Representation and estimation of the power coefficient in wind energy conversion systems by González-Hernández, José Genaro, Salas-Cabrera, Rubén

“…This paper aims at summarizing various methods used for representing and estimating the power coefficient in wind turbines, such as exponential, sinusoidal and polynomial models, as well as mathematical tools known as state observers. We present an exhaustive bibliographic review of the models used to calculate the power coefficient, given that this type of studies are scarce nowadays. …”

Experiencias, valoraciones y significados de la escuela en jóvenes adolescentes de educación básica y media en una institución pública de Boyacá, voces y relatos de vida by Acevedo León, Diego Fernando

Resolución de problemas como propuesta para la enseñanza de las estructuras aditiva y multiplicativa en grado sexto by Gómez Rodríguez, Nicolle Johana, Ramírez Robles, Maryuri

Methodology for mudflow hazard assessment triggered by rainfall, in El Rollo Watershed, San Bernardo, Nariño by Córdoba Pazos , Álvaro Camilo, Maffla Chamorro, Francisco Ricardo

“…The implementation of a mathematical FLO-2D model allowed a rainfall to flow transition used to determinate the hydric characteristics on the area, subsequently, the threat level in the basin is evaluated through the modeling of a torrential event proposed for different scenarios, establishing depths and peak flow speed rates for each setting over potential deposition zones. …”

Tuning of a temperature controller through a programmable automatism by Cera-Martínez, Daniel, Ortiz-Sandoval, Jesús Eduardo, Gualdrón-Guerrero, Oscar Eduardo

“…The system is composed of a container with water, a PID controller in the PLC s7-300, making use of the temperature control module Siemens FM 355-2C, a resistance heater AC as actuator (controlled by DC voltage), and thermocouple type as a temperature sensor. The mathematical model of the system, as well as the constants of the PID controller, were obtained making use of the Matlab PID Tuner computational tool. …”

A linear programming model for the parallel non-related machines problem, in the drying area of a chilean sawmill by Cifuentes, Nayaret, Gatica, Gustavo, Linfati, Rodrigo

“…The methodology considered two stages: first, the products were grouped by density and fiber type; second, a mathematical model was proposed based on linear programming, which was modeled with AMPL software. …”

Aprendizaje de movimientos rígidos a partir de sus registros semióticos by Paipa Paipa, Lisandro

Solar Radiation Prediction on Photovoltaic Systems Using Machine Learning Techniques by Ordoñez-Palacios, Luis Eduardo, León-Vargas, Daniel Andrés, Bucheli-Guerrero, Víctor Andrés, Ordoñez-Eraso, Hugo Armando

“…Therefore, it is important to use mathematical, statistical, and artificial intelligence models, which allow predicting solar radiation from meteorological data available. …”

The Contours of Economic Sciences Teaching in Eastern Colombia by Rodríguez Araújo, Edilberto

“…In the concrete case of Economics, in recent years there has been an intense debate about mathematical formalization and curricular standardization, as well as training by results, a strategy brokered by the Ministry of National Education. …”

Aprendizaje basado en proyectos mediados por TIC para superar dificultades en el aprendizaje de operaciones básicas matemáticas by Vargas Vargas, Nury Andrea

Linja: A Mobile Application Based on Minimax Strategy and Game Theory by Suárez-Barón, Marco-Javier, Rincón-Díaz, Holman-Jair, González-Rodríguez, Carlos-Daniel, González-Sanabria, Juan-Sebastián

“…The process is obtained from the adaptation of mathematical models for the development of games, using specialized tools that support a multi-paradigm programming language working together with the tools that the same language provides and that potentially serve as a contribution to the development of the game. …”

Didactic sequence: problem solving fraction part-everything and operator in personal learning environment grade 6º by Niño Betancourt, Roberto Alejandro, Chacón Benavídez, José Antonio

“…In the implementation of the didactic sequence, the sampling students appropriated three of the five phases for the resolution of mathematical problems.…”

Applications and challenges of hyperspectral remote sensing in the colombian geology by Camacho-Velasco, Ariolfo, Vargas-García, Cesar Augusto, Rojas-Morales, Fernando Antonio, Castillo-Castelblanco, Sergio Fernando, Arguello-Fuentes, Henry

“…However, the high volume of literature spread into different lines (RS, HSI and geology) makes it difficult to access and analyze it.This paper presents a summary of concepts, principles, and mathematical foundations, including RS research and trends, highlighting its development and challenges in Colombia, and a HSI case use in the Colombian geology, which shows the detection capability of the Hyperion hyperspectral sensor, located in the EQ-1 Satellite for geological mapping, in a test site, at the Girón town northwest of the Santander, Colombia. …”

A comparison of direct and indirect methods for estimating leaf area in peach (Prunus persica) and plum (Prunus salicina) cultivars by Casierra-Posada, Fánor, Zapata-Casierra, Valentina, Cutler, Joseph

“…The objective of the study was to determine and validate the most accurate regression functions for non-destructive estimation of leaf area in some cultivars of peach and plum. In this work, mathematical functions were applied to estimate leaf area in the plum cultivars Gold Fruly, Ecuatoriano, Methley and Horvin, and in the peach cultivars Dorado, Rubidoux, Diamante and Rey Negro. …”

Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks by Saint-Felix-López, Nelson, Álvarez-Deulofeu, Eduardo-Rafael, Candebat-Sánchez, Dario

“…In the investigation, two mathematical calculation models were implemented: a simplified one based on the equivalent mechanical system described by Housner in 1963 and a complex model, which integrates the finite element technique and the spectral modal analysis method with the help of the professional software SAP2000, v.22.0. …”

Econometric modeling and sales forecasts of ginger rhizome in Ecuador by Sabando García, Ángel Ramón, Ugando Peñate, Mikel, Armas Herrera, Reinaldo, Higuerey Gómez, Ángel Alexander, Espín Estrella, Grace Margarita, Villalón Peñate, Antonio

“…Statistical techniques were used for the mathematical, statistical and graphic analysis of simple linear regression and time series using SPSS version 25 software. …”

Measuring Representativeness Using Covering Array Principles by Castro-Romero, Alexander, Cobos-Lozada, Carlos-Alberto

“…Hence, this study shows the elements that make up a new model for measuring representativeness using a mathematical object testing element of coverage arrays called the "P Matrix". …”

Dual silent communication system development based on subvocal speech and Raspberry Pi by Ramírez-Corzo, José Daniel, Mendoza, Luis Enrique

“…This signals were digitized and registered from the throat and sent to an embedded a raspberry pi.In this device was implemented the processing, as it is called the second stage, which besides to store, assumes conditioning, extraction and pattern classification of subvocal speech signals. Mathematical techniques were used as Entropy, Wavelet analysis, Minimal Squares and Vector Support Machines, which were applied in Python free environment program. …”

Apoyo técnico en la elaboración y revisión de diseños de pavimentos en el municipio de Motavita-Boyacá by Hernández Rojas, Daniela Andrea

Development of an Adaptive Trajectory Tracking Control of Wheeled Mobile Robot by Suarez-Rivera, Guiovanny, Muñoz-Ceballos, Nelson David, Vásquez-Carvajal, Henry Mauricio

“…Classical modeling and control methods applied to differential locomotion mobile robots generate mathematical equations that approximate the dynamics of the system and work relatively well when the system is linear in a specific range. …”