Pitch Detector Comparison by the Errors and the Speakers Evaluation

You,Kwang Bok유광복Lee,Kwang Hyung이광형 崇實大學校 大學院 1987 崇實大學校 大學院 論文集 Vol.5 No.-

고등학교 야영활동 참여가 인성발달에 미치는 영향

노형철(Hyung Chul Roh),정명수(Myeong Soo Jung),정순승(Soon Seung Jung),이광호(Kwang Ho Lee) 한국사회체육학회 2000 한국사회체육학회지 Vol.13 No.-

Camping activities were thought as one of educational methods. This study analyzed effects of participation in camping activities on high school students` humanity development variables, which affect humanity development were used for this study and data were collected at high schools in Kwang-ju city. At this site 600 surveys were distributed to a random sample of 300 participant and 30 non participant in camping activities. The results were as follows. 1. Participation in camping activities more positively affected humanity developments of male students` than that of female students`. 2. There was significant relationship between camping activities and sociality, leadership, activity and responsibility development. 3. There is no relationship between frequency of participation in camping activities and humanity development. Since the data were collected only at high schools in Kwang-ju city, further studies on high schools in countrysides would be required.

不連續 Fuchsian 群과 解析函數의 零點에 관한 考察

李光衡 건국대학교 1976 論文集 Vol.3 No.1

캔음료중 epichlorohydrin 의분석법에 관한 연구

이광호,곽인신,최재천,전대훈,김형일,강경모,최병희,김귀정,이철원 식품의약품안전청 2001 식품의약품안전청 연보 Vol.5 No.-

캔식품중에 잔류하는 epichlorohydrin을 분석하기 위한 pu링e & trap-Cc/uf통D 분석법을 확립하여 캔의 lacauer 코팅제에서 식품으로 이행되어 잔류하는 epichtorohydfn을 측정하고, 식품유사용매에 의한 용출시험을 통해 일일추정섭취량을 산출하였다. epichlorohydrin의 검량선은 y=0.0006x+0.OO6?(R큰0.9983)의 직선성·라 0.05#ga의 검출한계를 나타내었다. 각종 음료 및 식품유사용매에 일정량의 epichlorohydrin을 첨가한 후 분석하였을 때 회수을은 72~91%였으며, 실제 시판되는 f5건의 캔음료 중 잔류하는 epichlorohydrin을 측정한 결과 모든 캔음료에서 검출한계(0.1#94) 이하였다. 제관업체에서 구입한 modifed epoxy, epoxy phenolic, vinyl organosol, epoxy phenol ester 등의 BADGE(bisphenol A diglycidyt ether)형 에폭시수지로 lacquer 코팅된 식품용 캔에 식품윤사용매인 10% 또는 95% 에탄올을 층L진한 후 90~121'c의 드라이오븐에서 30분~2시간동안 용출시켰을 패 캔의 lacquer 코팅재에서 식품유사용매로 이행되는 epichBorollydirn은 코팅재질, 그리고 가열온도 및 시간에 문관하게 모든 캔에서 검출한계(0.4#ga)이하 였다. 위의 용출결과를 FD.f_의 "Recommendation for Chemistry Data for Indirect Food Additive Petition" 윽 일일추정섭취량 산출법에 적용하여 얻은 epichtorohydrin의 일딜추정 섭 취 량은 0.2r조persorday이하였다. A sensitive ana1?~7tical method based on gas cl)romatogFapy~mass spectrometry with a selected ion monitoring (GE/hfS-Slhf) and the purge-and-trap concentrator ))·asdeveloped for determining ot'epicillorohydrin in canr;ed be)#erages coated with eporl· resin. Thecalibration rurve in the ranre of 0.j ~50nr had'correlation coefficient of 0.9983 and detection limit of 0.Osrga. Recoveries of epichlorohydrin spiked to beverages were in the range of 72 ~91% with detection limits of 0.1 #ga. fn survey of epichlorohydff in twenty commercialcanned beverage samples, epichlorohydrin was not found in all the samples with the detectionlimit of 0.1 r9a. In migration test of various cans coated with BADGE-based coating cans;modifed epoxy, epoxy phenolic, vinyl organosol, epox?· phenol ester were exposed to the foodsimulants of 10% ethanol and 95% ethanol. flfo delectable epichlorohydrin migrated to foodsiHulants was found in aTl the cars with detection Jimit of 0.4 #9/L. Using the miEration data,along uTith the applicstion of food and beverage cans complied with FDA's "Recommendationfor Chemlstry Data f,3r Indirect Food Additive Petition" , the potential dietary exposure toepichlorohydrin was estlmated to be under 0.2rf/person/day.

공유-메모리 시스템상에서 데이터 지역성을 유지하기 위한 스케쥴링 기법

이광형 東西大學校 1997 동서논문집 Vol.3 No.1

In most application programs, loops usually comprise most of the computation in a program and are the most important source of parallelism. When scheduling the loop on the processors of shared-memory multiprocessor system with the goal of minimizing the total execution time, the strategy for scheduling should be designed to distribute equitably the computational load among the processor and it must minimize the average memory delay by considering the locality of data. If the required data is non-local to the processors, it causes data movement to transfer between the processors. The time spent bring data into the local memory is a significant source of overhead, ranging between 30%∼60% of the total execution time, and it affects tremendously to the capacity of parallel processing systems. When the pre-existing scheduling strategies are applying to a loop with the dependence of variable distance, it causes unnecessary data movement between processors because of non-locality scheduling. I propose a new scheduling scheme, LSDC which is considering the data locality and have analyzed the algorithm through simulation. The LSDC constructs dependence-pair of data at compile time so that it can remove the scheduling overhead during execution time. It also can minimize data transfer between processors by assigning dependence-pair unit to the same processor. For resolving the problem of load unbalanced happening during execution time, it re-assigns dynamically. In that case, it also assigns per dependence-pair unit.

이중중합 치면열구 전색제와 광중합 치면열구 전색제의 미세경도에 관한 비교연구

이광수,김형두,이상훈 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.4

Due to the various reason, sealing of pit & fissure might be imperfect. One of these reason can be the fracture of sealant material because of the low hardness value of sealing material. The purpose of this in vitro study was to evaluate th microhardness of two different curing type pit and fissure sealants : Dual-cure and Light-cure. The result from the present study can be summarized as follows: 1. All pit and fissure sealants that used in this study showed statistically significant difference in their microhardness of upper and lower surface.(P<0.05). 2. Except of lower surface of teethmate, microhardness of 40-second curing sealant was statistically higher than that of 20-second curing sealant. (P<0.05). 3. In comparison of sealants, microhardness of dual-cure sealant was statistically higher than that of light-cure sealant. Above results suggest that the use of dual-cure sealant and longer curing time are recommended.

자속횡방향형 클로폴 리니어 스테핑 모터의 개발

이봉섭,진광윤,오홍석,김영흥 三陟大學校 2002 論文集 Vol.35 No.-

In this paper, the new transverse flux machine type claw pole linear stepping motor(TFM_CPLSM) is proposed. And the magnetic equivalent circuit of TFM_ CPLSM is derived by the structure of the TFM_CPLSM. The design parameter, the magnetic flux density and the static thrust force of TFM_CPLSM are Performed with three-dimensional finite element method.

소아치과환자의 우식활성검사로서 Cariostat 검사와 Alban 검사의 비교 연구

이광희,형광업 大韓小兒齒科學會 1990 大韓小兒齒科學會誌 Vol.17 No.2

Caries activity of ninety-nine pediatric dental patients were examined by two caries activity tests, Cariostat test and Alban test. Agar was not added to Alban test medium. All buccal cervical dental plaque was removed by a cotton applicator and then the latter was incubated in Cariostat test medium at 37。C for 48hrs. After incubation, the color of medium was recorded as O to 3 on the basis of whether the color was blue, green, yellow-green, or yellow. Small quantity of unstimulated saliva was flowed into Alban test medium and then it was incubated and recorded by same method. DT index, FT index, dt index, ft index, and DFdft index were used as caries experience. There was significant correlation between Cariostat test score and Alban test score(0.4036, P=0.000), between Cariostat test score and DFdft index(0.1983, P=0.025), and between Alban testscore and DFdft index(0.3004, P=0.001). Cariostat test score had significant correlation with ft index, and Alban test score had significant correlation with df index.

상완골 간부 골절 불유합의 금속판과 자가골 이식에 의한 치료 결과

이광현,이성필,김형종,이봉근,김주학 대한골절학회 2004 대한골절학회지 Vol.17 No.2

아동의 우식활성과 모친의 우식활성간의 상관성에 관한 연구

형광업,이광희 大韓小兒齒科學會 1991 大韓小兒齒科學會誌 Vol.18 No.2

The correlation of caries activity of 51 children with that of their mothods has been studied. The age distribution of children was from 3 to 13 years and the mean was 8.2 years. Caries activity was measured by caries experience, Cariostat test, and modified Alban test. Tooth brushing frequency, breast-fed period, and bottle-fed period were also investigated. Among the caries activity variables, there were significant correlations between Cariostat test score of children and that of mothers, between Cariostat test score of children and DT mothers, between DT of children and modified Alban test score mothers, and between DT of children and DT of mothers, Also there were significant correlations between toothbrushing frequency of children and that of mothers and between ft of children and bottlefed period. Caries activity of children had reverse correlation with age of mothers. These observations indicate that caries activity of mothers should be controlled first to control that of children.