• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.819-820
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• 2009

Standish Group 조사에 의하면 1994년부터 2004년까지 10년간 소프트웨어 프로젝트의 원가 초과율이 180%에서 56%로 낮아졌고 납기 초과율은 164%에서 84%로 낮아져 프로젝트의 품질 수준이 높아진 것으로 조사되었다. 이러한 결과의 교훈은 SW 프로젝트를 보다 작은 시간 프레임으로 나눠 짧은 시간 프레임 내에서 설계, 프로토타이핑, 개발, 테스트를 반복적으로 수행하고 소프트웨어가 자라는 방식의 프로세스 적용이라고 설명했는데 이러한 특징을 갖는 것이 바로 애자일(Agile:기민한) 방법론이다.[1] 그렇다면 애자일 방법 적용이 과연 프로세스 품질 성숙도를 어느 정도 충족시킬 수 있는지에 대한 접근도 이제는 필요하다. 본 연구에서는 웹 서비스 제품 개발 프로세스에 Agile 방법론 중 하나인 Scrum 방법론을 적용한 조직의 사례를 통하여 프로세스 품질 성숙도 요소 충족 여부를 분석함으로써 애자일 방법론을 적용한 조직의 프로세스 품질 성숙도 측정에 도움을 줄 수 있을 것이다.

• Journal of the Semiconductor & Display Technology
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• v.22 no.2
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• pp.104-111
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• 2023

The semiconductor industry, which relies on global supply chains, has recently been facing longer lead time for material procurement due to supply chain uncertainties. Moreover, since increasing customer satisfaction and reducing inventory costs are in a trade-off relationship, it is challenging to determine the appropriate safety stock level under demand and lead time uncertainties. In this paper, we propose a framework for determining safety stock levels by utilizing the optimization method to determine the optimal safety stock level. Additionally, we employ a linear regression method to analyze customer satisfaction scores and inventory costs based on variations in lead time and demand. To verify the effectiveness of the proposed framework, we compared safety stock levels obtained by the regression equations with those of the conventional method. The numerical experiments demonstrated that the proposed method successfully reduces inventory costs while maintaining the same level of customer satisfaction when lead time increases.

• Journal of Digital Contents Society
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• v.12 no.4
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• pp.593-600
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• 2011

In the case of the domestic medical industry, work is conducting according to the convenience of the developer without guiding principles regarding tailoring and a number of processes and products that should not have been omitted considering the characteristics of corresponding sites were discovered. As a result of this omission, it was found that the delivery period was not met and problems arose for an extensive period of time after the activation of the system. The lack of critical processes and products had a negative impact on the productivity and quality of the software. This paper defines the processes that need to be followed as a basis and the products that need to be prepared during the development of a medical information system. Also, additional processes and products are presented depending upon the condition of the project. Especially, the step-by-step assessment processes and products to manage the assessment results were seriously dealt with in this study to strengthen the compliance of processes and the product quality.

• 제어로봇시스템학회:학술대회논문집
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• 1997.10a
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• pp.844-847
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• 1997

In this paper, scheduling problem is dealt for the minimization of due date penalty for the customer order. Multiproduct batch processes have been dealt with for their suitability for high value added low volume products. Their scheduling problems take minimization of process operation for objective function, which is not enough to meet the customer satisfaction and the process efficiency simultaneously because of increasing requirement of fast adaptation for rapid changing market condition. So new target function has been suggested by other researches to meet two goals. Penalty function minimization is one of them. To present more precisely production scheduling, we develop new scheduling model with penalty function of earliness and tardiness We can find many real cases that penalty parameters are divergent by the difference between the completion time of operation and due date. That is to say, the penalty parameter values for the product change by the customer demand condition. If the order charges different value for due date, we can solve it with the due date period. The period means the time scope where penalty parameter value is 0. If we make use of the due date period, the optimal sequence of our model is not always same with that of fixed due date point. And if every product have due date period, due date of them are overlapped which needs optimization for the maximum profit and minimum penalty. Due date period extension can be enlarged to makespan minimization if every product has the same abundant due date period and same penalty parameter. We solve this new scheduling model by simulated annealing method. We also develop the program, which can calculate the optimal sequence and display the Gantt chart showing the unit progress and time allocation only with processing data.

• The Journal of the Korea Contents Association
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• v.20 no.6
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• pp.415-424
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• 2020

Recently, the elevator industry in Korea has been divided into the high speed elevator market and medium-low speed elevator market, and SMEs are making rapid progress in the medium-low speed fields. Usually, since the elevator manufacturer receives an order for installation after the construction of the building structure, it is necessary to promptly create a optimal elevator model and layout drawing in an earlier stage of sales activity due to the limited time to elevator installation. This study analyzes the sale and design works of the elevator SMEs, examines the areas that can be efficiently improved, and integrates the preceding our studies from the viewpoint of efficiency improvements at sales and design business process in the elevator industry. After that, we proposed an integrated framework of sales and design process for the elevator SMEs industry, and developed a prototype software system for automating the creation of optimal elevator model, layout drawing of elevator and BOM(Bill Of Material) list.

• Journal of the Korea Convergence Society
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• v.11 no.6
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• pp.197-201
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• 2020

The molybdenum cup and molybdenum pin, which are the main materials of the molybdenum electrode used for the LCD BLU CCFL electrode, did not been developed in Japan and all of them are imported and used from Japan, is giving a competitive burden. In this research, to develop the manufacturing technology of molybdenum pin used for CCFL electrode of LCD BLU, development of linear processing technology, development of molybdenum wire surface treatment technology, development of wire cutting technology, production of molybdenum pin, design and fabrication of JIG and Fixture for inspection, molybdenum pin prototyping and analysis, and development of 100% molybdenum pin inspection technology. In this paper, especially, research on design and manufacturing of JIG and Fixture for molybdenum pin manufacturing and inspection is treated.

• The Transactions of the Korea Information Processing Society
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• v.3 no.1
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• pp.1-8
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• 1996

A conveyor system in corrugated manufacturing industry may be in charge of carriage/storage, and may control logistics flow and production activities of products in a manufacturing process which consists of corrugators, conveyors, and printer-slotter systems. It identifies problems that the conveyor system in this case study is overloaded and often operated manually. This research is to evaluate e the conveyor system though simulation model of technological evaluation beyond d eco-nomic and qualitative one. The rate of operation and the load of the conveyor system are used as parameters in the simulation. This paper suggests a direction to a new conveyor system implementation the basis of the results that are derived by new alternatives based on current model. The best alternative is supposed to be the number of conveyors and the operation times of the printer-slotter that may be increased at the same time.

• The Journal of the Korea Contents Association
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• v.14 no.1
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• pp.1-13
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• 2014

RP(Rapid prototyping) technology is widely used to reduce the cost and cycle time of new prototypes in industries as new product development cycle time currently shortened and the voice of customers also become to be diversified. In this study, RP skill used in making jewelry products was adapted to develop the metallic inlaying base of traditional handicraft products as the significance of CAD/CAM technologies was increased. The RP technology showed that it helped the handicraftsman to cut the groove for inlaying metalic wire more easily, uniformly and diversely than conventional handicraft technique in making the groove with undercut shape. Therefore this study showed that RP technology applied for the metalic inlaying base achieved more elaborate, intricate and uniform patterns, not depending on craftsmanship, compared with conventional handicraft skill in terms of quality, cost and delivery.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.35 no.1
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• pp.33-37
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• 2011

In the fields of display, optics, and energy, it is important to improve micropattern-machining technology for achieving small patterns, large surface areas, and low cost. Unlike flat molds, roll molds have the following advantages: they can be manufactured within a short time, larger surface areas can be obtained, and continuous molding can be achieved. In this study, we aim to investigate the causes for errors in the shapes for a micropattern-machining process, and we show that by compensating the dynamic balance of roll molds, the dimensional accuracy of machined parts can be improved. The experimental results show that dynamic-balance compensation for a roll mold reduced the mass unbalance and the vibrations of the roll mold, and as a result, the dimensional accuracy of machined micropatterns has been improved.

• Journal of Technology Innovation
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• v.28 no.2
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• pp.37-61
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• 2020

This research aims to empirically examines the effects of competition factors on satisfaction and its on repurchase intent for SME's technology development products in the public procurement market, and to empirically verified the moderating effect of policy conformity. The result shows that the competition factors all have a significant positive effect on satisfaction, and that satisfaction has a significant positive effect on the intent to repurchase. In addition, the policy conformity shows a significantly moderating effect in the relationship between competitive factors and satisfaction and also, there was a significant difference in repurchase intention according to the buyer's innovativeness. This research has important implications that it provides innovative SMEs with practical implications for establishing marketing strategies in the public procurement market and extending the study of customer satisfaction centered on the private market to the public purchase market.