• The Korea Beekeeping Bulletin
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• s.205
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• pp.1-1
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• 1997

• JOURNAL OF ELECTRICAL WORLD
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• s.444
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• pp.36-42
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• 2013

• 종축개량
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• v.1 no.1
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• pp.2-3
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• 1979

• The Optical Journal
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• s.128
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• pp.79-82
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• 2010

• 발명특허
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• v.35 no.3
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• pp.20-27
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• 2010

• Korean Architects
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• s.586
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• pp.132-145
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• 2018

• Journal of Digital Convergence
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• v.16 no.2
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• pp.327-334
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• 2018

This study focuses on regathering the regional festival tourists through the reuse of Pyeongchang Winter Olympics facilities. It has a purpose of proposing directions to develop regional festival through the case analysis of successful domestic and international festivals. As a method of primary study, case analysis of domestic and international festivals and literature study were done. It was developed by data from the Statistics Office and Culture Tourism. This study suggests the Trout Festival and Snow Festival, to develop the following strategy using the facilities and make new, fused contents for the festivals. It expects the increase in facilities utilization and boom in regional economy to appear with the initiation of the unique strategy. This study to be used as a reference in the future for regathering the tourists and future studies on this specific topic.

• Journal of The Korean Society of Grassland and Forage Science
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• v.39 no.2
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• pp.114-120
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• 2019

This study was carried out to explore the accuracy of near infrared spectroscopy(NIRS) for the prediction of moisture content and chemical parameters on winter annual forage crops. A population of 2454 winter annual forages representing a wide range in chemical parameters was used in this study. Samples of forage were scanned at 1nm intervals over the wavelength range 680-2500nm and the optical data was recorded as log 1/Reflectance(log 1/R), which scanned in intact fresh condition. The spectral data were regressed against a range of chemical parameters using partial least squares(PLS) multivariate analysis in conjunction with spectral math treatments to reduced the effect of extraneous noise. The optimum calibrations were selected based on the highest coefficients of determination in cross validation($R^2$) and the lowest standard error of cross-validation(SECV). The results of this study showed that NIRS calibration model to predict the moisture contents and chemical parameters had very high degree of accuracy except for barely. The $R^2$ and SECV for integrated winter annual forages calibration were 0.99(SECV 1.59%) for moisture, 0.89(SECV 1.15%) for acid detergent fiber, 0.86(SECV 1.43%) for neutral detergent fiber, 0.93(SECV 0.61%) for crude protein, 0.90(SECV 0.45%) for crude ash, and 0.82(SECV 3.76%) for relative feed value on a dry matter(%), respectively. Results of this experiment showed the possibility of NIRS method to predict the moisture and chemical composition of winter annual forage for routine analysis method to evaluate the feed value.

• Korean Journal of Environmental Biology
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• v.40 no.2
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• pp.125-137
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• 2022

To assess the characteristics of meiofaunal community fluctuations related to environmental factors, seasonal surveys were conducted in the subtidal zone of Hallyeohaesang National Park. The average depth of the study area was about 20 m, and the average water temperature at the bottom was low in winter(11.33℃) and high in summer(17.95℃). The sedimentary particles mainly comprised silt and clay at most stations. The abundance of meiofauna ranged from 81.7 to 1,296.5 Inds. 10 cm^-2, and the average abundance was 589.3 Inds. 10 cm^-2. The average abundance of meiofauna in each season was the lowest at 416.5 Inds. 10cm^-2 in winter and the highest at 704.5Inds.10 cm^-2 in spring. The dominant taxa were nematodes (about 92%) and harpacticoids (about 5%). In the cluster analysis of meiofaunal communities, they were divided into four significant groups. The largest group mainly contained spring and summer samples, and contained stations with a high nematode density of over 500 Inds. 10 cm^-2 and harpacticoids below 50 Inds. 10 cm^-2 with a high composition ratio of nematodes. In the cluster analysis, no regional division was found between the stations, and it was thought to be divided by the seasons with high abundance according to seasonal variation and the composition ratio of nematodes and harpacticoids. In the Spearman rank correlation analysis, the density of total meiofauna and the most dominant taxa, nematodes, was not significantly related to environmental factors. However, the density of harpacticoids had a significant positive correlation with water depth and a negative correlation with sediment particle size.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.87-88
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• 2008

현재 전국적으로 많은 곳에 SPS(고장파급방지장치)가 설치되어 운영중에 있으며 대부분은 345kV이상 대단위 전원단지 인근에 설치되어 있으나 강원지역의 경우는 154kV 계통에 다수가 설치되어 운전중에 있다. 강원지역은 지역적 특성으로 인해 장거리 송전선로가 많으며 전원단이 원거리에 위치하여 고장시 전압불안정에 의한 계통붕괴의 위험성이 타 지역보다 높다. 특히 하계에 비해 난방부하 및 심야전력의 영향으로 최대부하가 대폭 증가하는 동계의 경우 이러한 특성이 더욱 두드러지는데 2007년 동계피크시 부하실적 및 역률을 기준으로 부하특성 및 부하역율 변동에 따른 계통영향을 분석하여 기 설치 운영중인 SPS 적용의 타당성 및 유지여부에 대한 판단 및 SPS 적용 개선(안)을 제시하였다.