Investigaciones: Envíos recientes
Mostrando ítems 1201-1220 de 1422
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Transient dynamic analysis of shear deformable shallow shells using the boundary element method
(Elsevier Ltd, 2015)The complexity involved in the dynamic response of plates brings many challenges from a mathematical standpoint. In this work, the transient dynamic analysis of elastic shallow shells under uniformly distributed pressure ... -
Elastodynamic analysis of thick multilayer composite plates by the Boundary Element Method
(Tech Science Press, 2015)Dynamic stress analysis of laminated composites plates represents a relevant task in designing of aerospace, shipbuilding and automotive components where impulsive loads can lead to sudden structural failure. The mechanical ... -
Reduction of blooming artifacts in cardiac CT images by blind deconvolution and anisotropic diffusion filtering
(SPIE, 2015)Even though CT is an imaging technique that offers high quality images, limitations on its spatial resolution cause blurring in small objects with high contrast. This phenomenon is known as blooming artifact and affects ... -
Thermoeconomic analysis of wheat flour agroindustrial plant
(American Society of Mechanical Engineers (ASME), 2015)This paper presents the development of an exergy and thermoeconomic analysis of a wheat flour agro-industrial plant, which was aimed to evaluate the energy use and establish the operation cost of its components, and to ... -
Kinematic parameter estimation using close range photogrammetry for sport applications
(SPIE, 2015)In this article, we show the development of a low-cost hardware/software system based on close range photogrammetry to track the movement of a person performing weightlifting. The goal is to reduce the costs to the trainers ... -
Conformastationary disk-haloes in Einstein–Maxwell gravity
(Springer New York LLC, 2015)An exact solution of the Einstein–Maxwell field equations for a conformastationary metric with magnetized disk-haloes sources is worked out in full. The characterization of the nature of the energy momentum tensor of the ... -
IMMAN: free software for information theory-based chemometric analysis
(Kluwer Academic Publishers, 2015)Abstract: The features and theoretical background of a new and free computational program for chemometric analysis denominated IMMAN (acronym for Information theory-based CheMoMetrics ANalysis) are presented. This is ... -
Towards better BBB passage prediction using an extensive and curated data set
(Wiley-VCH Verlag, 2015)In the present report, the challenging task of drug delivery across the blood-brain barrier (BBB) is addressed via a computational approach. The BBB passage was modeled using classification and regression schemes on a novel ... -
Optimum search strategies or novel 3D molecular descriptors: Is there a stalemate?
(Bentham Science Publishers B.V., 2015)The present manuscript describes a novel 3D-QSAR alignment free method (QuBiLS-MIDAS Duplex) based on algebraic bilinear, quadratic and linear forms on the kth two-tuple spatial-(dis)similarity matrix. Generalization schemes ... -
Novel 3D bio-macromolecular bilinear descriptors for protein science: Predicting protein structural classes
(Academic Press, 2015)In the present study, we introduce novel 3D protein descriptors based on the bilinear algebraic form in the ℝn space on the coulombic matrix. For the calculation of these descriptors, macromolecular vectors belonging to ... -
Novel global and local 3D atom-based linear descriptors of the Minkowski distance matrix: theory, diversity–variability analysis and QSPR applications
(Kluwer Academic Publishers, 2015)A new family of alignment-free 3D descriptors based on TOMOCOMD-CARDD framework has been designed, namely 3D-linear indices. In this report, we have proposed the use of a generalized form of the geometric pairwise atom-atom ... -
Direct power control of electrical energy storage systems: A passivity-based PI approach
(Elsevier Ltd, 2019)This paper proposes a direct power control for electrical energy storage systems (EESS) in ac microgrids. This strategy allows managing instantaneous active and reactive power without using a conventional inner-loop current ... -
Biocontrol of Phytophthora root and stem rot disease in papaya (Carica papaya) plants by Photorhabdus, the symbiont bacterium of Heterorhabditis amazonensis
(Springer Netherlands, 2019)The effect of two strains of Photorhabdus spp. from Heterorhabditis amazonensis and their metabolites was tested against Phytophthora in laboratory conditions and in planta using papaya plants. The in vitro experiments ... -
Assessing the significance of the correlation between the components of a bivariate Gaussian random field
(John Wiley and Sons Ltd, 2015)Assessing the significance of the correlation between the components of a bivariate random field is of great interest in the analysis of spatial data. This problem has been addressed in the literature using suitable ... -
Design of discrete event systems supported on wireless sensors and actuator networks using colored Petri Nets
(Institute of Electrical and Electronics Engineers Inc., 2015)Manufacturing systems are highly parallel and distributed processes which require a high level of guarantee in operation and safety. Its concurrent and non-deterministic nature makes its analysis and design very complex. ... -
Variational thermodynamics of relativistic thin disks
(Springer New York LLC, 2015)We present a relativistic model describing a thin disk system composed of two fluids. The system is surrounded by a halo in the presence of a non-trivial electromagnetic field. We show that the model is compatible with the ... -
Relational Agreement Measures for Similarity Searching of Cheminformatic Data Sets
(Institute of Electrical and Electronics Engineers Inc., 2016)Research on similarity searching of cheminformatic data sets has been focused on similarity measures using fingerprints. However, nominal scales are the least informative of all metric scales, increasing the tied similarity ... -
Visual servoing of a five-bar linkage mechanism
(Institute of Electrical and Electronics Engineers Inc., 2015)This paper presents a position-based visual servoing system with fixed camera to control the position of a five-bar linkage mechanism. The document records the goals set, the used methods, the obstacles encountered, the ... -
Generalized molecular descriptors derived from event-based discrete derivative
(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 ... -
α-bandlimited diffuser in fractional Fourier optics
(SPIE, 2016)We propose a method for calculating appropriate α-band limited diffusers using the fractional Fourier transform. In order to do this, we implement a method for performing a numerical interpolation in the fractional Fourier ...
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.