Pub Date : 2021-03-16DOI: 10.1504/IJQET.2021.10036430
A. Khan, S. Ahmed, Md. Sumon Rahman, M. Islam
Cryogenic piping system is a delicate product. If it is not designed properly, i.e., without considering region specific weather condition, vapourisation will occur at undesirable rate while cryogenic fluid flows through the pipeline. In this work, optimum design for a cryogenic piping system has been explored. To identify existing design limitations as well as customer priorities, quality function deployment has been employed. Data have been collected from local customers and experts through questionnaire-based survey. Double-concentric-pipes type construction with inner pipe diameter of 21.34-33.40 mm and outer pipe diameter of 88.90-193.68 mm has been considered. Four potential insulating mediums; multilayer insulation, vacuum, polyethylene foam, and perlite have been investigated. Multilayer insulation thickness and vacuum pressure have been varied from 6-30 mm and 10−5−5 mbar respectively. Results reveal that use of multilayer insulation accompanied by vacuum pressure of 10−4 mbar ensures optimum performance with optimum insulation thickness of 20 mm.
{"title":"Applying quality function deployment for designing a cryogenic piping system","authors":"A. Khan, S. Ahmed, Md. Sumon Rahman, M. Islam","doi":"10.1504/IJQET.2021.10036430","DOIUrl":"https://doi.org/10.1504/IJQET.2021.10036430","url":null,"abstract":"Cryogenic piping system is a delicate product. If it is not designed properly, i.e., without considering region specific weather condition, vapourisation will occur at undesirable rate while cryogenic fluid flows through the pipeline. In this work, optimum design for a cryogenic piping system has been explored. To identify existing design limitations as well as customer priorities, quality function deployment has been employed. Data have been collected from local customers and experts through questionnaire-based survey. Double-concentric-pipes type construction with inner pipe diameter of 21.34-33.40 mm and outer pipe diameter of 88.90-193.68 mm has been considered. Four potential insulating mediums; multilayer insulation, vacuum, polyethylene foam, and perlite have been investigated. Multilayer insulation thickness and vacuum pressure have been varied from 6-30 mm and 10−5−5 mbar respectively. Results reveal that use of multilayer insulation accompanied by vacuum pressure of 10−4 mbar ensures optimum performance with optimum insulation thickness of 20 mm.","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45169119","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 : 2021-01-01DOI: 10.1504/IJQET.2021.10035985
A. Badiru
This paper is presented as a quality-insight column designed to motivate additional research and development of quality certification programs post-COVID-19 pandemic The framework presented follows the pattern and templates from typical academic accreditation programs in engineering and technology Ideas for quality expectations, assessment, rubrics, and outcome statements are presented in the paper The premise of this paper is to draw out the similarity of academic program accreditation to the process of quality certification and to encourage further research in developing repeatable frameworks for preparation for quality certification in engineering and technology, post COVID-19 pandemic The particular motivation for the methodology of this paper is the need to explore new approaches to quality certification in an era following the pandemic The work environment is, most likely, changed forever due to the pandemic As such, new approaches are desirable, which is what this paper presents
{"title":"Quality insight: product quality certification post COVID-19 using systems framework from academic program accreditation","authors":"A. Badiru","doi":"10.1504/IJQET.2021.10035985","DOIUrl":"https://doi.org/10.1504/IJQET.2021.10035985","url":null,"abstract":"This paper is presented as a quality-insight column designed to motivate additional research and development of quality certification programs post-COVID-19 pandemic The framework presented follows the pattern and templates from typical academic accreditation programs in engineering and technology Ideas for quality expectations, assessment, rubrics, and outcome statements are presented in the paper The premise of this paper is to draw out the similarity of academic program accreditation to the process of quality certification and to encourage further research in developing repeatable frameworks for preparation for quality certification in engineering and technology, post COVID-19 pandemic The particular motivation for the methodology of this paper is the need to explore new approaches to quality certification in an era following the pandemic The work environment is, most likely, changed forever due to the pandemic As such, new approaches are desirable, which is what this paper presents","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66693329","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 : 2020-10-01DOI: 10.1504/ijqet.2020.10032519
B. Athamena, Z. Houhamdi, Ghaleb A. El Refae
{"title":"Managing asymmetric information effects in decision making: task complexity-based model","authors":"B. Athamena, Z. Houhamdi, Ghaleb A. El Refae","doi":"10.1504/ijqet.2020.10032519","DOIUrl":"https://doi.org/10.1504/ijqet.2020.10032519","url":null,"abstract":"","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46152212","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 : 2020-09-30DOI: 10.1504/ijqet.2020.10032515
Abduletif H. Hebo, Kassu Jilcha Sileyew, D. Azene
The issues related to quality have received more attention in all sectors since years back. Improvement tools, like total quality management, have become prevalent terms in the discussion around quality issues. The intention of this paper is to study total quality management (TQM) implementation in Leather Industry Development Institute (LIDI), and more specifically, to see if the integration of TQM with other tools and techniques could significantly improve the service level of the institute and the satisfaction of the customers. The paper specifically highlighted that the role of senior managers in TQM implementation were minimal due lack of TQM awareness and system integration. To improve this, a phase-based TQM framework has been developed and interpreted comprehensively including implementation strategies, possible improvements and integrations. Due to this, the institute was expected to be passionate with regard to TQM and continuous improvement.
{"title":"Application of total quality management in Leather Industry Development Institute","authors":"Abduletif H. Hebo, Kassu Jilcha Sileyew, D. Azene","doi":"10.1504/ijqet.2020.10032515","DOIUrl":"https://doi.org/10.1504/ijqet.2020.10032515","url":null,"abstract":"The issues related to quality have received more attention in all sectors since years back. Improvement tools, like total quality management, have become prevalent terms in the discussion around quality issues. The intention of this paper is to study total quality management (TQM) implementation in Leather Industry Development Institute (LIDI), and more specifically, to see if the integration of TQM with other tools and techniques could significantly improve the service level of the institute and the satisfaction of the customers. The paper specifically highlighted that the role of senior managers in TQM implementation were minimal due lack of TQM awareness and system integration. To improve this, a phase-based TQM framework has been developed and interpreted comprehensively including implementation strategies, possible improvements and integrations. Due to this, the institute was expected to be passionate with regard to TQM and continuous improvement.","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44340655","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 : 2020-09-30DOI: 10.1504/ijqet.2020.10032518
C. Sreerag, M. Srinivas, A. Murty
The world of competition is not only constrained to the discrete cases but also envisages finite and infinite continuous cases of ranks of competitors in a generalised competition. The more applicable and general modelling is possible only through including single ranked competitors as well as the frequency of different ranks or positions. In this article, we propose a mathematical model which deals competition with ranks or positions with various frequency distributions applicable to quality inspection systems. The current article includes the equilibrium positions and failure gates in competitions for a single factor ranking system and discusses the multi-level competition which is more relevant in practical environment. The outcome probability of best, least and intermediate positions are analysed for discrete frequency model with finite ranks and also for continues frequency model with infinite ranks. The article likewise facilitates the feasibility of the model for implementation as a probabilistic inspection technique. The same technique is helpful to ascertain the quality of inspection units in a long term production cycle.
{"title":"Generalised probabilistic ranking competition model with quality inspection technique","authors":"C. Sreerag, M. Srinivas, A. Murty","doi":"10.1504/ijqet.2020.10032518","DOIUrl":"https://doi.org/10.1504/ijqet.2020.10032518","url":null,"abstract":"The world of competition is not only constrained to the discrete cases but also envisages finite and infinite continuous cases of ranks of competitors in a generalised competition. The more applicable and general modelling is possible only through including single ranked competitors as well as the frequency of different ranks or positions. In this article, we propose a mathematical model which deals competition with ranks or positions with various frequency distributions applicable to quality inspection systems. The current article includes the equilibrium positions and failure gates in competitions for a single factor ranking system and discusses the multi-level competition which is more relevant in practical environment. The outcome probability of best, least and intermediate positions are analysed for discrete frequency model with finite ranks and also for continues frequency model with infinite ranks. The article likewise facilitates the feasibility of the model for implementation as a probabilistic inspection technique. The same technique is helpful to ascertain the quality of inspection units in a long term production cycle.","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42248709","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 : 2020-09-30DOI: 10.1504/ijqet.2020.10032526
M. Ershadi, M. Sadeghi, A. Azizi
The present study has provided a framework in order to improve the satisfaction of users of e-commerce sites using quality function deployment (QFD) and WebQual instruments. A structural equation model (SEM) has been developed in order to determine the significance of each aspect of the WebQual model and its significance weight. This study has evaluated the satisfaction of users with the quality of website content, transaction quality and security, usability and service interaction quality, and provided the solutions to improve these factors in form of the QFD method. Results showed the transaction quality and security has the highest priority for improvement. Among all the customers' requirements, the indicators such as a wide range of exchanges, preserving privacy, ease of transaction, the right format, ease of search, the usefulness of transactions, and finally the clear and understandable interactions should be placed in a higher priority for improvement by management.
{"title":"A structural equation method for improving customer satisfaction of e-commerce websites using the hybrid approach of QFD and WebQual","authors":"M. Ershadi, M. Sadeghi, A. Azizi","doi":"10.1504/ijqet.2020.10032526","DOIUrl":"https://doi.org/10.1504/ijqet.2020.10032526","url":null,"abstract":"The present study has provided a framework in order to improve the satisfaction of users of e-commerce sites using quality function deployment (QFD) and WebQual instruments. A structural equation model (SEM) has been developed in order to determine the significance of each aspect of the WebQual model and its significance weight. This study has evaluated the satisfaction of users with the quality of website content, transaction quality and security, usability and service interaction quality, and provided the solutions to improve these factors in form of the QFD method. Results showed the transaction quality and security has the highest priority for improvement. Among all the customers' requirements, the indicators such as a wide range of exchanges, preserving privacy, ease of transaction, the right format, ease of search, the usefulness of transactions, and finally the clear and understandable interactions should be placed in a higher priority for improvement by management.","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42801155","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 : 2020-09-30DOI: 10.1504/ijqet.2020.10032538
A. Badiru
This paper is presented as a quality-insight column designed to spark new research interest in computational views of how rapidly a learning curve declines during a period of prolonged interruption. Specifically, the paper considers the case of the worldwide COVID-19 lockdown that afflicted business, industry, academia, and government. As a result of being barred from practicing their respective functions, workers are prevented from the normal positive effects of being on a learning curve. Instead of performance improvement due to learning curves, there is performance degradation due to the lockdown. Although not enough live data is available yet for a direct modelling, the paper presents a postulated analytical framework that researchers can use later on for empirical modelling of the adverse impacts of the lockdown on learning curves. A decline in learning can translate to a decline in quality of work and quality of products. Mathematical methods suggested in the paper include exponential decay, hyperbolic decline, and half-life learning curves.
{"title":"Quality insight: exponential decay of quality learning curves during COVID-19 lockdown","authors":"A. Badiru","doi":"10.1504/ijqet.2020.10032538","DOIUrl":"https://doi.org/10.1504/ijqet.2020.10032538","url":null,"abstract":"This paper is presented as a quality-insight column designed to spark new research interest in computational views of how rapidly a learning curve declines during a period of prolonged interruption. Specifically, the paper considers the case of the worldwide COVID-19 lockdown that afflicted business, industry, academia, and government. As a result of being barred from practicing their respective functions, workers are prevented from the normal positive effects of being on a learning curve. Instead of performance improvement due to learning curves, there is performance degradation due to the lockdown. Although not enough live data is available yet for a direct modelling, the paper presents a postulated analytical framework that researchers can use later on for empirical modelling of the adverse impacts of the lockdown on learning curves. A decline in learning can translate to a decline in quality of work and quality of products. Mathematical methods suggested in the paper include exponential decay, hyperbolic decline, and half-life learning curves.","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48039848","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 : 2020-01-01DOI: 10.1504/ijqet.2020.10034260
A. Mohammadi, S. Mirghaderi, Zahra Mohit Ghiri
{"title":"Many-objective x-bar control chart using hybrid NSGA-III and DEA","authors":"A. Mohammadi, S. Mirghaderi, Zahra Mohit Ghiri","doi":"10.1504/ijqet.2020.10034260","DOIUrl":"https://doi.org/10.1504/ijqet.2020.10034260","url":null,"abstract":"","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66693258","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 : 2019-01-01DOI: 10.1504/ijqet.2019.10026604
A. Hosseinian, R. Derakhshani, M. Zandieh
In this paper, a multi-objective model for the economic-statistical design of the C-control charts is presented. The proposed model considers that multiple assignable causes can occur during the production process. Then, a hybrid meta-heuristic algorithm is developed to solve the model. The proposed algorithm consists of an improved version of the non-dominated sorting genetic algorithm II (NSGA-II) and the data envelopment analysis (DEA) which is called the IM-NSGA-II-DEA. For the proposed algorithm, new crossover and mutation operators based on the technique for order preference by similarity to ideal solution (TOPSIS) have been designed. After obtaining the non-dominated solutions, the DEA is employed to find the efficient ones. The performance of the IM-NSGA-II is evaluated in comparison with the classical NSGA-II and NRGA. The results of numerical experiments imply that the proposed method is superior to other algorithms in terms of objective function values and several multi-objective metrics.
本文提出了c-控制图经济统计设计的一个多目标模型。该模型考虑了生产过程中可能出现的多种可分配原因。然后，提出了一种混合元启发式算法来求解该模型。该算法由非支配排序遗传算法II (NSGA-II)的改进版本和数据包络分析(DEA)组成，称为IM-NSGA-II-DEA。在该算法中，设计了基于TOPSIS (order preference by similarity to ideal solution)的交叉和变异算子。在得到非支配解后，采用DEA求解有效解。将IM-NSGA-II与经典NSGA-II和NRGA进行了性能比较。数值实验结果表明，该方法在目标函数值和多个多目标度量方面优于其他算法。
{"title":"A hybrid NSGA-II-DEA method for the economic-statistical design of the C-control charts with multiple assignable causes","authors":"A. Hosseinian, R. Derakhshani, M. Zandieh","doi":"10.1504/ijqet.2019.10026604","DOIUrl":"https://doi.org/10.1504/ijqet.2019.10026604","url":null,"abstract":"In this paper, a multi-objective model for the economic-statistical design of the C-control charts is presented. The proposed model considers that multiple assignable causes can occur during the production process. Then, a hybrid meta-heuristic algorithm is developed to solve the model. The proposed algorithm consists of an improved version of the non-dominated sorting genetic algorithm II (NSGA-II) and the data envelopment analysis (DEA) which is called the IM-NSGA-II-DEA. For the proposed algorithm, new crossover and mutation operators based on the technique for order preference by similarity to ideal solution (TOPSIS) have been designed. After obtaining the non-dominated solutions, the DEA is employed to find the efficient ones. The performance of the IM-NSGA-II is evaluated in comparison with the classical NSGA-II and NRGA. The results of numerical experiments imply that the proposed method is superior to other algorithms in terms of objective function values and several multi-objective metrics.","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66692608","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 : 2019-01-01DOI: 10.1504/ijqet.2019.10026613
A. Badiru
In business and industry, the focus is often solely on product quality. This is okay, provided we recognise the multitude of other factors that can impinge on product quality. The premise of this article is that product quality is a function of data quality. As such, data quality is a requirement for product quality. This article presents a combination of the qualitative and quantitative framework for enhancing product quality on the basis of assessing the quality of the input data.
{"title":"Quality insight: data quality is a requirement for product quality","authors":"A. Badiru","doi":"10.1504/ijqet.2019.10026613","DOIUrl":"https://doi.org/10.1504/ijqet.2019.10026613","url":null,"abstract":"In business and industry, the focus is often solely on product quality. This is okay, provided we recognise the multitude of other factors that can impinge on product quality. The premise of this article is that product quality is a function of data quality. As such, data quality is a requirement for product quality. This article presents a combination of the qualitative and quantitative framework for enhancing product quality on the basis of assessing the quality of the input data.","PeriodicalId":38209,"journal":{"name":"International Journal of Quality Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66692649","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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