Listar Investigaciones por título

Mostrando ítems 624-643 de 1388

    • Generalized molecular descriptors derived from event-based discrete derivative 

      Martínez-Santiago O.; Cabrera R.M.; Marrero-Ponce Y.; Barigye S.J.; Le-Thi-Thu H.; Torres, Javier; Zambrano C.H.; Yaber Goenaga, Iván; Cruz-Monteagudo, M.; López Y.M.; Giménez F.P.; Torrens, F. (Bentham Science Publishers B.V., 2016)
      In the present study, a generalized approach for molecular structure characterization is introduced, based on the relation frequency matrix (F) representation of the molecular graph and the subsequent calculation of the ...

    • Generating density maps for convolutional neural network-based cell counting in specular microscopy images 

      Sierra, J S; Pineda, J; Viteri, E; Tello, Alejandro; Millán, M S; Galvis, V; Romero, L A; Marrugo Hernández, Andrés Guillermo (Cartagena de Indias, 2020)
      Accurate endothelial cell density with specular microscopy is essential for correct clinical assessment of the cornea. Commercial specular microscopes incorporate automated cell segmentation methods to estimate cell density. ...

    • Generating dynamic fuzzy models for prediction problems 

      Contreras J.; Acuña O. (2009)
      In this paper we present a new method to generate interpretable fuzzy systems from training data. A fuzzy system is developed for nonlinear systems modeling and for system state forecasting. The antecedent partition uses ...

    • Generational diversity and quality of work life: Case study in the Colombian logistic sector 

      Martínez-Buelvas L.; Jaramillo-Naranjo O.; Oviedo-Trespalacios O. (International Business Information Management Association, IBIMA, 2019)
      Drawing upon generational differences in work values and attitudes, this article examines perception of quality of work life of three generational cohorts using survey data collected from 522 employees of the logistic ...

    • Generative Adversarial Networks for Cell Segmentation in Human Corneal Endothelium 

      Mendoza, Kevin D.; Sierra, Juan S; Tello, Alejandro; Galvis, Virgilio; Romero, Lenny A.; Marrugo, Andrés G. (Cartagena de Indias, 2022)
      We generate synthetic images with a generative adversarial network (GAN) model trained with image patches from specular microscopy corneal endothelial cells. Preliminary results show it may be a suitable approach for ...

    • Genericity of Continuous Maps with Positive Metric Mean Dimension 

      Muentes Acevedo, Jeovanny (Cartagena de Indias, 2021-11-02)
      M. Gromov introduced the mean dimension for a continuous map in the late 1990’s, which is an invariant under topological conjugacy. On the other hand, the notion of metric mean dimension for a dynamical system was introduced ...

    • Genericity of Homeomorphisms with Full Mean Hausdorff Dimension 

      Muentes Acevedo, Jeovanny de Jesus (Cartagena de IndiasCampus Tecnológico, 2024-04-18)
      It is well known that the presence of horseshoes leads to positive entropy. If our goal is to construct a continuous map with infinite entropy, we can consider an infinite sequence of horseshoes, ensuring an unbounded ...

    • Genetic Advances in Post-traumatic Stress Disorder 

      Guillén-Burgos H.F.; Gutiérrez-Ruíz, Karol (Elsevier Doyma, 2018)
      Post-traumatic stress disorder, or PTSD, is a condition that affects a subgroup of individuals that have suffered a previous traumatic event capable of generating changes at a psychological and behavioural level. These ...

    • Genetic diversity of Rhizoctonia solaniAG-3PT, the etiological cause of stem canker and black scurf in Colombian potatoes 

      Chavarro Mesa, Edisson; Herrera-Blanco, Néstor Andrés; Beltrán-Acosta, Camilo Rubén; Cotes-Prado, Alba Marina; Ángel-Díaz, Jorge Evelio (Cartagena de Indias, 2021-10-18)
      Stem canker and black scurf are potato diseases caused by the fungus Rhizoctonia solani, anastomosisgroup 3 (AG-3PT). This fungus affects potato roots, stems, and tubers, reducing crop yields. This study aimsto determine ...

    • Genetic-convex model for dynamic reactive power compensation in distribution networks using D-STATCOMs 

      Montoya, Oscar Danilo; Chamorro, Harold R.; Alvarado-Barrios, Lázaro; Gil-González, Walter; Orozco-Henao, César (Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2021-04-21)
      This paper proposes a new hybrid master–slave optimization approach to address the problem of the optimal placement and sizing of distribution static compensators (D-STATCOMs) in electrical distribution grids. The optimal ...

    • Gestión de residuos con estrategia de circularidad para el desarrollo sostenible, en la ciudad de Cartagena / 

      Fuentes Ojeda, Mayra E. , autor.; Pabón, Claudia, tutor. (2020)
      En este artí­culo se analiza la composición y formas de manejo en casa asociadas a los Residuos Sólidos Urbanos (RSU) a efecto de establecer caminos para fortalecer capacidades en las comunidades que permitan desarrollar ...

    • Género y vacunación contra el VPH en Colombia: cuando la política pública hace daño 

      Baltar-Moreno, Adolfo; Puello-Sarabia, Cielo Patricia (Cartagena de IndiasCampus TecnológicoComunicación Social, 2022-03-17)
      Desde el año 2014, centenares de niñas y mujeres adolescentes de un municipio rural de Colombia desarrollaron una enfermedad de etiología desconocida que atribuyeron a una campaña de vacunación escolar contra el Virus del ...

    • Girls Do Not Sweat: the Development of Gender Stereotypes in Physical Education in Primary School 

      Cárcamo Vergara, Carolina; Moreno, Amparo; Del Barrio, Cristina (Cartagena de Indias, 2020-06-27)
      Despite efforts towards gender equality, from an early age, girls practice sport less than boys. Explaining this is paramount to psychology. Stereotypes about gender-appropriate behaviour play a key role in doing physical-sports ...

    • Global Optimal Stabilization of MT-HVDC Systems: Inverse Optimal Control Approach 

      Montoya, Oscar Danilo; Gil-González, Walter; Martin Serra, Federico; De Angelo, Cristian Hernan; Hernández, Jesus C. (Cartagena de Indias, 2021-11-17)
      The stabilization problem of multi-terminal high-voltage direct current (MT-HVDC) systems feeding constant power loads is addressed in this paper using an inverse optimal control (IOC). A hierarchical control structure ...

    • Global stabilization of a reaction wheel pendulum: A discrete-inverse optimal formulation approach via a control lyapunov function 

      Montoya, Oscar Danilo; Gil-González, Walter; Domínguez Jiménez, Juan Antonio; Molina-Cabrera, Alexander; Giral-Ramírez, Diego Armando (Cartagena de Indias, 2020-10-26)
      This paper deals with the global stabilization of the reaction wheel pendulum (RWP) in the discrete-time domain. The discrete-inverse optimal control approach via a control Lyapunov function (CLF) is employed to make the ...

    • GridUI, a RESTful web service and ubiquitous UI for accessing HPC resources 

      Serrano J.E.; Leguizamon J.; Martínez-Santos, Juan Carlos (Institute of Electrical and Electronics Engineers Inc., 2016)
      This paper describes the design of a user interface between a high-throughput computing pool system like HTCondor and a device-independent user interface. This design aims to bring parallel tools and resources to a novel ...

    • Group-Theory for the Analysis of Heuristic Algorithms in Power Distribution Systems 

      Garces A.; Gil-González, Walter; Castano J.; Montoya O.D. (Institute of Electrical and Electronics Engineers Inc., 2018)
      This paper applies group theory to four classic problems in power distribution systems, namely: phase balancing, primary feeder reconfiguration, optimal tap setting of voltage regulator transformers and optimal placement ...

    • Guidance and support of women in engineering programs at Universidad Tecnologica de Bolivar 

      Contreras-Ortiz, Sonia H.; Ojeda-Caicedo, Vilma V.; Villa, J.L.; Duncan-Ortega, Ericka (Cartagena de Indias, 2023)
      Gender equality is one of the sustainable development goals. In STEM areas, it is a requirement to expand and improve women's careers. To increase the participation of women in STEM it is not enough to attract more young ...

    • H2 controller design on engine rotor rotation 

      Ramírez, V C A; Grisales-Noreña L.F.; Montoya, O D (Cartagena de Indias, 2020)
      This article exposes the implementation of the H2 controller, which is rare in the literature because it is a more robust control and not only errors but also disturbances that can affect the dynamics of the control system ...

    • Hand anthropometric study in northern Colombia 

      Oviedo-Trespalacios O.; Martínez Buelvas, Laura; Hernández J.; Escobar J. (Taylor and Francis Ltd., 2017)
      The main purpose of this study is to gather information about the dimensions of the northern Colombian (Caribbean region) population, focusing on the dimensions of the hand and comparing them with measurements from other ...

      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.