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Mostrando ítems 801-820 de 1794
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When is the frame of nuclei spatial: A new approach
(2020-07-01)For a frame L, let XL be the Esakia space of L. We identify a special subset YL of XL consisting of nuclear points of XL, and prove the following results: • L is spatial iff YL is dense in XL. • If L is spatial, then ... -
In-plane anisotropy in BSCCO superconducting tapes: transport and magnetometric criteria
(2020-07-01)Here, the anisotropy between the longitudinal and transverse directions of multi-filamentary tapes (“in plane" anisotropy) is studied by transport and magnetization measurements. By minimally manipulating experimental data, ... -
Robust weighted Gaussian processes
(2020-07-09)This paper presents robust weighted variants of batch and online standard Gaussian processes (GPs) to effectively reduce the negative impact of outliers in the corresponding GP models. This is done by introducing robust ... -
Optimización del Recorrido de Desperdicios Sólidos Industriales Mediante Dispositivo de Medición y Comunicación
(2020-07-12)El presente proyecto tiene como objetivo el diseño de un control sistematizado sobre los contenedores de residuos en el ámbito industrial. Por lo cual se utilizaron diversas herramientas como el dispositivo físico que esta ... -
Exact analytic solution of an unsolvable class of first Lane–Emden equation for polytropic gas sphere
(2020-07-24)This article provides for thefirst time a general analytical solution to the Lane-Emden equation of thefirst kind.So far only three known analytical solutions are found in the literature, for the following values ofn: 0, ... -
Design of a Morlet wavelet control algorithm using super–twisting sliding modes applied to an induction machine
(IEEE Xplore, 2020-07-24)In this paper, a Morlet wavelet and super–twisting control algorithm are designed and implemented to a three–phase induction motor. The mathematical model of the squirrel–cage induction motor to be controlled is ... -
Effect of the stoichiometry in La0.7(SrxCa0.3-x)MnO3 by x-ray photoelectron spectroscopy for hyperthermia applications
(2020-07-28)The use of physical properties in magnetic materials is a research area aiming to help overcome the biomaterial problems encountered in hyperthermia cancer treatment. A1-xBxMnO3 nanoparticle structures are one such ... -
Facile Synthesis of Ultrasmall, Highly Stable, and Biocompatible Gold Nanoparticles Stabilized with Lipoic Acid: Cytotoxicity and Structural Characterization
(2020-07-28)Using the colloidal method, and lipoic acid as a stabilizer, ultrasmall gold nanoparticles with an average size of 2.5 nm were synthesized. They are highly stable, have COOH functional groups, at concentrations lower than ... -
Influence of HIP Sintering and Ce/La Additions on the Microstructure and Hardness on Inconel 718 Nickel-Based Superalloy
(Cambridge University Press, 2020-07-30) -
Predicción del éxito de proyectos de videojuegos en Kickstarter con aprendizaje automático
(2020-08-01)Kickstarter se ha convertido en el principal medio de financiamiento para proyectos de desarrolladores independientes. En esta plataforma se han subvencionado exitosamente alrededor de 2,500 proyectos de videojuegos. Aún ... -
Burnout Syndrome in Police O cers and Its Relationship with Physical and Leisure Activities
(2020-08-03)No previous studies in Mexico have been found that jointly analyze physical and leisure activities as variables related to mental health in police o cers. This paper presents research on burnout in Mexican Police o cers. ... -
Design and fabrication of a cryogenic magnetocaloric composite by spark plasma sintering based on the RAl2 Laves phases (R= Ho, Er)
(2020-08-05)We report the design and fabrication of a highly dense (>97%) two-phase magnetocaloric composite operating in the cryogenic temperature range based on the binary Laves phases HoAl2 and ErAl2 with a nearly table-like magnetic ... -
Phase transformation and magnetocaloric effect of Co-doped Mn–Ni–In melt-spun ribbons
(2020-08-06)Ribbon-shaped magnetocaloric materials are favorable to achieve high heat-transfer efficiencies due to their large specific surface area. In this work, Mn50Ni41−xIn9Cox (0 ≤ x ≤ 4) ribbons were prepared using a melt-spinning ... -
A Brief Review of Game Engines for Educational and Serious Games Development
(IGI GLOBAL, 2020-08-10)Gamification is the use of game design elements to enhance the teaching-learning process and turn a regular, non-game activity into a fun, engaging game. Simultaneously, serious games are proposed as an efficient and ... -
Environmental impact of wine fermentation in steel and concrete tanks
(2020-08-10)Wine industries commonly use concrete and stainless-steel tanks in fermentation, but the selection of a container depends on factors such as price, installation costs, requirements, maintenance costs, and monitorability. ... -
Suppliers selection based on intuitionistic fuzzy dimensional analysis
(2020-08-11)Supplier selection is a crucial activity in the supply chain management, and fundamentally it is a multi-criteria decision-making problem. However, the interaction of the criteria, the uncertain regarding to subjectivity ... -
Análisis logístico y simulación de una calle de retorno paralela en un aeropuerto regional
(2020-08-14)La evolución y el desarrollo de la industria aeronáutica exigen que día a día este medio de transporte implemente metodologías que encaminan a la seguridad operacional de las aeronaves, afortunadamente vivimos en una era ... -
Synergism in novel silver-copper/hydroxyapatite composites for increased antibacterial activity and biocompatibility
(2020-08-15)This study develops a novel silver-copper/hydroxyapatite composite (Ag–Cu/HA) with high biocompatibility and antibacterial activity. Two different materials were synthesized, namely silver-hydroxyapatite (Ag-HA) and ... -
An Improved Method for Optical Characterization of Mineral Dust and Soot Particles in the El Paso-Juárez Airshed
(2020-08-15)Highly time-resolved aerosol measurements and analysis are necessary for a proper aerosol characterization in many polluted regions, because aerosol concentrations in polluted environments can change over time scales of ... -
Bioactivation of zirconia surface with laminin protein coating via plasma etching and chemical modification
(2020-08-18)Surface modification offers a promising alternative to provide bioactivity to implanted inert biomaterials, improving their integration and performance with living tissues. In this contribution, zirconia has been used as ...