ECORFAN Journal-Republic of Paraguay, Volume 5, Number 9, December-2019, is a biannual Journal edited by ECORFAN-Republic of Paraguay. Alberdi No. 105, Av. Capitán Rivarola, City of Luque, Central Department, Paraguay. CP: 11500 http://www.ecorfan.org/republicofparaguay/journal.php, journal@ecorfan.org. Editor in charge Ramona Centeno Roa. ISSN: 2414-4827. Responsible for the last update of this issue ECORFAN Computer Unit. Imelda Escamilla Bouchán, PhD. Vladimir Luna Soto, PhD. Alberdi No. 105, Av. Capitán Rivarola, City of Luque, Central Department, Paraguay. CP: 11500 Date of last update December 31, 2019. The opinions expressed by the authors do not necessarily reflect the position of the publisher of the publication. It is strictly forbidden the total or partial reproduction of the contents and images of the publication without prior authorization from the National Directorate of Intellectual Property