Browsing Productos de investigación by Title
Now showing items 619-638 of 985
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Narrativas para la emergencia del perdón, la reparación y la reconciliación en víctimas del conflicto armado en Colombia
(Cartagena de Indias, 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 ... -
"Navegando por Cartagena" : una iniciativa turística para el desarrollo local sostenible /
(2020)Cuando las actividades turísticas se desarrollan en un marco en el que se ignoran las implicaciones ambientales, las denominadas externalidades, pueden iniciar un proceso en el cual los factores ambientales, lejos de ser ... -
Network resource mobilisation limitations and the alliance portfolio network
(Cartagena de Indias, 2021-03-11)Purpose –The purpose of this study is to examine how access and mobilisation of network resources influence a firm’s performance. It has been established that alliance portfolio (AP) network parameters shape the access to ... -
Neuro-fuzzy inverse optimal control incorporating a multistep predictor as applied to T1DM patients
(Cartagena de Indias, 2020)Emerging technologies seek to provide effective solutions to the most severe health problems such as type 1 diabetes mellitus (T1DM). In fact, the number of diabetics around the world has increased as well as the mortality ... -
Newman–Janis Ansatz in conformastatic spacetimes
(Springer New York LLC, 2016)The Newman–Janis Ansatz was used first to obtain the stationary Kerr metric from the static Schwarzschild metric. Many works have been devoted to investigate the physical significance of this Ansatz, but no definite answer ... -
Noise-Robust Processing of Phase Dislocations using Combined Unwrapping and Sparse Inpainting with Dictionary Learning
(Institute of Electrical and Electronics Engineers Inc., 2019)The problem of phase unwrapping from a noisy and also incomplete wrapped phase map arises in many optics and image processing applications. In this work, we propose a noise-robust approach for processing regional phase ... -
Nonlinear analysis and control of a reaction wheel pendulum: Lyapunov-based approach
(Elsevier B.V., 2019)This paper presents a nonlinear analysis, control, and comparison of controllers based on the dynamical model of the reaction wheel pendulum (RWP) in a tutorial style. Classical methodologies such as proportional integral ... -
Nonlinear Analysis for the Three-Phase PLL: A New Look for a Classical Problem
(Institute of Electrical and Electronics Engineers Inc., 2018)In this paper we investigate the dynamics of the classic synchronous reference frame phase-locked-loop (PLL) from a non-linear perspective. First, we demonstrate the nonlinear differential equations that describe the PLL ... -
Nonlinear control for a DC–DC converter with dual active bridges in a DC microgrid
(Cartagena de IndiasCampus Tecnológico, 2022-10-29)This work presents a new control strategy for a DC–DC converter with dual active bridges used to interconnect two feeders in a DC microgrid. The proposed control strategy allows regulating the output voltage of the converter ... -
Nonlinear control for battery energy storage systems in power grids
(IEEE Computer Society, 2018)This paper presents a nonlinear control strategy to integrate Battery Energy Storage Systems (BESS) in electrical power systems connected through Voltage Source Converters (VSCs). Exact feedback linearization control ... -
Nonlinear voltage control for three-phase dc-ac converters in hybrid systems: An application of the pi-pbc method
(Cartagena de Indias, 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 ... -
Novel 3D bio-macromolecular bilinear descriptors for protein science: Predicting protein structural classes
(Academic Press, 2015)In the present study, we introduce novel 3D protein descriptors based on the bilinear algebraic form in the ℝn space on the coulombic matrix. For the calculation of these descriptors, macromolecular vectors belonging to ... -
Novel global and local 3D atom-based linear descriptors of the Minkowski distance matrix: theory, diversity–variability analysis and QSPR applications
(Kluwer Academic Publishers, 2015)A new family of alignment-free 3D descriptors based on TOMOCOMD-CARDD framework has been designed, namely 3D-linear indices. In this report, we have proposed the use of a generalized form of the geometric pairwise atom-atom ... -
Numerical Approximation of the Maximum Power Consumption in DC-MGs with CPLs via an SDP Model
(Institute of Electrical and Electronics Engineers Inc., 2019)This brief addresses the numerical approximation of the maximum power consumption in direct-current microgrids (DC-MGs) with constant power loads through a convex optimizing model. The convex formulation is developed via ... -
Numerical methods for power flow analysis in DC networks: State of the art, methods and challenges
(Cartagena de Indias, 2020-12)This study addresses the power-flow-analysis problem for direct-current (DC) grids from a numerical perspective. Classical and emerging algorithms for power flow solutions in DC networks such as Gauss--Seidel, successive ... -
Numerical Simulations of a Polydisperse Sedimentation Model by Using Spectral WENO Method with Adaptive Multiresolution
(World Scientific Publishing Co. Pte Ltd, 2016)In this work, we apply adaptive multiresolution (Harten's approach) characteristic-wise fifth-order Weighted Essentially Non-Oscillatory (WENO) for computing the numerical solution of a polydisperse sedimentation model, ... -
Numerical study of the stress concentration factor in geometries of machine elements using Ansys® and Inventor®
(Cartagena de Indias, 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 ... -
Object-oriented mathematical modeling for estimating electric vehicle’s range using modelica
(Springer Verlag, 2018)Electric vehicles (EVs) offer a great alternative for decarbonizing the transport sector. However, insufficient recharging infrastructure and limited range increase the driver’s ‘range anxiety’. Furthermore, the autonomy ... -
Occurrence of personal care products as emerging chemicals of concern in water resources: A review
(Elsevier B.V., 2017)Personal care products (PCPs) are a diverse group of common household substances used for health, beauty and cleaning purposes. These include disinfectants, fragrances, insect repellents, preservatives and UV filters, among ... -
On classical thermal stability of black holes with a dynamical extrinsic curvature
(Academic Press Inc., 2017)We study the deformation caused by the influence of the extrinsic curvature on a vacuum spherically symmetric metric embedded in a five-dimensional bulk. We investigate the resulting black-holes obtaining general characteristics ...
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.
