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Revista Facultad de Ingeniería Universidad de Antioquia最新文献

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Enhancing Facial Recognition in Surveillance Systems through Embedded Super-resolution 通过嵌入式超分辨率增强监控系统中的人脸识别能力
Revista Facultad de Ingeniería Universidad de Antioquia Pub Date : 2024-02-08 DOI: 10.17533/udea.redin.20240203
A. D. Gómez-Bautista, F. C. Calderón-Bocanegra
{"title":"Enhancing Facial Recognition in Surveillance Systems through Embedded Super-resolution","authors":"A. D. Gómez-Bautista, F. C. Calderón-Bocanegra","doi":"10.17533/udea.redin.20240203","DOIUrl":"https://doi.org/10.17533/udea.redin.20240203","url":null,"abstract":"This document details the implementation of a sub-pixel convolutional neural network designed to enhance the resolution of face images. The model uses a series of filters to progressively increase the number of pixels, estimating the necessary information for new pixels from the original image and training derived from 22000 synthetic images produced by adversarial neural networks. Within the context of surveillance and related applications, the trained convolutional network exhibits beneficial characteristics. For instance, it can be deployed within a device to achieve higher-resolution images than those the physical camera can produce. This research underscores the feasibility of such a device through the implementation and evaluation of the network on the NVIDIA Jetson TX2 embedded system. The findings demonstrate the model's practicality for real-time surveillance applications and its ability to produce superior-quality images compared to several interpolation methods, as determined by an exhaustive testing process measuring various attributes of the generated images.","PeriodicalId":514060,"journal":{"name":"Revista Facultad de Ingeniería Universidad de Antioquia","volume":"52 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140460258","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
Methods for evaluation of corrosion rate on magnesium alloys: a review 评估镁合金腐蚀率的方法：综述
Revista Facultad de Ingeniería Universidad de Antioquia Pub Date : 2024-01-30 DOI: 10.17533/udea.redin.20240102
J. Castaño-González, L. F. Berrío, Félix Echeverría, E. Correa, A. A. Zuleta
{"title":"Methods for evaluation of corrosion rate on magnesium alloys: a review","authors":"J. Castaño-González, L. F. Berrío, Félix Echeverría, E. Correa, A. A. Zuleta","doi":"10.17533/udea.redin.20240102","DOIUrl":"https://doi.org/10.17533/udea.redin.20240102","url":null,"abstract":"The major drawback of some magnesium alloys is their low corrosion resistance. Therefore, the evaluation of corrosion resistance is a critical factor in developing new alloys and surface treatments. The techniques employed for the determination of corrosion rate include mass loss assessment, hydrogen evolution, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). However, there are still difficulties in precisely estimating this parameter in Mg alloys. In this review, the reported applications, advantages, and disadvantages of the techniques mentioned above were analyzed. On the other hand, a large number of corrosion rate values reported for various Mg alloys in 3 different media (NaCl, Hanks´ solution and SBF), using mass loss, hydrogen evolution, and PP, were compared and analyzed. Generally, corrosion rates obtained from mass loss are higher than those obtained from hydrogen evolution. On the other hand, it is not possible to obtain correlations between corrosion rates obtained from PP and those obtained from mass loss and hydrogen evolution. Even more, dissimilar corrosion rate values are reported for the same alloy, implying that the measuring procedures are not well standardized.","PeriodicalId":514060,"journal":{"name":"Revista Facultad de Ingeniería Universidad de Antioquia","volume":"72 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140485994","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
Commercial turpentine oil enriched with α-terpineol using an acid heterogeneous catalyst 使用酸性异构催化剂富含 α-松油醇的商用松节油
Revista Facultad de Ingeniería Universidad de Antioquia Pub Date : 2024-01-29 DOI: 10.17533/udea.redin.20240101
Iván de Jesús Aguas-Caballero, Aída Luz Villa-Holguín, Edwin Alexis Alarcón-Durango
{"title":"Commercial turpentine oil enriched with α-terpineol using an acid heterogeneous catalyst","authors":"Iván de Jesús Aguas-Caballero, Aída Luz Villa-Holguín, Edwin Alexis Alarcón-Durango","doi":"10.17533/udea.redin.20240101","DOIUrl":"https://doi.org/10.17533/udea.redin.20240101","url":null,"abstract":"The hydration of α-pinene, limonene, β-pinene, and commercial turpentine oil in the presence of strong acidic cation exchange resin Amberlyst-15 was studied. The acid catalytic hydration was performed in a batch reactor, and the effect of solvent at various temperatures and reaction times was evaluated. The main hydration product obtained from α-pinene was α-terpineol with a yield of 36 % (4 h, 70 °C, 2-propanol as solvent); however, the selected catalytic system was even more active to obtain α-terpineol when β-pinene was used as a substrate, obtaining α-terpineol yield of 38 % in 2 h of reaction. For the hydration of turpentine (70 °C, turpentine:water:2-propanol mass ratio of 1:0.5:2, 15 % w/w catalyst) the composition of reaction mixture after 4 h was 35 % w/w of α-terpineol, 8 % w/w of α-pinene, and 0.5 % w/w of β –pinene, which correspond to a final content of α-terpineol similar to the concentration obtained when α-pinene was used as a substrate (36 % w/w).","PeriodicalId":514060,"journal":{"name":"Revista Facultad de Ingeniería Universidad de Antioquia","volume":"19 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140488701","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
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