Uso de tecnologías de la información y comunicación (TIC) en la universidad amazónica peruana / Use of Communication and Information Technologies (CIT) in Peruvian Amazon University

ABSTRACTThe objective was to determine the characteristics of use communication and information technologies by teachers in professional work in a Peruvian amazon university. Material and methods: it was applied a instrument with items multiplechoice answers to measured the dimensions of profile, competence in use of communication and information technologies, academic useand affective vision to a random sample of 39 academics with different job training. The study was non-experimental, descriptive transversal. Results and conclusions: It was found that the highest percentage of teachers whown unfavorable results in the profile dimension of implementation and competence in the use of communication and information technologies, without equipment, deficient internet access and deficient skills to the use software in the daily work; while the affective vision show the favorable results.RESUMENEl objetivo fue determinar las características de utilización de tecnologías de la información y comunicación por los docentes de una universidad amazónica peruana en su desempeño profesional. Material y métodos: Se aplicó un cuestio-nario estructurado con ítems de respuestas de opción múltiple que midieron las dimensiones perfil de implementación, competencia en la utilización de tecnologías de la información y comunicación, uso académico de recursos informáticos y la visión afectiva, a una muestra aleatoria conformada por 39 docentes universitarios de diferente formación profesional. El estudio fue de tipo no experimental, descriptivo transversal. Resultados y conclusiones: Se encontró que en las dimensiones perfil de implementación y competencia en la utilización de tecnologías de la información y comunicación se muestra el mayor porcentaje de docentes con resultados desfavorables, que carecen de equipamiento, acceso a internet y deficientes habilidades para el uso de programas informático en su labor cotidiana; mientras que en las dimensiones uso académico de tecnologías de la información y comunicación y la visión afectiva, los resultados son muy favorables.

Mechanism of Hydrojoining and Approach to Increase Torsion Strength of Assembled Camshafts

Assembled hollow camshaft can be manufactured through hydrojoining process which has the advantages including joining multiple elements onto a tube in once loading, high joining strength, efficiency, and precision. The method of improving joining strength by using cams with noncircular hole was presented. Through numerical simulation and experiment, plastic deformation law of hydrojoining process was studied. The displacement of cam and tube, and the profile dimension change of cam during hydrojoining were obtained. The effect of hole shape of cams on joining strength was analyzed. The assembled hollow camshafts with casting iron cams used for a car engine and those with quenched steel cams for a truck engine were successfully manufactured using hydrojoining technology.

Fabrication of Faucet Using Hydroforming and Bending Processing

This research aims at the development of faucet using the techniques of hydroforming and bending. In this study, a tube made from stainless steel SUS 304 is used. Finite element model, including tube, dies and punches, are established using a commercial code LS-DYNA. Tensile test is used to obtain the material properties especially in true stress-strain curve. Piecewise linear plasticity model is used to simulate the plastic deformation of material during the forming process. The initial internal pressure is designed by using the theory of thick-walled cylinder subjecting to internal pressure only. Simulation is first used to find the optimal loading conditions for hydroforming and bending forming. Experiment is then performed to fabricate the prototype of faucets using the simulated loading parameters. The results show that good correlation of the distributed thickness and profile dimension between simulation and experiment are obtained.