• The Korean Journal of Applied Statistics
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• v.11 no.1
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• pp.141-150
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• 1998

In this paper, we developed one-stage cluster randomized response model for obtaining quantitative data by using the Greenberg et al. model(1971) when the population was made up of sensitive quantitative clusters. We obtained the minimum variance by calculating the cluster's size and the optimum number of sample clusters under the some given constant cost. We compared the efficiency of our model with the Greenberg et al. model by simple random sampling.

• The Optical Journal
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• s.109
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• pp.50-51
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• 2007

한국은 IT분야의 무관세를 시행한 이후에 수출이 오히려 급격한 증가세를 나타냈다. 이러한 무관세에 의한 개방정책은 업계의 적절하고 지혜로운 대응으로 위기를 기회로 바꾼 사례로 꼽을 수 있으며, FTA의 타결에 상당한 시사점을 보여주고 있다. 우리나라의 IT관련 산업은 ITA 협정에 따라 무관세화 실시에도 불구하고 상당한 경쟁력을 갖춰 국내수출 주력제품으로 성장했다.

• (The)Study of the Eastern Classic
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• no.67
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• pp.173-201
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• 2017

Sinheung Military Academy was the first one which prepared for independence war built by members of Sinminhoe in Western Manchuria. Sinheung Military Academy is known that nurtured 3,500 independence soldiers during 10 years from 1911 thorough 1920. Nevertheless no people know how it recruited so many students for 10 tears. In the course of studying the recruit of Sinheung Military Academy, I became to focus on Manjugisa by Yi Sang-nyog. Although Yi Sang-nyon remembered that there were over five hundred students in Sinheung Military Academy from just after it's set up in Manjugisa, scholars overlooked that mention so far. In addition, in the Sixth poem of Manjugisa, Yi Sang-nyong recollected that there were 30 preliminary educational organizations in 1918 after installation of Sinheung Military Academy in 1911. Therefore I concluded that the over 500 students nurtured from just after installation of Sinheung Military Academy were summed up students of preliminary educational organizations over Sinheung Military Academy's and proved it. The students of preliminary educational organizations in Liuhexian Tonghuaxian entranced into Sinheung Military Academy after graduation. The graduates of Sinheung Military Academy taught the students of preliminary educational organizations a common and military educations in duty for two years. In conclusion, Sinheung Military Academy and nearby preliminary educational organizations were an wide military camp organically maintained by Korean in Western Manchuria for big purpose of independence war.

• Proceedings of the Korean Vacuum Society Conference
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• 1999.07a
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• pp.210-210
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• 1999

그리드 전압을 +20V에서 -20V까지 변화시켜 줌을 이용해 확산 영역의 전자의 온도를 2-0.6eV까지 제어할 수 있었으며, 전자 밀도는 1010cm-3 - 1011cm-3, 플라즈마 전위는 3-25V까지 제어할 수 있었다. <그림1>은 실험결과이다. 그 외 전자의 온도는 입력 전력의 주파수 및 크기에는 거의 무관하나 압력에 반비례하였으며, 밀도는 전력의 크기에 비례하고, 압력에 반비례하나, 전력의 주파수에는 무관하였다. 그리드 전압이 20V에서 -20V로 변함에 따라 전자의 온도가 떨어져 높은 에너지를 가진 전자들이 줄어들게 되어 CF3+의 양은 많아지고 CF2+와 CF+의 양은 상대적으로 줄어들어 CF3+와 CF2+ 비는 4-18 CF3+와 CF+ 비는 2-5까지 변화하였으며, 변화모양은 전자 온도에 크게 의존하였다. <그림2>는 결과를 나타낸 것이다. 그 외 CF3+ / CF2+ 와 CF3+ / CF+는 입력 전력의 크기에 반비례하며, 압력, 가스 주입량에 따라서도 이온들의 분포 변하였다. 그러나 입력 전력의 주파수와는 무관하였다. Appearance mass spectrometry를 이용한 결과 CF, CF 중성종의 분포도 그리드 전압에 따라 변하여 그리드 전압이 높은 경우 더 많이 존재하였다.

• Korean Journal of Medicinal Crop Science
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• v.5 no.4
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• pp.318-324
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• 1997

When Bupleurum falcatum field was irrigated three times with 20mm at intervals of 10days after sowing, establishment was inproved (64%) and root yield increased to 58kg/10a. And in early growing stage, 30mm irrigation six times at intervals of 10days increased the number of harvested plants per square meter and resulted in yield increase by 26% over yield from natural plot. 20mm irrigation in sowing time at intervals of 10days and 30mm irrigation in early growing stage at intervals of 10days kept adequate soil moisture content (soil moisture tension: $0.39{\sim}0.49bar)$ and resulted in better establishment, growth and yield of Buleurum falcatum.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.7 no.6
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• pp.75-83
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• 2004

Focusing on native plants that have high possibility of being introduced as rooftop material, this study was conducted to investigate extensive and easy-to-manage rooftop garden and to raise the utilization of native plants by verifying their growing response to artificial substrate soil depth and irrigation period. The study was conducted from March to September in 2002. Plants tested included Chrysanthemum zawadskii, Sedium middendorffianum, Thymus quinquecostatus, Allium senescens, and Dianthus superbus. Regarding soil depth, it was 5 cm and 10 cm. Irrigation period was non-irrigation, 1-week, 2-weeks, and 3- weeks, Its result is as follows; 1. In case of Sedum middendorffianum Maxim, mortality rate was 0% regardless of soil depth and irrigation period making it very suitable material for rooftop garden. 2. In case of Allium senescens L., mortality rate was 0% regardless of soil depth and irrigation period making it very suitable material for rooftop garden. Therefore, Provided that fertilizing is managed well, it is a plant that can be highly utilized.3. In case of Chrysanthemum zawadskii Herb. Subsp. (Nakai) Y. Lee Stat., the growth of top was lower in 10cm than in 5cm and it grew well in 10cm. When utilizing for rooftop garden, it would be desirable to keep minimum viable soil depth at over 10cm. If there is enough rainfall, soil and soil depth seem to have greater effect on growth than irrigation period does. 4. In case of Diauthus superbus L. var. longicalycinus (Maxim) Williams, rooting rate and growth were better in 10cm than in 5cm. Therefore, it is desirable to keep minimum soil depth at over 10cm. 5. In case of Thymus quinquecostatus Celak, the growth of top and flowering were better in 10cm than in 5cm. Therefore, it seems desirable to have minimum viable soil depth to be over 10cm. In conclusion, the most suitable species for rooftop garden are Sedium middendorffianum and Allium senescens in this experiment. However, Chrysanthemum zwadskii, Thymus quinquecostatus, and Dianthus chinensis also can be utilized greatly when irrigation is managed regularly in artificial mixed soil over 10cm.

• Korean Journal of Optics and Photonics
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• v.6 no.1
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• pp.70-75
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• 1995

Erbium 첨가 광섬유를 광원겸 광증폭기로 사용하는 방식으로 개회로 형태의 광섬유 gyroscope를 구성하였다. Erbium 첨가 광섬유를 거쳐 5mW 이상의 gyro 출력광 power와 7nm의 파장선폭을 얻었다. Loop 광섬유로부터 광증폭기형 광원으로의 feedback으로 인하여 회전속도에 따라 scale factor가 변화함을 관찰할 수 있었다. 그러나 변조된 gyro 출력신호광의 평균 power가 회전속도에 무관하도록 위상차의 변조진폭을 $\PHI_m=2.405 rad$으로 한 경우에 회전속도와 무관한 일정한 scale factor를 얻을 수 있었다.

• The Transactions of the Korea Information Processing Society
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• v.6 no.4
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• pp.1136-1142
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• 1999

A difficulty of the visual inspection for translated, magnified and rotated objects exists owing to the limitation of recognition rate. In this paper, we perform to define Integral Logarithm Transform(ILT), to consider its characteristic for implementation of Translation-, Magnification- and Rotation-invariant inspection system, and to compare with other methods in inspection error rate. By using magnification and rotation invariance properties of ILT, it makes easier than other methods to extract the rotation degree. The new method employs the ILT for the good/bad inspection of translated, magnified and rotated objects and experiment is performed to achieve translation, magnification and rotation invariance. In other methods both magnification and rotation invariance can't be available. As the result of he experiment, it is not better than the self-organizing map in the improvement of recognition rate, but it shows us the possibility to be used as a tool for the good/bad inspection system.

• Korean Journal of Agricultural Science
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• v.15 no.1
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• pp.36-46
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• 1988

Twelve soybean cultivars were cultivated in the 1/2,000a. Wagner pots with irrigation and without irrigation for 30 days after flowering, and the differences of plant growth and bean yield among cultivars were compared. And to investigate the varietal differences in the rate of photosynthesis under different relative humidity, 6soybean cultivars were cultivated in 1/2,000a. Wagner pot and the rate of photosynthesis of each soybean cultivar at flowering time was measured under the relative humidity of 80, 70, 60, 50 and 40%. The results obtained are summarized as follows; 1. The days to maturity of the soybean cultivars were shortened by non-irrigation treatment. The response of the maturing dates to non-irrigation was significantly different among the soybean cultivars. The days for maturing of Paldal, Danyeob and Eundaedu were delayed 2 days but those of Jangbaek and Tamahomare were delayed about 7 to 8 days under non-irrigation treatment. 2. The stem length, stem diameter, number of nodes of the mainstem, number of branches and number of branch nodes of all soybean cultivars were decreased by non-irrigation treatment. The number of branches and the number of branch nodes were especially severely influenced by non-irrigation treatment. 3. The number of pods per plant and the number of perfect pods was significantly reduced by non-irrigation treatment but the number of imperfect pods was increased. The non-irrigation treatment reduced the number of pods per plant by 58.0% and the ratio of the number of the perfect pods per plant by 46.6% relative to the ordinary cultivation with irrigation. 4. The grain yield of all cultivars was significantly reduced by the non-irrigation treatment, and average grain yield of soybean cultivars cultivated under non-irrigation treatment was 35.9% of that of soybean cultivars cultivated with irrigation. The influence of non-irrigation treatment was lowest in Paldal and significantly high in Tamahomare and Jangbaek. 5. The rate of photosynthesis of soybean leaves was significantly different among cultivars and was also influenced by relative humidity. Ratio of the photosynthetic amount of soybean leaves at 40% RH to the maximum photosynthesis at optimal humidity was 97.2% in Paldal, 96.4% in Danyeob and 88.8% in Baekun. 6. At 40% relative air humidity, highly significant correlations were found among the photosynthesis rate, the amount of transpiration and the respiration rate.

• Korean Journal of Medicinal Crop Science
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• v.4 no.3
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• pp.205-211
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• 1996

The study was conducted to determine the effects of an optimum irrigation time as af­fected by the different soil textures in Dioscorea batatas DECNE. Water content change was decreased fol­lowing orders, non - irrigation > July 15 > Aug. 15 > irrigation of two times (July 15 following Aug. 15). It was appeared that sandy loam texture was sharply decreased compared with the loam texture in water loss. Dan-Ma was preemergenced about 6 to 8 days without soil texture. Epiphytic amounts in both Dan-Ma and Jang-Ma were about two times increased at tubberous fomation and enlargement stages comparing non - irrigation. In tuber yield without soil texture, Jang-Ma was increased compared with Dan-Ma and tuber yield in loam soil texture was promoted. As a result, it was concluded that sandy loam texture has more compatible than loam soil texture.