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- 저자 : 한광희(Han Kwang Hee) (검색결과 156 건)
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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.
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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.
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일본 제조기업의 리쇼어링 현황과 일본 정부의 기업 유치 지원제도
한광희(Kwang-Hee Han) 한일경상학회 2023 韓日經商論集 Vol.98 No.-
Purpose: This study examines the current situation and characteristics of reshoring, manufacturers return to Japan from their production bases that have been relocated abroad amid increased instability in the global supply chain due to factors such as COVID-19 and Russia’s invasion of Ukraine. This study tried to figure out what kind of reshoring business attraction support policies are being deployed by the central government or local governments in Japan. Also the author tried to derive what implications these support policies have for Korea. Research design, data, and methodology: This study collects and analyzes the contents of previous research papers related to the Japanese government’s support system for attracting reshoring companies, statistical data from research institutes, press releases from media companies, and homepages of local governments regarding reshoring of Japanese manufacturing companies. Results: The Japanese government has executed various support policies at the central and local governments level to turn reshoring manufacturing companies into opportunities to contribute to the country’s economic regeneration and local growth, resulting in more than 500 companies returning to Japan annually in recent years. These results had the effect of creating new jobs in various parts of Japan, and the increase in local governments’ tax revenues led to the revitalization of the local economy. Implications: In order to induce a successful return to Korea for manufacturers wishing to reshor, policies that can provide unconventional incentives such as smart factory construction, R&D support, and corporate tax cuts for reshoring companies should be reviewed and prepared.
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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.
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한광희(Han, Kwang-Hee),박재현(Park, Jae-Hyun),장수은(Chang, Justin S.),김영주(Kim, Young-Joo) 한양대학교 관광연구소 2016 觀光硏究論叢 Vol.28 No.4
우리나라는 1980년대 이후 월드컵, 아시안게임, 국제엑스포 등 메가이벤트를 빈번하게 개최하고 있다. 첨두시간대에 인파가 대거 몰리는 메가이벤트의 교통처리 대책으로, 최근에는 행사장 주변에 승용차 통행을 제한하고, 외곽의 교통결절점에서 무료 셔틀버스 등 대체 교통수단을 통해 관람객들을 행사장까지 수송하는 방식을 추진하고 있다. 하지만 적정 기준의 부재로 인한 비효율적 공급으로, 관람객들의 불편과 민원 발생, 불필요한 재원 낭비 등 문제가 발생하고 있다. 본 연구는 메가이벤트 관람을 목적으로 일시적으로 발생하는 여가수요에 대해, 대체 교통수단 투입 등 교통처리대책 수립 시 기회비용의 관점에서 공급 수준을 결정하기 위한 방편으로서, 메가이벤트 여가통행의 적정 시간가치를 산정하였다. 2015년 개최된 광주 하계유니버시아드 대회를 사례로 관람객 대면조사를 통해 SP조사를 실시하였으며, 로짓모형을 적용하여 통행시간을 산정하고 통계학적 검증을 수행하였다. 분석결과, 이벤트 첨두 시간대(폐막식 종료 직후) 대중교통 이용자의 통행시간 가치는 3,603원/시간/인으로 추산되었다. 이는 업무통행 시간가치(15,918원/시간/인) 보다는 낮지만, 장거리 여행, 쇼핑, 친지 방문 등을 포함한 일반적 비업무통행 시간가치(3,041원/시간/인) 보다는 높은 것으로 나타났다. 본 연구의 결과는 메가이벤트 조직위원회 등 운영자 입장에서, 경제적 측면에서 실효성이 확보된 대체 교통수단 공급정책을 수립하는데 활용할 수 있다. Mega-event is an official function held irregularly (occasionally regularly) on a large scale, such as the 2002 World Cup, Expo 2012 Yeosu, 2014 Incheon Asian Game, etc. These mega-events attract participants and spectators everywhere, resulting in high concentration of traffic around the venue and the nearby areas. Event organizers make efforts to mitigate traffic congestion by providing various means of transport service. In that, it is meaningful to develop a tool to make a decision to provide an appropriate level of transport service for the event. Thus, as the basic indicator of the opportunity cost approach, this paper estimates monetary value of the travel time of spectators in the event peak times. A discrete choice model is applied to the analyses along with an SP data from the interviews of 313 visitors in the 2015 Gwangju Universiade. It reveals that the value of travel time of public transit (bus) users at the event peak time is 3,603 won per hour per person, which is lower than that of the average business trips of 15,918 won but is higher than the average non-business trips of 3,041 won.
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한광희(Kwang - Hee, Han),김광희(Kwang - Hee, Kim) 한국경영사학회 2006 經營史學 Vol.41 No.-
The scale of GDP of Korea (2004) was 680. 1 billion dollars and Korea is the 11th largest economic country and the export scale marked 253.8 biJlion dollars in 2004 raising Korea up to the 12th largest exporting country, But in the back of 5uch legendary economic success, the structural problems of dependancy Japan of com loents and materials ar S니bsequent chronic trade deficit are latent This sty analyzed the changes of the dependency Japan and competitiveness against Japan focusing domestic auto parts industry to grasp the source of uch problems 50, the analysis of dependency Japan of gear box that is the core component and it’s simulation was paralleled The resu1t indicates that although the autornobile industry is continuously growing in volume and external shape, the reality of auto parts ìndustry ìs that the dep endency on J apan is high and competitiveness index is low. The competitiveness of highly functional core components against J apan is absuty inferior well verifying that the capacity to develop and produce high added value core component is still Însufficient lerefore , the multi angled strategy to co with and prescription shall be urgently prepared by private compa미 es, government and scientific corrununity to develop high added value core components
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