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Mostrando ítems 350-369 de 1433
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Controller design for VSCs in distributed generation applications: An IDA-PBC approach
(Institute of Electrical and Electronics Engineers Inc., 2019)This paper presents an asymptotically stable global controller design for distributed energy integration in electrical distribution networks using a three-phase voltage source converter (VSC). An invariant Park's transformation ... -
Conventional and advanced exergetic analysis for the combined cycle of power plant with gas turbine of a refinery
(Cartagena de Indias, 2021-11-01)This article shows the results of the performance study of a combined cycle plant made up of a Siemens STG-800 gas turbine and a MACCHI heat recovery boiler (HRSG) designed to produce 47.5 MW of electricity and 81908 kg / ... -
Conventional and advanced exergoeconomic indicators of a nitric acid production plant concerning the cooling temperature in compression Train’s intermediate stages
(Cartagena de Indias, 2021-07-30)In the refining and petrochemical industrial sector, large amounts of energy are used, so using the concept of exergy allows a rational use of this resource. In the different exergy and exergoeconomics studies applied in ... -
Convergence analysis of the triangular-based power flow method for AC distribution grids
(Cartagena de Indias, 2021-06-30)This paper addresses the convergence analysis of the triangular-based power flow (PF) method in alternating current radial distribution networks. The PF formulation is made via upper-triangular matrices, which enables ... -
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, 2020-11-11)El presente artículo analiza los diversos factores que inciden en la situación de vulnerabilidad en el que se encuentra el sector rural en Colombia, la cual se ha visto reforzada por el régimen de certificación de semillas ... -
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 ... -
Corneal endothelium assessment in specular microscopy images with Fuchs’ dystrophy via deep regression of signed distance maps
(Cartagena de Indias, 2023)Specular microscopy assessment of the human corneal endothelium (CE) in Fuchs’ dystrophy is challenging due to the presence of dark image regions called guttae. This paper proposes a UNet-based segmentation approach that ... -
Corporation income taxes and the cost of capital: A revision
(2012)The value of debt tax shields in foundational corporate valuation models by Nobel Laureates Modigliani and Miller (MM) continues to be a controversial issue that is central to our understanding of corporate finance. Rather ... -
Corrosion failure assessment on AISI 310s steel used as support of refractory concrete panels in a clinker cooler
(Universidad Simon Bolivar, 2016)This article presents the corrosion failure assessment on AISI 310 Steel, used as support of refractory concrete panels in a Clinker cooler under a combination of high temperatures and atmospheres with high concentration ... -
Cost estimation guidelines for private architectural projects, based on a single classification model
(Cartagena de Indias, 2020) -
Cost-Effectiveness Analysis of Strategies of COVID-19 Vaccination in Colombia: Comparison of High-Risk Prioritization and No Prioritization Strategies With the Absence of a Vaccination Plan
(Cartagena de Indias, 2022-05-26)Objectives: Our study compares two national COVID-19 vaccination plan strategies—high-risk prioritization and no prioritization—and estimates their cost-effectiveness compared with no vaccination, to generate possible ... -
Counting integers representable as images of polynomials modulo n
(Cartagena de Indias, 2019)Given a polynomial f(x1,x2,…,xt) in t variables with integer coefficients and a positive integer n, let α(n) be the number of integers 0 ≤ a < n such that the polynomialcongruencef(x1,x2,…,xt) ≡ a(modn)issolvable. ... -
Cov-caldas: A new COVID-19 chest X-Ray dataset from state of Caldas-Colombia
(Cartagena de Indias, 2022)The emergence of COVID-19 as a global pandemic forced researchers worldwide in various disciplines to investigate and propose efficient strategies and/or technologies to prevent COVID-19 from further spreading. One of the ... -
COVID-19 cases correlate with greater acceptance coping in flexible cultures: A cross-cultural study in 26 countries
(Cartagena de IndiasCampus TecnológicoIngeniería Industrial, 2023-11-04)The current study examines whether the prevalence of COVID-19 cases and cultural flexibility correlate to one's use of acceptance coping across 26 cultures. We analyzed data from 7476 participants worldwide at the ... -
COVID-19 Preparedness and Response by Global South and Global North Countries: A Comparative Analysis
(Cartagena de Indias, 2022)Comparing the countries’ level of preparedness and response to the Covid-19 pandemic involves the assessment of human development, health, connectivity and death rate indicators. In this study, information published by the ... -
Cómo informaron los medios colombianos sobre la covid-19: una mirada desde las audiencias
(Cartagena de IndiasCampus TecnológicoComunicación Social, 2024-07-23)La declaración del estado de pandemia de covid-19 en Colombia en marzo de 2020 disparó la producción y consumo de noticias relacionadas con el tema. Este estudio, mediante una encuesta en línea, analizó las percepciones ... -
Cómo los retos profesionales y personales impactan en el desarrollo de habilidades blandas (soft skills) enfocadas hacia la innovación /
(2020)El presente artículo pretende analizar el impacto que tienen las habilidades blandas enfocadas a la innovación derivadas de los diferentes retos profesionales y personales qué como individuo vivimos a lo largo de nuestra ... -
Crack Formation in Chill Block Melt Spinning Solidification Process: A Comparative Analysis Using OpenFOAM
(Cartagena de Indias, 2022-01-12)The application of FeSiB family magnetic materials in the electrical or electronic industry has significantly increased owing to the development of amorphous and nanocrystalline metallic glasses using melt spinning and ... -
Creating emotional proximity with the environment
(Taylor and Francis, 2017) -
Creation of business profiles of exporting companies through unsupervised learning
(Cartagena de Indias, 2019)This research presents a method for the creation of business profiles of export companies in the city of Barranquilla - Colombia. The method is supported by the development of unsupervised data learning techniques, Principal ...
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.