Investigaciones: Envíos recientes
Mostrando ítems 181-200 de 1465
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Optimal Location and Sizing of PV Generation Units in Electrical Networks to Reduce the Total Annual Operating Costs: An Application of the Crow Search Algorithm
(Cartagena de Indias, 2022)This study presents a master–slave methodology to solve the problem of optimally locating and sizing photovoltaic (PV) generation units in electrical networks. This problem is represented by means of a Mixed-Integer Nonlinear ... -
Optimized Two-Level Control of Islanded Microgrids to Reduce Fluctuations
(Cartagena de Indias, 2022-09)The main problem in the operation of micro-grids is controlling the voltage and frequency. The inertia of the whole grid is low, so the operation of the system is interrupted by sudden changes in load or incidence in the ... -
Optimal Pole-Swapping in Bipolar DC Networks Using Discrete Metaheuristic Optimizers
(Cartagena de Indias, 2022)Bipolar direct current (DC) networks are emerging electrical systems used to improve the distribution capabilities of monopolar DC networks. These grids work with positive, negative, and neutral poles, and they can transport ... -
Partial least squares – path modelling for efficiency assessment in the colombian professional football league
(Cartagena de Indias, 2022-03-01)This research develops a production function to evaluate the teams’ efficiency in the Colombian professional soccer league. The designed methodology uses the concepts of structural equations and Data Envelope Analysis. In ... -
Recovery of (Z)-13-Docosenamide from IndustrialWastewater and Its Application in the Production of Virgin Polypropylene to Improve the Coefficient of Friction in Film Type Applications
(Cartagena de IndiasCampus Tecnológico, 2023-01-09)Abstract: Additives play an important role in the production of plastic materials through their application, in which the mechanical, thermal, and physical properties of polymers are improved, making them last longer and ... -
Passivity-based control applied of a reaction wheel pendulum: An IDA-PBC approach
(Cartagena de Indias, 2019-11)This paper presents the development of a nonlinear controller for the reaction wheel pendulum (RWP) via an interconnection and damping assignment passivity-based control (IDA-PBC) approach. The IDA-PBC approach works with ... -
PBC design for voltage regulation in buck converters with parametric uncertainties
(Cartagena de Indias, 2019-12-05)This paper addresses the problem of voltage output regulation in DC Buck converters from the passivity-based control (PBC) point of view. The PBC takes advantage of the natural port-Hamiltonian representation of dynamic ... -
Perceived stress during social isolation due to COVID-19 and cognitive impact on young university students
(Cartagena de Indias, 2022-02-14)The long-lasting and uncontrollable nature of confinement as a measure to slow down the spread of COVID-19 represents a source of extrinsic and chronic stress that could affect cognitive processes, especially memory. The ... -
Recent Developments
(Cartagena de Indias, 2022-12-31)Editor-in-Chief Andres Marrugo discusses the latest developments in the journal -
Numerical modelling for analysing drainage in irregular profile pipes using OpenFOAM
(Cartagena de Indias, 2022)Different methods of two-dimensional and three-dimensional numerical resolution models have been used to predict the air–water interaction in pipe systems in the early twenty-first century, where reliable and adequate ... -
New Scenarios, Actors, and Educational Practices Where Coexistence, Diversity, and Culture Are Built
(Cartagena de Indias, 2022)Introduction. Colombia has a variety of territories, people, cultures, political, and religious affiliations; however, it has been affected by a history of violence, inequality, corruption, among other evils, associated ... -
Neuro-fuzzy control for artificial pancreas: In silico development and validation
(Cartagena de Indias, 2020)Type 1 Diabetes Mellitus (DMT1) is currently one of the most harmful diseases that affect people of any age, including children from birth. Exogenous insulin injections remain the most common treatment for these patients, ... -
Neural High Order Sliding Mode Control for Doubly Fed Induction Generator based Wind Turbines
(Cartagena de Indias, 2022)Wind energy has many advantages because it does not pollute and is an inexhaustible source of energy. In this paper Neural High Order Sliding Mode (NHOSM) control is developed for Doubly Fed Induction Generator (DFIG) based ... -
Narrative review of the HPV vaccine case in El Carmen de Bolivar, Colombia (2014-2021)
(Cartagena de Indias, 2022)Introduction: in 2014 hundreds of teenage women in the rural municipality of El Carmen de Bolivar (Colombia) experienced strange symptoms after being vaccinated with Gardasil, one of the vaccines against Human Papillomavirus ... -
Multi-Objective Optimal Scheduling of a Microgrid Using Oppositional Gradient-Based Grey Wolf Optimizer
(Cartagena de Indias, 2022)Optimal energy management has become a challenging task to accomplish in today’s advanced energy systems. If energy is managed in the most optimal manner, tremendous societal benefits can be achieved such as improved economy ... -
Multi-Objective Dispatch of PV Plants in Monopolar DC Grids Using a Weighted-Based Iterative Convex Solution Methodology
(Cartagena de Indias, 2023)The design of an efficient energy management system (EMS) for monopolar DC networks with high penetration of photovoltaic generation plants is addressed in this research through a convex optimization point of view. The EMS ... -
Multidimensional analysis of the evolution of the COVID-19 pandemic in countries of the Americas
(Cartagena de Indias, 2022)Objective. To evaluate the evolution of the COVID-19 pandemic in countries of the Americas, comparing health system data from before the appearance of the virus in the Region, accumulated cases and deaths before the ... -
Moreno-Castro C, editor. Institutional campaigns in public health. The case against the HPV virus. Madrid: Dextra Editorial; 2017
(Cartagena de Indias, 2019)La inclusión de la vacuna contra el virus del papiloma humano (VPH) como política de salud pública no ha dejado de ser objeto de controversia en todo el mundo desde su aprobación en EE. UU por la Federal Drug Administration ... -
Monitoring the Activity of Industrial Facilities Using Satellite Images of the Heat IR Range
(Cartagena de Indias, 2021)The results of the development and testing of the methodology for automated processing of satellite images of medium spatial resolution in the heat and short-wave IR range are presented. For the specified test areas, digital ... -
Monitoring Conservation of Forest in Protected Areas using Remote Sensing Change Detection Approach: a Review
(Cartagena de Indias, 2022)Abstract: Deforestation and fragmentation threaten biodiversity owing to their impacts on many species. To prevent and minimise the problem, protected areas have been created with the aim of conserving biodiversity, and ...
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.
