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개별 난방방식에서의 배관 내 절정 유량 및 압력유지에 관한 연구
홍석진,류성룡,석호태,여명석,김광우,Hong Seok-Jin,Ryu Seong-Ryong,Seok Ho-Tae,Yeo Myoung-Souk,Kim Kwang-Woo 한국주거학회 2006 한국주거학회 논문집 Vol.17 No.2
For the more comfortable thermal environment in residential buildings, it was necessary for variable components like as automatic flow limiting valves and/or balancing valves in hydronic system. And, these components had an effect on flow-rate and pressure inside pipe. In this case, the incompatibility between the design for the heating system and the selection of equipment was the causes of several problems in heating pipe network. In this study, we peformed measurements and analyses of flow rate and pressure inside pipe for radiant floor heating in residential buildings through field surveys and experiments in order to find out the actual conditions and problems. On the basis of this, we suggested the approach for the optimal flow-rate and pressure maintaining inside pipe in individual heating system.
비전형적인 임상 양상을 보인 호산구성 농포성 모낭염 4예
홍석진,김삼형,강훈,손숙자 ( Seok Jin Hong,Sam Hyeong Kim,Hoon Kang,Sook Ja Son ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.6
We report three cases of u.iiusual eosinophilic pustular folliculit is whose initial manifestation is indurated plaque rather than papule and pustule and one case of eosinophilic pustular folliculitis was found in an infant. None of the adult patients in these cases complained of any suhjective syrnptoms other t.han the skin lesion, but an itching sensation might be present in the case of the infant. In laborat ory test, eos nophilia was observed in only one case and any other abnormal results were not observed. In all cases, histopathologic study revealed numerous eosinophilic infil tration around the follicles ext.i nding to the periappendageal and perivacscular area, that is consistent with the finfings of eosinophilic pustuar folliculitis. All adult patients relatively responded well to dapsone and topical stroid and the infant patient resporided well to topical steroids, But they had a chronic course with remission and exacerhation (Korean J Dermatol 1997;35(6): 1244-1249)
비특이적 임상 소견을 보인 Gianotti - Crosti 증후군
홍석진,김삼형,강훈,손숙자 ( Seok Jin Hong,Sam Hyeong Kim,Hoon Kang,Sook Ja Son ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.4
We report herein a case of Gianotti-Crosti syndrome showing unusual features. A 12-month-old male patient presented with papular skin lesions on his face and papulovesicular skin lesions on the trunk, upper and lower extremities, which were distributed symmetrically. Three days before the skin eruptions, he had been immunized with a measles vaccination. Serologically, antigens of the type B hepatitis virus and antibodies to coxsackie virus B-4, Epstein-Barr virus, and varicella-zoster virus were all negative and antibodies to the measles virus (IgG, IgM) and the type B hepatitis virus were positive. After conservative treatment the skin lesions subsided with exfoliation within 4 weeks. An association with the measles vaccination and the initial papulovesicular skin lesions are considered as peculiar features of this case. (Kor J Dermatol 1997;35(4): 830-834)
Rasch 평정척도 모형을 적용한 초등학생 수상 안전의식 측정척도 개발 및 타당화
홍석진(Hong, Seok-Jin),김세형(Kim, Sae-Hyung) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.4
The purpose of this study was to develop and validate of water safety awareness scale for elementary school students using Rasch rating scale model. Establishing content and face validity, 30-item and 4-point rating scale were generated. The scale was administered to 516 elementary school students. The Rasch measurement computer program, WINSTEPS was used to analyze the data. Model fit was decided by Infit and Outfit index (≥.60 and ≤1.40). The results provided that the four-point rating scale was appropriated that the conditional probability curve and the step calibration index increased step by step (-.80〈-.12〈.92). The 8-item of the 30 items were selected as the DIF between gender, and the one item had over standard item fit (infit=1.18, outfit=1.41). The results indicated that 21 items were finally selected as the water safety awareness scale for elementary school students. To calibrate the evidence of validity, structural aspect of validity and the generalizability aspect of validity were utilized. The scale was verified unidimensionality using Rasch principal component analysis. The person & item reliability index (≥.80) and the person & item separation index (≥2.00) were functioned well and person & item strata index showed different step index. This study developed the water safety awareness scale for elementary school students that constructed 21-item and 4-point rating scale. In addition, the newly constructed this scale for elementary school students should be validated to increase external validity.
홍석진(Hong Seok-Jin),성기철(Sung Ki-Chul),김지현(Kim Ji-Hyun) 한국건축친환경설비학회 2010 한국건축친환경설비학회 논문집 Vol.4 No.3
Various construction method were applied to prevent the condensation on the wall and floor of under ground space in apartment buildings. However the surface condensation is not prevented completely, it is caused by high percentage of relative humidity. The result of field measuring, the relative humidity of underground space reached on 99%. In this case, it is necessary to apply the humidity control method for preventing condensation. In this study, we considered using the inorganic finishing material that consists of cement, water and admixture like concrete as humidity control method. Also we considered dehumidifying system that could be applied to stair case and elevator hall of underground. To evaluate the humidity control capability of inorganic materials and the dehumidifying system, we performed the field test on underground space in apartment buildings. As a result, the permeability of inorganic materials that applied to the wall and floor is useful to prevent the condensation of underground space. In small space such as stair case and elevator hall, applying dehumidification equipment is more useful. Also blowing dehumidified air from stair case to parking area can decrease the humidity of underground parking space.