry suggests productivity underlies scientific collaboration
Scientific productivity and collaboration are closely related, yet the causal direction between these two dimensions of academic …
Charting the life of Billboard hits through memory, turnover, and predictability
Rankings shape the visibility and success of cultural products, yet their temporal dynamics remain underexplored when comparing …
Gender shapes the relationship between productivity and journal prestige in science
Gender disparities in academia manifest and persist in various aspects of the scientific enterprise, yet their influence on the …
Interpretable liquid crystal phase classification via two-by-two ordinal patterns
Liquid crystal textures encode rich structural information, yet mapping these images to mesophase identity remains challenging because …
Comprehensive indicators and fine granularity refine density scaling laws in rural-urban systems
Density scaling laws complement traditional population scaling laws by enabling the analysis of the full range of human settlements and …
Nonlinear rank scaling and hidden structure in NHS expenditure transparency data
A variety of transparency initiatives have been introduced by governments to reduce corruption and allow citizens to independently …
Evolving spatiotemporal patterns and urban scaling of deaths from external causes
Urban scaling theory posits that urban indicators follow power‐law relations with population, yet the evolution of these patterns - and …
Bipartite structure and dynamics of political corruption networks
Political corruption is inherently an affiliation process linking agents to corruption cases; yet it is often studied via one-mode …
A unified framework for divergences, free energies, and Fokker–Planck equations
Many efforts have been made to explore systems that show significant deviations from predictions related to the standard statistical …
Complexity-entropy analysis of solar photospheric turbulence: Hinode images of magnetic and Poynting fluxes
The spatiotemporal inhomogeneous-homogeneous transition in the dynamics and structures of solar photospheric turbulence is studied by …
News and press coverage
Phys.org: Hit songs fade faster from the Billboard charts than albums
Favorite songs can stay with us for a lifetime, but their shelf life on the music charts is fleetingly short. Tracks that shoot up the U.S. Billboard charts may flood the airwaves for a short while, but just a few weeks later, they have vanished.
StudyFinds: Nearly 70 Years of Billboard Charts Reveal How Quickly Hits Fade
Christmas Songs Keep Coming Back To Billboard Charts, But Most Hits Never Do
In A Nutshell
Two Billboard Hot 100 charts seven weeks apart share only about half the same songs.
Ex-aluno da UEM recebe prêmio de menção honrosa em concurso nacional
As outras quatro Instituições Estaduais de Ensino Superior (IEES) do estado foram reconhecidas com seis menções honrosas, em uma delas, o ex-aluno de doutorado em Física da UEM, Higor Yudi Duenha Sigaki foi agraciado.
A pandemia em dados: a Covid-19 decifrada para a sociedade
Três físicos da UEM fundaram o Observatório COVID-19 Maringá, um site que surgiu da necessidade de registrar e analisar dados sobre a pandemia da Covid-19 na cidade.
Engrenagens do conhecimento
Ao analisar a produção científica ao longo da carreira de mais de 6 mil pesquisadores brasileiros de 14 disciplinas, a equipe do físico Haroldo Ribeiro, da Universidade Estadual de Maringá, no Paraná, identificou padrões distintos de comportamento em relação à publicação de artigos.
People
Faculty
Renio dos Santos Mendes
State University of Maringa
Associate Professor
Complex systems, Anomalous Diffusion, Statistical Physics
Ervin Kaminski Lenzi
State University of Maringa
Associate Professor
Anomalous Diffusion, Fractional Diffusion Equations, Statistical Physics, Complex Systems
Sergio de Picoli Jr.
State University of Maringa
Assistant Professor
Complex Systems, Statistical Physics
Haroldo Valentin Ribeiro
State University of Maringa
Associate Professor
Complex Systems, Statistical Physics, Anomalous Diffusion, Data Analysis
Arthur Augusto Barizon Pessa
State University of Maringa
Assistant Professor
Complex Systems, Complex Networks, Time Series Analysis
Postdoctoral researchers
Gabriel Gomides Piva
State University of Maringa
Postdoctoral researcher
Complex Systems, Data Science, Complex Networks, Scaling Laws, Spatial Modeling
Ph.D. students
Master students
Undergrad students
