Ingenius-Revista de Ciencia y Tecnologia最新文献_第5页

Influencia del recubrimiento de cromato de zinc en la corrosión de los aceros ASTM A-500 y A-500 galvanizado expuestos en una cámara de niebla salina 铬酸锌涂层对盐雾室ASTM A-500和A-500镀锌钢腐蚀的影响

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/ingenius.n26.2020.06

Cristian Guilcaso, León y Ramírez, Augusto Coque, Xavier Vaca, D. Molina, Isaac Simbaña

引用次数: 1

Transfer learning en la clasificación binaria de imágenes térmicas 热图像二元分类中的转移学习

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/ingenius.n26.2021.07

D. A. Pérez-Aguilar, R. H. Risco-Ramos, Luis Casaverde-Pacherrez

{"title":"Transfer learning en la clasificación binaria de imágenes térmicas","authors":"D. A. Pérez-Aguilar, R. H. Risco-Ramos, Luis Casaverde-Pacherrez","doi":"10.17163/ingenius.n26.2021.07","DOIUrl":"https://doi.org/10.17163/ingenius.n26.2021.07","url":null,"abstract":"La clasificación de imágenes térmicas es un aspecto clave en el sector industrial, debido a que suele ser el punto de partida en la detección de fallos en equipos eléctricos. En algunos casos, esta tarea se automatiza mediante el uso de técnicas tradicionales de inteligencia artificial, mientras que en otros, es realizada de manera manual, lo cual puede traer consigo altas tasas de error humano. Este artículo presenta un análisis comparativo entre once arquitecturas de transfer learning (AlexNet, VGG16, VGG19, ResNet, DenseNet, MobileNet v2, GoogLeNet, ResNeXt, Wide ResNet, MNASNet y ShuffleNet) mediante el uso de fine-tuning, con la finalidad de realizar una clasificación binaria de imágenes térmicas en una red de distribución eléctrica. Para ello, se dispone de una base de datos con 815 imágenes, divididas mediante la técnica tipo hold-out 60-20-20 y validación cruzada con 5-folds, para finalmente analizar su rendimiento mediante el test de Friedman. Luego de los experimentos, se obtuvieron resultados satisfactorios con exactitudes superiores a 85 % en diez de las arquitecturas previamente entrenadas. Sin embargo, la arquitectura que no se entrenó previamente presentó una exactitud baja; concluyéndose que la aplicación de transfer learning mediante el uso de arquitecturas previamente entrenadas es un mecanismo adecuado en la clasificación de este tipo de imágenes, y representa una alternativa confiable frente a técnicas tradicionales de inteligencia artificial.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"48 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78771866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Convergencia y matices de la neutralidad en la red en América del Sur 南美洲网络中立的融合与细微差别·全球之声

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/INGS.N26.2021.03

Roberto D. Triviño, Antonio Franco-Crespo, Leonardo Ochoa-Urrego

{"title":"Convergencia y matices de la neutralidad en la red en América del Sur","authors":"Roberto D. Triviño, Antonio Franco-Crespo, Leonardo Ochoa-Urrego","doi":"10.17163/INGS.N26.2021.03","DOIUrl":"https://doi.org/10.17163/INGS.N26.2021.03","url":null,"abstract":"The Internet has become the ultimate platform for convergence, closely associated with network, technology, and media, due to its open and nondiscriminatory architecture. Convergence in telecommunications is propelled by ideas, ideologies, and policies progressively and cyclically, bringing further technological advancement, market, business, and policy changes. As a response to convergence, net neutrality seeks to regulate the relationship between Internet service providers and users to avoid discriminatory practices and ensure the openness of the Internet as a platform for innovation, economic development, and access to information for all. The objective of this work is to analyze the development of convergence in the telecommunications sector and the progress of net neutrality policies in South America, with five specific cases using a qualitative empirical approach. Within the findings, we identify different approaches for legislating net neutrality, controversies concerning the levels of commitment to the principles, ambiguity for effective enforcement of the rules, and commercial arrangements that in practice violate net neutrality.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"1 1","pages":"30-40"},"PeriodicalIF":0.2,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41535164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of homogenization preceding to cold-rolling on the microstructure of the AA-3003 冷轧前均匀化对AA-3003组织的影响

IF 0.2

Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/ingenius.n26.2021.09

Gennifer Aparicio-Carrillo, Marco Ciaccia-Sortino, Ricardo Jerez G.

{"title":"Influence of homogenization preceding to cold-rolling on the microstructure of the AA-3003","authors":"Gennifer Aparicio-Carrillo, Marco Ciaccia-Sortino, Ricardo Jerez G.","doi":"10.17163/ingenius.n26.2021.09","DOIUrl":"https://doi.org/10.17163/ingenius.n26.2021.09","url":null,"abstract":"The aluminum alloy AA3003 produced by a direct chill continuous casting process has a microstructure that significantly affects its potential use in engineering applications. This work studies the effects of the homogenizing heat treatment on the microstructure of AA3003 with cold working. Six conditions were studied, combining the variables initial condition (with and without homogenizing) and amount of cold working. All conditions were evaluated by means of optical and scanning electron microscopy, in combination with backscattered electrons and energy dispersive X ray spectroscopy techniques. Results suggest that for both initial conditions, the secondary phases present are Al6(Mn,Fe) and α-Al(Mn,Fe)Si, which vary in number, size, and shape. The homogenization caused the dissolution and precipitation of dispersoids, in addition to the spheroidization of primary particles, and minor variation of the size of secondary particles during cold working. Secondary phases are composed of primary and secondary particles, which differ in their Fe and Mn content, resulting in a lower Mn/Fe ratio for the primary particles (0,57 for the as‑received condition and 0,80 for the homogenized condition), whereas the dispersoids have a higher Mn/Fe ratio (1,56 after the homogenization). Homogenization increased ductility and reduced the likelihood of cracking during cold working. This was evidenced by the results obtained for strength, hardness, and ductility.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87533161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluación experimental de un motor de encendido provocado bajo diferentes gasolinas 不同汽油下点火发动机的实验评价

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/ingenius.n26.2021.02

Víctor Alfonso Taipe-Defaz, Edilberto Antonio Llanes Cedeño, César Fabricio Morales-Bayetero, Ana Elizabeth Checa-Ramírez

{"title":"Evaluación experimental de un motor de encendido provocado bajo diferentes gasolinas","authors":"Víctor Alfonso Taipe-Defaz, Edilberto Antonio Llanes Cedeño, César Fabricio Morales-Bayetero, Ana Elizabeth Checa-Ramírez","doi":"10.17163/ingenius.n26.2021.02","DOIUrl":"https://doi.org/10.17163/ingenius.n26.2021.02","url":null,"abstract":"El motor de combustión interna de encendido provocado es una máquina térmica que permite obtener una potencia mecánica a partir de la energía química de un combustible. El presente trabajo tuvo como objetivo evaluar el desempeño de un motor de combustión interna mediante el balance de energía y exergía, bajo el uso individual de las tres gasolinas comercializadas en el Ecuador (súper, extra y ecopaís). La metodología experimental consistió en la puesta en marcha bajo el uso individual de las gasolinas hasta alcanzar su máxima potencia a una velocidad de giro del motor, donde se tomaron mediciones de temperatura, consumo específico del combustible y la relación aire combustible para un tiempo de tres minutos. Los resultados muestran una eficiencia energética de 11,31 % para gasolina súper, 10,75 % para gasolina extra y 10,39 % para gasolina ecopaís. En lo relacionado a la eficiencia exergética se estableció un 58,81 % para la gasolina súper, 58,89 % para la gasolina extra y un 59,19 % para la gasolina ecopaís. Los resultados permiten concluir que existe un potencial exergético de mejoramiento que puede ser una oportunidad para aumentar la eficiencia energética.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"7 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74027002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influencia del homogeneizado previo al laminado en frío en la microestructura del AA3003 冷轧前均质化对AA3003显微组织的影响

IF 0.2

Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/INGS.N26.2021.09

Gennifer Nataly Aparicio-Carrillo, Marco Ciaccia-Sortino, G. RicardoRicardoJerez

{"title":"Influencia del homogeneizado previo al laminado en frío en la microestructura del AA3003","authors":"Gennifer Nataly Aparicio-Carrillo, Marco Ciaccia-Sortino, G. RicardoRicardoJerez","doi":"10.17163/INGS.N26.2021.09","DOIUrl":"https://doi.org/10.17163/INGS.N26.2021.09","url":null,"abstract":"The aluminum alloy AA3003 produced by a direct chill continuous casting process has a microstructure that significantly affects its potential use in engineering applications. This work studies the effects of the homogenizing heat treatment on the microstructure of AA3003 with cold working. Six conditions were studied, combining the variables initial condition (with and without homogenizing) and amount of cold working. All conditions were evaluated by means of optical and scanning electron microscopy, in combination with backscattered electrons and energy dispersive X ray spectroscopy techniques. Results suggest that for both initial conditions, the secondary phases present are Al6(Mn,Fe) and α-Al(Mn,Fe)Si, which vary in number, size, and shape. The homogenization caused the dissolution and precipitation of dispersoids, in addition to the spheroidization of primary particles, and minor variation of the size of secondary particles during cold working. Secondary phases are composed of primary and secondary particles, which differ in their Fe and Mn content, resulting in a lower Mn/Fe ratio for the primary particles (0,57 for the as‑received condition and 0,80 for the homogenized condition), whereas the dispersoids have a higher Mn/Fe ratio (1,56 after the homogenization). Homogenization increased ductility and reduced the likelihood of cracking during cold working. This was evidenced by the results obtained for strength, hardness, and ductility.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"1 1","pages":"99-110"},"PeriodicalIF":0.2,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42411476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deposición convectiva rápida a escala nanométrica de materiales compuestos activos para la fabricación de transistores orgánicos de efecto de campo 用于制造有机场效应晶体管的活性复合材料的纳米级快速对流沉积

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/ingenius.n26.2021.01

Freddy G. Del Pozo, Marta Mas-Torrent

引用次数: 0

Evaluación de las propiedades dinámicas de un pórtico plano (MDOF) en una mesa vibratoria 振动台平面框架(MDOF)动力学特性的评价

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-29 DOI: 10.17163/ingenius.n26.2021.05

Andrea Tapia Andrade, Wilson Torres Berni

{"title":"Evaluación de las propiedades dinámicas de un pórtico plano (MDOF) en una mesa vibratoria","authors":"Andrea Tapia Andrade, Wilson Torres Berni","doi":"10.17163/ingenius.n26.2021.05","DOIUrl":"https://doi.org/10.17163/ingenius.n26.2021.05","url":null,"abstract":"Hoy en día, el estudio de la dinámica estructural es fundamentalmente teórico con acceso a ciertas simulaciones vía emph{software}, sin embargo, este proyecto intenta que el estudiante pueda entender y observar de manera física las respuestas dinámicas de modelos experimentales. Estos modelos corresponden a pórticos planos de múltiples grados de libertad, que están sometidos a aceleración en la base, la cual es generada por una mesa vibratoria. Los resultados obtenidos se compararán con teóricos. Estos fueron obtenidos basándose en la descomposición modal y en el método de Newmark para el cálculo de la respuesta dinámica, considerando variación lineal en la aceleración de cada piso. La aplicación generada, ATH Dynamic Responses, proporcionó las respuestas teóricas, mediante una interfaz gráfica amigable para el usuario. Los modelos experimentales están constituidos por dos materiales: acero inoxidable (parantes) y láminas de acrílico (pisos), y fueron ensayados sobre una mesa vibratoria. La adquisición de datos se realizó mediante acelerómetros que se colocaron en cada piso y sobre la mesa vibratoria, fueron corregidos, tanto por línea base como con el filtro pasa bajo. Los resultados obtenidos muestran que la instrumentación con una mesa vibratoria y adquisición de datos con acelerómetros proporcionan valores muy similares a los teóricos en cuanto a respuestas dinámicas y propiedades modales.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"2 12","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72390998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluación de las propiedades dinámicas de un pórtico plano (MDOF) en una mesa vibratoria 振动台上平面门式起重机动态特性的评估

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2021-06-01 DOI: 10.17163/INGS.N26.2021.05

Andrea Tapia Andrade, Wilson Torres Berni

{"title":"Evaluación de las propiedades dinámicas de un pórtico plano (MDOF) en una mesa vibratoria","authors":"Andrea Tapia Andrade, Wilson Torres Berni","doi":"10.17163/INGS.N26.2021.05","DOIUrl":"https://doi.org/10.17163/INGS.N26.2021.05","url":null,"abstract":"At present, the study of structural dynamics is mainly theoretical with access to certain simulations through software, however, this project attempts that the student may understand and physically observe the dynamic responses of experimental models. These models correspond to 2D - frames with multiple degrees of freedom that are subjected to acceleration in the base; this acceleration is generated by a Shake Table II, and the results obtained will be compared with theoretical results. These theoretical results were obtained based on modal decomposition and Newmark's method for calculating the dynamic response, considering the linear variation in the acceleration of each floor. The application developed, ATH Dynamic Responses, provided the theoretical responses through a graphical interface friendly for the user. The experimental models are constituted by two materials: stainless steel for frame legs and acrylic sheets for floors; these were tested on a Shake Table II”. The data was acquired using accelerometers that were placed in each floor and in the shake table, and they were corrected both by baseline and with the low pass filter. The results obtained show that the instrumentation with the Shake Table II and the data acquisition with accelerometers provide results similar to the theoretical ones regarding dynamic responses and modal properties.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"1 1","pages":"49-62"},"PeriodicalIF":0.2,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42798355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reduciendo la brecha de seguridad del IoT con una arquitectura de microservicios basada en TLS y OAuth2 通过基于TLS和OAuth2的微服务架构缩小物联网安全差距

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Ingenius-Revista de Ciencia y Tecnologia Pub Date : 2020-12-31 DOI: 10.17163/ings.n25.2021.09

Diego Ordóñez-Camacho

{"title":"Reduciendo la brecha de seguridad del IoT con una arquitectura de microservicios basada en TLS y OAuth2","authors":"Diego Ordóñez-Camacho","doi":"10.17163/ings.n25.2021.09","DOIUrl":"https://doi.org/10.17163/ings.n25.2021.09","url":null,"abstract":"El Internet de las cosas es una de las tendencias más prometedoras en la actualidad. La rapidez de su adopción, sin embargo, ha provocado ciertas brechas críticas en la seguridad de los sistemas involucrados. Este proyecto analizó el problema de seguridad de una manera amplia, pero enfocándose en entornos de tipo hogar inteligente, donde el uso de dispositivos con tecnologías ampliamente heterogéneas genera problemas en la autenticación con múltiples servicios, y en la confidencialidad de los datos, si la red llegara a verse comprometida. Para atacar estos problemas, se juntaron tecnologías de última generación como OAuth2 y TLS, entre otras, junto a una metodología arquitectural de microservicios de acoplamiento ligero, para generar una arquitectura IoT segura y de amplio alcance, respaldada y validada por una implementación de referencia. La división en capas funcionales permite que tanto los dispositivos y sensores fijos como aquellos móviles, puedan acoplarse al sistema de manera transparente y fluida. El esquema de seguridad estructurado en tres niveles incrementales permite que cada equipo pueda integrarse al que mejor se adapte tanto a sus recursos computacionales como al tipo de información que debe entregar o consumir. Los resultados muestran la flexibilidad de la solución y la solidez del esquema de seguridad presentado.","PeriodicalId":53899,"journal":{"name":"Ingenius-Revista de Ciencia y Tecnologia","volume":"3 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84257810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0