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홍원표(Won Pyo Hong),류정인(Jeong In Ryu) 대한공업교육학회 1980 대한공업교육학회지 Vol.5 No.1
National technical qualification testing system of the technical high school and the technical college graduates has been carried out since 1975 in Korea. This enforced system was served as the betterment of actual training and the extension of the workshop equipment in the technical high school and the technical college. But this system gave rise to the difficulties of regular management of the technical high school and college education, for it cause the neglect of the normal curriculum management in the excess of concentrating on skill practice. In order to study the effective management of national technical qualification testing system, We have analyzed the reason through many questionaires to technical college proffessor, and technical high school teacher, technical manager, technican and engineers in industry. The general plans studied for the effective management of national technical qualification testing system are as follows, 1) National technical qualification testing system should be analyzed relating duty of industrial society to do official endorsement. 2) National technical qualification testing system should be conduct by the industrial organization such as the Gild Association in United Kingdom. 3) National technical qualfication testing system should be consist of industrial construction analyzing committee.
Preisach 모델을 활용한 히스테리시스 모델링의 보간 기법
이정종(Jeong-Jong Lee),김영균(Young-Kyoun Kim),정인성(In-Soung Jung),채승희(Seung-Hee Chai),홍정표(Jung-Pyo Hong) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.10
This paper proposes a new interpolation method of hysteresis behaviour of soft magnetic material. Hysteresis model uses the tested result on Preisach model as Everett density. But, the tested Preisach density result is not adapt in some area of hysteresis plane because the Preisach model is consist of discontinuous distribution model. In oder to express in middle position of Preisach model, it is needs the interpolation function. In this paper, we propose new interpolation function to use hysteresis loop using Preisach model.
자동차 천정 성형 공장에서 발생한 Methylenediphenyl Isocyanate에 의한 직업성 천식 2예
양주연 ( Ju Yeon Yang ),정인국 ( In Kook Jeong ),임상수 ( Sang Su Lim ),홍구현 ( Gu Hyun Hong ),신재민 ( Jae Min Shin ),노상철 ( Sang Chul Rho ),김윤섭 ( Youn Seup Kim ),박재석 ( Jae Seuk Park ),지영구 ( Young Koo Jee ) 대한천식알레르기학회 2006 천식 및 알레르기 Vol.26 No.4
Since isocyanate-induced occupational asthma (OA) was first reported about 50 years ago, the first case of methylenediphenyl isocyanate (MDI)-induced OA was reported in 1973. Although toluene diisocyanate (TDI)-induced OA is the most common OA, MDI-induced asthma has been very rarely reported in Korea. Here we report two cases of MDI-induced OA developed in the molding lining of automobile industry. Two patients who had worked at the molding lining using MDI for several years presented with cough and dyspnea. The metacholine bronchial provocation tests of two patients were positive (PC20 : 1.51 mg/mL and PC20 : 1.28 mg/mL, respectively). The bronchial provocation tests with MDI showed early response. MDI aerosol was generated by heating MDI to 100℃ with heat block. Skin prick tests were all negative to common inhalent allergens and MDI. The level of serum total IgE was within the normal range. They are now well-controlled state with persistent medication and changes of working place in the same company. (Korean J Asthma Allergy Clin Immunol 2006;26:314-317)