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Simplified mathematical model for computing draining operations in pipelines of undulating profiles with vacuum air valves
(2020-09-11)
The draining operation involves the presence of entrapped air pockets, which are expanded during the phenomenon occurrence generating drops of sub-atmospheric pressure pulses. Vacuum air valves should inject enough air to ...
Analysis of hydraulic transients during pipeline filling processes with air valves in large-scale installations
(2020-04-13)
During the filling process in pressurized hydraulic systems, sudden pressure changes generated inside the pipes can cause significant damage. To avoid these excessive overpressures, air valves should be installed to allow ...
Professional Autonomy and Structural Influences: Exploring How Homicides, Perceived Insecurity, Aggressions Against Journalists, and Inequalities Affect Perceived Journalistic Autonomy in Colombia
(2020)
Journalistic autonomy has been studied more frequently in countries with secure democracies in terms of journalists’ perceptions of freedom and independence to work in the midst of the controls, pressures, and influences ...
Quasi-static flow model for predicting the extreme values of air pocket pressure in draining and filling operations in single water installations
(2020)
Inertial models have been used by researchers to simulate the draining and filling processes in water pipelines, based on the evolution of the main hydraulic and thermodynamic variables. These models use complex differential ...
Diagnóstico de las organizaciones solidarias del sector artístico-cultural en Córdoba y Sucre
(2020)
Este estudio desde las industrias creativas y de economía solidaria, tuvo como objetivo diagnosticar las organizaciones solidarias artístico-culturales en los departamentos de Colombia, Córdoba y Sucre; para lo cual se ...
Quality Improvement in Ammonium Nitrate Production Using Six Sigma Methodology
(2020)
Six sigma has been used in different industries to reach operational excellence. However, in the chemical industry, the application of this methodology is limited. This research presents an implementation of the six sigma ...
Ergonomic Portable Measuring System Designed to Assist Patients with Metacarpal Injuries
(2020-12-24)
Metacarpal injuries are a very widespread cause of consultations in emergency hospitals and are related to several types of injuries as well as, partial loss of mobility due to traffic, work or home accidents. After medical ...
A validation strategy for a target-based vision tracking system with an industrial robot
(2020-05-20)
Computer vision tracking systems are used in many medical and industrial applications. Understanding and modeling the tracking errors for a given system aids in the correct implementation and operation for optimal measurement ...
Generating density maps for convolutional neural network-based cell counting in specular microscopy images
(2020)
Accurate endothelial cell density with specular microscopy is essential for correct clinical assessment of the cornea. Commercial specular microscopes incorporate automated cell segmentation methods to estimate cell density. ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.