Productos de investigación: Envíos recientes
Mostrando ítems 761-780 de 1398
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Accurate and efficient derivative-free three-phase power flow method for unbalanced distribution networks
(Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2021-05-27)The power flow problem in three-phase unbalanced distribution networks is addressed in this research using a derivative-free numerical method based on the upper-triangular matrix. The upper-triangular matrix is obtained ... -
Dynamic reactive power compensation in power systems through the optimal siting and sizing of photovoltaic sources
(Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2021-05-11)The problem of the optimal placement and sizing of photovoltaic power plants in electrical power systems from high- to medium-voltage levels is addressed in this research from the point of view of the exact mathematical ... -
Passivity-based control of islanded microgrids with unknown power loads
(Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2020-10-12)In this paper, the control problem of microgrids (MGs)operating in islanded mode is approached from a passivity-based control perspective. A control scheme is proposed that, relying only on local measurements for the power ... -
Soft-computing approaches for rescheluding problems in a manufacturing industry
(Cartagena de Indias, 2020-03-02)Flexible manufacturing systems as technological and automated structures have a high complexity for scheduling. The decision-making process is made difficult with interruptions that may occur in the system and these problems ... -
Diseño de un sistema integrado de gestión de la calidad para programas académicos de educación superior en Colombia
(Cartagena de Indias, 2020-04-29)En esta investigación se propone un sistema integrado de gestión de la calidad considerando las exigencias legales, la norma ISO 9001 y los lineamientos para acreditación de alta calidad para programas académicos de ... -
A linearized approach for the electric light commercial vehicle routing problem combined with charging station siting and power distribution network assessment
(Cartagena de IndiasCampus Tecnológico, 2021-05-21)Transportation electrification has demonstrated a significant position on power utilities and logistic companies, in terms of assets operation and management. Under this context, this paper presents the problem of seeking ... -
Libertad y oportunidad. Consideraciones sobre justicia distributiva en Amartya Sen y Philippe Van Parijs.
(Cartagena de Indias, 2020-08-06)El presente ensayo tiene como propósito una aproximación a las concepciones de la justicia distributiva en dos economistas contemporáneos: Amartya Sen y Philippe Van Parijs. Para tal fin, se aborda de forma transversal la ... -
On some families of subsemigroups of a numerical semigroup
(Cartagena de Indias, 2020-04-07)To a given numerical semigroup S we associate a family of subsemigroups {휕nS}, n ∈ ℕ, that permits us to understand some of the structure of S. We characterize this family in case S is a supersymmetric numerical semigroup ... -
Detection of Sociolinguistic Features in Digital Social Networks for the Detection of Communities
(Cartagena de Indias, 2020-03-13)The emergence of digital social networks has transformed society, social groups, and institutions in terms of the communi cation and expression of their opinions. Determining how language variations allow the detection of ... -
Thermoplastic Starch (TPS)/Polylactic Acid (PLA) Blending Methodologies: A Review
(Cartagena de IndiasCampus TecnológicoIngeniería Mecánica, 2021-06-17)Polylactic acid (PLA) and thermoplastic starch (TPS) are biodegradable polymers of biological origin, and the mixture of these polymers has been studied due to the desirable mechanical properties of PLA and the low processing ... -
La participación política como resistencia: el caso de la Agencia de Derechos Humanos en Montes de María, Colombia
(Cartagena de IndiasCampus TecnológicoCiencia Política y Relaciones Internacionales, 2019-05)La participación significa para las víctimas del conflicto armado en Colombia una apuesta por la agencia creativa para la reparación de los derechos vulnerados por el conflicto. Este trabajo presenta los resultados del ... -
Las cooperativas rurales: una oportunidad para repensar el rol del Estado frente a los impactos de la regulación de semillas en Colombia
(Cartagena de Indias, 2020-09-09)El presente artículo analiza los diversos factores que inciden en la situación de vulnerabilidad en el que se encuentra el sector rural en Colom bia, la cual se ha visto reforzada por el régimen de certificación de semillas ... -
Implementación de un plan anual de metas para la mejora de la producción científica en una universidad colombiana. Aspectos positivos y negativos
(Cartagena de Indias, 2020-07-07)Se presenta en la siguiente investigación un análisis descriptivo pormenorizado de la producción científica de alto impacto (definida ésta como toda investigación indexada en la base de datos Scopus) de una universidad ... -
El enfoque cultural del desarrollo y los derechos culturales como propuesta para la redimensión de la reparación colectiva
(Cartagena de IndiasCampus Tecnológico, 2020-05-18)Otorgar una importancia superficial a lo cultural en el marco de la reparación colectiva, particularmente a las afectaciones causadas en este ámbito a grupos y comunidades de víctimas, puede generar serias repercusiones ... -
Voltage Stability Analysis in Medium-Voltage Distribution Networks Using a Second-Order Cone Approximation
(Cartagena de Indias, 2020-11-02)This paper addresses the voltage stability margin calculation in medium-voltage distribution networks in the context of exact mathematical modeling. This margin calculation is performed with a second-order cone (SOCP) ... -
Modelling of asphalt pavement structures for different design conditions on roads in Northern Colombia
(Cartagena de Indias, 2020)The purpose of this manuscript is to present a collection of data showing the different variables involved in the design of asphalt pavements, obtained from 84 road sectors located in urban and rural roads in the department ... -
Optimal Design of Transmission Shafts Using a Vortex Search Algorithm
(Cartagena de Indias, 2021-01-02)This paper analyzes the problem of optimally sizing a transmission shaft via the vortex search algorithm (VSA) optimizer. The objective function was to minimize the shaft weight through an adequate selection of the diameters ... -
A hybrid approach based on socp and the discrete version of the sca for optimal placement and sizing dgs in ac distribution networks
(Cartagena de Indias, 2020-12-27)This paper deals with the problem of the optimal placement and sizing of distributed generators (DGs) in alternating current (AC) distribution networks by proposing a hybrid master–slave optimization procedure. In the ... -
Toward an adaptive protection scheme in active distribution networks: Intelligent approach fault detector
(Cartagena de Indias, 2021-01)Conventional protection schemes have proven insufficient for the protection of Active Distribution Networks (ADN). Novel protection schemes with an adaptive approach should be developed to guarantee the protection of ADN ... -
Performance evaluation of structures with reinforced concrete columns retrofitted with steel jacketing
(Cartagena de Indias, 2021-01)Several existing reinforced concrete (RC) buildings fail to conform with current seismic codes, increasing its susceptibility to damage and collapse during earthquakes. A concern for building upgrading and rehabilitation ...
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.