Artículo en revista de investigación: Envíos recientes
Mostrando ítems 661-680 de 823
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Propuesta para el entendimiento conceptual del tiro parabólico en base a la realidad aumentada Parte II
(2018-12)Most of students from the introductory physics courses show conceptual understanding problems. One possible cause is the conventional instruction. This teaching style is based on a lack of cognitive interaction between ... -
Degradation modeling of 2 fatigue-crack growth characteristics based on inverse Gaussian processes: A case study
(2019-05-30)Most modern products that are highly reliable are complex in their inner and outer structures. This situation indicates quality characterization by the interaction of multiple performance characteristics, which motivates ... -
Estudio empírico del enfoque asociativo en el contexto de los problemas de clasificación
(2019). Investigaciones realizadas por la comunidad cient´ıfica han evidenciado que el rendimiento de los clasificadores, no solamente depende de la regla de aprendizaje, sino tambien de las complejidades inher- ´ entes en ... -
Synthesis and Novel Purification Process of PANI and PANI/AgNPs Composite
(2019-04-24)In this work, polyaniline (PANI) is synthesized via oxidative polymerization of aniline and purified using organic solvents where the emeraldine phase is isolated by employing a phase separation system. The above contributes ... -
An Enhanced Lightweight IoT-based Authentication Scheme in Cloud Computing Circumstances
(2019-05-06)With the rapid deployment of the Internet of Things and cloud computing, it is necessary to enhance authentication protocols to reduce attacks and security vulnerabilities which affect the correct performance of applications. ... -
Exploring the synergetic effects of sample types on the performance of ensembles for credit risk and corporate bankruptcy prediction
(2019-05-01)Credit risk and corporate bankruptcy prediction has widely been studied as a binary classification problem using both advanced statistical and machine learning models. Ensembles of classifiers have demonstrated their ... -
In-situ X-ray photoelectron spectroscopy analysis of the initial growth of CdS thin films by chemical bath deposition
(2019-07-31)Cadmium sulfide is the main choice among n-type semiconductors for several solar cell technologies due to its excellent optical, structural and electronic characteristics. Even when it has been widely studied, there are ... -
Reliability analysis using exponentiated Weibull distribution and inverse power law
(2019-06-01)Today in reliability analysis, the most used distribution to describe the behavior of devices is theWeibull distribution. Nonetheless, theWeibull distribution does not provide an excellent fit to lifetime datasets that ... -
Measuring Back Injury Risk in Mexican Workers of an Automotive Company
(2019-05)850 thousand workers per year spread across the 32 states, of which Puebla contributes with 465 106, developing, in a high percentage, the verification of new parts as part of the manufacture process. This activity is ... -
Propuesta para el entendimiento conceptual del tiro parabólico en base a la realidad aumentada Parte I
(2018-12)La mayoría de los estudiantes de los cursos introductorios de física muestran problemas de entendimiento conceptual. Algunas de las posibles causas son: 1) la enseñanza tradicional, 2) la poca versatilidad por parte del ... -
Purification and glutaraldehyde activation study on HCl-Doped PVA–PANI copolymers with different aniline concentrations
(2019-01-01)In this work, we report the synthesis and purification of polyvinyl alcohol-polyaniline (PVA–PANI) copolymers at different aniline concentrations, and their molecular (1H-NMR and FTIR), thermal (TGA/DTG/DSC), optical ... -
Los valores egocéntricos desfavorecen el comportamiento pro-ambiental de los guías de buceo en el Parque Nacional Arrecifes de Cozumel
(2019-04-10)El buceo como actividad turística ha potencializado la economía, pero también ha impactado a las zonas arrecifales. Durante el buceo, el guía es el principal actor en la protección del ambiente marino, pues ... -
Direct and Indirect measurements of the magnetic and magnetocaloric properties of Ni0.895Cr0.105MnGe1.05 melt-spun ribbons in high magnetic fields
(2019-10-15)We report the magnetic and magnetocaloric properties of rapidly solidified Ni0.895Cr0.105MnGe1.05 melt-spun ribbons studied by both direct (adiabatic temperature change) and indirect (isothermal magnetic entropy change) ... -
Ni-Co-Mn-Sn quaternary alloys: magnetic hysteresis loss reduction and ductility enhancement by iron alloying
(2019-09-01)The influence of Fe-alloying on the structural transition temperatures, microstructure, and mechanical and magnetocaloric properties of polycrystalline Ni41Co9−xFexMn40Sn10 (at. %) (x = 0–3) alloys has been studied. The ... -
Enhanced magnetocaloric effect in rapidly solidified HoNi2 melt-spun ribbons
(2019-02-05)The structural, magnetic and magnetocaloric properties of HoNi2 melt-spun ribbons were investigated by X-ray diffraction, magnetization and specific heat measurements. The as-solidified ribbons samples produced are single ... -
Giant low-field magnetocaloric effect in Si alloyed Ni-Co-Mn-In alloys
(2019-01-15)For NiMn-based Heusler alloys, simultaneously achieving high magnetization difference and low thermal hysteresis across the magnetostructural transformation is of crucial importance to obtain large low-field actuated ... -
Critical magnetic and magnetocaloric behavior of amorphous melt-extracted Gd50(Co69.25Fe4.25Si13B13.5)50 microwires
(2019-07)We report on the structural, magnetic, and magnetocaloric properties and critical behavior of high-quality amorphous melt-extracted Gd50(Co69.25Fe4.25Si13B13.5)50 alloy microwires with an average diameter of 42 μm. The ... -
Tuning the reversible magnetocaloric effect in Ni-Mn-In based alloys through Co and Cu co-doping
(2019-03-01)The reversibility of the giant magnetocaloric effect (MCE) through the magnetic field–induced magnetostructural transformation in Ni–Mn–In‐based alloys is a key issue towards the potential magnetic refrigeration applications. ... -
Magnetic properties of GaAs:Mn self-assembled nanostructures grown at relatively high-temperature by Molecular Beam Epitaxy
(2019-04-01)We report the influence of the Mn atomic concentration (at.%) on the nanostructures formation and magnetic properties of GaAs:Mn layers grown by Molecular Beam Epitaxy at a relatively high substrate temperature of 530 °C ... -
Application of IoT with haptics interface in the smart manufacturing industry
(2019-05-01)The emerging technologies that make up Industry 4.0, include the Internet of Things and big data. The haptic interfaces have been used in different industries, but apparently, they are not integrated with the two technologies ...