Search Results - "Nakamura, Gilberto M."

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Feynman gauge on the lattice: new results and perspectives by Cucchieri, Attilio, Mendes, Tereza, Santos, Gilberto M. Nakamura e Elton M. S

“…We have recently introduced a new implementation of the Feynman gauge on the lattice, based on a minimizing functional that extends in a natural way the…”
Get full text

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

“…Sci. Rep. 9, 15841 (2019) Empirical records of epidemics reveal that fluctuations are important factors for the spread and prevalence of infectious diseases…”
Get full text

Many-body methods in agent-based epidemic models by Nakamura, Gilberto M, Martinez, Alexandre S

“…The susceptible-infected-susceptible (SIS) agent-based model is usually employed in the investigation of epidemics. The model describes a Markov process for a…”
Get full text

Finite symmetries in agent-based epidemic models by Nakamura, Gilberto M, Monteiro, Ana Carolina P, Cardoso, George C, Martinez, Alexandre S

“…We present an algorithm which explores permutation symmetries to describe the time evolution of agent-based epidemic models. The main idea to improve…”
Get full text

Fast computation method for comprehensive agent-level epidemic dissemination in networks by Nakamura, Gilberto M, Monteiro, Ana Carolina P, Cardoso, George C, Martinez, Alexandre S

“…Two simple agent based models are often employed in epidemic studies: the susceptible-infected (SI) and the susceptible-infected-susceptible (SIS). Both models…”
Get full text

Phase diagram and spectral properties of a new exactly integrable spin one quantum chain by Alcaraz, Francisco C, Nakamura, Gilberto M

“…J. Phys. A: Math. Theor. vol 43 (2010) 155002 The spectral properties and phase diagram of the exact integrable spin one quantum chain introduced by Alcaraz…”
Get full text

Gluon Propagators in Linear Covariant Gauge by Cucchieri, Attilio, Mendes, Tereza, Nakamura, Gilberto M, Santos, Elton M. S

“…The implementation of the linear covariant gauge on the lattice faces a conceptual problem: using the standard compact discretization, the gluon field is…”
Get full text