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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Management Science Review
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Journal DOI :
The Korean Operations and Management Science Society
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Volume & Issues
Volume 24, Issue 2 - Nov 2007
Volume 24, Issue 1 - May 2007
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The Key Success Factors of Design-oriented New Product Development Strategy : A Case Study of Chocolate-Phone
Ryu, Sung-Il ; Kim, Jin-Woo ; Jang, Seong-Keun ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 1~24
The function of product design has been an important part for success on new product development. We deeply studied 'Chocolate-Phone' case which is considered as a representative of adopting design-oriented new product development strategy. According to this study, we found three contextual factors and nine key success factors for design-oriented new product development. The contextual factors consist of the strong needs for innovative product development, customer's needs for the emotional value, competitive situation for the new product launching. The key success factors consist of design, development, marketing, overall sides. The key success factors of design side are to select talented designers and take an insight for market and communication skill. The key success factors of development side are to possess high technological abilities, to do divergence with removing or giving up some function, management's strong support. The key success factors of marketing side are to bring core marketers from outside, capacity to gather ideas from outside. The key success factors of overall side are to share design-oriented principle with other functions and to change member's mind from engineer-oriented to market-oriented.
Determining the Optimal Buffer Sizes in Poisson Driven 3-node Tandem Queues using (Max, +)-algebra
Seo, Dong-Won ; Hwang, Seung-June ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 25~34
In this study, we consider stationary waiting times in finite-buffer 3-node single-server queues in series with a Poisson arrival process and with either constant or non-overlapping service times. We assume that each node has a finite buffer except for the first node. The explicit expressions of waiting times in all areas of the stochastic system were driven as functions of finite buffer capacities. These explicit forms show that a system sojourn time does not depend on the finite buffer sizes, and also allow one to compute and compare characteristics of stationary waiting times at all areas under two blocking rules communication and manufacturing blocking. The goal of this study is to apply these results to an optimization problem which determines the smallest buffer capacities satisfying predetermined probabilistic constraints on stationary waiting times at all nodes. Numerical examples are also provided.
An Integer Programming Model and Heuristic Algorithm to Minimize Setups in Product Mix
Lee, Young-Ho ; Kim, Seong-In ; Shim, Bo-Kyung ; Han, Jung-Hee ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 35~43
Minimizing the total number of setup changes of a machine increases the throughput and improves the stability of a production process, and as a result enhances the product qualify. In this context, we consider a new product-mix problem that minimizes the total number of setup changes while producing the required quantities of a product over a given planning horizon. For this problem, we develop a mixed integer programming model. Also, we develop an efficient heuristic algorithm to find a feasible solution of good quality within reasonable time bounds. Computational results show that the developed heuristic algorithm finds a feasible solution as good as the optimal solution in most test problems.
The Effect of Long-term Orientation and Asset Specificity on Supply Chain Management Practices and Performance
Park, Jeong-Soo ; Kim, Soo-Wook ; Chang, Deok-Shin ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 45~62
We aim to explain the role of corporate's 'long-term orientation' and 'asset specificity' in the process of SCM(Supply Chain Management) practices' effect on SCM performances, with empirical study about 167 manufacturing companies ail over the country. With confirmatory factor analysis and structural equation model using AMOS program, we conclude long-term orientation and asset specificity act as 'infra-structural role', rather than 'Intermediate role', in the process of SCM practice's effect on SCM performances.
Apportioning the Production Quantities into Parallel Production Facilities for Multiple Products
Kim, Tae-Bok ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 63~76
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.
Evaluation of Quality Levels with Multiple Probability Distributions Under the Taguchi's Feedback Control System
Song, Do-Hyun ; Lee, Sang-Heon ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 77~90
Taguchi assumed that a product characteristic has the uniform distribution in its preventive maintenance limit when deriving the expected loss generated by the quality deviation. But it is reasonable to assume that a product characteristic has the normal distribution than the uniform distribution. On this paper, we first find the optimum inspection interval and the optimum preventive maintenance limit under the truncated triangular distribution. Secondly we use the beta-general distribution and compare with the truncated triangular distribution. By using the numerical examples, we find the optimum inspection interval and the optimum preventive maintenance limit under their distributions. As a result, we find that the beta-general distribution gives the best solution and easy calculation.
Two-Phase Approach for Machine-Part Grouping Using Non-binary Production Data-Based Part-Machine Incidence Matrix
Won, You-Dong ; Won, You-Kyung ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 91~111
In this paper an effective two-phase approach adopting modified p-median mathematical model is proposed for grouping machines and parts in cellular manufacturing(CM). Unlike the conventional methods allowing machines and parts to be improperly assigned to cells and families, the proposed approach seeks to find the proper block diagonal solution where all the machines and parts are properly assigned to their most associated cells and families in term of the actual machine processing and part moves. Phase 1 uses the modified p-median formulation adopting new inter-machine similarity coefficient based on the non-binary production data-based part-machine incidence matrix(PMIM) that reflects both the operation sequences and production volumes for the parts to find machine cells. Phase 2 apollos iterative reassignment procedure to minimize inter-cell part moves and maximize within-cell machine utilization by reassigning improperly assigned machines and parts to their most associated cells and families. Computational experience with the data sets available on literature shows the proposed approach yields good-quality proper block diagonal solution.
A Time-fraction Based Scheduling Method for Downlink Transmissions in Wireless Network
Soni, Samit ; Paik, Chun-Hyun ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 113~126
This paper deals with a mathematical approach for finding the time-fractions for the time-fraction based scheduling method in multimedia wireless networks. By introducing a constraint that regulates the performance fairness amongst users, we present a systematic method for harmonizing both the system and user performance. Numerical results show that the time-fraction based scheduling method reinforced with our scheme is very effective especially in multimedia environments.
A Study on the Adoption Factors and Performance Effects of Mobile Sales Force Automation Systems
Kim, Dong-Hyun ; Lee, Sun-Ro ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 127~145
This study attempts to examine the acceptance factors of mSFA systems based on the innovation diffusion and technology acceptance model, and to measure the performance effects of mSFA systems using BSC metrics. Results show that (1) the characteristics of mobility and interactivity have positive impacts on perceived usefulness, ease of use, and professional fit. But the characteristics of personal identity were not perceived as useful due to users' negative feelings about privacy infringement and surveillance. (2) Job fit has positive impacts on perceived usefulness and professional fit. (3) Perceived usefulness, ease of use, and professional fit positively influence the degree of users' dependence on mSFA systems, which have positive impacts on users' performance measured by the personal BSC metrics including perspectives of finance, customer, internal process, and learning and growth.
Driving Strategy for the Successful Six Sigma Innovation by Industrial Classification
Choi, Bong ; Chung, Nam-Ho ; Lee, Kun-Chang ; Kwon, Soon-Jae ;
Korean Management Science Review, volume 24, issue 1, 2007, Pages 147~160
Six Sigma's concept has long been used as an effective way of restructuring the management process of a firm. In literature regarding Six Sigma, a number of successful cases were reported, where Six Sigma based management activities could enhance firm's strategic performance dramatically for year. However, there exist very few researches investigating the effect of Six Sigma on process innovation and quality improvement. Therefore this study propose a research model testing whether Six Sigma innovation could improve process innovation and quality improvement by industrial classification. We collected 332 valid questionnaires from expert in Six Sigma activities, and applied PLS. Empirical results showed that Six Sigma activities could contribute to process innovation and quality improvement.