http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한광희,김동진,윤정호,정의원,김창성,조규성,채중규,김종관,최성호,Han, Kwang-Hee,Kim, Dong-Jin,Yun, Jeong-Ho,Jung, Ui-Won,Kim, Chang-Sung,Cho, Kyoo-Sung,Chai, Jung-Kiu,Kim, Chong-Kwan,Choi, Seong-Ho 대한치주과학회 2004 Journal of Periodontal & Implant Science Vol.34 No.3
The Palatal masticatory mucosa was widely used as a donor site in periodontal and implant surgery. but there were relatively few studies investigating the thickness of the palatal mucosa in dentate subjects. The purpose of this study was to study the thickness of palatal masticatory mucosa in korean subjects by direct clinical technique. Forty systemically and periodontally healthy subjects(20 males:20 females) participated in this study. A bone sounding method using a periodontal probe with minimal anesthesia and a prepared clear acrylic stent was utilized to assess the thickness of palatal mucosa at 24 measurement points defined according to the gingival margin and mid palatal suture. The results are as follows; 1. Mean thickness of palatal masticatory mucosa was $3.5{\pm}0.4mm$. and no gender differences were identified in the thickness of palatal masticatory mucosa. 2. The thickness of palatal masticatory mucosa increased from canine to second molar area(with the exception of the first molar area). canine and first molar areas were significantly thinner than other areas(P<0.05). 3. The thickness of palatal masticatory mucosa significantly increased in the sites farther from the gingival margin towarding the mid-palate(P<0.05). The results suggest that within the limits of the present study, premolar area appears to be the most appropriate donor site for soft tissue grafting procedures.
2016년 1월 폭설을 동반한 제주도 한파의 원인 재고찰
한광희,구호영,배효준,김백민,Han, Kwang-Hee,Ku, Ho-Young,Bae, Hyo-Jun,Kim, Baek-Min 한국기상학회 2022 대기 Vol.32 No.3
In Jeju, on January 23, 2016, a cold surge accompanied by heavy snowfall with the most significant amount of 12 cm was the highest record in 32 years. During this period, the temperature of 850 hPa in January was the lowest in 2016. Notably, in 2016, the average surface temperature of January on the Polar cap was the highest since 1991, and 500 hPa geopotential height also showed the highest value. With this condition, the polar vortex in the northern hemisphere meandered and expanded into the subtropics regionally, covering the Korean Peninsula with very high potential vorticity up to 7 Potential Vorticity Unit. As a result, the strong cold advection, mostly driven by a northerly wind, around the Korean Peninsula occurred at over 2𝜎. Previous studies have not addressed this extreme synoptic condition linked to polar vortex expansion due to the unprecedented Arctic warming. We suggest that the occurrence of a strong Ural blocking event after the abrupt warming of the Barents/Karas seas is a major cause of unusually strong cold advection. With a specified mesoscale model simulation with SST (Sea Surface Temperature), we also show that the warmer SST condition near the Korean Peninsula contributed to the heavy snowfall event on Jeju Island.
왜곡 보정 기법을 이용한 ALC 블럭의 자동 검사 시스템 개발
한광희(Kwang-Hee Han),허경무(Kyung-Moo Huh) 大韓電子工學會 2010 電子工學會論文誌-SC (System and control) Vol.47 No.1
렌즈 왜곡현상은 비전 시스템에 있어 필연적인 현상이며 가격과 시스템의 크기를 줄이기 위한 렌즈의 선택으로 왜곡현상은 점점 더 심해지고 있다. 이와 같은 추세로 왜곡보정의 필요성은 중대한 문제가 되고 있지만 기존의 카메라 모델을 이용한 왜곡보정 방식은 복잡하고 많은 연산이 필요한 문제점이 있다. 비전 검사에서 디지털 이미지의 효과적인 왜곡 보정은 물체 탐지 및 인식의 전제 조건이다. 복잡한 모델링, 대규모 계산과 한계 정보 손실 같은 전통적인 왜곡 보정 알고리즘의 결점을 극복하기 위해 본 논문에서는 사진측량적 기법을 보정 기법으로 이용하였다. 이 방법은 표준 격자 배열의 이미지를 이용하여 왜곡 이미지를 보정하는 방법으로, 제안하는 방법을 이용하여 ALC 블럭의 검사 시스템에 실험한 결과 약 4㎳의 처리시간을 단축하였으며, 사람의 육안에 의한 검사보다 검사의 에러율이 2.3% 줄어들었다. The lens distortion in the machine vision system is inevitable phenomenon. Distortion is getting worse, due to the selection of lens in the trend of reducing prices and size of the system. In this trend, the distortion correction becomes more important. But, the traditional correction methods has problems, such as complexity and requiring more operations. Effective distorted digital image correction is the precondition of target detection and recognition based on vision inspection. To overcome the disadvantage of traditional distortion correction algorithms, such as complex modeling, massive computation and marginal information loss, an image distortion correction algorithm based on photogrammetry method is proposed in this paper. In our method, we use the lattice image as the measurement target. Through the experimental results, we could find that we can reduce the processing time by 4㎳. And also the inspection failure rate of our method was reduced by 2.3% than human-eyes inspection method.
한광희(Han, Kwang Hee),엄태성(Eom, Tae Sung),이상현(Lee, Sang Hyun),안강우(An, Kang Woo) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.2
이 연구에서는 조적허리벽이 있는 RC기둥의 거동을 분석하였다. 기둥과 조적허리벽 사이의 합성작용을 고려하여 기둥의 유효강성을 정의하였다. 조적허리벽의 높이를 기준으로 기둥의 상부와 하부의 강성을 달리하여 조적허리벽에 의한 단주효과를 고려한 비선형 해석을 수행하였다. In this study, the behavior of RC column with partial height masonry infill was proposed. The effective stiffness of the column was definded by considering the composite effect of the column and the partial height masonry infill.. Based on the height of the masonry, stiffness of column was defined differently. Non-linear analysis was performed considering short-column effects.
한광희(Gwang Hee Han),진형민(Hyung Min Min),박우배(Woo Bae Park),김준기(Jun Gi Kim),전정수(Chung Soo Chun) 대한두경부종양학회 1994 대한두경부 종양학회지 Vol.10 No.2
During a 9-year period(March 1985 to February 1994), 111 consecutive total thyroidectomies and modified or radical neck dissections were performed at 81. Vincent Hospital, Catholic University Medical College, for benign and malignant disease. There were three permanent complications, persistent hypoparathyroidism, in total thyroidectomies. Overall complications were observed 20(62.5%) in benign diseases, 47(59.5%) in malignancy. In benign and malignant thyroid diseases. the complications were transient hypoparathyroidisms (28.8%), transient hoarsenesses(21.6%), wound infections (3.6%), bleedings(3.6%), and permanent hypoparathyroidisms(2.7%). Our experience suggests that the morbidity of total thyroidectomy relates primarily to the extracapsular extension, necessitating en bloc exision accompanied by additional lymph node dissection. The low incidence of permanent complications in thyroid disease suggests the feasibility of total thyroidectomy as the operation of choice when surgeons are familiar with the technique and indications.
히스토그램 변환을 사용하여 정확도를 향상시킨 외관 Vision 검사 방법
한광희(Kwang-hee Han),허경무(Kyung-moo Huh) 대한전자공학회 2009 電子工學會論文誌-SC (System and control) Vol.46 No.4
각종 전자 제품 및 부품의 외관 검사는 인간의 시력에 의해 이루어졌다. 외관 검사는 LCD Panel, flexible PCB 및 다른 여러 가지 전자부품에 적용되어진다. 전자 제품의 외관검사를 사람의 시력에 의존할 경우 작고 미세한 전자 제품은 검사자의 신체와 정신에 따라 검사 결과가 변화하기 때문에 안정적인 결과를 기대 할 수 없다. 머신비전 시스템은 이러한 문제가 발생되지 않는다. 따라서 머신 비전 시스템은 현제 여러 외관 검사 분야에서 사용되어지고 있다. 하지만 머신 비전 시스템에 의한 자동 검사는 작업장의 조명에 의한 영향을 많이 받는다. 본 논문에서는 이러한 영향을 극복하기 위한 방법으로 히스토그램변환을 이용한 머신비전 검사의 정확성 향상 방법을 제안한다. The appearance inspection of various electronic products and parts was executed by the eyesight of human. The appearance inspection is applied to the most electronic component of LCD Panel, flexible PCB and remote control. If the appearance of electronic products of small and minute size is inspected by the eyesight of human, we can’t expect the stable inspection result because inspection result is changed by condition of physical and spirit of the checker. Therefore currently machine vision systems are used to many appearance inspection fields instead of inspection by human. The many problems of inspection by the checker are not occurred in machine vision circumstance. However, the inspection by automatic machine vision system is mainly influenced by illumination of workplace. In this paper, we propose a histogram transform method for improving accuracy of machine visual inspection.