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문서 공유 권한의 동시성 제어를 통한 EDI 보안 서비스의 구현
강현석(Hyunseok Kang),이강일(Kangil Lee),김창일(Changil Kim),한상학(SangHak Han),이주헌(JooHeon Lee) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅲ
Internet-EDI서비스는 문서내 정보의 기밀성 뿐만 아니라, 다수 사용자의 동일 문서에 대한 공유 및 접근 권한의 안정적인 제어를 서비스 구현의 필수적인 요소로써 요구하고 있다. 이에 본 논문에서는 각 문서에 따른 사용자의 접근 권한을 차등적으로 부여하여, SIB(Security Information Base)내에 테이블로 관리하고, 이를 통해 각 사용자가 동시에 공유된 문서에 대해 서로 상이한 역할을 갖게 함으로써 인터넷 상에서 구현될 기존의 EDI 보안 서비스를 보완 하였다.
건설중장비 제품 개발을 위한 차량 동역학 해석 모델에 관한 연구
강현석(Hyunseok Kang),김성환(Sunghwan Kim) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
There are many types of road machinery in the construction equipment industry; the single drum compactor is one of the road machineries areas. When the compactors work on the road construction segments, the operators of the compactors could have high vibrations from the engine vibration and drum vibration through the unbalanced mass in drum. To reduce high vibrations transferred from the compactors engine and drum is one of key activities during the product development process. When we develop the compactor machines, it’s very important for the design engineers to find the dynamic behaviors by the vehicle dynamic perspectives. The vehicle dynamic analysis could give design engineers optimal design concepts at the early phase of product development process. The authors present efficient ways of vehicle dynamic analysis model development for compactors which is the combination of vehicle dynamic model and simplified human body model. One advantage of the combined vehicle dynamic analysis model is simple and easy to use.
건설중장비 제품개발 초기 단계에서의 라디에이터 진동 설계
강현석(Hyunseok Kang),김성환(Sunghwan Kim),강종민(Jongmin Kang) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.10
The working conditions of construction equipments such as excavators, wheel loaders and haulers are very tough and severe in fact. To design main components of construction equipment under the severe environment, it’s important for engineers to consider design for vibration durability point of view at the early stage of product development process. Radiator as a cooling unit of construction equipment is one of critical components to apply design for vibration. We present a design for vibration process and methodology on the radiator system in construction equipment industries. From the natural frequency and the random vibration analysis based on field vibration test data, we could find current status of radiator layout design to develop and made best layout specification of radiator design to decide for product development process at the early stage.