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崔敏浩 서울大學校 農科大學 1986 서울대농학연구지 Vol.11 No.1
The purposes of this study were to evaluate the major accomplishments and effects of the Project for Fostering Young Farmers and Fishermen over the two years of period, and to search for the future directions for improvement of the project. The study was focused on the present status, problems and solutions of the loan project for fostering young farmers viewed by the loan recipients, 4-H club members, extension workers and agricultural teachers. Data for the study were collected through the questionnaire methods from 126 young farmers, 123 4-H club members, 134 agricultural extension officers and 73 teachers in agriculture during the month of August of 1983. Frequency, distributions, percent and the mean were used in analyzing the data. The results of this study were as follows: 1. The young farmers selected for the project loan were relatively higher than other youths in education, farming ability and experience. The project loan recipients' farming size was not larger than other farmers, but their farm income was higher by 150 percent than other farmers. 2. Farming size of the loan recipient in the fields of animal husbandary and horticulture has increased more than 200 percent and their farm income has increased by 60-70 percent over the two years. Young farmers responded that their will to getting settled in farming and the sense of responsibility toward community development have increased after they received the project loan and received higher recognition from the residents. Existing socio-economic effects of the project would be enlarged if the recipients were organized for leadership and farming skill development, and they would become a mojor force for rural development. 3. The rural youngmen who are not selected as project loan recipients wanted to be selected, and were trying to obtain qualifications for the recepients. Friends and parents of the recipients had more favorable attitude toward farming since implementation of the project. About a half of the respondents thought the selection process for the loan recipients was not fair enough. 4. Increased fairness and diversification of the selection process for the project loan recipients would be needed. Additional fund should be given to some of the recipients for successful settlement in farming, and the number of young women and agricultural high school graduates should be increased. 5. The project for fostering farmers has to be connected with the specialized farming project and more attention should be given to opinions of agricultural extension organizations. 6. Active participation of volunteer leaders would be necessary for fair selection of the project loan recipients. 7. The per-service training for young farmers should be on voluntary base than uniformity, and the follow-up activities including diffusion of the marketing information and the latest farming technology should be systematically organized for further development of the project.
2회전 CORDIC을 이용한 QRD-RLS 알고리듬 구현
최민호,송상섭 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.5C
본 논문에서는 변경된 Given회전을 이용한 QR 분해와 이를 기반으로 하는 RLS 알고리듬의 구현에 대하여 연구하였다. Givens 회전은 CORDIC(Coordinate Rotation Digital Computer) 연산을 반복 수행하여 구한다. QR 분해의 계산 시간을 줄이기 위해 1회의 Givens 회전에 필요한 CORDIC 연산의 반복 회수를 제한하였으며 보정계수를 계산할 때의 제곱근 계산을 없애기 위해 2회전 방법을 사용하였다. In this paper we studied an implementation of QR decomposition-based RLS algorithm using modified Givens rotation method. Givens rotation can be obtained with a sequence of the CORDIC operations. In order to reduce the computing time of QR decomposition we restricted the number of iterations of the CORDIC operation per a Givens rotation and used double-rotation method to remove the square-root in the scaling factor.
崔民鎬 弘益大學校 1984 弘大論叢 Vol.16 No.2
Parametric effects on Critical Heat Flux have been studied. Coupling effects of pressure, mass velocity and Steam quality were studied. The test was conducted in 25 Rod bundle nuclear reactor of Dia 0.415'' and 72'' long. The experiment was conducted with mass velocity of 0.5 ×106lb/hrㆍft²to 2.5 ×106 under the pressure of 1000∼2100 psia. The test data have been in good agreement with the previous empirical correlation.
崔民鎬 弘益大學校 1985 弘大論叢 Vol.17 No.2
Two processes, Bayer and Pcuk, to produce hydrazine hydrate have been compared in economic and technical aspects. Pcuk process is turned out to be more profitable than the Bayer process.
"파이프 內에 있어서 유동 열 연화성 폴리머의 열 전달에 관한 연구"
崔民鎬 弘益大學校 1983 弘大論叢 Vol.15 No.2
Heat transfer to a flowing thermally softened polymer(Polymethyl methacrylate) has been studied. Experimental temperature profiles were determined at various axial lengths. The data are both precise and reproducible. Sizable viscous dissipation was found to occur. This effect was found to be greater for polymethylmethacrylate than a molten polymer(polyethylene). The experimentally determined data were checked qualitatively with the data computed from a prior analytical solution of the equations of motion and energy.