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조용철 대한무도학회 2000 대한무도학회지 Vol.2 No.1
The purpose of this study is to show the periodical changes of judo competition rules by primarily examining the changes of the judo competition area, the judo uniform, the duration of contest and prohibited acts. In 1882 the judo mat consisted of 12 tatami mats whereas today the competition area ranges from 14mxl4m to 16mxl6m. The standard of the judo competition area has been changed to ensure a more reasonable process of a judo match and to provide better safety for the judo competitors. If one takes a close look at the regulation duration of contest one will learn the fact that there was no fixed time limits m the early stage of judo competition. From 1925 to 1951 such time restrictions of a judo match did indeed exist, however, depending on the nature of the tournament the time limits would easily be changed. From 1986 until today the regulation duration of contest is as follows men 5 min, women 4 min. In the early stage of judo the uniform was not considered to be too important and no such regulation is to be found. Regulations such as duration of contest, prohibited acts and competition techniques seemed to be regarded much higher. Rules on prohibited acts are defined in the rules for refereeing in individual judo practice which came out in Japan in 1899 as the most important domain of rules of refereeing. The stipulation of prohibited acts were an important part of judo matches m the early years of
진위천 단위유역의 유량-수질 특성 및 하천 등급화 평가
조용철,최진우,노창완,권필상,김상훈,유순주 한국환경영향평가학회 2018 환경영향평가 Vol.27 No.6
The aim of this study is to examine the characteristics analysis of the discharge and water quality based on TPLMS (Total Pollution Load Management System) in the Jinwi River unit basin, and to propose a management plan by selecting the point that needs improvement of water quality in order to achieve the target water quality. We evaluated the discharge and water quality characteristics, statistical analysis, daily delivery load and daily delivery density, grade classification, for 14 total pollution load site’s from 2014 to 2016 year in Jinwi river unit basin. The average discharge of Jinwi river unit basin is 22.411 m3/s and discharge of Hwangguji River is 32.8% and the water quality characteristics along the tributary river were clarified spatially. As the result, it was analyzed that Seongeun River is an indirect indicator of organic pollutants, Gwanri River is a seasonal factor, Osan River and Hwangguji River both affect water quality. Estimation of delivered pollutant loads at the HG-3 site was 6,470.4 BOD kg/day, 6,846.7 TN kg/day and delivered pollutant loads density increased to 220.9 BOD kg/day/km2, 22.4 TP kg/day/km2 at the HG-4 site. This result demonstrates that the total pollution load site needed to improve water quality of the Jinwi River unit basin was HG-3 site. 본 연구는 진위천 단위유역의 수질오염총량제도에 따른 유량 및 수질 특성을 정확히 파악하고 목표수질을 달성하기 위하여 수질 개선이 우선적으로 필요한 총량 지점을 선정하여 관리 방안을 제시하는 것이다. 진위천 단위유역의 2014년부터 2016년까지 14개 총량 지점을 대상으로 유량 및 수질 특성, 통계 분석, 유달부하량 및 유달부하 밀도 산정, 하천 등급화 등을 평가하였다. 진위천 단위유역의 유량은 평균 22.411 m3/s이고 황구지천의 유량이 32.8%를 차지하였으며 지류 하천에 따른 공간적으로 수질특성이 뚜렷하게 나타났다. 주성분 분석 결과 오산천과 황구지천은 유기오염 간접지표 및 계절적 요인, 성은천은 유기오염 간접지표 요인, 관리천은 계절적 요인이 수질에 영향을 미치는 것으로 분석되었다. 유달부하량 산정 결과HG-3 지점에서 6,470.4 BOD kg/day, 6,846.7 TN kg/day로 높게 나타났으며 유달부하 밀도는 HG-4 지점에서 220.9 BOD kg/day/km2, 22.4 TP kg/day/km2로 높게 나타났다. 하천 등급화 방법을 이용한진위천 단위유역의 수질 개선이 우선으로 필요한 총량 지점은 HG-3 지점으로 나타났다.
조용철,김광용,박상규 대한기계학회 1990 대한기계학회논문집 Vol.14 No.3
Oblique impinging plane jets were investigated experimentally and numerically at Reynolds number 21000. The inclination angle was varied from 90.deg.(normal to the impinging plate) to 60.deg.. The distance H between the nozzle exit and the stagnation point on the impinging plate was fixed at H/D=8. The working fluid was air. The mean velocity components and turbulent quantities were measured by a hot-wire anemometer. And the static pressure distributions on the impinging plate were measured by a Pitot tube. In numerical computation, the governing partial differential equations of elliptic type were solved with conventional k-.epsilon. turbulence model. The measurements show that, after impingement, the jet half width alone the wall increases in both directions, and that similarity for each turbulent quantity such as Reynolds shear stress or turbulent kinetic energy is revealed in the wall jet region. The computed results show some deviation from experimental data in the impingement region, where streamline curvature is significant. However, the computed results agree qualitatively well with measurements. 본 연구에서는 2차원 경사충돌분류에 대한 실험을 수행하였고, 이 결과를 수] 치해석에 의한 계산치와 비교하였다. 실험에서는 난류특성을 구명하기 위하여 열선 풍속계를 사용해 충돌각의 변화에 따른 평균속도, 각 난류응력성분, 압력등을 측정하 였다.수치해석을 위한 난류모델로는 표준 K-.epsilon.모델을 사용하였다.
RFID와 모바일 기술을 활용한 화물차량의 위치기반 서비스 시스템에 관한 연구
조용철,이창호 대한안전경영과학회 2007 대한안전경영과학회지 Vol.9 No.1
Recently, RFID technology is being widely embraced in the supply chain, by manufacturers, retailers, and logistics firms. This study shows the RFID system to provide location based service for commercial vehicle by integrating tracking function of GPS with Mobile service. For this, we configured PC-based terminal for vehicle and developed application consisted of RFID and GPS manager program. In web service module which uses mobile service, commodity information acquired from each vehicle at real-time is added at database and it is analyzed in various aspects to support management decision through the Legacy system.
조용철,좌종근 濟州大學校 産業技術硏究所 1998 산업기술연구소논문집 Vol.9 No.1
This paper presents a new method to determine the T-type equivalent circuit parameters for steady state analysis of induction motors. To determine the parameters, four simultaneous equations are obtained from the T-type equivalent circuit conditions. The initial values for these equations are evaluated by the simplified equivalent circuits. and then the parameters are calculated by iterative computation. Test results are compared with the computed results of the conventional method and the proposed method to demonstrate the validity of the proposed method. And it is found that the latter method is more accurate than the former method.
조용철,황성주 龍仁大學校 武道硏究所 2004 武道硏究所誌 Vol.15 No.1
The purpose this study to investigate continental different of judo competition techniques. I have got the following condusion through the consequence of the investigation analysis about the frequency distribution of the obtained marks, the distribute of irregular numbers and the use frequency distribution which was showed of each technique and these were showed through the total 3 Games. The method of crosstabs was used to verify the mean ratio and frequency distribution test was also used for the verification when there was a slight difference among the continental difference. All data were analyzed by SPSS 11.0 producer. The results of this study are like the below: 1) The result in the case of techniques ratio to continental different showed that significant difference throwing techniques and drop techniques. 2) We examined a technique in this 3 Games. In results, the rate of used technique is followed: Asia(foot techniques(41.8%), hand techniques(36.1%), drop throw techniques(10.8%)), Europe(foot techniques(38%), hand tec h iques(27.3%), drop throw techniques(14.5%)) and America(foot techniques(41.9%), hand techniques(34.9%), drop throw techniques(9.3%)) significant difference techniques ratio. 3) Male player of extra light and half light weight used hand techniques Asia(36.3%), Europe(36%), America(37.8%) and waist techniques is Asia(9.1%), Europe(6.1%), America(5.4%). Foot techniques is Asia(41.9%), Europe(39.9%), America(45.9%). Drop throw techniques is Asia(8.2%), Europe(8.3%), America(5.4%). Female player used hand techniques(Asia(35.7%), Europe(12.2%), America(16.7%)). The Europe waist techniques(122%) is higher than Asia(3.2%).
응급의료센터에 내원한 노인 환자에서 구조물 촉지를 통한 요추천자와 초음파를 이용한 요추천자의 유용성 비교
조용철,구도현,오세광,정원준,이원석,유연호,유승,김승환,유인술,이진웅 대한응급의학회 2009 대한응급의학회지 Vol.20 No.3
Purpose: We evaluated the utility of ultrasound-assisted lumbar puncture (UALP) in aged patients who visited our emergency center. Methods: This was a prospective, randomized, controlled study. From July to December 2007 we enrolled patients who were at least 60 years of age . Patients were divided into a group that had lumbar puncture (LP) using landmark palpation (group A) and a UALP group (group B). We did between-group comparisons for the number of attempts, procedure time, the number of LP failures, and whether traumatic LP was done. For all hypotheses, a significance level of 0.05 was used. Variables are reported as percentages and mean ± standard deviation. Results: We enrolled sixty aged patients: 30 in group A and 30 in group B. There were 5 cases of LP failure in group A and none in group B (p<0.05). There were 6 cases of traumatic lumbar puncture in group A, and one case in group B (p=0.05). The number of attempts was 3.3±2.4 in group A and 1.5±0.8 in group B (p<0.05). It took 10.6±7.7 minutes to finish each LP in group A compared to 5.3±4.2 minutes in group B (p<0.05). Conclusion: The use of ultrasound-assisted lumbar puncture significantly reduces the number of failures, the number of attempts, and the procedure time in aged patients.
조용철,남영우,이두용,장정환,이창호 대한안전경영과학회 2011 대한안전경영과학회 학술대회논문집 Vol.2011 No.11
2009년 인천지역의 목재 및 나무제품제조업과 가구 제조업체는 총 1,285개로 각각 전국 목재 관련 제조업체의 10.4%와 6.7%를 차지하여, 일반 제조업의 전국비중 6.1%에 비해 높은 비율을 보이고 있다. 또한 종사자 수 역시 총 13,202명으로 각각 전국목재 관련 제조업체의 21.0%와 9.9%로 인천이 큰 비중 차지하고 있다. 한국은행(2009)에서 발표한 지역별 산업 산출액 기준으로도 인천지역의 산출액은 수도권의 12.5%, 전국의 5.5%를 차지하고 있는데, 이중 가구·기타제조업(12.8%), 목재·종이(10.6%) 등은 전국에 비해 상대적으로 높은 비중을 보이고 있다. 본 연구에서는 최근 친환경 저탄소정책으로 다시금 부각되고 있는 천연목재를 기반으로 한 인천지역 목재산업을 육성할 수 있는 대안으로 인천항을 중심으로 한 목재산업 클러스터화를 위한 고찰을 수행하고자 관련 연구 문헌 및 설문 조사를 기반으로 목재산업단지 조성의 필요성과 경제적 파급효과를 제시하고자 한다.