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Mostrando ítems 411-430 de 1394
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Design, Assembly and Working Modes of Spherical 3-RRR Coaxial Parallel Robot
(Cartagena de Indias, 2021)Design, configuration and operation modes of spherical 3-_RRR coaxial parallel robot were performed. A mathematical analysis of the robot was made, which consists of inverse and forward kinematic using geometric and numerical ... -
Designing Fresnel microlenses for focusing astigmatic multi-Gaussian beams by using fractional order Fourier transforms
(Institute of Physics Publishing, 2011)According to a scalar theory of diffraction, light propagation can be expressed by two-dimensional fractional order Fourier transforms. Since the fractional Fourier transform of a chirp function is a Dirac distribution, ... -
Detection and Analysis of ERPs for Social Cognition Evaluation
(Cartagena de Indias, 2022)This paper describes an approach for elicitation, acquisition, and analysis of event-related potentials (ERPs) for social cognition evaluation. We used images of emotional content that were classified into three groups ... -
Detection and removal of dust artifacts in retinal images via sparse-based inpainting
(Cartagena de Indias, 2021-09-06)Dust particle artifacts are present in all imaging modalities but have more adverse consequences in medical images like retinal images. They could be mistaken as small lesions, such as microaneurysms. We propose a method ... -
Detection of broken bars in three-phase motors by using curve fits and classification algorithms
(Cartagena de Indias, 2022)Since they transform electrical energy into mechanical energy, three-phase induction motors are one of the main assets that companies have. Therefore, good monitoring of their conditions and diagnosing their faults is ... -
Detection of forest windthrows with bitemporal COSMO-SkyMed and Sentinel-1 SAR data
(Cartagena de IndiasCampus Tecnológico, 2023-08-29)Wind represents a primary source of disturbances in forests, necessitating an assessment of the resulting damage to ensure appropriate forest management. Remote sensing, encompassing both active and passive techniques, ... -
Detection of Sociolinguistic Features in Digital Social Networks for the Detection of Communities
(Cartagena de Indias, 2020-03-13)The emergence of digital social networks has transformed society, social groups, and institutions in terms of the communi cation and expression of their opinions. Determining how language variations allow the detection of ... -
Deterioro y conflictos ambientales alrededor de la actividad pesquera en la ciénaga castañal en El Peñón Bolívar : aportes para la sostenibilidad del territorio /
(2020)Este estudio aborda el estado de la actividad pesquera y sus implicaciones económicas ambientales y sociales en la ciénaga Castañal en el municipio de El Peñón Bolívar como consecuencia del deterioro del recurso íctico. ... -
Determination of the optimal range of the compressor inlet air temperature in a power plant with stig cycle through of advanced exergetic analysis
(Cartagena de Indias, 2019)Conventional exergy analysis identifies the more inefficient components; however, this doesn’t regard interaction between components, neither real improvement potential to each component of the system, this information is ... -
Determination of the Voltage Stability Index in DC Networks with CPLs: A GAMS Implementation
(Springer, 2019)This paper addresses the voltage collapse analysis in direct-current (DC) power grids via nonlinear optimization approach. The formulation of this problem corresponds to an optimization problem, where the objective function ... -
Determining Changes in Mangrove Cover Using Remote Sensing with Landsat Images: a Review
(Cartagena de IndiasCampus TecnológicoIngeniería Ambiental, 2023-12-22)Mangroves are ecosystems within the intertidal zone of tropical and subtropical coasts; they offer ecosystem services such as protection from coastal erosion and storms and flood control, act as carbon sinks and are also ... -
Determining factors for the creation of innovation-based ventures
(Cartagena de Indias, 2022)This research aims to determine the impact of internal and external factors of Social Capital, Entrepreneurial Self-Efficacy, and Person-Entrepreneurship Fit in the transition of nascent entrepreneurs toward venture creation. ... -
Developing a Robust Acquisition System for Fringe Projection Profilometry
(Institute of Physics Publishing, 2019)Since Fringe Projection Profilometry (FPP) is an intensity-based coding strategy, it is prone to improper optical setup arrangement, surface texture and reflectance, uneven illumination distribution, among others. These ... -
Developing an indicator for material selection based on durability and environmental footprint: A Circular Economy perspective
(Cartagena de IndiasCampus TecnológicoIngeniería Mecánica, 2020-05-19)The Circular Economy comprises several strategies to enhance the sustainability of products. However, most of the research in this area has focused on Recycling, Recovering and final disposal. Strategies for lifespan ... -
Development and Characterization of Plantain (Musa paradisiaca) Flour-Based Biopolymer Films Reinforced with Plantain Fibers
(Cartagena de Indias, 2022-02-15)Agroindustrial wastes are a cheap and abundant source of natural fibers and acromolecules that can be used in the manufacturing of biocomposites. This study presents the development and thermo-mechanical characterization ... -
Development and implementation of an optical profilometer by laser triangulation
(Cartagena de Indias, 2020)Profilometers are instruments commonly used in surface metrology tasks. These instruments play a key role in the industry, such as in manufacturing and quality assurance. However, conventional profilometry techniques require ... -
Development and validation of a prototype for the on-line simultaneous analysis of quality caprolactam synthesized on an industrial scale
(Cartagena de IndiasCampus Tecnológico, 2022-12-05)Caprolactam is a highly useful monomer obtained through the Beckmann arrangement, which generates large profits worldwide and is widely used in different industries. During the synthesis process, various components can be ... -
Development and/or change of the notion of permanent object and operative causality: Empirical evidence in the frst year of life
(Fundacion para el Avance de la Psicologia, 2013)This study examines the notion of permanent object during the first year of life, taking into account the controversy of two approaches about the nature of change: developmental change and cognitive change. Using a ... -
Development of a Measurement System Using Infrared Spectroscopy-Attenuated Total Reflectance, Principal Component Analysis and Artificial Intelligence for the Safe Quantification of the Nucleating Agent Sorbitol in Food Packaging
(Cartagena de IndiasCampus Tecnológico, 2024-04-15)Sorbitol derivatives and other additives are commonly used in various products, such as packaging or food packaging, to improve their mechanical, physical, and optical properties. To accurately and precisely evaluate the ... -
Development of an online optical prototype for the simultaneous analysis of defects or gels in industrially synthesized polypropylene films. Part 1: Comparison with ASTM D 3351–93 methods
(Cartagena de IndiasCampus Tecnológico, 2024-04-01)Polypropylene (PP) films are crucial in various industrial applications, from packaging to medical prod ucts. However, a common challenge in PP manufacturing is the presence of gel-like defects. These gels are minor defects ...
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.