Investigaciones: Envíos recientes
Mostrando ítems 701-720 de 1465
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Control temperature of the air conditioning system of a vessel from exergoeconomic analysis
(Cartagena de Indias, 2021-11-01)In this work the air conditioning system of a 93 m long and 14 m wide vessel with 4081 refrigerated m3 distributed in 51 premises is studied. In which energy, exergetic and exergoeconomic analyzes were carried out for ... -
Advanced exergetic analysis of preheat train of a crude oil distillation unit
(Cartagena de Indias, 2021-11-01)In this investigation, the conventional and advanced exergy analysis is used to obtain information about the conditions of the heat exchangers belonging to a crude oil distillation unit, previously to future studies to ... -
A preliminary analysis for selecting the best hydrological probability density functions of annual peak flows associated to various return periods in some rivers of Colombia
(Cartagena de Indias, 2021-11-01)Analysis of extreme events of annual flow peaks are used for sizing hydraulic structures for specified return period. Cumulative distribution functions are applied to annual flow peak records in order to obtain extreme ... -
Conventional and advanced exergetic analysis for the combined cycle of power plant with gas turbine of a refinery
(Cartagena de Indias, 2021-11-01)This article shows the results of the performance study of a combined cycle plant made up of a Siemens STG-800 gas turbine and a MACCHI heat recovery boiler (HRSG) designed to produce 47.5 MW of electricity and 81908 kg / ... -
Strategies for the improvement of research competences in the professional training of engineers
(Cartagena de Indias, 2021-11-01)The objective of this study is proposing strategies to strengthen research competencies needed by engineers in training. An analytical, situation research was conducted in four Engineering programs from a public university ... -
Hydrological considerations for sizing of a barge discharge pipeline runway
(Cartagena de Indias, 2021-11-01)A key element for water supply systems is the design of the water intake components. Mobile floating platforms (barges) are helpful when the hydraulic system displays substantial variations in water levels. This study ... -
Adaptive Control of a Single-Phase Grid-Forming for Feeding Unknown Resistive Loads
(Cartagena de Indias, 2022-03-24)This research aims to relate Information and Communication Technologies (ICT) in the processes of distribution and use of knowledge in Higher Education Institutions (HEI). The methodology used was based on the quantitative ... -
La indexación de las revistas de psicología de Colombia en las bases de datos científicas españolas : un estudio exploratorio
(Cartagena de Indias, 2020-11-29)En el siguiente documento se presenta un trabajo exploratorio en el que se analiza la relevancia de las principales revistas de psicología colombianas, aquellas que están indexadas en los indicadores nacionales (Publindex) ... -
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 ... -
Operating cost reduction in distribution networks based on the optimal phase-swapping including the costs of the working groups and energy losses
(Cartagena de Indias, 2021-07-27)The problem of optimal phase-balancing in three-phase asymmetric distribution networks is addressed in this research from the point of view of combinatorial optimization using a master– slave optimization approach. The ... -
An improved crow search algorithm applied to the phase swapping problem in asymmetric distribution systems
(Cartagena de Indias, 2021-07-23)This paper discusses the power loss minimization problem in asymmetric distribution systems (ADS) based on phase swapping. This problem is presented using a mixed-integer nonlinear programming model, which is resolved by ... -
Alcohol-impaired walking in 16 countries: A Theory-based investigation
(Cartagena de Indias, 2021-05-24)Alcohol is a global risk factor for road trauma. Although drink driving has received most of the scholarly attention, there is growing evidence of the risks of alcohol-impaired walking. Alcohol-impaired pedestrians are ... -
Genetic diversity of Rhizoctonia solaniAG-3PT, the etiological cause of stem canker and black scurf in Colombian potatoes
(Cartagena de Indias, 2021-10-18)Stem canker and black scurf are potato diseases caused by the fungus Rhizoctonia solani, anastomosisgroup 3 (AG-3PT). This fungus affects potato roots, stems, and tubers, reducing crop yields. This study aimsto determine ... -
Market segmentation for incentivising sustainable transport policies
(Cartagena de Indias, 2021-08-19)This paper draws attention to the need for formulating tailored, sustainable transport policies considering heterogeneity in the population regarding their preferences and attitudes. In this regard, we propose a market ... -
A model for the development of programming courses to promote the participation of young women in STEM
(Cartagena de Indias, 2021-10-26)There is a gender gap in science, technology, engineering, and mathematics (STEM), and this is a global problem that affects society. However, it is worth pointing out that the gap is not uniform in all STEM fields. Women’s ... -
Characterization and Modeling of the viscoelastic behavior of hydrocolloid-based films using classical and fractional rheological models
(Cartagena de Indias, 2021-11-18)Hydrocolloid-based films are a good alternative in the development of biodegradable films due to their properties, such as non-toxicity, functionality, and biodegradability, among others. In this work, films based on ... -
Efficient reduction in the annual investment costs in ac distribution networks via optimal integration of solar pv sources using the newton metaheuristic algorithm
(Cartagena de Indias, 2021-12-05)This research addresses the problem of the optimal placement and sizing of (PV) sources in medium voltage distribution grids through the application of the recently developed Newtonmetaheuristic optimization algorithm ... -
Optimal investments in PV sources for grid-connected distribution networks: An application of the discrete–continuous genetic algorithm
(Cartagena de Indias, 2021-12-09)The problem of the optimal siting and sizing of photovoltaic (PV) sources in grid connected distribution networks is addressed in this study with a master–slave optimization approach. In the master optimization stage, a ... -
Analysis of time use surveys using co-statis: a multiway data analysis of gender inequalities in time use in colombia
(Cartagena de Indias, 2021-11-25)The aim of this article was to study 23 time use activities measured in the two latest Colombian National Time Use Surveys, taken in 2013 (with 119,899 participants over the age of 10) and in 2017 (with a sample of 122,620 ... -
Optimal Economic–Environmental Operation of BESS in AC Distribution Systems: A Convex Multi-Objective Formulation
(Cartagena de Indias, 2021-12-10)This paper deals with the multi-objective operation of battery energy storage systems (BESS) in AC distribution systems using a convex reformulation. The objective functions are CO2 emissions, and the costs of the daily ...
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.
