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실리카가 혼합된 하이브리드 수지의 주차장 바닥마감재 적용 특성에 관한 연구
오상근(Oh, Sang-Keun),최성민(Choi, Sung-Min),채우병(Chae, Woo-Byung) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.10
The thermo-hardening epoxy resin is widely used in the various industries including the construction and civil engineering for its adhesiveness, chemical resistance and electric properties. However, when epoxy resin used finishing material for concrete slab, it had appeared to the peeling by decreasing bond strength in wet condition, weakness of impact, lack of film rigidity and corrosion, lack of eco-friendliness, and noise in car driving. When hybrid resin checked as the optimal mixture ratio applied on the surface of concrete floor, we want to know the application characteristics of the hybrid resin integrated the silica for covering the surface of concrete Floor by evaluating the mechanical strength changing and the environmental effect in the parking lot by testing the wheel load characteristics. As a result of wheel load test and the other test related on indoor environmental in this study, the hybrid resin is judged to the suitable materials for the concrete floor than the epoxy resin.
다중해상도 영상정보를 이용한 가보필터 기반 지문영상 개선
오상근,박영섭,박철현,김범수,원종운,박길흠,Oh Sang-Keun,Park Yeung-Sub,Park Chul-Hyun,Kim Bum-Su,Won Jong-Un,Park Kil-Houm 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.11C
본 논문은 영상의 다중 해상도 정보를 이용하여 지문영상을 개선하는 새로운 방법을 제안한다. 지문영상에서 융선 진행의 변화가 심한 특이영역에서는 화소단위의 필터링을 수행하고, 완만한 변화를 보이는 영역에서는 블록 단위의 필터링을 선택적으로 수행함에 따라, 개선영상의 품질은 향상되며, 연산 량은 감소한다. 실험에 따르면 화소단위의 필터링에 의한 개선 방법에 비하여 연산 속도는 매우 빨라졌으며, 결과영상으로부터의 특징점 인식율의 비교에 따라 개선영상의 품질이 향상됨을 확인할 수 있었다. A new fingerprint image enhancement algorithm using multiresolution information and Gabor filter is proposed in this paper. The proposed algorithm performs selection of the region in image according to inclusion of singular points and then performs enhancement using Gabor filtering of the region adjusted in its size. Gabor filter using representative direction in the same block is used in the region that the direction of ridge is not changed much, while Gabor filter using pixel based direction is used in the region that the direction of ridge is changed much. This method can reduce processing time for enhancement using Gabor filter and preserve the merit of Gabor filter.
절연용 통기완충 시트와 폴리우레탄 도막 방수재를 복합 적층한 탈기 시스템에 관한 연구
오상근,박봉규,고장렬,박윤철,김수련,Oh, Sang-Keun,Park, Bong-Kyu,Ko, Jang-Ryeol,Park, Yoon-Chul,Kim, Su-Ryon 한국건축시공학회 2002 한국건축시공학회지 Vol.2 No.1
This study deals with the characterizing and the application like as insulation materials in the joint part in concrete surface layer and waterproofing sheet especially for roof slabs. Using steel materials and butil-rubber tape to band waterproofing sheet and concrete surface together before this waterproofing system will be applied. It can be expected to both the curability and the watertightness by coating poly-urethane 2 or 3 times with sheet surface. Therefore this waterproofing system can be possible to protect water without the damage when vapor is going out from concrete and without air pockets because of the difference temperature inside and out. This system particularly consists of air bents and elastic waterproofing sheet considering the physical damage while water can cause purely physical damage. This system is one of the most efficient ways of waterproofing system without air pocket.
수용성 뿜칠형 고무 아스팔트 방수재의 시공성 평가에 관한 연구 - 재료 조건을 중심으로 -
오상근,배기선,이원헌,곽규성,최은수,Oh, Sang-Keun,Bae, Kee-Sun,Lee, Won-Hun,Kwak, Kyu-Sung,Choi, Eun-Su 한국건축시공학회 2003 한국건축시공학회지 Vol.3 No.2
This study deals with the estimation of material properties according to the construction condition for water-soluble rubberized asphalt waterproofing material of spray type. In this study, the waterproofing material property by the spray construction method is suggested by means of estimation its tensile performance and temperature dependency according to mix proportion ratio(4:1, 8:1), referenced viscosity and solid content (A:360cps, 76%, B:580cps, 79%, C:490cps, 70%), spray angle($30^{\circ}$, $45^{\circ}$, $60^{\circ}$), and spray distance(30cm, 50cm, 70cm). The result of testing are as follows. (1) The mix proportion ratio of principal agent and hardener is 4:1. (2) The viscosity referenced and solid content are 490cps and 70%. (3) The spray angle referenced is $45.^{\circ}$ (4) The distance referenced from concrete surface to spray gun is 40~50cm.