비모수 분석모형을 활용한 인터넷비즈니스의 수확체증법칙에 관한 실증연구

박명섭,서상범,Park, Myung-Sub,Seo, Sang-Beom 한국경영정보학회 2003 Asia Pacific Journal of Information Systems Vol.13 No.4

This article attempts to examine the well-known law that the increasing returns to scale(IRS) is effective in the Internet business. The effect of IRS is one of the hottest issues in the Internet business sector. Many cases and survey studies support the fact that the IRS phenomenon exists in the Internet business. Executives in Internet business generally give a deep trust on this theory. As the Internet business grows, however, the boundary of the business becomes widened and complicated. And each category of Internet business is characterized with a different business style and economic behavior. It may, therefore, be dangerous to accept that the phenomenon of IRS is applied to all areas of Internet business. For this reason, the research for the close look into the IRS phenomenon should provide significant implications for the managers in the Internet business industry. This article divides the internet business into four sub-areas, and analyzes the IRS phenomenon using AHP/DEA-based full ordering technique. Interpretations are given, based upon the research results, for each sub-area of Internet business, as a guideline of setting business strategies for practical managers.

DEA-AR를 이용한 우리나라 도로화물운송업체의 효율성 분석

박명섭(Myung Sub Park),안영효(Young Hyo Ahn) 한국SCM학회 2003 한국SCM학회지 Vol.3 No.2

공급체인관리(Supply Chain Management) 성과 측정 프레임워크에 관한 연구

박명섭(Myung Sub Park),안영효(Young Hyo Ahn) 한국SCM학회 2003 한국SCM학회지 Vol.3 No.1

국내 물류정보 시스템의 구축전략 연구

박명섭(Myung Sub Park),문태수(Tae Soo Moon),서상범(Sang Bum Seo) 한국경영학회 1995 經營學硏究 Vol.24 No.4

This paper aims at providing the strategy for developing Logistics Information System(LIS) suited to Korean logistics environment. The present development level and the relative importance of each function were examined for various LIS`s which are currently implemented in Korean industry, and Spearman correlation analysis was performed. The result indicated that Korean firms had invested in their LIS without considering the priorities of functional importance. This paper, thereby, proposed a contingency model which could help a firm develop the LIS agreeable to the functional priorities suiting the uniqueness of individual firm. Logistics-related functions are categorized into three types, for each of which improvement strategies were provided. This paper also examined the principal problems incurred in the process of developing and operating LIS particularly in view of the System Development Life Cycle(SDLC), and proposed the sources of the problems and their solution strategies for each stage of SDLC.

제조기업 물류센터 공동화에 관한 연구

박명섭(Myung Sub Park),김선희(Seon Hee Kim),박병인(Byung In Park) 한국경영학회 2000 經營學硏究 Vol.29 No.1

Despite that Korean firms made much effort to improve the performance of logistics system throughout 90`s, logistics costs in the companies have been increased continuously. The authors claim that most improving effort to logistics system might have been incorrectly directed. Recently many firms built their own logistics centers or warehouses in an effort to reduce logistics costs, but the decisions turned to be improper in most cases. Improper in two points: trivial in logistics volume and scare in personnel, who are able to plan and operate logistics system efficiently. The results were increases in total inventory. long-term dead inventory, and logistics related personnel. Consequently, their logistics costs were not decreased but increased even with newly equipped logistics centers. In addition, crowding phenomenon of logistics centers toward Seoul area worsens efficient utilization of logistics centers. This study attempts an economic cost-benefit analysis of using public logistics centers by the hedonic price theory, proposes alternative ways to improve the problems, and suggests strategies for warehousing decision as a means to improve operating efficiency of the logistics center in an individual company.

기술혁신 기반의 전략적 변화

박명섭(Myung Sub Park),이종민(Jong Min Lee) 한국경영학회 2010 Korea Business Review Vol.14 No.1

2000년까지 연간 8억톤의 철강재를 생산하였던 세계 철강업계는 BRICS로 대표되는 신흥국의 경제성장 등의 요인으로 21세기에 들어서 연평균 7.8%이상 성장하여 2007년에는 연간 13억 600톤의 철강재를 생산하였다. 철강산업은 무역장벽이 철폐됨에 따라 업계 내 경쟁이 심화되는 양상을 보이고 있으며, 특히 최근에는 업체 간 인수 및 합병으로 인한 대형 글로벌 철강사의 출현으로 새로운 경쟁 패러다임에 직면해 있다. 또한 세계 대형 철강기업은 성장성과 수익성을 확보하기 위해서 동시 다발적으로 고부가가치 제품 전략을 추구하고 있다. 본 연구는 한국의 대표적인 철강기업인 포스코가 기술혁신을 통하여 상업화에 성공한 FINEX 기술의 사례연구로서, 그 개발과정과 의미에 대하여 조명하고자 한다. 이를 위해 우선 포스코가 세계 최초로 개발 및 상업화에 성공한 신 제선기술인 FINEX의 개발배경과 역사를 살펴본 후, 성공요인을 제시하고 있다. 또한 FINEX 기술개발의 성과에 대한 평가와 함께, FINEX 기술의 미래와 경영상의 시사점을 제시하고 있다. Global steel industry has grown very rapidly through economic growth of BRICs- countries since the 2000’s. To get a competitive advantage, the paradigm of steel industry is shifting toward new direction such as diminishing barriers in trade and appearance of huge steel maker through M&A. In addition, global steel mills are focusing on producing higher value added products and developing new production process to lower the production costs and to meet the needs of environment issues. The purpose of this study is to describe the cause and consequences of FINEX developed by POSCO. FINEX is the first commercialized technology among new iron ore reduction processes. To achieve the study purpose, the history and development process of FINEX are reviewed, then the success factors of FINEX are analyzed. In addition, the performance and future direction of FINEX are explained. Finally, managerial implications of this technology are also discussed.

데이터마이닝 기법을 이용한 철강기업의 시간당 수익성 탐색 - P사의 열연제품을 중심으로 -

박명섭(Myung-Sub Park),유성찬(Seong-Chan Yoo),안영효(Young-Hyo Ahn) 한국생산관리학회 2005 韓國生産管理學會誌 Vol.16 No.2

기존의 기업 수익성 분석은 회계, 재무, 생산공정 등 일정부분에 집중되었으며, 산업별 또는 제품군별 특성을 반영한 다양한 분석은 이루어지지 않고 있다. 철강기업의 경우도 단순한 제품의 톤당 수익성분석의 범주에서 크게 벗어나지 못했다. 최근 경영환경의 급격한 변화와 기업간 경쟁의 심화로 의사결정자들은 보다 세분화되고 정교한 분석, 즉 직접적으로 수익성에 영향을 미치는 요인 연구와 이를 고려한 수익성 예측을 원하고 있다. 컴퓨터의 지속적 발달과 다량의 경영관련 자료가 데이터베이스화됨에 따라 과학적이고 효율적인 수익성분석이 가능해 졌다. 본 연구에서는 데이터마이닝 기법을 이용하여 철강기업의 시간당수익성을 연구한다. 실제 사례분석을 통해 철강제품 특성을 고려한 시간당수익성을 탐색 및 예측한다. The analysis of profitability has been focused on business fields such as finance, accounting, and manufacturing process so far. Accordingly, it is needed to study on specified factors affecting profitability of specific area such as a steel industry. In this paper, we demonstrated how to explore and forecast the profitability per hour of a steel company using data mining. Furthermore, we classified into two groups, good group and bad group based on factories and steel classes. Through this analysis, we present an efficient methodology to evaluate the time based performance and to support decision making on improving productivity and profitability of the steel industry.

그룹 테크놀로지에서 제조 셀 구성을 위한 신경망기반 프로토타입 의사결정지원시스템

박명섭(Myung Sub Park),황인수(In Soo Hwang) 한국경영학회 1996 經營學硏究 Vol.25 No.3

This paper presents a prototype decision support system(DSS) suited for forming the manufacturing cells in group technology(GT). The DSS has been designed to support the decision problem of restructuring prior manufacturing cells completely or partially along with the changing conditions in a manufacturing system, and developed to incorporate the what-if capability in order to support decision makers more effectively. All data necessary in forming manufacturing cells are stored and managed through the database system in the DSS. Carpenter-Grossberg`s neural network (CGNN), which is known to be simple in logic and strong in performance, has been modified and used as a problem solving method in the model base of the DSS. It is expected that the framework of the proposed DSS be accommodated to incorporate many other algorithms developed for manufacturing cell formation and be applied to different areas of decision making problems.

대기이론과 시뮬레이션의 상호보완을 통한 컨테이너 터미널의 선박처리 시스템 분석

박명섭(Myung Sub Park),박병인(Byung In Park),박광태(Kwang Tae Park) 한국경영학회 1999 經營學硏究 Vol.28 No.1

This paper analyzes the quayside ship handling system of a container terminal using queueing theory and simulation simultaneously. In particular, we present that the ship`s interarrival distribution of BCTOC (Busan Container Terminal Operation Corporation) is an exponential distribution. Meanwhile we say that the system is a heterogeneous multiserver with different erlang service times: berth #52 6-erlang, and berth #53, #61 & #62 5-erlang respectively. Even though we build a queueing model through the process of estimation of statistical distribution, the model is too complicated to analyze because of having large shape parameters. Thus, we should get performance measures using simulation. Results of simulation (average waiting time 9.83 hours, average berthing time 17.13 hours, occupation rate 84.125%, and the number of arrival ships 1720) are similar to real data. However, waiting time is greater than real data by 1.2 hours, which is due to the fact that shipping companies themselves adjusted a traveling schedule because of BCTOC`s congestion. Only 36.9% of total arrival ships were begun to serve in less than an hour and 12.9% of ships waited for more than 24 hours. Therefore, the service level of the system was so poor that it needs the expansion of the container terminal.

다계단 재고모형의 활용에 관한 연구

박명섭(Myung Sub Park),류연욱(Yeon Uk Ryoo) 한국경영학회 2002 經營學硏究 Vol.31 No.2

This paper presents a readily applicable model for determining the optimal Concurrent Spare Parts inventory levels, attempting to foster the real world situation. The supply and repair system for the advanced electronics equipment is comprised of three main echelon: Base support phase made up of several bases equipped with their own maintenance machinery; Depot support phase with limited maintenance and support capabilities; and Overseas supply phase which handles the international production and supply. This article classifies spare parts into two board categories: Assembly and Component. The presented repair algorithm is as follows. When a detective item, whether an assembly or a component, is identified, immediate replacement is to be considered from stored inventories before considering repairment. When an assembly fails and if the inventory for the assembly is insufficient, the presented procedure attempts to utilize the inventories of the components. It is also possible, when in need, to replenish the assembly from adjacent bases. The results of this analysis show that the presented model outperforms previous models in reducing the supply and repair time. When a certain level of equipment utilization is to be sustained within the minimal amount of budget, the multi-echelon inventory model would also yield sufficient cost reduction. It is claimed that the results of this paper would raise an issue of improving traditional approaches in Concurrent Spare Parts acquisition and inventory management.