• Magazine of the Korean Society of Agricultural Engineers
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• v.38 no.2
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• pp.75-86
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• 1996

The formulas for estimating the constants of storage function model including K and TL for runoff analysis and a distributed storage function model are discussed in this study. First, the relations between parameters of the storage function model and the kinematic runoff model are theoretically examined, and then optimum constants of storage function model are obtained by the Standardized Davidson-Fletcher-Powell (SDFP) method. Through this analysis, theoretical formulas were obtained as $K = 0.63 {\alpha} KsB{^0.6}$ and $T_{L}=0.11 {\alpha} KsB{^0.6} r{^0.4} {_e}$, which are difficult to use practically because of the unclarified definition of shape factors. From a practical point of view, empirical formula were derived as $K=15.6{^0.3} {_m}$ and $T_{L}=2.1B{^0.36} {_m} {_e}/r{^0.4} {_e}$ for applied watersheds. The proposed formulas are verified for several recoded floods at a few points of watersheds. It is also found that the distributed storage function. can be applied to flood runoff analysis using the new formulas aboved mentioned.

• Korean Journal of Materials Research
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• v.7 no.2
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• pp.152-156
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• 1997

In this paper, I meritioned ,I study on thc rnechanochernic;~l effec ts of grountl iljckite To investigate the mechanochemical effects of ground tlickite 1,y planet,~r\- mill. a structul-ill i~nalvsis of dickite prepared with different grinding time has been made 11y X-ray diffraction and ilifierenti,~l tl~i.~-ni;~i analysis. 'l'he $SiO_{4}$ hecira was unchanged bl- milling and remained ;is the local ordering unit s t t - ~ c ~ u ~ - c ~ s in the ground dickitc samples I ) v analyzing the radial distribution function. On the other hand, with an increi~se of the grinding time a decrease of coordination number and atomic distance bet\vccn aluminum and oxygen hi1c.r l~een octurreil, and Li~~antitativcl\. coniirrned them This result corresponded to the local c,hange around aliimi~iuni I>V tliftercntii~l t1ii:rm;il ani~lysis. Therefore, the mechanochemical phenomina of ground tiickite werc3 h e to the local c~l~mge around aluminum \IT. the prolonged grinding.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.4 no.4
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• pp.242-249
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• 2011

In this study, The degree of scoliosis, an algorithm that can automatically detect was developed. Developed system was used for X-ray imaging source. The formula for the degree of curvature of the spine of the S <0, and, L> 0 is satisfied with the condition $Y=SX^2+L$ is a function expression. X-axis length can be changed and applied equally in all spline function graph, and the slope is $S=-L/92^2$. The graph on the degree of scoliosis of the differential equation Y'= 2SX could see that the extracted spine wire for the classification and the classification of scoliosis, the degree is determined as the available algorithms.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2005.10a
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• pp.255-258
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• 2005

닭고기의 함수율이 증가함에 따라 저장 5일의 6% 처리구에서 TBARS 값이 0.067, 8%, 0.082, 10%, 0.093 mgMA/kg으로 계속 증가하는 경향을 나타내었다. 육색에서 명도(L*), 황색도(b*)는 함수율에 따라 일정한 경향을 나타내지 않았다. 함수율에 따른 총 세균수는 저장 3일 6% 처리구에서 2.87, 8%, 2.93, 10%, 2.90 log CFU/$cm^2$로 처리 간에 큰 차이를 나타나지 않았다. 저장 5일에서 6% 처리구는 3.03, 8%, 3.01, 10%, 3.13 log CFU/$cm^2$로 10% 처리구에서 약간 증가하는 경향을 나타냈으나 함수율에 따라 큰 차이를 보이지 않았다.

• Korean Journal of Poultry Science
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• v.35 no.3
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• pp.247-253
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• 2008

This study was performed to evaluate change of lipid oxidation, microbes, and color of chicken meat containing 6, 8, and 10% of water uptake rate(WUR) during cold storage. pH of chicken containing 6, 8, and 10% of WUR showed 6.00, 6.04, and 6.05%, at day 3, respectively. Lightness($L^*$) of chicken containing 6, 8, and 10% of WUR was 73.40, 75.27, and 75.31, at day 3, respectively. Redness($a^*$) of chicken with 10% of WUR was 2.52, which was the highest value, while no difference was found between chicken with 6 and 8% of WUR. Yellowness($b^*$) of chicken containing 6, 8, and 10% of WUR was 4.31, 4.33, and 4.36. Thiobarbituric acid reactive substances(TBARS) value of chicken containing 6, 8, and 10% of WUR was 0.107, 0.104, and 0.113 mg malondialdehyde/kg meat. The higher WUR, the higher TBARS value was shown. Total microbial number of chicken with 6, 8, and 10% of WUR was 4.04, 4.12, and 4.56 $log\;CFU/cm^2$ at day 3. E. coli of chicken with 6, 8, and 10% of WUR was 0.93, 1.40, and 1.28 $log\;CFU/cm^2$. From this result high WUR increases $L^*$ value, TBARS, and microbes of chicken meat during storage. Therefore, lower WUR would be beneficial to extend shelf life of chicken meat during storage.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.13 no.4
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• pp.82-86
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• 1999

Electron Energy Distribution Function(EEDF) were treasured In Radio-Frequency Inductively Coupled Plasma(RFlCP) using a probe rrethocl Measurerrents were conducted in argon discharge for pressure from 10[mTorr] to 4O[mTorr] and input rf power from 100[W] to 600[W] and flow rate from 3[sccm] to 12[sccm]. Spatial distribution of electron energy distribution function were measured for discharge with same aspoct ratio (R/L=2). Electron energy distribution function strongly depended on both pressure and power. Electron energy distribution function increased with increasing flow rate. Radial distribution of the electron energy distribution function were peaked in the plasma center. Normal distribution of the electron energy distribution function were peaked in the center between quartz plate and substrate. From the results, we can find out the generation mechanism of Radio Frequency Inductively Coupled Plasma. And these results contribute the application of a simple Inductively Coupled Plasma(ICP).a(ICP).

• Journal of Korean Society of Environmental Engineers
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• v.35 no.1
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• pp.23-30
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• 2013

The sludge disposal is a major economic factor in the sewage treatment facility operation. Moreover, since the ocean dumping will be prohibited by Korean environmental law from 2013, sludge should be eliminated or sludge volumetric reduction should be performed urgently. In this study, improvement of the sewage sludge dewaterability was investigated by ultrasound and electric field treatment. Sludge was treated by a single or in combination of either the electric field or ultrasound on a pilot pretreatment facility, then it was dewatered by lab-scale filter press. The operating input energy of ultrasound device was varied from 225~1,200 kJ/L and electric field device was varied from 4.5~24 kJ/L. The water contents of dewatered sludge cake treated with ultrasound (1,200 kJ/L) and combination of ultrasound/electric field (1,224 kJ/L) were decreased 10~12% by comparing non-treated sludge. At that time, water contents were 65~66%. The combination treatment of ultrasound/electric field was effective to reduce water content of dewatered sludge cake, however, water content was not changed by a single treatment of electric field because of low energy density.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1997.10a
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• pp.127-130
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• 1997

신경망은 입출력 관계가 명시적으로 표현되기 어려운 경우에 수집된 데이터를 이용하여 원래의 함수를 근사할 수 있느 특성이 있다. 최근에는 신경망의 모델링 성능을 향상시키기 위하여 여러개의 모듈을 기반으로 신경망을 구성하는 모듈형 신경망이 활발히 연구되고 있다. 본 논문에서는 린덴마이어 시스템(L-시스템)의 문법적 적용을 통하여 이러한 모듈형 신경망의 구조를 결정하는 방법을 제시하고자 한다. L-시스템은 본래 식물의 성장과정을 기술하기 위하여 제안된 방법인데, 본 논문에서는 신경망의 모듈형 구조가 L-시스템의 문법을 통하여 적절히 결정됨을 보인다.

• Journal of the Korean Data and Information Science Society
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• v.3 no.1
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• pp.25-31
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• 1992

Some results relating to $C_{0}(R)\;and\;L^{1}(R)$ spaces with application to kernel density estimators will be introduced. First, random elements in $C_{0}(R)\;and\;L^{1}(R)$ are discussed. Then, complete convergence limit theorems are given to show that these results can be used in establishing uniformly consistency and $L^{1}$ consistency.

• Journal of the Korean Institute of Telematics and Electronics B
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• v.31B no.11
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• pp.136-141
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• 1994

In this paper, we implemented an opto-electronical signal processing system for the edge detection using the diffusion neural network. The diffusion neural network performs a Gaussian and DOG operation efficiently by the diffusion process. The diffusion neural network is more efficient than the LOG masking method in hardware implementation because it has a few connections and the connection weights are fixed-valued. We implemented a diffusion neural network using the characteristics of the light intensity distribution function which is similar to the Gaussian function. We have shown that the system can detect the edge of an image exactly through the experimental results.