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.

WROUGHT WIRE CLASP의 물리적 성질에 관한 실험적 연구

이광희,장익태,김광남,Lee, Kwang-Hee,Chang, Ik-Tae,Kim, Kwang-Nam 대한치과보철학회 1989 대한치과보철학회지 Vol.27 No.2

The purpose of this study was to evaluate the influence of attachment technique on mechanical properties and microstructures of wrought wires. The wires tested in this study were precious metal wires: PGP (Platinum-Gold -Palladium), Elastic #12, Denture Clasp, Standard, Jelenko No. 2, Degulor-Klammerdraht, DM (Dong Myung) and base metal wire : Ticonium. Each wire was divided into three groups, and each group was heat treated as embedding, cast to, and soldering state. Heat treated sample was evaluated by tensile test, bending test, microhardness test, element analysis and microstructure test. The obtained results were as follows: 1. In tensile test, cast to and soldering procedures have an effect on wrought wire clasp as hardening heat treatment. 2. Maximum bending strength was significantly increased in Elastic #12, Denture Clasp, Standard, and DM in cast to procedure. 3. Ticonium showed the highest Victors hardness number, followed by PGP, and there was no significant difference in other wrought wires. In cast to and soldering procedure, Victors hardness number was significantly increased in precious wrought wires. 4. The precious wrought wire showed typical fibrous structure and this was disappeared in cast to and soldering procedure. But physical properties were not influenced by this phenomenon.

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.

죄와 은혜: "권능과 영광"

이광희,Lee, Kwang-Hee 한국영어어문교육학회 2002 영어어문교육 Vol.7 No.2

The purpose of this article is to examine the relationship between sin and grace represented in The Power and the Glory. This work is composed of two thriller patterns of the pursuer and the pursed. The first pursuit is that the whisky priest, the representative of religious order is pursued by the lieutenant, the representative of secular order. And the second pursuit is that the whisky priest is trying to escape from God. In the course of his flight from God the whisky priest discovers his sinful nature and this self-recognition helps him restore his proper relationship with God. When he was a young priest he had religious piety, but he didn't feel true love for others. Ironically, after he is corrupted he finds his sinful nature and regrets his wrong behavior. He then comes to understand God's will and his responsibility to have love for the miserable human beings. The whisky priest is willing to accept his destiny as a martyr, after having repented his sins to God. Though the lieutenant captures the whisky priest and executes him, he doesn't feel triumph or hope but feels empty. The Power and the Glory shows us the irony that the lieutenant's power is a symbol of his weakness, while the priest's weakness is a symbol of his power.

레일레이 페이딩 환경하에서 적응형 변조기를 적용한 다중 반송파 CDMA 시스템의 성능 분석

이광희,김항래,한태영,김남,Lee, Kwang-Hee,Kim, Hang-Rae,Han, Tae-Young,Kim, Nam 한국전자파학회 2003 한국전자파학회논문지 Vol.14 No.12

본 논문은 레일레이 페이딩 채널 환경하에서, 적응형 변조기와 적응형 부채널 할당 방식을 적용한 다중 반송파 CDMA 시스템의 성능을 분석한다. 제안한 적응형 변조기는 QPSK, 16 QAM, 64 QAM, 256 QAM으로 구성하고, 신호점은 그레이 코드(Gray Code)로 나타내며, 임계값은 비트 에러율(BER)이 1 %일 경우의 평균 Eb/No를 사용한다. 적응형 부채널 할당 방식을 적용한 다중 반송파 시스템은 사용자의 DS파형을 L개의 부채널 중 가장 큰 K개의 부 채널로 선택하여 전송한다. 제안한 시스템의 경우, 총 부 채널수가 4이고 이 가운데 두 개의 부 채널로 데이터를 전송한다면 각 채널의 임계값은 5.2 dB, 9 dB, 13.2 dB와 8.4 dB, 12.2 dB, 16.3 dB 나타났다. BER이 $10^{-3}$을 만족하는 평균 $E_{b/}$ $N_{o}$ 는 8.1 dB로 기존의 시스템에 비해 12.9 dB의 성능이 개선되었다. 평균 심볼당 비트수(BPS)는 7 bit의 경우 15 dB의 평균 $E_{b/}$ $N_{o}$ 가 필요하다. 부 채널 에러가 발생한다면 BER이 $10^{-3}$을 만족하는 평균 $E_{b/}$ $N_{o}$ 는 13.6 dB로 5.5 dB의 성능 저하가 일어났다. 일어났다. In this paper, the performance of a multicarrier CDMA system using adaptive modulation and adaptive subchannel allocation scheme is analyzed in Rayleigh fading channel. The proposed adaptive modulator consists of modulation schemes using QPSK 16 QAM, 64 QAM and 256 QAM and constellations are pointed by Gray code. In addition, the threshold of the analysis is average E$\_$b//N$\_$o/ when the BER is 1 %. In the multicarrier system with adaptive subchannel allocation scheme, each DS waveform of user is transmitted over the K subchannels with the biggest fading among L subchannels. In case of the proposed system, total 4 subchannels are used and data are transmitted over 2 subchannels with the biggest fading, which results in the threshold of each channels is 5.2 dB, 9 dB, 13.2 dB and 8.4 dB, 12.2 dB, 16.3 dB. In the case of proposed system, the BER of 10$\^$-3/ is satisfied if average E$\_$b//N$\_$o/ is 8.1 dB. This is increased performance of 12.9 dB in comparison with conventional system. The BPS according to average channel is needed average E$\_$b//N$\_$o/ of about 15 dB in 7 bit. In the case of subchannel error, the BER of 10$\^$-3/ is 13.6 dB and is declined about 5.5 dB.

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).

화성 수영리 유적 출토 수침목제유물의 과학적 분석 및 보존처리

이광희,오정은,김수철,Lee, Kwang-Hee,Oh, Jeong-Eun,Kim, Soo-Chul 한국문화재보존과학회 2021 보존과학회지 Vol.37 No.5

본 연구에서는 화성시 수영리 유적에서 출토된 수침목제유물 5점을 대상으로 당시 사용된 목제의 수종과 조성시기, 가공방법 등을 확인하고, 진공동결건조법을 적용한 보존처리를 통해 원형을 유지하고자 하고자 하였다. 대형 목제 2점은 느릅나무속과 뽕나무속으로 확인되었고, 소형 목제 3점은 전나무속 1점과 소나무류 2점으로 확인되었다. 유물의 조성시기를 확인하고자 목제유물에 대해 위글매치를 이용한 방사성탄소연대측정을 실시하여 BCE 8520-8490년 또는 BCE 8470-8290년의 신석기시대로 확인되었고, 동반출토 된 종자류도 동일시기로 확인되었다. 표면에 가공흔적이 다수 관찰되었으며, 뜯겨진 흔적과 찍은 흔적이 관찰되어 석기 자귀를 주로 이용하여 목제를 가공했던 것으로 판단하였다. 보존처리는 상온(15~25℃)에서 PEG #4000 10%부터 40% 농도까지 함침 후 진공동결건조 하였다. 하지만 유물의 표면 온도 상승에 따라선반 온도를 상승시키는 일반적인 스케줄을 적용하여, 두꺼운 일부 부분에서는 내부 수분이 완벽히 제거되지 않아 대형수침목제의 진공동결건조 스케줄 방법에 대한 추가 연구가 필요할 것으로 판단하였다. Five waterlogged wood artefacts were excavated from Suyeong-ri site in Hwaseong, South Korea. The aim of the present study was to identify the species and estimate the date of manufacture and the manufacturing method of these artefacts. The study also aimed to conserve the original shapes of waterlogged wood artefacts by using the vacuum freeze drying method. The two large waterlogged woods were identified as Ulmus spp. and Morus spp., whereas one of the three small waterlogged woods was identified as Abies spp. and the other two as hard pine. Radiocarbon dating using wiggle match dated the manufacturing of these wooden artefacts between BCE 8520-8490 or BCE 8470-8290 in the Neolithic age, and a similar period was also confirmed for seed excavated from a place close to the location where the waterlogged wood artefacts were excavated. The surface of waterlogged wood artefacts had several traces of manufacturing processes - traces of tearing and chopping - were observed. Based on these observations, it was confirmed that stone adz was used to make these wooden artefacts. Thereafter, the waterlogged wood samples were conserved by immersing them into PEG#4,000 of concentration in water from 10% to 40% at room temperature(15~25℃) and subjecting them to vacuum freeze drying. However, the internal moisture was not completely removed in some thick parts of waterlogged woods by applying the general schedule such as raising the shelf temperature as the surface temperature rises. Therefore, additional study is required using the schedule-method for vacuum freeze drying of large waterlogged wood.

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.

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