Listar por tema "LEMB"

Mostrando ítems 201-220 de 630

    • Convergence analysis of the triangular-based power flow method for AC distribution grids 

      Herrera, María Camila; Montoya, Oscar Danilo; Molina-Cabrera, Alexander; Grisales-Noreña, Luis Fernando; Giral-Ramírez, Diego Armando (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 

      Vargas-Chaves, Iván; Acevedo-Caicedo, Francisco; Salgado-Figueroa, Eduardo (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 ...

    • Corneal endothelium assessment in specular microscopy images with Fuchs’ dystrophy via deep regression of signed distance maps 

      Sierra, Juan S.; Pineda, Jesus; Rueda, Daniela; Tello, Alejandro; Prada, Angélica M.; Galvis, Virgilio; Volpe, Giovanni; Millan, Maria S.; Romero, Lenny A.; Marrugo, Andres G. (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 ...

    • Cost estimation guidelines for private architectural projects, based on a single classification model 

      Castillo, Manuel; Padrón, Raúl; Gualdrón, Carlos (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 

      Morales Zamora, Gilberto Andres; Espinosa, Oscar; Puertas, Edwin; Fernández, Juan Carlos; Hernández, José; Zakzuk, Verónica; Cepeda, Magda; Alvis Guzmán, Nelson; Castañeda-Orjuela, Carlos; Paternina, Angel (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 

      Arias, Fabián; Borja, Jerson; Rubio, Luis (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 

      Alzate-Grisales, Jesús Alejandro; Mora-Rubio, Alejandro; Arteaga-Arteaga, Harold Brayan; Bravo-Ortiz, Mario Alejandro; Arias-Garzón, Daniel; López-Murillo, Luis Humberto; Mercado-Ruiz, Esteban; Villa-Pulgarin, Juan Pablo; Cardona-Morales, Oscar; Orozco-Arias, Simon; Buitrago-Carmona, Felipe; Palancares-Sosa, Maria Jose; Martínez-Rodríguez, Fernanda; Contreras-Ortiz, Sonia H.; Saborit-Torres, Jose Manuel; Montell Serrano, Joaquim Ángel; Ramirez-Sánchez, María Mónica; Sierra-Gaber, ario Alfonso; Jaramillo-Robled, Oscar; de la Iglesia-Vayá, Maria; Tabares-Soto, Reinel (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 

      Zhou, Xiaoyu; Scott English, Alexander; Kulich, Steve J.; Zheng, Lu; Alves, Tales; Aquino, Sibele D.; Batić Očovaj, Sanja; Belen, Hacer; Biddle, Ashley; Boonroungru, Chinun; Licoa Campos, Adolfo Fabricio; Castro, Rita; Chettiar, Cicilia; Chobthamkit, Phatthanakit; Cowden, Richard G.; Dubrov, Dmitrii; Falavarjan, Mehrdad F.; Grigoryev, Dmitry; Hofhuis, Joep; Jiang, Huang; Jovanović, Veljko; Klimek-Tulwin, Monika; Kunst, Jonas R.; Lefringhausen, Katharina; Li, Xiaoyuan; Lins, Samuel; Malik, Sadia; Maricchiolo, Fridanna; Martínez-Buelvas, Laura; Nam, Benjamin H.; Navarro-Carrillo, Ginés; Pereira Neto, Jose Candido; Oliver, Eliza; Paolini, Daniele; Šakan, Dušana; Schwarzenthal, Miriam; Sun, Qian; Talhelm, Thomas; Thomson, Robert; Tipandjan, Arun; Tong, Rongtian; Torres-Marín, Jorge; Wei, Liuqing; Lan Yeung, Victoria Wai; Yuki, Masaki (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 

      Medina-Hernández, Edith-Johana; Barco-Llerena, Evelin; Villalba-Acevedo, Jorge-Luis (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 ...

    • Crack Formation in Chill Block Melt Spinning Solidification Process: A Comparative Analysis Using OpenFOAM 

      Pagnola, Marcelo; Barceló, Luis Francisco; Useche Vivero, Jairo (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 ...

    • Creation of business profiles of exporting companies through unsupervised learning 

      de la Hoz-Dominguez, Enrique J.; Escorcia-Guzman, Adalberto; Fontalvo-Herrera, Tomás J (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 ...

    • Creatividad y gestión del conocimiento: Herramientas para la creación de valor empresarial 

      Castro Porto, Martha (Cartagena de IndiasCampus Tecnológico, 2024-04-08)
      La gestión del conocimiento abarca una serie de procesos y prácticas diseñadas para identificar, capturar, almacenar, compartir y aplicar el conocimiento de manera efectiva en toda la organización. Dicho de otra forma, se ...

    • Cultural damage and reparation of victims in the Colombian armed conflict. The case of the black peasant community of San Cristóbal (Montes de María – Colombia) 

      Espinosa Espinosa, Aarón; Alvis Arrieta, Jorge Luis; Ruz Rojas, Gina (Cartagena de Indias, 2021-05-16)
      The aim of this study is to identify and analyze the cultural damage caused by the armed conflict in the black peasant community of San Cristóbal, in Montes de María, one of the regions most affected by the prolonged ...

    • Culturas digitales de la memoria en redes sociales a través de la fotografía 

      Baltar-Moreno, Adolfo (Cartagena de IndiasCampus TecnológicoComunicación Social, 2023-04)
      Entre sus múltiples usos culturales y ciudadanos, las redes sociales digitales del siglo XXI han sido empleadas como “lieux de mémoire”, término creado por el historiador Pierre Nora para designar aquellos espacios ...

    • Un curso de matemáticas financieras 

      Cárdenas Escobar, Alba Zulay (Cartagena de IndiasCampus TecnológicoAdministración de Empresas, 2024-02-16)
      Este libro va de lo básico a lo complejo, iniciando primero con los conceptos que soportan las matemáticas financieras: valor del dinero en el tiempo y su evidencia a través del interés y las tasas de interés, equivalencia ...

    • Cyberattacks Predictions Workflow using Machine Learning 

      Barrera Pérez, Carlos Eduardo; Serrano, Jairo E.; Martinez-Santos, Juan Carlos (Cartagena de Indias, 2021)
      This research aims to validate the effectiveness of a machine learning model composed of three classifiers: decision tree, logistic regression, and support vector machines. Through the design of a workflow, we demonstrate ...

    • Data-driven framework for the detection of non-technical losses in distribution grids 

      De la Hoz Domínguez, Enrique José; Rivera, A.; Botina, K.; Perdomo, G.A; Montoya, O.; Campillo Jiménez, Javier Eduardo (Cartagena de Indias, 2020-12-24)
      Non-technical losses (NTL) occurring in the electric grid, particularly at the distribution level may cause a negative impact on utilities' interest, paying consumers and states. Reducing NTL can increase revenue, profit, ...

    • Dataset for Sun dynamics from topological features 

      Tarazona Alvarado, Miguel; Sierra Porta, David (Cartagena de Indias, 2023-11-17)
      The present study presents an extensive dataset meticulously curated from solar images sourced from the Solar and Heliospheric Observatory (SOHO), encompassing a range of spectral bands. This collaborative effort spans ...

    • Dataset of traffic accidents in motorcyclists in Bogotá, Colombia 

      Ospina-Mateus, Holman; Berrio Garcia, Shyrle; Quintana Jiménez, Leonardo Augusto; Salas-Navarro, Katherinne (Cartagena de Indias, 2022-07-05)
      According to the World Health Organization, in 2016, Colombia obtained the tenth position worldwide, the third in the continent and the second in South America, according to the accident rate of 9.7 motorcycle fatalities ...

    • Deep learning architectures for the analysis and classification of brain tumors in MR images 

      Osorio-Barone, A.; Contreras Ortiz, Sonia Helena (Cartagena de Indias, 2020-11-03)
      The need to make timely and accurate diagnoses of brain diseases has posed challenges to computer-aided diagnosis systems. In this field, advances in deep learning techniques play an important role, as they carry out ...

      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.