• Korean Journal of Breeding Science
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• v.40 no.4
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• pp.507-511
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• 2008

A new mungbean cultivar "Sohyeon" (Vigna radiata (L.) Wilczek) was bred from the cross between "Suwon28" and "KM94004" at the Jeollanamdo Agricultural Research & Extension Services (JARES) in 2006. "Sohyeon" has erect type, heart shape leaflet, green hypocotyl, black and straight pod when matured, and dull green seed surface. This new cultivar shows 42 g per a thousand seed weight. And sprout yield was up to 9% more than that of comparison cultivar "Owool". It contains 12.0, 12.4 mg/g of vitexin and isovitexin, respectively, which was shown about 38, 31% more than comparison cultivar. It shows resistance to mungbean mottle virus, cercospora leaf spot, and powdery mildew in the normal cultivate condition. The average yield of this cultivar shows 1.62 ton/ha, which was 7% more than comparison cultivar.

• The Bulletin of The Korean Astronomical Society
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• v.46 no.2
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• pp.65.1-65.1
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• 2021

The Donggungilgi (東宮日記) is the daily records of the Siganwon (侍講院), which was a royal office in the Joseon dynasty that took charge of the education for the crown prince who dwelled in the Donggung (East Palace). This literature contains records of meteorological and astronomical observations as well as educational matters. The Sohyeon-Donggungilgi (昭顯東宮日記) includes records from 1625 to 1645, when Prince Sohyeon, the first son of King Injo (仁祖), was the crown prince. We investigate the records of solar halo observations in the Sohyeon-Donggungilgi. For consistency, we restrict our investigation to the period before the second Manchu invasion of Korea (i.e., 1625 to 1635). We extract 2,684 records and classify them into ten events according to the terms in their descriptions. The largest and smallest number of observation records are for the Hun (暈) and Geuk (戟) events (1,794 and 7 records, respectively). To verify what each event represents in modern atmospheric terms, we refer to historical documents of the Seoungwanji (書雲觀志, Treaties on the Bureau of Astronomy) and Cheonmundaeseong (天文大成, Great Achievements in Astronomy). We also calculate the solar altitude based on the observation hour and compare the descriptions to compute simulations provided by Arbeitskreis Meteore e.V.. We find that the descriptions of the Hun, Junghun (重暈), Yi (珥), and Baekhonggwanil (白虹貫日) events indicate a 22˚ halo, 22˚ and 46˚ halos, a parhelion, and a parhelic circle, respectively, Alternatively, we estimate that the Gwan (冠), Dae (戴), Bae (背), Li (履), and Gyohun (交暈) events describe arcs tangent to a 22˚ or 46˚ halo such as a upper or lower tangent arc, a circumzenithal arc, or a parry arc. We suggest that further studies are required for the Geuk event because the descriptions of this event differ from both documents referred to this study. In the sense that the number of observation records of the Geuk event is the smallest, however, this event may describe a rare phenomenon. We believe that this work will contribute to the study of historical records of solar or lunar halos.

• Korean journal of food and cookery science
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• v.28 no.5
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• pp.605-612
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• 2012

In comparison of the antioxidant activities by the different extraction methods of the domestic mung bean varieties, 'Geumsung', 'Dahyeon', 'Sohyeon', and 'Eohul', were soaked and dehulled, with the extracts obtained by using 80% ethanol at room temperature or heated. The mung bean hull was freeze-dried, ground, and passed through 100 mesh sieve. The moisture content of the hull powder ranged from 1.70 to 3.15%. The total dietary fiber content ranged from 84.42 to 88.47%, with the Sohyeon hull showing the highest value. The L value of Geumsung hull (62.93) was the highest, and the a value of Sohyeon hull (-1.69) was the lowest (p<0.05). The color difference was the highest in Dahyeon hull (42.52) and lowest in Geumsung hull (38.52). The Eohul hull's chlorophyll a and b contents were the highest with the 80% ethanol extract by heating (10.55 and 6.12 ${\mu}g/mL$, respectively), but the Sohyeon hull showed the highest in 80% ethanol extract at room temperature (7.63 and 3.93 ${\mu}g/mL$, respectively). The total phenolic and total flavonoid contents of the ethanol extracts were significantly different between the varieties regardless of the extraction temperature. The hull extract from the heating extraction was higher in Eohul than in other varieties, and was the lowest in the Dahyeon variety. The extract from Sohyeon hull at room temperature showed the highest contents of total phenolic and flavonoid contents. In the mung bean hull extract by heating, DPPH and ABTs radical scavenging activity ranged from 13.49-16.75% and 22.93-39.42% respectively and those at room temperature ranged from 39.86-41.88% and 49.71-70.92%. The reducing powers of extracts by heating ranged from 7.29 to 9.36 mg BHT/g hull, and at room temperature, they ranged from 19.90 to 20.97 mg BHT/g hull. Our results indicate that different extraction methods influenced antioxidant activities in the domestic mung bean varieties.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.05a
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• pp.340-341
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• 2018

본 논문에서는 음성인식의 성능을 높이기 위해 잡음을 제거하여 음성을 향상시킬 목적으로 심화신경망 기반의 강화학습을 적용한 음성향상 기법을 제안한다. EVRC를 통해 잡음을 제거한 후 강화학습을 적용하여 성능을 비교하며 기존의 음성향상 기법보다 향상된 성능을 가지는 모델을 구현하고자 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.365-367
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• 2019

본 논문에서는 USB의 분실 및 도난과 같은 취약점과 데이터의 유출로 인한 피해를 해결하기 위해 USB에 지문인식 장치를 결합한 지문인식 USB를 연구하여, 기존의 지문인식 USB보다 지문 인식률을 높임으로 오류를 줄여 장점을 키우고 일반인이 사용하기 쉽도록 등록방식을 변환한 지문인식 USB를 설계하였다.

• International Journal of Internet, Broadcasting and Communication
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• v.14 no.2
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• pp.147-161
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• 2022

Video on demand (VOD) platforms provide immersive, inspiring, and commercial-free binge watching experiences. Recently, the number of these platform users increased dramatically as users can enjoy various contents without physical and time constraints during COVID-19. However, such platforms do not provide sufficient video censorship services while there is a strong need. In this study, we investigated the users' desire for video censorship when choosing and watching movies on VOD platforms, and how video censorship can be applied to different types of scenes to increase the censoring effect without diminishing the enjoyment. We first conducted an online survey with 98 respondents to identify the types of discomfort while watching sexual, violent, or drug-related scenes. We then conducted an in-depth online interview with 18 participants to identify the effective video filtering types and regions for each of the three scenes. Based on the findings, we suggest implications for designing a censor application for videos that contain uncomfortable scenes.

• Journal of the Semiconductor & Display Technology
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• v.21 no.2
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• pp.45-50
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• 2022

The etching with high selectivity of silicon dioxide over silicon nitride is essential in semiconductor fabrication, and gas phase etch (GPE) can increase the competitiveness of the selective dielectric etch. In this work, GPE of plasma enhanced chemical vapor deposited SiO₂ was performed, and the effects of process parameters, such as temperature, partial pressure ratio, and gas supply cycle, are investigated in terms of etch rate and within wafer uniformity. Employing multiple regression analysis, the importance of each parameter elements is analyzed.

• Annals of Clinical Neurophysiology
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• v.24 no.2
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• pp.73-78
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• 2022

Some cases of myasthenia gravis (MG) with abnormal spontaneous activity (ASA) in needle electromyography (EMG) have been reported, but the associated clinical characteristics remain to be fully elucidated. We report the case of a 36-year-old male with MG in whom ASA was observed. This study highlights that ASA may appear in needle EMG in patients with severe MG who predominantly have bulbar and/or respiratory involvement. Care is needed because this often accompanies myopathic features and can be misdiagnosed as myopathy.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2022.11a
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• pp.196-198
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• 2022

코로나19의 여파로 E-sports 산업이 가파른 성장세를 보이고 있다, 하지만 현재 E-sports만을 중계하는 OTT 플랫폼은 전무한 실정이며, 기존의 E-sports 중계는 전문 선수들의 경기를 옵저버가 잡아주는 화면만으로 시청 가능하다는 한계가 존재한다. 따라서 본 논문에서는 '자율 선택형 멀티뷰 시스템'을 도입하여 보다 몰입도 높은 E-sports 경기를 제공하고, 직관적인 인터페이스로 누구나 쉽게 이용 가능한 E-sports OTT 플랫폼 시스템을 제안한다.

• Analytical Science and Technology
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• v.36 no.4
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• pp.191-197
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• 2023

Radioactivity concentrations for natural radionuclides were determined from fine dust samples collected in Jeju, Korea according to atmospheric events (Asian dust, haze, fog-mist, and non-event), and radium equivalent activity was calculated. The mean atmospheric radioactivity concentrations for ²³⁸U, ²³²Th, and ⁴⁰K in 127 fine dust samples were 0.49, 0.24, and 7.23 µBq m^-3, respectively, and the radium equivalent activity was 33.25 Bq kg^-1. The mean concentrations of ²³⁸U and ²³²Th in the fine dust during the Asian dust period were 1.31 and 1.60 µBq m^-3, respectively, above the global average, while the values for the other three atmospheric events were lower. The ratio of ²³²Th/²³⁸U radioactivity during the Asian dust period was 1.22, higher than the ratio for the other three atmospheric events.