파노라마 방사선 사진을 이용한 한국인 소아의 하악공 위치에 대한 연구

홍소이,정서영,마연주,정영정,안병덕 大韓小兒齒科學會 2011 大韓小兒齒科學會誌 Vol.38 No.4

The aim of this study was to evaluate the position of the mandibular foramen in panoramic radiographs of Korean children to provide information for successful inferior alveolar nerve block anesthesia. 240 panoramic radiographs of 7 to 15-year-old boys and girls were analyzed. The subjects were divided into 4 groups in boys and girls according to their age.; 7-8, 9-10, 11-12 and 13-15 years old. The shortest distances from the center of the mandibular foramen to the anterior border of ramus, to the posterior border of ramus, to the antegonial notch and to the mandibular notch and the perpendicular distances from the center of the mandibular foramen to the occlusal plane were measured. The following results were obtained. 1) Although the relative position of the mandibular foramen in the ramus of mandible tended to move anteriorly for both genders with age, the vertical position did not correlate with age. 2) The mandibular foramen moved upward in relation to the occlusal plane with age, and showed statistically significant correlation with age(p<0.05). 3) The mandibular foramina of boys, when compared to those of girls, were located more superiorly in relation to the occlusal plane and more superiorly and posteriorly in the ramus of mandible. 본 연구는 소아에서의 성공적인 하치조신경 전달 마취를 위한 정보를 얻기 위해 파노라마 방사선 사진에서 한국인 소아의 하악공 위치를 분석하였다. 총 240명의 7-15세의 파노라마 방사선 사진을 수집하여, 연령에 따라 7-8세, 9-10세, 11-12세, 13-15세의 하위 그룹으 로 나누었으며 각 그룹은 남녀 각 30명씩을 포함하였다. 좌우측의 하악공으로부터 하악절흔, 악각전절흔, 하악지 전연, 하악 지 후연까지의 최단거리와 교합평면까지의 수직거리를 측정하였으며, 하악공으로부터 하악절흔과 악각전절흔의 거리의 비와 하악공으로부터 하악지 전연과 하악지 후연의 비를 계산하였다. 연구 결과는 다음과 같다. 1) 하악공의 하악지 내 상대적 위치는 남녀 모두에서 연령 증가에 따라 전방으로 이동하는 경향이 관찰되나, 수직적인 위치 는 연령과 유의한 상관관계를 보이지 않았다. 2) 하악공의 교합평면과의 상대적인 위치는 연령 증가에 따라 교합평면 하방에서 상방으로 이동하였으며, 연령과 높은 상 관관계를 나타내었다(p<0.05). 3) 여자보다 남자에서 하악공이 교합평면을 기준으로 더 상방에, 하악지 내 전후방 및 수직적으로는 하악지의 후상방에 위 치하여 성별에 따른 차이를 보였다(p<0.05).

생물화공 에너지 / 환경 : 염소 라디칼이 촉매로 작용하는 에틸렌 디클로라이드 열분해 반응의 해석

이주혁(Joo Hyouk Yi),최병석(Byung Seok Choi),이상욱(Sang Wook Lee),오주석(Joo Seok Oh),이종협(Jong Heop Yi) 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.2

The pyrolysis of ethylene dichloride (EDC) is investigated on the base of kinetic mechanism schemes. Hundreds of radicals and molecular reactions and H and Cl abstraction are involved and thermodynamic functions and reversible kinetics were considered simultaneously in the schemes. The cracking depth of EDC and the amount of by-products are calculated as a function of operating temperature and additive concentration. The calculated results are in good agreement with the trend of the commercial plant data. Suggested methodology can provide practical responses involved in the operation of an industrial EDC pylorysis unit.

First report of cross-species transmission of deer hepatitis E virus to a guanaco in Korea

Byung-Joo Park,Ji-Hyung Yi,Hee-Seop Ahn,Sang-Hoon Han,Yong-Hyun Kim,Hyeon-Jeong Go,Dong-Hwi Kim,Joong-Bok Lee,Seung-Yong Park,Chang-Seon Song,Sang-Won Lee,In-Soo Choi 한국예방수의학회 2017 예방수의학회지 Vol.41 No.3

The hepatitis E virus (HEV) is a leading causative agent of acute hepatitis in humans. Zoonotic HEV strains have been isolated from several animal species, including pigs. New HEV variants have been recently isolated from camels in the Middle East. In the present study, fecal samples from fallow deer, formosan deer, alpaca, and guanaco were analyzed for the detection of HEV. One HEV strain was detected from guanaco, a species of camelids. The nucleotide sequence of guanaco HEV was identical to those of deer HEV-3 strains, which implied the cross-species transmission of HEV-3 from deer to guanaco.

The Benefit of Non-curative Resection for T4 Gastric Carcinoma Patients

Byung Ruhl Oh,Kyeung Won Seo,Dong Yi Kim,Jae Kyoon Joo,Young Kyu Park,Seong Yeob Ryu,Hyeong Rok Kim,Young Jin Kim,Shin Kon Kim 대한외과학회 2005 대한외과학회 학술대회 초록집 Vol.2005 No.10

Effects of difructose dianhydride (DFA)-IV on <i>in vitro</i> fertilization in pigs

Yi, Young-Joo,Kamala-Kannan, S.,Lim, Jeong-Muk,Oh, Byung-Taek,Lee, Sang-Myeong Editorial Department of Journal of Biomedical Rese 2017 JOURNAL OF BIOMEDICAL RESEARCH -ELSEVIER- ENGLISH Vol.31 No.5

<P>Difructose dianhydride IV (DFA-IV) is produced from levan, which is a natural polysaccharide that belongs to the fructan family, through the activity of levan fructotransferase (LF) derived from microorganisms. Recently, DFA-IV has been expected to have diverse applications in the food and medical industry. Here, we examined the potential application of DFA-IV for<I>in vitro</I> fertilization (IVF) in pigs. In the assessment of acrosomal integrity during incubation, intact acrosomal or viable spermatozoa were highly sustained in 0.1% or 0.25% DFA-IV (69.8%-70.8%,<I>P</I><0.05). Reactive oxygen species (ROS) levels during sperm incubation decreased following the addition of DFA-IV, and 0.1%-0.5% DFA-IV in particular significantly decreased ROS production relative to that seen with no addition or 0.75% DFA-IV. Total fertilization (mono+ polyspermic oocyte) rate was significantly higher in the addition of 0.1% DFA-IV (94.2%) than with other concentrations (71.8%-86.7%,<I>P</I><0.05). When using reduced IVF times and lower sperm numbers, we found that addition of 0.1%–0.5% DFA-IV significantly increased the fertilization rate (<I>P</I><0.05). Fertilized oocytes treated with 0.1% DFA-IV exhibited higher embryonic development and blastocyst formation than those treated with other concentrations (<I>P</I><0.05). Consequently, the addition of DFA-IV during IVF improved fertilization and embryonic development, suggesting the possible use of novel sugars for enhancement of assisted reproductive technology (ART) in mammals. </P>

Prion Protein Gene Polymorphism in Korean Native Goats.

Hyun-joo Sohn,Se-young Lee,In-soo Cho,Young-pyo Choi,Yi-seok Joo,Nam-in Jo,Yong-sun Kirn,Kwon Hur,Byung-hoon Jeong 대한수의학회 2003 대한수의학회 학술대회발표집 Vol.2003 No.-

Reduction of anti-nutritional factors in soybean meal and development of feed ingredients by alcohol extraction and fermentation technology

Song Yi Han,Sun Jin Kim,Purum Kim,Min Choul Shin,Seok Hwan Lim,Byung-Serk Hurh,Bong-Joo Lee,Sang Gu Lim,Kang Woong Kim,Sang Woo Hur,Yong Ho Choi 한국수산해양기술학회(구 한국어업기술학회) 2018 한국수산해양기술학회 학술발표대회 Vol.2018 No.11

Branchial Cleft Cyst Mimicking Malignant Thyroid Neoplasm Concurrent with Medullary and Papillary Thyroid Carcinoma: a Case Report

( Wook Yi ),( Bo Hyun Kim ),( Byung Joo Lee ),( Kyungbin Kim ) 대한갑상선학회 2021 International Journal of Thyroidology Vol.14 No.1

Branchial cleft cysts are the most common lateral neck mass, and usually have well-delineated cystic structures under ultrasonography. Ultrasonography and fine needle aspiration cytology is very helpful during preoperative diagnosis. However, these cysts may occur in unusual locations and have a sonographic morphology similar to malignant thyroid neoplasm. A 61-year-old woman presented with thyroid nodules, and ultrasonography revealed a 0.8-cm, hypoechoic, solid nodule with microcalcifications in the right lobe of thyroid in the lower portion. Postoperative histopathological examination revealed the 0.8-cm hypoechoic nodule to be a branchial cleft cyst. In addition, concurrent medullary thyroid carcinoma (MTC) and papillary thyroid carcinoma (PTC) were found. Herein, we present a rare case of branchial cleft cyst mimicking malignant thyroid neoplasm concurrent with medullary and PTC.

다양한 영상 데이터 수집을 위한 3차원 공간데이터 기반 자율주행 시뮬레이션 시스템 구현

주은오(Joo, Eun Oh),김동연(Kim, Dong Yeon),조병수(Cho, Byung Soo),김민수(Kim, Min Soo) 대한공간정보학회 2021 대한공간정보학회지 Vol.29 No.3

최근 실세계에서 수집되는 영상 데이터를 활용하여 딥러닝 기반 자율주행 성능을 개선하기 위한 연구가 활발히 수행되고 있다. 그러나 딥러닝 모델을 생성하기 위해 요구되는 많은 양의 영상 데이터를 실제 주행환경에서 수집하는 것은 시공간적 및 비용적인 한계가 존재한다. 이에 본 연구에서는 3차원 공간정보를 활용하여 실세계를 모사한 가상환경을 구축하고, 다양한 시나리오 환경에서 영상 데이터를 수집할 수 있는 자율주행 시뮬레이션 시스템을 제안하고자 한다. 제안된 시스템은 사용자가 원하는 가상의 주행환경 설정과 차량 수집 센서 설정 기능을 제공하여 다양한 영상 데이터 수집이 가능할 뿐만 아니라, 가상환경에서 시공간적 한계 없이 실세계에서는 수집이 어려운 영상 데이터의 수집도 가능할 것으로 기대된다. Recently, there has been so much research to improve deep learning-based autonomous driving performance using imagery data collected in the real world. However, it has spatiotemporal and cost limitations to collect a large amount of imagery data required to create a deep learning model in a real driving environment. Therefore, in this paper, we propose an autonomous driving simulation system that can virtualize the real world using 3D spatial data and can collect imagery data in various scenario environments. It is expected that it is possible for the proposed system not only to collect various kinds of imagery data using the virtual environment setting and the vehicle’s sensor setting, but also can collect imagery data that is difficult to collect in the real world without spatiotemporal limitations.

체육교사의 교수행동에 대한 학생의 인식과 선호도

이병준(Byung Joon Lee),김정완(Jeong Wan Kim),이주욱(Joo Wook Yi) 한국체육교육학회 2011 한국체육교육학회지 Vol.16 No.2

이 연구의 목적은 중학교 학생들이 체육수업시간 동안 체육교사의 교수행동을 어떻게 인지하고 있는지 조사하기 위한 것이고, 교사의 교수행동에서 학생들의 인식과 선호도에 대한 차이점을 이해하는 것이다. 서울시교육청 산하에 있는 11개 지역 교육청으로부터 모집된 혼성학급에서 총 475명의 학생들이 연구대상이다. 연구대상은 무선표집 방법으로 선정되었다. 학생들을 가르쳤던 14명의 체육교사들도 연구에 참여하였다. 학생들은 12개의 교수행동 범주가 포함된 코칭행동체계(CBAS: Smith, Smoll, & Curtis, 1979) 설문지에 응답하였다. 문항들은 12개 범주에 해당하는 교수 행동에 대한 학생들의 선호를 측정하기 위해 개발되었다. 그리고 문항들은 체육수업에 대한 학생들의 태도를 측정하기 위해 설계되었다. 자료분석을 위해 상관분석, 일원변량분석(one-way ANOVA), 독립표본 t검증, 종속표본 t검증, 다변량분석(MANOVA)을 사용하였고 다음과 같은 결과가 나타났다. 첫째, 체육교사의 교수행동에 대한 학생의 인식을 분석한 결과 강화-격려형과 체벌-통제형의 두 가지 유형으로 나타났다. 둘째, 학생들의 선호가 긍정적인 교수행동에 대한 그들의 인식보다 더 높았다. 다른 한편, 학생들의 인식이 부정적인 교수행동에 대한 그들의 선호보다 더 높았다. 이와 같은 경향은 남학생들 보다 여학생들에게 뚜렷하게 나타났다. 셋째, 교사의 교수행동은 체육수업에 대한 학생들의 태도에 직접적인 영향을 미치고 있었다. 마찬가지로 계속 지도 희망 여부와 교사 선호도는 처벌·통제를 얼마나 하느냐에 따라 많은 영향을 받는 것으로 밝혀졌다. 처벌-통제형은 체육교사에 대한 학생들의 선호에 악영향을 미치게 된다. The purpose of the present study was to examine how middle school students perceive their physical education (PE) teacher`s teaching behavior during PE classes, to identify any perception-preference differences in teachers` teaching behavior, and to determine the effects of students` perception of teaching behavior on their attitude toward PE. A total of 475 middle school students in coed classes recruited from 11 educational districts in Seoul Metropolitan City participated in the study. Stratified clustered random sampling technique was used. Fourteen PE teachers who taught the students also participated. The student responded to the questionnaire version of Coaching Behavior Assessment System (CBAS: Smith, Smoll, & Curtis, 1978) Which included 12 teaching behavior categories. Items were developed to measure students` preference of teaching behavior across 12 categories. In addition, items designed to measure students` attitude toward PE classes were used. Data were analyzed using correlation analysis, one-way ANOVA, independent sample t-test, paired sample t-test, and MANOVA. Drawing from data analyses, the following results emerged. First, analysis of students` perception of PE teachers` teaching behavior resulted in two major styles (i.e., reinforcement-encouragement style and punishment-control style). The reinforcement-encouragement style is characterized by positive teachinig behavior, while the punishment-control style is related to frequent use of negative teaching behavior. Second, students` preference was higher than their perception for positive teaching behavior. On the other hand, students` perception was higher than their preference for negative teaching behavior. These findings represents that students want to receive more positive teaching behavior and less negative behavior. The trend was stronger for the female students that for the male counterparts. Third, it was found that teacher`s teaching behavior had direct impact on students` attitude toward PE lessons. Students who reported higher level of teachers` reinforcement and encouragement perceived that their teachers had better teaching skills and knowledge. Likewise students who reported higher level of punishment and control tended not to want their PE teacher to teach them next year. Punishment-control style had adverse impact on students` preference to PE teacher.