Complex Systems

Analogies between the cracking noise of ethanol-dampened charcoal and earthquakes
We report on an extensive characterization of the cracking noise produced by charcoal samples when dampened with ethanol. We argue that …
Haroldo V. Ribeiro, Leandro S. Costa, Luiz G. A. Alves, Perseu A. Santoro, Sérgio Picoli, Ervin K. Lenzi, Rrenio S. Mendes
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Analogies between the cracking noise of ethanol-dampened charcoal and earthquakes
Len Fisher: Woodquakes and earthquakes
Two upcoming papers in Physical Review Letters shed a light on the way that scientists can use analogies to understand fundamental physical processes.
Len Fisher
Jul 1, 2015 2 min read Media coverage
Len Fisher: Woodquakes and earthquakes
Investigating the interplay between mechanisms of anomalous diffusion via fractional Brownian walks on a comb-like structure
The comb model is a simplified description for anomalous diffusion under geometric constraints. It represents particles spreading out …
Haroldo V. Ribeiro, Angel A. Tateishi, Luiz G. A. Alves, Rafael S. Zola, Ervin K Lenzi
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Investigating the interplay between mechanisms of anomalous diffusion via fractional Brownian walks on a comb-like structure
Empirical analysis on the connection between power-law distributions and allometries for urban indicators
We report on the existing connection between power-law distributions and allometries. As it was first reported in [PLoS ONE 7, e40393 …
Luiz G. A. Alves, Haroldo V. Ribeiro, Ervin K. Lenzi, Renio S. Mendes
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Empirical analysis on the connection between power-law distributions and allometries for urban indicators
Long-range spatial correlations and fluctuation statistics of lightning activity rates in Brazil
We report on a statistical analysis of the lightning activity rates in all Brazilian cities. We find out that the average of lightning …
Haroldo V. Ribeiro, Fernando J. Antonio, Luiz G. A. Alves, Ervin K. Lenzi, Renio S. Mendes
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Long-range spatial correlations and fluctuation statistics of lightning activity rates in Brazil
Distance to the scaling law: a useful approach for unveiling relationships between crime and urban metrics
We report on a quantitative analysis of relationships between the number of homicides, population size and other ten urban metrics. By …
Luiz G. A. Alves, Haroldo V. Ribeiro, Ervin K. Lenzi, Renio S. Mendes
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Distance to the scaling law: a useful approach for unveiling relationships between crime and urban metrics
Scaling laws in the dynamics of crime growth rate
The increasing number of crimes in areas with large concentrations of people have made cities one of the main sources of violence. …
Luiz G. A. Alves, Haroldo V. Ribeiro, Renio S. Mendes
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Scaling laws in the dynamics of crime growth rate