• 산업경영시스템학회지
• /
• 제47권3호
• /
• pp.31-38
• /
• 2024

This paper chronicles the evolution of load-sharing parameter estimation methodologies, with a particular focus on the significant contributions made by Kim and Kvam (2004) and Park (2012). Kim and Kvam's pioneering work underscored the inherent challenges in deriving closed-form solutions for load-share parameters, which necessitated the use of sophisticated numerical optimization techniques. Park's research, on the other hand, provided groundbreaking closed-form solutions and extended the theoretical framework to accommodate more general distributions of component lifetimes. This was achieved by incorporating EM-type methods for maximum likelihood estimation, which represented a significant advancement in the field. Unlike previous efforts, this paper zeroes in on the specific characteristics and advantages of closed-form solutions for load-share parameters within reliability systems. Much like the basic Economic Order Quantity (EOQ) model enhances the understanding of real-life inventory systems dynamics, our analysis aims to thoroughly explore the conditions under which these closed-form solutions are valid. We investigate their stability, robustness, and applicability to various types of systems. Through this comprehensive study, we aspire to provide a deep understanding of the practical implications and potential benefits of these solutions. Building on previous advancements, our research further examines the robustness of these solutions in diverse reliability contexts, aiming to shed light on their practical relevance and utility in real-world applications.

• 한국전자거래학회지
• /
• 제5권2호
• /
• pp.27-47
• /
• 2000

Recently firms which have been using traditional VAN-EDI are adapting Web-EDI at very rapid pace. Based on the Internet, Web-EDI is easier to install, is cheaper and more accessible than VAN-EDI. Web-EDI establishes an electronic hierarchy as a type of Inter-Organization Information System. An electronic hierarchy connects two legally separate firms in an electronically mediated relationship. The primary reasons for establishing an electronic hierarchy is to improve the flow of materials and information between firms. This paper suggests two hypotheses that describe the possible impact of Web-EDI on firms in the Web-EDI network, and empirically tests them using data from a case study based on a discount store. The result is as follows. First, the more a firm utilizes information shared through Web-EDI, the higher the inventory turns. Second, a higher level of information sharing does not necessarily increase the inventory turns of Web-EDI adopters who are coerced to implement the electronic networks by the champion. These findings imply that the operational performance of Web-EDI adopters can be improved only when the firms intensively utilize the information shared through Web-EDI for their business processes.

• 패션비즈니스
• /
• 제9권4호
• /
• pp.44-58
• /
• 2005

In a global market environment with information technology, the textile and apparel industry tries to survive by having competitive power embedded in Supply Chain Management to improve the interrelation among different stages of industries such as fiber, textile, apparel manufacturing, and retailing. The purpose of this empirical study was to investigate performance on Supply Chain Management of textile firms such as 4 textile export firms and 10 collaborate firms which were adopted SCM system. For research methodology, we developed questionnaires based upon interview and literature review. The results of this study were as follows: There were neutral responses or somewhat dissatisfactions on SCM application from CEOs, CMOs, site workers, and collaborators, but over half of respondents indicated 21-40% improvement of affairs. Standard documents and information sharing of SCM system were salient effects. SCM system with standard documents improved receipts/payments and inventory management most.

• 한국도서관정보학회지
• /
• 제37권2호
• /
• pp.145-171
• /
• 2006

오픈 액세스 운동의 영향으로 국내외 교육 및 연구 기관들은 기관 리포지토리에 대한 관심이 높아지고 있다. 본 연구에서는 국가지식정보 사업 중 상대적으로 다른 사업에 비해서 콘텐츠 구축 및 시스템 관리 측면에서 활성화되고 있지 않은 경제사회분야 기관들의 정보 공유 실태를 조사하여 공유 현황과 그 개선책을 제시하였다. 분석 대상은 경제사회분야의 가장 핵심적인 IR 서비스 제공자의 역할을 하고 있는 IKIS를 선정하였으며, 조사 내용은 이 시스템의 이해 당사자인 세 개의 커뮤니티 즉, 운영주체, 참여기관 및 이용자의 입장에서의 문제점, 요구 사항들을 예비조사, 사례조사 등 다양한 연구 방법들을 활용하여 조사, 분석하였다. 이러한 분석 결과를 기초로 하여 IKIS의 활성화 방안을 운영주체, IKIS 운영위원회 구성 등을 중심으로 한 운영적인 측면과 메타데이터와 콘텐츠 개선, 시스템 성능 개선 등을 중심으로 한 시스템적인 측면에서 제안하였다. 본 연구 결과는 IKIS의 향후 개선 전략에는 물론 대학, 학교 등의 기관 리포지토리 및 IR 서비스 제공자 구현에도 기관 자료의 효율적인 통합 관리를 위한 하나의 지침으로 활용될 수 있을 것이다.

• 정보관리학회지
• /
• 제34권1호
• /
• pp.31-50
• /
• 2017

본 연구에서는 2001년 개발을 시작으로 학교도서관의 자료 관리를 해결하고, 자료의 공동 활용을 위한 데이터 구축을 지원해 온 DLS의 근본적인 문제점을 조사하고, 이를 해결할 수 있는 개선방안을 모색하고자 한다. 연구방법으로 DLS 전문위원 9명을 대상으로 자료선정, 자료등록, 대출반납, 장서점검, 통계, 이용자검색의 6가지 영역에서 DLS의 사용현황과 문제점을 조사하고 이를 해결할 개선방안을 제안하였다. 자료선정 측면에서는 수서시스템 도입 및 온라인 희망도서 구입신청 기능 추가가 필요하다. 자료등록 측면에서는 데이터 품질 관리 향상과 검색기능 향상을 위한 색인어의 체계적 입력 및 어휘통제가 필요하다. 대출반납 측면에서는 대출속도 향상이, 장서점검 측면에서는 폐기자료의 복원 기능이, 통계 측면에서는 정확한 통계자료 생성이 필요하다. 이용자검색에서는 검색속도 향상 및 이용자 인터페이스 기능 향상이 필요하다. 본 연구는 앞으로 DLS 시스템 개선에 많은 기여를 할 것이며 이에 따라 DLS 이용도 향상될 것이다.

• 패션비즈니스
• /
• 제11권4호
• /
• pp.221-231
• /
• 2007

SCM system is required inter-industrial cooperation as well as inter-organizational cooperation. It means not only standardization of inter-organization but also standardization of inter-industry. SCM makes possible one circulation from fiber to retail industry in the respects of information and product flows. QR is the SCM of textile apparel industry, which satisfy customer need with least cost and maximum profit. Customer-oriented supply chain system focused on information sharing, cost reduction, inventory control, lead time reduction, quick response on customer demand. How we can measure the performance of successful SCM is issued on the approach of Balanced Scorecard which evaluates 4 perspectives such as customer perspective, internal business perspective, financial perspective, and innovation and learning perspective. This can project the blueprint of textile fashion business to right direction with vision.

• Management Science and Financial Engineering
• /
• 제4권2호
• /
• pp.15-42
• /
• 1998

A joint problem of order delivery, setup reduction, and cost-sharing in a two-echelon inventory system in which a vendor supplies multiple products to a group of buyers is studied here. The basic premise is that buyers have independently implemented setup reduction programs to acquire benefits from small order sizes. Doing so, however, causes the buyers' individually optimal order cycles to be differ from that of the vendor. In conjunction with this, two models are considered. In the first model, a multi-buyers single product situation is considered in which the vendor implements a joint supply cycle policy. However, buyers, as the dominant party, insist after implementing the individually optimal setup reduction that the vendor accept their individually optimal order schedules. In the second model. a multi-products, single buyer situation is considered in which the buyer implements a joint order policy. Here, the vendor, as the dominant party, refuses to cooperate fully with the buyer's individually reduced joint order schedule, and designs his own individually optimal setup reduction mix for each product under a given budget constraint. This led to a study of an integrated Setup Reduction/Break-even Pricing Policy for each situation to eliminate mismatches in individually optimal cycle times.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2001년도 춘계학술대회 논문집
• /
• pp.377-380
• /
• 2001

A recent trend in flexible manufacturing systems(FMS) is to compose of the identical versatile-machines and to use dynamic tool allocation strategy, sharing tools between machines with fast tool delivery system. Unlike a conventional FMS where parts are fed to the machines with the required tools, tools are acquired from other machines using a tool delivery system and parts can be finished on the same machine in these FMS. Therefore it is more important problem to plan tool flow using tool delivery system in these FMS rather than part flow in conventional FMS. According to existing study, in FMS 20~30 percent of the total management cost is the cost related with tools and it is possible to reduce the tool inventory by 40 percent using efficient tool allocation. In this study, in FMS under dynamic tool allocation strategy, a new method of part release considering tool flow at the stage of part release is proposed. In order to prove the efficiency of the proposed part release it is compared with other part release through simulation experiments. Performance measures in these experiments are the throughput and the number of tardy parts.

• 디지털융복합연구
• /
• 제17권5호
• /
• pp.145-155
• /
• 2019

의료산업분야에서도 헬스케어 공급망관리는 서비스품질 개선과 운영비용 절감을 위한 핵심도구로 많은 주목을 받고 있다. 특히 대형병원의 경우 서비스품질 제고와 병행하여 지속적으로 증가하기만 하는 헬스케어비용을 줄이기 위해 노력하는 현 상황에서 공급망 부문의 성과제고는 전략적으로 더욱 중요해지고 있다. 본 논문은 공급망관리를 통해 대형병원의 성과제고에 기여할 수 있는 병원운영상의 전략적 이슈에 대해 논의하고자 한다. 기존 연구논문 및 관련 자료분석을 통해 대형병원의 헬스케어 공급망관리의 기본 틀을 제시하고 운영 과정상의 정보 가시성과 공유 그리고 표준화 등이 핵심 요소임을 논리적으로 제시하였다. 또한 실제적인 공급망 운영을 위해 효율적인 계획수립과 운영프로세스, 각종 기자재의 추적가능성 극대화를 위한 RFID 활용, 의약품과 각종 소모품재고 절감을 위한 크로스 도킹시스템의 도입도 제안하였으며, 본 연구에서 논의한 공급망관리 운영기법에 대한 시사점도 제시하였다.

• 한국정보시스템학회지:정보시스템연구
• /
• 제9권1호
• /
• pp.157-188
• /
• 2000

Today a knowledge management systems (KMS) is an enabler for gaining competitive position in the market environments. However, it is just recognized as a conceptual management paradigm not as realistic management philosophy in an organization. A firm just accustomed to deal with tangible assets such as inventory and buildings based on the cumulated experiences. However, the firm often struggle with how to define and apply the knowledge management system into its real business activities such as business strategy and productivity. For example, one of textile company, E-land, in Korea found the way how the firm utilize intelligent assets of its employees to overcome the performance differences among the employees in an organization to increase their ability. Managers in an organization should fully understand and try to figure out the concept of knowledge management systems to implement KMS more efficiently and effectively. Even though lots of previous knowledge management literature proposed several unique knowledge management process models, they have their own terms, process sequences, or different approaches. There are three common knowledge management processes： knowledge creation, knowledge store and search, knowledge sharing process. In this study, a new KM process theoretical framework based on the previous researches is developed. This study will guide to those who will adopt or implement of KMS in the organization in near future.