• Industrial Engineering and Management Systems
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• 제9권3호
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• pp.285-293
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• 2010

To obtain visible and traceable information from the supply chain, HW/SW standards for the EPC global network, which process electronic product code (EPC) data read from Radio frequency identification (RFID) tags, are regarded as the de facto industry standard. Supply chain participants install information service systems and provide logistics information to partners by following the EPCglobal architecture framework. Although quality of service (QoS) is essential for providing dependable and scalable services as pointed out by Auto-ID Lab, only a few models for the performance analysis of QoS-related work have been developed in the context of EPC information service systems. Specifically, doing so allows alternative design choices to be tested in an easy and cost-effective manner and can highlight potential performance problems in designs long before any construction costs are incurred. Thus, in this study we construct a model of an EPC information service system for the purposes of performance analysis and designing a dependable system. We also develop a set of building blocks for analytical performance models. To illustrate how the model works, we determine the characteristics of an EPC information service system and then select a combination of these proven modeling concepts. We construct a performance model that considers the response time and shows how to derive meaningful performance values. Finally, we compare the analytical results to measurements of the EPC information service system.

• 품질경영학회지
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• 제33권4호
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• pp.12-20
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• 2005

Supply chain management is a total systems approach to delivering manufactured products to the end customer. Using information technology to coordinate all elements of the supply chain from parts suppliers to retailers achieves a level of integration that is a competitive advantage not available in traditional logistics systems. On the other hand, service chain management is an analogous systems approach that is especially suitable for delivering mobile services such as parcel delivery, cable installation, and home health care. The key elements that distinguish service supply chain management from supply chain management are bidirectional optimization, management of productive capacity, and management of perishability. The purpose of this study is to maintain the construction of service chain management by proving that service quality in after-sales service can be improved through service chain management. First of all, supply chain management, service quality, and service chain management were introduced in theoretical research. In empirical research, it was selected the domestic enterprise that produce electronic appliances with after-sales service, and some customers using the enterprise's after-sales service in the metropolitan area were selected as a sample by convenience sampling method and examined.

• 대한전기학회논문지:전력기술부문A
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• 제50권2호
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• pp.67-75
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• 2001

This paper presents a fast and effective methodology for service restoration in large-scale distribution systems. The service restoration problem is formulated as a constrained optimization problem and requires the fast computation time and superior solution because the more unfaulted out-of-service area should be restored as soon as possible. The proposed methodology is designed to consider the fast computation time and priority service restoration by dijkstra algorithm and fuzzy theory in large-scale distribution systems. Simulation results demonstrate the validity and effectiveness of the proposed on a 26-bus and 140-bus system.

• 한국정보시스템학회지:정보시스템연구
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• 제18권3호
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• pp.71-88
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• 2009

Recently, RFID(Radio Frequency IDentification) has emerged as the main technology in the logistic services. When the existing recognition technology based on bar codes brings about lots of problem due its own limits. RFID becomes the center of attention to solve them. However, RFID is not without any obstacles : companies have their own operating systems. while RFID is developed regardless of each campany's special features. RFID middleware system based on web service is expected to remove these obstacles. This paper shows how to operate the middleware based on web service and to lay in the DB the tag informations taken from reader system Middle assures that companies adopting RFID system for their logistic service are given athptabwebty to any systems whatsoever, avaweable by way of defining logistic information, tag information and reader information. For this purse, we implement as the basic web service a middleware system that turns all data into XML(eXtensatle Markupmsngunfo) of SOAP(Simple Object Access Protocol), the standard data.

• 산업경영시스템학회지
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• 제30권3호
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• pp.62-70
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• 2007

This study define the concepts of port logistics service by investigating various elements of port logistics service and grouping them in six attributes using a Data Mining technique. The QFD (Quality Function Deployment) technique is applied to measure the quality of port logistics service, and those results are analyzed. The DMQFD (Quality Function Deployment using Data Mining) model proposed in this study is a model for analyzing of port logistics service quality which is produced by combining those two stages. Using the DMQFD model, the requirements of customer could understand more correctly and systematically, and it could be an alternative tool to accomplish a customer satisfaction.

• 한국시뮬레이션학회논문지
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• 제17권2호
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• pp.75-82
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• 2008

기존의 대기행렬시스템 추론에 관한 연구들은 서비스시작시점과 서비스종료시점을 이용하여 수행되었다. 그러나 서비스시작시점은 시스템 내부 관측치로서 실제로 관측하기 어려울 때가 많다. 본 논문에서는 서비스시작시점 대신 외부 관측치인 도착시점을 이용하여 대기행렬시스템을 추론한다. 도착 및 이탈시점에 근거한 대기행렬 모형의 분석은 서비스시작시점의 결정이 관건이다. 본 연구의 선행연구로서 선입선출 및 후입선출 시스템에 대한 서비스시작시점의 결정방법은 이미 개발되었다. 본 논문에서는 임의순서규칙 대기행렬시스템으로 추론 범위를 확장한다. 구하고자 하는 성능척도는 평균대기시간과 평균서비스시간이며 이들의 분산을 구함으로써 통계적 분석기법의 사용이 가능하도록 하였다. 마지막으로 시뮬레이션 결과로부터 얻은 데이터를 이용하여 본 연구의 추론방법을 적용함으로써 그 타당성을 검증하였다.

• 대한산업공학회지
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• 제35권4호
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• pp.226-247
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• 2009

The competitiveness of the service sector is driven by its productivity. Services innovation is essential to enhancing service productivity. This paper first presents a framework for services innovation. The framework consists of three main phases of a service lifecycle (namely, service development, service operation, and service improvement), which are supported by IT infrastructure and service R&D management functions. This paper then identifies major research issues that should be investigated in the near future. The current issues of three representative service industries (namely, healthcare service, telecommunications service, and financial service) are also discussed.

• Journal of Information Processing Systems
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• 제10권3호
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• pp.365-383
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• 2014

Service-oriented computing offers efficient solutions for executing complex applications in an acceptable amount of time. These solutions provide important computing and storage resources, but they are too difficult for individual users to handle. In fact, Service-oriented architectures are usually sophisticated in terms of design, specifications, and deployment. On the other hand, workflow management systems provide frameworks that help users to manage cooperative and interdependent processes in a convivial manner. In this paper, we propose a workflow-based approach to fully take advantage of new service-oriented architectures that take the users' skills and the internal complexity of their applications into account. To get to this point, we defined a novel framework named JASMIN, which is responsible for managing service-oriented workflows on distributed systems. JASMIN has two main components: unified modeling language (UML) to specify workflow models and business process execution language (BPEL) to generate and compose Web services. In order to cover both workflow and service concepts, we describe in this paper a refinement of UML activity diagrams and present a set of rules for mapping UML activity diagrams into BPEL specifications.

• 경영과정보연구
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• 제2권
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• pp.295-310
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• 1998

This exploratory study examines critical quality factors of store that can give access to credit card. The procedures of developing instrument is followed by recommendations on the developing measures of marketing constructs. The results shows that service quality of store available for credit card is divided four dimensions(personal service, payment-approving service, information-providing service, problem responsiveness service). These dimensions and scales are verified through the assessment of reliability and validity. Finally, the importance of personal service is showed to be different across types of industry.

• 품질경영학회지
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• 제29권3호
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• pp.97-108
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• 2001

The information system for measuring and analyzing service quality of telephone network is designed on the service quality scheme recommended by ITU(International Telecommunication Union) in this study. The information system is composed of the equipments which measure service quality and the systems which analyze the measured data. The schedule algorithm for effectively operating measurement equipments which are located over public switched telephone network is proposed. The functions of the Information system are Introduced. The information system improves the service quality effectively.