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건축공사시방서에서의 KS규격의 국제인증방안에 관한 연구
김경식,이재섭,김용수,이규진,조용훈,최완철,전재열,이현수,구재동,이기환 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
The purpose of this research is make out construction specifications for International Construction. Using off-shore products incur cost increase and longer delivery term of construction. and inconvenient on International Construction. Expand the range of additional local products conforming to performance. Life Cycle Cost. maintainability. operability. user's acceptability, etc.. And this study is suggest the standard formats and the techniques for construction specification.
傾斜地 테라스하우스에서 유형과 경사각도에 따른 密度에 관한 硏究
최규학,이재훈 대한건축학회 2004 대한건축학회논문집 Vol.20 No.10
This study analyzes the dwelling-density through house units-type and the slope-angle from the terrace house complex on slope-site The results are summarized as follows 1) The increase of the floor area ratio concerns with the slope-angle of the site In low slope-angle, it has little difference between combination type, but the more the site incline the more the difference increase In same size of building area, slope-angle and combination-type, floor area ratio of the compact '-' units-type increase more maximum 25%, compared with the 'ㄱ' units-type 2) The building coverage subordinate to the combination-type, the selected units-type and combination-type turn up almost regularly in all inclination 3) The open space ratio per floor area influenced by the slope-angle of the site Inclining, the open space ratio per floor area decreases and so the open space of the house unit, too It is shown, that the difference between types in low inclined slope-sites are bigger than the ones in high inclined slope-sites
서정,이제훈,강희신,김정오,이문용,오상진,이규현 한국레이저가공학회 2003 한국레이저가공학회지 Vol.6 No.2
Defocused CO_2 laser beam irradiation strengthening of 60kgf/㎟ grade steel sheet was investigated to obtain the tensile strength similar to that of fully penetrated one by the focused beam. The melted line width by the defocused beam was 3∼4 times larger compared to that of the focused beam. However, the increase of tensile strength with 1 line irradiation by the defocused beam was similar to that of 2∼3 lines by the focused beam. The increase(37.6%) of bending strength with 1 line by the defocused beam was higher than the increase(12.9%) of tensile strength. Also, the effect of cooling gas to strengthening was observed.
다발성 간종괴의 형태로 나타난 특발성 과호산구 증후군 치험1예
최승오,연규민,이승민,김순제,왕준호,박형석,이재동,진춘조,이창훈,신현준,김정은 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-
Hypereosinophilic syndrome is characterized by persistent blood eosinophilia of 1,500/ul or more in the absence of known causes and multiorgan dysfunction by eosinophil-related tissue damage. In Korea, some cases of hypereosinophilic syndrome with hepatic involvement have been described with prolonged benign clinical courses. Most of them were diffuse or multifocal lesions in imaging studies, and a few case presenting as a single mass has been described. Here we report a case of hypereosinophilic syndrome with hepatic involvement in a 65-year-old man who presented with multifocal mass lesions. By abdominal US and CT scan, multiple, ill-defined nodules were detected in throughout the liver. Liver biopsy revealed severe eosinophilic hepatitis, suggestive of hypereosinophilic syndrome. Hepatic mass lesions improved after steroid administration for several weeks.
조기강도 발현형 AE감수제를 사용한 콘크리트의 특성에 관한 연구
황인성,김규동,이승훈,한천구 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
This study discusses the fundamental properties and early strength development of concrete using AE water reducing agent of early-strength type. According to the result, when AE water reducing agent of early-strength type is used, slump and air content loss is smaller than normal AE water reducing agent. While setting time is retarded with an increase of the adding amount of normal AE water reducing agent, it is maintained constantly regardless of the adding amount and faster than normal AE water reducing agent in the case of AE water reducing agent of early-strength type, and bleeding amount is larger than normal AE water reducing agent especially at early age. At curing temperature of 20℃, early compressive strength gains 5MPa, which side form can be removed, before 16 hours in the case of AE water reducing agent of early-strength type, but early compressive strength development is delayed in the case of normal AE water reducing agent. At curing temperature of 10℃, AE water reducing agent of early-strength type is also better than normal AE water reducing agent especially for early compressive strength development.
들기자세 유형별 L₄-L?의 근전도 분석 : At the Base Knee Angle 무릎각도를 중심으로
서국웅,노석규,윤양진,정미라,이훈식,박승범 釜山大學校 附設 體育科學硏究所 1998 體育科學硏究所 論文集 Vol.14 No.-
This research is to find out the most suitable lifting posture and to provide fundamental data for preventing usual injuries. To do this, we select five male graduates and five female graduates of P university, analyze their muscular actions in terms of posture types, measure the limit value of weight lifting by comparing each lifting posture type(knee angle 40˚, 80˚, 180˚) with action amplitudes of two parts of erector spinae muscle, and draw our conclusion as follow ; 1. In case of every lifting posture(that is, knee angle 40˚, 80˚, 180˚), females have higher muscular conductivity value in L⁴-L? of right erector spinae muscle than males(p<.001), but in L⁴-L? of left erector spinae males has higher muscular conductivity value than females(p<.001). 2. Males show lower degree of change in muscular conductivity value from 10kg to 25kg weight lifting. 3. Females show gradually increasing degree of change in muscular conductivity value according as weight lifting is heavier. 4. Males show the constant muscular conductivity action of average 50∼110㎶ in the L⁴-L? in case of each lifting posture, knee angle 40˚, 80˚, and 180˚. 5. Females also show the constant muscular conductivity action of average 100∼200㎶ in the L⁴-L? in case of each lifting posture, knee angle 40˚, 80˚, and 180˚. But they show more active muscular conductivity in more than 15kg weight lifting, IOSHIC permission load value. In short, in case of males, weight lifting up to 25kg has little effect on erector spinae muscle but in case of females, weight lifting from more than 15kg has gradual effect on erector spinae muscle. Therefore, the muscular conductivity values of various posture types(by knee angle)are to be identified according to weight lifting steps.
시멘트 제조사 및 W/C 변화에 따른 콘크리트의 초기 강도발현 특성
金光華,裵正烈,김규도,이승훈,한천구 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
This study is to investigate the influence of cement manufacturing company and W/C on the properties of fresh concrete, strength of hardened concrete and rebound value of P type Schmidt hammer. According to the result, setting time of concrete is shortened with and increase of W/C, and when cement made in A and B corporation is used in concrete, the final setting time is measured at about 10 hours and 13 hours. Compressive strength increases with elapse of time and decrease of W/C, and concrete using cement made in A corporation shows higher compressive strength and rebound value until 24 hours, but from 3rd day, the contrary tendency is shown. As for the properties of early strength, the strength develop fast with decrease of W/C, and the time when compressive strength of 5MPa is gained and the form can be removed, is about 15, 18, 21 hours and 20, 22, 27 hours at the W/C 40, 45, 50% in concrete using cement made in A and B Co. respectively. The correlativity between compressive strength and the rebound value, which a coefficient of correlation is over 0.97, is very favorable. Therefore this method is effective to estimate the strength of removing the form.