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석인호,서재웅,강한주,김양택,현창택 대한건축학회 2000 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.20 No.2
With unclear provisions about reconstruction permits in the Housing Construction Promotion Act, its poor evaluation process resulted in widespread unreasonable reconstructions. furthermore even instigated public extravagancies and other serious social problems. So, it is urgently required to establish objective reconstruction evaluation criteria and attributes to improve current reconstruction process. Through expert interviews in each specific fields, quantitatively measurable criteria and attributes which are required in determining reconstruction were selected in terms of performances of residential buildings. The chosen criteria and attributes were applied to apartment housing which received reconstruction permits using existing criteria to validate its applicability.
김재원(J.W. Kim),석인호(I.H. Seok) 한국전산유체공학회 2009 한국전산유체공학회 학술대회논문집 Vol.2009 No.4
Traditional vacuum cleaner adoptsa highly rotating centrifugal impeller for generating suction region at lower pressure. The rotational speed is very high at 35,000 to 40,000 rpm and accessory structure such as a circular brush at the base plate of the cleaning devices is equipped for gathering dusts. Highly rotating impeller is effective for low pressure generation but causes noise problems. Recently, the unwanted noise is removed by installation of air-pump, instead of a centrifugal impeller, and the internal flows of the modified system are estimated in numerical and experimental approach, respectively.