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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 20, Issue 4 - Dec 1994
Volume 20, Issue 3 - Sep 1994
Volume 20, Issue 2 - Jun 1994
Volume 20, Issue 1 - Mar 1994
Selecting the target year
Determination of the Optimal Target Values for a Canning Process with Linear Shift in the Mean
Lee, Min-Goo ; Bai, Do-Sun ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 3~13
The problem of selecting the optimal target values in a canning process is considered for situations where there is a linear shift in the mean of the content of a can which is assumed to be normally distributed with known variance. The target values are initial process mean, length of resetting cycle and controllable upper limit. Profit models are constructed which involve give-away, rework, and resetting costs. Methods of finding the optimal target values are presented and a nemerical example is given.
Development and Comparisons of Bayesian Acceptance Sampling Plans for the Exponential Lifetime Distribution
Jeong, Hyun-Seok ; Jin, Hwi-Chul ; Yum, Bong-Jin ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 15~25
The Bayesian approach to reliability acceptance sampling has several advantages over the non-Bayesian approach. For instance, the former usually requires less amount of testing time and smaller sample sizes than the latter. In this article, a Bayesian acceptance sampling plan(ASP) based on a failure-free period life test is developed under the assumption of exponential lifetime distribution, and is compared with the corresponding Bayesian hybrid ASP in terms of the expected completion time. It is found that the proposed ASP tends to have a smaller expected completion time than the Bayesian hybrid ASP as the prior assessment of the reliability of a lot becomes optimistic, and vice versa. Tables of failure-free period Bayesian ASP's are also included.
Development of Analysis Method of Ordered Categorical Data for Optimal Parameter Design
Jeon, Tae-Jun ; Park, Ho-Il ; Hong, Nam-Pyo ; Choe, Seong-Jo ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 27~38
Accumulation analysis is difficult to analyze the ordered categorical data except smaller-the-better type problem. The purpose of this paper is to develop the statistic and method that can be easily applied to general type of problem, including nominal-the-best type problem. The experimental data of contact window process is analyzed and new procedure is compared with accumulation analysis.
An Analysis Method of Accelerated Life Test Data with a Change of Failure Mechanism
Won, Y.C. ; Kong, M.B. ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 39~51
Almost all accelerated life tests assume that no basic failure mechanism changes within the test stresses. But accelerated life test, considering failure mechanism changes, is needed since failure mechanism changes when accelerating beyond the used stress. This paper studies the analysis when the failure mechanism changes within the test stresses. The piecewise linear regression, which the join point of two lines is estimated, is applied In particular, two accelerated life tests, with and without a change in failure mechanism are examined.
FMS에서의 Deadlock 탐지와 방지에 관한 연구
Lim, Dong-Sun ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 53~69
Deadlock in flexible manufacturing systems (FMS) which refers to the stop state of job flow in the system can be commonly occurred in operating FMS. This state mainly due to bad movements of jobs and commonly job routings should be avoided to maximize the utilization of high-capital resources in this study, the deadlock generated from the conflict between flow objects competing to occupy space resources in FMS is investigated. Capacity Designated Directed Graph (CDG) is constructed to represent the space resources and flow object routings. From the characteristics of CDG, an algorithm for the detection of the deadlock possibility is proposed. Finally two deadlock avoidance rule are proposed and implemented in the control on Automated Guided Vehicle system in an FMS.
The Development of the Knowldege-Based Electric Fault Diagnosis and Maintenance System for Overhead Cranes
Choi, Seung-Young ; Kim, Sunn-Ho ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 71~85
Overhead cranes which carry heavy items in construction or production areas consist of structure and electric modules. More than 80% of breakdowns bring out of the electric module. As operators do not know all about cranes, it sometimes takes much time to repair the cranes. In order to resolve this problem, the expert system which can diagnose causes of faults and give instructions for repair to operators, has been developed. The scope of the paper is limited to the electric module. First of all, analyzing symptoms and causes, we have developed a rule base with the expert system shell, EXSYS. Furthermore, for the facility maintenance including repair instructions against the causes, the instruction data base was developed with FOXPRO. On the other hand, for the help of user's understanding the fault causes, the graphic animation module which shows malfunctioning component ports or motions in 3D was developed with the graphic software, TOPAS VGA.
Chord-Length Spline Surface Using Hermite Interpolant
Jun, C.S. ; Ju, S.Y. ; Jeon, M.G. ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 87~98
This paper describes a method of constructing VC2 Chord-length spline surface from semi-evenly spaced 3D point array. The suface uses Hermite interpolant as Ferguson surface, and it is an extention of chord-length spline curve to surface The proposed surface may be widely used in interpolating smoothly 3D point data obtaind by measurement or engineering design.
Sliced Profile-based Automatic Extraction of Machined Features from CSG Models
Lee, Young-Rai ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 99~112
This paper describe the development of a systematic method of slicing solid parts based on a data structure called Sliced Profile Data Structure(SPDS). SPDS is an augmented polygon data structure that allows multiple layers of sliced profiles to be connected together. The method consists of five steps: (1) Selection of slicing directions, (2) Determination of slicing levels, (3) Creation of sliced profiles, (4) Connection of sliced profiles, and (5) Refinement. The presented method is aimed at enhancing the applicability of CSG for manufacturing by overcoming the problem of non-uniqueness and global nature. The SPDS-based method of feature extraction is suitable for recognizing broad scope of features with detailed information. The method is also suitable for identifying the global relationships among features and is capable of incorporating the context dependency of feature extraction.
Duopoly Model of a Congested Market
Oh, Hyung-Sik ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 113~120
A duopoly model is developed in order to examine the effect of imperfect competition on the price-setting behavior of competing providers in a congested market. Multiple Nash price equilibria are found and the implications of such multiple price equilibria are discussed.
Sufficient Condition for Existence of Solution Horizon in Undiscounted Nonhomogeneous Infinite Horizon Optimization Problems
Park, Yun-Sun ; Cho, Myeon-Sik ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 121~131
Since many infinite horizon problems have infinite sequence of data to be considered, in general, it is impossible to express the optimal strategies finitely or to calculate them in finite time. This paper considers undiscounted nonhomogeneous deterministic infinite horizon problems. For those problems, we take a basic step to solve this class of infinite horizon problems optimally by giving a sufficient condition for a finite solution.
A PROPAGATION ALGORITHM FOR INTERVAL-BASED CONDITIONAL CONSTRAINTS
Kim, Kyeong-Taek ;
Journal of Korean Institute of Industrial Engineers, volume 20, issue 1, 1994, Pages 133~146
Conditional constraints are frequently used to represent relations. To use these conditional constraints, it is necessary to develop an appropriate logic in which these conditional constraints can be represented and manipulated. Nevertheless, there has been little research that addresses interval-based conditional constraints. The proposed approach addresses the use of conditional constraints involving intervals in constraint networks. Two algorithms are presented: (1) a propagation algorithm for an interval-based conditional constraint, which is similar to one for an exact-value conditional constraint; (2) a propagation algorithm for interval-based conditional constraints which satisfy some conditions. The former can be applied to any conditional constraint. However, with the former algorithm, conditional constraints are usually categorized into the cases that they cannot be propagated. After investigating several methods in which most conditional constraints can be propagated, we propose the latter algorithm under certain condition that usually results in smaller resulting design space comparing to the former.