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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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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(Kwang Hee Han),정봉해(Bong Hea Chung) 한국체육교육학회 2000 한국체육교육학회지 Vol.5 No.1
The purpose of this study is to provide an effective teaching model based on the changes in affective psycho-motor domain of students by applying the sport education curriculum model. To achieve the purpose, the study selected 100 students from two 2nd year classes of Inchon Y girls` high school as the object of the study and split them into two groups and classified such as experimental & comparison group. As the investigation tool for affective domain, the attitude evaluation for affective domain by Korea Central Education Evaluation Institution(1984), Questionnaire for affective domain by Park Mi-young(1998) and the attitude investigation paper for the game by Kim Do-soo(1996) etc. were used after its revision and settlement. Sub-tests for the affective domain were successful serve times and pass times. As the procedure of the study, after pretest, sports education model to experimental group and general teaching model to comparison group were applied for 2 weeks. The data collected through pre & post test was treated statistically and it was compared and analyzed. Summary of the results are as follow. 1) A meaningful inter-group difference(p$lt;.01) was shown on basic attitude of affective domain. Through students` sport education model, they can understand the sport and participate in the class activities positively. Therefore, the motivating the students is decisive for effective learning. 2) In the psychological aspect of affective domain, a meaningful inter-group difference(p$lt;.01) was shown. Through the sport model, the student can enjoy the pleasure of games and they can participate in the class activities with new learning methods escaping from traditional routine methods. 3) In the social aspect of affective domain, a meaningful inter-group difference(p$lt;.01) was shown. This means that they can learn sound social attitudes such as team-work, collegue consciousness, fair spirit and deep understanding etc. through the sport model. 4) In the serve sub=test of psycho-motor domain, a meaningful intra-group difference was shown between pre&post investigation, but an inter-group difference was not shown. Therefore, there was no difference for the simple function training. 5) In pass sub-test of psycho-motor domain, a meaningful inter-group difference(p$lt;.01) was shown. In spite of no meaningful difference in the serve function, a considerable difference of 1.13 in the pass times was shown. This means that the coping function of the students with the dynamic game situation was improved considerably through the sport model.
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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(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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