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다짐 화강풍화토의 균등계수 변화에 따른 함수특성곡선에 관한 연구
유건선,김덕경,유남재 江原大學校 産業技術硏究所 2009 産業技術硏究 Vol.29 No.A
In this study, to determine characteristics of compaction and the soil water characteristic curve(SWCC) in decomposed granitic soils, compaction tests and SWCC tests were carried out for samples having various contents of coefficient of uniform(cu), By compacting their samples with standard Proctor density test, the effects of binder contents on maximum dry density and optimum moisture content were investigated and compared. Samples compacted with the maximum dry density and the optimum moisture content were tested by means of the SWCC, to determine their SWCC parameters, such as Brooks & Corey(λ, ψb), Van Genuchten(α, n, m), Fredlund & Xing(a, n, m).
웹을 이용한 건축설계 협업시스템 구축을 위한 정보 플로우에 관한 연구
오경진,오건수 남서울대학교 2005 남서울대학교 논문집 Vol.11 No.1
The main problem of the architectural design process using web is a lack of proper collaboration system. The lack of proper collaboration system can occur the serious problems because of difficulty of sharing the opinions of participants and exchanging information each other. Therefore, to progress the architectural design in effective way, standardized and objective collaboration process is necessary. We develope the efficient communication to support the process. The main purpose of this study is to analyze the existing architectural design process, list the information according to the steps, and develope the collaborative system which can be saved as database and help the decision making.
열전달을 고려한 고속 주축계의 열특성 해석에 관한 연구
백경근,김수태,최대봉,김태형 한국공작기계학회 2000 한국공작기계학회 추계학술대회논문집 Vol.2000 No.-
Unsteady-state temperature distributions and thermal deformations in high speed spindle are studied. For the analysis, three dimensional model is built considering heat transfer characteristics such as natural and forced convection coefficients Temperature distributions and thermal deformations are analyzed by using the finite element method. Results of analysis are compared with the measured data.
고정자 자속기준 벡터에 의한 유도전동기의 속도제어에 관한 연구
함년근,전기영,성낙규,이승환,한경희 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-
This paper described control of induction motor using voltage source inverter applied to orientation vector control which was indiract vector control. IGBT which has good switching characteristic was used to compose of converter, and speed response characteristic was improved, because of doing speed and current control. And processing speed and reliability was improved, using TMS320C31 and EPLD to compose of controller.
都市河川의 河床微地形 變化에 관한 硏究 : 春川市 太白川을 대상으로 On Taebaek River of Chunchon city
金炅南,全槿雨 江原大學校 森林科學硏究所 1997 Journal of Forest Science Vol.13 No.-
都市河川은 人間活動에 의해 주변 환경이 민감하게 변화하므로 지속적인 관찰이 필요하다. 이 연구에서는 인간활동이 都市河川에 미치는 영향을 파악하고자 春川市 太白川을 대상으로 1993년 6월 부터 1996년 6월까지, 4개년간 5회에 걸쳐 구간별 河床의 橫斷形狀, 變動量 및 偏倚度를 분석하였다. 연구결과, 1. 橫斷形狀 變化는 조사시기 별로는 1996년 6월이 가장 크게 나타났으며, 구간 별로는 측선 19∼20구간에서 最大 堆積量 1,247㎥, 측선 6∼7구간에서 最大 洗掘量 340㎥가 각각 발생하였고. 2. 1993년 6월 河床面을 기준으로 하면 1996년 6월에는 河床이 전체적으로 상승하여 약 4,600㎥이 堆積되었으며. 3. 流路偏倚度는 시기별로는 1996년. 측 선별로는 4,7,15,16,17,18,19,20을 중심으로 발생하였다 Urban river needs continuous observation for the river conservation because river surrounding environment sensitivly is changed by human activity. In order to grasp the effect of human activity against Taebaek river in Chunchon city, this research analysed the channel shape change, fluctuation volume and bias degree over five times, for June, 1993 to June, 1996. The results were as follows : 1. The change of channel shape on each surveying time mainly occurred in June, 1996 and maximum deposition, 1.247㎥ occurred on 19∼ 20section, maximum scouring, 340㎥ occured on 6∼7 section, 2. When comparing with June, 1993, increased deposition volume of channelbed was about 4,600㎥ in June 1996. 3 The bia degree of channel mainly occured in June. 1996 of surveying times and at 6,7,15,16,17,18,19,20 line of surveying lines.
충남대학교 부속동물병원에 의뢰된 개의 뇨결석 성분 분석 결과
노경완,송근호,조종기,박성준 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-
A retrospective analysis was performed with 14 cases of canine urolithiasis examined at Laboratory of Clinical Pathology, College of Veterinary Medicine, Chungnam National University in the period between January 2005 and November 2005. The female (8 cases) had most occurrence about 14 cases. The Shih-tzu (8 cases), Poodle (4 cases) had higher incidences than other breeds. Canine urolithiasis occurred from 1 year 3 months to 7 years 6 months, but the most prevalence age was 3 years. The major mineral component of calculi was calcium oxalate (64.28%) and struvite(21.44%).