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.

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.

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.

Rasch 모형을 활용한 U-19 축구 국가대표팀 선수들의 기능적 움직임 능력 검증

최용석 ( Yong Suk Choi ),최수지 ( Su Ji Choi ),강윤중 ( Yun Jung Kang ),장동규 ( Dong Kyu Jang ),정다움 ( Da Um Jung ),박미나 ( Mi Na Park ),강성우 ( Sung Woo Kang ),전지현 ( Ji Hyun Chun ),이미영 ( Mi Young Lee ),홍정기 ( Jung Gi 한국스포츠정책과학원(구 한국스포츠개발원) 2015 체육과학연구 Vol.26 No.4

본 연구는 기능적 움직임 검사(Functional Movement Screen: FMS)의 결과를 통해 U-19 축구선수 집단에 적용된 FMS 측정항목들의 적합성과 난이도를 분석하여 U-19 축구선수들의 기능적 움직임 특성 및 능력을 파악하고자 하였다. 파주 NFC U-19 축구 국가대표팀 선수들 30명(19.3±0.66세)의 FMS 7개 항목(Deep Squat: DS, Hurdle Step: HS, In-line Lunge: IL, Shoulder Mobility: SM, Active Straight Leg Raise: ASLR, Trunk Stability Push-Up: TSPU & Rotary Stability: RS)을 측정하였다. 그 결과를 바탕으로 Rasch 모형을 사용하여 선수들에 대한 측정항목의 적합성(goodness-of-fit)과 난이도(item difficulty)를 분석하였다. FMS측정 결과, 총 점수 평균은 10.02±1.79점이였으며, HS, SM, TSPU를 제외한 DS, RS, IL, ASLR가 적합한 측정항목으로 나타났다(0.5< x <1.5). 또한, 적합한 측정항목인 DS, IL, ASLR, RS의 난이도는 2.08, .26, -3.16, .83(logit)으로 나타났으며, 순서대로 난이도가 높은 것으로 밝혀졌다. 따라서 본 연구는 U-19 축구선수들의 기능적 움직임의 수준이 성인 선수들 보다 낮으며, FMS 측정항목들이 종목의 특성과 선수들의 연령에 따라 다른 결과를 나타낼 수 있음을 제시하고 있다. The primary purpose of the study was to identify the characteristics of Korean national youth soccer players’ functional movements. The secondary purpose was to examine whether certain tests of Functional Movement Screen (FMS) meaningfully achieve goodness-of-fit for the soccer-specific movements. Korean national youth soccer players (30 male players, 18.37 ± 0.67 yrs, 178.7±7.09 cm, 70.2±6.46 kg), performed FMS tests [deep squat (DS), hurdle step (HS), in-line lunge (IL), shoulder mobility (SM), active straight leg raise (ASLR), trunk stability push-up (TSP), and rotary stability (RS)]. The mean (±SD) FMS composite score and each test score were calculated. Rasch analysis, which was used to determine the goodness-of-fit for the tests, was applied to examine the item difficulty of the FMS tests. The mean FMS composite score was 10.2± 1.79; the mean DS, HS, IL, SM, ASLR, TSP, and RS score were 1.13±0.35, 1.27±0.45, 1.4±0.56, 1.6±0.77, 2.07±0.69, 1.43±0.82, and 1.3±0.47 respectively. According to the results of Rasch analysis, 4 tests (DS, IL, ASLR, and RS) were shown to be within the acceptable range (infit & outfit > 0.5 ~ < 1.5). The other 3 tests (HS, SM, and TSP) were shown to be out of acceptable range. The additional analysis revealed the DS (logit = 2.08) as the most difficult test and ASLR (logit = -3.16) the least. The results of the study showed that the players’ FMS composite score was lower (< 14) than the cut-off points used by previous studies for different athletes. The further study is warranted to examine the relationships between the scores of the tests appeared to be soccer-specific in the present study and the level of performance variables.

유아의 어휘 다양도를 활용한 어휘력 평가 기준 시안

최용석 ( Yong Suk Choi ),전은진 ( Eun Jin Jeon ) 한국언어문화학회 2009 한국언어문화 Vol.0 No.40

This study analyzed TNW(Total Number of Words), NDW(The Number of Different Words) and TTR(Type-Token Ratio) in Korean Young Children. TNW is to defined as the total number of words occurred in the same number of utterances. NDW which is the scale to measure the diversity of words, is the meaning numerical value measuring the number of different words occurred in the same number of utterances. TTR is the most widely used statistical method in measuring diversity of words, through which the proportion of different words to the total words can be scaled. As a result of analysis, in case of TNW and NDW, there was no significant difference statistically across ages and sexes. But with regard to TTR, there was significant difference between 5-year-old Children and 6-year-old Children. A tentative plan on the criterion for evaluating vocabulary skills could be suggested through the analysis result of such lexical diversity.

게임 데이터 요소의 SCORM 데이터 모델에의 적용 방안

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

단순 매립지 폐기물 침출수의 장기적 특성: 난지도 매립지 중심의 사례연구

최용석 ( Yong Suk Choi ),김홍제 ( Hong Je Kim ),최금숙 ( Kum Sook Choi ),김진아 ( Jin A Kim ),윤중섭 ( Jung Seop Yoon ),엄석원 ( Seok Won Eom ),김민영 ( Min Young Kim ),안승구 ( Seoung Gu Ahn ) 한국환경분석학회 2009 환경분석과 독성보건 Vol.12 No.2

전자계산서의 매크로 작성을 위한 직접 조작 접속과 명령어 접속의 비교

최용석(Yong Suk Choi),서길수(Kil Soo Suh),이현규(Hyeon Gyu Lee) 한국경영학회 1995 經營學硏究 Vol.24 No.4

The objective of this study is to compare a direct manipulation interface and a command language interface for writing macros in a spreadsheet program from the novice end-user perspective. The comparison focuses on the effect of different macro interfaces on the user performance(as measured by correctness and speed) in writing macros across two levels of difficulty(simple and compound). To accomplish this objective, a laboratory experiment was conducted using a spilt-plot factorial 2.2 design in which one between-subjects factor and one within-subjects factor were involved. A total of fifty four subjects was randomly assigned to one of the interface types, and then these two experimental units were exposed to all levels of difficulty. Macro correctness and macro writing time were used as measures of user performance. The results of the study indicated that the direct manipulation interface subjects performed significantly better than the command language interface subjects in terms of both overall macro correctness and macro writing time. The direct manipulation interface obtained higher scores for macro correctness and spent less time in writing macros than the command language interface subjects. There were no significant interaction effects between interface type and difficulty levels of macros.

대학검도선수의 성취목표성향과 경쟁불안 및 스포츠일탈과의 관계

최용석(Yong-suk Choi),신승호(Seung-ho Shin) 대한검도학회 2014 대한검도학회지 Vol.25 No.2

이 연구는 대학검도선수의 성취목표성향과 경쟁불안 및 스포츠일탈과의 관계에 대하여 조사·분석하여 이를 통해 대학검도선수들의 스포츠 일탈행동이 얼마나 발생하는지 파악하고 이 자료를 토대로 검도지도자의 효율적인 지도방향과 대학검도선수의 올바른 성장을 위한 기초자료를 제공하는 데 그 목적이 있다. 이 연구의 목적을 달성하기 위하여 2014년 대한체육회에 선수등록 된 대학 1부 검도선수들을 모집단으로 설정하였고 편의표본추출법을 통해 표본을 선정하였고, 총 338부의 설문지를 배포하여 신뢰성이 떨어진다고 판단되는 자료와 무기입자료 15명을 제외한 323명의 자료가 최종 분석에 이용되었다. 조사도구는 설문지를 이용하였으며 설문지의 구성은 Elliot와 McGregor(2001), 박중길, 장덕선(2009), Martens, Burton, Vealey, Bump & Smith(1990), 이보선(2001)의 선행 연구를 기초로 본 연구의 목적에 맞게 수정·보완하였다. 또한, 자료처리를 위해 SPSSWIN 18.0 프로그램을 이용하였고 빈도분석, 요인분석, t 검정, 상관관계분석, 다중회귀분석을 실시하여 다음과 같은 결론을 얻었다. 첫째, 성취목표성향의 숙달접근이 높을수록 인지적, 신체적 불안이 유의하게 낮았으며, 상태자신감이 유의하게 높았다. 또한, 숙달회피와 수행회피성향이 높을수록 인지적, 신체적 불안이 유의하게 높았다. 둘째, 성취목표성향의 숙달접근, 수행회피성향이 높을수록 긍정적 일탈이 유의하게 높았다. 또한, 숙달회피성향이 높을수록 폭력이 유의하게 높았으며, 수행회피성향이 높을수록 폭력은 유의하게 낮았다. 셋째, 경쟁불안의 인지적 불안이 높을수록 조직적 일탈이 유의하게 높았으며, 상태자신감이 높을수록 조직적 일탈은 유의하게 낮았다. This study was to examine the extent of departure from sports by university Kendo athletes by studying and analyzing the relationship between an achievement goal orientation, a competition anxiety and a departure from sports and to provide basic data for Kendo instructors to provide effective training and for athletes to become a proper athlete. The study selected a sample group from Division 1 university Kendo athletes registered with the Korea Sports Council in 2014 and samples were selected through the convenience sampling method, and 338 copies of surveys were distributed and 323 surveys were used for final analysis except 15 surveys deemed to be lacking reliability and lacking answers. Surveys were used and surveys were modified and revised to meet the aim of the study based on previous studies by Elliot and McGregor (2001), Jung Gil Park, Duk Sun Jang (2009), Martens, Burton, Vealey, Bump & Smith (1990), Bo Sun Lee (2001). The data was processed with SPSSWIN 18.0 and the following results were obtained by conducting frequency analysis, factor analysis, t-verification, correlation analysis and multiple regression analysis. First, there were meaningful differences in confidence level according to ages, years of practicing as an athlete, acquired level. Athletes over 21 years old tend to show less violence than athletes younger than 20, and as athletes with less than 6 years of experience showed less cheating than those over 7 years of experience, and athletes with level lower than 2 showed higher positive departures than athletes with level higher than 3. Second, cognitive, physical anxieties were meaningfully lower as mastery of achievement goal orientation is higher, and confidence level was meaningfully higher. Furthermore, cognitive, physical anxieties were meaningfully higher as mastery avoidance and performance avoidance is higher. Third, positive departures were meaningfully higher as master and performance avoidance is higher. Furthermore, violence was meaningfully higher as mastery avoidance is higher, and violence was meaningfully lower as performance avoidance was higher. Fourth, organized departures were meaningfully higher as cognitive anxiety on competition anxiety is higher, organized departures were meaningfully lower as confidence level is higher.

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