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이용호,최정은,홍상진,Lee, Yong Ho,Choi, Jeong Eun,Hong, Sang Jeen 한국반도체디스플레이기술학회 2020 반도체디스플레이기술학회지 Vol.19 No.4
With miniaturization of semiconductor, the manufacturing process become more complex, and undetected small changes in the state of the equipment have unexpectedly changed the process results. Fault detection classification (FDC) system that conducts more active data analysis is feasible to achieve more precise manufacturing process control with advanced machine learning method. However, applying machine learning, especially in supervised learning criteria, requires an arduous data labeling process for the construction of machine learning data. In this paper, we propose a semi-supervised learning to minimize the data labeling work for the data preprocessing. We employed equipment status variable identification (SVID) data and optical emission spectroscopy data (OES) in silicon etch with SF6/O2/Ar gas mixture, and the result shows as high as 95.2% of labeling accuracy with the suggested semi-supervised learning algorithm.
이용호(Yong-Ho Lee) · 최재혁(Jae-Hyeok Choi) · 오주성(Ju-Sung Oh) · 손길만(Gil-Man Shon) 한국차학회 2006 한국차학회지 Vol.12 No.2
This study was conducted to find out conditions of green tea processing and the ways to improve managerial condition. In order to carry out this study we looked into 51 farms producing processed green tea(32 farms in 4 myeons, south Gyeongsang province, 2002, and 19 farms in 2 myeons, 2003). The results of survey are summarized as follows: In green tea processing years, the number of farms with less than 10 years was 27 farms (52.9%), and one farm had more than 30 years. Average yield per farm of processed green tea products was 798 kg/year. The invest cost on facilities and equipment ranged from 4,120 thousand won to 38,400 thousand won. Average point in diagnostic evaluation was 59.7 (48.5 to 75.0). It also showed that 26.4% of the farms were unsuitable for green tea planting. Also it indicated that high investment cost in facilities was one of the problems in green tea processing. Therefore small-size processing facilities or cooperative automated processing facilities were suggested. The main problems in marketing were lack of advertising and dealers, and the sudden drop in price. To improve green tea sales, e-com-merce, opening new markets and advertising were suggested. The income rate of farm with the green tea tree-growing area of 0.7ha was 60.3% which was highest rate.
가축분 시용에 따른 짚신나물(Agrimonia pilosa Ledeb.)의 생육 및 수량
이용호(Yong Ho Lee),박정민(Jeong Min Park),이성태(Seong Tae Lee),최주호(Ju Ho Choi),정대수(Dae Soo Chung) 한국자원식물학회 2002 한국자원식물학회지 Vol.15 No.3
본 연구는 가축분 종류 및 시용량이 선학초의 생육, 경엽수량 및 개화반응에 미치는 영향을 구명하여 적정 시용량을 알아보기 위하여 실시하였다. 가축분 종류는 우분, 돈분 및 계분으로 하고 시용량은 10a당 각각 1,000, 2,000, 3,000 kg을 시용하여 시험한 결과를 요약하면 다음과 같다. 1. 시험후 토양특성은 P2O5, K는 우분, 돈분, 계분 순으로 높은 경향이었으며 계분 2,000 kg/10a이상시 용구에서는 적정 인산함량보다 높았다. 2. 주요생육은 우분, 돈분 및 계분 모두 2,000 kg/10a 처리구에서 가장 많았으며, 특히 계분2,000 kg/10a에서 가축분 종류간에는 우분〈 돈분〈 계분 순으로 높았다. 3. 전초수량은 돈분 및 계분 2,000 kg/10a 처리구에서 무시용 209 kg/10a에 비하여 각각 82%, 98% 증수되었다 4. 종자의 건물수량은 가축분 종류간에는 우분〈돈분〈 계분 순이었고, 시용량간에는 무처리구 1,000〈 3,000〈 2,000 kg/10a〉순으로 증수되 었다. 5. 개화기는 모든 가축분에서 시용량이 증가할수록 빨라지 는 경향이었고 종실수량은 우분〈 돈분〈 계분 순이었고, 가축분에 관계없이 2,000 kg/10a에서 가장 많았다. This experiment was conducted to find out the effects of livestock excrements application on the growth and yield of leaf, stem and seed in Agrimonia pilosa Ledeb. the results were summarized as follow. In the soil after experiment, P2O5 and K contents were high in order of cattle droping 〈 pig droping 〈 chicken droping treatment. The plant height was increased cattle dropping〈 pig dropping〈 chicken dropping treatment plot. Number of stems was inclined to increase in the plot of 2,000 kg/10a application of chicken dropping and cattle dropping. Number of leaves was also increased 21.8∼51.6% by application 3,000 kg/10a of chicken and cattle dropping, and application 2,000 kg/10a of pig dropping, respectively. Dry weight of aerial part was high in order of 1,000〈 3,000〈 2,000 kg/10a〉control, on occasion 2,000 kg/10a treated, that was highest in the application of chicken dropping. Yield of seeds was also increased to 61% and 86% at the 2,000 kg/10a plot of pig and chicken dropping, respectively. While yield of seeds was increased 50% at the 3,000 kg/10a application of cattle dropping. Flowering ratio was 49.1% in control, 55.6, 58.9 and 68.3% in cattle, pig and chicken dropping with 2,000 kg/10a, respectively, on June 22. Flowering ratio was the highest in the plot of chicken dropping with 2,000 kg/10a.
이용호(Yong-Ho Lee),최재혁(Jae-Hyeok Choi),서광기(Kwang-Ki Seo),신현열(Hyun-Yul Shin),한선경(Seon-Kyeong Han),김성만(Sung-Man Kim) 한국차학회 2009 한국차학회지 Vol.15 No.1
차광 재배가 녹차의 품질과 기능성에 미치는 영향 구명하여 기능성 녹차 생산 공급의 기초 자료로 활용코자 2007년 3월 2일부터 2008년 10월 17일까지 하동군 화개면 운수리 576-2번지 소재 산록경사지의 충적붕적토인 칠곡통 토양에서 수행한 결과는 다음과 같다. 가. ㎡당 신초수는 차광정도가 높거나 처리기간이 길수록 적어지는 경향이었고, ㎡당 생엽수량은 차광 처리기간이 길수록 많아지는 경향이었다. 나. 신초장과 엽장, 엽폭은 차광 정도가 높고 차광기간이 길수록 길었고, 엽면적도 넓었다. 다. 백아중은 100% 차광망 30일 처리구에서 58.8g으로 가장 많았으며 차광정도가 높거나 처리기간이 길수록 무거웠다. 라. 차잎의 일반성분 함량은 차광정도에 상관없이 1년차에는 15일 재배 보다 재배기간이 길수록 회분과 지방함량은 많았으나, 2년차에는 뚜렷한 차이가 없었다, 단백질 함량은 적어지는 경향이었다. 마. K₂O, MgO 성분 함량은 년차간 구분 없이 50% 차광망 15일 처리구에서 가장 많았으나, CaO 함량은 1년차 100% 차광망 30일 처리구에서, 2년차 50%차광 15일 처리구에서 각각 0.50%와 0.76%로 가장 많았고, Na₂O는 처리간에 뚜렷한 차이가 없었다. 바. 100% 차광 15일 처리구에서 Catechin과 EGCG 함량이, 100% 차광 30일 처리구에서는 C가, 무차광 15일 처리구에서 EC와 ECG, Caffeine, Tannin 함량이 가장 많았으나, ECG 함량은 무차광 30일 처리구에서 3.53%로 가장 많았다. 이상의 결과를 보아 가루차나 식품 첨가용 고급 찻잎 생산을 목적으로 재배할 경우에는 신초수량이 많고, K₂O, MgO, Caffeine, EGCG, ECG, Catechin의 함량이 많고 Tannin 함량이 적어지는 차광 재배를 권장함이 바람직함. This study aimed to investigate the influence of shade culture for quality and quantity of tea plant. The obtained conclusions are summarized as follows. Shading degree and duration affected to yield of leaf production negatively, whereas number of green tea leaf was shown converse tendency. The length, width, and area of new leaf were longer and wider in proportion to the shading degree and duration. Hundred buds weight was heaviest by perfect 30 days' shading as 58.8g and was influenced to the strength and duration of those factors. The organic contents of tea leaf such as ash and fats were getting more only in the first year showing no relation with shading degree, however protein was decreased. By 50 percent and 15 days' shading, highest K₂O and MgO contents were detected, while CaO was by perfect 30 days' shading in the first year experiment. Na₂O showed no clear significance by treatments. Catechin and EGCG contents were detected mostly in perfect 15 days' shading, and highest amount for Carbon by perfect 30days' shading, respectively. No shading for 15 days' increased EC, ECG, Caffeine and Tannin contents in tea leaf. While EGC was increased by 3.53 percent with 30 days' free-shading.
이용호(Yong-Ho Lee),송근우(Kun-Woo Song),강동주(Yong-Mo Chung),최주호(Ju-Ho Choi) 한국차학회 2002 한국차학회지 Vol.8 No.3
This study was carried out to investigate genetic relationships among leaf characteristics in collected varieties of native tea, Camellia sinensis var. sinensis, by RAPD analysis. The results can be summarized as follows : Leaf size with outer leaf form was 7.7±3.6x3.5±2.7cm, and large leaf form was much than Yabukita. The size of amplified DNA bands pattern ranged from 300 to 3,000bp, with distinct patterns among different leaf and morphological traits. The mean band number among primer was 5 bands, and total band number among primers ranged from 25 to 178 bands. Genetic similarity between red long-ellipsoidal and the brown wide ellipsoidal small-leaf was represented 0.37 by RAPD-UPGA analysis. But the value of genetic similarity among the reddish brown long ellipsoidal leaf, the reddish brown long-ellipsoidal large leaf, the red wide-ellipsoidal and the red wide-ellipsoidal large-leaf was shown 0.68.