조직공정성과 조직시민행동의 관계에 있어서 상사-부하간 교환관계의 역할에 관한 연구

이광희,이병진,박동진,이영욱,Lee, Kwang-Hee,Lee, Byeong-Jin,Park, Dong-Jin,Lee, Young-Uk 대한산업경영학회 2010 산업융합연구 Vol.8 No.2

The purpose of this study is to examine the relationship between justice factors and organizational citizenship behavior through the role of leader-member exchange. It is expected that leader-member exchange was mediated on the relationship between justice factors and organizational citizenship behavior. According to this result. leader-member exchange mediate between justice factors and organizational citizenship behavior, also justice factors direct effected to organizational citizenship behavior. Resultingly organizational citizenship behavior effected on justice factors and leader-member exchange. And mediated effect of leader-member exchange was positively related to between justice factors and organizational citizenship behavior As a result, this study is to be more useful to manage employees in organization.

교정치료를 받는 어린이의 우식활성요인에 대한 연구

이광희,Lee, Kwang-Hee 대한소아치과학회 2002 大韓小兒齒科學會誌 Vol.29 No.4

교정치료를 받는 어린이들의 우식활성에 관여하는 요인들을 규명하고자, 고정성 및 가철성 교정장치를 구강에 장착하고 있는 어린이 50명을 대상으로 Cariostat 우식활성검사를 실시하고 우식활성요인으로서 성별, 연령, 교정장치 장착기간, 장치의 종류, 장치를 장착한 부위, Angle씨 부정교합 분류, 우식경험치 수 등의 요인을 조사하였다. 연구대상의 Cariostat 검사성적은 0점과 3점이 각각 1명(2%)씩 있었고 1점이 22명(44%), 2점이 26명(52%)이었다. 저우식활성군의 평균 연령은 9.96세 고우식활성군의 평균 연령은 11.56세로서 두 군간의 차이가 유의하였다(P<0.01). 구강내 교정장치 장착기간은 저우식활성군이 16.13개월, 고우식활성군이 20.48개월로서 고우식활성군의 장착기간이 길었으나 유의한 차이는 없었다(P>0.05). 가철성 장치만 장착한 경우에 비해 고정성 장치를 장착한 경우에서 우식활성이 더 높았다(P<0.01). 상악에만 장착한 경우에 비해 상악과 하악에 다 장착한 경우에서 우식활성이 더 높은 분포를 보였으나 통계학적 유의성은 없었다(P>0.05). Angle씨 I 급 부정교합의 경우에 우식활성이 높고 III 급 부정교합의 경우에 우식활성이 낮은 분포를 보였으나 통계학적 유의성은 없었다(P>0.05). 우식경험치 수는 저우식활성군이 1.83개, 고우식활성군이 1.41개이었으나 유의한 차이는 아니었고(P>0.05) 전체 평균은 1.60개이었다. The purpose of study was to investigate the caries activity factors of children during orthodontic treatment. Fifty children with fixed or removable intraoral orthodontic appliances were examined for their Cariostat caries activity test scores, gender, age, duration of treatment, appliance type, treatment site, Angle's classification of malocclusion, and the number of teeth with caries experience. The mean age of the high caries activity group was significantly higher than that of the low caries activity group(P<0.01). The duration of treatment of the high caries activity group was longer than that of the low caries activity group, but the difference was not significant(P>0.05). The fixed appliance group showed higher caries activity than the removable appliance group(P<0.01). The caries activity of Angle Class III group was lower than that of Angle Class I group, not significant statistically(P>0.05). The number of teeth with caries experience in the high caries activity group was lower than that in the low caries activity group, not significant statistically(P>0.05).

치과위생사 업무실태와 의식구조 조사연구

이광희,김종배 ( Kwang Hee Lee,Johng Bai Kim ) 대한예방치과·구강보건학회 1980 大韓口腔保健學會誌 Vol.5 No.1

다중 상태 소나의 최적 수신망 배치

이광희,한동석,Lee, Kwang-Hee,Han, Dong-Seog 한국군사과학기술학회 2012 한국군사과학기술학회지 Vol.15 No.5

It is very important to place receiver in multistatic sonar. Inefficient placement of the receiver reduce detection probability and to increase the probability of detection should be used more receivers. Therefore, detection of targets in searching area, detection performance of limited receiver depends on how to place. Through the optimized receiver placement, detection area between each sonar as much as possible avoid duplication, as optimization, the minimum receiver can be maintained detection performance. In this paper we prove mathematical verification of maximum signal excess value based on sonar placement and we calculate a signal excess value by using computer simulations and suggest optimal sonar placement.

10대 ( 代 ) 학색의 섭식실태 조사 연구

이광희,김종배 ( Kwang Hee Lee,Johng Bai Kim ) 대한예방치과·구강보건학회 1984 大韓口腔保健學會誌 Vol.8 No.1

딸기 ${\beta}$-Galactosidase의 정제 및 생화학적 특성

이광희,윤경영,김광수,김남우,신승렬,Lee, Kwang-Hee,Yoon, Kyung-Young,Kim, Kwang-Soo,Kim, Nam-Woo,Shin, Seung-Ryeul 한국식품저장유통학회 2000 한국식품저장유통학회지 Vol.7 No.2

${\beta}$-Galactosidase was extracted and purified from strawberry. The purified ${\beta}$-Galactosidase from strawberry was investigated their physicochemical characteristics. ${\beta}$-Galactosidase was purified 25.74 fold from strawberry. The purification procedure include ammonium sulfate fraction, acetone powder treatment and gel and ion exchange chromatography. Yield of the enzyme purification was 18.11%. The purified enzyme has native molecular weight of 116,000 dalton. Vmax value and Km value of ${\beta}$-Galactosidase were 0.077 mM ONPG/ml/15mim and 1.75x10-2mM, respectively. The optimum temperature and pH of ${\beta}$-Galactosidase were 43$^{\circ}$C and pH 4.0, respectively. The ${\beta}$-Galactosidase activity was stable below 50$^{\circ}$C and at pH 4.0 to pH 6.0. Among the metal ions Ca and Mg were did not affect, whereas K, Cu and Zn show a little effect on the enzyme activity. The ${\beta}$-Galactosidase activities were inhibited by treatment with EDTA and SDS.

유리단 국소의치의 기능 인상에 의한 연조직의 수직적 변위량에 관한 연구

이광희,장익태,Lee, Kwang-Hee,Chang, IK-Tai 대한치과보철학회 1983 대한치과보철학회지 Vol.21 No.1

Distal extension partial dentures are supported by both the relatively rigid teeth and the resilient mucosa. So impression techniques of residual alveolar ridge in case of distal extension partial denture have particular importance in order to broad distribution of the masticatory force. McLean recognized the need for recording the tissues supporting distal extension partial denture base in functional form to equalize the resilient and non-resilient support, and this was called functional impression. Many investigators proposed various techniques of the functional impression for a distal extension partial denture, but only a little studies were performed about displacement of soft tissue under distal extension partial denture base. The purpose of this study is to investigate the amount of vertical displacement of the soft tissue under distal extension partial denture base by different functional impression techniques. Impression techniques used were Z.O.P. Impression, Selective Tissue Placement Impression, Functional Relining Impression. Measurement of the vertical displacement of soft tissue were made with Depth Gauge and Measuring Platform. A Anatomic Impression was used as a control. The results were tested statistically using 3 way ANOVA and Scheffe test. The followings were the results obtained from this study. 1. The greatest amount of soft tissue displacement was observed in the center of the retromolar pad. 2. No significant differences were found between the crest of alveolar ridge and the buccal shelf area. 3. The greatest soft tissue displacement was observed in Functional Relining Impression using Iowa wax, and the least displacement was observed in Selective Tissue Placement Impression using murcaptan rubber base. 4. No significant differences were found between finger pressure and biting pressure in Z.O.P. Impression, but greater displacement was observed by biting pressure than finger pressure in Functional Reling Impression.

정보통신분야의 기술경제성 연구

이광희,서승우,박광만,Lee, Kwang-Hee,Seo, Seung-Woo,Park, Gwang-Man 대한산업공학회 1996 산업공학 Vol.9 No.3

Competition in telecommunications field brings about change in attitudes toward technology development. It is no longer the case that technology development itself has merits but that technology development should be considered in terms of its economic concepts such as the cost-effectiveness concept. Techno-Economic study intend to incorporate the idea of economic efficiency into technology development and management so that economic potential of technologies is maximized. This paper categorizes the contents of techno-economic study in telecommunications and information technologies and suggests a framework of techno-economic study based on technology lifecycle and decision makers.

대학 정문 진입부 재구성을 통한 캠퍼스 환경개선에 관한 연구 -경남 소재 U대학의 주차 및 복합시설 구성을 중심으로-

이광희,Lee, Kwang-Hee 한국교육녹색환경연구원 2011 교육·녹색환경연구 Vol.10 No.1

In order to solve the current shortage of parking spaces, and redesign the main gate area of the U University, the research investigated some cases of other schools located in Seoul which actively constructed multi-purpose building structures. Those schools are considered to be good samples showing their efforts to fulfill the needs of more parking spaces in their campuses, and to cover with the growing needs of multi-functioned facilities accommodating services of academic affairs, reading room spaces, and amenities. With the investigation, the research finded out the current trends of campus developments from the sample schools, such as underground parking facilities connected with multi-purpose buildings along the main arteries of campuses. Following the trends the research thoroughly examined the present conditions of our school and tried to make some possible alternatives for the facilities. Under the conditions, the research suggested 1)to construct underground parking lots accepting around 1,000 cars under the ivory tower square located in front of University Administration Building, 2)to develop a big-scaled open square at the university main gate, and 3)to build a multi-purpose structure along the main street of the campus, which included administration services, studying spaces, and some commercial facilities.

이산화탄소 레이저의 유치 탈회억제 및 재경화 효과

이광희,Lee, Kwang-Hee 대한소아치과학회 2003 大韓小兒齒科學會誌 Vol.30 No.2

이산화탄소 레이저의 출력과 조사시간에 따른 유치 법랑질의 탈회억제 및 재경화 효과를 알아보고자 하였다. 유치 법랑질의 직경 2mm 부위를, 파장 $10.6{\mu}m$ 탈촛점 펄스파 이산화탄소 레이저로 6W 2초 및 3W 8초 조사하고, Diagnodent로 측정하여 탈회억제 및 재경화 효과를 평가하고, 선행 연구의 3W 4초 및 6W 4초 조사 결과와 함께 4개군을 비교하였다. 유치 법랑질을 6W 2초 또는 3W 8초 조사 후 탈회시켰을 때, 조사 전과 조사 후에 비해 탈회 후 측정치가 유의하게 증가하였으며(P<0.05), 군 간에 유의한 차이가 없었다. 4개 군 중 6W 4초 군에서 뚜렷한 탈회억제효과가 있었다. 탈회된 유치 법랑질을 6W 2초 또는 3W 8초 조사하였을 때, 탈회 후에 비해 조사 후 측정치가 유의하게 감소하였으나 탈회 전보다는 유의하게 증가하였고(P<0.05), 군 간에 유의한 차이가 없었다. 4개 군 중 6W 4초 군이 거의 완전한 재경화효과가 있었고, 세 군은 부분적 재경화효과가 있었으며 서로 유의한 차이가 없었다. 치아변색은 6W 4초 조사한 경우에만 나타났다. 우식 억제와 치아변색은 총 조사 에너지보다 출력에 더 의존한다고 사료되었다. The purpose of study was to investigate the effect of carbon dioxide laser on demineralization inhibition and rehardening of primary tooth enamel according to its power and irradiation time. 2mm diameter circle on the primary enamel surface was irradiated by defocused $10.6{\mu}m$ superpulse carbon dioxide laser at 6 Watt 2 seconds or at 3 Watt 8 seconds, before or after demineralization by Coca-Cola for 24 hours. Enamel surface change was measured by the Diagnodent. The results were analyzed with the former study results of 3 Watt 4 seconds and 6 Watt and 4 seconds. Diagnodent scores increased significantly after demineralization of irradiated enamel at 6W 2s or 3W 8s (P<0.05). Among the four groups, only 6W 4s group showed obvious demineralization inhibition effect. Diagnodent scores reduced significantly after 6W 2s or 3W 8s irradiation of demineralized enamel(P<0.05). Among the four groups, 6W 4s showed nearly complete rehardening effect, and the other groups showed partial effect. Tooth discoloration only occurred at 6W 4s. It seemed that caries inhibition and tooth discoloration depend on laser power more than total irradiation energy.