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完全組立 生産工程에서 MRP의 最適Lot Size決定에 관한 硏究
이내형 瑞逸專門大學 1992 論文集 Vol.10 No.-
The purpose of this paper is to decide an optimal Lot Sizing Method and Lot Size in the typical perfect assembly lines. In this paper, it is suggested that the optimal Lot Sizing Methods in the typical perfect assembly lines be LTC(Least Total Cost) and PPB(Part Period Balancing). To select proper Lot Sizing Methods, it is necessary to computerize MRP System input data and to understand the MRP System itself before applying the Lot Sizing Methods. Through these studies, we should make efforts to develop the MRP System package suitable for the environment and conditions of Korean enterprises.
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이내형 瑞逸專門大學 1995 論文集 Vol.13 No.-
There are two methods to evaluate the economin performance of the product quality : one is the method to evaluate the Quality Cost which is used to produce that product and the other is the method by designing the product or process to produce it at the lowest possible cost. The aim of this paper is to determine external failure cost. We assume that weibull distribution and bimodal distribution, as a result modeled quality failure coat in free warranty period.
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作業測定에 관한 硏究 : Work Sampling에 의한 作業硏究
이내형 瑞逸傳門大學 1988 論文集 Vol.7 No.-
To observe all the subjects of the method engineering on the factor of production is impossible actually. Therefore, it is useful the work sampling which presumes the whole with satisfactory reliability and accuracy through the sampling method. The purpose of this study is to increase the productivity through to eliminate of non-productive behaviours and calculate of reasonable delay.
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調達其間을 갖고 있는 減損發生 在庫에 있어서 定量發注模型에 대한 考察
李來亨 瑞逸專門大學 1993 論文集 Vol.11 No.-
In the existing decay models allow random demand, it is assumed that the leadtime for placing an order is zero. However, the assumption is known to be unrealistic in practice. In this study the effects of probabilitic leadtime on optimal lot size and reorder point is investigated and lost sales case is compared with backorders case. The results of testing this model indicate that first, reorder point is higer in proportion to decay ratio, second, reorder point in lost sales case is higher than backorders case, and third, order quantity is slightly influanced by decay ratio.
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作業測定에 관한 硏究 : Work sampling을 中心으로
李來亨 瑞逸專門大學 1994 論文集 Vol.12 No.-
For continuous growth and development of an enterprise, a time researcher is first necessary to increase skills with respect to and effective management of production resources. Accordingly, we must understand the real situation of the factor of labor. Actually to observe all the subjects of the method engineering on the factor of production is impossible. Therefore, the work sampling es useful which presumes the whole with satisfactory reliability and accuracy through the sampling method. The purpose of this study is to increase the productivity through to eliminate of non-productive behaviours and calculate of reasonable delay.
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李來亨 論文集 1982 論文集 Vol.3 No.-
In our modern industrial society, the growth of Enterprises is believed to depend upon the high productivity. For higher productivity, all the constituent members of industries should here their own voices in the management of industries, and develop not only the most efficient technique but also its faithful contents. This paper is a study on the establishment of the standard working hours that plays on importont role in promoting the productivity of industries. As a seientific and reasonable method in establishing the standard working hours, the standerd working hours are closely connected with the evaluation technigue of working hours and also it is very helpful to inprove the above thchnigue.
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이내형 瑞逸專門大學 2000 論文集 Vol.18 No.-
This paper proposed the E-HTTP, a new certification service ensures the confidentiality of users, establishing a corporation to hold in common security keys including digital signtures, transactions, certificates and provides safeguards of dealings among them for the Internet. It provides effective means for users to check the completeness and spoofing of message by using the hessh functuon MD-5 and accomplish the trust of order from purchasers adding digital signatures to a part of tjeir messages.
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미들웨어를 이용한 데이터베이스에서 Gateway Server 인증시스템에 관한 연구
이내형 瑞逸大學 1999 論文集 Vol.17 No.-
본 논문에서 제안한 게이트웨이 서버 인증 시스템(GSAS)는 데이터베이스 인증 시스템이다. GSAS는 사용자 인증, 권한관리, 감사서비스를 책임지고 있다. GSAS에 의해서 필터링된 사용자들만이 미들웨어를 통해서 데이터베이스에 접근할 수 있다. GSAS는 DBMS에 로컬 게이트웨이에 위치에 있고, 이미 특정한 데이터베이스를 접근하는 사용자에 대한 인증 레코드를 가지고 있다. GSAS는 몇 개의 요소들로 구성되어 있다. 즉 인증관리자, 권한관리자, 감사관리자로 명명된다. 인증관리자와 권한관리자가 동시에 pass를 승인함으로써, 사용자는 DBMS의 접근성을 부여받는다. 본 논문에서, GSAS는 서버 자체로 필터링함으로써 접근하는 악의를 가진 데이터베이스 침입자로부터 특정 DBMS를 보호한다. 그리고 또한, 데이터베이스 보안은 3단계 인증을 통해서 검사받은 사용자만을 허용함으로써 인증 강도를 강화했다. The Gateway Server Authorization System(GSAS) presented in this thesis is a database authorization system. GSAS is responsible for user's authorization, and privilege management, audit service. Only users that are filtered in GSAS can access the DBMS(Data Base Management System) through middleware. GSAS is located at the DBMS and already contains an authorization record for user accessing a specific DBMS. GSAS on consists of several components, namely an authorization manager, a privilege manager, and an audit manager. As an authorization manager and a privilege manager can only approve a pass at the same time, a user can get accessibility for DBMS. In this thesis, GSAS prevents specific DBMS from invaders that have a malcious intention of accessing it by filtering into GSAS inself, and also Database Security is strengthened by user management which is tested through a three-step authorization process
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