Investigaciones: Envíos recientes
Mostrando ítems 621-640 de 1409
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Trade-Off Asymmetric Profile for Extended-Depth-of-Focus Ocular Lens
(Cartagena de Indias, 2022-02-19)We explore the possibility of extending the depth of focus of an imaging lens with an asymmetric quartic phase-mask, while keeping the aberration within a relatively low level. This can be intended, for instance, for ... -
On the Conic Convex Approximation to Locate and Size Fixed-Step Capacitor Banks in Distribution Networks
(Cartagena de Indias, 2022-02-20)The problem of the optimal siting and sizing of fixed-step capacitor banks is studied in this research from the standpoint of convex optimization. This problem is formulated through a mixed-integer nonlinear programming ... -
Resultados de aprendizaje y mecanismos de evaluación en los programas académicos de educación superior en Colombia
(Cartagena de Indias, 2022-02-01)El propósito de este estudio es diseñar un sistema de resultados de aprendizaje y determinar su importancia en los programas de educación superior en Colombia. La investigación fue racional propositiva y se contrastan el ... -
A new radial basis integration method applied to the boundary element analysis of 2D scalar wave equations
(Cartagena de Indias, 2022-01-10)A new integration method named the Radial Basis Integration Method (RBIM) that include the Kriging Integration Method (KIM) Narváez and Useche (2020) as a particular case and performs boundary only offline precomputations ... -
Optimal placement and sizing of PV sources in distribution grids using a modified gradient-based metaheuristic optimizer
(Cartagena de Indias, 2022-03-11)The problem of the optimal placement and sizing of renewable generation sources based on photovoltaic (PV) technology in electrical distribution grids operated in medium-voltage levels was studied in this research. This ... -
A two-stage approach to locate and size PV sources in distribution networks for annual grid operative costs minimization
(Cartagena de Indias, 2022-03-21)This paper contributes with a new two-stage optimization methodology to solve the problem of the optimal placement and sizing of solar photovoltaic (PV) generation units in mediumvoltage distribution networks. The ... -
Effects of orifice sizes for uncontrolled filling processes in water pipelines
(Cartagena de Indias, 2022-03-12)The sizing of air valves during the air expulsion phase in rapid filling processes is crucial for design purposes. Mathematical models have been developed to simulate the behaviour of air valves during filling processes ... -
Application of the hurricane-based optimization algorithm to the phase-balancing problem in three-phase asymmetric networks
(Cartagena de Indias, 2022-03-14)This article addresses the problem of optimal phase-swapping in asymmetric distribution grids through the application of hurricane-based optimization algorithm (HOA). The exact mixedinteger nonlinear programming (MINLP) ... -
APPMAR 1.0: A Python application for downloading and analyzing of WAVEWATCH III® wave and wind data
(Cartagena de Indias, 2022-03-10)This work presents APPMAR 1.0, an application written in the Python programming language that downloads, processes, and analyzes wind and wave data. This application is composed of a graphical user interface (GUI) that ... -
Commodity price shocks and the gender wage gap: Evidence from the metal mining prices super-cycle in Chile
(Cartagena de Indias, 2022-02-04)This paper analyzes the local impact of a natural resource shock on female and male wages as well as the gender wage gap. We contrast three hypotheses using the Dutch disease theory and gender-based segregation patterns ... -
Agro-smart Caribe: Soil moisture measurement system
(Cartagena de Indias, 2021-09-29)Advances in information and communication technologies provide precision agriculture with more efficient tools for agricultural monitoring systems and the possibility of crop irrigation automation. This paper presents the ... -
Smart UTB: An IoT platform for Smart Campus
(Cartagena de Indias, 2021-09-29)The Internet of Things (IoT) aims to create applications to improve people’s quality of life using novel protocols, sensor networks, cloud computing, middlewares and other technologies. These applications can be used in ... -
Eleven years of cyberattacks on Chinese supply chains in an era of cyber warfare, a review and future research agenda
(Cartagena de Indias, 2021-08-10)Purpose – The contribution of this study aims to twofold: First, it provides an overview of the current state of research on cyberattacks on Chinese supply chains (SCs). Second, it offers a look at the Chinese Government’s ... -
Perchlorate Contamination: Sources, Effects, and Technologies for Remediation
(Cartagena de Indias, 2021-12-10)Perchlorate is a persistent pollutant, generated via natural and anthropo genic processes, that possesses a high potential for endocrine disruption in humans and biota. It inhibits iodine fixation, a major reason for ... -
Phakopsora pachyrhizi is the major pathogen associated with soybean rust in Colombia
(Cartagena de Indias, 2021-03-26)Soybean crops grown in the plains of eastern Colombia have been affected by the incidence of rust. This disease, still officially regarded as American soybean rust (caused by Phakopsora meibomiae) by the Colombian Department ... -
Design Of a Strategic Planning for The Company MetalProffice S.A.S in Cartagena-Colombia
(Cartagena de Indias, 2021-04-05)The following research work proposes the creation and implementation of a strategic planning for the company Metal Proffice S.A.S. For which a methodology was used that allowed to collect integral information of the company, ... -
Proposal of a Salary Structure for Positions at Productos Caribe S.A.S in Cartagena-Colombia
(Cartagena de Indias, 2021-04-05)The main resource of a company is its human talent, since it is thanks to the cooperation and contribution of employees and the performance of their roles that it is possible to achieve its objectives. Among the factors ... -
Diseño del sistema de gestión del conocimiento para la gestión de proyectos de una Cámara de Comercio en la región Caribe-Colombia
(Cartagena de Indias, 2021-07-21)Knowledge management is one of the most important aspects within the organizational development since its function allows the growth and improvement of the company. This research is oriented to the design of a knowledge ... -
Diagnóstico sobre el impacto del estrés laboral en los equipos de proyectos de construcción
(Cartagena de Indias, 2021-07-21)El estrés laboral afecta en diferentes niveles y severidad a los trabajadores del mundo sin importar la actividad que realicen, aunque claramente las reacciones de cada uno se manifiestan de diversas maneras. Por otra ... -
Marco de Buenas Prácticas para la Iniciación y Planeación en Gestión de Proyectos de viviendas de interés social en Corvivienda, Cartagena de Indias D.T y C
(Cartagena de Indias, 2021-07-21)This research contributes to the solution of the evaluation of the management of projects in the Housing Fund for Social Interest and District Urban Reform (Corvivienda), of the city of Cartagena de Indias D.T. and C., ...
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.