FMS도입 타당성 평가를 위한 유연성 측정 모형

하정진,이창섭 한국경영과학회 1991 經營 科學 Vol.8 No.2

As a result of the increasing competitive market environment and shorter product life cycle, the need for flexibility is increasing and has become a key objective in the design of manufacturing systems. Production flexibility is achieved by the ability to change a process from one mode of operation to another. And flexibility is the key reason for FMS investment. Most importantly, flexibility embodies competitive value for manufacturing. Although flexibility is recognized for its strategic importance to the future of manufacturing, the complex phenomenon of this concept are not well understood. The objective of this paper is therefore to offer a definition of flexibility and to propose a scheme for assessing value of flexibility as one of the performance measure of flexible manufacturing systems. A case example is then presented to illustrate the process of quantifying the proposed measures. And these measures are given to justify the investment of FMS installation.

學習現象을 反映한 製品組合 模型에 관한 硏究

河正鎭,徐洵根 동아대학교 공과대학 부설 한국자원개발연구소 1984 硏究報告 Vol.8 No.1

In this paper, the realistic product-mix model reflecting learning curve phenomenon that attempts to determine the optimal allocation of scarce resources is formulated by broad discussion for its issues. The use of learning curve has been receiving increasing attention in recent years, but little research has been appeared in the incorporation of learning effects into resource allocation and aggregate planning. Because objective function and constraints are nonconvex and seperable, solution procedure by convex envelope approximation is developed and applied to a practical example.

모험기업가와 모험사업에 대한 평가방안

하정진,김창준 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.-

Nowdays, the motives for introducing venture business within a corporation is required as following considerations: management diversifications, activity for the results of new technology development, creation of atmosphere for a new business, and quick response for the changes of demand structure on a new product. In addition, they will be met in the characteristics of the era of post industrialization such as knowledge-based industrial society and matrix organization for a corporation and society structure. In this paper, first, in order to reduce the failure of a new venture, we will analyze the general economic situations and industrial environment. The second is to review the determining factors in the evaluation of a new venture. The third is to examine the profile analysis and the feasibility analysis on technology, market, finance, organization, and competition which provide the means of analyzing strengths and weaknesses in a new venture. Finally the results from these inter-related studies are reported.

柔軟性에 의한 제조시스템의 評價 模型

하정진,이창섭,김성희 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.2

Flexibility has become a key objectives in the design of manufacturing systems and a critical measure of total manufacturing performance. The need for flexibility is increasing due to some environmental change such a changing technical characteristics of the products and the changing nature of market demands. Most importantly, flexibility embodies competitive value for a manufacturer. Therefore, the objective of this research is to offer a definition of flexibility as well as proposing a scheme for assessing the value of flexibility, one of the performance measures of manufacturing systems.

페트리 네트(Petri Net)를 利用한 FMS 모델 表現 方法

하정진,황규완,김성희 동아대학교 공과대학 부설 한국자원개발연구소 1994 硏究報告 Vol.18 No.2

Petri Nets is one of the analytical technique for solution of FMS problems. It is a graphical and mathematical modeling and promising tool for describing and studying systems that are characterized as being concurrent, asychronous, dynamic, distributed and parrallel. The objective of this study is to described analytical techniques of FMS and presented for FMS model by using Petri Net.

企業 附設 硏究所 活動實態에 관한 硏究 : 釜山·慶南地域을 中心으로

河正鎭,黃圭完,申大赫,兪炳哲 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.2

The research institute of an enterprise attaches have been enlarged in korea. This study grasps the status and the research activity in the research institute of an enterprise attached in the Pusan and Kyungnam. So, we find the important role in the research institute of a enterprise attached.

中小企業의 最低必要收益率에 관한 硏究

河正鎭 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.1

This paper aims to take out an effective decision in Small and Medium Firms through the theoretical and the case study according to MARR. The author studied the Attractive Rate of Return by the domestic Small and Medium Firms with each different debt rate. As result of study, the MARR is 13.6% by weighted average in the domestic Small and Medium Firms at this visual point and finding is that it is increased by order as Attractive Rate of Return as per the fund source being internal funds, deht and external funds. Therefore, the capital procurement through the internal funds and bank loan, rather than procurement of external funds is more favorite method.

인플레이션率과 株式收益率 사이의 關係에 관한 實證的 硏究

河正鎭,徐洵根,金承卓 동아대학교 공과대학 부설 한국자원개발연구소 1987 硏究報告 Vol.11 No.1

The purpose of this study is to investigate empirically the relationship between inflation rate and stock market return in Korean stock market. After the literature was reviewed, two regression models were tested for two periods, 1976-1980 and 1981-1986. The results show that there exists strong negative relation between two variables in the higher inflation period, on the contrary unsignificant positive relation in the lower inflation period. The major feature of this study is the use of Box-Jenkins' ARIMA fitted values as measures of expected inflation rates. But this study has many limitations and weaknesses from the view of theory building and research methodology, thus some directions of study are suggested.

접착제 산업의 전략적 기술에 관한 연구

하정진,김창준 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

Recently, due to the rapId growth of automobile, electonic, ship-building, and construction industries, the demand of adhesive increase fastly. According this situation, there are briskly to carry out the various efforts of domestic manufactuers on facility increase, new product development, and market establishment. The trend of grobal market after 2000 year are going to change over high functional adehesive for strengthening on the special functions, adhesives for upgrading easiness, safety, and exfoliation of use, high performnace adhesives for enlarging the application scopes, adhesives for automation, and adhesives for harmless to environment and human body. In this paper, we will search for the outlooks and problems of grobal and domestic market in adhesives industry. Along with these technology trend we will discuss the strategied and hopeful parts for adhesive industry after 2000 year.

시뮬레이션에 의한 投資分析

河正鎭,徐洵根,趙吉福 동아대학교 공과대학 부설 한국자원개발연구소 1987 硏究報告 Vol.11 No.1

In general, there are two methoes which investment proposals can be evaluated, one is deterministic approaches using single value or best estimates for the magnitude of returns and the other is pobabilistic approaches which involve probabilistically based analytical procedures and Monte Carlo simulation. The advantage of the method reflects much of reality more comprehensive than the former. This syudy estimates cumulative probabilistic distribution of internal rate of return and net present value using Monte Carlo simulation by combining variables; project cost, sales volume, unit sales price, operating cost and etc. The descriptive methods for discrete cash flows is proposed for use in economic risk analysis and numerically illustrated by microcomputer aided solution procedure. Further, to grasp the effect on the investment by variables, sensitivity analysis is carried out.