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Motion of test particles in the field of a naked singularity
(American Physical Society, 2016)
We investigate the motion of test particles in the gravitational field of a static naked singularity generated by a mass distribution with a quadrupole moment. We use the quadrupole metric (q metric) which is the simplest ...
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 ...
A submersible printed sensor based on a monopole-coupled split ring resonator for permittivity characterization
(MDPI AG, 2019)
This work presents a non-invasive, reusable and submersible permittivity sensor that uses a microwave technique for the dielectric characterization of liquid materials. The proposed device consists of a compact split ring ...
Inventory Management Methodology to determine the levels of integration and collaboration in supply chain
(Universidad de Tarapaca, 2017)
This paper presents a Methodology of Inventory Management that determines the levels of integration and cooperation in a supply chain, so that policies and joint actions to improve the performance of the actors in the chain ...
Study on high throughput nanomanufacturing of photopatternable nanofibers using tube nozzle electrospinning with multi-tubes and multi-nozzles
(Society of Micro and Nano Systems, 2017)
High throughput nanomanufacturing of photopatternable nanofibers and subsequent photopatterning is reported. For the production of high density nanofibers, the tube nozzle electrospinning (TNE) process has been used, where ...
Viscosity analysis in lubricants through factorial design with three factors
(Latin American and Caribbean Consortium of Engineering Institutions, 2018)
In the field of statistics, the experimental design becomes an analysis tool to establish the ideal conditions of a very important process and / or product, analysis of variance it is very useful in cases where there are ...
Colombian Andean thermal springs: reservoir of thermophilic anaerobic bacteria producing hydrolytic enzymes
(Springer Tokyo, 2019)
Anaerobic cultivable microbial communities in thermal springs producing hydrolytic enzymes were studied. Thermal water samples from seven thermal springs located in the Andean volcanic belt, in the eastern and central ...
Accounting for attitudes on parking choice: An integrated choice and latent variable approach
(Elsevier Ltd, 2018)
The well-differentiated impact that parking supply options produce on congestion, pollution and land consumption arouses the interest of policy makers for a better understanding of car user's behavior when choosing a parking ...
Current control mode in PV systems integrated with DC-DC converters for MPPT: An IDA-PBC approach
(IEEE Computer Society, 2018)
In this paper, an interconnection and damping assignment passivity-based control (IDA-PBC) theory is employed to obtain maximum power point tracking (MPPT) for a photovoltaic (PV) module. A current control mode is selected ...
Autonomía profesional y riesgos de seguridad de los periodistas en Colombia
(Flacso Mexico, 2017)
This paper analyzes the relationship between professional autonomy and security risks of journalists in Colombia. A correlational-transversal research was conducted with a sample of 751 journalists who filled out 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.