Search Results - "Martinez, Alexandre S"

Hamiltonian dynamics of the SIS epidemic model with stochastic fluctuations by Nakamura, Gilberto M., Martinez, Alexandre S.

“…Empirical records of epidemics reveal that fluctuations are important factors for the spread and prevalence of infectious diseases. The exact manner in which…”
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Improved susceptible-infectious-susceptible epidemic equations based on uncertainties and autocorrelation functions by Nakamura, Gilberto M, Cardoso, George C, Martinez, Alexandre S

“…Compartmental equations are primary tools in the study of disease spreading processes. They provide accurate predictions for large populations but poor results…”
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Susceptible-Infectious-Susceptible Epidemic Model with Symmetrical Fluctuations: Equilibrium States and Stability Analyses for Finite Systems by Adami, Paulo S., Menin, Olavo H., Martinez, Alexandre S.

“…Accurate prediction of epidemic evolution faces challenges such as understanding disease dynamics and inadequate epidemiological data. A recent approach faced…”
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Is it possible to compare researchers with different scientific interests? by BATISTA, Pablo D, CAMPITELI, Monica G, KINOUCHI, Osame, MARTINEZ, Alexandre S

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Inadequate Sampling Rates Can Undermine the Reliability of Ecological Interaction Estimation by Cabella, Brenno, Meloni, Fernando, Martinez, Alexandre S.

“…Cycles in population dynamics are abundant in nature and are understood as emerging from the interaction among coupled species. When sampling is conducted at a…”
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Using Symmetry to Enhance the Performance of Agent-Based Epidemic Models by Nakamura, Gilberto M., Souza, Alinne C. C., Souza, Francisco C. M., Bulcao-Neto, Renato F., Martinez, Alexandre S., Macedo, Alessandra A.

“…Symmetries express the invariance of a system towards sets of mathematical transformations. In more practical terms, symmetries greatly reduce or simplify the…”
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Exact Evaluation of Statistical Moments in Superradiant Emission by Nakamura, Gilberto M., Cabella, Brenno, Martinez, Alexandre S.

“…Superradiance describes the coherent collective radiation caused by the interaction between many emitters, mediated by a shared electromagnetic field. Recent…”
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Efficient method for comprehensive computation of agent-level epidemic dissemination in networks by Nakamura, Gilberto M., Monteiro, Ana Carolina P., Cardoso, George C., Martinez, Alexandre S.

“…Susceptible-infected (SI) and susceptible-infected-susceptible (SIS) are simple agent-based models often employed in epidemic studies. Both models describe the…”
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Texture analysis using graphs generated by deterministic partially self-avoiding walks by Backes, André R., Martinez, Alexandre S., Bruno, Odemir M.

“…Texture is one of the most important visual attributes for image analysis. It has been widely used in image analysis and pattern recognition. A partially…”
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Finite Symmetries in Agent-Based Epidemic Models by Nakamura, Gilberto M., Monteiro, Ana Carolina P., Cardoso, George C., Martinez, Alexandre S.

“…Predictive analysis of epidemics often depends on the initial conditions of the outbreak, the structure of the afflicted population, and population size…”
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Generalized Allee effect model by dos Santos, Lindomar S., Cabella, Brenno C. T., Martinez, Alexandre S.

“…The Allee effect consists of a positive correlation between very small population size and fitness. Offering a new view point on the weak and strong…”
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Boundary element method and simulated annealing algorithm applied to electrical impedance tomography image reconstruction by Menin, Olavo H., Rolnik, Vanessa, Martinez, Alexandre S.

“…Physics has played a fundamental role in medicine sciences, specially in imaging diagnostic. Currently, image reconstruction techniques are already taught in…”
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Deformed exponential function for complex argument: writing roots of polynomial equations with complex coefficients by Paulo S. Adami, Olavo H. Menin, Alexandre S. Martinez

“…The generalization of the logarithm and exponential functions proposed by Tsallis in 1988 has brought contributions in several areas in the last decades…”
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Escaping from cycles through a glass transition by Risau-Gusman, Sebastian, Martinez, Alexandre S, Kinouchi, Osame

“…A random walk is performed over a disordered media composed of N sites random and uniformly distributed inside a d-dimensional hypercube. The walker cannot…”
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Transferred energy and acoustic spin density in fluid spherical core-shell scattering scenarios by Alcaras, Jose R., Martinez, Alexandre S.

“…Sound wave scattering, along with radiation force and torque, are constantly in vogue topics for several distinct applications, such as small object…”
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Internal acoustic energy of fluid scattering centers: Application to metamaterials by Alcaras, Jose R., Martinez, Alexandre S.

“…From its origins, scattering theory seeks to understand the way scattering patterns are related to scattering centers, in the far-field region. However,…”
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A Multifractal Detrended Fluctuation Analysis approach using generalized functions by Mendonça, Suzielli M., Cabella, Brenno C.T., Martinez, Alexandre S.

“…Detrended Fluctuation Analysis (DFA) and its generalization for multifractal signals, Multifractal Detrend Fluctuation Analysis (MFDFA), are widely used…”
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Vegetation cover reveals the phase diagram of patch patterns in drylands by Meloni, Fernando, Nakamura, Gilberto M., Granzotti, Cristiano R.F., Martinez, Alexandre S.

“…Drylands are ecosystems with limited water resources, often subjected to desertification. Conservation and restoration efforts towards these ecosystems depend…”
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Extension of inverse q-Fourier transform via conformal mapping by Nakamura, Gilberto M., de Martini, Alexandre H., Martinez, Alexandre S.

“…We extend the generalized q-Fourier transform to include arbitrary values of the non-extensive parameter q. The procedure involves conformal mapping and…”
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Deterministic walks as an algorithm of pattern recognition by Campiteli, Mônica G, Batista, Pablo D, Kinouchi, Osame, Martinez, Alexandre S

“…New tools for automatically finding data clusters that share statistical properties in a heterogeneous data set are imperative in pattern recognition research…”
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