Pub Date : 2021-06-30DOI: 10.35429/jqsa.2021.22.8.11.17
Andrea González-Ramírez, Josué López, Deni Torres, Israel Yañez-Vargas
Remote sensing imaging datasets for classification generally present high levels of imbalance between classes of interest. This work presented a study of a set of performance evaluation metrics for an imbalance dataset. In this work, a support vector machine (SVM) was used to perform the classification of seven classes of interest in a popular dataset called Salinas-A. The performance evaluation of the classifier was performed using two types of metrics: 1) Metrics for multi-class classification, and 2) Metrics based on the binary confusion matrix. In the results, a comparison of the scores of each metric is developed, some being more optimistic than others due to the bias that they present given the imbalance. In addition, our case study helps to conclude that the Matthews correlation coefficient (MCC) presents the lowest bias in imbalanced cases and is regarded to be robust metric. These results can be extended to any imbalanced dataset taking into account the equations developed by Luque.
{"title":"Analysis of multi-class classification performance metrics for remote sensing imagery imbalanced datasets","authors":"Andrea González-Ramírez, Josué López, Deni Torres, Israel Yañez-Vargas","doi":"10.35429/jqsa.2021.22.8.11.17","DOIUrl":"https://doi.org/10.35429/jqsa.2021.22.8.11.17","url":null,"abstract":"Remote sensing imaging datasets for classification generally present high levels of imbalance between classes of interest. This work presented a study of a set of performance evaluation metrics for an imbalance dataset. In this work, a support vector machine (SVM) was used to perform the classification of seven classes of interest in a popular dataset called Salinas-A. The performance evaluation of the classifier was performed using two types of metrics: 1) Metrics for multi-class classification, and 2) Metrics based on the binary confusion matrix. In the results, a comparison of the scores of each metric is developed, some being more optimistic than others due to the bias that they present given the imbalance. In addition, our case study helps to conclude that the Matthews correlation coefficient (MCC) presents the lowest bias in imbalanced cases and is regarded to be robust metric. These results can be extended to any imbalanced dataset taking into account the equations developed by Luque.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123823740","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}
Pub Date : 2021-06-30DOI: 10.35429/jqsa.2021.22.8.25.30
Arcelia González-García, Claudia Hernández-Salas, Rosa María Martínez-Ortiz, Lilia González-Martínez
Cuachalalate is (Amphiterigium adstringens )an arboreal species of the low deciduous forest whose bark has been used since pre-Hispanic times in traditional medicine because it is one of the products of greatest demand of Mexican herbalism and the economic importance for the communities that live in this ecosystem in the inifap Since 1989, research has been carried out to improve its management, which currently allows its sustainable and legal use. This study was carried out in Jalisco Zacatecas whose objective was to know the use of the curative plants of cuachalalate with traditional medicine as preventive of a scarring of some of the wounds as well as the most frequently consumed and the results indicate that the main areas or fronts of the cortex are from the State of Jalisco for the human
{"title":"Use of the effectiveness of cuachalalate from healing plants in Mezquitic, Jalisco","authors":"Arcelia González-García, Claudia Hernández-Salas, Rosa María Martínez-Ortiz, Lilia González-Martínez","doi":"10.35429/jqsa.2021.22.8.25.30","DOIUrl":"https://doi.org/10.35429/jqsa.2021.22.8.25.30","url":null,"abstract":"Cuachalalate is (Amphiterigium adstringens )an arboreal species of the low deciduous forest whose bark has been used since pre-Hispanic times in traditional medicine because it is one of the products of greatest demand of Mexican herbalism and the economic importance for the communities that live in this ecosystem in the inifap Since 1989, research has been carried out to improve its management, which currently allows its sustainable and legal use. This study was carried out in Jalisco Zacatecas whose objective was to know the use of the curative plants of cuachalalate with traditional medicine as preventive of a scarring of some of the wounds as well as the most frequently consumed and the results indicate that the main areas or fronts of the cortex are from the State of Jalisco for the human","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127114795","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}
Pub Date : 2020-12-31DOI: 10.35429/JQSA.2020.21.7.18.27
J. Quintanilla-Domínguez, J. I. Yáñez-Vargas, Miriam Butanda-Serrano, Enrique Sánchez-Torrecitas
One of the main disease caused by the COVID-19 in the humans is the pneumonia. This disease mainly attacks the lungs and one of the effective methods for diagnosis is through X-ray chest analysis. Due this in this work a methodology that allow the segmentation and analysis of regions that belong to the lungs in images of X-ray chest is presented. This methodology is based mainly in the implementation of some digital image processing techniques such as: contrast enhancement, segmentation, binarization and the application of morphological operations as the erosion and dilatation.
{"title":"Analysis and automatic segmentation of images for lungs regions extraction in X-ray chest","authors":"J. Quintanilla-Domínguez, J. I. Yáñez-Vargas, Miriam Butanda-Serrano, Enrique Sánchez-Torrecitas","doi":"10.35429/JQSA.2020.21.7.18.27","DOIUrl":"https://doi.org/10.35429/JQSA.2020.21.7.18.27","url":null,"abstract":"One of the main disease caused by the COVID-19 in the humans is the pneumonia. This disease mainly attacks the lungs and one of the effective methods for diagnosis is through X-ray chest analysis. Due this in this work a methodology that allow the segmentation and analysis of regions that belong to the lungs in images of X-ray chest is presented. This methodology is based mainly in the implementation of some digital image processing techniques such as: contrast enhancement, segmentation, binarization and the application of morphological operations as the erosion and dilatation.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114264288","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}
Pub Date : 2020-12-31DOI: 10.35429/jqsa.2020.21.7.28.33
O. L. Luévano-Cabrales, Francisco Guillermo Salas-Pérez, Raymundo Juárez-del Toro, Julio César Morales-Villa
Measure relation of electrostatic powder coating thickness at diferent points on irregular surfaces. In this work, we found the relation between the thickness measures at diferent areas of a irregular surface, by the electrostatic powder coating on pieces with five diferent geometries and varyin slightly parameters like potential and application distance. At the products where the electrostatic powder coating are used, the thickness measure is an importante quality characteristic, however on the irregular surfaces is so noticeable when the thickness measure is not uniform on the entire piece. But when it is known that the thickness ratio varies from one area to another of the same piece, it is easier to establish a methodology that allows the process to have a measure of uniform thickness.
{"title":"Relationship between electrostatic powder coating thickness measurements at different points on uneven surfaces","authors":"O. L. Luévano-Cabrales, Francisco Guillermo Salas-Pérez, Raymundo Juárez-del Toro, Julio César Morales-Villa","doi":"10.35429/jqsa.2020.21.7.28.33","DOIUrl":"https://doi.org/10.35429/jqsa.2020.21.7.28.33","url":null,"abstract":"Measure relation of electrostatic powder coating thickness at diferent points on irregular surfaces. In this work, we found the relation between the thickness measures at diferent areas of a irregular surface, by the electrostatic powder coating on pieces with five diferent geometries and varyin slightly parameters like potential and application distance. At the products where the electrostatic powder coating are used, the thickness measure is an importante quality characteristic, however on the irregular surfaces is so noticeable when the thickness measure is not uniform on the entire piece. But when it is known that the thickness ratio varies from one area to another of the same piece, it is easier to establish a methodology that allows the process to have a measure of uniform thickness.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124316866","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}
Pub Date : 2020-12-31DOI: 10.35429/JQSA.2020.21.7.1.8
Jorge Luis Aguilar-Marin, J. Vergara-Vázquez, Jorge Gabriel Padilla-Cantero, D. Hernández-González
One of the parameters considered in the design of transmission lines is the distribution of its generated electric field. The following article presents a reference methodology that allows obtaining the electric field on the right-of-way of a High Voltage Alternating Current (HVAC) overhead transmission line, the methodology is developed based on the Load Simulation Method (MSC) and the Image Method. The results obtained present a difference of less than 2%. In this way a case study of a 230 kV HVAC double circuit transmission line presented, an optimization of the phases of the transmission line circuits is carried out to determine the most efficient configuration for obtaining the electric field density. The results obtained allow a configuration of n circuits, admitting the different nominal voltages of the HVAC lines.
{"title":"Methodology to calculate the intensity of the electric field generated in a double circuit High Voltage Alternating Current overhead transmission line","authors":"Jorge Luis Aguilar-Marin, J. Vergara-Vázquez, Jorge Gabriel Padilla-Cantero, D. Hernández-González","doi":"10.35429/JQSA.2020.21.7.1.8","DOIUrl":"https://doi.org/10.35429/JQSA.2020.21.7.1.8","url":null,"abstract":"One of the parameters considered in the design of transmission lines is the distribution of its generated electric field. The following article presents a reference methodology that allows obtaining the electric field on the right-of-way of a High Voltage Alternating Current (HVAC) overhead transmission line, the methodology is developed based on the Load Simulation Method (MSC) and the Image Method. The results obtained present a difference of less than 2%. In this way a case study of a 230 kV HVAC double circuit transmission line presented, an optimization of the phases of the transmission line circuits is carried out to determine the most efficient configuration for obtaining the electric field density. The results obtained allow a configuration of n circuits, admitting the different nominal voltages of the HVAC lines.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125672349","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}
Pub Date : 2019-12-31DOI: 10.35429/jqsa.2019.19.6.17.28
Lucila Muñiz –Merino, Bulmaro Juárez-Hernandez, Hugo Adan Cruz-Suares
In this work, we review publications which analyze, develop and apply concepts of change points, in general, the formulation of the problem of the change point, and different problems, including some of its applications are presented. Applications include temporal, spatial and temporal-space change points, parametric and non-parametric methods are used.
{"title":"Change points in space-time, methodology and applications","authors":"Lucila Muñiz –Merino, Bulmaro Juárez-Hernandez, Hugo Adan Cruz-Suares","doi":"10.35429/jqsa.2019.19.6.17.28","DOIUrl":"https://doi.org/10.35429/jqsa.2019.19.6.17.28","url":null,"abstract":"In this work, we review publications which analyze, develop and apply concepts of change points, in general, the formulation of the problem of the change point, and different problems, including some of its applications are presented. Applications include temporal, spatial and temporal-space change points, parametric and non-parametric methods are used.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127992866","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}
Pub Date : 2019-06-30DOI: 10.35429/jqsa.2019.18.6.1.5
Luis Mario Magaña-Maldonado, D. Contreras-López
At present, the polymer industry has gained increasing importance due to the versatility of its properties, as well as the impact they have on the environment. The present investigation provides the determination of optimal operating conditions for the polymerization of styrene and vinyl propionate in a Batch reactor, as well as the copolymerization of styrene with propionate monomers by the process of emulsion via free radicals, allowing to observe the variations with respect to Reaction yields and molecular weights. Another important factor is the activation of the initiator so that the polymerization process begins within each of the micelles. Likewise, it was found that, in the copolymerizations, there are considerable variations with respect to reaction yields and molecular weights as the concentrations are modified. In addition, it was found that there are higher yields in styrene polymerizations per solution than emulsion.
{"title":"Synthesis of polar copolymers by the process of emulsion via free radicals (FRP)","authors":"Luis Mario Magaña-Maldonado, D. Contreras-López","doi":"10.35429/jqsa.2019.18.6.1.5","DOIUrl":"https://doi.org/10.35429/jqsa.2019.18.6.1.5","url":null,"abstract":"At present, the polymer industry has gained increasing importance due to the versatility of its properties, as well as the impact they have on the environment. The present investigation provides the determination of optimal operating conditions for the polymerization of styrene and vinyl propionate in a Batch reactor, as well as the copolymerization of styrene with propionate monomers by the process of emulsion via free radicals, allowing to observe the variations with respect to Reaction yields and molecular weights. Another important factor is the activation of the initiator so that the polymerization process begins within each of the micelles. Likewise, it was found that, in the copolymerizations, there are considerable variations with respect to reaction yields and molecular weights as the concentrations are modified. In addition, it was found that there are higher yields in styrene polymerizations per solution than emulsion.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129638464","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}
Pub Date : 2019-06-30DOI: 10.35429/jqsa.2019.18.6.6.10
Francisco Javier Gaytán-Lara, D. Contreras-López, Rosario Galindo-González
The creation of films constituted by semiconductor oxides of zinc oxide (ZnO) incorporated into a polar polymer matrix was proposed, looking for such films to be easy to apply, friendly to the environment and compatible with materials. Within the experimental process, the synthesis of styrene copolymers with a polar monomer (methyl methacrylate) was carried out through the suspension and emulsion polymerization processes.
{"title":"Influence of zinc oxide in a polar polymer matrix","authors":"Francisco Javier Gaytán-Lara, D. Contreras-López, Rosario Galindo-González","doi":"10.35429/jqsa.2019.18.6.6.10","DOIUrl":"https://doi.org/10.35429/jqsa.2019.18.6.6.10","url":null,"abstract":"The creation of films constituted by semiconductor oxides of zinc oxide (ZnO) incorporated into a polar polymer matrix was proposed, looking for such films to be easy to apply, friendly to the environment and compatible with materials. Within the experimental process, the synthesis of styrene copolymers with a polar monomer (methyl methacrylate) was carried out through the suspension and emulsion polymerization processes.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132179967","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}
Pub Date : 2019-06-30DOI: 10.35429/jqsa.2019.18.6.11.15
Diana Nelly Contreras-Zarazúa, D. Contreras-López, R. Fuentes-Ramírez, Rosario Galindo-González
Currently, the polymers industry has gained increasing importance due to the versatility of its properties. In this work were synthesized copolymers of styrene with vinyl acetate at different concentrations through a process polymerization of suspension, which are the starting points for obtaining of composites with polyaniline synthesized PANI chemical oxidative polymerization process, used for doping HCl at a concentration of 1.5 M and ammonium persulfate 0.5 M in a mass radio of 1:1. The conductivity was evaluated by means of cyclic voltammetry and impedance spectroscopy, in order to determine the effect of the concentration of the polar monomer in the composite founded that increase concentration of polar comonomer the conductivity also too.
{"title":"Obtaining conductive composites of PANI and thermoplastic polymers","authors":"Diana Nelly Contreras-Zarazúa, D. Contreras-López, R. Fuentes-Ramírez, Rosario Galindo-González","doi":"10.35429/jqsa.2019.18.6.11.15","DOIUrl":"https://doi.org/10.35429/jqsa.2019.18.6.11.15","url":null,"abstract":"Currently, the polymers industry has gained increasing importance due to the versatility of its properties. In this work were synthesized copolymers of styrene with vinyl acetate at different concentrations through a process polymerization of suspension, which are the starting points for obtaining of composites with polyaniline synthesized PANI chemical oxidative polymerization process, used for doping HCl at a concentration of 1.5 M and ammonium persulfate 0.5 M in a mass radio of 1:1. The conductivity was evaluated by means of cyclic voltammetry and impedance spectroscopy, in order to determine the effect of the concentration of the polar monomer in the composite founded that increase concentration of polar comonomer the conductivity also too.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130762340","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}
Pub Date : 2019-06-30DOI: 10.35429/jqsa.2019.18.6.16.24
R. Vazquez-Gutierrez, Mauricio Flores-Aguilar, Juan Manuel Núñez-Montalvo
This research is the result of 4 investigations carried out in the northern region of Aguascalientes. The municipalities on which this research is based are Aguascalientes, San Francisco de los Romo, Rincon de Romos, and Jesús María. The objective of this study is to investigate the costs incurred by companies in carrying out their operations in the municipality of Rincon de Romos. The realization of this research allows us to know the costs incurred by these surveyed companies in order to know in what percentage the highest quality costs applied, whether in prevention costs, evaluation costs, internal failure costs and external failure costs.
这项研究是在阿瓜斯卡连特斯北部地区进行的4项调查的结果。这项研究基于Aguascalientes, San Francisco de los Romo, Rincon de Romos和Jesús María。本研究的目的是调查各公司在林孔·德·罗莫斯市开展业务所产生的费用。本研究的实现使我们能够了解这些被调查公司所产生的成本，以便了解最高质量成本的比例，无论是预防成本，评估成本，内部失效成本还是外部失效成本。
{"title":"Impact of the quality costs applied in automotive and metal-mechanical manufacturing SMEs in the North of Aguascalientes Municipality of Rincon de Romos","authors":"R. Vazquez-Gutierrez, Mauricio Flores-Aguilar, Juan Manuel Núñez-Montalvo","doi":"10.35429/jqsa.2019.18.6.16.24","DOIUrl":"https://doi.org/10.35429/jqsa.2019.18.6.16.24","url":null,"abstract":"This research is the result of 4 investigations carried out in the northern region of Aguascalientes. The municipalities on which this research is based are Aguascalientes, San Francisco de los Romo, Rincon de Romos, and Jesús María. The objective of this study is to investigate the costs incurred by companies in carrying out their operations in the municipality of Rincon de Romos. The realization of this research allows us to know the costs incurred by these surveyed companies in order to know in what percentage the highest quality costs applied, whether in prevention costs, evaluation costs, internal failure costs and external failure costs.","PeriodicalId":158993,"journal":{"name":"Journal of Quantitative and Statistical Analysis","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116727891","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}
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