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김영춘,반성원,이건일 ( Young Choon Kim,Seong Won Ban,Kuhn Il Lee ) 한국센서학회 1997 센서학회지 Vol.6 No.2
In this paper, we propose an efficient coding method of remotely sensed satellite image using region classification and interband prediction. This method classifies each pixel vector considering spectral characteristics of satellite image data. Then we perform the classified intraband VQ to remove sp ti l (intraband) redundancy for a reference band image. To remove interband redundancy effectively, To perform the classified interband prediction for the remaining band images. Experiments on LAND AT TM satellite image show that coding efficiency of the proposed method is better than that of the conventional Gupta`s method.
에지 영역을 보상한 원격 센싱된 인공위성 화상의 부호화
김영춘,이건일 ( Young Choon Kim,Kuhn Il Lee ) 한국센서학회 1997 센서학회지 Vol.6 No.5
In this paper, we propose a coding method of remotely sensed satellite image with edge region compensation. This method classifies each pixel vector considering spectral reflection characteristics of satellite image data. For each class, we perform classified intraband VQ and classified interband prediction to remove intraband and interband redundancies, respectively. In edge region case, edge region is compensated using class information of neighboring blocks and gray value of quantized reference bands. Then we perform classsified interband prediction using compensated class information to remove interband redundancy, effectively. Experiments on LANDSAT TM satellite images show that coding efficiency of the proposed method is better than that of the conventional methods.
국내 사용 후 화학촉매제품의 재자원화 현황 및 향후 방향
김영춘,강홍윤,Kim, Young-Chun,Kang, Hong-Yoon 한국자원리싸이클링학회 2017 資源 리싸이클링 Vol.26 No.3
화학촉매제품은 석유화학공정, 대기오염방지시설, 자동차 배기가스 정화 장치 등 다양한 분야에 적용되고 있다. 국내외 화학촉매 시장은 매년 증가하고 있는 추세이며, 그에 따라 발생되는 폐촉매량도 증가하고 있다. 탈황 폐촉매, 자동차 폐촉매 등 대부분의 사용 후 화학촉매제품은 유가금속을 함유하고 있어 경제적 가치와 자원 확보 측면에서 매우 중요한 순환자원이다. 이에 일부 도시광산업체를 통해 유가금속을 회수하는 재자원화 공정이 상용화 되어 있고, 사용 후 SCR 탈질 촉매제품은 일부 재제조를 통해 자원순환되고 있다. 이에 본 논문에서는 사용 후 화학촉매제품의 재자원화 산업 지원 정책 수립의 기초자료로 활용이 가능하도록 주요촉매제품별 국내 발생량 및 재자원화 현황을 조사 분석하였으며, 사용 후 화학촉매제품의 자원순환 활성화를 위한 발전과제를 제시하였다. Chemical catalyst products are applied to various fields such as petrochemical process, air pollution prevention facility and automobile exhaust gas purifier. The domestic and overseas chemical catalyst market is increasing every year, and the amount of waste catalyst generated thereby is also increasing. Most of the used chemical catalyst products, such as desulfurized waste catalysts and automobile waste catalysts containing valuable metals are important recyclable resources from a substitute resource point of view. The recycling processes for recovering valuable metals have been commercialized through some urban mining companies, and SCR denitration catalysts have been recycled through some remanufacturing companies. In this paper, the amount of domestic production and recycling of major catalyst products have thus been investigated and analyzed so as to be used as basic data for establishing industrial support policy for recycling of used chemical catalyst products. Also tasks for promoting the recycling of used chemical catalyst products are suggested.
김영춘(Young-Choon Kim),조문택(Moon-Taek Cho),주해종(Hae-Jong Joo),김갑수(Kab-Soo Kim),김옥환(Ok-Hwan Kim),김현종(Hyun-Jong Kim) 한국산학기술학회 2014 한국산학기술학회 학술대회 Vol.- No.-
식물의 성장에 있어서 여러 종류의 빛 파장을 이용하여 식물 잎의 각 기관에서의 이상징후에 의한 파장의 반사/흡수 및 형광발관 등에 관한 연구가 이루어지고 있다. 본 논문에서는 가시광선 영역과 NIR 영역에 있어서 식물잎의 반사 잎을 이용하여 식물 잎의 수분함량을 포함한 스트레스 측정방법을 제안했다.
섬수 ( Bufonis Venenum ) 추출물의 약리작용
김영춘(Young Hoon Kim),정성학(Seong Hak Jeong),김종호(Jong Ho Kim),최재묵(Jae Mook Choi),지준환(Joon Hwan Ji),강재구(Jae Koo Kang),박종구(Jong Koo Park),김제학(Je Hak Kim),조희재(Hi Jae Cho) 한국응용약물학회 2001 Biomolecules & Therapeutics(구 응용약물학회지) Vol.9 No.1
N/A Bufonis Venenum is a toad venom and its main components are bufadienolides, namely resibufogenin, bufalin and cinobufagin. The desensitizing effect of Bufonis Venenum is useful for the treatment of the premature ejaculation in Chinese medicine. But, minor components of Bufonis Venenum cause problems such as topical burning, pain, and erectile dysfunction. To clarify and eliminate the components responsible for these side effects, we prepared two extracts of Bufonis Venenum with either 70% ethanol or ethylacetate and tested their pharmacological effects. The extract of Bufonis Venenum with 70% ethanol produced pain response in rat hind paw, and exhibited contraction of rabbit corpus cavernosal muscle in vitro. On the other hand, the ethylacetate extract did not cause pain and smooth muscle contraction. The desensitizing effect of the ethylacetate extract was similar to that of the 70% ethanol extract. In conclusion, these results show that the extract of Bufonis Venenum with ethylacetate does not have the components causing side effects and deserve further study for therapeutic potential in premature ejaculation in men.
정전기 불량 방지를 위한 습도센서 일체형 항습유지장치의 온/습도 확인 및 자동제어
김영춘(Young-Choon Kim),김옥환(Ok-Hwan Kim),김영만(Young-man Kim),이호준(Ho-Jun Lee),한준호(Jun-Ho Han),이부형(Boo-Hyoung Lee) 한국정보기술학회 2014 Proceedings of KIIT Conference Vol.2014 No.5
습도센서 일체형 항습유지장치는 주변의 온/습도를 센서로 파악하고 얻은 데이터값을 활용하여 요구되는 온도에 따른 습도값을 자동으로 유지시킬 수 있다. 또한 리모컨을 통해 수동으로 조절하여 미세물분자생성장치를 가동 및 중지하고 항습유지장치를 제어할 수 있다. Assembled Humidity Sensor, Humidity Keeping Device can be grasped by a sensor temperature/humidity and to automatically maintain the humidity value according to the temperature required, with the values of the data obtained. Moreover, stopping and operating the generator of the molecules of fine water are adjusted manually using theremote control, it is possible to control the Humidity Keeping Device