| Table of contents ing. vol.26 no.2 Bogotá May/Aug. 2021 Editorial | | | | · La universidad en la sociedad de la ignorancia Rodríguez, Diego Julian
| | | Research Articles | | | | · A Maximal Profit Supply Chain Design: A Biopesticide Production-Distribution Case Study Moros Daza, Adriana; Mendoza Crespo, Henry; Amaya Mier, René; Ortiz Velasquez, Mauricio
| | | Review Articles | | | | · Challenges in the Modeling of Traceability in Food Supply Chains Maya Trujillo, Tatiana; Orjuela Castro, Javier Arturo; Herrera, Milton M.
| | | Research Articles | | | | · The Distribution System and the Efficacy in Children Food Assistance Programs. The Case of Bienestarina-Colombia Rueda-Velasco, Feizar; Adarme-Jaimes, Wilson; González-Feliu, Jesús
| | | | · Evaluation of Nitrogen Mineralization in an Acid Soil with Inorganic and Organic Fertilization Torres-Lozada, Luz Karime; Escobar-Medina, Duvan; Soto-Paz, Jonathan; Daza-Torres, Martha Constanza; Torres-Lozada, Patricia
| | | | · A proposal for improving the Essence standard by using terminology unification Zapata-Jaramillo, Carlos Mario; Henao-Roqueme, Antony
| | | | · A Metaheuristic Solution for the School Bus Routing Problem with Homogeneous Fleet and Bus Stop Selection Pérez Pérez, Ana Camila; Ansola, Eduardo Sánchez; Rosete, Alejandro
| | | | · Blurred Image Restoration Using a Regularized Linear Programming Model Fuentes, José; Ruiz V, Jorge Mauricio
| | | Case Report | | | | · Effect of Soiling on the Performance of Photovoltaic Modules in Bogotá León-Vargas, Fabián; García-Jaramillo, Maira; Magín Yara, Gelver; Parra, Alejandro
| | | Research Articles | | | | · Vision-based Software Tool System for Position Estimation Using a Smartphone Urbano, Julio; Bacca-Cortes, Bladimir; Buitrago-Molina, José
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