양계산물의 수입자유화가 국가경제에 미치는 영향

홍성규,어영준,서대석 건국대학교 1995 學術誌 Vol.39 No.1

This study is aimed to identify effects of import liberalization of chicken products not only on agriculture but also on national economy overall. The extending influences on production and income are generally measured using input-output analysis tool. But the reaction induced by import liberalization of chicken products would not be considered in the open static input-output-model, far example multiplicator effects between income and consumption. In order to overcome the defect of the open static input-output-model, the open static Leontief-model is extended to the income-consumption relation in measuring the extended effects of the import liberalization of chicken products. This study is undertaken using the results of KREI(Jan. 1994) which concluded that the direct losses in agriculture from 1995 to 2001 could be 113 billion won at the constant price of 1990. It was calculated that the indirect production losses of the other related industries could be 165 billion won, and 246 billion won in the view of income-consumption relation. It was also predicted that the indirect income losses of the other related industries would be 89 billion won, and 126 billion won in the view of income-consumption relation. As a result import liberalization of chicken products could possibly bring about larger losses to the other industries than to agriculture. Especially, in the "Other flood preparations" sector, the indirectly largest loses could predict to be occured.

자유곡면으로부터 단면정보를 이용한 황삭계획에 관한 연구

안대건,최홍태,이석희 한국경영과학회 1994 한국경영과학회 학술대회논문집 Vol.- No.1

This study deals with roughing planning by cross sectional information generated from sculptured surfaces. Bicubic Bezier surface is adopted as sculptured surfaces in this paper. The system consists of 3 parts : (1) modeling sculptured surface, (2) reconstruction of cross-section in 2D coordinates, (3) determination of roughing tool path with structural data. The system is developed by using IBM-PC in the environment of Auto CAD R11, AutoLISP and MetaWare High C. The proposed system shows an efficient algorithm for roughing planning with cross sectional informaiton.

가토에서 음각틀을 이용한 이개 재건의 실험적 연구

민대홍,김승홍,백무현,김원석 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.4

The formation or reconstruction of an auricle is one of the most difficult operations in plastic and reconstructive facial surgery. The difficulties of its reconstruction include delicate structures of the ear, extremely thin skin, difficulty in color match, and springing effect of the thin supporting skeleton consists of cartilage with its peculiar recesses and bumps. Even though, several techniques have been using for auricular reconstruction, it would be difficult to obtain an ideal auricle. Furthermore surgeon's talent and sufficient practice might be needed for a satisfactory result. We attempted auricular reconstruction using negative auricular plastic mold in 10 white rabbits in order to pursue a simple and satisfactory method. Diced cartilage chips were filled into a subcutaneous pocket placed in the negative auricular mold. Mild negative pressure was maintained in the space between the cartilage-subcutaneous tissue-skin complex and mold for two months. The results were as follows: 1.An ideal shaped suitable supporting skeleton was newly formed and the fabricated new auricle had a near normal appearance. 2.Under the microscopic examination, the diced cartilage chips have conglomerated together to form a solid skin - connective tissue - cartilage framework and evenmore matured chondrocytes were noted.

TiO₂-CaSO₄와 TiO₂-CaCO₃계의 고상반응기구 : TiO₂의 반응성 및 상형성 Reactivity of TiO₂and Phase Forming

김홍대,한인섭,유태석,정윤중 明知大學校 産業技術硏究所 1986 産業技術硏究所論文集 Vol.5 No.-

For to detect the mechanism of the product phase and the assignment of the two reactant on the solid state reaction of TiO₂ with the CaSO₄ and CaCO₃ respectively at the reaction temperature 900℃ - 1400℃, the refractive microscope, scanning electron microscope, and electron dispersive spectroscope analysis were examined. For the reaction of TiO₂ with CaSO₄ the product phase which earned is CaTiO₃perovskite and from the first, the intermediate product of TiO₂· CaO·SO₂ was formed. However, the main product phase is Ca₃Ti₂O7, which is coexisted in the product layer, at the reaction of TiO₂ with CaCO₃·TiO₂ was diffused into CaSO₄ and CaCO₃ reactant side is both two reaction. Specially, in the case of CaCO₃, the transfer of TiO₂ is rapid through the pore, which was formed with vaporization of CO₂ gas.

Lifting을 이용한 고저항 고장 검출에 관한 연구

고윤석,홍대승 남서울대학교 2004 남서울대학교 논문집 Vol.10 No.2

The research presented in this paper focuses on a method for the detection of High Impedance Fault(HIF). The method will use the Lifting and neural network system. HIF on the multi-grounded three-phase four-wires primary distribution power system cannot be detected effectively by existing over current sensing devices. These paper describes the application of lifting scheme to the various HIF data. These data were measured in actual 22.9kV distribution system. Wavelet transform analysis gives the frequency and time-scale information. The neural network system as a fault detector was trained to discriminate HIF from the normal status by a gradient descent method. The proposed method performed very well by proving the right state when it was applied staged fault data and normal load mimics HIF, such as arc-welder.

신호인자와 목표치가 디지털 변수인 경우를 고려한 동적 파라미터 설계 적용(2)

송종대,황규완,배홍석 慶南專門大學 2000 論文集 Vol.28 No.1

각형강관을 이용한 스틸콘크리트 단위벽체의 축내력에 관한 실험적 연구

김곤묵,홍석일,이대현,김호수 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

The steel house, one of new construction methods, has been mainly adapted to a lot of housing and developed in construction skill. But the disadvantage of steel house system is that the system is limited to small housing because it is composed of light gauge steel. Therefore, in order to solve it, this study presents the new system which is made of a carbon steel square for general structural purpose. The framed wall system which is presented in this study is composed of the steel stud members by using the carbon steel square and is reinforced by the horizontal members called runner. So, this system has more sufficient strength and axial load capacity than the steel house wall system. Besides, this system gives us the improved effects of the adiabatic and sound insulation by filling up the autoclaved lightweight concrete. Accordingly, this study evaluates on the axial capacity of unit wall of the system through the experimental study according to the experimental variable and analysis on the structural performance of the framed wall system using carbon steel square.

PCR을 이용한 Rat 기관지 세척액에서의 Pneumocystis carinii DNA의 검출 : 기초실험 A pilot study

김주옥,홍석철,한표성,이종진,김선영,이영하,신대환 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.1

Background: Pneumocystis carinii (PC) is a opportunistic pathogen causing serious pneumonia (Pneumocystis carinii pneumonia : PCP) in immunosuppressed patients including AIDS. Laboratory diagnosis of PCP is dependent on microscopic demonstration of the PC by using cytochemical staining or by immunocytochemical staining with monoclonal antibodies. However, these staining methods are not highly sensitive. The development of the polymerase chain reaction (PCR) has made it possible to detect very small numbers of pathogens in clinical specimens. To establish the usefulness of PCR for detection of PC DNA, We performed PCR as a pilot study. Methods: PCP was induced on Spraque-Dawley rats with prednisolone 5mg IM twice a week. Bronchial lavages, impression smears, and permanent sections were performed from the 3rd week to 7th week of cortisonized rats. PC DNA was extracted with bead beater / 10% CTAB method. Results: Impression smears showed PC cyst after the 4th week (100%, 28/28 rats), and permanent sections showed 27/28 rats. Control rats showed some PC cysts (2/7). PCR result was positive only one case among the 6th week rats (1/7), But positive 6 cases at the 7th week rats, (6/7). Among control rats. 2 cases were positive (2/7). ??This data is a pilot study for the PC DNA detection using a PCR. PCP were successfully cortisonized rats. If adequate bronchial washing technique will be used, PCR can be a sensitive for PC DNA detection.

대장안 조직에서 cDNA Microarray의 초기경험

금충수,이령아,홍영준,홍석일,황대용 대한대장항문학회 2003 Annals of Coloproctolgy Vol.19 No.6

HEC-1 모형에 의한 산간지 하천유역에서의 유출해석

곽종현,이대철,이종석,홍진표 大田産業大學校 1998 한밭대학교 논문집 Vol.15 No.1

The Hydrologic runoff process is a complicated system which consists of hydrologic and hydraulic factors, watershed characteristics and runoff properties. In this study the design flood discharge of the upper basin of the Guem river watershed has been determined based on HEC-1 model. For this purpose, the studied area was divided into 9 sub0basin and 7 channel reaches, and then watershed and river routing have been applied to such sub-basin and channel reaches. As the results, the estimated flood discharge was quite well agreed with the observed one. The parameters such as the lag time, peak time and runoff curve number appeared as the most important factors in runoff analysis. As the considered sub-basin is getting closer to main gage station, the lag time and peak time values decrease while the runoff curve number increases. Overall, this study may provide the useful information of estimation the design flood in smalll watershed of upper catchments.