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박원배,문덕철,고기원,Park, Won-Bae,Moon, Deok-Cheol,Koh, Gi Won 한국지하수토양환경학회 2012 지하수토양환경 Vol.17 No.6
This study is to suggest a few efficient ways of rainwater utilization, through monitoring and analyzing 143 rainwater storage systems and 110 artificial recharge systems, which are installed in the recommended facilities by law, among the rainwater harvesting systems in Jeju Island. In the case that catchment facilities are damaged, rainwater could be contaminated by leaves and debris so that the rates of rainwater usages come to be lower. It is possible that contaminated rainwater could contaminate artificial recharge wells or rainwater discharging out of the rainwater harvesting system could result in flood and damage for the downgradient area. For maintaining high quality of rainwater and increasing rainwater utilization rate, it is necessary to install screening facilities and purification plant functioning precipitation and filtration. Also, in order to efficiently preclude the overflowing rainwater exceeding storage capacity, it is recommended to associate rainwater storage tanks with artificial recharge well or infiltration trench facilities.
웨이브릿 변환계수들의 대역별 상관관계를 이용한 영상압축 방법
박원배(Park Won Bae),안재형(Ahn Jae Hyeong) 한국정보처리학회 1998 정보처리학회논문지 Vol.5 No.12
This paper proposes an image compression technique using inter/intra-subband correlations between the wavelet transformed coefficients. It exploits a 2?2 block of transformed coefficients in LL-subband as a root node. If a block has not significant coefficients then the block is coded using only one symbol to increase the coding efficiency. Also the position informations are coded by the adaptive arithmetic coding. Results of Simulation show that the proposed method provides better performance more 3.4%u33C8 than the JPEG compression method.
박원배(Won-Bae Park),이영신(Young-Shin Lee) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
In this study, an application of crack morphology variables in the Leak-Before-Break(LBB) evaluation for nuclear piping systems is investigated, including influences on the leakage crack size and crack instability loads. The crack surface roughness and the number of flow turns as a function of the crack opening displacement are applied to LBB evaluations for KSNP pressurizer surge line, for which fatigue and stress corrosion cracking are considered as failure mechanisms. As a result, there would be a significant impact on safety margins to acceptance criteria for the surge line if crack morphology variables are applied additionally to the current regulatory guide without re-analyses for justification of safety factors being applied on the leakage crack size and piping loads for evaluations.
스테레오 비전 기반 Light Drawing 시스템 구현
박원배(Won-Bae Park),박창범(Chang-Bum Park),백두원(Doo-Won Paik) 한국콘텐츠학회 2010 한국콘텐츠학회논문지 Vol.10 No.2
Light Drawing은 사진 촬영 기법 중 하나로, 어두운 방이나 밤에 빛이 나는 물체의 움직임을 노출 기법을 이용하여 촬영 한 것이다[1]. 사용자가 Light Drawing을 만들려 한다면 장 노출 카메라가 필요하고, 어두운 환경이 필요함으로 제한사항이 따르며 사용자는 3차원 공간에 그림을 그리는 것에 어려움을 느낀다. 반면에 포토샾과 같은 컴퓨터 드로잉 툴을 사용하여 Light Drawing 효과를 낼 수 있다. 그러나 마우스나, 타블렛과 같은 입력 장치는 실제로 그림을 그리는 행위와 차이가 나기에 사용자들의 흥미를 반감시킨다. 본 논문에서는 Light Drawing을 손쉽게 제작 가능한 디지털 컨텐츠를 제안한다. 스테레오 비전을 이용하여 빛의 3차원 위치 정보를 계산하고 Drawing Effect를 이용하여 3차원 가상 공간에 Light Drawing을 구현하였다. Light Drawing is a photographic technique which exposures are made at night or in a darkened room usually by moving a hand-held light source[1]. Due to the limitations of equipment and environment, users having difficulty in drawing a picture in 3D space. If user take a light drawing, they need a camera that have function and darkened environment. Alternative solution is that we can make a light drawing picture by using the computer drawing tool as in Photoshop. Nevertheless, this solution will let the User lose their interest in drawing because this solution cannot synchronize between the real action of human hand motion and the electronic input devices such as mouse and keyboard. This paper proposed a digital content that can make light drawing easier. We used a digital content that will facility Light Drawing easier. We can measure the light spot position by using the stereo camera. Based on the measured position of the light spot, we reproduce light drawing in virtual space by using drawing effect method.
제주 지역신문의 환경보도에 관한 내용분석 -제민,제주,한라일보를 중심으로-
박원배 ( Won Bae Park ),김병무 ( Byeong Mu Kim ) 제주대학교 탐라문화연구소 2011 탐라문화 Vol.0 No.38
환경은 우리의 일상생활과 밀접하게 연관을 맺고 생활의 테두리를 형성하고 있으며, 우리는 주로 언론을 통해 환경 관련 정보를 획득한다. 언론은 환경에 대한 정보제공 뿐만 아니라 감시·비판의 기능을 수행하는데, 특히 지역신문은 보다 지역적인 환경 이슈의 변화경향을 파악할 수 있다. 따라서 본 논문에서는 지역신문을 통해 보도되는 환경 관련 이슈가 어떻게 변화하고 있는지를 파악하기 위해 제주 지역 주요일간지를 대상으로 환경 관련 기사를 추출하여 내용분석을 실시하였다. 2000년부터 2009년까지 지난 10년간의 환경 관련 기사를 수자원, 자연생태계, 기후·기상, 오염, 개발, 기타 항목으로 구분하였고, 이를 양적으로 정량화하여 상대적 이탈지수를 산출하였다. 그 결과 2004년~2005년을 기점으로 각 항목들 간에 변화 양상을 살펴볼 수 있었다. 그 내용을 보면, 기사의 양적 빈도가 가장 높았던 수자원은 제주도의 지질학적 특성상 RDI값이 0에 근접하였고, 기후·기상, 자연생태계, 개발 항목은 연도별로 뚜렷한 변화양상을 보여주고 있었다. 각 항목들의 변화는 제주도가 추진하고 있는 각종 환경정책, 사업들의 변화와 밀접한 연관성을 갖고 있는 것을 알 수 있다. The environment is closely associated with our daily life and we acquire the environmental information mainly through the mass media. The mass media provide us not only the environmental information but also function surveillance and criticism. Especially, the local newspapers provide more regional trends of environmental issues compared to the mass media. The purpose of this study was to understand the trends of environmental issues of Jeju. Therefore, the environmental issues reported on the three different Jeju local newspapers (Halla, Jeju and Jemin) have been selected and analyzed using frequency of each environmental issue. The environmental issues reported from the year of 2000 until 2009 were categorized into water resource, natural ecosystem, climate/weather, pollution, development, and others. These categorized items were measured with frequency and obtained Relative Deviation Index (RDI) value. In the results, the overall significant changing pattern of the environmental issue was shown during the years of 2004 and 2005. And, only few items including natural ecosystem, climate/weather, and development were shown consistent changing pattern during the analysis period. However, water resource, which was most frequently reported by the local newspapers showed closely to the RDI value of 0 due to the geological characteristics of Jeju Island. The variation of each item could be related to the various political issues and changes of environment business plan.