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유창희(Changhee Yoo) 대한비뇨기종양학회 2014 대한비뇨기종양학회지 Vol.12 No.3
To improve detection rate of prostate cancer in prostate biopsy, it is important to select proper location and the number of biopsy cores. In many previous studies, various biopsy schemes have been suggested to increase biopsy efficacy. However, the most widely used current biopsy scheme still has some limitations, so that further studies are needed. Currently, 12-14 core extended biopsy has been proved to be more efficacious than standard 6 core biopsy as initial biopsy scheme. For more meticulous re-biopsy, clinically important locations which were not included in initial biopsy, such as anterior fibromuscular zone or transition zone, should be covered as well as enough number of biopsy cores. Image guided prostate biopsy considered to be helpful for improving diagnosis efficacy. However, it needs more clinical experience to be popular.
중산층 노인대상 식품안전·영양관리 교육 사업 평가를 위한 도구 개발
장혜자(Chang, Hyeja),유효이(Yoo, Hyoi),정하림(Chung, Harim),이혜상(Lee, Hyesang),이민준(Lee, Minjune),이경은(Lee, Kyungeun),유창희(Yoo, Changhee),최정화(Choi, Junghwa),이나영(Lee, Nayoung),곽동경(Kwak, Tongkyung) 한국영양학회 2015 Journal of Nutrition and Health Vol.48 No.6
우리나라가 고령화 사회에 진입함에 따라 노인 의료비 부담이 증가하고 있으며, 질병을 예방하고 건강 수명을 연장하기 위해서는 공적 사업의 일환으로 식품안전·영양관리 프로그램을 개발하고 이를 효과적으로 실행하는 방안이 마련되어야 한다. 본 연구는 균형성과표 (BSC: balanced score card) 개념을 적용하여 내용적으로는 고객관점, 재무관점, 학습과 성장, 내부 프로세스 관점에서 평가지표를 추출하였고, 형식면에서는 성과측면, 과정측면, 구조측면으로 구분하여 노인대상 식품안전 영양관리 교육 프로그램을 평가하는 도구를 개발하였다. 노인 대상교육 프로그램 평가도구의 초안을 개발하고, 이를 설문지로 전환하여 전문가 집단에게 평가지표에 대한 타당성 평가를 의뢰하였다. 평가지표에 대한 적합성은 1, 2차 결과를 토대로 ‘그렇다 (4점)’, ‘매우 그렇다’ (5점)를 선정한 전문가의 빈도 (백분율)가 75% 이상, 평균점수 3.8점 이상인 지표로 선별하였다. 델파이 그룹은 학계 전문가 26명, 중앙정부기관 16명, 지역사회 운영기관 24명으로 총 66인으로 구성하였다. 1차, 2차 평가에 모두 참여한 전문가는 총 32명의 의견을 토대로 프로그램의 평가도구를 ‘성과측면’ 28문항, ‘과정측면’ 9문항, ‘구조측면’ 17문항으로 최종적으로 완성하였다. 배점은 성과지표 50점, 과정지표 20점, 구조지표 30점으로 구성된다. 노인 대상 식품안전·영양관리 교육서비스 확산을 위해서는 효과적으로 평가할 수 있는 평가 도구의 구비가 선행되어야 한다. 본 연구에서 개발한 평가 도구를 활용한다면, 노인대상으로 식품안전 및 영양관리 교육프로그램 사업을 효과적으로 실행하는지를 평가할 수 있으며, 프로그램을 가장 효율적, 효과적으로 전달할 수 있는 경로를 탐색하는데 도움이 될 것으로 기대된다. Purpose: The aim of this study is to develop an evaluation tool for operation of food safety and nutrition education projects for middle class elderly using the concept of the balanced score card. Methods: After the draft of the evaluation tool for the elderly training projects was completed, it was revised into the questionnaire and the validity of the indicators was tested by the Delphi group. The validity of the indicators was rated using a 5-point scale. The Delphi group consisted of 26 experts in the education sector, 16 government officials, and 24 professionals of the related area in communities. The first round test was conducted from July 9 to July 17, 2012, and 45 persons responded. The second round test was conducted from July 18 to July 25 and 32 persons responded. Results: The indicators, which were answered by more than 75 percent of the experts as ‘agree’ (4 points), ‘strongly agree’ (5 point) were included as the final indicators for the evaluation tool: 28 items out of 36 in outcome perspectives, 9 items out of 12 in process perspectives, and 17 out of 20 items in structure perspectives. The score was allocated as 50 points for outcome indicators, 20 points for process indicators, and 30 points for structure indicators. Conclusion: Completion of the evaluation tool is a prerequisite to determine whether the program is effectively implemented. The monitoring tool developed in the study could be applied for identification of the most optimal delivery path for the food safety and nutrition education program, for the spread of the food safety and nutrition education program for middle class elderly.
대형 상용차 열크랙 성능 향상을 위한 디스크의 온도 특성 예측
박은지(Eunji Park),남찬혁(Chanhyuk Nam),김진평,최승규,김성훈(Sunghoon Kim),유창희(Changhee Yoo) 한국자동차공학회 2022 한국자동차공학회 부문종합 학술대회 Vol.2022 No.6
A vehicles brake is a system for decelerating or stopping the vehicle while driving by using the friction force between the disc and the pad, and is related to the safety of the vehicle. When braking, the disc generates torque and heat due to friction with the brake and pads. Excessive heat generated from this creates thermal cracks in the disc and lowers the durability of the disc, so verification of thermal characteristics is absolutely necessary in disc development. Since thermo-mechanical properties of the disc and pad thermal properties, friction, shape, and contact pressure must be considered together, there are limitations in predicting general heat transfer analysis. So analysis using fully coupled thermo-mechanical analysis method required to predict the temperature characteristics for disc. In this paper, the temperature prediction analysis model of the disc based on the SAE J3080 test method was constructed using the fully coupled thermo-mechanical analysis method. Through this, the temperature characteristics of the disc caused by friction between the disc and the pad were predicted.