The Publicaciones e Investigaciones Journal is one of the means by which the Universidad Nacional Abierta y a Distancia, UNAD, and the Escuela de Ciencias Básicas, Tecnología e Ingeniería – ECBTI disseminate their scientific advances, and is published on a semestral basis. It seeks to facilitate the circulation of scientific and applied knowledge in subjects from different areas of the engineering field, with original articles that are evaluated by double-blind pairs, and also to encourage the visibility and impact of the research performed on both national and international levels.