Nicolás de los Garza

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This paper presents the optimal regulator for a linear system with time delay in control input and a quadratic criterion. The optimal regulator equations are obtained using the duality principle, which is applied to the optimal filter for linear systems with time delay in observations, and then proved using the maximum principle. Performance of the obtained(More)
In this paper, the optimal filtering problem for linear systems with state delay over linear observations is treated proceeding from the general expression for the stochastic Ito differential of the optimal estimate and the error variance. As a result, the optimal estimate equation similar to the traditional Kalman-Bucy one is derived; however, it is(More)
In the present work we discuss the self-affine properties of the fracture surfaces of sodalime glass obtained under quasi-static conditions. The fracture surfaces are generated using a threepoint bending system in normal room conditions and under high humidity conditions. The surfaces were recorded both by Scanning Electron Microscopy and Atomic Force(More)
In this study we examined the comparability of the Personality Inventory for Youth (PIY; Lachar & Gruber, 1993, 1995)--Spanish version to its English counterpart among bilingual Mexican American male and female high school students (n = 120), and among incarcerated bilingual Mexican American male adolescents (n = 52). Results indicated that language(More)
  • Rodrígo Quezada-Lázaro, Eunice A. Fernández-Zuñiga, +6 authors Madero y Aguirre
  • 2016
Background: Nasturtium officinale is a plant used in Mexican traditional medicine to treat respiratory infections such as tuberculosis. In previous studies, it was found that the chloroform extract of the aerial parts of N. officinale showed good activity against one sensitive and four drug-resistant Mycobacterium tuberculosis H37Rv strains. Therefore, the(More)
In this paper, the optimal filtering problem for nonlinear systems over linear observations with time delay is treated proceeding from the general expression for the stochastic Ito differential of the optimal estimate and the error variance. As a result, the Ito differentials for the optimal estimate and error variance corresponding to the stated filtering(More)
Climate control is one of the principal reasons to use a greenhouse. The efficiency of the control depends of the precision of the model that better describes the dynamics variables inside the greenhouse. Is presented a modification of a climate model in an greenhouse in order to include the effects of: air density variations due to humidity changes, the(More)
Universidad Autónoma de Nuevo León – UANL, Av. Universidad, s/n, Cd. Universitaria, CP 66450, San Nicolás de los Garza, Nuevo León, México Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología – CIIDIT, Universidad Autónoma de Nuevo León – UANL, Km 10, Nueva Autopista al Aeropuerto Internacional de Monterrey, CP 66600, Apodaca, Nuevo(More)
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