Épsilon

9

Authors: Sonia Camargo Urrea, Liliana Peralta Baquero, Julia Luna Amador, Magdalena Garnica Holguín

Production units (PU) for processing food have a high rate of non-compliance of the rules on food processing. For this reason, the Bogotá Mayor’s Office, through the District’s Department of Economic Development, entered into an agreement with La Salle University in which the impact of the training process in good manufacturing practices, hazard analysis and critical Control Points and ISO 22000 for 50 PU was evaluated. For this purpose, initial diagnosis visits were carried out, and an improvement plan for each PU was established and socialized. Later, a training process was executed and, finally, a second visit for tracking and verification was conducted. As a result of the process, the following improvements were obtained: 14.70% in physical facilities, 12.70% in reception controls; 13.50% in locative hygiene for the process area, 16.70% in process control, 19.20% in staff, and 8.70% in quality documentation, compared to the ideal percentage of compliance. This showed that the training process and the socialization of the improvement plan for each PU, led companies to continuous improvement, thus contributing significantly to compliance with current regulations.

14

Authors: Carlos Adrián Correa, Ricardo Bolaños, Alejandro Garcés

This paper presents a methodology for solving the hydrothermal dispatch problem when environmental impacts considered. The solution is obtained through a high order interior point model for optimization that considers power flow (DC Model) constraints, reservoir and generation limits, as well as emission reduction. The goal is to minimize both emissions and costs, which becomes a multiobjective problem considering that both objectives are in conflict. To face this fact, a weighted sum method is used in order to obtain a Pareto optimal set of solutions so they can be analyzed by a decision maker. A 6-bus test system with two hydroelectric plants and two thermal plants is used to show the obtained results

16

Authors: Diego Alexander Escobar García, Francisco Javier García Orozco

In the project Studies for the development of land use planning and technical studies for the road system in the South Central region of the Caldas Department, conducted by Universidad Nacional de Colombia (Manizales Campus), the integral design of road interventions established by the Departmental Administration was proposed. The characterization of traffic and accessibility, offered by current and future infrastructure, became one of the main resources for planning. In these studies, it is necessary to evaluate the physical and operational characteristics of the infrastructures, with the purpose of performing, through comparison of parallel scenarios, the modifications and extensions that the transportation system actually requires; in order to do so, the goal was to promote neglected and isolated areas. An analysis of the average global accessibility offered by the road network was conducted; this was calculated in a study area of 35 km radius from the urban area of the town of Palestina, in order to establish a compact area of direct influence over the South Central region, taking into account that the Aeropuerto del Café (Coffee Airport) will be located in that municipality

18

Authors: Víctor Leonardo López Jiménez

The geographical location of the La Salle University campuses and the physical characteristics that surround them are determinant factors to explain the climatic conditions that are present in the daily life of the Lasallian academic community located in Bogota. These campuses are located at the lower foothills of the Eastern Mountains (Cordillera Oriental), a mountain range that constitutes the border of the city and that, due to its height and orientation, acts as a modifying factor of the prevailing weather conditions in the area. Given these considerations, the goal was to explain the special behavior at the foothills of certain parameters throughout the year, such as rainfall, temperature, humidity, air, sunshine and wind. It was established that the campuses are located on the most humid and rainy sector of the city, where daylight hours are reduced over a long period of the year due to the continuous formation of orographic clouds and where cold drafts often come down from the mountain.