Productos de investigación: Envíos recientes
Mostrando ítems 941-960 de 1398
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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 ... -
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 ... -
Learning styles for algebra concepts: The case of engineering students at the Universidad de Santander (Valledupar, Colombia)
(Cartagena de Indias, 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
(Cartagena de IndiasEconomía, 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
(Cartagena de IndiasIngeniería 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
(Cartagena de IndiasIngeniería 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 ... -
Influence of family and pedagogical communication on school violence
(Cartagena de IndiasComunicación Social, 2020-04-04)School violence alludes to peer bullying and aggression in school. The field of communication has studied school violence by analyzing the influence of media and interpersonal relationships on aggressive behaviors. This ... -
Infection parameters of Heterorhabditis amazonensis (Nematoda: Heterorhabditidae) in different stages of Hibiscus pink mealybug
(Cartagena de Indias, 2020)The pink hibiscus mealybug Maconellicoccus hirsutus (Hemiptera: Pseudococcidae) is an invasive pest of an enormous variety of crops and has become a concern in many parts of the world. Early attempts to control M. hirsutus ... -
Del biocentrismo a la seguridad humana: un enfoque en el marco del reconocimiento del páramo de Pisba como sujeto de derechos
(Cartagena de Indias, 2020-01)This paper discusses the status of mining operations vis-a-vis nature as a subject of rights to the extent that they represent a serious threat not only to the fauna and flora in the areas where mining takes place but also ... -
Evaluation of service quality by means of six sigma in a center of documentary attention in a university
(Cartagena de IndiasIngeniería Industrial, 2020)Esta investigación propone un método de evaluación de la calidad del servicio en un centro de atención documental en una universidad. Desde un enfoque cuantitativo y racional se estableció un método fundamentado en las ... -
Evaluation of semi-intensive green roofs with drainage layers made out of recycled and reused materials
(Cartagena de IndiasCampus TecnológicoIngeniería Mecánica, 2020-05-29)Green roof systems represent an opportunity to mitigate the effect of natural soil loss due to the development of urban infrastructure, which significantly affects natural processes such as the hydrological water cycle. ... -
Ethnicity, space and human development in poor urban communities: Commune 6 in cartagena de indias, Colombia
(Campus TecnológicoEconomía, 2020-07)Cartagena de Indias has the highest social exclusion among the main cities in Colombia. This paper evaluates human development and the determinants of poverty in the commune 6, where the Afro-Colombian population predominates. ... -
Economic dispatch of renewable generators and BESS in DC microgrids using second-order cone optimization
(Campus TecnológicoIngeniería Eléctrica, 2020-04-03)A convex mathematical model based on second-order cone programming (SOCP) for the optimal operation in direct current microgrids (DCMGs) with high-level penetration of renewable energies and battery energy storage systems ... -
Direct power compensation in AC distribution networks with SCES systems via PI-PBC approach
(Campus TecnológicoIngeniería Eléctrica, 2020-04-23)Here, we explore the possibility of employing proportional-integral passivity-based control (PI-PBC) to support active and reactive power in alternating current (AC) distribution networks by using a supercapacitor energy ... -
Diagnóstico de las organizaciones solidarias del sector artístico-cultural en Córdoba y Sucre
(Administración de Empresas, 2020)Este estudio desde las industrias creativas y de economía solidaria, tuvo como objetivo diagnosticar las organizaciones solidarias artístico-culturales en los departamentos de Colombia, Córdoba y Sucre; para lo cual se ... -
Dataset of academic performance evolution for engineering students
(Campus TecnológicoIngeniería Industrial, 2020-04-18)This data article presents data on the results in national as- sessments for secondary and university education in engineering students. The data contains academic, social, economic information for 12,411 students. The ... -
Competitiveness in Insular Regions: Case of Isla Grande in the Archapelago of Islas Del Rosario, Cartagena, Colombia
(Campus TecnológicoEconomía, 2020-05-11)This article is based on a study whose objective was focused on identifying the variables and key actors with the greatest impact on the competitiveness of a large island in the island region of the Rosario Islands in ... -
Application of artificial neural network and information entropy theory to assess rainfall station distribution: A case study from Colombia
(Campus TecnológicoIngeniería Electrónica, 2020-07-12)An assessment of the rainfall station distribution in the mountainous area of the Regional Autonomous Corporation of Cundinamarca (CAR, for its acronym in Spanish), Colombia, was conducted by applying concepts from information ... -
State-of-the-art active optical techniques for three-dimensional surface metrology: a review [Invited]
(Campus TecnológicoIngeniería Mecatrónica, 2020)This paper reviews recent developments of non-contact three-dimensional (3D) surface metrology using an active structured optical probe. We focus primarily on those active non-contact 3D surface measurement techniques that ... -
A chronological literature review of electric vehicle interactions with power distribution systems
(Campus TecnológicoIngeniería Electrónica, 2020-06-11)In the last decade, the deployment of electric vehicles (EVs) has been largely promoted. This development has increased challenges in the power systems in the context of planning and operation due to the massive amount of ...
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.