Linear programming constitutes university students’ first approach to numerical optimization. The involved concepts require a high level of abstraction. It is thus important to understand how they are constructed. This study presents the results obtained from the use of an APOS Theory based didactical model together with a simple modeling problem t...
Introduction : in the teaching of mathematics, the use of technological resources has become important in teaching practices. However, on some occasions the non-professionalization of teachers in the classroom prevents them from being able to use this type of tools effectively and in accordance with today’s educational needs. Objective: characteriz...
The aim of this work is to propose and analyse factors for the construction of an index of vulnerability to contamination of urbanised coastal karst aquifers. Due to the high anthropic modifications of the territories, the city of Playa del Carmen, Quintana Roo, was taken as the study area. Four factors were addressed: relief, climate, sea level ri...
Determining technical losses in an electrical system is highly complex due to the large amount of information required for its evaluation. A solution to this problem is the evaluation of losses using an artificial neural network. In this work, a model for evaluating technical losses in subtransmission electrical networks was obtained by using artif...
RESUMEN La gestión del recurso hídrico es prioritaria en la agenda de la Organización de las Naciones Unidas. Tres vectores son esenciales, cantidad, calidad y escenarios del cambio climático en el recurso hídrico. En la región centro de Tamaulipas, México, destaca la red fluvial de la cuenca del río Soto la Marina, con los ríos Corona, Purificació...
Se realizó la implementación de un modelo de calidad del agua superficial, a través del cual se procuraba hacer un primer acercamiento a los procesos de modelado matemático como insumo para la gestión integrada de la cuenca media del río Virilla. El estudio se desarrolló específicamente en un tramo de 20 km que inicia en San Miguel de Santo Domingo...
In order to identify the periods of higher or lower precipitation and their respective variations, the water precipitation in the city of Riobamba is analyzed, using daily and monthly precipitation data from 1978 to 2019. Using non-conventional statistical methods, the Kolmogorov Smirnov method is applied to establish the normality of the data, whi...
Context: The evaluation of air quality in Colombia is localized; it does not go beyond determining whether the level of the polluting gas at a specific point of the monitoring network has exceeded a threshold, according to a norm or standard, in order to trigger an alarm. It is not committed to objectives as important as the real-time identificatio...
Se ha realizado el estudio con el objetivo de optimizar la toma de decisiones en una planta de producción y distribución de compuestos químicos, apoyándose con la herramienta de modelación llamado Flexsim. Se realizó la siguiente metodología: por medio de la metodología denominada DMAIC se propuso un procedimiento en el que se establece para cada f...
The management of water resources is a priority on the agenda of the United Nations. Three vectors are essential, quantity, quality, and climate change scenarios in water resources. In the central region of Tamaulipas, México, the fluvial network of the Soto la Marina river watershed stands out, with the Corona, Purificación and Pilón rivers as the...
