Productos de investigación: Envíos recientes
Mostrando ítems 881-900 de 1398
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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 ... -
Scientific reasoning skills and patterns of use of Information and Communication Technologies. The case of the students of the Universidad de Santander (Valledupar, Colombia)
(Cartagena de Indias, 2019-10-30)This research establishes the relationship that has had the development of the skills of scientific reasoning and the patterns of use of tools and resources of information and communication technology (ICT). For that, it ... -
Power quality detection and classification using wavelet and support vector machine
(Cartagena de Indias, 2019-09-24)This work presents the identification and classification of various disturbances that affect the quality of energy, seen as the quality of the voltage wave (harmonics, sag, swell and flicker). For this, the wavelet transform ... -
Toward the generation of reproducible synthetic surface data in optical metrology
(Cartagena de Indias, 2020-05-19)The implementation and generation of synthetic data for testing algorithms in optical metrology are often difficult to reproduce. In this work, we propose a framework for the generation of reproducible synthetic surface ... -
State-of-the-art green roofs: Technical performance and certifications for sustainable construction
(Cartagena de Indias, 2020-01-13)Green roof systems, a technology which was used in major ancient buildings, are currently becoming an interesting strategy to reduce the negative impact of traditional urban development caused by ground impermeabilization. ... -
SPUD: Simultaneous phase unwrapping and denoising algorithm for phase imaging
(Cartagena de Indias, 2020-05-01)Recent methods for phase unwrapping in the presence of noise include denoising algorithms to filter out noise as a preprocessing stage. However, including a denoising stage increases the overall computational complexity ... -
Power flow solution in direct current grids using the linear conjugate gradient approach
(Cartagena de Indias, 2019-09-24)The Colombian power system is being modified by the large-scale integration of renewable energy resources and energy storage systems, in conjunction with the microgrid concept that originates the possibility of 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.