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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Institute of Industrial Engineers
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Korean Institute of Industrial Engineers
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Volume & Issues
Volume 31, Issue 4 - Dec 2005
Volume 31, Issue 3 - Sep 2005
Volume 31, Issue 2 - Jun 2005
Volume 31, Issue 1 - Mar 2005
Selecting the target year
Design of a Continuous Screening Procedure in the Bivariate Normal Model
Hong, Sung Hoon ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 99~105
A quality inspection procedure interchangeably using the performance and surrogate variables is proposed. At the start of the inspection, the continuous performance variable is measured for all items. As soon as iconsecutive items are found to be conforming, the continuous surrogate variable is measured instead of the performance variable. If an item is rejected, the inspection based on the performance variable is resumed. It is assumed that the performance variable and the surrogate variable are jointly normally distributed with known means and standard deviations. The average outgoing quality (AOQ) expression is derived, and the methods of finding the inspection procedure with a specified average outgoing quality limit (AOQL) are presented.
Adaptive Inventory Control Models in a Supply Chain with Nonstationary Customer Demand
Baek, Jun-Geol ; Kim, Chang Ouk ; Jun, Jin ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 106~119
Uncertainties inherent in customer demand patterns make it difficult for supply chains to achieve just-in-time inventory replenishment, resulting in loosing sales opportunity or keeping excessive chain wide inventories. In this paper, we propose two intelligent adaptive inventory control models for a supply chain consisting of one supplier and multiple retailers, with the assumption of information sharing. The inventory control parameters of the supplier and retailers are order placement time to an outside source and reorder points in terms of inventory position, respectively. Unlike most extant inventory control approaches, modeling the uncertainty of customer demand as a stationary statistical distribution is not necessary in these models. Instead, using a reinforcement learning technique, the control parameters are designed to adaptively change as customer demand patterns change. A simulation based experiment was performed to compare the performance of the inventory control models.
A Framework of the Integrated Production/Distribution Model with Non-Integer Lags
Kim, Jong Soo ; Shin, Ki Young ; Moon, Chi Ung ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 120~126
Until now, the traditional production models and logistics have developed a broader strategic approach called supply chain. However, there are some obstacles to apply industry practice because of unrealistic assumptions. The most serious of them is that they assume the lead times are integer multiples of the planning time grid. This assumption makes it difficult to express the processing and transportation lags correctly. Thus, in this paper, we propose a new methodology for the integrated production/distribution model having non-integer time lags using the concept of dynamic production function. In case that the time lags are integer or non-integer, the dynamic production function reflects well the situation under given environments. Experiments show that the proposed model can express the real system more accurately than the prior model can.
A Synthetic Human Sensibility Assessment System based on Psycho-physiological Evaluation
Chung, Soon-Cheol ; Tack, Gye-Rae ; Yi, Jeong-Han ; Min, Byung-Chan ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 127~134
Human sensibility is assessed by measuring and analyzing various physiological signals in an objective way, or by analyzing adjectives chosen by the subjects in a subjective way. The present study aims at developing an integrated human sensibility assessment system that measures changes in a person's objective and subjective sensibility in real-time and analyzes them in an integrative way. The present system is composed of a real-time subjective sensibility assessment system, an automatic subjective sensibility assessment system and a real-time physiological signal measurement and analysis system for sensibility assessment, which are separated from one another. It can be utilized individually, or can be combined as a synthetic sensibility assessment system for comprehensive sensibility assessment.
Optimal Investment of Capacity and Production Planning of Flexible Manufacturing Technology Considering Economies of Scope
Lee, Deok-Joo ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 135~142
This study addresses the problem of flexible technology acquisition in a multi-product market when demands are uncertain. We confine the concept of flexibility to the ability of manufacturing system to produce a number of different types of products, called a product-mix flexibility type. And an analytical model in which the economies of scope are incorporated explicitly as a feature of flexible technology is presented to find the optimal investment decision to acquire flexible technology and optimal production planning. The characteristics of optimal investment strategy related to capacity and production planning are discussed.
IT Investment Evaluation Using the Indices Generated from the Balanced Scorecard Strategy Map : A Method and Case
Choi, Doug W. ; Lee, Dong-wook ; Lee, Dong-Cheol ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 143~151
Information technology(IT) investment evaluation requires measurements from many perspectives. Except for the case of financial performance, these measurements mostly belong to the qualitative or intangible domain. The problem with IT investment evaluation lies in the fact that it is very difficult to define the qualitative properties against which to measure the performances. This paper addresses the issue of developing the set of performance indices, and defining the structural relationships between them, such that the IT investment evaluation can be done in a systematic, objective and comprehensive manner. We introduce the balanced scorecard strategy map as the backbone reference frame for the generation of performance indices and for the description of the relationships between them. Sample indices for evaluating projects from strategic perspectives are provided with a case example. A step by step follow through of the index generation process has been presented along with the case.
A Reference Model Based Framework for Supply Chain Collaboration
Choi, Younghwan ; Chae, Heekwon ; Kim, Kwangsoo ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 152~163
The focus of enterprise collaboration of supply chain management, has changed from integrating and exchanging business information to integrating and managing business processes between business partners. However, the collaboration is difficult due to the inherent complexity such as diverse business processes and dynamic business environments. To settle these problems, a reference model based enterprise architecture framework for the collaboration of supply chains is proposed in this paper. The supply chain collaboration framework is composed of three reference models capturing the different views of supply chain collaboration: supply process reference model, service component reference model, and technology and standard reference model. As the framework adapts the OMG's metadata architecture, the processes in the supply chain can be extended and integrated with other value chains, such as design chains, when it is necessary. Using the proposed framework, business managers can rapidly integrate and manage their business processes with their suppliers and customers.
Multiresponse Optimization through a Loss Function Considering Process Parameter Fluctuation
Kwon, Jun-Bum ; Lee, Jong-Seok ; Lee, Sang-Ho ; Jun, Chi-Hyuck ; Kim, Kwang-Jae ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 164~172
A loss function approach to a multiresponse problem is considered, when process parameters are regarded as random variables. The variation of each response may be amplified through so called propagation of error (POE), which is defined as the standard deviation of the transmitted variability in the response as a function of process parameters. The forms of POE for each response and for a pair of responses are proposed and they are reflected in our loss function approach to determine the optimal condition. The proposed method is illustrated using a polymer case. The result is compared with the case where parameter fluctuation is not considered.
An EMQ Model with Rework
Kim, Chang Hyun ;
Journal of Korean Institute of Industrial Engineers, volume 31, issue 2, 2005, Pages 173~179
This paper presents an extended EMQ model which determines an optimal production quantity for a single stage production system when defective items are stochastically produced in the production process and they are re-processed in the rework process to convert them into non-defectives. Through the mathematical modeling, an optimal solution minimizing the average cost per unit time and minimum average cost as well as some properties are derived. It can be shown that each of the existing models is a special case of the proposed model under some conditions. Numerical experiment is carried out to examine the behavior of the proposed model and support properties derived.