• 한국건설관리학회논문집
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• 제11권6호
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• pp.89-99
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• 2010

군 내무생활관, 독신자 숙소 등은 동일한 평면이 반복되면서 대량으로 건설되는 대표적인 공공건축물이다. 이들 건축물들은 향후 군 구조개편시 부대의 이동, 재편에 따라 건축물의 해체 및 재사용 등이 요구되는 경우도 있다. 이러한 이유로 2005년 이래 군 건축물에 대해 철골조 기반의 공업화 건축공법인 모듈러 공법의 도입이 이루어져 왔다. 군 건축물에 모듈러 공법을 적용함에 있어 가장 중요한 요소는 표준화를 통한 공사비 절감, 건축물의 해체 및 재사용의 용이성 등이나 기존의 모듈러 군시설들은 이러한 요구를 만족시키지 못하였다. 본 연구는 향후 많은 수요가 예측되며 표준화된 모델을 적용하기 용이한 군독신자 숙소를 대상으로 식스-시그마 방법론을 이용한 모듈러 건축 시스템을 제안한다. 식스-시그마방법론을 적용하면 개발 단계에서 고객 요구사항을 주요 설계요소인 CTQ에 반영할 수 있고 이를 기반으로 설계 컨셉의 도출이 가능하다. 분석 결과 공사비 절감은 면적당 골조 중량, 재사용 용이성은 공장제작 비율의 지표로 나타낼 수 있음을 확인하였다. 본 연구에서 제안된 BOQ시스템은 기존의 모듈러 시스템에 비해 공장제작비율은 약 80% 향상되고, 면적당 골조의 중량은 기존 모듈러 시스템에 비해 62% 절감되어 충분한 경쟁력을 가지고 있는 것으로 평가되었다.

• 한국운동역학회지
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• 제14권2호
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• pp.69-83
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• 2004

The purpose of this study is searching for technical merits and demerits of each weight lifting player through qualitative motion analysis system. Moreover, It is also analysis the repeating the establishment of exercise purpose and studying for the effect of the field adaptation. The subject of this study was five male weight lifting players who have been engaged in Korean Delegation Team. The institution of exercise target was made through two times qualitative analysis and the result of studying for the effect of the field adaptation was produced before offering feedback. Moreover, two time analysis added after offering feedback. All analysis was based on 2-D visual analysis. The results of this study are as follows: 1. Maximal barbell moving speed in starting phase was decreased after offering feedback. This result implies advancement of technical skills after offering feedback. 2. From starting posture to 앉아받기, forward and backward moving distance of hip joint was decreased after offering feedback in all subjects. This result represents advancement of technical skills after offering feedback. 3. In terms of pull phase, forward and backward moving distance of hip and shoulder joint was decreased after offering feedback in all subjects. This result represents advancement of technical skills after offering feedback. 4. In terms of pull phase, the difference of horizontal value of coordinates was decreased after offering feedback in all subjects. This result represents advancement of technical skills after offering feedback. 5. In terms of pull phase, the motion range of hip joint was decreased after offering feedback in three of five subjects and this represents advancement of technical skills after offering feedback. However, the rest of them were not variable or narrow decreasing. This result represents that feedback system could not brought tremendous effects. 6. From apex point of barbell to 앉아받기, the difference of barbell height was decreased after offering feedback in three of five subjects and this represents advancement of technical skills after offering feedback. However, the rest of them weren't variable or narrow increasing. This result represents that feedback system could not brought tremendous effects. 7. In terms of last-pull phase, the angular velocity of knee joint was increased after offering feedback in four of five subjects and this represents advancement of technical skills after offering feedback. However, the rest of them, only one subject, decreased. This result represents that feedback system could not brought tremendous effects. 8. In terms of last-pull, the conversional tendency of maximal extension to flextion came out all but simultaneously without offering feedback in four of five subjects. This is well-performed technique. Only one subject, however, could not use power effectively because the fact that his maximal extension came out in serial, from ankle to knee and waist means dispersion of power. In addition to, after offering feedback, only one subject made increasing the maximal extension of knee in last-pull and this result represents advancement of skills after offering feedback. However, the rest of them could not make meaningful development after offering feedback. 9. It might be assumed that searching for technical merits and demerits of each weight lifting player through qualitative motion analysis system could improve player's skill.

• 대한의용생체공학회:의공학회지
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• 제25권6호
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• pp.465-469
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• 2004

본 논문에서는 불안정판(unstable platform)을 이용한 새로운 인체 평형감각 증진용 훈련 시스템을 제안하였다. 본 시스템은 불안정판, 컴퓨터 인터페이스, 다양한 소프트웨어로 구성되어 있다. 불안정판은 기울기 센서와 무선 모듈을 내장한 타원형의 단순한 구조이다. 균형 훈련의 효과를 평가하기 위해 표적으로의 이동시간(moving time to the target)과 표적 내 유지시간(duration time in the target)과 같은 파라미터(parameter)를 측정하였다. 균형 훈련은 2주간 행해졌고, 훈련 프로그램에 따라 피험자를 두 그룹으로 나누었다. 그 결과, sine curve trace (SCT)와 block game의 훈련 프로그램을 이용한 반복적인 훈련을 통해 이동시간은 짧아졌고, 유지시간은 길어졌다 특히, 피험자가 균형을 유지하기 어려웠던 방향에서의 개선이 두드러졌다. 이로써 본 시스템은 훈련 후 피험자의 평형감각을 향상시킬 수 있었고, 효과적인 평형감각 훈련시스템으로써 임상에의 적용 가능성을 확인할 수 있었다.

• 청정기술
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• 제9권2호
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• pp.87-100
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• 2003

본 연구는 청정생산기술의 개념을 염색가공분야에 도입시키기 위한 방법론을 제시한 것이다. 먼저 각 분야별 전문가로 이루어진 진단지도팀을 구성하여 대상업체에서 진행중인 제조공정 진행상태를 파악하고 사용하는 원부자재의 성능 및 환경적 분석과 폐수의 환경적 분석을 실시하였다. 원부자재(조제 및 염료)의 환경성은 TOC, CODMn, CODCr, $BOD_5$의 항목으로 평가하였고, 발생되는 폐수는 TOC, CODMn, CODCr, $BOD_5$, TDS, pH의 항목으로 평가하였다. 또 물질수지 분석과 LCA 평가 후 다음 단계로 공정, 에너지, 원부자재, 생산관리, 일반관리에서의 문제점을 도출한 후 그 중에서 개선 대상을 선정하고 마지막 단계에서 각 부분에 대해 지도하여 개선토록 한 후 최종 개선 효과를 분석하였다.

• 대한기계학회논문집B
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• 제23권8호
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• pp.1048-1062
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• 1999

A numerical method and experiments for the aerodynamic design of high performance two-stage axial flow fans was carried out. A vortex ring element method used for the aerodynamic analysis of the propellers was extended to the fan-duct system. Fan Performance and velocity profiles at the fan inlet and outlet are compared with experimental data for the validations of numerical method. Performance test was done based on KS B 6311(testing methods for turbo-fans and blowers). The velocity profile was obtained using a 5-hole pitot tube by the non-nulling method. The two stage axial flow fan configurations for the optimal operation conditions were set by using the experimental results for the single rotating axial flow fan and the single stage axial flow fan. The single rotating axial flow fan showed relatively low efficiency due to the swirl velocities behind rotor exit which produced pressure losses. In contrast, the single stage and the two-stage axial flow fans showed performance improvements due to the swirl velocity reduction by the stator. The peak efficiency of the two stage axial flow fan was improved by 21% and 6%, compared to the single rotating axial flow fan and the single stage axial flow fan, respectively.

• 한국생활과학회지
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• 제22권2호
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• pp.365-374
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• 2013

The purposes of this study were to evaluate the color characteristics and color sensibility of mulberry/cotton blended fabrics dyed with indigo, the natural dye, and analyze effects of them on color preferences. The values of CIE $L^*$, $a^*$, $b^*$ $C^*$, h were calculated for the color characteristics of indigo-dyed fabrics, and their hue, value, and chroma were calculated according to the Munsell color system. Fifty male and female college students evaluated the color sensibility of nine types fabrics dyed with indigo on a seven-point scale. The data were analyzed by descriptive statistics, factor analysis, Kruscal-Wallis test, correlation analysis, and regression analysis. The mulberry/cotton blended fabrics naturally dyed with indigo showed the characteristics of PB color tones, low value, and low chroma. The color sensibilities of fabrics dyed with indigo were classified into four factors: 'classic', 'sporty', 'elegant' and 'natural'. There were significant differences according to the fibers and the repeating times of dyeing in the color sensibility for the fabrics. Cotton fabrics were evaluated to be more classic, sporty, elegant, and natural than the mulberry/cotton blended fabrics, and the deeper the color, the more classic, sporty, and elegant the fabric was evaluated. The students preferred the indigo dyed fabrics which have more classic, sporty, and natural sensibility. There were significant relationships between the color sensibilities and colorimetric properties of the fabrics dyed with indigo. The color preferences of the dyed fabrics with indigo were found to be influenced by the 'classic', 'sporty', 'natural' of color sensibility.

• 한국진공학회지
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• 제15권3호
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• pp.314-324
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• 2006

KSTAR ICRF 안테나의 진공특성을 실험적으로 조사하였다. 제작된 안테나를 총 유효배기속도 1015 l/s의 진공펌프가 장착된 시험용 진공용기에 설치하였으며, 고주파 시험하기 전에 시간에 따른 압력 변화, 총기체 부하, 도달 진공도 등을 측정하였다. 낮은 출력의 고주파를 반복적으로 인가함으로서 세정 효과를 확인하였다. 안테나에 고주파를 인가하여 시험하는 동안 진공도 변화를 측정하였으며, 압력 상승에 의해 방전이 유발되는 한계 압력을 조사하였다. 본 안테나의 경우 고주파 인가 중에 진공용기의 압력이 $10^{-4}$ mbar 이상이 되면 방전이 일어났다. 장펄스 시험에서 안테나의 온도와 시험용 진공용기의 압력을 측정하여 안테나를 냉각하지 않은 상태에서 운전이 가능한 전압을 조사하였으며, 냉각했을 때의 결과와 비교하였다.

• 정보처리학회논문지A
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• 제9A권3호
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• pp.371-378
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• 2002

EMFG(Extended Mark Flow Graph)는 이산시스템을 표현하는데 유용한 그래프 도구로 알려져 있다. 본 연구에서는 EMFG에서 각 트랜지션이 점화하였을 때의 입출력 박스의 마크 변화량을 입출력 행렬로 표현하였고, 이를 사용하여 EMFG의 접속행렬을 구하였다. 점화가능벡터를 구하기 위하여 각 트랜지션의 점화조건을 점화조건행렬로 표현하였으며, 각 트랜지션의 점화완료 상태를 판단하기 위하여 점화완료벡터를 도입하였다. 이들을 사용하여 EMFG의 모든 동작과정이 수학적으로 해석될 수 있도록 EMFG의 동작해석 알고리즘을 개선하였다. 제안된 알고리즘을 정회전과 역회전을 반복하는 시스템에 적용하여 알고리즘이 올바르게 동작하는 것을 확인하였다. 제안된 알고리즘은 다양한 이산 시스템을 분석하는데 유용하다.

• 한국의류학회지
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• 제18권4호
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• pp.549-559
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• 1994

The purpose of this study was to study accumlated residual soils which may be one of the causes for yellowing of worn cloths. Wear and wash tests of white cotton undershirts were repeated at 30 households sellected at random over a period of 60 days. Laundry conditions were similar to home laundry habits in a fact-finding survey, using a powdery heavy duty detergent containing no enzymes or enzymes. The subjects in this study were survey of laundry actual condition, the undershirts from prior to and after the final washing was measured residual soils, $L^*a^*b^*$ value and mellowness index of CIE system. D3ta were analysed by simple correlation analysis of wear and wash cycle, residual soils, whiteness The results obtained were summarized as follows: 1. Using pattern of washing machine, Presoaking was no singinificant differnece in general characteristics of survey respondent. Laundry frequency was significant difference in income level, occupation of housewives whether or not. Use of cold and hot water was significant difference in residence shape. 2. The analyzed consequences of recognition and actual behavior in connection with laundry were found variables each other to have independence or not. 3. Amount of residual sebum soils is using non-enzyme detergent were much more than in using enzyme detergent, increased linearly with increase of the number of wear and wash cycles. 4. Residual protein soils with increase of the number wear and wash cycles less than in laundering more easy than sebum soils. Since accumulated residual sebum soils were much more than residual protein soils. 5. Increase of residual soils was raised mellowness index and diminshed whiteness. yellowness index of residual sebum soils was higher than protein soils. If increase of whiteness will be incresed, amount of residual sebum soils will be decreased sebum soils. Because amount of residual sebum soils much more than protein soils, yellowness index of residual sebum soils was more higher than that of protein soils.

• Biotechnology and Bioprocess Engineering:BBE
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• 제7권2호
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• pp.67-75
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• 2002

The human complement receptor type 1 (CR 1, C3 b/C4b receptor) is a polymorphic membrane glycoprotein expressed on human erythrocytes, peripheral leukocytes, plasma and renal glomerular podocytes, which consists of transmembrane and cytoplasmic domains with 30 repeating homologous protein domains known as short consensus repeats (SCR). CR1 has been used as an inhibitor for inflammatory and immune system for the past several years. Recently; it is reported that CRl was found to suppress the hyper-acute rejection in xeno-transplantation and can be used to cure autoimmune diseases. A soluble form of CRl, called sCRl, is a recombinant CRl by cleaving the transmembrane domain at C-terminus and has been expressed in Chinese Hamster Ovary (CHO) cells. Several purification methods for sCR1 from CHO cells have been reported, but most of them require complicated steps at high cost. Moreover, such methods are mostly performed under the pH condition apt to denaturing sCR1 and causes sCRl losing its activity. We here report a rapid and efficient method to purify sCR1 from CHO cell. The new method consists of a two-stage of cell culture by cultivating cells in serum medium followed by serum-free medium, and a two-stage of column purification by means of heparin and gel filtration column chromatography. By using this novel method, sCR1 can be purified in a simple and effective way with high yield and purity, furthermore, the purified sCR1 was confirmed to retain its activity to suppress the complement activation in vivo and ex vivo.