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Quantifying the sorting efficiency of self-propelled run-and-tumble swimmers by geometrical ratchets
(De Gruyter, 2013-12)
Suitable asymmetric microstructures can be used to control the direction of motion in microorganism populations. This rectification process makes it possible to accumulate swimmers in a region of space or to sort different ...
Self-propelled Vicsek particles at low speed and low density
(American Physical Society, 2019-05-02)
We study through numerical simulation the Vicsek model for very low speeds and densities. We consider scalar noise in two and three dimensions and vector noise in three dimensions. We focus on the behavior of the critical ...
Evidence of a robust universality class in the critical behavior of self-propelled agents: Metric versus topological interactions
(American Physical Society, 2014-01-24)
The nature of the interactions among self-propelled agents (SPA), i.e., topological versus metric or a combination of both types, is a relevant open question in the field of self-organization phenomena. We studied the ...
An initial and boundary value problem modleing fish like swimming
(2008)
In this paper we consider an initial and boundary value problem that models the self-propelled motion of solids in a bidimensional viscous incompressible fluid. The self-propelling mechanism, consisting of appropriate ...
Investigation of exposure to occupational noise among forestry machine operators: A case study in Brazil
(2021-03-01)
In mechanized harvesting of wood operations, in a cut-to-length system, occupational noise is emitted by self-propelled forest machines, which compromises the safety and health of operators. Therefore, the occupational ...
Technical-economic analysis of the felling of Eucalyptus species with feller-buncher: A stochastic approachAnálise técnica-econômica da derrubada de Eucalyptus sp. com feller-buncher: Uma abordagem estocástica
(2020-01-01)
In mechanized harvesting operations for wood, the Monte Carlo method allows the probability of occurrence of the technical-economical parameters, with descriptions of the uncertainties and, consequently, the optimization ...
Flow of pedestrians through narrow doors with different competitiveness
(IOP Publishing, 2016-04)
We report a thorough analysis of the intermittent flow of pedestrians through a narrow door. The observations include five different sets of evacuation drills with which we have investigated the effect of door size and ...
Collective dynamics of pedestrians in a corridor: An approach combining social force and Vicsek models
(American Physical Society, 2020-08-12)
We study the pedestrian motion along a corridor in a nonpanic regime, as usually happens in evacuation scenarios in, e.g., schools, hospitals, or airports, by means of Monte Carlo simulations. We present a model, a combination ...