Investigaciones: Envíos recientes
Mostrando ítems 941-960 de 1465
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Predictive Analysis and Data Visualization Approach for Decision Processes in Marketing Strategies: A Case of Study
(Cartagena de Indias, 2020-10-08)In this paper, we perform a new strategy for recommender systems in online entertainment platforms. As a case of study, we analyzed the reading preferences based on users of Goodreads, a social network for readers, to ... -
Optimal selection and location of fixed-step capacitor banks in distribution networks using a discrete version of the vortex search algorithm
(Cartagena de Indias, 2020-09-19)This paper deals with the problem of the optimal selection of capacitor banks in electrical AC distribution systems for minimizing the costs of energy losses during a year of operation through a discrete version of the ... -
Control neuro-fuzzy para páncreas artificial desarrollo y validación in-silico
(Cartagena de Indias, 2020)La Diabetes Mellitus Tipo 1 (DMT1) es una de las enfermedades actuales más dañinas que afectan a personas de cualquier edad incluyendo niños desde el nacimiento. Las inyecciones de insulina exógena siguen siendo el tratamiento ... -
Mixed-integer programming model for transmission network expansion planning with Battery Energy Storage Systems (BESS)
(Cartagena de Indias, 2020-08-25)This article assesses the costs and benefits of incorporating battery energy storage systems (BESS) in transmission network expansion planning (TEP) over multiple time periods. We propose a mixed-integer programming model ... -
Principales dificultades del alumnado universitario novel a la hora de elaborar un texto científico
(Cartagena de Indias, 2020-05-14)El presente trabajo de investigación-acción es un análisis mixto de corte descriptivo de los errores de micro-redacción, macro-redacción, metodológicos y de escritura en una presentación pública cometidos por 46 estudiantes ... -
Impacto de la comunicación de la responsabilidad social universitaria en la selección de universidad y efecto mediador de la reputación
(Cartagena de Indias, 2020-08)El naciente concepto de responsabilidad social universitaria (RSU) consiste en el cumplimiento de la misión de la universidad dentro de unos estándares éticos, de apoyo a la comunidad, respeto al ser humano y al medio ... -
Hybrid calibration method for improving 3D measurement accuracy of structured light systems
(Cartagena de Indias, 2020-08-21)In structured-light systems, the lens distortions of the camera and the projector reduce the measurement accuracy when calibrated as a standard stereo-vision system. The conventional compensation via distortion coefficients ... -
Global stabilization of a reaction wheel pendulum: A discrete-inverse optimal formulation approach via a control lyapunov function
(Cartagena de Indias, 2020-10-26)This paper deals with the global stabilization of the reaction wheel pendulum (RWP) in the discrete-time domain. The discrete-inverse optimal control approach via a control Lyapunov function (CLF) is employed to make the ... -
Discrete-Inverse Optimal Control Applied to the Ball and Beam Dynamical System: A Passivity-Based Control Approach
(Cartagena de Indias, 2020-08-14)This express brief deals with the problem of the state variables regulation in the ball and beam system by applying the discrete-inverse optimal control approach. The ball and beam system model is defined by a set of ... -
Método de evaluación de la calidad del servicio de una unidad de atención al usuario en una empresa de servicio de agua en Colombia
(Cartagena de Indias, 2020-08)En esta investigación se propuso un método de evaluación de la calidad del servicio de una unidad de atención al usuario en una empresa de servicio de agua en Colombia. Apoyados en la fundamentación teórica asociada a la ... -
A MIQP model for optimal location and sizing of dispatchable DGs in DC networks
(Cartagena de Indias, 2020-08-27)The allocation and dimensioning of distributed generators (DGs) in direct current (DC) power grids were addressed in this study by using a mixed-integer quadratic programming (MIQP) formulation. The MIQP model corresponded ... -
Vortex search and Chu-Beasley genetic algorithms for optimal location and sizing of distributed generators in distribution networks: A novel hybrid approach
(Cartagena de Indias, 2020-08-03)In this study, we analyzed the optimal location and sizing of distributed generators (DGs) in radial distributed networks using a hybrid master-slave metaheuristic technique. The master stage corresponds to the selection ... -
On the efficiency in electrical networks with ac and dc operation technologies: A comparative study at the distribution stage
(Cartagena de Indias, 2020-08-20)This research deals with the efficiency comparison between AC and DC distribution networks that can provide electricity to rural and urban areas from the point of view of grid energy losses and greenhouse gas emissions ... -
What is the best triangulation approach for a structured light system?
(Cartagena de Indias, 2020-05-18)It has become customary to calibrate a camera-projector pair in a structured light (SL) system as a stereo-vision setup. The 3D reconstruction is carried out by triangulation from the detected point at the camera sensor ... -
VRP model with time window, multiproduct and multidepot
(Cartagena de Indias, 2020-02-15)With the increase in the transfer of products in supply chains, the organization of routes requires a complex allocation insofar as different environmental variables are considered, and VRP models are an efficient tool for ... -
Vortex Search Algorithm for Optimal Power Flow Analysis in DC Resistive Networks With CPLs
(Cartagena de Indias, 2019-08-30)This express brief addresses the optimal power flow (OPF) analysis in direct-current (DC) resistive networks with constant power loads (CPLs). The OPF employs the vortex search algorithm (VSA) in conjunction with a power ... -
Voltage stability margin in DC grids with CPLs: A recursive Newton-raphson approximation
(Cartagena de Indias, 2019-03-11)This express brief addresses the voltage collapse problem in direct-current (dc) networks by using a recursive heuristic search algorithm based on the Newton-Raphson method. The determinant of the Jacobian matrix in the ... -
Use of deep learning algorithms for real-time detection of vessels in confined spaces using the Tensorflow framework
(Cartagena de Indias, 2003-01)Over 4515 small boat accidents were registered in the United State of America in 2012, resulting in 651 causalities and 22% of the accidents took place between two boats. It is, therefore, one of the most interesting ... -
Triangular Matrix Formulation for Power Flow Analysis in Radial DC Resistive Grids With CPLs
(Cartagena de Indias, 2019-07)This brief briefly addresses the problem of power flow solution for direct-current (dc) networks with radial configuration and constant power loads (CPLs). It proposes a novel iterative method based on the upper triangular ... -
Solution of the optimal power flow problem in direct current grids applying the hurricane optimization algorithm
(Cartagena de Indias, 2019-09-24)The Colombian electrical power system is being transformed by the large-scale integration of energy storage systems and renewable energy resources to the power system. These technologies can be integrated using alternating ...
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.
