Angle 氏 Ⅲ級 不正交合의 治驗一例

成在鉉(Jae-Hyun Sung),權五源(Oh-Won Kwon) 대한치과교정학회 1981 대한치과교정학회지 Vol.11 No.1

A girl aged 18 years and 1 month, had a Angle`s Class Iff malocclusion, characterized by anterior crossbite, anterior crowding, and constriction from right lower 2nd p emolar to right lower 2nd molar This ~i5 5s patient underwent scaling and 84148 extraction, and multibanded system was placed. After 14 months, anterior crossbite and crowding was corrected, andbothdental arches were improved. After 6 months from debanding, band space disappeared,, and any relapse was not detected.

재구성가능 연산증폭기를 사용한 저전력 4차 델타-시그마 변조기 설계

성재현(Jae-Hyeon Sung),이동현(Dong-Hyun Lee),윤광섭(Kwang Sub Yoon) 대한전자공학회 2017 전자공학회논문지 Vol.54 No.5

본 논문에서는 생체 신호 처리를 위한 12비트 이상의 고 해상도를 갖는 저 전력 CMOS 4차 델타-시그마 변조기를 설계하였다. 제안하는 4차 델타-시그마 변조기는 시간 분할 기법을 이용하여 회로를 시간에 따라 재구성해 4개의 연산증폭기가 필요한 회로를 1개의 연산증폭기만으로 구동 시켰다. 이를 통하여 일반적인 구조보다 전력소모를 75% 감소시킬 수 있다. 또한 kT/C 잡음과 칩 면적을 고려하여 변조기의 입력단과 출력 단의 커패시터들을 안정적으로 구동하기 위하여 적분기내 가변되는 증폭기를 설계하였다. 첫 번째와 두 번째 클럭 위상에서는 2단 연산 증폭기가 동작하고, 세 번째와 네 번째 위상에서는 1단 연산 증폭기가 동작한다. 이로 인하여 두 가지 위상 조건에서 연산증폭기의 위상여유가 60~90도 이내에 존재하게 하므로서 변조기의 안정성을 크게 향상시켰다. 제안한 변조기는 0.18μm CMOS N-well 1 poly 6 metal 공정을 이용하여 제작되었으며, 1.8V의 공급전압에서 354μW의 전력소모가 측정되었다. 256kHz의 동작주파수, 128배의 오버샘플링 비율 조건에서 250Hz의 입력 신호를 인가하였을 때, 최대 SNDR은 72.8dB, ENOB은 11.8 비트로 측정되었다. 또한 종합 성능 평가지수인 FOM(Walden)은 49.6pJ/step, FOM(Schreier)는 154.5dB로 측정되었다. In this paper, a low power 4th order delta-sigma modulator was designed with a high resolution of 12 bits or more for the biological signal processing. Using time-interleaving technique, 4th order delta-sigma modulator was designed with one operational amplifier. So power consumption can be reduced to 1/4 than a conventional structure. To operate stably in the big difference between the two capacitor for kT/C noise and chip size, the variable-stage amplifier was designed. In the first phase and second phase, the operational amplifier is operating in a 2-stage. In the third and fourth phase, the operational amplifier is operating in a 1-stage. This was significantly improved the stability of the modulator because the phase margin exists within 60~90deg. The proposed delta-sigma modulator is designed in a standard 0.18μm CMOS n-well 1 poly 6 Metal technology and dissipates the power of 354μW with supply voltage of 1.8V. The ENOB of 11.8bit and SNDR of 72.8dB at 250Hz input frequency and 256kHz sampling frequency. From measurement results FOM1 is calculated to 49.6pJ/step and FOM2 is calculated to 154.5dB.

영화 공간 사운드 제작연구

성재현(Sung, Jae-Hyun),이민아(Lee, Min-Ah) 한국영화학회 2014 영화연구 Vol.0 No.61

Space in the film is expressed by a variety of different forms of meaning and furthermore space could be the reason in the presence of a work. space in the film plays a important roll of tasks in making up the area of the screen image and sound over the visual space through sound consists of auditory space. sound has its own screen composition techniques that generate an idea of adding space in space, as well as in the surrounded existing through amalgamate a foe space to a visual image. In production’s aspect, it is very important in sound configuration that an ambience of stems in term of expressing film sound, makes people to concentrate in storytelling. sound, the configuration of ambience is to relocate the two-dimensional space into the three dimensional space. this reproduces the overall expression of images and realistic nature. there are many kinds of sound system, however none of these are excludable. people may think all of these difference stem’s components are recognized through psycho-acoustic system. although an ambience gives understanding of psycho-acoustic system, people can be disturbed if a main idea of configuration is different from the image. Many scenes in the film make the decisions by using the continuity of sound. discontinuity of scenes often happens in low budget featured films, or student films due to the different size of pictures and disharmony of ambience. In order to have the power of persuasion in spatial sound in the film, it is important to acquire the audience’s perception by efficient operation system, arrangement and design. this study was designed to discuss the ambience in sound system. This paper is written to describe the sound system by stems. it will analyze theories specifically for ambience and detail relationship between visual and sound in the film 〈Gravity〉.despite to other movies,〈Gravity〉 has been praised for using whole new different realistic visual and sound effect that people have never experienced in the field of cinematic spacious and it received sound award and sound editing award in Academy Award 2013. 〈Gravity〉has contributed a lot in the field of ambience analysis and this paper will talk about the technical and artistic parts of the research and discussions in the special sound.

성장기아동의 반대교합치료에 관한 임상적 고찰

성재현(Jae-Hyun Sung) 대한치과교정학회 1982 대한치과교정학회지 Vol.12 No.2

The author evaluated the effect of chin cap for the growing patient with cross-bite. The date were obtainde from superimposition of per and post-treatment lateral cephaograms. The results might be as follows; 1. increase ANB angle, Y-axis angle, SN-MP angle. 2. made anterior facial hright more greater than posterior facial hright. 3. as a results, rotate mandible backward.

兩顎齒性前突症의 矯正治驗例

成在鉉(Jae Hyun Sung) 대한치과의사협회 1978 대한치과의사협회지 Vol.16 No.5

甚한 Angle氏 III級 不正咬合의 治驗例

成在鉉(Jae Hyun Sung) 대한치과의사협회 1978 대한치과의사협회지 Vol.16 No.4

韓國人學童의 初期混合齒列期에서 頭蓋顔面의 成長變化에 關한 累年的 硏究

成在鉉(Jae hyun Sung) 대한치과의사협회 1975 대한치과의사협회지 Vol.13 No.3

O. M. A (後頭頣部 定裝置)의 治療 効果에 對한 考察

成在鉉(Jae-Hyun Sung) 대한치과교정학회 1984 대한치과교정학회지 Vol.14 No.1

한국인의 두개안면골 성장변화에 관한 누년적 연구

박경덕,성재현,정동명,송재기,Park, Kyung-Duk,Sung, Jae-Hyun,Jeong, Dong-Myung,Song, Jae-Kee 한국데이터정보과학회 1996 한국데이터정보과학회지 Vol.7 No.1

It is important to investigate the growth aspects of craniofacial skeleton in the orthodontics. The purpose of this study is to find the factors, which have a great influence on the growth aspects of craniofacial skeleton, and to evalute the control values of each factor in order to construct orthodontics diagnostic and planning.

이변량 왜도, 첨도 그리고 표면그림

홍종선,성재현,Hong, Chong Sun,Sung, Jae Hyun 한국데이터정보과학회 2017 한국데이터정보과학회지 Vol.28 No.5

본 연구에서는 두 변수의 상관계수를 반영한 이변량 자료의 왜도와 첨도 통계량을 제안하고, 시각적으로 표현할 수 있는 표면그림을 개발한다. 이변량 왜도 통계량은 이변량 확률표본 자료의 치우침 방향과 정도를 표현하는 실수 한 쌍으로 정의한다. 첨도는 양의 값을 가지며 이변량 정규분포를 기준으로 꼬리 부분의 두터운 정도를 파악할 수 있다. 그리고 표면그림은 분위벡터를 바탕으로 평면에 구현한다. 다양한 형태의 이변량 자료를 생성하여 표면그림을 작성하고 왜도와 첨도를 계산하여 탐색해 본 결과, 왜도와 첨도 값들은 표면그림으로 구현한 이변량 자료의 특징을 잘 반영하는 것을 발견할였다. 그러므로 본 논문에서 제안한 왜도, 첨도 그리고 표면그림은 이변량 분포를 분석하는 기술통계학적 방법으로 활용할 수 있다. In this study, we propose bivariate skewness and kurtosis statistics and suggest a surface plot that can visually implement bivariate data containing the correlation coefficient. The skewness statistic is expressed in the form of a paired real values because this represents the skewed directions and degrees of the bivariate random sample. The kurtosis has a positive value which can determine how thick the tail part of the data is compared to the bivariate normal distribution. Moreover, the surface plot implements bivariate data based on the quantile vectors. Skewness and kurtosis are obtained and surface plots are explored for various types of bivariate data. With these results, it has been found that the values of the skewness and kurtosis reflect the characteristics of the bivariate data implemented by the surface plots. Therefore, the skewness, kurtosis and surface plot proposed in this paper could be used as one of valuable descriptive statistical methods for analyzing bivariate distributions.