| Table of contents Tecnura vol.21 no.53 Bogotá July/Sept. 2017 Editorial | | | | · EDITORIAL GARCÍA-UBAQUE, CÉSAR AUGUSTO
| | | Research | | | | · Simulation of the styrene production process via catalytic dehydrogenation of ethylbenzene using CHEMCAD® process simulator Pérez-Sánchez, Amaury; Sánchez, Eddy Javier Pérez; Segura Silva, Rutdali María
| | | | · Design and implementation of control system for unmanned aerial vehicle quadrotor Lara Sosa, Brian Mauricio; Fagua Perez, Elkin Yilmar; Salamanca, Juan Mauricio; Higuera Martínez, Oscar Iván
| | | | · Smart control application in the oscillations using FACTS (STATCOM and SVC) Alzate-Gomez, Alfonso; Bedoya-Londoño, Andrea; Marulanda-Durango, Jesser James
| | | | · Determination of distributed generation poles from agricultural residual biomass in Madre de Dios, Peru Vargas-Soplín, Andrés de Jesús; Ramírez-Candia, Judith María
| | | | · Comparison of spatial interpolation techniques to predict soil properties in the colombian piedmont eastern plains Castro Franco, Mauricio; García Ramírez, Dayra Yisel; Jiménez López, Andrés Fernando
| | | Case Study | | | | · Evaluation and comparison of the grain size analysis obtained from natural and recycled aggregates Palacio-León, Óscar; Chávez-Porras, Álvaro; Velásquez-Castiblanco, Yessica Liceth
| | | | · Personalized adaptive interfaces for supporting recommendation from learning object repositories Salazar-Ospina, Oscar Mauricio; Rodríguez-Marín, Paula Andrea; Ovalle-Carranza, Demetrio Arturo; Duque-Méndez, Néstor Darío
| | | Review | | | | · Smart grids in the colombian electric system: Current situation and potential opportunities Giral-Ramírez, William Mauricio; Celedón-Flórez, Hugo José; Galvis-Restrepo, Eduard; Zona-Ortiz, Angela Tatiana
| | | Reflection | | | | · Urban transport entropies in the metropolitan area of Guadalajara: Automobility and air quality De Quevedo García Najar, Fernando; Asprilla Lara, Yefer; González Pérez, Mario Guadalupe
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