• Title/Summary/Keyword: Naju

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Systematization Design of Linear Actuator by using CAE System

  • Cho, Kyeng-Jai;Cha, In-Su;Lee, Kwon-Hyun
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.107-112
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    • 1998
  • In this paper, we introduce the design method using CAE(Computer Aided Engineering) which is profitable in the compatibility and standardization of the developed product, and the reduction of construction time and price to develop and design a machine equipment. Particularly, we select the standard model to design or develop from the large machinery to the super precision one, extract the peculiar characters of the model by the close analysis on the physical and technical part, the experiment for the characteristics of objective dimensions by analogical mathematical analysis for previous results, and can induce the design model demanded by user investigating optimal data in the design previous. We present the analogical algorithms and process method of design factors and restriction factors in the systematization design with computer. Then we analyze step functions for each systematization equipment and induce the process of technical data with actuator model.

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Cooking Properties of Rices Produced in Naju (품종별 쌀의 취반 특성(나주에서 재배된 쌀을 중심으로))

  • 문세훈;김정옥;신말식
    • Korean Journal of Human Ecology
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    • v.7 no.1
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    • pp.11-19
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    • 2004
  • Three rice varieties of Nampyong, Dongjin I, Ilmi produced In Naju were examined for cooking properties. The lipid content of Dongjin I and the protein content of Ilmi were higher than those of others. Total amylose contents of three varieties were in range of 16.1$\sim$-18.6% and that of Ilmi were higher than the others. The initial gelatinization temperature by RVA were ranged from 69.8$^\circ$C to 73. 3$^\circ$C. Peak viscosity and breakdown were the highest in Dongjin I but setback was the lowest. Nampyong had the highest value(p

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River Flow Forecasting Model for the Youngsan Estuary Reservoir Operation( II) - Simulating Runoff Hydrograptis at Ungaged Stations - (영산호 운영을 위한 홍수예보모형의 개발(II) -나주하류유성에서의 총수유출 추정-)

  • 박창언;박승우
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.37 no.1
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    • pp.65-72
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    • 1995
  • This paper describes the applications of the SCS TR-20 hydrologic model for simula- tion of hourly inflow rates from sixty-six ungaged tributaries and subareas between the Naju station and the estuarin dam at the Yongsan River Basin. The model was tested for the ungaged conditions with fifteen storm events at Naju station. Hourly simulated run- off data were compared with the observed, and the results showed less correlationships between the two data than those from TANK model. The coefficients of correlation ranged from 0.74 to 0.87. The curve numbers and time of concentration were defined from topographic dta for each of sixty-six tributaries for the estuarine dam and used for TR-20 applications. The results were within an acceptable range of errors in simulating the inflow fluctuations for the flood forecasting at the estuarine dam.

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Short-term Flood Forecasting Using Artificial Neural Networks (인공신경망 이론을 이용한 단기 홍수량 예측)

  • 강문성;박승우
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.45 no.2
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    • pp.45-57
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    • 2003
  • An artificial neural network model was developed to analyze and forecast Short-term river runoff from the Naju watershed, in Korea. Error back propagation neural networks (EBPN) of hourly rainfall and runoff data were found to have a high performance In forecasting runoff. The number of hidden nodes were optimized using total error and Bayesian information criterion. Model forecasts are very accurate (i.e., relative error is less than 3% and $R^2$is greater than 0.99) for calibration and verification data sets. Increasing the time horizon for application data sets, thus mating the model suitable for flood forecasting. decreases the accuracy of the model. The resulting optimal EBPN models for forecasting hourly runoff consists of ten rainfall and four runoff data(ANN0410 model) and ten rainfall and ten runoff data(ANN1010 model). Performances of the ANN0410 and ANN1010 models remain satisfactory up to 6 hours (i.e., $R^2$is greater than 0.92).

A Study on Parameters-Calibration for the Tank Model (탱크모형의 매개변수 검정에 관한 연구)

  • Seo, Yeong-Je
    • Journal of Korea Water Resources Association
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    • v.30 no.4
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    • pp.327-334
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    • 1997
  • The purpose of this study is to calibrate the parameters of tank model for the derivation of a design flood hydrograph at a certain river basin outlet. The selected stations are Gongju and Naju station which are located in the Keum and the Youngsan river basin, respectively. The results of parameters calibration for tank model are represented a little different values comparing with the proposed values at Gongju station through the verification of flood hydrograph in modeling procedure but the values of tank parameters at Naju station are fitted well for the derivation of flood hydrograph using the proposed design parameters of tank model.

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Comparison between natural and anthropogenic soils through fractal dimension analysis (프랙탈 차원 해석을 통한 인위토양과 자연토양 비교)

  • Shin, Kook-Sik;Oh, Taek-Keun;Hur, Seung-Oh;Hyun, Byung-Geun;Cho, Hyun-Joon;Sonn, Yeon-Kyu
    • Korean Journal of Agricultural Science
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    • v.41 no.4
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    • pp.379-384
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    • 2014
  • In general, fractal analysis which is based on self-similarity as a basic theory has been mainly used to define the characteristics of complex mathematical figures, however, considering its basic theory, it can be also used to analyze the surface ununiformity of unknown materials. In this study, the soil samples were collected from the reclaimed (remodelled) agricultural fields which mean that the external soil is artificially piled up (mainly up to 1m) on the lands, Naju, Jellanam-do and Gumi, Gyeongsangbuk-do, and the conventional agricultural fields, Anseong, Gyeonggi-do and Hwasoon, Jellanam-do, and compared using fractal dimension analysis on the basis of the results of chemical properties. The score of fractal dimension ($D_0$) for organic matter was lower in Hwasoon (1.46) and Naju (1.58) than Anseong (1.86) and Gumi (1.96), and this trend showed similarly in soil pH. On the basis of the results of chemical properties, fine textured-soils (Hwasoon and Naju) and conventional agricultural fields were chemically uniform compared to coarse textured-soils (Anseong and Gumi) and the reclaimed. Therefore, it is required to develop technical methods for integrated soil management to the reclaimed lands.

Growth and Green Pod Yield by Sowing and Acclimation Dates in Autumn Green Pea (추파 풋완두 파종과 순화시기에 따른 생육 및 수량)

  • 김동관;이정양;윤창용;이야성;국용인;천상욱;박인진
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.48 no.6
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    • pp.447-451
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    • 2003
  • When sowing green peas in the autumn, proper seedling stands and growth quantity should be secured before winter begins. Also, for proper acclimatization, injuries caused by low temperatures, frost or high temperatures in the P.E. film during mulching, should be avoided during the regeneration period; that being early spring. The days required for growth in each stage in Yeosu are shorter than those in Naju because Yeosu has high temperatures during the growth period. Furthermore, in Yoesu, it was observed that there were more effective branches as well as effective and attached node positions on the branches. The first pods on the main stems and effective branches were observed to be higher than those in Naju. The number of pods per plant and the number of seeds per pod in Yoesu was greater than for those in Naju and the pod length was longer as well. Considering the missing plant rate, growth, and green pod yield, the optimum sowing date for the green pea was mid-November in both location. The stable acclimatizing date for the green pea was early March when the highest yield can be acquired due to a lot of effective branches and pods per plant and with the lowest missing plant rate and rate of injury in acclimatization.

Building Culture Complex Belt of Innovation City through Mixture of Cultural, Educational and Public Space (신도시형 혁신도시 문화공간의 복합화 조성 방안 -나주혁신도시를 중심으로-)

  • Kim, Hang-Jib
    • The Journal of the Korea Contents Association
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    • v.10 no.9
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    • pp.421-431
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    • 2010
  • Sustainable development is the main stream of urban development in 21st century. Also, in contemporary cultural space, it is the pivotal paradigm that the development of culture complex and mixture of cultural space, educational facilities, information technology and public space. So, the purpose of this paper lies in presentation for building culture complex belt for innovation city. For this purpose, this paper has reviewed the developmental trend of cultural facilities, has analyzed cultural environment of Naju city, has set the vision and the strategy for Naju innovation city up, and finally has suggested and planned the method of culture complex belt for sustainable new town development.