Using learning curves and confidence intervals in a time study for the calculation of standard times

Mitzy Natalia Roncancio Avila, Diana Katherine Reina Moreno, Andrés Mauricio Hualpa Zuñiga, Heriberto Alexander Felizzola Jimenez, Carlos Andres Arango Londoño

Determination of the way resistance coefficient using a trailer’s method.

Ramón Pérez Gálvez, José Ramón Fuentes Vega, Juan Bautista Cogollos Martínez, Víctor Millo Carmenate, Leandro Oscar Botana Beltrán

Comparative analysis of Phytoremediation assays in leach sludge applying Data Envelopment Analysis

Álvaro Chávez Porras, Luis Felipe Pinzón Uribe, Yessica Liceth Velasquez Castiblanco

Neurosignal record with a Brain-Computer interface to estimate the level of stress in a student during a class

Luz Angela Moreno Cueva, César Augusto Peña Cortés, Marisol Maestre Delgado, Surgei Bolivia Caicedo Villamizar, Aldo Pardo García

Inverted Unified Power Quality Conditioner to compensate overvoltage

Yeison Alberto Garcés Gómez, Nicolás Toro García, Fredy Edimer Hoyos Velasco