Productos de investigación
Recent Submissions
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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. ... -
Maniobras de llenado y vaciado en grandes conducciones. Aplicación a una tubería de fundición DN400 en Massamagrell (Valencia, España)
(Ingeniería Civil, 2020-01-31)Air pockets inside hydraulic installations during filling and emptying processes can generate pressure surges and negative pressure, respectively. Serious damages can be occurred in pipelines. In order to analyse hydraulic ... -
Increasing driving range for electric vehicles at sub-zero temperatures by optimizing a hybrid storage configuration using supercapacitors
(2020)One of the main challenges electric vehicles manufacturers face is the perceived limited operational range of cars, commonly referred to as "range anxiety". Furthermore, effective range in these vehicles is affected by ... -
Classification of pluviometric networks located in the region of Bogotá, Colombia using artificial neural networks
(2020)This work presents a methodology for the classification of pluviometric networks using artificial neural networks. For this, the network of stations registered in the Corporación Autónoma Regional de Cundinamarca, Colombia, ... -
Causal Analysis of the Pinion Teeth Failure in a Limestone Reclaimer
(2020)This paper presents a causal analysis of an unexpected failure of the pinion teeth of a large reducer installed in a limestone reclaimer which is part of a raw material transportation system of a cement factory. The Montano ... -
Automatic recognition of Colombian car license plates using convolutional neural networks and Chars74k database
(2020)A methodology for the automatic recognition of Colombian car license plates using convolutional neural networks is proposed. One of the biggest challenges when using onvolutional neural network is the demand for large ... -
Application of the backward/forward sweep method for solving the power flow problem in DC networks with radial structure
(2020)This paper presents the application of the backward/forward sweep iterative method for solving the power flow problem in direct current networks with radial structure, considering resistive and constant power loads. The ... -
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 ... -
A Novel Full Boundary Element Formulation for Transient Analysis of Elastic Membranes Coupled to Acoustics Fluids
(2020)A full time-direct Boundary Element Formulation for the dynamic analysis of elastic membranes coupled to acoustics fluid is presented. The elastic membranes is modeled using the classical linear elastic pre-stretched ... -
A Novel Full Boundary Element Formulation for Harmonic Analysis of Elastic Membranes Coupled to Acoustics Fluids
(2020)A novel full Boundary Element Formulation for the harmonic analysis of elastic membranes coupled to acoustics fluid is presented. The elastic membranes is modeled using the classical linear elastic pre-stretched membrane ... -
A Machine Learning Approach for Severe Maternal Morbidity Prediction at Rafael Calvo Clinic in Cartagena-Colombia
(2020-05-22)There is a huge problem in public health around the world called severe maternal morbidity (SMM). It occurs during pregnancy, delivery, or puerperium. This condition establishes risk for babies and women lives since it’s ... -
Optimal location and sizing of PV sources in DC networks for minimizing greenhouse emissions in diesel generators
(2020-02-24)This paper addresses the problem of the optimal location and sizing of photovoltaic (PV) sources in direct current (DC) electrical networks considering time-varying load and renewable generation curves. To represent this ... -
On the nonlinear control of a single-phase current source converter for sinusoidal voltage generation
(2020)Colombian power system is being transformed for the large-scale integration of renewable energy resources and energy storage systems; all of these are integrated by power electronic converters controlled by voltage and ... -
Numerical study of the stress concentration factor in geometries of machine elements using Ansys® and Inventor®
(2020-01)In the present study the stress concentration factor by the finite element method in a round bar grooved axially under tension, a stepped flat plate subjected to bending and a stepped round bar subjected to torsion can be ... -
Nonlinear voltage control for three-phase dc-ac converters in hybrid systems: An application of the pi-pbc method
(2020-05-20)In this paper, a proportional-integral passivity-based controller (PI-PBC) is proposed to regulate the amplitude and frequency of the three-phase output voltage in a direct-current alternating-current (DC-AC) converter ... -
Narrativas para la emergencia del perdón, la reparación y la reconciliación en víctimas del conflicto armado en Colombia
(2020-01-01)En los procesos de construcción de paz en Colombia, perdonar, reconciliarse y buscar la reparación de las víctimas se vuelven condiciones necesarias y decisivas. Estudios precedentes indican que cuando no son abordados ... -
Learning styles for algebra concepts: The case of engineering students at the Universidad de Santander (Valledupar, Colombia)
(2019)The objective of this research was to evaluate the learning styles for algebra concepts of the students of the industrial engineering program of the University of Santander, Valledupar, Cesar, Colombia. A descriptive study ... -
Estrategias de aprendizaje de estudiantes colombianos de grado y posgrado
(Economía, 2020-01-01)Este artículo de investigación expone la importancia de la calidad del aprendizaje docente y analiza las estrategias de aprendizaje en estudiantes de grado y posgrado en educación.Se utilizó un muestreo no probabilístico ... -
Intelligent fault detection system for microgrids
(Ingeniería Electrónica, 2020-03-06)The dynamic features of microgrid operation, such as on-grid/off-grid operation mode, the intermittency of distributed generators, and its dynamic topology due to its ability to reconfigure itself, cause misfiring of ... -
Instrument for selecting and evaluating suppliers in small and medium-sized metalworking enterprises in Cartagena, Colombia
(Ingeniería Mecánica, 2020)The objective of this investigation is the definition of a practical tool that helps to improve the selection process and evaluation of suppliers in small and medium-sized metalworking enterprises in Cartagena city. For ...
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