• Agribusiness and Information Management
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• v.1 no.2
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• pp.3-21
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• 2009

얼마나 빠른 환경의 변화에 잘 적응하느냐에 따라서 개인과 조직의 성패는 좌우된다. 이러한 환경의 변화에 잘 적응하기 위해서는 정보의 활용이 필수적이다. 본 연구에서는 농장경영체의 정보 활용도 향상을 위한 구체적인 방안을 제시하는데 있다. 이를 위해 설문과 인터뷰조사, 선행사례 조사 등을 실시하고 농장경영에 필요한 의사결정 단계별 정보를 도출하고 이를 제공하기 위한 데이터베이스와 모델 베이스를 제안하였다. 또한 구축된 정보를 잘 활용하는 정보 접근 방법을 병목정보 해결의 시각에서 정형검색과 비정형검색방법을 제시하였다. 이러한 가치사슬적 접근 방법은, 아직 농업분야에서는 보편적인 내용은 아니지만 여타 첨단정보산업과 서비스업에서는 경영체별로 구체화하여 비교적 유용하게 활용하고 있는 방법이다. 본 연구를 바탕으로 품목별로 의사결정 단계별 데이터베이스와 모델베이스가 구축되어 농장경영체가 잘 활용함으로서 불확실성 요인과 변동요인에 잘 대응하여 농업 생산성 향상에 기여할 수 있도록 국가 차원에서 구체적인 시스템적 접근이 필요하다고 본다.

• Journal of Korean Society for Quality Management
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• v.9 no.1
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• pp.22-39
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• 1981

Spandex is a elastomeric fiber in which the-fiber-forming substance is a long chain polymer consisting of at least 85% segmented polyurethane. In the polyurethanes there are the additional oxygen atoms in the main chains of the molecule. The effect of these oxygen atoms is to make the molecule somewhat more flexible. From a physical point of view, elasicity and recovery from stretch are the most important properties of polyurethane, so its use has now expanded into many kitting industry. In this paper, I wish to Test the effect of dyeing condition on the quality of polyurethane.

• Journal of the military operations research society of Korea
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• v.29 no.1
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• pp.43-56
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• 2003

This paper is intended to investigate the Build-up Method of SCM(Supply Chain Management) Connection applying EC Standard. SCM helps companies plan and supply to meet customer demand. SCM is the only solution available today that enables an organization to strategize, plan and execute a company's buy, make, move, store, fulfill and service business processes across multiple enterprises for total profitability. The research of modern scientists has thrown new light on the subject. However, the study of SCM for EC Standard has been strangely neglected by critics. Consequently, existing SCM systems, which require to introduce the functions of EC, need to be changed. Summarizations of the main points that have been analyzed in this paper are as follows:. the sharing information for connection and the Rosetta-net standard of the existing SCM system(Order management module(PIP 3A4) of the Rosetta-net specifications for connection by the Rosetta-net). Finally, it shows the process of the gateway for connecting among the existing SCM systems.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2002.05a
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• pp.742-749
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• 2002

This paper deals with a continuous-review two-echelon inventory model with one-for-one replenishment and Poisson demand where transshipments among retailers are allowed. Two classes of inventory systems are considered by the number of distribution centers(DCs) which provide each retailor with inventory items. 1:N class inventory system and M:N class inventory system respectively. Two-phase model is constructed to find out the optimal inventory positions which minimize supply chain costs. Approximations for customer service levels of the system are evaluated in the first phase, and the optimal inventory positions are found subject to the constraints for service level in the second phase. Simulation tests are performed to assure the effectiveness of the proposed model. The effect of transshipment is evaluated.

• Korean Management Science Review
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• v.24 no.1
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• pp.63-76
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• 2007

To realize the mass customization entails the optimized supply chain design for efficiently producing and delivering the various products. In this study, we considered the problem obtaining the optimized production policy under the situation wherein the multiple products are apportioned into multiple parallel production facilities. More specifically, the production set-up costs incurs according to whether the production facilities are utilized or not. The facility-dependent set-up costs increase the problem complexity in solving the production apportioning problem for multiple products. This problem can be formulated as concave minimization problem, which is known as NP-hard problem. In this paper, a heuristic algorithm is proposed to solve two conjoint problems : one is to select the cost-effective facilities from alternative multiple production facilities and the other is to apportion the production lot to those selected facilities.

• Journal of the Korea Safety Management & Science
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• v.10 no.1
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• pp.167-174
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• 2008

본 연구는 공급자, 중간분배자 그리고 고객으로 구성된 2 단계 공급사슬에서 시간에 따라 일정률로 퇴화하는 퇴화성 제품을 취급하는 중간분배자의 경제적 재고모형을 분석하였다. 문제 분석을 위하여 공급자는 고객으로부터의 수요를 증대시키기 위한 수단으로 일정한 묶음 단위별로 일정한 양의 덤을 제공한다는 가정 하에 재고모형을 설계하였고, 모형 분석을 통하여 이익을 최대화하는 경제적 주문량 결정 방법을 제시하였다. 또한 예제를 통하여 제시된 해법을 적용하고, 그 타당성을 보였다.

• Journal of the Korea Safety Management & Science
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• v.10 no.1
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• pp.129-137
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• 2008

The studies on the logistics has been mainly centered on the logistics information system and logistics performance on the supply chain for the enterprise's profit making. For sustainable development, it's being required the construction of recycling-oriented system, and it's also necessary to construct the efficient system not only in forward but in reverse channel. In addition, it's required to construct information system for supporting reverse logistics smoothly. In this study of manufacturing enterprises, recognition on the environmental problems is set as the adaptation degree to the national environmental regulations and enterprise's concern to the environmental logistics, and it presents the direction through analyzing the effects of such environmental logistics recognition on reverse logistics information system and performance. In order to achieve these aims, it was performed through combining philological and positive studies.

• Journal of Korea Society of Digital Industry and Information Management
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• v.13 no.2
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• pp.1-11
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• 2017

In this paper, we design and implement PADIL(Prediction And Detection of Information Leakage) system that predicts and detect information leakage behavior of insider by analyzing network traffic and applying a variety of machine learning methods. we defined the five-level information leakage model(Reconnaissance, Scanning, Access and Escalation, Exfiltration, Obfuscation) by referring to the cyber kill-chain model. In order to perform the machine learning for detecting information leakage, PADIL system extracts various features by analyzing the network traffic and extracts the behavioral features by comparing it with the personal profile information and extracts information leakage level features. We tested various machine learning methods and as a result, the DecisionTree algorithm showed excellent performance in information leakage detection and we showed that performance can be further improved by fine feature selection.

• Industrial Engineering and Management Systems
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• v.2 no.1
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• pp.28-34
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• 2003

The fundamental design issues that arise in the pickup and delivery system planning are optimizing the system with minimum cost and maximum throughput and service level. This study is concerned with the development of pickup and delivery system with customer responsive service level, DCM(Demand Chain Management). The distribution process and service map are consisted of manufacturing, warehousing, and pickup and delivery. First we formulated the vehicle pickup and delivery problem using GIS-VRP method so as to satisfy the customer service requests. Second, we developed a GUI-type computer program using AVL, automated vehicle location system. The computational results show that the proposed method is very effective on a set of test problems.

• Journal of Korean Society for Quality Management
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• v.35 no.1
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• pp.24-34
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• 2007

This paper investigates the average run length (ARL) of a selectively moving average (S-MA) control chart. The S-U chart is designed to detect shifts in the process mean. The basic idea of the S-MA chart is to accumulate previous samples selectively in order to increase the sensitivity. The ARL of the S-MA chart was shown to be monotone decreasing with respect to the decision length in a previous research [3]. This paper derives the steady-state ARL in a closed-form and shows that the monotone property is resulted from head-start assumption. The steady-state ARL is shown to be a sum of head-start ARL and an additional term. The statistical design procedure for the S-MA chart is revised according to this result. Sensitivity study shorts that the steady-state ARL performance is still better than the CUSUM chart or the Exponentially Weighted Moving Average (EWMA) chart.