Investigaciones: Envíos recientes
Mostrando ítems 201-220 de 1465
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Modernized Planning of Smart Grid Based on Distributed Power Generations and Energy Storage Systems Using Soft Computing Methods
(Cartagena de Indias, 2022)The modest objective is to check the integrated effect of energy storage systems (ESSs) and distributed generations (DGs) and compare the optimization of the size and location of ESS and DG to explore its challenges for ... -
Modeling a Structured Light System with Open-Source Software
(Cartagena de Indias, 2022)We propose modeling a structured light system with open-source computer graphics software to perform experimental verifications independently of the physical system. Encouraging experimental results show the capabilities ... -
Mitigating fluctuations of wind power generation using superconducting magnetic energy storage: A passivity-based approach
(Cartagena de Indias, 2019)Abstract This paper presents the control of the active and reactive power of a superconducting magnetic energy storage (SMES) system for compensating fluctuations of a power system with high penetration of wind energy ... -
Measuring material thickness changes through tri-aperture digital speckle pattern interferometry
(Cartagena de Indias, 2023)A configuration for the measurement of thickness changes in materials through one-shot digital speckle pattern interferometry (DSPI) was developed. The phase maps calculation was made by adding carrier fringes by the ... -
Mathematic Modelling of a Reversible Hydropower System: Dynamic Effects in Turbine Mode
(Cartagena de Indias, 2023)Over the past few years, there has been significant interest in the importance of reversible hydro-pumping systems due to their favorable flexibility and economic and environmental characteristics. When designing reversible ... -
Market value calculation and the solution of circularity between value and the weighted average cost of capital WACC
(Cartagena de Indias, 2009)Most finance textbooks present the Weighted Average Cost of Capital (WACC) calculation as: WACC = Kd×(1-T)×D% + Ke×E%, where Kd is the cost of debt before taxes, T is the tax rate, D% is the percentage of debt on total ... -
MarkerPose: Robust real-time planar target tracking for accurate stereo pose estimation
(Cartagena de Indias, 2021)Despite the attention marker-less pose estimation has attracted in recent years, marker-based approaches still provide unbeatable accuracy under controlled environmental conditions. Thus, they are used in many fields such ... -
Mapping the transit network of greater Cartagena with mobile phones: Coverage, accessibility, and informality
(Cartagena de Indias, 2022)Emerging methods enable researchers and citizens to map transit networks through participatory processes to understand travel patterns, the location of formal and informal transit networks, and the geography of origin and ... -
Manufacturing and Measuring Techniques for Graphene-Silicone-Based Strain Sensors
(Cartagena de Indias, 2023)The development of techniques for synthesizing graphene and its derivatives, as well as currently available nanocomposite fabrication techniques, coupled with the diverse applications of strain and pressure sensors, has ... -
MALDI-TOF MS for the identification of bacteria from Acropora cervicornis samples with White Band Disease
(Cartagena de Indias, 2022)White Band Disease (WBD) is one of the most harmful coral syndromes in the Caribbean, deteriorating the structure of many corals during the eighties and nineties. Since its etiology is not entirely known, the use of ... -
Performance evaluation of mechanical engineering degrees using partial minimum squares and data envelopment analysis
(Cartagena de Indias, 2022)This study analysed the causal relationship between the learning outcomes acquired in high school and university by mechanical engineering students in Colombia. The methodology articulates partial least squares and data ... -
MAINTENANCE CENTERED ON EXERGY AND EXERGOECONOMIC INDICATORS OF A PREHEAT TRAIN OF A CRUDE OIL DISTILLATION UNIT
(Cartagena de Indias, 2022)Established or create new ones to plan the cleaning tasks of the heat exchangers. In this work, a maintenance strategy is developed for a preheating train under the Maintenance Centered on Energy Efficiency (MCEE) philosophy, ... -
Perspective of environmental accounting policy, administrative and financial information systems
(Cartagena de Indias, 2020-06-23)The objective of the article is to analyze from the public policies the environmental accounting process, as a management system for administrative and financial information. Methodologically, it was based on the positivist ... -
Main difficulties of novel university students when preparing a scientific text
(Cartagena de Indias, 2020)The present research-action work is a descriptive mixed analysis of the micro-writing, macro-writing, methodological and writing in a public presentation errors committed by 46 novel psychology students when they making a ... -
Low-intensity Politicide: Territorialized Extermination of the Partido Revolucionario de los Trabajadores (PRT) in the Colombian Caribbean, 1991-2005
(Cartagena de Indias, 2022)Objective/Context: The following article analyzes the politicide of the Partido Revolucionario de los Trabajadores (PRT) after signing the peace agreement between this guerrilla group and the Colombian government in 1991. ... -
Loneliness and vertical and horizontal collectivism and individualism: A multinational study
(Cartagena de Indias, 2023)This paper investigates how horizontal and vertical individualism and collectivism predict self-report loneliness in addition to the variance accounted for by age and sex in 28 countries (N = 8,345). Horizontal and vertical ... -
Photovoltaic System for Microinverter Applications Based on a Non-Electrolytic-Capacitor Boost Converter and a Sliding-Mode Controller
(Cartagena de Indias, 2022-09-15)This paper presents a photovoltaic (PV) system designed to reduce the DC-link capacitance present in double-stage PV microinverters without increasing the capacitor interfacing the PV source. This solution is based on a ... -
Local stable and unstable manifolds for anosov families
(Cartagena de Indias, 2019)Anosov families were introduced by A. Fisher and P. Arnoux motivated by generalizing the notion of Anosov diffeomorphism defined on a compact Riemannian manifold. They are time-dependent dynamical systems with hyperbolic ... -
Linking cosmic ray intensities to cutoff rigidity through multifractal detrented fluctuation analysis
(Cartagena de Indias, 2022)We use multifractal detrented fluctuation analysis (MFDFA) to investigate the relationship between magnetic rigidity or ”cutoff rigidity” and the variability and multifractal behavior in the time series of the cosmic ray ... -
Pixel-wise rational model for a structured light system
(Cartagena de Indias, 2023-05-15)This Letter presents a novel structured light system model that effectively considers local lens distortion by pixel-wise rational functions. We leverage the stereo method for initial calibration and then estimate the ...
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.
