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Test time assessment on student's performance of statistics subjects by general...
Brum, Esttefani Duarte; Liska, Gilberto Rodrigues; Santos, Alisson DarósCan the time it takes a student to complete a test influence his / her performance? To answer this question, the logistic regression model was considered. In its development, evaluation was considered as a way of quantifying the performance of a student reflecting his degree of knowledge in a given content. For this we use records of the initial and final moments when developing an evaluation. The records of ti...
Sobre uma família de equações de evolução não lineares : existência, classifica...
Santos, Alisson DarósCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); This thesis is concerned with the orbital instability for a specific class of periodic traveling wave solutions with the mean zero related to the modified Camassa-Holm equation. These solutions, called snoidal waves, are written in terms of the Jacobi elliptic function sn. To prove these results we use the abstract methods of Grillakis, Shatah...
Estabilidade de Standing waves
Santos, Alisson DarósFinanciadora de Estudos e Projetos; This work is concerned with the orbital stability of special solutions called "standing waves" for Hamiltonian systems in a real and invariant Hilbert space under the action of a specific group of isometries in such space. The stability investigated is orbital in the usual sense for a dynamical system and is with respect to perturbations of the initial condition. Initially we...