http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김동철,주창환,박세영,Kim, Dong-Cheol,Ju, Chang-Hwan,Park, Se-Yeong 한국섬유공학회 1995 한국섬유공학회지 Vol.32 No.11
The dence of processing parameters on the air-jet textured(AIT) yarn was investigated to characterize the structural properties of acetate and viscose rayon fibers. The air-jet texturing nozzle employed was Hemaiet manufactured by Heberlein Co., Swiss and the samples were produced with four diffirent air pressures(i. e.,), 4, 5, 6kg/m2), usage of impact ball and dry/wet conditions. The structural characteristics investigated were yarn instability and fiber configurations such as floats, arcs, potrudes, and cross/closed loops. The results obtained though this experiment was as follows: (1) the instabilities of acetate and viscose A/T yarns were increased with raising the air pressure of nozzle and usage of impact ball due to the increase of loop frequency, (2) the texturing effect of regenerated fibers was partially enhanced by the water application and the use of the impact ball due to the decrease of filament friction and the increase of turbulent air flow in the nozzle, and (3) the surface characteristics of acetate and viscose A/T yarns had the stable loop structure with increasing the air pressure of the nozzle and water application.
Tb(Ⅲ)과 몇가지 아미노 카르복실 리간드 간의 착물에 대한 루미네센스 연구
김동철,배준현,김연두,강준길,Kim, Dong Cheul,Bae, Jun Hyun,Kim, Youn Do,Kang, Jun Gil 대한화학회 1997 대한화학회지 Vol.41 No.11
용액상태 Tb(III) 착물의 루미네센스 스펙트럼을 금속이온과 리간드의 몰비 및 용액의 pH 함수로써 조사하였다. 본 연구에 사용한 리간드는 iminodiacetate(IDA) 및 methyliminodiacetate(MIDA)이다. 배위환경에 민감하고 루미네센스 세기가 가장 큰 549 nm 방출띠($^5D_4→^7F_5$전이)를 탐침하여 $TbL^{3-}_3$ 착물 형성을 위한 최적 용액 조건을 규명하였다. The luminescence spectra of Tb(Ⅲ) complexes have been investigated as a function of molar metal-to-ligand ratio and pH. The ligands used in this study are iminodiacetate (IDA) and methyliminodiacetate (MIDA). The 549 nm emission band, most sensitive to the coordination environment among the observed bands, is monitored to reveal the optimum condition for $TbL^{3-}_3$ complex formation in aqueous state.
유리 외측 상박 감각신경 피판술을 이용한 종부 연부조직 결손의 재건
김동철,김상수,하대호,유희준,이동훈,Kim, Dong-Churl,Kim, Sang-Soo,Ha, Dae-Ho,Yoo, Hee-Jun,Lee, Dong-Hoon 대한미세수술학회 1999 Archives of reconstructive microsurgery Vol.8 No.1
Soft tissue defect on heel area of the foot present difficult problems particularly because of anatomic property of plantar surface of the foot. There is a paucity of available local tissue in the foot for coverage. In addition to having little expandable tissue, the foot's plantar surface has a unique structure, making its replacement especially challenging. Plantar skin is attached to the underlying bone by fibrous septa, preventing shear of the soft-tissue surfaces from the underlying skeleton. Plantar surface of foot is in constant contact with the environment. Protective sensibility also would be maintained or restored in the ideal reconstruction. So the ideal flap for reconstruction of the heel should include thin, durable hairless skin with potential for reinnervation. The aim of this article is to present a clinical experience of free lateral arm neurosensory flap for reconstruction of the heel. From March 1995 to December 1997, a total 16 lateral arm free flaps were performed to soft tissue defects on the weight-bearing area of the hindfoot. we used tibial nerve as recepient nerve in 11 and calcaneal branch of tibial nerve in 5 for restoration of sensibility of flap. All cases survived completely. A static two-point discrimination of 14 to 34mm was detected in the flap. Radial nerve palsy which was caused by hematoma in donor site occured in one case, but recorverd in 3 weeks later completely. In conclusion, the lateral arm free flaps are versatile, reliable and sensible cutaneous flap and especially indicated for soft tissue defect on plantar surface of the hindfoot which are not good indications for other better-known flaps.
김동철,Kim, Dong-Chul 한국식품연구원 2011 食品技術 Vol.24 No.1
본 내용은 에너지 절감형 곡류 및 식품 공정기술 및 관련 시스템 현지조사를 위하여 일본 국제식품박람회(Foodex Japan 2011)에 참관하여 쌀가루 신 생산기술 세미나 참석 및 곡류의 완제품, 활용제품 조사, 이송시설 및 집진설비 조사를 하였다. 또한 에너지 절감형 가공공정 및 HACCP 적용 관련 시스템 조사를 하고 Satake 등 곡류가공회사와 기술 협의를 하여 향후 연구에 반영하고자 한다.
모바일 RFID 시스템의 Private Zone에 적용 가능한 프라이버시 보호 기법
김동철,천지영,최은영,이동훈,Kim, Dong-Chul,Chun, Ji-Young,Choi, Eun-Young,Lee, Dong-Hoon 한국정보처리학회 2009 정보처리학회논문지 C : 정보통신,정보보안 Vol.16 No.2
모바일 RFID 시스템은 기존 RFID 시스템과 모바일 시스템이 결합한 차세대 핵심 기술로써 사용자에게 새로운 부가서비스를 제공하고 일상 생활에서 넓게 이용될 것으로 기대되고 있다. 하지만 모바일 RFID 시스템은 기존 RFID 시스템이 가졌던 프라이버시 문제 및 보안 취약성을 그대로 갖고 있으며 추가적인 프라이버시 및 보안문제를 발생시킨다는 문제점을 갖고 있다. 더군다나 이러한 문제점을 해결하기 위해 여러 기법들이 제안 되었지만 아직 현실에 적용하기 어렵거나 완벽히 안전성을 보장하지 못 한다는 문제점을 갖고 있다. 따라서 본 논문에서 모바일 RFID 시스템 환경에 적용 가능하고 안전한 프라이버시 보호 기법을 제안한다. 제안한 기법은 모바일 RFID 시스템 환경 중 개인의 프라이버시 보호가 필요한 환경인 Private Zone에 적용 가능한 기법으로 개인의 휴대 모바일 리더를 이용하여 프라이버시 보호가 필요한 자신의 태깅된 물품에 대해 자신 이외에 다른 리더에게 어떠한 정보도 제공하지 않도록 하는 기법이다. 추가적으로 제안한 기법은 서비스 거부 공격이나 시스템 오류가 발생했을 때 동기화를 유지하기 위한 과정을 획기적으로 줄인 향상된 기법이기도 하다. Mobile RFID system is a next generation technology which combines the existing RFID systems with mobile systems. It is newly expected to provide additional services and will be broadly used in everyday life; however, it sometimes causes the privacy or security problems generated by existing RFID systems and the additional privacy or security problems. Moreover, even if many methods have been proposed to solve those problems, it is still difficult to adapt to reality or to guarantee the security perfectly. Therefore, in this paper, we propose the secure and practicable privacy protection mechanism suitable to mobile RFID systems. proposing mechanism is applicable the mechanism to Private Zone of mobile RFID systems which require to protect the privacy. This mechanism suggests that own tagging-products needed to protect privacy using mobile reader of personal don't provide any information to other readers except their own reader. In addition to, proposing mechanism is the efficient mechanism which largely reduces the process to maintain the synchronization when happen to the DoS attack or system error.
병렬식 코일형 열교환기를 이용한 온수공급장치에 대한 연구
김동철Dong-Chul Kim,박찬혁(Chan-Hyuk Park) 한국IT서비스학회 2019 한국IT서비스학회 학술대회 논문집 Vol.2019 No.2
The present invention relates to a hot water supply system using a parallel coil type heat exchanger. The coil-type heat exchanger having a parallel structure installed inside the heat storage tank removes the pressure generated inside the heat storage tank, thereby greatly reducing the production cost of the heat storage tank. The present invention relates to a hot water supply apparatus using a parallel coil type heat exchanger capable of quickly supplying a constant amount of hot water at a constant temperature.