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CAD/CAM/CAE/PDM 시스템을 이용한 F-125차량의 개발 (1) -제품 기획 및 PDM 시스템 구축 -
이해철(Hae Chul Lee),이상헌(Sang Hun Lee) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper describes the process of product planning for a F-125 machine, which is an on-road racing car equiped with an 125cc motorcycle engine. To determine the product specification, our former machines, competitive machines, regulations of the AARK F-125 Grand Prix were investigated, and requests of racers were collected and reflected. In the early design stage, an ergonomics approach was introduced for design of a cockpit. A driver was measured and modeled using the human module of CATIA V.5. This manequine model was used to analyze driver's view range, size of seat, positions of steering wheel and pedals. In addition, a PDM system was established on the basis of TeamPDM, and used for management of product data generated mainly using CATIA V.5. Introduction of a PDM system facilitated sharing product and design information systematically between product developers.
아시아인의 얼굴색 변화와 인지도간 상관성 비교 : 한국인, 인도네시아인, 베트남인
정유철 ( Yu Chul Jung ),이명렬 ( Meoung Ryul Lee ),김은주 ( Eun Joo Kim ),조준철 ( Jun Cheol Cho ),이해광 ( Hae Kwang Lee ) 대한화장품학회 2013 대한화장품학회지 Vol.39 No.4
수분량, 유분량, 피부밝기, pH 등 피부 특성을 나타내는 지표들은 환경적, 유전적 요소에 따라 다르게 나타난다. 하지만 이는 절대적인 피부 특성을 나타내는 것으로 사람들이 느끼는 감성적인 피부 특성과는 차이가 있다. 이를 반영하듯 최근 임상 연구들은 절대적인 피부 변화를 통한 사람들의 인지 변화에 관한 연구들이 주를 이루고 있다. 본 연구에서는 아시아인을 대상으로 국가별로 절대적인 피부색의 차이 뿐 아니라 실제 피부색의 변화에 따라 본인들이 인지하는 피부 밝기에도 차이가 있는지를 규명하고자 하였다. 아시아 3개국 총 410명의 피험자들이 본 연구에 참여하였으며 설문을 통해 본인들이 생각하는 피부밝기를 3단계로 구분하여 응답하고 본인이 생각하는 피부 밝기 변화에 따라 실제 피부색은 어떤 양상으로 변화하는지를 분석하였다. 국적에 관계 없이 모든 참가자들이 공통적으로 피부색이 밝다고 느낄수록 실제 피부 밝기는 증가하는 양상을 보였지만 절대적인 피부색과 피부가 밝다고 느끼는 정도는 차이가 있었다. 게다가, 피부 붉은기와 노란기의 변화도 국가별로 다른 양상을 보였다. 결론적으로, 본 연구 결과에 근거하여 판단 할 때 본인들의 피부 밝기를 인지하는 요소는 절대적인 피부 밝기가 아닌 국가별로 다른 기준이 적용된다는 것을 확인할 수 있었다. Various indicators representing skin characteristics such as skin hydration, sebum excretion rate, lightness, and pH are different depending on environmental and genetic factors. However, they are absolute skin indicators and are different from skin characteristics that a person recognizes. Based on this fact, many recent studies have been mainly conducting researches on perspective changes according to changes of absolute skin. This study was proposed not only to find out differences on skin colors of asian by nations, but also to find out whether there was any difference in skin brightness they perceive depending on actual skin color changing. As many as 410 subjects of three Asia nations were participated in this study, and investigated their responses on skin brightness using questionnaire, which was answered their skin color in three different levels. It was also were analyzed how actual skin brightness were changed depending on their perceived skin color changes of subjects. There was a trend showing that the brightness of the actual skin color was increased when participants felt their skin color got brighter regardless of their nationalities. However, there were some differences in color between perceived color and actual color. In addition, there was a different aspect by nations in changes of skin redness and skin yellowness. In conclusion, it was revealed that factors which help people to perceive their own skin brightness were not based on absolute skin brightness, but on different criteria depending on where they are from.
중추신경흥분성 식욕억제제 사용의 부작용에 관한 신속 체계적 문헌고찰 : 의존 및 정신병 중심으로
조선진(Sun-Jin Jo),이해국(Hae Kook Lee),박병주(Byung-Joo Park),강훈철(Hoon-Chul Kang),이승엽(Seung-Yup Lee),조중범(Joong-Bum Jo) 한국중독정신의학회 2021 중독정신의학 Vol.25 No.2
Objectives: Although psychostimulants for suppressing appetite have indications for a short-term use, long-term prescriptions are also frequently encountered in clinical practice. The objective of this study was to overview the empirical evidence on the safety of such psychostimulants. Methods : A rapid systematic review was conducted using existing systematic review articles or clinical guidelines developed by adopting systematic review methodology. Results : Four systematic review articles or clinical guidelines were reviewed. Studies on the safety of diethylpropion were all short-term. Six case reports reported psychotic symptoms. Phentermine, phendimetrazine, and diethylpropion have been withdrawn in most countries due to their side effects such as drug abuse and cardiotoxicity. Long-term prescription safety for phentermine or diethylpropion was not addressed in existing clinical guidelines for pharmacological management of adult obesity. Moreover, studies on the efficacy and safety of psychostimulants in the childhood and adolescence obesity management have not been reported yet. Conclusion : The number of studies on the long-term safety of antiobesity psychostimulants prescriptions was too limited to conclude their efficacy and safety for long-term use. Thus, long-term prescriptions of antiobesity psychostimulants should be avoided and closer monitoring is needed even for short-term use of psychostimulants in subjects with mental health risk.
[연료 및 윤활유부문] 4사이클 엔진 배기시스템의 소음저감 성능에 관한 실험적 연구
송창훈(Chang-hoon Song),이해철(Hae-Chul Lee),윤준규(Jun-Kyu Yoon),차경옥(Kyung-Ok Cha) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In vehicle exhaust systems the sound attenuation and the reduction of flow losses are often two competing demands. The present study considers a fully vehicle exhaust system and investigates experimentally both the sound attenuation and the flow performance of production configurations including the catalyst, the resonator, and the muffler. Dynamometer experiments have been conducted with 1500cc engine with speeds ranging from 1000 to 5000 rpm, Measurements include the flow rates, the temperatures and the absolute dynamic pressures of the hot exhaust gases at point locations. The present study describes the experimental aspects of an ongoing effort to validate and use the nonlinear fluid dynamic models in the time-domain for the prediction of the acoustic and power performance of firing internal combustion engines with full production exhaust systems
당뇨병이 합병된 임신에서의 모체 및 주산기 합병증의 발생에 대한 임상적 연구
백은정(Eun Jeong Baik),김사진(Sa Jin Kim),이귀세라(Gui Se Ra Lee),신종철(Jong Chul Shin),김은중(Eun Jung Kim),김수평(Soo Pyung Kim),노승혜(Seung Hye Rho),이해남(Hae Nam Lee),강병채(Byung Chae Kang),심상인(Sang In Shim),이초희(Cho Hee 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.12
Objectives: The aim of the current paper is to analyze maternal and neonatal complication of pregestational diabetes mellitus and gestational diabetes mellitus, and to compare with the outcome Method: The study included 108 pregnancies with diabetes mellitus among 8,495 admitted to the Department of Obstetrics and Gynecology, Catholic University of Korea Medical College, Holy Family Hospital from January 1, 1995 to December 31, 1998. The pregnancies were divided into pregestational diabetes mellitus group and gestational diabetes mellitus group. The data were analyzed and reviewed retrospectively based on medical records Results: 1) Incidence of maternal complication in gestational diabetes mellitus was 7% of pregnancy induced hypertension, 3% of pyelonephritis, 1% of retinopathy and 1% of chronic hypertension. In case of pregestational diabetes mellitus, 18% of pregnancy induced hypertension, 5% of nephropathy, 9% of retinopathy and 14% of pyelonephritis. 2) Incidence of neonatal complication in gestational diabetes mellitus was 1% of congenital malformation, 1% of shoulder dystorcia, 7.3% of polyhydramnios, 17.7% of hyperbilirubinemia, 40.6% of hypoglycemia and 1% of FDIU. In case of pregestaional diabetes mellitus, 1% of congenital malformation, 18.2% of polyhydramnios, 22.7% of hyperbilirubinemia, 27.3% of hypoglycemia, 18.6% of RDS and 4.6% of FDIU. 3) The outcomes of the treatment of pregestational diabetes; There was no significant difference in the maternal weight gain, neonatal birth wight but the incidence rates of neonatal complication was lower in case of insulin treatment 4) The outcomes of the treatment of gestational diabetes; There was significant difference in the maternal weight gain, neonatal birth weight and the incidence rates of maternal and neonatal complication was decreased in case of treatment. Conclusion: Incidence of maternal complication and perinatal complication was higher in pregestaional diabetes mellitus compared with gestational diabetes mellitus, so strict control of blood glucose level and education for diabetes mellitus were essential before gestation. And the proper treatment of gestational DM was necessary because maternal weight gain during pregnancy, neonatal birth weight and the maternal and neonatal complication were affected by treatment.