• Journal of Korean Society for Quality Management
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• v.27 no.1
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• pp.165-194
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• 1999

Taguchi's parameter design seeks proper choice of levels of controllable factors (Parameters in Taguchi's terminology) that makes the qualify characteristic of a product optimal while making its variability small. This aim can be achieved by response surface techniques that allow flexibility in modeling and analysis. In this article, a collection of response surface modeling and analysis techniques is proposed to deal with the multiresponse optimization problem in experimentation with Taguchi's signal and noise factors.

• International Journal of Quality Innovation
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• v.8 no.1
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• pp.76-86
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• 2007

This paper reports on a study investigating key attributes of service recovery strategies in internet shopping mall. In theses day, service recovery has received important attention in the service operation management literature. Service recovery involves those actions designed to resolve problems, alter negative attitudes of dissatisfied consumers and to ultimately retain these customers. The study examined that service recovery strategies (apology, compensation) impact on the customer satisfaction. And customer satisfaction impacts on customer loyalty with SEM (Structural Equation Modeling). This study can be used a strategic implication for internet shopping mall managers to develop successful service recovery strategies.

• Spatial Information Research
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• v.21 no.6
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• pp.91-98
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• 2013

Government introduces a Total Maximum Daily Loads(TMDL) which can be implemented for total pollutant amounts in 2004. Normally, the local governments have been calculated the amounts of pollutant discharge of each watershed using a water quality model. However, among the input data to use the water quality model, creating a schematic diagram of the stream or the modeling usually requires considerable amount of time and efforts due to the manual work. Therefore, this study tried to develop an algorithm which automates the creation of a schematic diagram for water quality modeling using the Korean Reach File capable of river network analysis. Further, this study creates a schematic diagram with the shape of a stream utilizing GIS capabilities. The diagram can be easily analyzed with overlapping various spatial information such as pollution sources and discharge points. This study mainly has automated element segmentation algorithm to divide streamflows into equal distance using line graphic data of Koran Reach File. Also, automated attribute input algorithm has also been developed to enable to insert element order and type into elements using point graphic data of Korean Reach File. For the verification of the developed algorithm, the algorithm was applied to kyungan stream basin to see the acceptable results. To conclude, it was possible to automate generating of schematic diagram of water quality model and it is expected to be able to save time and cost required for the water modeling. In future study, it is necessary to develop an automatic creation system of various types of input data for water quality modeling and this will lead to relatively easier and simple water quality modeling.

• Journal of The Korean Digital Architecture Interior Association
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• v.10 no.3
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• pp.11-18
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• 2010

Cost estimation through fast and correct quantity take offs are crucial in the process of construction project. The existing methods for cost estimation are mainly based on 2D-based drawings and the estimation result tends to be different according to the estimator's experience, the quality and quantity of used information and estimation time. To solve these problems, the domestic construction industry have recently tried to use the data extracted from 3D data modeling based on BIM(Building Information Modeling) in order to achieve more accurate and objective cost estimation. However it tends to increase dramatically the quantity of information that can be used in cost estimation by estimators. Therefore in order to achieve quality information data from 3D data modeling, the characteristics of the project should be reflected on the 3D model and it is most important to extract information only for cost estimation from the whole 3D model fast and accurately. Thus this study aims to propose the 3D modeling method through Data Normalization which maximizes the usability of 3D Data modeling in cost estimation process.

• Journal of Korean Society for Quality Management
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• v.42 no.3
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• pp.373-386
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• 2014

Purpose: This paper seeks to analyze the relationship between project sponsor roles and project manager competencies which may account for project performance quality. Methods: After an extensive literature review, the structural equation modeling was conducted test the research model. The data was collected from project manager training course attendees by the questionnaire. Results: The results of structural equation modeling show that project sponsor roles effect on project manager competencies. Project manager competencies have a positive effect on project performance quality. Conclusion: The authors demonstrate that project sponsor external roles are related positively to project performance quality. And project manager professionalism has a positive effect on project manager communication. A number of significant findings are reported including the empirical verification that project sponsor roles, and project manager competencies may all be directly related to project performance quality.

• Journal of Korean society of Dental Hygiene
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• v.12 no.5
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• pp.1029-1038
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• 2012

Objectives : This study was examine a relationship those variables with health-related quality(HRQOL) of life in the elderly and provide basic information on HRQOL and evidence for establishing effective health policies for old ages ultimately. Methods : This research was conducted through individual interviews using a structured questionnaire and oral status examinations of 600 residents The data have been analyzed using $X^2$-test through PASW Statistics 18.0.0(SPSS Korea Datasolution Inc.) and Structural Equation Modeling through LISREL ver8.8. Results : According to the Structural Equation Modeling, independent variables which influence the health-related quality of life are as follows: sex the highest, followed by existence of chronic diseases, perceived health, age, perceived oral health the lowest. Parameters are as follows: oral health-related quality of life the highest, followed by subjective oral symptoms, and oral health status the lowest. Conclusions : In order to improve the quality of life of olds, it is not only necessary to improve perceived health through reduce of chronic diseases, but is also required to regular tooth check-up to reduce subjective oral symptoms for increase oral health-related quality of life.

• Journal of Korean Academy of Nursing
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• v.42 no.5
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• pp.699-708
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• 2012

Purpose: This study was designed to test structural equation modeling of the quality of life of pre-dialysis patients, in order to provide guidelines for the development of interventions and strategies to improve the quality of life of patients with Chronic Kidney Disease (CKD). Methods: Participants were patients who visited the nephrology outpatient department of a tertiary hospital located in Seoul. Data on demographic factors, social support, nutritional status, physical factors and biobehavioral factors and quality of life were collected between March 4 and March 31, 2011. Results: In the final analysis 208 patients were included. Of the patients 42% were in a malnourished state. Anxious or depressed patients accounted for 62.0%, 72.6%, respectively. Model fit indices for the hypothetical model were in good agreement with the recommended levels (GFI=.94 and CFI=.99). Quality of life in pre-dialysis patients with CKD was significantly affected by demographic factors, social support, nutritional status, physical factors and biobehavioral factors. Biobehavioral factors had the strongest and most direct influence on quality of life of patients with CKD. Conclusion: In order to improve the quality of life in pre-dialysis patients with CKD, comprehensive interventions are necessary to assess and manage biobehavioral factors, physical factors and nutritional status.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.4
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• pp.929-937
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• 2021

This present research seeks to explore the empirical evidence about the relation between quality of destination and Islamic attribute of destination on tourist satisfaction. This research was conducted at the tourism sector in West Java, Indonesia. The participants were Muslim foreign tourists who were traveling to West Java, Indonesia. The total number of participants in the research was 200. Data collection was carried out using a questionnaire. Hypotheses were tested using structural equation modeling methods with AMOS version 23. The exogenous variables in this research consisted of the quality of the destination and Islamic attribute of destination. Tourist satisfaction was an endogenous variable in this research. We used a quantitative approach and structural equation modeling to examine the research hypotheses. The results showed that there was a positive and significant effect of the quality of destination on the tourist satisfaction, and the quality of destination positively affected Islamic attribute of destination, but Islamic attribute of destination had no significant effect on tourist satisfaction. We also found that Islamic attribute of destination did not mediate the relation between quality of destination and tourist satisfaction. We provided recommendations to strengthen or improve the quality of destination in order to increase tourist satisfaction.

• Journal of Korean Clinical Nursing Research
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• v.27 no.1
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• pp.23-34
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• 2021

Purpose: The purpose of this study is to examine the mediating effect of professional quality of life among hospital nurses in the effects of workplace bullying, social support and resilience on retention intention. Methods: A descriptive and cross-sectional study was conducted on 414 hospital nurses who worked for at least two months at a general hospital in the Seoul metropolitan area. The data were analyzed using IBM SPSS 23.0/AMOS 22.0 programs and employed reliability verification, descriptive statistics include frequency analysis, confirmatory factor analysis, structural equation modeling, and bootstrapping. Results: As a result of the study's structural modeling verification, workplace bullying had a negative effect, social support had a positive effect, resilience had a positive effect on professional quality of life, and professional quality of life had a positive effect on retention intention. Also, workplace bullying, social support, and resilience did not directly impact on retention intention. However, the professional quality of life had a complete mediating effect in the relationships between workplace bullying, social support, resilience and retention intention. The study results verified the mediating effect of professional quality of life affecting the retention intention. Conclusion: In order to improve professional quality of life and retention intention, strategies to prevent workplace bullying and promote social support and resilience are needed.

• Journal of Internet of Things and Convergence
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• v.8 no.3
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• pp.29-40
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• 2022

The aim of this study was to analyze research trends of social service quality from 2007 to 2020 based on text mining and topic modeling. Our focus was to provide foundational materials for social service improvement by discovering the latent meaning of relevant research papers. We collected 97 scholarly articles on social service, social welfare service, and quality from RISS, and implemented two segments of text mining analysis. Our results showed that the first section included 38 papers and the second 59, indicating 6.9 articles annually. Word frequency results demonstrated that the common keywords of both sections were 'service', 'quality', 'social service', 'satisfaction', 'users', 'quality control', 'reuse', 'policy', 'voucher', etc. TF-IDF suggested that 'social service', 'satisfaction', 'users', 'customer satisfaction', 'revisiting', 'voucher', 'quality', 'assisted living facility', 'quality control', 'community service investment business', etc., were represented in both categories. Lastly, topic modeling analysis revealed that the first segment displayed 'types of care services', 'service costs', 'reuse', 'users based', and 'job creation', whereas the second presented 'service quality', 'public value', 'management system of human resources', 'service provision system', and 'service satisfaction'. Future directions of social service quality were discussed based on the results.