http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
시멘트 종류별 콘크리트의 적산온도에 의한 강도예측에 관한 연구
장종호,나철성,김재환,김용로,길배수,남재현,김무한 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
The purpose of this study is to exhibit fundamental data which can apply to quality and process management of structure concrete using special cement in the construction field investigating strength prediction by maturity method of concrete according to cement types. The activation energy value was derived from the experimental study that experimental factors were selected as W/C ratio of 45%, the kinds of cements of 3 levels of O.P.C, H.B.C, H.S.C and curing temperature of 3 levels of 5℃, 20℃, 35℃. Also, after investigating relationship between compression strength and equivalent ages of concrete according to cement types, the strength prediction was investigated by maturity method. As the above of results, differences between the prediction strength by strength prediction equation and the actual measurement strength were lower, therefore it is considered that the strength prediction by maturity method is possible not only concrete using normal portland cement but also concrete using special cement.
공간벡터 PWM의 과변조 영역에서 출력전압 선형화에 관한 연구
배장호,김연충,원충연 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.1
This paper proposes a linearization technique for the space vector modulation method, which increases the linear control range of inverter up to the 6-step inverter. This method is based on fourier series expansion of the desired output voltage of the inverter to calculate the compensation angle in continuous switching mode and holding angle in discontinuous switching including the 6-step mode respectively. The numerical data of these angles which are used for compensation of fundamental voltage in overmodulation range. Therefore, it is possible to obtain the linear control and the maximized utilization of PWM inverter output voltage.
金彰昊,金日培 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.1
Column that Packed with Montz Packings regularly and dumped Packing with Pall ring, Hiflow ring and Hackette have been represented high efliciency in Vacuum rectification and absorption. The new correlating of these relationships based on the numerous results has been developed for process calculation and design. The results of laboratory or experimental pilot plant can be adopted dircetly for scale-up.
김진배,장호중,유희철,박순문 한국학교체육학회 2003 한국학교 체육학회지 Vol.13 No.2
본 연구의 목적은 태권도 참여정도와 목표지향 및 인지된 자유감의 관계를 규명하는데 있어 연구대상은 2003년 현재 서울?경기 지역에 거주하며 태권도 수련을 하는 20세이상의 성인 남 228명, 여 272명, 총 500명을 대상으로 하여 목표지향을 측정하기 위해 Duda(1989)와 Nicholls(1989)에 의해서 개발된 TEOSQ를 성창훈이(1995)이 번안 작성한 설문지를 사용하였고 인지된 자유감(perceived freedom)을 측정하기 위해서는 여가진단 도구(Leisure Diagnostic Battery; LDB, Witt & Ellis, 1987) 원형중(1989)이 한국의 실정에 맞게 번안 검증하여 재개발한 여가진단 도구중에서 인지핀 자유감 척도를 사용하였다. 자료분석을 위해 사용된 통계분석은 프로그램인 WNDOWS용 SPSS/PC+ 10.0버전 을 이용하여 빈도분석(Frequency), 신뢰도분석(Reliability analysis), 일원인량분석(one-way ANOVA), 중다회귀블석 (multiple regression analysis)을 실시한 결과 첫째, 인구통제학적 특성에 따른 목표지향, 인지된 자유감의 차이는 부분적으로 나타났다. 둘째, 태권도 수련정도와 목표지향 및 인지된 자유감은 부분적으로 영향을 미치는 것으로 나타났다. 셋째. 태권도 수련자의 목표지향은 인지된 자유감에 영향을 미치는 것으로 나타났다. A study on the relation among the level of practice of Taekwondo, goal orientation and perceived freedom The purpose of this study is to look into the relation among the level of practice of Taekwondo, goal orientation and freedom. The, survey was conducted against 500 subjects, which consists of 272 female adults and 228 male adults above 20 who are practicing Taekwondo in the Seoul and Gyeonggi areas as of 2003. For evaluating the goal orientation, we used two research tools: 1) for evaluating the goal orientation, the questionnaire that Seong Chang-hun(1995) adapted the TEOSQ(Task and Ego Orientation in Sort Questionnaire) which was developed by Duda(1989) and Nicholls(1989), 2) for evaluating the perceived freedom, the perceived freedom scale which is one of the tools that Won Hyeong-jung(1989) adapted, verified and re-deveoped the LDB(Leisure Diagnostic Battery; Witt & Ellis, 1987) in consideration of domestic conditions. For analysis, we performed frequency analysis, reliability analysis, one-way ANOVA, and multiple regression analysis against the data with SPSS/PC+ Version 10.0 for WINDOWS which one of popular statistical analysis programs. Based on the above research procedure, we could conclude as follows: First, difference between the goal orientation and the perceived freedom of Taekwondo practicians was partially shown on the basis of demographic characteristics. Second, the level of practice of Taekwondo partly influenced their goal orientation and perceived freedom. Third, their goal orientation influenced their recognized freedom.
이배호,전용배,안장원 중앙대학교 기술과학연구소 1997 기술과학연구소 논문집 Vol.27 No.-
우리나라의 건설산업은 국내건설시장의 전면 개방과 표준품셈제도의 단계적 폐지와 같은 새로운 환경변화에 직면하고 있으며, 이러한 상황하에서 건설산업은 사고의 혁신과 기술혁신 필요하다. 선진국에서는 이 치열한 생존경쟁에서 살아남고 국가예산절감의 한 방편으로 가치공학을 통하여 큰 성과를 거두고 있다. 본 연구에서는 국가예산의 큰 비중을 차지하고 있는 건설공사에 대해서 미국, 일본과 우리나라의 가치공학변경제안제도, 시행 절차, 공사비절감 사례 등을 비교·분석하고, 국가예산절감을 위한 한 방편으로 공공공사에 대하여 가치공학변경제안제도를 활성화 시키고 나아가서 민간공사에서도 가치공학을 적극 활용할 수 있도록 하는 방안을 제시하고자 하였으며, 5가지의 방안을 제시하였다. The construction industry in Korea is confronted with new environment such as opening market for domestic construction and withdrawing of standard unit system. Under these circumstances, the construction industry needs technology and thought innovation. The developed countries is successful through Value Engineering(VE) in order to survive in this fierce struggle for existence and save national budget. This study tries to provide the encouragement of VE change proposal system to public construction projects as well as private construction projects with comparison and analysis of USA, Japan and Korean VE change proposal system, procedure and examples of saving budgets, and provides five alternative proposals.
전호석,김준수,문영배,이재장 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.A
The separation of rare earths minerals is verb difficult because of their similar chemical properties. The rare earth minerals are used as the mixed rare earth minerals or the misch metal without separation to each element. However, the high purity rare earths are recently produced commercially to each element so they there are used as the materials for high tech. Based on the characterization results for the raw minerals, we have developed a combined process containing gravity seperation, magnetic severation and flotation. The result obtained from this study is monazite concentration of TREO grade 69.11% and Recovery 56.02%.