Now showing items 296-315 of 693

    • Fuzzy logic methodology to study the behavior of energy transformation processes based on statistics T2and Q 

      Cárdenas, Y; Carrillo, G E; Alviz, A; Carrillo, G (Cartagena de Indias, 2020-10)
      In the processes of energy transformation, to carry out an adequate follow-up of the process parameters represent an opportunity to propose strategies to improve the processes' performance. For this reason, it is essential ...
    • 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.; Javier Torres F.; Zambrano C.H.; Yaber-Goenag I.; 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, A; Millán, M S; Galvis, V; Romero, L A; Marrugo, A G (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 ...
    • Genetic Advances in Post-traumatic Stress Disorder 

      Guillén-Burgos H.F.; Gutiérrez-Ruiz K. (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-convex model for dynamic reactive power compensation in distribution networks using D-STATCOMs 

      Montoya, Oscar Danilo; Chamorro, Harold R.; Alvarado-Barrios, Lazaro; 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 ...
    • Global stabilization of a reaction wheel pendulum: A discrete-inverse optimal formulation approach via a control lyapunov function 

      Montoya, Oscar Danilo; Gil-González, Walter; Dominguez-Jiménez, Juan A.; Molina-Cabrera, Alexander; Giral-Ramírez, Diego A. (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.; Martinez-Santos J.C. (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-Gonzalez W.; 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 ...
    • 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 L.; 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 ...
    • Harmonic analysis of shear deformable orthotropic cracked plates using the Boundary Element Method 

      Useche J.; Albuquerque E.L.; Sollero P. (2012)
      In this work, the modal and harmonic analysis of orthotropic shear deformable cracked plates using a direct time-domain Boundary Element Method formulation based on the elastostatic fundamental solution of the problem is ...
    • Heuristic approach for optimal location and sizing of distributed generators in AC distribution networks 

      Bocanegra S.Y.; Montoya O.D. (World Scientific and Engineering Academy and Society, 2019)
      This paper addresses, from a heuristic point of view, the problem of the optimal location and sizing of distributed generators (DGs) in alternating-current distribution networks with radial topology. A master–slave ...
    • Heuristic Methodology for Planning AC Rural Medium-Voltage Distribution Grids 

      Montoya, Oscar Danilo; Serra, Federico Martin; De Angelo, Cristian Hernan; Chamorro, Harold R.; Alvarado-Barrios, Lazaro (Cartagena de Indias, 2021-08-20)
      The optimal expansion of AC medium-voltage distribution grids for rural applications is addressed in this study from a heuristic perspective. The optimal routes of a distribution feeder are selected by applying the concept ...
    • Hexagonal filters for ultrasound images 

      Contreras-Ortiz S.H.; Fox M.D. (2014)
      Most of the devices for acquisition and display of medical images use rectangular lattices even though there are other sampling strategies that can be more efficient in terms of resolution. This paper proposes an approach ...
    • Hierarchical agglomerative clustering of time-warped series 

      Kotas M.; Leski J.; Moroń T.; Guzmán J.G. (Springer Verlag, 2018)
      We have developed a procedure for hierarchical agglomerative clustering of time series data. To measure the dissimilarity between these data, we use classically the Euclidean distance or we apply the costs of the series ...
    • Higher-order kinematic analyses of a planar parallel robot based on screw theory 

      Rodelo, M; Villa, J L; Yime, E (Cartagena de Indias, 2020)
      This paper presents the higher-order kinematic analyses of a planar parallel robot, addressed by means of the theory of screws. The reduced velocity, acceleration, jerk and hyper-jerk state for the end-effector of robot ...
    • Highly compact surface micromachined metamaterial circuits using multilayers of low-loss Benzocyclobutene for microwave and millimeter wave applications 

      Eliecer Sr. D.; Cheng X.; Yoon Y.-K. (2012)
      This work explores the implementation of highly compact three dimensional (3D) integrable metamaterial based transmission lines on a low resistivity CMOS grade silicon substrate for microwave and millimeter wave applications. ...
    • Hilo lector: introducción 

      (Universidad Tecnológica de Bolívar. Facultad de Ciencias Sociales y Humanidades. Programa de Comunicación social (Cartagena de IndiasCampus TecnológicoComunicación Social, 2020-01-28)
      Una serie de podcasts para estimular la lectura entre los estudiantes del programa de Comunicación Social y la Facultad de Ciencias sociales y Humanidades. Con nuestro Hilo se ha tejido una colección de lecturas de clásicos ...