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Use of the rice and corn husk ashes as an innovative pozzolanic material in ceramic tile adhesive production
(2021-11-01)
In this study, the use of agro-industrial waste from rice and corn husk ashes as a pozzolanic addition for cement substitution in the manufacture of ceramic tile adhesive is presented. The cement replacement, at 15%, 20%, ...
La Comisión de la Verdad en Colombia: conocimiento, percepción, eficacia y emociones asociadas
(2021-10-22)
La Comisión de la Verdad en Colombia se estableció a partir del modelo de justicia transicional. Su función es servir como medida de reconocimiento de los hechos violentos durante el conflicto armado, que han dejado más ...
Application of the Crow Search Algorithm to the Problem of the Parametric Estimation in Transformers Considering Voltage and Current Measures
(2022-06-06)
The problem of the electrical characterization of single-phase transformers is addressed in this research through the application of the crow search algorithm (CSA). A nonlinear programming model to determine the series ...
A successive approximations method for power flow analysis in bipolar DC networks with asymmetric constant power terminals
(2022-07-02)
This paper deals with the power flow problem in bipolar direct current distribution networks with unbalanced constant power loads. The effect of the neutral wire is considered in two prominent cases: (i) when the system ...
A fixed-point current injection power flow for electric distribution systems using Laurent series
(2022-07-02)
his paper proposes a new power flow (PF) formulation for electrical distribution systems using the current
injection method and applying the Laurent series expansion. Two solution algorithms are proposed: a Newtonlike ...
Youth unemployment during economic shocks: Evidence from the metal-mining prices super cycle in Chile
(2022-08-19)
We analyze the effect of an exogenous commodity shock on youth long-run unemployment, and the causal mechanisms that underlie this relationship. We use Chile as a study case and the Metal Mining Price Super Cycle between ...
ISeeU2: Visually Interpretable ICU mortality prediction using deep learning and free-text medical notes
(2020-05-20)
Accurate mortality prediction allows Intensive Care Units (ICUs) to adequately benchmark clinical practice and identify patients with unexpected outcomes. Traditionally, simple statistical models have been used to assess ...
Cost-Effectiveness Analysis of Strategies of COVID-19 Vaccination in Colombia: Comparison of High-Risk Prioritization and No Prioritization Strategies With the Absence of a Vaccination Plan
(2022-05-26)
Objectives: Our study compares two national COVID-19 vaccination plan strategies—high-risk prioritization and no prioritization—and estimates their cost-effectiveness compared with no vaccination, to generate possible ...
An Efficient Methodology for Locating and Sizing PV Generators in Radial Distribution Networks Using a Mixed-Integer Conic Relaxation
(2022-07-27)
This paper proposes a new solution methodology based on a mixed-integer conic formulation to locate and size photovoltaic (PV) generation units in AC distribution networks with a radial structure. The objective function ...
Solving the Optimal Reactive Power Dispatch Problem through a Python-DIgSILENT Interface
(2022-07-25)
The Optimal Reactive Power Dispatch (ORPD) problem consists of finding the optimal settings of reactive power resources within a network, usually with the aim of minimizing active power losses. The ORPD is a nonlinear and ...
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.