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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 ...
Cambios en el periodismo y su impacto en la autonomía profesional: evidencia del estudio The Worlds of Journalism en siete países de América Latina
(2022-12-28)
Los debates en torno al futuro del periodismo posibilitaron numerosas investigaciones sobre sus cambios en el nuevo contexto hiperdigitalizado. Sin embargo, se desconoce su impacto en la libertad de prensa, específicamente ...
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 ...
Optimal Economic–Environmental Operation of BESS in AC Distribution Systems: A Convex Multi-Objective Formulation
(2021-12-10)
This paper deals with the multi-objective operation of battery energy storage systems
(BESS) in AC distribution systems using a convex reformulation. The objective functions are CO2
emissions, and the costs of the daily ...
A quadratic convex approximation for optimal operation of battery energy storage systems in DC distribution networks
(2021-11-07)
This paper proposes a quadratic convex model for optimal operation of battery energy storage systems in a direct current (DC) network that approximates the original nonlinear non-convex one. The proposed quadratic convex ...
Propuesta de diseño de un plan de producción más limpia en el restaurante y pizzería Danna’s House en Cartagena de Indias Bolivar
(2021)
Los restaurantes son establecimientos que se dedican a la prestación de servicio con orientación al cliente, su objetivo fundamental es ofrecer a sus consumidores un lugar agradable y confortable. Sin embargo, como cualquier ...
Análisis comparativo de la gestión del conocimiento y de los modelos más representativos implementados en las PYMES colombianas y chilenas
(2021)
Knowledge management is an intangible resource of great value for organizations, this asset allows them to excel, competing with optimal and profitable processes, giving room for innovation, the creation of new products ...
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.