측두하악관절 장애 환자의 임상증상과 자기공명영상에 관한 비교 연구

최용석,황의환,이상래,Choi Yong-Suk,Hwang Eui-Hwan,Lee Sang-Rae 대한영상치의학회 2003 Imaging Science in Dentistry Vol.33 No.2

Purpose : To determine the relationship between clinical symptoms and magnetic resoncance (MR) images in patients presenting with temoporomandibular joint (TMJ) disorders. Materials and Methods: This study was based on 172 joints in 86 patients presenting with TMJ disorders. Joint pain and sound during jaw opening and closing movements were recorded, and the possible relationship between disc positions and bony changes of the condylar head and the articular fossa in MR images in the oblique sagittal planes were examined. Data were analyzed by Chi-square test. Results : There was no statistically significant relationship between clinical symptoms and MR images in the patients with TMJ disorders. Conclusion: In the patient with TMJ disorders, joint pain and sound could not be specific clinical symptoms that are related with MR image findings, and asymptomatic joints did not necessarily imply that the joints are normal according to MR image findings.

아카시나무에서 미국선녀벌레 알의 조사방법

최용석,황인수,이경주,나미숙,박덕기,서화영,Choi, Yong-Seok,Whang, In-Su,Lee, Gyung-Ju,Na, Mi-Suk,Park, Deog-Kee,Seo, Hwa-Young 한국응용곤충학회 2018 한국응용곤충학회지 Vol.57 No.4

We surveyed branches of acacia trees distributed nationally in Korea to establish a common survey method that can be used by investigators to monitor for over-wintering Metcalfa pruinosa eggs. A total of 189 samples was examined, and the number of eggs on the surfaces of the branches, bases of thorns and bases of twigs was recored. When including samples in which no eggs were found at all investigation sites, none of the data followed the normal distribution. However, when samples in which no eggs were found at all sites were exclued, the density of eggs investigated at the thorn bases and twig bases followed the normal distribution. When the density of eggs was sorted based on the thickness of the branches on which they were found, these data did not follow the normal distribution. The density of M. pruinosa eggs at the thorn bases and twig bases was significantly higher than that on the branch surfaces, but there was no significant difference among branches of different thicknesses. Therefore, monitoring for M. pruinosa eggs at the thorn bases and twig bases of the nationally distributed acacia tree, irrespective of the thickness of the branches, will be able to increase the precision with which the density of this insect's eggs could be estimated. It is thus expected that this method will contribute to developing methods to better characterize the distribution and predict the occurrence of this. 우리는 미국선녀벌레의 월동알 조사를 하는데 있어 조사자의 공통된 조사방법을 제시하고자 전국적으로 분포하는 아카시나무의 가지를 부위별로 조사하였다. 조사한 총 표본수는 189개 샘플이었고 가지는 가시밑둥, 잔가지밑둥, 가지표면 세부분으로 나누어 알을 조사하였다. 모든 부위에서 알이 존재하지 않는 샘플을 포함했을 때는 모두 정규분포를 따르지 않았으나 알이 존재하지 않는 샘플을 제외했을 때는 가지밑둥과 잔가지밑둥에서 조사된 알은 정규분포를 따랐다. 가지의 굵기에 대한 정규성 정도는 없었다. 가지밑둥과 잔가지밑둥에서의 미국선녀벌레 알의 밀도는 가지표면에서 보다 유의성 있게 높은 밀도를 보여주었고 가지의 굵기별 조사에서는 유의성이 없었다. 따라서 미국선녀벌레가 주로 산란하는 아카시나무는 전국적으로 분포하고 있는 수종으로 아카시나무 가지의 굵기와 상관없이 가시밑둥과 잔가지밑둥에서 미국선녀벌레 알을 조사하는 것이 밀도 추정의 정밀도를 높여 정확한 한반도 분포 특성과 발생예측을 위한 조사방법으로 크게 기여할 것으로 판단된다.

결합조직 채득방법에 따른 치은퇴축 회복의 비교연구

최용석,임성빈,정진형,Choi, Yong-Suk,Yim, Sung-Bin,Chung, Chin-Hyung 대한치주과학회 1995 Journal of Periodontal & Implant Science Vol.25 No.1

A mucogingival grafting procedure has been developed to cover denuded root surfaces. The subepithelial connective tissue graft is composed of a free connective tissue graft and an overlying pedicle graft. The source of connective tissue graft were trap door approach and thining of a full thickness palatal flap. The purpose of this study was compare a two different connective tissue obtaining method. In this study, where palatal pocket was present, pocket elimination was performed, and the tissue normally discarded after thinning of the palatal flap was used as a grafting material. The results were as follows : 1. The mean difference between trap door approach and thinning procedure for root coverage were $2.1{\pm}O.lmm$, $2.2{\pm}O.2mm$. 2. The mean difference between trap door approach and thinning procedure for pocket depth change were $O.2{\pm}O.lmm$, $O.2{\pm}O.2mm$. 3. The mean difference between trap door approach and thinning procedure for attachment gain were $2.1{\pm}O.2mm$, $2.4{\pm}O.2mm$. 4. The esthetics in recipient site, both color match and tissue contour, were acceptable to the patient in all cases. 5. Therefore, thinning procedure were similar to trap door approach in root coverage effect.

초고층 주거용 건물 FLAT PLATE SLAB SYSTEM 시공 사례

최용석(Choi, Yong Suk),이왕희(Lee, Wang Hee),최호철(Choi, Ho Cheol),최은규(Choi, Eun Kyu) 한국콘크리트학회 2003 콘크리트학회지 Vol.15 No.2

폐변압기 절연유 중 PCBs 분석을 위한 전처리 방법 비교

최용석 ( Yong Suk Choi ),윤중섭 ( Jung Seop Yoon ),엄석원 ( Seok Won Eom ),김민영 ( Min Young Kim ),안승구 ( Seoung Gu Ahn ) 한국환경분석학회 2010 환경분석과 독성보건 Vol.13 No.3

Transformer oil is usually a highly-refined mineral oil that is stable at high temperatures and has an excellent electrical insulating property. Polychlorinated biphenyls(PCBs) had been widely used as transformer oil before the use of PCBs was banned throughout world in 1970s. Therefore PCBs is not used as transformer oil or insulating oil any more, but sometimes they have been found in transformer oil. It is difficult to separate and quantify PCBs in transformer oil because chemo-physical characteristics between PCBs and transformer oil are very similar. Lately, various solid phase extraction(SPE) methods are adopted for rapid and simple separation of PCBs but it is still hard to perfectly extract PCBs from transformer oil and loss during this extraction/cleanup process can cause a recovery problem. The aim of this study is to find an easy method for PCBs determination in transformer oil and to verify its efficiency. We applied various pretreatment methods to extract PCBs determination in transformer oil and compared with their efficiencies: laborious treatment including sulfur treatment, multilayer silica gel column and so forth, SPE method and simple treatment such as just dilution of transformer oil. For the majority of transformer oils with few impurities, large differences of PCBs between methods could not be found.

RDBMS와 Multimedia에 우수한 ALU의 VLSI 설계

최용석(Yong Suk Choi),한우종(Woo Jong Han),윤석한(Suk Han Yoon),유재희(Jae Hee You) 한국통신학회 1998 한국통신학회 학술대회논문집 Vol.1998 No.11

성능 인지 임베디드 리눅스 커널 분석 도구

최용석(Yong Suk Choi),최종무(Jong Moo Choi) 한국정보과학회 2011 정보과학회 컴퓨팅의 실제 논문지 Vol.17 No.7

스마트폰과 인터넷 TV와 같은 다양한 가전제품에서 임베디드 리눅스의 사용이 증가되면서 효과적인 커널 프로파일링과 디버깅 툴의 중요성 또한 증가하고 있다. 본 논문에서는 RTRP(Right Time Right Place)라 불리는 새로운 통합 커널 분석 도구를 제안한다. 이 도구는 적시와 적소라는 두 가지 특징을 제공한다. 적시 특징으로 이 도구는 시스템 성능을 온라인으로 모니터링하고 타겟 시스템이 성능 이상 또는 오동작을 보여줄 때 그 시점에서 유용한 분석 트리거를 지원한다. 또한 적소 특징으로 문제의 원인이 된 스택 프레임을 포함하여 적절한 시스템 정보를 제공함으로써, 관련 없는 노이즈 정보에 의해 벗어남이 없이, 문제의 위치에서 바로 디버깅이 가능하도록 한다. 제안된 도구는 카메라 동영상 압축이 가능한 임베디드 시스템에서 실험되었으며, 과도 수행이라는 문제를 발생시킨 디바이스 드라이버의 코드 위치를 적절하게 알려 줄 수 있음을 보여주었다. As the use of embedded Linux kernel increases in a variety of consumer electronics such as Smart phone and Internet TV, the significance of effective kernel profiling and debugging tools also increases. In this paper, we propose a novel integrated kernel analysis tool, called as RTRP(Right Time Right Place) tool. It supports two features, right time and right place feature. The right time feature is supported by monitoring system performance on-line and by issuing an analysis trigger at the time when the target system shows performance anomalies or misbehavior. In addition, the tool supports the right place feature by providing proper system information including the stack frame that causes the problems, allowing developers to focus on solving the problems without being deviated by irrelevant information. Experimental results, conducted on a real embedded system equipped with a live image compression facility, have shown that the tool can notify appropriate information to identify the location of a device driver that causes overrun problems.

게임 데이터 요소의 SCORM 데이터 모델에의 적용 방안

최용석 ( Yong Suk Choi ) 한국컴퓨터교육학회 2007 컴퓨터교육학회 논문지 Vol.10 No.2

사회공헌활동을 통한 스포츠조직의 브랜드3i와 관계만족 및 행동의도와의 관계: 검도조직을 중심으로

최용석 ( Choi Yong Suk ),신승호 ( Shin Seung Ho ) 한국체육학회 2021 한국체육학회지 Vol.60 No.5

이 연구의 목적은 사회공헌활동을 통한 스포츠조직의 브랜드3i(identity, image, integrity)와 관계만족 및 행동의도와의 구조적 관계를 규명하는 것이다. 이를 위해 검도조직에서 수행하고 있는 사회공헌활동과 관련한 정보를 검도참여자들에게 제공하기 전과 후에 따른 브랜드정체성의 차이를 알아보고, 브랜드정체성과 브랜드이미지, 브랜드품격, 관계만족 및 행동의도와의 관계를 파악하여 타 스포츠조직과 차별화된 검도의 마케팅 방안을 도출하고, 검도를 하나의 스포츠브랜드로 성장시키기 위한 실증적인 자료를 제공하고자 한다. 이 연구의 대상은 서울·경기지역 검도조직 공인도장에서 수련하고 있는 검도참여자들을 모집단으로 선정하여 총 443명을 대상으로 설문조사하였으며, 이 중 응답이 불성실한 8부를 제외한 435부를 최종분석 자료로 활용하였다. 연구결과 다음과 같은 결론을 얻었다. 첫째, 검도조직에서 수행하고 있는 사회공헌활동과 관련한 정보를 제공하기 전보다 제공 후에 브랜드정체성이 유의하게 높아졌다. 둘째, 사회공헌활동을 통한 검도조직의 브랜드정체성은 브랜드이미지와 브랜드품격에 모두 유의한 영향을 미쳤고, 브랜드정체성 중 브랜드명성은 관계만족에 유의한 영향을 미쳤다. 셋째, 사회공헌활동을 통한 검도조직의 브랜드이미지는 브랜드품격과 관계만족에 모두 유의한 영향을 미쳤고, 브랜드이미지 중 브랜드편익은 행동의도에 모두 유의한 영향을 미쳤다. 넷째, 사회공헌활동을 통한 검도조직의 브랜드품격은 관계만족에 유의한 영향을 미쳤다. 다섯째, 검도참여자의 관계만족은 모두 행동의도에 유의한 영향을 미쳤다. The purpose of this study is to verify the structural relationships among relationship satisfaction, behavior intention, and brand 3i(identity, image, integrity) of the sport organization through social contribution activities. To do this, compare the brand identity of the Kumdo organization before and after revealing information on ongoing social contribution activities. Also, analyze the brand identity, brand image, brand integrity, relationship satisfaction, and behavior intentions to draw a differentiated marketing strategy for Kumdo in the highly competitive sport environment and to provide empirical data as a supporting means of developing Kumdo as a sport brand. Subjects of this research were chosen voluntarily as Kumdo players training in clubs in the Korean Kumdo Association in Seoul and in Gyeonggi province. A total of 443 people participated in the questionnaire, and 435 replies were used for the final analysis. Eight replies were deemed inadequate due to poor reliability. Results of the data processing are as follows. First, the brand identity had significant increases after providing information on social contribution activities performed by the Kumdo organization. Secondly, the brand identity of the Kumdo organization through social contribution activities had significant effects on both brand image and integrity, and brand reputation in brand identity had significant effects on the relationship satisfaction. Thirdly, the brand image of the Kumdo organization through social contribution activities had significant effects on both brand integrity and relationship satisfaction, and the brand benefit had significant effects on the behavioral intention. Fourthly, the brand integrity of the Kumdo organization through social contribution activities had significant effects on the relationship satisfaction. Fifth, the relationship satisfaction of Kumdo participants had significant effects on the behavior intention.

Metarrhizium anisopliae (Metschn.) Sorok이 생산하는 Biopolymer YU-122의 물리, 화학적 특성

최용석(Yong-Suk, Choi),옥승호(Seung-Ho Ohk),유주현(Ju-Hyun Yu),배동훈(Dong-Hoon Bai) 한국식품과학회 1997 한국식품과학회지 Vol.29 No.1