3대에 걸쳐서 나타난 선천성 백내장

최광훈,한경숙 한림대학교의료원 1981 人間科學 Vol.5 No.11

Gd₂O₃doped CeO₂에서의 Al₂O₃ 및 Ga₂O₃의 고용도한

최광훈,이주신 경성대학교 공학기술연구소 2002 공학기술연구지 Vol.9 No.-

The solid solubility limits of Al_2O_3 and Ga_2O_3 in Gd_2O_3 doped CeO_2 were determined by X-ray diffraction and scanning electron microscope measurements. The solubility limit of Al_2O_3 in Gd_2O_3 doped CeO_2 was found to be 2 mol%, and Ga_2O_3 was found to be 5 mol%. It is expected that the determination of the solid solubility limits will give an important information in a study on the promotion of the sintering properties with sintering aids addition.

Ce_0.8Gd_0.2O_1.9 세라믹스의 소결거동과 전기적 특성에 미치는 Fe₂O₃의 첨가효과

최광훈,이주신,최용규,Choi, Kwang-Hoon,Lee, Joo-Sin,Choi, Yong-Gyu 한국재료학회 2007 한국재료학회지 Vol.17 No.10

The sintering behavior and electrical property of $Ce_{0.8}Gd_{0.2}O_{1.9}$ ceramics were investigated with the iron oxide concentration ranging from 0 to 5 mol%. Both the sintered density and grain size were found to increase up to 2 mol% $Fe_2O_3$, and then to decrease with further additions. At a higher $Fe_2O_3$ content above 3 mol%, grain size decreased by a pinning effect induced by different shape grains. The electrical conductivity was also increased with increasing $Fe_2O_3$ content up to 2 mol%. Total conductivity of 2 mol% $Fe_2O_3-added$ specimen showed the maximum conductivity of $2{\times}10^{-2}{\Omega}{\cdot}cm^{-1}$ at $500^{\circ}C$. The addition of $Fe_2O_3$ was found to promote the sintering properties and electrical conductivities of $Gd_2O_3-dope\;CeO_2$.

중저층 RC건물의 내진진단 및 보강에 관한 연구 : 일본 오이타현 건축물 사례

최광훈,이지희,홍원화 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.1

The old buildings constructed before 1981, when a the earthquake-proof design law the been established were severely demaged due to the strong earthquake broke out in Hansin and Awa In this reason, the earthquake resistance of the existing disqualified buildings has been an issue. Moreover, the earthquake resistance of these buildings have been deteriorated. because of old age, environmental changes, enlargement and rebuilding. Therefore the earthquake-proof diagnosis and reinforcement of tile existing become important. In this paper, we demonstrate a three-stage diagnosis of a building and the reinforcement plan based on the result.

브랜드 디자인의 시각적인 표현 요소에 관한 연구 : 영캐주얼 제품의 브랜드를 중심으로

최광훈 한국패키지디자인학회 2002 상품문화디자인학연구 Vol.11 No.-

Design can be said to be a kind of a language system. it is a basic form of a language that enables us to communicate thoughts and ideas to others before words can be formed to express them for talking and writing. Visual design may be a creative activity expressed in graphics aimed for human communication to take place, and to have it accomplished through visual representation. Lately a new type of consumer group possessing diversified needs has emerged in a rapidly changing environment of the fashion market. Competition is made fierce among those in fashion business to meet such needs. Particularly a group of young generation is quite different from their predecessore, and has become a dominant player determining the market position. With enormous purchasing power they actually lead the medium-and-low-priced market segment for unisex casual-clothes for the uoung. As society became more sophisticated, people found more needs to satisfy. Since needs thend to createtheir own supply, a variety of products came flowing into the market to meet such needs, which are most of the cases a product of carefully planned design work with meticulous attention to detail. Each product has its own image that may vary depending on color, type of product and brand. A brand may be one of the most powerful factors affecting the image of a given product. There are tens of thousands of fashion brands for each type of fashion design. However, it is common to see quite a number of similar looking brands. This is probably because people have similar idea of beauty, and they are inclined to pursue a symbolic design that best fits the purpose. It is therefore very important how one hives unique features to a brand he or she is designing. And how is he or she adjusting the brands readability? Those are two of the most important questions to ask when establishing a brand design strategy in view of purchasing behavior of the new generation. Business firms contemplating a brand design should not forget the fact that this new generation is just too important to be neglected and that they are actually a dominant power leading a social change in our society. It may be the first on the priority list of the business firm's action plan to understand this powerful new generation, which actually led the consumption pattern and created a new pattern centered around styling, individuality, and diversity. Communicating information through a brand can be both effective and extensive as it passes information through visual representation, and would most likely play an important role as far as the market share is concerned. it may be important to invent a brand image for the medium-and low-priced casuals that appeals to the sensitivity of this consumer group of young generation

유해 사이트를 접속하는 안드로이드 앱을 문자열 분석으로 검사하는 시스템

최광훈,고광만,박희완,윤종희,Choi, Kwang-Hoon,Ko, Kwang-Man,Park, Hee-Wan,Youn, Jong-Hee 한국정보처리학회 2012 정보처리학회논문지 A Vol.19 No.4

안드로이드 기반 스마트폰 앱의 바이너리 코드를 오프라인 상에서 분석하여 유해 사이트 목록에 포함된 서버에 접속하는지 여부를 판단하는 시스템을 제안하고, 실제 앱에 대해 적용한 실험 결과를 제시한다. 주어진 앱의 바이너리 코드를 Java 바이트 코드로 역 컴파일하고, 문자열 분석을 적용하여 프로그램에서 사용하는 모든 문자열 집합을 계산한 다음, 유해 매체물을 제공하는 사이트 URL을 포함하는지 확인하는 방법이다. 이 시스템은 앱을 실행하지 않고 배포 단계에서 검사할 수 있고 앱 마켓 관리에서 유해 사이트를 접속하는 앱을 분류하는 작업을 자동화 할 수 있는 장점이 있다. DNS 서버를 이용하거나 스마트폰에 모니터링 모듈을 설치하여 차단하는 기존 방법들과 서로 다른 단계에서 유해 앱을 차단함으로써 상호 보완할 수 있는 방법이 될 수 있다. This paper proposes a string analysis based system for classifying Android Apps that may access so called harmful sites, and shows an experiment result for real Android apps on the market. The system first transforms Android App binary codes into Java byte codes, it performs string analysis to compute a set of strings at all program points, and it classifies the Android App as bad ones if the computed set contains URLs that are classified because the sites provide inappropriate contents. In the proposed approach, the system performs such a classification in the stage of distribution before installing and executing the Apps. Furthermore, the system is suitable for the automatic management of Android Apps in the market. The proposed system can be combined with the existing methods using DNS servers or monitoring modules to identify harmful Android apps better in different stages.

한국에서 자생하는 삼백초와 식물들의 항균력에 관한 연구

최광훈,권순자 慶熙大學校 1994 論文集 Vol.23 No.-

Antimicrobial acivity of the water extract of Saururus chinensis and Houttuynia cordata was compared with that of sythethic antibiotical such as ampicillin trihydrate, amoxicillin trihydrate and cefradin against several bacilli. While it was found that Saururus chinensis extract of 0.5 mg/ml had antimicrobial activity equal to 55% cefradin activity against Bacillus pumilus. 53% of ampicillin trihydrate activity against Bacillus subtilis and 60% cefradin activity against Alcaligenes feacalis. Houttuynia cordata extract of 0.1 mg/ml was found to have 60% ampicillin trihydrate activity and 80% amoxicillin trihydrate activity both against Bacillus pumilus, and 60 - 67% ampicillin trihydrate activity and 60 -67% cefradin activity both against Bacillus subtilis. In general it turned out that Houttuynia cordata extract had higher antimicrobial activity than Saururus chinensis extract.

Oxalate 공침법에 의한 Gd₂O₃Doped CeO₂의 미분말 합성 및 그 소결특성

최광훈,박성용,이주진 한국전기전자재료학회 2002 전기전자재료학회논문지 Vol.15 No.1

10mo1% Gd$_2$O$_3$ doped CeO$_2$ fine powders were synthesized by the oxalate coprecipitation method. The characteristics and sintering behavior of fine powders were investigated. The oxalate precipitates had the specific surface area of 150$m^2$/g, and appeared to be fine and spherical primary particles with a size of approximately 5.5nm. The decomposition of the precipitates occurred from a temperature around 30$0^{\circ}C$ and it was completed below 40$0^{\circ}C$, resulted in the formation of the oxide. The calcination temperature of the fine powders was suitable at 77$0^{\circ}C$. By introducing fine powders washed with alcohol and ball-milling process after calcination, the sintered body was possible to attain the value of 97% of the theoretical density at low temperature of 130$0^{\circ}C$</TEX.

국내 공동브랜드 쌀 포장디자인 활성화 방안 연구

최광훈 한국상품문화디자인학회 2004 상품문화디자인학연구 Vol.15 No.-

흡수식 냉온수기의 자동제어

최광훈,Choe, Gwang-Hun 한국설비기술협회 1994 설비 : 공조ㆍ냉동ㆍ위생 Vol.11 No.3