Bi-dimensional crime model based on anomalous diffusion with law enforcement effect

Authors

  • Francisco Javier Martínez-Farías Escuela Superior de Apan, Universidad Autonoma del Estado de Hidalgo, Carretera Apan-Calpulalpan Km 8, Col. Chimalpa, C.P 43920, Apan, Hidalgo, Mèxico https://orcid.org/0000-0002-1853-5981
  • Anahí Alvarado-Sánchez Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apdo. Postal 70-543, 04510, Cd.Mx., México https://orcid.org/0000-0001-7736-1056
  • Eduardo Rangel-Cortes Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan Km 8, Col. Chimalpa, C.P 43920, Apan, Hidalgo, México https://orcid.org/0000-0003-4604-6066
  • Arturo Hernández-Hernández Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan Km 8, Col. Chimalpa, C.P 43920, Apan, Hidalgo, México https://orcid.org/0000-0001-5617-0808

DOI:

https://doi.org/10.53391/mmnsa.2022.01.003

Keywords:

Residential burglary, Lévy flights, Fractional operator, Anomalous diffusion, Hotspots, Law enforcement

Abstract

Several models based on discrete and continuous fields have been proposed to comprehend residential criminal dynamics. This study introduces a two-dimensional model to describe residential burglaries diffusion, employing Lèvy flights dynamics. A continuous model is presented, introducing bidimensional fractional operator diffusion and its differences with the 1-dimensional case. Our results show, graphically, the hotspot's existence solution in a 2-dimensional attractiveness field, even fractional derivative order is modified. We also provide qualitative evidence that steady-state approximation in one dimension by series expansion is insufficient to capture similar original system behavior. At least for the case where series coefficients have a linear relationship with derivative order. Our results show, graphically, the hotspot's existence solution in a 2-dimensional attractiveness field, even if fractional derivative order is modified. Two dynamic regimes emerge in maximum and total attractiveness magnitude as a result of fractional derivative changes, these regimes can be understood as considerations about different urban environments. Finally, we add a Law enforcement component, embodying the "Cops on dots" strategy; in the Laplacian diffusion dynamic, global attractiveness levels are significantly reduced by Cops on dots policy but lose efficacy in Lèvy flight-based diffusion regimen. The four-step Preditor-Corrector method is used for numerical integration, and the fractional operator is approximated, getting the advantage of the spectral methods to approximate spatial derivatives in two dimensions.

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Published

2022-01-27
CITATION METRICS
DOI: 10.53391/mmnsa.2022.01.003

How to Cite

Martínez-Farías, F. J., Alvarado-Sánchez, A., Rangel-Cortes, E., & Hernández-Hernández, A. (2022). Bi-dimensional crime model based on anomalous diffusion with law enforcement effect. Mathematical Modelling and Numerical Simulation With Applications, 2(1), 26–40. https://doi.org/10.53391/mmnsa.2022.01.003

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Research Articles