International Journal of Quality & Reliability Management最新文献

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How does service quality predict loyalty? The serial mediation effects of perceived value and consumer brand identification 服务质量如何预测忠诚度?感知价值和消费者品牌认同的序列中介效应
International Journal of Quality & Reliability Management Pub Date : 2024-07-26 DOI: 10.1108/ijqrm-12-2023-0385
Hasan Emin Gurler
{"title":"How does service quality predict loyalty? The serial mediation effects of perceived value and consumer brand identification","authors":"Hasan Emin Gurler","doi":"10.1108/ijqrm-12-2023-0385","DOIUrl":"https://doi.org/10.1108/ijqrm-12-2023-0385","url":null,"abstract":"PurposeProviding high-quality service for airline companies cannot be overstated, as it directly impacts their survival and competitiveness. Hence, there is an increasing need to measure loyalty in the air transport industry. Loyal customers are highly valued as they are less price-sensitive and require minimal communication efforts. Despite this, there is limited knowledge about the factors that influence a passenger’s level of loyalty towards an airline company. Therefore, understanding the precursors of loyalty is essential. This research investigates the serial mediation effect of consumer brand identification (CBI) and perceived value on the relationship between service quality and loyalty.Design/methodology/approachIn this research, quality is related to loyalty through value and CBI. A conclusive research design was adopted to determine whether value and CBI have a serial mediating effect on the quality-loyalty link. The research framework includes a three-path mediation model.FindingsBased on the analysis of 406 questionnaires, the study concludes that a serial mediation effect of CBI and perceived value on the quality-loyalty relationship exists. The research results indicate that CBI has a greater influence on improving customer loyalty than perceived value.Originality/valueThis study contributes to limited research on the serial mediating effect of value and CBI in the quality-loyalty relationship. It also provides empirical evidence on the determinants of loyalty as part of the Turkish aviation industry. This study highlights the significance of CBI as a critical factor for airlines to maintain their competitiveness in the market.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141799941","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
Analysis of barriers for adopting blockchain in agri-food supply chain management: a decision support framework 在农业食品供应链管理中采用区块链的障碍分析:决策支持框架
International Journal of Quality & Reliability Management Pub Date : 2024-07-25 DOI: 10.1108/ijqrm-03-2023-0078
Naveen Virmani, Rajesh Kumar Singh
{"title":"Analysis of barriers for adopting blockchain in agri-food supply chain management: a decision support framework","authors":"Naveen Virmani, Rajesh Kumar Singh","doi":"10.1108/ijqrm-03-2023-0078","DOIUrl":"https://doi.org/10.1108/ijqrm-03-2023-0078","url":null,"abstract":"PurposeIntegrating digital technologies such as artificial intelligence and blockchain make the agri-food supply chain (ASCM) transparent, resilient and flexible. However, its adoption is quite complex due to various anticipated barriers. So, the presented research purposes to explore and investigate the barriers.Design/methodology/approachThis study employs hybrid approach including Best-Worst Method (BWM) and Graph Theoretic Approach (GTA). Data were collected from industry experts employed in the agri-food sector and analyzed by means of standard operating procedures.FindingsGTA results show that Technological barriers have the highest barrier intensity. Moreover, BWM results show that “Increased operational complexity” is the topmost barrier to adopting blockchain in ASCM. “Lack of interoperability” ranks second among the identified barriers.Research limitations/implicationsThe results benefit the managers, practitioners and researchers to understand the anticipated barriers so that necessary strategies can be developed, and organizations can become more resilient, agile, transparent and traceable.Originality/valueThe presented work is the first to develop a mathematical model and assess the industry’s eagerness to adopt blockchain in ASCM. The proposed framework will greatly benefit the stakeholders working in agri-food sector.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141803960","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
Unraveling the interplay between supply chain analytics and healthcare supply chain performance: establishing an underlying mechanism and a boundary condition 揭示供应链分析与医疗保健供应链绩效之间的相互作用:建立内在机制和边界条件
International Journal of Quality & Reliability Management Pub Date : 2024-07-19 DOI: 10.1108/ijqrm-12-2023-0400
Francis Kamewor Tetteh, Dennis Kwatia Amoako, Andrews Kyeremeh, Gabriel Atiki, Francisca Delali Degbe, Prince Elton Dion Nyame
{"title":"Unraveling the interplay between supply chain analytics and healthcare supply chain performance: establishing an underlying mechanism and a boundary condition","authors":"Francis Kamewor Tetteh, Dennis Kwatia Amoako, Andrews Kyeremeh, Gabriel Atiki, Francisca Delali Degbe, Prince Elton Dion Nyame","doi":"10.1108/ijqrm-12-2023-0400","DOIUrl":"https://doi.org/10.1108/ijqrm-12-2023-0400","url":null,"abstract":"Purpose The coronavirus disease 2019 (COVID-19) pandemic represents one of the most significant disruptions to supply chains (SCs), stimulating both practitioners and scholars to seek ways to enhance supply chain performance (SCP). Recent advancements in technology, particularly supply chain analytics (SCA) technologies, offer promising avenues for mitigating risks associated with SC disruptions like those posed by the COVID-19 pandemic. However, the existing literature lacks a comprehensive analysis of the connection between SCA and healthcare SC (HSC) performance. To address this research gap, we employed the dynamic capability perspective to investigate the mediating roles of supply chain innovation (SCI), resilience (SCR) and flexibility (SCF) in the relationship between SCA and HSC performance. The study further examined the moderating role of a data-driven culture (DDC).Design/methodology/approach The proposed model was tested using survey data from 374 managers of healthcare facilities in Ghana. SPSS and Amos were used to analyze the data gathered.Findings The results showed that while SCA may drive HSC performance, the presence of SCI, SCR and SCF may serve as channels to drive enhanced HSC performance. Additionally, we also found that different levels of a DDC induce varying effects of SCA on SCI, SCR and SCF.Research limitations/implications The study’s results have theoretical and practical implications, offering valuable insights for the advancement of SCA in healthcare literature. They also deepen SC managers’ comprehension of how and when SCA can boost HSC performance. However, as the study was limited to healthcare facilities in Ghana, its findings may not be universally applicable.Originality/value This study contributes to the literature by demonstrating that SCI, SCR, SCF and a DDC could serve as transformative mechanisms to reap superior HSC outcomes. This study also offers contemporary guidance to managers regarding SCA investment decisions.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141821050","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
The mediation role of innovation in the relationship between total quality management and performance of small and medium scale enterprises 创新在全面质量管理与中小型企业绩效关系中的中介作用
International Journal of Quality & Reliability Management Pub Date : 2024-07-18 DOI: 10.1108/ijqrm-12-2021-0427
Francis Kamewor Tetteh, Benjamin Nyantakyi, Kwame Owusu Kwateng, Hannah Vivian Osei
{"title":"The mediation role of innovation in the relationship between total quality management and performance of small and medium scale enterprises","authors":"Francis Kamewor Tetteh, Benjamin Nyantakyi, Kwame Owusu Kwateng, Hannah Vivian Osei","doi":"10.1108/ijqrm-12-2021-0427","DOIUrl":"https://doi.org/10.1108/ijqrm-12-2021-0427","url":null,"abstract":"PurposeThis study examined the mediation-moderation role of innovation and market dynamism in the association between total quality management (TQM) practices and the performance of small and medium-scale enterprises' (SMEs') performance with empirical evidence from sub-Saharan Africa.Design/methodology/approachUsing a questionnaire, the research model developed was tested with responses from 203 owners and managers of SMEs in Ghana. The analyses were done using Statistical Package for the Social Sciences (SPSS) and Smart Partial Least Squares Structural Equation Modeling (PLS-SEM).FindingsThe innovation initiatives partially and fully mediated the relationship between TQM practices and the performance of SMEs. Also, the indirect effect of TQM practices of SMEs on performance through innovation initiatives was negatively moderated by market dynamism.Practical implicationsThe study contributes to the TQM literature by validating the indirect and direct relationship between TQM practices and performance in the context of SMEs in a developing region.Originality/valueThis paper presents a novel understanding of the relationship between TQM and SMEs in developing regions of the world. The paper serves as a guide for SME owners and managers to improve the performance of their organizations through TQM practices.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141824168","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
Lean thinking and risk management in healthcare organizations: a systematic literature review and research agenda 医疗机构的精益思维和风险管理:系统文献综述和研究议程
International Journal of Quality & Reliability Management Pub Date : 2024-07-01 DOI: 10.1108/ijqrm-06-2023-0210
Luis Mendes, Grazielle França
{"title":"Lean thinking and risk management in healthcare organizations: a systematic literature review and research agenda","authors":"Luis Mendes, Grazielle França","doi":"10.1108/ijqrm-06-2023-0210","DOIUrl":"https://doi.org/10.1108/ijqrm-06-2023-0210","url":null,"abstract":"PurposeHealthcare organizations have been facing challenges due to high costs and low efficiency in health services. The growth of costs and losses caused by avoidable mistakes lead to the search for solutions, and Health Lean Management appears as a potential solution to help in solving service quality problems, as well as reducing risks. This study aims to analyse the state of the art in the literature centred on the Lean approach in the context of risk management in healthcare organizations, and to identify new research opportunities, highlighting possible lines of future research.Design/methodology/approachFollowing a systematic literature review approach, 51 papers were considered relevant for this research, and reviewed to explore the development of literature in this area.FindingsBased on the results, five main research streams were identified: (1) risk management oriented towards patient safety; (2) risk management oriented towards employee safety; (3) importance of attitudes and behaviours in risk reduction projects; (4) Lean tools used in healthcare risk management and (5) Integration of approaches. Moreover, several shortcomings were identified in literature.Originality/valueIdentified shortcomings represent significant opportunities for further research development.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141717092","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
The impact of institutional logics on specifications quality: investigating the mediation effects of legitimacy and stewardship behaviour 制度逻辑对规范质量的影响:研究合法性和管理行为的中介效应
International Journal of Quality & Reliability Management Pub Date : 2024-06-13 DOI: 10.1108/ijqrm-10-2023-0302
Nabiira Nantongo, Matthew Kalubanga, Joseph Ntayi, Bonny Bagenda, Beatrice Nyakeishiki
{"title":"The impact of institutional logics on specifications quality: investigating the mediation effects of legitimacy and stewardship behaviour","authors":"Nabiira Nantongo, Matthew Kalubanga, Joseph Ntayi, Bonny Bagenda, Beatrice Nyakeishiki","doi":"10.1108/ijqrm-10-2023-0302","DOIUrl":"https://doi.org/10.1108/ijqrm-10-2023-0302","url":null,"abstract":"PurposeThis study aims to examine the relationship between institutional logics and specifications quality, and how this relationship is mediated by the legitimacy of the procurement process and stewardship behaviour.Design/methodology/approachThis study draws on insights from institutional logics theory, and legitimacy and stewardship behaviour literature. We conducted an extended literature review to gain a comprehensive understanding of “institutional logics” and their manifestations in organizational contexts, utilizing the 2000–2024 data collected from the EBSCO, Scopus and Web of Science databases, complemented with Google Scholar. We gather that institutional logics manifest in several forms, and that while some organizations may thrive on a single logic, in certain contexts institutional logics can manifest in combinations – “multiple logics or hybrids”. Based on this understanding, we developed testable research hypotheses, predicting the influences of institutional logics – professional logic, efficient service logic and delivery (market) logic, on legitimacy, stewardship behaviour and specifications quality. We then carried out an empirical study, adopting a quantitative cross-sectional survey design with a self-administered questionnaire to test the hypothesized relationships. The empirical data were obtained from 162 procuring and disposing entities in Uganda and analyzed using the partial least squares structural equation modelling technique.FindingsThe study findings reveal that institutional logics exert a strong positive effect on the legitimacy of the procurement process and on stewardship behaviour, which, in turn, both positively influence specifications quality.Research limitations/implicationsThe study findings have implications for theory and practice. The study findings provide useful insights that support the conceptual and theoretical development of institutional logics theory and applications in procurement literature. In addition, the study findings enhance procurement managers’ understanding of the mechanisms through which institutional logics can foster specifications quality. However, considering the fact that the study was conducted in a single country context, and focused on the public sector only, the findings of the study might not be generalizable globally.Originality/valueThis study contributes to established knowledge about quality management and procurement by examining the legitimacy of the procurement process and stewardship behaviour of those involved in procurement processes as mechanisms through which procuring entities are able to use institutional logics to enhance specifications quality. In addition, the study highlights areas for future research that may be explored to increase understanding of the value of institutional logics in ensuring specifications quality, and the link between specifications quality and the general performance of procuring entities.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141345721","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
Logical analysis of data in predictive failure detection and diagnosis 预测性故障检测和诊断中的数据逻辑分析
International Journal of Quality & Reliability Management Pub Date : 2024-06-12 DOI: 10.1108/ijqrm-02-2024-0048
Zhixuan Shao, Mustafa Kumral
{"title":"Logical analysis of data in predictive failure detection and diagnosis","authors":"Zhixuan Shao, Mustafa Kumral","doi":"10.1108/ijqrm-02-2024-0048","DOIUrl":"https://doi.org/10.1108/ijqrm-02-2024-0048","url":null,"abstract":"PurposeThis study aims to address the critical issue of machine breakdowns in industrial settings, which jeopardize operation economy, worker safety, productivity and environmental compliance. It explores the efficacy of a predictive maintenance program in mitigating these risks by proactively identifying and minimizing failures, thereby optimizing maintenance activities for higher efficiency.Design/methodology/approachThe article implements Logical Analysis of Data (LAD) as a predictive maintenance approach on an industrial machine maintenance dataset. The aim is to (1) detect failure presence and (2) determine specific failure modes. Data resampling is applied to address asymmetrical class distribution.FindingsLAD demonstrates its interpretability by extracting patterns facilitating the failure diagnosis. Results indicate that, in the first case study, LAD exhibits a high recall value for failure records within a balanced dataset. In the second case study involving smaller-scale datasets, enhancement across all evaluation metrics is observed when data is balanced and remains robust in the presence of imbalance, albeit with nuanced differences in between.Originality/valueThis research highlights the importance of transparency in predictive maintenance programs. The research shows the effectiveness of LAD in detecting failures and identifying specific failure modes from diagnostic sensor data. This maintenance strategy exhibits its distinction by offering explainable failure patterns for maintenance teams. The patterns facilitate the failure cause-effect analysis and serve as the core for failure prediction. Hence, this program has the potential to enhance machine reliability, availability and maintainability in industrial environments.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141354725","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
Leveraging Lean Six Sigma principles in an Indian tertiary care hospital: a case study 在印度一家三级医疗保健医院运用精益六西格玛原则:案例研究
International Journal of Quality & Reliability Management Pub Date : 2024-06-12 DOI: 10.1108/ijqrm-01-2024-0025
P. R. Srijithesh, E. V. Gijo, Pritam Raja, S. Bhat, S. Mythirayee, A. Taallapalli, Girish B. Kulkarni, Jitendra Siani, H.R. Aravinda
{"title":"Leveraging Lean Six Sigma principles in an Indian tertiary care hospital: a case study","authors":"P. R. Srijithesh, E. V. Gijo, Pritam Raja, S. Bhat, S. Mythirayee, A. Taallapalli, Girish B. Kulkarni, Jitendra Siani, H.R. Aravinda","doi":"10.1108/ijqrm-01-2024-0025","DOIUrl":"https://doi.org/10.1108/ijqrm-01-2024-0025","url":null,"abstract":"PurposeWorkflow optimisation is crucial for establishing a viable acute stroke (AS) intervention programme in a large tertiary care centre. This study aims to utilise Lean Six Sigma (LSS) principles to enhance the hospital's workflow.Design/methodology/approachThe Action Research methodology was used to implement the project and develop the case study. The study took place in a large tertiary care academic hospital in India. The Define-Measure-Analyse-Improve-Control approach optimised the workflow within 6 months. Lean tools such as value stream mapping (VSM), waste audits and Gemba were utilised to identify issues involving various stakeholders in the workflow. Sigma-level calculations were used to compare baseline, improvement and sustainment status. Additionally, statistical techniques were effectively employed to draw meaningful inferences.FindingsLSS tools and techniques can be effectively utilised in large tertiary care hospitals to optimise workflow through a structured approach. Sigma ratings of the processes showed substantial improvement, resulting in a five-fold increase in clinical outcomes. Specifically, there was a 43% improvement in outcome for patients who underwent acute stroke revascularisation. However, certain sigma ratings deteriorated during the control and extended control (sustainment) phases. This indicates that ensuring the sustainability of quality control interventions in healthcare is challenging and requires continuous auditing.Research limitations/implicationsThe article presents a single case study deployed in a hospital in India. Thus, the generalisation of outcomes has a significant limitation. Also, the study encounters the challenge of not having a parallel control group, which is a common limitation in quality improvement studies in healthcare. Many studies in healthcare quality improvement, including this one, are limited by minimal data on long-term follow-up and the sustainability of achieved results.Originality/valueThis study pioneers the integration of LSS methodologies in a large Indian tertiary care hospital, specifically targeting AS intervention. It represents the first LSS case study applied in the stroke department of any hospital in India. Whilst most case studies discuss only the positive aspects, this article fills a critical gap by unearthing the challenges of applying LSS in a complex healthcare setting, offering insights into sustainable quality improvement and operational efficiency. This case study contributes to the theoretical understanding of LSS in healthcare. It showcases its real-world impact on patient outcomes and process optimisation.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141352782","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
The impact of the day of the week on the financial market: an empirical investigation on cryptocurrencies 星期对金融市场的影响:对加密货币的实证调查
International Journal of Quality & Reliability Management Pub Date : 2024-06-03 DOI: 10.1108/ijqrm-03-2023-0092
S. Arzova, Ayben Koy, B. Sahin
{"title":"The impact of the day of the week on the financial market: an empirical investigation on cryptocurrencies","authors":"S. Arzova, Ayben Koy, B. Sahin","doi":"10.1108/ijqrm-03-2023-0092","DOIUrl":"https://doi.org/10.1108/ijqrm-03-2023-0092","url":null,"abstract":"PurposeThis study investigates the effect of the day of the week on the volatility of cryptocurrencies. Thus, we reveal investors' perceptions of the day of the week.Design/methodology/approachThe EGARCH model consists of the day of the week for 2019–2022 and the volatility of 11 cryptocurrencies.FindingsEmpirical results show that the weekend harms cryptocurrency volatility. Also, there was positive cryptocurrency volatility at the beginning of the week. Our findings show that weekdays and weekends significantly impact cryptocurrency volatility. Besides, cryptocurrency investors are sensitive to market movements, disclosures, and regulations during the week. Holiday mode and cognitive shortcuts may cause cryptocurrency traders to remain passive on weekends.Research limitations/implicationsThis study has some limitations. We include 11 cryptocurrencies in the analysis by limiting cryptocurrencies according to market capitalizations. Further studies may analyze a larger sample. In addition, further studies may examine the moderator and mediator effects of other financial instruments.Practical implicationsThe empirical results have research, social and practical conclusions from different aspects. Our analysis may contribute to determining trading strategies, risk management, market efficiency, regulatory oversight, and investment decisions in the cryptocurrency market.Originality/valueThe calendar effect in financial markets has extensive literature. However, cryptocurrencies' weekday and weekend effect needs to be adequately analyzed. Besides, studies analyzing cryptocurrency volatility are limited. We contribute to the literature by investigating the impact of days of the week on cryptocurrency volatility with a large sample and current data.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141268975","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
Availability analysis of imperfect repairable system subject to inspection 对接受检查的不完善可修复系统进行可用性分析
International Journal of Quality & Reliability Management Pub Date : 2024-06-03 DOI: 10.1108/ijqrm-10-2023-0335
Ritu Gupta, Sudeep Kumar
{"title":"Availability analysis of imperfect repairable system subject to inspection","authors":"Ritu Gupta, Sudeep Kumar","doi":"10.1108/ijqrm-10-2023-0335","DOIUrl":"https://doi.org/10.1108/ijqrm-10-2023-0335","url":null,"abstract":"PurposeThis work examines a repairable machining system’s reliability by considering multiple failure scenarios, including individual component failures, hardware and software malfunctions, failures resulting from shared causes and failures caused by human error. When a system is susceptible to several modes of failure, the primary goal is to forecast availability and other reliability metrics as well as to calculate the expected profit of the repairable machining system.Design/methodology/approachThe process of recovering after a system failure involves inspecting the system and fixing any malfunctions that may have occurred. The repair procedures for all kinds of faults are taken to follow a general distribution to represent real-time circumstances. We develop a non-Markovian stochastic model representing different system states that reveal working, failed, degraded, repair and delayed repair states. Laplace transformation and the supplementary variable technique are used to assess the transient states of the system.FindingsAnalytical expressions for system performance indices such as availability, reliability and cost-benefit analysis are derived. The transient probabilities when the system experiences in different states such as failed, degraded and delayed states are computed. The results obtained are validated using Mathematica software by performing a numerical illustration on setting default values of unknown parameters. This ensures the accuracy and reliability indices of the analytical predictions.Originality/valueBy methodically examining the system in its several states, we will be able to spot possible problems and offer efficient fixes for recovery. The system administrators would check to see if a minor or major repair is needed, or if a replacement is occasionally taken into consideration to prevent recurring repairs.","PeriodicalId":506639,"journal":{"name":"International Journal of Quality & Reliability Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141271211","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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