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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Operations Research and Management Science Society
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Journal DOI :
The Korean Operations and Management Science Society
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Volume & Issues
Volume 31, Issue 4 - Dec 2006
Volume 31, Issue 3 - Sep 2006
Volume 31, Issue 2 - Jun 2006
Volume 31, Issue 1 - Mar 2006
Selecting the target year
A Study on Estimation of Technology Life Span Using Analysis of Patent Citation
Yoo, Sun-Hi ; Lee, Yong-Ho ; Won, Dong-Kyu ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 1~11
A citation-based method of estimating the life span of a patented technology is proposed In this study. The suggested framework Includes : (1) estimation of citation frequency of an individual patent within a technology group. (2) calculation of a mutual citation frequency between citing patent and cited patents, (3) calculation of the period for cited patents from the year of registration to the year of being cited most recently and (4) description for technology group using descriptive statistics such as mean, median, mode, etc. The framework suggested in this study was applied to the US patent data between 1976 and 2004 for 5 communications areas.
The Impact of Strategic Alignment of Accounting Information Systems on a Firm's Performance
Choe, Jong-Min ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 13~33
Using structural equation modeling, this study empirically examined the causal relationships among the level of advanced manufacturing technology (AMT), facilitation of alignment, the degree of strategic alignment of management eccounting Information systems (MAIS), and the improvement of production performance. The causal relationships between MAIS strategic alignment and information characteristics of MAIS were also investigated. The results showed that the level of AMT has a significant and positive impact on alignment facilitation. A significant causal relationship between alignment facilitation and MAIS strategic alignment was also found. It was shown that under high degrees of MAIS strategic alignment, MAIS must provide broad-scope and integrated types of Information. The causal relation-ships between MAIS strategic alignment and organizational performance were significant and positive. Thus, it is concluded that under high levels of AMT, a high degree of MAIS strategic alignment positively contributes to the improvement of production performance.
A Scheduling Problem for Production-Delivery in a Supply Chain
Yoon, Sang-Hum ; Lee, Ik-Sun ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 35~47
This paper considers an integrated scheduling problem for consecutive production and delivery stages in a two-stage supply chain. The Production is performed on a single facility and then the finished products are delivered to the customer by capacitated multiple vehicles. The objective of this paper is to obtain job sequencing and delivery batching minimizing the total cost of the associated WIP inventory, finished product inventory and delivery. The inventory cost is characterized by the sum of weighted flowtime. The delivery cost is proportional to the required number of delivery batches. Some polynomial-solvable cases are derived. For the general case, two efficient heuristic algorithms are suggested, and then the heuristics are tested through some numerical experiments.
E-Business Strategies : The Antecedents and Consequences
Koo, Chul-Mo ; Kim, Yona-Jin ; Nam, Ki-Chan ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 49~68
E-business strategy has interests in Issues of strategic positioning and its impact on firm performance. These studies address the environmental factors as antecedents to strategic decision makings and its consequences such like firm performance. However most studies has not considered the role of business models In explaining e-business firm performance. We adopt Porter's generic strategies to the e-business context. We Identify business models and e-business environmental factors as antecedents and then examine these factors Influence on firm performance. We find that uncertainty of environment has a negatively related to the strategic choices of e-Business firms; in contrast, market turbulence positively affects the level of adoption of all the strategies. Among the strategies, marketing differentiation only makes an Impact on firm performance.
Effective Artificial Neural Network Approach for Non-Binary Incidence Matrix-Based Part-Machine Grouping
Won, You-Kyung ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 69~87
This paper proposes an effective approach for the part-machine grouping(PMG) based on the non-binary part-machine incidence matrix in which real manufacturing factors such as the operation sequences with multiple visits to the same machine and production volumes of parts are incorporated and each entry represents actual moves due to different operation sequences. The proposed approach adopts Fuzzy ART neural network to quickly create the Initial part families and their machine cells. A new performance measure to evaluate and compare the goodness of non-binary block diagonal solution is suggested. To enhance the poor solution due to category proliferation inherent to most artificial neural networks, a supplementary procedure reassigning parts and machines is added. To show effectiveness of the proposed approach to large-size PMG problems, a psuedo-replicated clustering procedure is designed. Experimental results with intermediate to large-size data sets show effectiveness of the proposed approach.
Antecedents of Knowledge Management Success in Public Enterprises
Lee, Bong-Gyou ; Lee, Jung-Woo ; Lee, Young-Hee ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 89~103
The purpose of this study is to examine influential factors in knowledge-sharing and to analyze how these factors influence the performances of knowledge management (KM) in public enterprises. Influencing factors of KM in this study include evaluation-compensation, knowledge management system, learning culture, and organizational structures. As a result, analysis turned out to be the KM system and organizational structure directly effects knowledge-sharing and KM performances. And knowledge-sharing performed as mediating effect between independent variables such as compensation system and organization structure, and dependent variable like KM performance. Therefore, this study concludes that each factor of evaluation-compensation system and learning culture has directly influenced to knowledge-sharing, yet KM performances have Indirectly influenced.
Two-Sided Market and Entry
Jang, Dae-Chul ; Jung, Young-Jo ; Ahn, Byong-Hun ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 105~123
Previous research on two-sided markets has, for the most part, concentrated on indirect network externalities between buyers alto sellers. This paper considers direct competition effect among sellers and among buyers as well as indirect network externalities. We develop an analytic model of C2C e-marketplaces and examine whether a monopolistic incumbent could successfully deter new entry into its market. We find that the effect of the number of sellers or buyers on the price of goods depends on whether sellers have decided to sell the goods using an auction or fixed pricing rule and on the characteristics of the goods. We argue that when the effect of the number of sellers on the price of goods is significantly larger than that of buyers, there is a high possibility of entry. In particular, we show that entry becomes more difficult to deter as fixed-price format is adopted more frequently or the proportion of collectables is relatively low.
Distribution Planning for a Two-Echelon Distribution System under Fill Rate Constraints
Kwon, Ick-Hyun ; Kim, Sung-Shick ; Kim, Chang-Ouk ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 125~138
This paper considers a periodic review, two-echelon inventory system with one central warehouse and several re-tailers facing normally distributed demand. The goal is to attain target fill rates, while the systemwide total holding costs are minimized. An important aspect of this problem is material rationing in the case of shortages. If a central warehouse has insufficient inventory to deliver all replenishment orders to retailers, all order quantities are should be adjusted according to some rationing rule. A simple but efficient rationing rule is proposed and compared with the Balanced Stock (BS) rationing as introduced by Heijden which is known to be the best rationing policy in the literature. Numerical results show that the proposed rationing rule is more cost effective than BS rationing, especially for the differences in holding costs between retailers are large.
The Maximal Profiting Location Problem with Multi-Product
Lee, Sang-Heon ; Baek, Doo-Hyeon ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 139~155
The facility location problem of this paper is distinguished from the maximal covering location problem and the flxed-charge facility location problem. We propose the maximal profiting location problem (MPLP) that is the facility location problem maximizing profit with multi-product. We apply to the simulated annealing algorithm, the stochastic evolution algorithm and the accelerated simulated annealing algorithm to solve this problem. Through a scale-down and extension experiment, the MPLP was validated and all the three algorithm enable the near optimal solution to produce. As the computational complexity is increased, it is shown that the simulated annealing algorithm' is able to find the best solution than the other two algorithms in a relatively short computational time.
The Effects of the Project Managers' Competency and Leadership Style on the Performance and the Customer Satisfaction of SI Projects
Kim, Eun-Hong ; Kim, Wha-Young ;
Journal of the Korean Operations Research and Management Science Society, volume 31, issue 4, 2006, Pages 157~179
Recently, as business becomes more dependent on information technology for their operations, SI project managers are under increasing pressure to implement SI projects on time and within budget, and to satisfy customer requirements. For the success of SI projects and customer satisfaction, SI project managers should master the critical shills and knowledge requirements and consider the proper leadership style to lead the team members and to manage SI projects. The leadership style includes four categories, such as directive leadership, supportive leadership, participative leadership, and achievement-oriented leadership. This study has examined the project managers' competency and suggests the three competency factors, which are technical, human, and conceptual shills, for the success of SI projects and customer satisfaction. The study suggests that SI project managers should master the three critical skills and knowledge requirements, and consider the proper leadership style for the successful implementation of SI projects. Also SI project managers should consider contingency factors such as project size and duration and outcome variables such as protect performance and customer satisfaction so as to enhance the leadership effectiveness.