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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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Journal DOI :
Korean Institute of Industrial Engineers
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Volume & Issues
Volume 8, Issue 2 - Dec 1982
Volume 8, Issue 1 - Jun 1982
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Construction of RDPPL / SAFE based on Quantification of Feasibility Function
Gwon, Cheol-Sin ;
Journal of Korean Institute of Industrial Engineers, volume 8, issue 2, 1982, Pages 3~14
The purpose of this study is to establish the function of a sub-system for System Alternatives Feasibility Estimation (SAFE) in R & D Project Planning Phase (RDPPL). It is the fundamental function of the RDPPL/SAFE that selected an optimal planning system alternative of all, considered at RDPPL/SAS, by logical means in view of feasibility. In this paper, improving the function of RDPPL/SAFE, mathmatical models in order to quantify methods determining and integrating the feasibility funtion in each terminal system with a multi-stage process are examined.
A Matrix Method for the Analysis of Two - Dimensional Markovian Queues
Kim, Sung-Shick ;
Journal of Korean Institute of Industrial Engineers, volume 8, issue 2, 1982, Pages 15~21
This paper offers an alternative to the common probability generating function approach to the solution of steady state equations when a Markovian queue has a multivariate state space. Identifying states and substates and grouping them into vectors appropriately, we formulate a two - dimensional Markovian queue as a Markov chain. Solving the resulting matrix equations the transition point steady state probabilities (SSPs) are obtained. These are then converted into arbitrary time SSPs. The procedure uses only probabilistic arguments and thus avoids a large and cumbersome state space which often poses difficulties in the solution of steady state equations. For the purpose of numerical illustration of the approach we solve a Markovian queue with one server and two classes of customers.
Continuous Sampling Plans Based on AFI Curve
Bae, Do-Seon ; Jang, Jung-Sun ; Eom, Ju-Tae ;
Journal of Korean Institute of Industrial Engineers, volume 8, issue 2, 1982, Pages 23~31
A method of selecting parameters of Dodge-type continuous camping plans is proposed ; a sampling plan is designed so that its AFI curve passes through two designated points. AOQL contour lines are also drawn which can be used as a reference in choosing these points.
Preventive Maintenance Policies for a System with Two Types of Units Subject to Deterioration
Kwon, Y.I. ; Bai, D.S. ;
Journal of Korean Institute of Industrial Engineers, volume 8, issue 2, 1982, Pages 33~36
This paper considers preventive maintenance policies for a system with two types of units which is subject to deterioration. Two generalized models are investigated ; a preventive maintenance policy based on the cumulative operating time and a policy based on the number of minimal repairs performed. Optimal preventive maintenance policies which minimize the expected average cost per unit time including the earning loss due to the deterioration are discussed and some numerical examples are given.