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Needle Punched Nonwoven Fabrics for Automobile Interior Application
조기순,김부영,조나경,김한성,Cho, Ki-Soon,Kim, Bu-Yeong,Cho, Na-Kyung,Kim, Han-Seong The Korean Fiber Society 2009 한국섬유공학회지 Vol.46 No.4
It is important for automobile manufacturers to eliminate unwanted noise in passenger compartments of vehicles. One of the methods free from noise is to use sound absorbing materials such as floor coverings, package trays, door panels and luggage compartments in auto interiors. In this study, the needle punched nonwovens were produced with the various blending ration of Non-circular shaped polyester, 2 denier and splittable micro-fiber, 2 denier. The sound absorption characteristic of nonwovens and corresponding mechanical properties are explored.
Fiber Properties of Needle-punched Nonwoven Fabrics on Air Filter Applications
조기순,김부영,조나경,김한성,Cho, Ki-Soon,Kim, Bu-Yeong,Cho, Na-Kyung,Kim, Han-Seong The Korean Fiber Society 2009 한국섬유공학회지 Vol.46 No.5
Various fiber types consisting of a single nonwoven fabric were investigated to provide a combination of good strength and filtration characteristics. Polyester staple fiber (PSF) 3, 6, and 15 denier, low melting PSF (LM-PSF) 4 denier, 3-ball-type, non-circular shaped, PSF 2 denier (NC-PSF), and splittable micro-PSF 2 denier (SM-PSF) that were divided into 8 pieces by needle punching force were used for investigation. The effects of the enormous increase in the surface area and the reduction in pore size due to the use of finer fibers are reported. As the fiber denier size was reduced, the dust arresting efficiency increased and the air permeability decreased. The dust arresting efficiency also increased with increasing SM-PSF content.
조기옥 ( Ki-ok Cho ),조명진 ( Myungjin Cho ),김한정 ( Han-jeong Kim ),김상훈 ( Sang-hoon Kim ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.1
본 논문에서는 집적 영상(Integral imaging)에서 3차원 영상을 자유시점에서 재생하는 방법에 대해 설명한다. 집적 영상은 완전시차와 연속적인 시점을 제공하기 때문에 자유시점 재생을 사용하여 3차원 물체의 측면을 재생할 수 있다. 따라서, 이러한 3차원 데이터를 사용하여 보다 향상된 3차원 영상의 시각화 및 패턴 인식이 가능할 수 있다. 이를 증명하기 위해 컴퓨터 시뮬레이션을 수행하였다.
중풍환자의 급성요도염에 대하여 단독 한방처방 투여로 치료한 1례
한진안,조기호,김정진,Han, Jin-An,Cho, Ki-Ho,Kim, Jung-Jin 대한한방내과학회 2002 大韓韓方內科學會誌 Vol.23 No.2
Urinary tract infection(UTI) is one of the common complications in stroke patients. As it has negative effect on the recovery of stroke, it should be cured out immediately. But antibiotics might cause some adverse reactions such as diarrhea, eruption, anorexia, nausea and vomiting. so there have been several reports about treating urinary tract infection with Traditional Korean Medication. We treated a 54-year-old male patient with cerebral hemorrhage, who had had neurogenic bladder after stroke and had been urinated by intermittent catheterization. About 10 days later, he could void by himself without catheter, but showing the symptoms of UTI; Voiding pain, hematuria and yellowish pus. The pus culture grew Staphylococcus spp., which was resistant to most of antibiotics except vancomycin and teicoplanin. Based on accompanying symptoms of intermittent dizziness, headache, insomnia, nocturnal sweating, weak pulse, red tongue and urinary problem, we differentiated him as the deficiency of Yin of the Kidney[腎陰虛] and treated with Gagamyookmijihwang-tang (Jia-Jian-Liu-Wei-De- Huang-Tang), which improved his urinary symptoms and other general conditions without any side effect. In next follow-up culture, there was no pathogen. We conclude that Traditional Korean Medicine based on differentiation is useful in the treatment of urinary tract infection.
김영준,조기옥,한재승,조명진,Kim, Youngjun,Cho, Ki-Ok,Han, Jaeseung,Cho, Myungjin 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.12
본 논문에서는 집적 영상과 컴퓨터 재생 기술을 활용한 3차원 QR 코드 생성 기술을 제안한다. 제안하는 기술에서는 2차원 QR 코드를 네 개의 면으로 나누어 각각의 면을 서로 다른 깊이에 배치한 뒤 깊이가 추가된 3차원 QR 코드를 합성조리개 집적 영상과 컴퓨터 재생 기술을 사용하여 생성한다. 이 과정에서 3차원 영상 기술 중 하나인 집적 영상 기술을 사용한다. 마지막으로, 3차원 QR 코드를 집적영상을 이용하여 컴퓨터 재생을 한 뒤 각 면을 배치했던 깊이 부분에서 영상을 재생하고 조합하면 3차원 QR 코드를 읽을 수 있다. 따라서 QR 코드를 읽을 때 보안을 강화할 수 있다. 본 논문에서는 제안된 기술이 QR 코드를 읽을 때 보안을 강화할 수 있음을 보이기 위하여 광학적 실험과 컴퓨터 재생을 수행하였다. 또한, 재생 깊이를 알고 있을 때, 3차원 QR 코드를 읽을 수 있음을 보였다. In this paper, we propose three-dimensional (3D) quick-response (QR) code generation technique using passive 3D integral imaging and computational integral imaging reconstruction technique. In our proposed method, we divide 2D QR code into 4 planes with different reconstruction depths and then we generate 3D QR code using synthetic aperture integral imaging and computational reconstruction. In this 3D QR code generation process, we use integral imaging which is one of 3D imaging technologies. Finally, 3D QR code can be scanned by reconstructing and merging 3D QR codes at 4 different planes with computational reconstruction. Therefore, the security level for QR code scanning may be enhanced when QR code is scanned. To show that our proposed method can improve the security level for QR code scanning, in this paper, we carry out the optical experiments and computational reconstruction. In addition, we show that 3D QR code can be scanned when reconstruction depths are known.