Total Quality Science最新文献_第4页

Optimizing Opportunistic Maintenance by Using a Semi-Markov Decision Process 基于半马尔可夫决策过程的机会维护优化

Total Quality Science Pub Date : 2021-10-14 DOI: 10.17929/tqs.6.91

Yuki Odajima, Jin Lu

引用次数: 1

A study on promotion method of effective initiatives for establishment of the Integrated Community Care System 建立综合社区照护系统有效措施的推广方法研究

Total Quality Science Pub Date : 2021-10-14 DOI: 10.17929/tqs.6.70

S. Furukawa, Chisato Kajihara, Akira Shindo, Masahiko Munechika

引用次数: 0

Setting Control Limits in a Multivariate Exponentially Weighted Moving Likelihood Control Chart 在多元指数加权移动似然控制图中设定控制极限

Total Quality Science Pub Date : 2021-10-14 DOI: 10.17929/tqs.6.84

Takumi Saruhashi, Masato Ohkubo, Yuma Ueno, Yasushi Nagata

引用次数: 0

Comprehensive description of main effects and interactions in Plackett Burman design 对Plackett Burman设计中主要效果和相互作用的综合描述

Total Quality Science Pub Date : 2021-02-18 DOI: 10.17929/TQS.6.43

Yo Oishi, S. Yamada

{"title":"Comprehensive description of main effects and interactions in Plackett Burman design","authors":"Yo Oishi, S. Yamada","doi":"10.17929/TQS.6.43","DOIUrl":"https://doi.org/10.17929/TQS.6.43","url":null,"abstract":": Plackett Burman designs are used to estimate main effects because the columns assigned main effects are mutually orthogonal. However, correlations between estimates of a main effect column and a two-factor interaction column are not orthogonal in general. There are variations in the magnitude of correlation depending on the size of Plackett Burman design. For example, correlation coefficients between a main effect and a two-factor interaction are either 0 or ± 0.33 in Plackett Burman design N=12. However, most of them are ± 0.2 and some of them are 0.6 in Plackett Burman design N=20. When a correlation coefficient between main effects and two-factor interactions is significantly large, analysis results may be depart from the true status. Therefore, in this study, we comprehensively describe correlation coefficients between a main effect and a two-factor interaction for all designs proposed by the Plackett and Burman designs such that N=8,...,100. In addition, for designs that have large correlation coefficients, they are classified according to how to construct a design table and examined in detail. We describe certain rules in combination of a main effect and a two-factor interaction with large correlation coefficient. We also show how to construct designs that avoids large correlation based on the rules. University. He teaches applied statistics and quality management at undergraduate and graduate schools. His research interests focus on total quality management, design of experiments for quality, statistical quality control and so forth.","PeriodicalId":301168,"journal":{"name":"Total Quality Science","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115102633","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

A case study on integration of vehicle defect and recall information analysis 汽车缺陷与召回信息集成分析案例研究

Total Quality Science Pub Date : 2021-02-18 DOI: 10.17929/TQS.6.52

Yasuyuki Yamamoto, S. Yamada

引用次数: 1

Construction of Fractional Factorial Design Considering Accuracy and Robustness in the Estimation of Main Effects 考虑主效应估计准确性和稳健性的分数析因设计的构建

Total Quality Science Pub Date : 2021-01-27 DOI: 10.17929/TQS.6.11

Y-h. Taguchi, S. Yamada

{"title":"Construction of Fractional Factorial Design Considering Accuracy and Robustness in the Estimation of Main Effects","authors":"Y-h. Taguchi, S. Yamada","doi":"10.17929/TQS.6.11","DOIUrl":"https://doi.org/10.17929/TQS.6.11","url":null,"abstract":": The 𝐷𝐷 -optimal criterion evaluates the accuracy of estimators comprehensively, with assuming a model that describes the relationship between response and factors in appropriate manner. By using a design with high 𝐷𝐷 optimality level, we can estimate parameters accurately under the assumed model. However, it should be noted that there exists bias in the estimator if active factors and their interactions are not included in the model. In order to reduce the bias of estimators caused by not incorporating active two-factor interactions in the model, we construct experimental design considering both accuracy and robustness against the existence of interactions. This research constructs robust fractional factorial design against the existence of two-factor interactions by distributing low level of confounding on two-factor interactions into main effects. New designs considering robustness and accuracy are obtained by multiple criteria optimization with this new criterion of robustness and 𝐷𝐷 𝑓𝑓 criterion that is a sort of 𝐷𝐷 -optimality. Various algorithms for constructing optimal designs have been proposed such as 𝑘𝑘 exchange and coordinate exchange. This study use the column wise-pairwise algorithm because of the advantage that it can be applied to supersaturated design. Also, we carry out multiple criteria optimization with reference to the method proposed by a previous study. In this way, we obtained 16×15 and 12×16 design matrixes, which is more robust to the existence of two-factor interactions than the conventional design.","PeriodicalId":301168,"journal":{"name":"Total Quality Science","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121609591","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

A Stochastic Degradation Model Based on the Birnbaum-Saunders Distribution 基于Birnbaum-Saunders分布的随机退化模型

Total Quality Science Pub Date : 2021-01-27 DOI: 10.17929/TQS.6.1

K. Fujita, H. Nagatsuka

{"title":"A Stochastic Degradation Model Based on the Birnbaum-Saunders Distribution","authors":"K. Fujita, H. Nagatsuka","doi":"10.17929/TQS.6.1","DOIUrl":"https://doi.org/10.17929/TQS.6.1","url":null,"abstract":": Products or systems degrade over time. Degradation over time is often modeled by stochastic processes to account for inherent randomness. Based on the assumption of additive accumulation of degradation, a family of degradation stochastic processes based on the Lévy process (the Wiener, gamma and inverse Gaussian (IG) processes are members of this family of processes) has been well studied in the literature. Recently, degradation stochastic model based on the generalized inverse Gaussian distribution was provided. This model is a generalization of the prominent existing degradation models in a sense, under the mild conditions. In this study, we propose a stochastic degradation model based on the Birnbaum-Saunders (BS) distribution. The BS distribution can be obtained as an approximation of an IG distribution. The BS distribution is proposed as the fatigue failure life distribution based on a physical consideration. The maximum likelihood estimation of the proposed model is also developed. Four case applications are performed to demonstrate the advantages of the proposed model, based on the well-known real degradation data sets of the GaAs laser devices and crack sizes of three kinds of specimens, and also a simulation study is conducted.","PeriodicalId":301168,"journal":{"name":"Total Quality Science","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125455067","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

A study on design method of questionnaire survey in Integrated Community Care System 综合社区照护系统问卷调查设计方法研究

Total Quality Science Pub Date : 2020-03-05 DOI: 10.17929/tqs.5.92

S. Furukawa, Masahiko Munechika, Chisato Kajihara

{"title":"A study on design method of questionnaire survey in Integrated Community Care System","authors":"S. Furukawa, Masahiko Munechika, Chisato Kajihara","doi":"10.17929/tqs.5.92","DOIUrl":"https://doi.org/10.17929/tqs.5.92","url":null,"abstract":": In Japan, rapid population aging has called for the provision of contiguous medical and long-term care services to the elderly. In this situation, the Ministry of Health, Labor and Welfare is promoting the establishment of an Integrated Community Care System that can appropriately provide various daily life support services. This system requires cooperation of relevant organizations such as hospitals, nursing facilities, and pharmacies in an area. In order to measure the state of cooperation and identify the issues in establishing the Integrated Community Care System, a questionnaire survey is executed to these organizations. However, there is no clarity on an appropriate design of the questionnaire survey, which can accurately identify the issues. As a result, there were problems with the conventional questionnaire survey, and thus, the results obtained by the conventional questionnaire survey cannot be utilized to identify such issues. The purpose of this study is to propose a design method of the questionnaire survey, which can identify issues accurately. First, we analyzed the conventional questionnaire and survey results to clarify problems. Thereafter, we considered the measures to overcome these problems and proposed an appropriate design for questionnaire survey. We confirmed that the questionnaire was improved by the proposed method.","PeriodicalId":301168,"journal":{"name":"Total Quality Science","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122988653","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

A study on the psychological change of consumer based on AIDAS model 基于AIDAS模型的消费者心理变化研究

Total Quality Science Pub Date : 2020-01-25 DOI: 10.17929/tqs.5.53

Mana Takaya, Haruka Yamashita

{"title":"A study on the psychological change of consumer based on AIDAS model","authors":"Mana Takaya, Haruka Yamashita","doi":"10.17929/tqs.5.53","DOIUrl":"https://doi.org/10.17929/tqs.5.53","url":null,"abstract":": Many companies need to know how to appeal to consumers in favor of their products and services by broadcasting commercial messages (CMs) through TV. CMs are expected to create and nurture the best image of the company and the products among consumers, and to promote the purchasing activities of consumers through consumer viewing. However, these effects are difficult to produce without strategies. CMs should be designed with the appropriate concept and content. Therefore, there is a need to recognize what stimulates the psychological change in consumers leading to purchase activity: that is, the physical change of recognizing the item and buying the item. Subsequently, and the element(s) of the physical change should be analyzed to shed light on the appropriate target consumers for designing CMs. In this study, we focus on a popular yogurt brand in Japan called “Meiji’s Purobio yogurt R-1”, analyzing the psychological change in consumers attributed to CMs on TV based on the attributes of 3,000 consumers’ data and their TV browsing history. For grasping the psychological state of consumers, we apply the attention, interest, desire, action, satisfaction model and define the consumers’ five psychological states based on questionnaire data. The factors of CMs with effects on consumers in each psychological state are clarified using two clustering approaches.","PeriodicalId":301168,"journal":{"name":"Total Quality Science","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133218143","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

Control Charts Based on Hierarchical Bayesian Modeling 基于层次贝叶斯建模的控制图

Total Quality Science Pub Date : 2020-01-25 DOI: 10.17929/tqs.5.72

Seiya Kadoishi, Hironobu Kawamura

{"title":"Control Charts Based on Hierarchical Bayesian Modeling","authors":"Seiya Kadoishi, Hironobu Kawamura","doi":"10.17929/tqs.5.72","DOIUrl":"https://doi.org/10.17929/tqs.5.72","url":null,"abstract":": Control charts are a representative method of statistical process control. Control charts make it possible to effectively manage the manufacturing process but it assumes the availability of large historical data sets. In the high-mix, low-volume production environment that has become a mainstream in recent years, sufficient samples for estimating process parameters cannot be obtained often. In such a situation, the control chart does not function properly. In addition, in manufacturing processes such as cutting, process averages can change due to deterioration even if the process operates in the in-control state, leading to type I error increases. Therefore, herein, we use hierarchical Bayesian modeling to propose control charts that function appropriately for trendy data sets in high-mix, low-volume production. We then show the usefulness of such an approach by comparing with a conventional method. Since hierarchical Bayesian modeling makes it possible to assume the same distribution for parameters of various types, it is possible to use all the information to estimate parameters comprehensively. This capability makes the new approach effective for high-mix, low-volume production. proposes control charts based on hierarchical Bayesian modeling for trendy data sets in a high-mix, low-volume production. Hierarchical Bayesian modeling","PeriodicalId":301168,"journal":{"name":"Total Quality Science","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124606118","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: 2