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.

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.

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.

한국 학생층의 사회불안에 관한 연구

이시형,이추리,이성희,정광설,김갑중 高麗病院 1987 高醫 Vol.10 No.-

Peripheral, soft tissue odontoma에 관한 증례보고

이종갑,최병재,최형준,이광출 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.1

1. Peripheral odontoma는 매우 드문 질환으로 확진을 위해서는 생검이 필수적이다. 2. Peripheral odontoma는 치은의 종창을 동반하며 서서히 성장하는 임상적 특징을 가진다. 3. 골내 치아종과 마찬가지로 Peripheral odontoma의 치료로는 완전한 외과적 절제가 추천되고 예후 또한 양호하다. Odontomas, hamartomas of odontogenic origin, are composed of all the structures that make up teeth. The WHO distinguishes odontoma into two types. The complex odontoma is defined as "a malformation in which all the dental tissues are represented, individual tissues being mainly well-formed but occurring in a more or less disorderly pattern." The compound odontoma is defined as "a malformation in which all the dental tissues are represented in a more orderly pattern than in the complex odontoma, so, that the lesion consists of many toothlike structures. Most of these structures do not resemble morphologically the teeth of normal dentition, but in each one enamel, dentine, cementum, and pulp are arranged as in the normal tooth." Almost all odontomas are located intraosseously, but they have occasionally been reported in extrabony location. Peripheral or soft tissue odontomas, those arising outside of the alveolar bone, are very rare. Peripheral or soft tissue odontoma are defined as tumors that demonstrate the histologic characteristics of their intraosseous counterparts but occur solely in the soft tissue covering the toothbearing portion of the mandible and maxilla, When they mature, they appear as a radiopaque mass without the peripheral halo. The final diagnosis should be confirmed by biopsy. The origin of peripheral odontoma is probably related to remnants of the dental lamina in the gingiva. The treatment of choice is complete surgical excision, similarly to intraosseous odontoma and it does not tend to recur. This report presents a case of 5-year-old boy with swelling on labial gingiva of primary central incisor. And it was diagnosed as peripheral odontoma by excisional biopsy.

한국재벌의 비관련다각화 요인에 관한 자원적 접근

李光哲,金炯成 홍익대학교 경제연구소 1993 經濟硏究 Vol.9 No.-

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.

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.

Coevaporation에 의한 cd₁-xZn_(x)S 박막 제작 및 특성에 관한 연구

李載亨,李虎烈,朴鏞冠,申成浩,申載爀,朴光子 성균관대학교 1998 학술회의지원논문목록집 Vol.1998 No.-

In this paper, structural optical and electrical properties of Cd_(1-x)Zn_(x)S thin films prepared by coevaporation method were studied. Also, effects of ZnS mole ratio(x) to CdS on properties of thin film Cd_(1-x)Zn_(x)S/CdTe solar cells were investigated. When the ZnS mole ratio was less than 0.85, the crystal structure of Cd_(1-x)Zn_(x)S films was hexagonal with the c axis aligned perpendicular to the substrate. For x>0.85, however, the Cd_(1-x)Zn_(x)S films were grown with cubic zincblende structire. As the ZnS mole ratio increased the lattice constant of Cd_(1-x)Zn_(x)S films rapidly increased with ZnS mole ratio. The open circuit voltage of Cd₁xZnxS/CdTe solar cells increased with x due to reducing of the electron affinity difference between Cd₁xZnxS and CdTe films. However, the increase of series resistance due to the high resistivity of Cd_(1-x)Zn_(x)S films results on reducing conversion efficiency.