• Proceedings of the KIEE Conference
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• 1987.11a
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• pp.154-156
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• 1987

An important aspects of power system design involves consideration of service reliability requirements of load to be supplied and service reliability provided by any proposed system. This paper shows the investigation of the 1984 KEPCO service reliability to the large electric consumer whose contracted maximum demand is over 500 kw. 68 customers of the total 111 investigated are located in Myungdong area and Yuido in Seoul. Of the customers are included hotel Lotte, Giobo and Seoul national University Hospital. The average service reliability of Myungdong area customers is 316min/yr/customer and about 7 times/yr/customer, and 160 min, 6 times for Yuido. Which the service reliability the interruption and the interruption frequency which caused by the customers receiving facilities were showed. The investigation is telling that the service reliability of the underground distribution area are very superior to the other area reliability. The investigated reliability seem not appropriate to be improved by change of distribution System as well as equipments and facilities improvement in the near future.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.35 no.4
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• pp.194-201
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• 2012

Because the difference between products and services are getting less and less, service and manufacturing companies' efforts are increasingly focused on utilizing services to satisfy customers' needs under today's competitive market environment. The value of services depends on service reliability that is identified by satisfaction derived from the relationship between customer needs and service providers. In this paper, we extend concepts from the fault tree analysis for reliability analysis of tangible systems to services. We use an event-based process model to facilitate service design and represent the relationships between functions and failures in a service. The objective of this research is to propose a method for evaluating service reliability based on service processes using service blueprint and FTA. We can identify the failure mode of service in a service delivery process with a service blueprint. The fuzzy membership function is used to characterize the probability of failure based on linguistic terms. FTA is employed to estimate the reliability of service delivery processes with risk factors that are represented as potential failure causes. To demonstrate implementation of the proposed method, we use a case study involving a typical automotive service operation.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.40 no.2
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• pp.41-50
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• 2017

The purpose of this paper is to improve the service tree analysis introduced recently by Geum et al. [15]. Service tree analysis structures the service based on the customer participation perspective and provides a qualitative analysis method categorizing the service elements on the basis of its impact to top service. This paper attempts to apply the concept of reliability importance to the service tree analysis as a perspective of quantitative analysis, which is considered little in Geum et al. [15]. Reliability importance is a measure of the structural impact of the components that make up the system on the system lifetime in reliability engineering field and often used in fault tree analysis. We transform the reliability importance into service importance in accordance with service tree analysis, so that the influence of service elements on the service can be judged and compared. The service importance is defined as the amount of change of the service according to the change of the service element, therefore, it can be utilized as an index for determining a service element for service improvement. In addition, as an index for paired service elements, the relationship between the two service components can be measured by joint service importance. This paper introduces conceptual changes in the process of applying reliability importance to service analysis, and shows how to use the service importance for identifying the priority of service element for the final service and improving customer satisfaction through an example. By using the service importance and joint service importance in service tree analysis, it is possible to make efficient decision making in the process of determining the service elements for analyzing and improving the service.

• Journal of Korea Society of Industrial Information Systems
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• v.5 no.4
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• pp.39-46
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• 2000

New products often have in-service reliability problem despite an intensive development program. Therefore reliability data must be collected and analyzed, and improvements designed and implemented. A type of reliability incentive contract which has recently attracted a lot of attention is reliability improvement warranty(RIW). It has been employed by military, airlines, telecommunication systems, and public utilities. An RIW contract requires that the supplies carries out all repairs, modify the equipment to improve its reliability, and provides all spates needed, for a fixed period, for once-off fee. This paper presents the reliability growth analysis and management methods for in-service MC68 microprocessor, which is the main component of the base station controller in PCS(Personal Communication Service) telecommunication system. The methods will provide guidelines to monitor reliability program in planning RIW contract.

• Proceedings of the KSR Conference
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• 2003.10a
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• pp.27-43
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• 2003

Reliability Lifecycle from Concept to In-Service Operation and Maintenance. Reliability management must consider - SAFETY - SERVICE REQUIREMENTS. Reliability targets/objectives can be specified at feasibility stage. Reliability analysis to support design process. Reliability assessment to support reliability growth or contractual demonstration. Maintenance optimisation to improve reliability during lifetime of operation. Lessons learnt incorporated into next generation of trains.

• Journal of the Korean Dietetic Association
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• v.15 no.3
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• pp.298-310
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• 2009

The purposes of this study were to examine school foodservice employees' awareness on dietitians' service leadership and to analyze the effects of the service leadership on employee attitudes (leader reliability, value correspondence, and leader satisfaction). Questionnaires were distributed to 208 school foodservice employees from November 2007 to January 2008. The results were as follows. First, in terms of the employees' perception on the dietitians' service leadership, service belief gained the highest score, followed by insight, attitude, and ability: the average score was 3.8 point. Second, the leader reliability and leader satisfaction scores perceived by the employees were over 3.8 point on average but the awareness on the value correspondence was 3.43 point. Third, among the service leadership factors, service belief (p<0.001) and insight (p<0.001) had positive effects on leader reliability. Also, service belief (p<0.01), service ability (p<0.001), and insight (p<0.01) had positive effects on value correspondence. Finally, service belief (p<0.001), service ability (p<0.05), and insight (p<0.001) had positive effects on leader satisfaction. Fourth, a hypothesis test using path analysis revealed that dietitians' service leadership produced positive effects on school foodservice employees' attitudes (leader reliability, value correspondence, and leader satisfaction). In conclusion, the service leadership of dietitians directly contributed to leader satisfaction, value correspondence, and leader reliability in school foodservice employees.

• Journal of the Korean Home Economics Association
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• v.49 no.7
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• pp.1-11
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• 2011

This study identified the use types of a home help service and the level of service quality and reviewed the extent of their effects on consumer satisfaction. As a result of measuring the service quality in terms of support, assurance, reliability, empathy and responsiveness, a high overall reliability was demonstrated in the service. The consumer satisfaction with the home help service was discovered as being high, in general. Meanwhile, with the female research participants, the lower the service fee was perceived to be, the higher the consumer satisfaction. The quality assessment items concerning support and reliability were found to be important variables which were influential on consumer satisfaction. Therefore, it has been shown to be imperative to prepare political alternatives regarding the development of the service standard in order to protect user's rights, offer relevant information, and ensure reliability in the home help service.

• International Journal of Contents
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• v.16 no.4
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• pp.1-15
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• 2020

This study examined the impact of chatbot service quality (process quality, outcome quality, and servicescape quality) on user satisfaction and reliability by identifying the relationships between user satisfaction, reliability, immersion, and the paths of three variables influencing reuse intention. The survey was conducted of Korean users in their teens and 70s who had experience using chatbot services. A total of 218 convenience samples were extracted and the data analyzed. By the IS success and SERVQUAL model, the results of structural equation modeling revealed that the chatbot service quality did not affect user satisfaction and reliability. However, user satisfaction and reliability of the chatbot services were shown to lead to reuse intention, and user satisfaction was shown to affect immersion and immersion in reliability. The results showed that satisfaction, reliability, and immersion in the chatbot services were important factors in the chatbot reuse intention. Through the satisfaction and reliability gained through the service, the users wanted to reuse the chatbot services, especially the chatbot services that gained reliability, which will have a greater impact on reuse intention. We can use these results as marketing information to attract loyal customers by identifying the reuse intention of the chatbot service users.

• Journal of Global Scholars of Marketing Science
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• v.15 no.3
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• pp.31-48
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• 2005

The purpose of the study is to identify the flexibility of marketing effects which applies of practical service guarantee strategy over hotel service and methodological effects of practical service guarantee. And the detailed purposes were: first of all, how service guarantee strategy identified by previous theoretical researches influences on a service reliability and service value practically; second, how service reliability and service value influence on customer loyalty; third, how service guarantee influences on customer loyalty directly. According to the results, 5 hypotheses were selected from 5 research hypothesis proposed in this study. The concrete contents were; First, the study inspected how service guarantee strategy influences on service reliability and service value practically. The result was that service guarantee exerted positive influence on service reliability and service value. Second, the study inspected how service reliability and service value influence on customer loyalty. The result service reliability and service value exerted positive influence on customer loyalty. Third, the study inspected how service guarantee strategy influences on customer loyalty. The result service guarantee exerted positive influence on customer loyalty.

• Journal of Korean Academy of Nursing Administration
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• v.20 no.4
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• pp.362-372
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• 2014

Purpose: The purpose of this research was to develop and test the validity and reliability of the Service Orientation Scale for Health Care Organization. Methods: The Service Orientation Scale for Health Care Organization, $SERV^*OR$, was developed through forward-backward translation methods. Internal consistency and reliability, construct and criterion validity were calculated using SPSS Statistics WIN 17.0. Survey data were collected from 283 clinical nurses in a general hospital in J province. Results: The Service Orientation Scale for Health Care Organization showed reliable internal consistency with Cronbach's ${\alpha}$'s for the total scale ranging from .85~.91. Factor loading of the 30 items on four sub-scales ranged from .67~.83. The sub scales were named service leadership, service system, customer focus, and service control. Item convergent and discriminant validity were also established for the Service Orientation Scale for Health Care Organization. Criterion validity showed a significant correlation with customer orientation. Conclusion: The findings of the study demonstrate that the Service Orientation Scale for Health Care Organization has satisfactory construct and criterion validity, and reliability and can be used to measure service orientation.