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On the fractal properties of cosmic rays and Sun dynamics cross-correlations
(2022)
We investigate the cosmic rays and ten physical parameters of heliosphere behavior considering the scaling features of their temporal evolution. Our analysis start with the cosmic rays measurements by a neutron monitor ...
Hydropower Advantages over Batteries in Energy Storage of Off-Grid Systems: A Case Study
(2023-08-30)
Microgrids are decentralized power production systems, where the energy production and consumption are very close to each other. Microgrids generally exploit renewable energy sources, encountering a problem of storage, as ...
Analysis in circular economy research in Latin America: A bibliometric review
(2023-09-09)
Circular Economy (CE) plays a crucial role in Latin America, where the transition to new economic development models poses significant challenges. This study conducts a bibliometric analysis of CE research in the region ...
Dimethylformamide Impurities as Propylene Polymerization Inhibito
(2023-09-18)
This research study examined how the use of dimethylformamide (DMF) as an inhibitor af fects the propylene polymerization process when using a Ziegler–Natta catalyst. Several experiments
were carried out using TiCl4/MgCl2 ...
Experimental–Density Functional Theory (DFT) Study of the Inhibitory Effect of Furan Residues in the Ziegler–Natta Catalyst during Polypropylene Synthesis
(2023-09-21)
In this experimental–theoretical study, the effect of furan on Ziegler–Natta catalyst produc tivity, melt flow index (MFI), and mechanical properties of polypropylene were investigated. Through
the analysis of the global ...
Determining factors for the creation of innovation-based ventures
(2022)
This research aims to determine the impact of internal and external factors of Social Capital, Entrepreneurial Self-Efficacy, and Person-Entrepreneurship Fit in the transition of nascent entrepreneurs toward venture creation. ...
Effect of the financial structure on the liquidity risk of SMEs in Cartagena as a base of project formulation
(2023-06-09)
The Liquidity Risk in Small and Medium Enterprises - SMEs in the City of Cartagena-Colombia is analyzed, based on the determination
of their Capital Structure. The variables, liquidity risk (dependent) and capital structure ...
A Six Sigma Approach to Assessing the Quality of Higher Education in Colombia [Un enfoque de Seis Sigma para evaluar la calidad de la educación superior en Colombia]
(2022)
Las instituciones universitarias se enfrentan a retos de competitividad que se enmarcan en las exigencias de la sociedad, los cambios de preferencia de los estudiantes y la evolución tecnológica; esto plantea la necesidad ...
The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies
(2023-01-20)
The Dark Energy Spectroscopic Instrument (DESI) Survey has obtained a set of spectroscopic measurements of galaxies
to validate the final survey design and target selections. To assist in these tasks, we visually inspect ...
Neural High Order Sliding Mode Control for Doubly Fed Induction Generator based Wind Turbines
(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 ...
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.