Artículo en revista de investigación: Envíos recientes
Mostrando ítems 841-860 de 1091
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Synthesis of nanostructured Nickel compounds on conductive metallicsubstrates
(2019-09-16)Nickel hydroxide, oxide, and sulfide films were synthesized on conductive Ni metallic substrates by solidvapor reactions, calcination and hydrothermal methods. The synthesized films were characterized by XRD, XPS, FE-SEM, ... -
A New Chaotic Oscillator—Properties, Analog Implementation, and Secure Communication Application
(2019-01-23)This paper reports a new 3-dimensional autonomous chaotic system with four nonlinearities. The system is studied with respect to its numerical solutions in phase space, including sensitive dependence on initial conditions, ... -
Lower Secondary School Mathematics Teachers’ TopicSpecific Content Knowledge in the U.S. and Russia
(2019-03-01)This interpretive cross-case study examined the U.S. and Russian teachers’ topic-specific knowledge of lower secondary mathematics. In total, N=16 teachers (8 from the U.S., and 8 from Russia) were selected for the study ... -
Estimación de los Coeficientes de Inercia y de Fricción de un Motor de CD
(2019-11)En este trabajo se presentan algunos modelos de fricción, y se destaca la importancia de los parámetros de fricción viscosa y de Coulomb, los cuales son necesarios para definir los distintos modelos que describen el ... -
Metodologías para diseño de prácticas didácticas en sistemas de control
(2019-11)Dada la evolución de la tecnología de sistemas de control, microelectrónica e informática de los últimos años, el desarrollo de productos es cada día más complejo; esto marca la necesidad de metodologías para el desarrollo ... -
Método Weibull para la Reducción de Tiempo de Prueba Ambiental para Divisor Óptico
(2019-09-30)En este artículo se desarrolla un plan de prueba de vida para un divisor óptico estándar, que permite conocer su tiempo de vida útil y su confiabilidad R(t). De acuerdo con el estándar GR-2866, las variables ambientales a ... -
Impact of Managers and Human Resources on Supply Chain Performance
(2019-03-01)Current competitive, complex, and uncertain markets push companies toward increasing active collaboration on the part of all human resources (HR) involved in the supply chain (SC), because increasing employee participation ... -
Effect of the sintering technique on the ferroelectric and d33 piezoelectric coefficients of Bi0.5(Na0.84K0.16)0.5TiO3 ceramic
(2019-06-13)In the search of lead-free piezoelectric materials, ceramic processing techniques offer potential tools to increase the piezoelectric and ferroelectric properties in addition to new chemical compositions. Powders of pure ... -
Análisis Metodológico del Esfuerzo Normal 𝝈y Basado en Deflexión Elástica
(2019-11-02)En este artículo se desarrolla un plan de prueba de vida para un divisor óptico estándar, que permite conocer su tiempo de vida útil y su confiabilidad R(t). De acuerdo con el estándar GR-2866, las variables ambientales a ... -
Promoting green infrastructure in Mexico's northern border: The Border Environment Cooperation Commission's experience and lessons learned
(2019-01-01)This paper describes the application of a comprehensive strategic approach for integrating Green Infrastructure (GI) in urban planning in Mexican communities along the U.S-Mexico border as a means to mitigate the environmental, ... -
Weibull analysis for normal/accelerated and fatigue random vibration test
(2019-05-16)In this paper, the formula to estimate the sample size n to perform a random vibration test is derived only from the desired reliability (R(t)). Then, the addressed n value is used to design the ISO16750‐3 random vibration ... -
Integración de un Sistema Inalámbrico de Muestreo Con ESP8266 y Raspberry PI
(2019-11-15)En el presente artículo, se muestra el desarrollo y los resultados obtenidos de un sistema inalámbrico para el muestreo de temperatura y humedad dentro del Laboratorio Nacional de Vivienda y Comunidades Sustentables ubicado ... -
Design, process and commercial benefits gained from AMT
(2019-07-29)Purpose – The purpose of this paper is to measure the relationships between advanced manufacturing technologies (AMTs) categories (stand-alone, intermediated and integrated systems) implementation and design, process and ... -
Zeus – A tool for generating rule-based serious games with gamification techniques
(2019-04-24)Gamification refers to the use of rules and game design techniques to involve and motivate people to achieve their goals. This work proposes an application development architecture that can generate game applications with ... -
Dictionary-based super resolution for positron emission tomography images
(2019-09-11)In this paper, a strategy to increase the resolution of positron emission tomography (PET) images, using a previously trained high resolution dictionary for the sinograms is proposed. The low resolution input sinogram is ... -
The importance of access to information and knowledge coordination on quality and economic benefits obtained from Six Sigma
(2019-11-04)This paper presents a structural equation model that relates knowledge coordination with access to information in the process of implementing Six Sigma and their impact on the quality and economic benefits obtained. The ... -
Role of quick setups on quality control in the Mexican maquiladora industry
(2020)The quick changeover in a production line facilitates the manufacture of small lots and a wide variety of products, where several variables must be controlled to optimize this process. This article presents a structural ... -
The Role of Advanced Manufacturing Technologies in Production Process Performance: A Causal Model
(2019-09-07)Advanced manufacturing technologies (AMT) require considerable investments that managers often avoid, which makes it difficult to link their production operations with the benefits reported in literature review. The present ... -
Influence of Image Pre-processing to Improve the Accuracy in a Convolutional Neural Network
(2019-11-15)Convolutional neural networks (CNN) have been applied in different fields including image recognition. A CNN requires a set of images that will be used to teach to classify it into specific categories. However, the question ... -
The Role of Green Attributes in Production Processes as Well as Their Impact on Operational, Commercial, and Economic Benefits
(2019-03-01)This paper reports a second-order structural equation model composed of four variables: the green attributes before and after an industrial production process, the operating benefits, the commercial benefits, and the ...