구개 저작 점막의 두께에 대한 연구

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.

연구논문 - 생물 / 환경 : 중공사 한외여과를 이용한 계면활성제의 분리특성

한광희,김영호,양현수 ( Kwang Hee Han,Young Ho Kim,Hyen Soo Yang ) 한국공업화학회 1995 한국공업화학회 연구논문 초록집 Vol.1994 No.1

연구논문 - 생물 / 환경 : 계면활성제를 이용한 중공사막에서의 중금속 제거

한광희,양현수 ( Kwang Hee Han,Hyun Soo Yang ) 한국공업화학회 1995 한국공업화학회 연구논문 초록집 Vol.1990 No.3

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.

가상화 기술을 이용한 계정 관리 시스템

한광희(Kwang- hee Han),김명호(Meung- ho Kim) 한국정보과학회 2009 한국정보과학회 학술발표논문집 Vol.36 No.2D

현재 인터넷은 다양한 서비스를 제공하고, 사용자는 그 서비스들을 받기 위해 많은 사이트에 가입을 한다. 그로 인해 관리해야 할 ID가 많아지고, 동일한 패스워드의 반복적 사용으로 인한 안전성 저하와 분산된 개인 정보의 유출에 대한 걱정이 이전에 비해 크게 늘고 있다. 실제로 인터넷의 활용이 더 커지면서 이것을 악용한 피싱, 파밍 공격들이 쉬워지게 됨으로 크고 작은 피해들이 빈번하게 일어나고 있다. 따라서 사용자를 인증하고, 사용자의 ID 및 개인 정보를 관리해주는 ID 관리 시스템이 중요해졌다. 그러나 기존 ID 관리 시스템에는 해킹 공격의 80%를 차지하는 내부자에 의한 공격과 외부 공격으로 인한 개인 정보 유출 및 2차 피해, 보안과 편리성의 Trade-off 관계라는 문제들이 있다. 가상화를 이용하여 논리적으로 로그인 서버와 인증 서버를 분리시킴으로써 안전한 ID 관리를 제안한다. 제안 시스템은 가상화 기술을 이용하였기에 문제점 해결과 그로 인한 비용 절감과 효율성의 이점을 가진다.

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.

비내진 상세를 갖는 철근콘크리트 기둥을 위한 가벼운 전단보강

한광희(Han, Kwang Hee),엄태성(Eom, Tae Sung),이상현(Lee, Sang Hyun) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.1

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.

스포츠교육모형을 통한 배구 수업의 효율적 학습지도

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.

대뇌반구간 한글 단어처리와 색채처리 특성

한광희(Kwang Hee Han),감기택(Keetaek Kham) 한국정보과학회 언어공학연구회 1994 한국정보과학회 언어공학연구회 학술발표 논문집 Vol.1994 No.10