Artículos arbitrados
https://repository.uaeh.edu.mx/bitstream/123456789/11362
2024-03-29T04:48:50Z
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Cognitive Decline
An Analysis of the Elderly Population in Isolated Regions of
Mexico
https://repository.uaeh.edu.mx/bitstream/123456789/16039
Cognitive Decline
An Analysis of the Elderly Population in Isolated Regions of
Mexico
Rodríguez Torres, Erika Elizabeth
Worldwide studies in the last decade have measured the rate of cognitive decline in the elderly population,
mainly in Australia, Europe, United States, and Canada. In Mexico, this information is very limited and the population of
Hidalgo State has never been studied. Therefore, we decided to perform a transversal study to determine the rate of
cognitive decline in this region. We will present an analysis in order to establish the main differences between rural and
urban areas, as well as identifying the particular triggers of cognitive decline on each area.
2014-01-01T00:00:00Z
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Un estudio sobre la recta tangente en puntos de inflexión desde la articulación de saberes
https://repository.uaeh.edu.mx/bitstream/123456789/11382
Un estudio sobre la recta tangente en puntos de inflexión desde la articulación de saberes
Rondero Guerrero, Carlos
2009-01-01T00:00:00Z
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Análisis de Estabilidad de un Controlador PID WAVELET
https://repository.uaeh.edu.mx/bitstream/123456789/11385
Análisis de Estabilidad de un Controlador PID WAVELET
Itzá Ortiz, Benjamín Alfonso
En este trabajo se analiza la estabilidad de un controlador PID multiresolución, el cual hace uso de la teorÃa wavelet para la descomposición de la señal de error de seguimiento. Se presenta una función de error general en términos de errores parciales la cual nos da las diversas frecuencias en las que aparece el error. Una vez obtenido el espectro de la señal del error, dividimos el error en sus frecuencias que se ponderan por unas ganancias propuestas por el diseñador y suponiendo que la señal es constante se obtiene la estabilidad del sistema de lazo cerrado.In this work we analyze the stability of a PID multiresolution controller, which uses wavelet theory for the decomposition of the tracking error signal. We present a general error function in terms of partial errors which gives us the various frequencies appearing in the general errors. Once we obtain the spectrum of the error signal, we divide the error at frequencies that are weighted by earnings proposed by the designer, and assuming that the reference signal is constant, it follows the stability of the closed loop system.
2011-01-01T00:00:00Z
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TEACHERS' CONSTRUCTION OF DYNAMIC MATHEMATICAL MODELS BASED ON THE USE OF COMPUTATIONAL TOOLS
https://repository.uaeh.edu.mx/bitstream/123456789/11373
TEACHERS' CONSTRUCTION OF DYNAMIC MATHEMATICAL MODELS BASED ON THE USE OF COMPUTATIONAL TOOLS
Reyes Rodríguez, Aarón Víctor
To what extent does the use of computational tools offer teachers the possibility of constructing dynamic models to identify and explore diverse mathematical relations? What ways of reasoning or thinking about the problems emerge during the models construction with the use of the tools? These research questions guided the development of the study that led us to document the process exhibited by high school teachers to model mathematical situations dynamically. In particular, there is evidence that the use of computational tools helped them identify and explore a set of mathematical relations dynamically. In this process, the participants had opportunity of fostering an inquisitive approach to models construction that values ways of formulating conjectures or mathematical relations and ways to support them.
2009-01-01T00:00:00Z