大學 캠퍼스의 建築計劃에 관한 硏究 : 順天大學校의 경우를 中心으로 based on the case of Sunchon National University

文昌浩 순천대학교 공업기술연구소 1992 工業技術硏究所論文集 Vol.6 No.-

This study is intended to review the overall architectural planning for university campus based on the case of Sunchon National University. The contents of research include process & factors of architectural planning, understanding of site & building area, estimation of required floor area by educational & supporting facilities, a proposal of site plan, and a direction for desirable campus planning. Some found results are as follows; The size of our site & building is absolutely not enough to cover the university in the future. One of most possible way to solve the problem could be considered to expand around the site, and to redevelop the campus as high-density & high-rise for the maximum land use.

高濃度 活性슬러지法에 의한 基質除去

羅德寬 순천대학교 공업기술연구소 1987 工業技術硏究所論文集 Vol.1 No.-

In this study, the equipment in which the sedimentation tank is directly connected to the aeration tank is adapted for the substrate removal by concentrated activated sludge process. Obtained experimental results are as follows; 1) As the mixing intensity of the surface aerator increases, substrate removal rate becomes higher and effluent SS becomes greater. As the concentration of sludge becomes higher, the revolution speed of turbine must increase, in order to maintain the size of sludge floc properly and supply more oxygen required. 2) As the concentration of sludge increases, the oxygen uptake rate per unit volume of sludge increases, but the oxygen uptake rate per unit weight of it decreases. 3) The stability of sludge blanket in the adapted equipment is much depended on the size of passage between the aeration tank and sedimentation tank. 4) The separation of concentrated activated sludge can be barely expected by sedimentation, but it can be easily done by the adapted equipment.

광굴절 Ce-SBN:60 결정에서 2광파결합을 이용한 광변조된 RF신호의 증폭

이권연 순천대학교 공업기술연구소 1996 工業技術硏究所論文集 Vol.10 No.-

The energy transfer between two writing beams in photorefractive Ce-SBN:60 crystal is analyzed and experimentally demonstrated as a function of the incident intensity ratio and external crossing angle. By the two - wave coupling experiment the effective charge density N_(eff) is 1.59×10^16㎝^(-3) for the optimized writing conditions and the theoretical analysis. Two - wave coupling with amplitude modulated signal beams in the undepleted - pump - beam approximation is also analyzed, and experimental results are presented in confirmation of the analysis.

TPD Chromatogram의 해석에 관한 연구 - Ⅱ

우명우 순천대학교 공업기술연구소 1989 工業技術硏究所論文集 Vol.3 No.-

A theortical and experimental study of TPD experiments was carried out. From this result we concluded that TPD chromatogram is influenced by desorption kinetics, de­sorption activation energy. Also variations of desorption activation energy with coverage influences the TPD chromatogram. Shape of the catalyst and temperature gradient within the catalyst are strongly influence on the chromatograms of the experiments.

유도전동기를 제어하기 위한 인버터의 공간벡터 퍼지제어

鄭東和,朴奎南 순천대학교 공업기술연구소 1998 工業技術硏究所論文集 Vol.12 No.-

A system with fast torque response is very beneficial in applications where direct self control(DSC) is highly desirable. The response of DSC is slower during startup and during change in command torque. Fuzzy control is used for implementation of DSC to improve its slow response. Simulation implementation of the fuzzy logic controller was carried out to verity the behavior of the controller. The simulation results with fuzzy control are compared with those of the conventional DSC. The starting flux and torque response and the responses to the step changes in command torque with fuzzy implementation show a considerable improvement over the conventional control. The steady state responses in both the cases are the same.

TEXTURE EVOLUTION IN Ti-ADDED EXTRA LOW CARBON STEEL SHEET

Park, Young Bum 순천대학교 공업기술연구소 1991 工業技術硏究所論文集 Vol.5 No.-

Ti-첨가 극저탄소 강판의 냉간 변형량에 따른 집합조직 발달을 두께층별로 조사하였다. 냉간압연 집합조직과 재결정 집합조직은 그 최대 집합조직 성분이 이 두가지 변수에 크게 의존함을 밝혔다. 냉간압연 집합조직과 재결정 집합조직의 방위 관계를 방위분포함수를 이용하여 해석한 결과 재결정 집합조직의 최대 성분은 냉간압연 집합조직의 최대 성분에 직접적으로 영향을 받는다는 사실을 규명하였다.

전로분진의 특성과 산침출

반봉찬,이호종,이길홍 순천대학교 공업기술연구소 1991 工業技術硏究所論文集 Vol.5 No.-

Physical properties of discarded dusts from LT system of converter were studied to find the possibility of their reusage, such as size distribution, chemical composition according to size distribution, and phase analysis by X-ray diffraction. The leaching test by H_2SO_4 showed that the recovery of FeSO_4·7H_2O from LT dust was 75% and the quality of this sulfate was commercial grade.

피라미드型 전단연결재를 갖는 合成보의 疲勞强度와 反復荷重下에 있어서의 應力評價

이경동 순천대학교 공업기술연구소 1996 工業技術硏究所論文集 Vol.10 No.-

Fatigue problems play an important role in designing the composite slabs of bridges under severe traffic condition. In order to clarify the fatigue properties of steel plate-concrete composite slavs, a series of fatigue tests was carried out for several types of the PSC beams under various cross-sections and loading conditions. An evaluation method for the stresses of steel plate and concrete of the slabs under repeated loading has been presented by using the experimental fatigue properties such as the S-N curves. Good agreements were obtained between the estimated solutions and the experimental values.

Brace材 履歷 Loop의 解析Model 設定에 관한 硏究

朴一民 순천대학교 공업기술연구소 1991 工業技術硏究所論文集 Vol.5 No.-

The physical brace models using the plastic hinge method provide simple and specialized techniques for predicting the post-bucking and cyclic inelastic bebavior of braces. That is, abvantages of the plastic hinge theory models are that the computational simplifications allow analyses of complete brace structure, and that only the cross-section properties and effective length of the brace need to be defined. The plastic hinge theries are based on assuming an axial-force(N)-moment(M) interaction curve and elasto-perfectly plastic moment-curvature relationship at the center hinge. But because of the assumption and idealizations involved the plastic hinge models available give comparatively accurate results only for the members with high slenderness-ratio kL/r>120 approximately, that is, most of the suggested models have avoidable limitations applying for the low slenderness-ratio. However, the advanced physical brace model would reduce the need for empirical data and input parameters required. In this paper, advanced physical model is suggested with comments on its theoretical bases, correlation with limitations and demerits of past research achieved on the physical brace models, and also basic considerations, member parameters and deformations affecting brace inelastic behavior are discussed.

주철조직중 흑연거동에 미치는 기포발생처리의 영향

李昊宗,潘奉贊 순천대학교 공업기술연구소 1990 工業技術硏究所論文集 Vol.4 No.-

The process of graphite formation in solid state was observed after the graphitization heat treatment of the white cast irons artificially made to contain pores or CaO inclusion by means of the additions of Se, gas bubble formation agents or CaO, a compound of oxygen in the hypoeutectic cast iron melts. The process of graphite formation in liquid state was examined after the additions of MmH_2 or Kl in the hypereutectic cast iron melts and cooling either slowly or rapidly. The influences of the amount of MmH_2 addition, different holding times after the additions and different S amount in the melts were also investigated. According to the results obtained, the mechanism of spheroidal graphite formation was studied in the view of the gas bubble theory. The results obtained in this work were as follows: 1. in the case of the graphitization heat treatment of the white cast irons under Se, CaCO_3 additions, temper carbon was preferentially precipitated on the remaining gas pores, but with only CaO addition, little graphite was formed on the CaO inclusion in the samples. From the results the behavior of graphite in solid state was preferred at the defects such as the remained pores in cast iron. 2. In the case of the addition of 0.5wt% MmH_2, a gas bubble formation agent, to the hypereutectic melts with 0.015 and 0.030wt% S, there appeared an increase in the count of spheroidal graphite, the rate of graphite formation and the time for spheroidal graphite to remain in the melts with 0.015wt% S rather than 0.030wt% S. 3. In Kl addition to the hypereutectic melts with 0.030wt% S spheroidal graphite was made when cooling the sample rapidly, but flake graphite was made when cooling slowly. These results were in accordance with the view of the gas bubble theory.