Browsing Productos de investigación by Title
Now showing items 864-883 of 962
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Technologies applied in the monitoring and control of the temperature in the Cold Chain
(Institute of Electrical and Electronics Engineers Inc., 2018)In this article, an analysis of the technologies applied for the monitoring and control of the temperature of perishable products in the cold chain is presented. Also, a general description of the stages of the process is ... -
Technology and market conditions toward a new competitive landscape in the wireless access market
(2010)This article argues that the wireless telecommunication market is about to witness a shift in business models and market structure as a result of the deployment of new broadband access technologies, spectrum management ... -
Teletrabajo y trabajo en casa en el contexto del covid-19 : una revisión de literatura /
(2020)El presente articulo tiene como objetivo analizar la literatura científica relacionada con el teletrabajo y trabajo en casa en el contexto del COVID-19, específicamente, se analizan los efectos asociados, las practicas ... -
Test particles in a magnetized conformastatic spacetime
(American Physical Society, 2016)A class of exact conformastatic solutions of the Einstein-Maxwell field equations is presented in which the gravitational and electromagnetic potentials are completely determined by a harmonic function. We derive the ... -
Texture Analysis of Ultrasound Images for Pneumonia Detection in Pediatric Patients
(Institute of Electrical and Electronics Engineers Inc., 2019)Pneumonia is a condition that can be life-threatening and affects a high number of children around the world. Lung ultrasound can be used for the diagnosis of pneumonia, but requires high experience. This paper presents ... -
The Colombian press and the San José galleon: A political and legal interest but not numismatic
(Ediciones Hecate, 2018)This article presents the low interest of the Colombian press in the light of numismatic heritage found in 2015 in the wreck of the San José galleon, warship sunk in Barú (near Cartagena de Indias) in 1708. The opinions ... -
The craft brewing industry in latin America: The case of Colombia
(Palgrave Macmillan, 2017)This chapter presents a brief description of the beer industry in Latin America and specifically in Colombia. The main focus is on the performance of the craft brewing industry. It was found that the same patterns followed ... -
The dynamic model of a four control moment gyroscope system
(Universidad Nacional de Colombia, 2014)The dynamic model of a Four Control Moment Gyroscope (4-CMG) is traditionally obtained after computing the derivative of the angular momentum equation. Although this approach leads to a simple dynamic model, new models ... -
The early retirement of newscasts women presenters in Colombia and Spain: The repudiation of female old age
(Universidad Complutense de Madrid, 2019)The actual television, as a mass communication based on public image, maintains a series of sexual stereotypes that are also transmitted in the newscasts. In the following research article, a cross-cultural gender study ... -
The emergence of cognitive short-term planning: Performance of preschoolers in a problem-solving task
(Universidad Catolica de Colombia, 2015)The aim of this study is to identify patterns of the cognitive planning process of young children emerging in the context of a problem solving task. Using a complex dynamic systems approach, this paper depicts the main ... -
The equivalence between successive approximations and matricial load flow formulations
(Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2021-03-24)This paper shows the equivalence of the matricial form of the classical backward/forward load flow formulation for distribution networks with the recently developed successive approximations (SA) load flow approach. Both ... -
The Kriging integration method applied to the boundary element analysis of Poisson problems
(Cartagena de Indias, 2020)A novel efficient technique is presented for the evaluation of domain integrals that appear in the boundary element method (BEM). Herein, the source term is approximated with the use of radial basis functions, as in the ... -
The maximal subspace for generation of (a,k)-regularized families
(2012)Let A be a linear operator in a Banach space X. We define a subspace of X and a norm such that the part of A in such subspace generates an (a, k)-regularized resolvent family. This space is maximal-unique in a suitable ... -
The notion of Kierkegaardian conscience as an implication of the outside world: A critique of the Cartesian approach
(Universidad del Norte, 2019)This article aims at showing how the Danish philosopher SØren Kierkegaard, through his concept of conscience, criticizes Cartesian skepticism upon affirming the impossibility of doubting the outside world, since the very ... -
The origin of Humboldt and Bonpland's holotype of Oncidium ornithorhynchum, clarified using +200-year-old DNA
(John Wiley and Sons Inc., 2019)Oncidium ornithorhynchum, an epiphytic orchid characterized by erect, pyramidal inflorescences and small yellow flowers, is found in the northern Andes. However, according to the protologue, the type was collected in Mexico ... -
The potential that ethical finance has to generate new investment alternatives in Colombia
(2008)This article examines the need for and the opportunity of developing ethical finance initiatives, specifically ethical banks and ethical investment funds, as alternatives to strengthen development in Colombia. The validity ... -
The rider behavior questionnaire to explore associations of motorcycle taxi crashes in Cartagena (Colombia)
(Cartagena de Indias, 2021-08-16)Objective: This study aimed to identify the association between behavioral factors and crashes of motorcycle taxi riders using the Motorcycle Rider Behavior Questionnaire (MRBQ). Methods: This study was a cross-sectional ... -
The role of energy storage and cross-border interconnections for increasing the flexibility of future power systems : the case of Colombia
(Cartagena de Indias, 2021-04-20)The rapid expansion of renewable energy technologies in the electricity sector introduces new significant challenges for power systems due to their high intermittency. Therefore, more flexibility is needed to ensure that ... -
The role of women in Rainbow of Peace, by Fray Pedro de Santa María y Ulloa
(Universidad Nacional de Educacion a Distancia, 2017)This article analyzes the role of women and the Virgin Mary in the vision of the Dominican friar of the XVII century, Fray Pedro de Santa María y Ulloa, the highest representative of the devotion to the Marian prayer in ... -
The use of infrared spectroscopy and machine learning tools for detection of Meloidogyne infestations
(Cartagena de Indias, 2020-08-01)Plant parasitic nematodes are generally soilborne pathogens that attack plants and cause economic losses in many crops. The infested plants show nonspecific symptoms or, often, are symptomless; therefore, diagnosis is ...
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.
