• 대한안전경영과학회지
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• 제17권2호
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• pp.207-214
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• 2015

The purpose of this paper is an application of AHP(Analytic Hierarchy Process) in the priority setting of promising technology in division of senior friendly product based on the previous studies. In this paper, the decision criteria for evaluating promising technologies in division of senior friendly product are identified and the hierarchical structure of decision making process is developed systematically. Subsequently the values of weights for relative importance among decision criteria are derived using AHP methodology, and the score of importance of promising technology in division of senior friendly product with respect to each criterion is evaluated. Finally the score of each promising technology in division of senior friendly product is quantified in order to prioritize them. We discuss implications of our results with a viewpoint of technology policy in division of senior friendly product.

• 대한수학회논문집
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• 제38권3호
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• pp.847-863
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• 2023

We introduce the study of generic lightlike submanifolds of a semi-Riemannian product manifold. We establish a characterization theorem for the induced connection on a generic lightlike submanifold to be a metric connection. We also find some conditions for the integrability of the distributions associated with generic lightlike submanifolds and discuss the geometry of foliations. Then we search for some results enabling a generic lightlike submanifold of a semi-Riemannian product manifold to be a generic lightlike product manifold. Finally, we examine minimal generic lightlike submanifolds of a semi-Riemannian product manifold.

• 대한수학회보
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• 제60권6호
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• pp.1641-1650
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• 2023

It is our goal in this study to present the structure of isotropic mean Berwald Finsler warped product metrics. We bring out the rich class of warped product Finsler metrics behaviour under this condition. We show that every Finsler warped product metric of dimension n ≥ 2 is of isotropic mean Berwald curvature if and only if it is a weakly Berwald metric. Also, we prove that every locally dually flat Finsler warped product metric is weakly Berwaldian. Finally, we prove that every Finsler warped product metric is of isotropic Berwald curvature if and only if it is a Berwald metric.

• 한국정보과학회논문지:소프트웨어및응용
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• 제37권6호
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• pp.470-479
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• 2010

감정어 추출과 관련하여 기존 영어권 연구에서 제시된 방법의 대부분은 한국어에 직접 적용이 쉽지 않다. 한국어권 연구에서 제시된 방법 중 수작업에 의한 방법은 감정어 추출에 많은 시간이 걸린다는 문제점이 있다. 영어 시소러스 기반 한국어 감정어 추출 기술은 한국어와 영어 단어간 일대일 부정합에서부터 기인하는 정확도의 저하를 제고해야 하는 과제를 갖고 있다. 한국어 구문 분석기를 기반으로 한 연구는 출현 빈도가 낮은 감정어를 선정하지 못할 수 있는 문제점을 내포하고 있다. 본 논문에서는 한국어 상품평 중 단순한 문장에서 감정어를 자동으로 추출하는 데 있어 기존에 제안된 한국어권 연구에 상호 보완적으로 정확도를 향상시킬 수 있는 k-Structure(k=5 또는 8) 기법을 제안한다. 단순한 문장이라 함은 패턴 길이를 최대 3으로 한다. 이는 평가 대상 상품(예를 들어 '카메라')의 속성 명 f (예를 들어 카메라의 '배터리')를 기준으로 ${\pm}2$의 거리에 감정어가 포함되어 있는 문장을 의미한다. 성능 실험은 국내 주요 쇼핑몰로부터 수집한 1,868개의 상품평을 대상으로 미리 주어진 8개의 속성 명에 대한 감정어를 k-Structure를 이용하여 자동으로 추출하고 그 정확도를 평가하였다. 그 결과, k=5일 경우 평균 79.0%의 재현률, 87.0%의 정확률을 보였고, k=8일 경우 평균 92.35%의 재현률, 89.3%의 정확률을 얻을 수 있었다. 또한, 영어권 연구에서 제안된 방법 중 PMI-IR(Pointwise Mutual Information-Information Retrieval) 기법을 이용하여 실험을 수행하였다. 이 결과, 평균 55%의 재현률과 57%의 정확률을 보였다.

• 시스템엔지니어링워크숍
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• 통권4호
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• pp.159-162
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• 2004

In order to care about preserving the environment for future generations, each country has been required to make the laws of the environment. So manufacturers must design, manufacture and sell goods that meet customer's need and must do this while meeting the needs of the environment. In this research we have developed product structure and configuration management system that treats electronic catalogs for recycling of train parts. This research focused on two system. One is JAVA-based electronic catalog that give the information about recycling of train parts. The other is product structure and configuration management system based on electronic catalog and Bill of Materials(B.O.M)

• 한국가구학회지
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• 제19권6호
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• pp.428-438
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• 2008

Through this study, I developed a new-styled desk for public reading in library in consideration of the characteristics of the company "KIFURS Co., Ltd." established and branded by a part of the members of the association 'Gyeonggi-Incheon Furniture Industry Cooperative', in the background of growing library-furniture market situation according to the government policy and the related participations of competitive companies. The differentially designed product was herein presented by introducing the function of office furniture and related material, by giving the existing product some improvements on the basis of the domestic and international data searching. The characteristic of the developed product is that the basic structure of the desk for public reading is easy to assemble & disassemble and also variable to be extended & modified. This basic structure is available to be mass production and to be pricewise through using aluminum. Furthermore it can be used as other library-furniture and office furniture, too. Also the luxury image was pursued by modern shape and different material, unlike the existing library-furniture.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 추계학술대회 논문집
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• pp.969-971
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• 2000

In this paper, shortening of product life cycle and wide disposal of consumer product have given rise to many environmental problems, it needs to propose module design principle for saving of disassembly cost and reusing of used part and subassembly. To analyze characteristics of module for recycling, materials and function of part and subassembly must be classified. In disassembly process, a unit operation can be grasped for disassembly function, worker, tool and sorting process. As a result of applying module design principle, simpler structure and reduced structural interference can be realized for product structure. For disassembly, simpler disassembly and quicker disassembly can be obtained for recycling.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회A
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• pp.1176-1180
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• 2008

This paper represents a study on design hypothesis to improve properties of a product. The functional requirements and function structure of various technical products are analysed. From the above analysis we could formulate one hypothesis. This hypothesis also satisfies basic rules clarity, simplicity and safety that are required in all design cases. The hypothesis says that functional requirements is refined to improve and if there are components which have the same function, they can be integrated into one component and improved. A one-handed faucet was developed by applying the above hypothesis to a two-handed faucet. The design of heat exchange tester was be improved successfully through the hypothesis.

• 한국경영과학회지
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• 제17권3호
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• pp.101-135
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• 1992

An an exploratory attempt, this study examines the patterns of strategic changes of the firms and changes in strategic group structure in response to environmental changes of the industry. Empirical analyses of 39 firms in the Korean tile industry for the period of 1986-1990 reveals that :1) environmental changes had different impacts on attractiveness of different product/market segments :2) the relatively large firms in less attractive product/market segments were more likely to change their domains :3) according to their specific target product/market segments, the firms tended to strengthen different resource capabilities which were identified as key success factorss to compete in each target segment : and 4) these differences in strategic changes of the firms resulted in the changes in strategic group structure during the same period. Implications and the limitations of this study are finally discussed.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.435-435
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• 2000

Light Rail Transit (LRT) system is a complex and large system in which there are many subsystems, interfaces, functions and demanding performance requirements. Because many contractors participate in the development, it is necessary to apply methods of sharing common objectives and communicating effectively among all of the stakeholders. This paper shows not only the methodology and the results of computer-aided systems engineering including requirement management, functional analysis and architecting LRT system, but also propose a tool to help manage a project by linking WBS (Work Breakdown Structure), work organization and PBS (Product Breakdown Structure). The application of computer-aided tool RDD-100 provides the capability to model product design knowledge and decisions about important issues such as architecting the top-level system. The product design knowledge will be essential in integrating the following life-cycle phase activities over the life of the LRT system. Additionally, when a new generation train system is required, the reuse of the database can increase the system design productivity and effectiveness significantly.