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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Management Science and Financial Engineering
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The Korean Operations and Management Science Society
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Volume & Issues
Volume 12, Issue 2 - Nov 2006
Volume 12, Issue 1 - May 2006
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The Cost Impact of Information Delay in a Supply Chain
Kim Heung-Kyu ;
Management Science and Financial Engineering, volume 12, issue 1, 2006, Pages 1~34
In this paper, the impact of information sharing, possibly with some delay, on costs in a simple supply chain in which there are two participants, a single retailer and a single manufacturer, is considered. When participants in the supply chain do not use fully integrated EDI, some delay associated with information sharing is inevitable. A mathematical model that allows us to quantify the cost incurred by the manufacturer in the supply chain under information sharing, possibly with some delay, vs. no information sharing is presented. From this model, some managerial implications are gleaned.
The Cultural Effects on Information Characteristics of Accounting Information Systems
Choe Jong-Min ;
Management Science and Financial Engineering, volume 12, issue 1, 2006, Pages 35~64
This study empirically investigated cultural differences in the amount of information provided by management accounting information systems as well as the differences in organizational performance according to variations in the amount of information. Through cluster analysis, we classified sample firms into five organizational cultural types: Semi-innovative, innovative, bureaucratic, semi-bureaucratic and supportive. The results showed that in the semi-innovative firms, a greater amount of the traditional and advanced types of information is produced, while in bureaucratic firms, traditional information is much more provided than in the innovative, semi-bureaucratic and supportive firms. These results confirmed cultural differences in the amount of information produced. According to the results of this study, it was found that in organizational performance, the rankings of semi-innovative firms, which have the highest scores in the amount of information, are also the highest, and the performance scores in innovative firms are generally next to those of semi-innovative firms. Hence, it is concluded that there are cultural differences in the amount of information provided, and these differences affect organizational performance.
Assessment of Effects of Predictors on the Corporate Bankruptcy Using Hierarchical Bayesian Dynamic Model
Sung Min-Je ; Cho Sung-Bin ;
Management Science and Financial Engineering, volume 12, issue 1, 2006, Pages 65~77
This study proposes a Bayesian dynamic model in a hierarchical way to assess the time-varying effect of risk factors on the likelihood of corporate bankruptcy. For the longitudinal data, we aim to describe dynamically evolving effects of covariates more articulately compared to the Generalized Estimating Equation approach. In the analysis, it is shown that the proposed model outperforms in terms of sensitivity and specificity. Besides, the usefulness of this study can be found from the flexibility in describing the dependence structure among time specific parameters and suitability for assessing the time effect of risk factors.
A Converging Exact Algorithm for Determining an Optimal 3-Class-Based Dedicated Linear Storage System
Yang Moon-Hee ;
Management Science and Financial Engineering, volume 12, issue 1, 2006, Pages 79~94
In this paper, we readdress a layout design problem, PTL, for determining an optimal 3-class-based dedicated linear storage layout in a class of unit load storage systems. Based on some fundamental properties derived, we provide a converging exact algorithm with O(n[logn]), which is more efficient than that of Yang and Kim  and can be applied to PTL[K] with
in order to reduce computational execution time. In addition, we prove that the necessary condition suggested by them is also a sufficient condition to PTL.
A Two-Stage Heuristic for Disassembly Scheduling with Capacity Constraints
Jeon Hyong-Bae ; Kim Jun-Gyu ; Kim Hwa-Joong ; Lee Dong-Ho ;
Management Science and Financial Engineering, volume 12, issue 1, 2006, Pages 95~112
Disassembly scheduling is the problem of determining the quantity and timing of disassembling used or end-of-life products while satisfying the demand of their parts and/or components over a planning horizon. The case of assembly product structure is considered while the resource capacity constraints are explicitly considered. A cost-based objective is considered that minimizes the sum of disassembly operation and inventory holding costs. The problem is formulated as an integer programming model, and a two-stage heuristic with construction and improvement algorithms is suggested in this paper. To test the performance of the heuristic, computational experiments are done on randomly generated problems, and the results show that the heuristic gives near optimal solutions within a very short amount of computation time.
Quasiconcave Bilevel Programming Problem
Arora S.R. ; Gaur Anuradha ;
Management Science and Financial Engineering, volume 12, issue 1, 2006, Pages 113~125
Bilevel programming problem is a two-stage optimization problem where the constraint region of the first level problem is implicitly determined by another optimization problem. In this paper we consider the bilevel quadratic/linear fractional programming problem in which the objective function of the first level is quasiconcave, the objective function of the second level is linear fractional and the feasible region is a convex polyhedron. Considering the relationship between feasible solutions to the problem and bases of the coefficient submatrix associated to variables of the second level, an enumerative algorithm is proposed which finds a global optimum to the problem.
Frequency Reassignment Problem in Code Division Multiple Access Networks
Han Jung-Hee ;
Management Science and Financial Engineering, volume 12, issue 1, 2006, Pages 127~142
In this paper, we present a frequency reassignment problem (FRP) that arises when we add new base stations to resolve hot-spots or to expand the coverage of a code division multiple access (CDMA) network. For this problem, we develop an integer programming (IP) model along with some valid inequalities and preprocessing rules. Also, we develop an effective heuristic procedure that solves two sub-problems induced from the original problem in repetition. Computational results show that the proposed heuristic procedure finds a feasible solution of good quality within reasonable computation time. Also, the lower bound by-produced from the heuristic procedure is quite strong.