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우영제 ( Young-je Woo ),김유리 ( Yu-ri Kim ),유우종 ( Woo-jong Yoo ) 한국정보처리학회 2012 한국정보처리학회 학술대회논문집 Vol.19 No.2
본 논문에서는 임베디드 시스템 기반 NXT 로봇을 제어하여 길찾기, 미로찾기, 장애물오르기 등의 주행을 수행하는 프로그램을 개발하는 것이다. 미로 찾기는 RBG 센서를 통해 트랙의 색을 구분하여 정해진 색을 따라 주행하는 하는 것이며, 장애물 미로구간에서는 NXT 로봇 자신이 장애물을 넘지 못한다는 것을 인식하여 미로를 찾아 빠져나가도록 초음파 센서를 이용한다. 초음파 센서로 자신이 통과할 수 있는 진입로로 판단되면 주행을 계속하며, 그렇지 않은 경우에는 좌우회전을 통해 미로구간을 통과한다. 마지막 계단식 장애물 구간에서는 접촉센서와 초음파 센서를 통해서 물체의 높이를 가늠하여, 접촉센서 값과 초음파 센서 값을 통해 프로그램은 통과 여부와 계단높이를 판단한다. 실험결과 로봇은 제어프로그램 시나리오에 따라 적절하게 수행함을 확인할 수 있었으며, 이와 같은 로봇 제어를 확대하면 사람을 대신하는 재난구조 활동, 전쟁시 지뢰탐지 및 적 정찰활동, 지하공동구 및 지하매설물 안전 점검활동 등을 수행하는 업무로 적용이 가능할 것으로 판단된다. 본 연구에서 사용한 로봇은 I-Brick이라는 마이크로프로세서를 통해 프로그램을 구동되며, 저 전력으로 I-Brick과 그와 연결된 센서와 서브 모터 등을 구동하고 제어하도록 설계하였다.
민정기,우영제,Min, Jeong-Ki,Woo, Young-Je 한국공간구조학회 2015 한국공간구조학회지 Vol.15 No.3
Numerical model on precast prestressed concrete (PC) hollowcore slabs using 11.3 mm diameter 7-wire stand was developed based on finite element analysis. In order to validate the modelling, previous experiment results with respect to prestressed solid concrete slabs were used and compared throughout the course of fire exposure. In addition to, the fire performance of hollowcore slabs with different aggregate types, moisture contents and compressive strength of concrete was investigated. As a result, it can be seen that the type of aggregates and moisture contents used in hollowcore slabs can affect the fire performance as well as temperature developments.
기포제를 사용한 구조용 경량 모르타르의 특성 및 열적성능 평가에 관한 실험적 연구
장인기(Jang In-Gi),우영제(Woo Young-Je),이한승(Lee Han-Seung),유조형(Yoo Jo-Hyeong),심규섭(Sim Kyu-Sup) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.6
The objective of this study is determining the mechanical property of light and strong preformed structural lightweight foamed concrete using the mineral foam agent. Also the structural lightweight foamed concrete has superior property of insulation and lightweight because it has many inner. So, the structural lightweight foamed concrete used to need property of insulation. Experiment was done to examine mechanical and insulation properties of the specimen according to the variation of structural lightweight foamed concrete is superior than ordinary portland concrete. Moreover, it is known that the concrete has enough for member when foaming agent proportion is 0.4∼0.5%.
웹을 이용한 가상 실시간 상호작용 분산 시뮬레이션 환경에서 클라이언트-서버 모델의 설계 및 구현
정진립(Jeong Jin Lip),우영제(Woo Young Je),정창성(Jeong Chang Sung) 한국정보처리학회 1999 정보처리학회논문지 Vol.6 No.1
The simulation which is larger scale, complex and interactive with clients treat a lot of messages. It can be thinking more efficient distributed simulation than sequential one. The training simulation with multi-users is geographically distributed, and required high cost to operate and maintain system as increasing user requirements. The adaptation of web technology to the simulation can be a way to solves it without cost added. But dynamic web environment can causes causality error of events. This paper is concerned with client-server model, which supports interaction between distributed simulation server and web browser, and it is implemented by Java and Java distributed object model. The result have shown that the distributed simulation is performed correctly on dynamic environment.
습윤 환경 구조물에 적용하는 누수균열 보수용 방수씰의 성능평가 방법에 관한 연구
강효진 ( Hyo Jin Kang ),우영제 ( Young Je Woo ),강호경 ( Hoo Keong Kang ),오상근 ( Sang Keun Oh ) 한국건축시공학회 2002 한국건축시공학회 학술발표대회 논문집 Vol.2 No.2
Since the basement building like the communication hole and etc. is built under the ground where it is pressed by the water, the leakage happens due to the dried-shrinking crack, the sinking crack, the creation of the work-joint of the building and etc. caused by the character of the material and construction way of the reinforced concrete building. Especially, a lot of repair for the leakage cannot help but being taken in temporary way without any noticeable countermeasure. Therefore, this kind of repair is socially criticized many times that this is defective construction even if this costs a lot. The fundamental reason of the above mentioned symptoms can be found in the creation of the work-joint caused by the character of the concrete building, the limitation of the physical performance of the existing water-proof and repair material, the limitation of the construction, the limitation of the physical sustaining performance of the concrete building, the limitation(heat-injury, deterioration) of the constancy of the durability caused by aging and etc. Therefore, in this study, we would like to present the better understanding on the water-proof seal relating to the application at the spot and its test evaluation related data since the necessity of the establishment of the quality control standard and the performance testing way on the relevant water-proof seal is rising a lot to regulate the water-proof technology and the leakage repair technology in accordance with the growth of the demand on the facility.