• The Korean Journal of Mycology
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• v.20 no.4
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• pp.285-288
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• 1992

The species of genus Tylopilus were collected from the areas around Kwangrung, Kapyung, and Mt. Backyang in Korea from 1988 to 1991. Description and illustrations of noteworthy three taxa of Genus Tylopilus were made during this period. T. ballouii, T. ferrugineus and T. castancieceps are newly described in Korea.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.13-16
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• 2018

인공지능의 중요성과 가치가 대두됨에 따라 이를 활용하여 다양한 챗봇들이 개발되고 있다. 그러나 신조어를 의미를 제공하는 챗봇 시스템의 연구가 부족하다. 본 논문에서는 Watson Assistant를 활용하여 신조어의 의미를 제공하는 신조어 챗봇 시스템을 구현하고자 한다. Watson Assistant는 자연어 형식으로 된 질문에 응답하는 것을 지원하는 API다. 웹 크롤링을 통해 신조어 데이터를 수집 및 저장하고, Watson Assistant를 활용하여 사용자의 의도를 파악하여 신조어의 의미를 추출한다. 제안한 시스템을 통해 현실 세계에서 끊임없이 양산되는 신조어의 의미를 빠르게 파악할 것이라고 기대한다.

• The Journal of the Petrological Society of Korea
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• v.21 no.3
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• pp.335-365
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• 2012

Fission-track (FT) thermochronological records from SE Korean Cretaceous-Paleogene granitic plutons in different fault-bounded blocks reveal contrasting cooling and later thermal histories. Overall cooling patterns are represented by a monotonous (J-shaped) curve in most plutons except some Cretaceous granites retaining a complicated (N-shaped) path due to post-reset re-cooling. Discriminative cooling rates over different temperature ranges can be explained for individual plutons with respect to relative pluton sizes, differences in initial heat loss depending on country rocks, and the presence and proximity of later igneous activity. Even within a single batholith, cooling times for different isotherms were roughly contemporaneous with respect to positions. Insignificant deviations in cooling ages from two different plutons in succession across the Yangsan fault may suggest their contemporaneity before major horizontal fault movement. The extent of later thermal rise recorded locally along the Yangsan and Dongnae fault zones were reached the Apatite Partial Stability Zone ($70-125^{\circ}C$), but did not exceed $200^{\circ}C$. Thermal alteration from fractured zones in the Yangsan-Ulsan fault junction may suggest a thermal reset above $290^{\circ}C$ resulting a complete reset in FT sphene age (31 Ma), caused by a tectonic subsidence in Early Oligocene. A consistency in FT zircon/apatite ages (24 Ma) may imply a sudden rapid cooling over $200-105^{\circ}C$, plausibly related to the abrupt tectonic uplift of the Pohang-Gampo Block including the fault junction in Late Oligocene. A remarkable trend of lower cooling ages for $300-200-100^{\circ}C$ isotherms (i.e., 19% for FT sphene and K-Ar biotite; 20% for FT zircon; 27% for FT apatite) from the east of the Ulsan fault (Pohang-Gampo Block) comparing to the west of the fault may be attributed to retarded cooling times from the Paleogene granites and also reflected by their partially-reduced apatite ages due to later thermal effects.

• Journal of the Korean Society of Radiology
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• v.13 no.1
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• pp.141-146
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• 2019

Radiation sources used in the field of industrial non-destructive pose a risk of exposure due to ageing equipment and operator carelessness. Thus, the need for a safety management system to trace the location of the source is being added. In this study, Monte Carlo Simulation was performed to analyse the angle dependence of the unit-cell comprising the line-array dosimeter for tracking the location of radiation sources. As a result, the margin of error for the top 10% of each slope was 5.90% at $0^{\circ}$, 8.08% at $30^{\circ}$, and 20.90% at $60^{\circ}$. The ratio of the total absorbed dose was 83.77% at $30^{\circ}$ and 53.36% at $60^{\circ}$ based on $0^{\circ}$(100%) and showed a tendency to decrease with increasing slope. For all gradients, the maximum number was shown at $30^{\circ}$ No. 9 pixels, and for No. 10, there was a tendency to drop 7.24 percent. This study has shown a large amount of angle dependence, and it is estimated that the proper distance between the source and line-array dosimeters should be maintained at a distance of not less than 1 cm to reduce them.

• Journal of the Korean Society for Library and Information Science
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• v.25
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• pp.415-444
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• 1993

Chiyou Park(박치유) published Bang-kak-bon(방각본) at Taein(태인) between 1799-1806 with Ichae Jun( 전이채). They published Sa-yo-chwi-sun(사요취선) and Sa-moon-you-chwi-cho(사문류취초) in 1799. Between 1800-1806 they published Taemyongyoolsi(대명율시). Kongjatongki(공자통기). Hyokyongtaei(효경대의), Tongjaseup(동자습), Komoonchunchip(고문전집), Kongjakao(공자가어), Nongkachipsung(농가집성), and Koohwangcharlyo(구황촬요) until they departed each other in publication of Bang-kak-bon(방각본), In 1823 Chiyou Park(박치유) published again Sayochwisun(사요취선) at Kookockchae (구곡제). He published Taeseungkisinronsopilsacki(대승기신논소필삭기) and Chackpupkwikam(작법구감) between 1815-1827 with Backpataesa(백파대사) who was a Buddhism Monk of Woonmoon-am(운문암) in Backyang Mountain(백양산), Backpataesa(백파대사) was born in 1767, became a monk in 1784 and died in 1851. Backpa(백파) was a famous Budhism scholar who disputed the truth of Zen (선) with Choosa, Chunghee Kim We (추사김정희). He rewrote Taeseungk.isinronso-pilsacki(대승기신논소필삭기), Chackpupkwikam (작법구감), and Zenmoonsookyong (신문수경). Chasun (자선) of Songdynasty (송조) rewrote Pilsakcki(필삭기) before Backpa(백파), which was published at Myouduck-am(묘덕암) of Myongdynasty(명조). It was republshed in Korea several times which are called Sankyesa Copy(쌍계사본) of Back-am(백암), Suckwangsa Copy(석왕사본) of Hamwol(함월), Bongchungsa Copy(봉정사본) of Hoeun(호은), Woonmoon-am Copy(운문암본) of Backpa(백파). Chackpupkwikam(작법구감) is a book of Buddism worsip form which was made of Chaepanmoon (제반문), Paneumchip(범음집), Chineunchip진음집). As a Bangkakbon(방각본) publisher, Chiyou Park believed in Buddhism so heartily that be published Bangkakbon(방각본) and Amkakbon(암각본) which are saved until today.

• Journal of the Korean Society of Safety
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• v.33 no.4
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• pp.84-89
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• 2018

The number of landslides has increased since the 2000s due to the increased frequency of heavy rainfall caused by abnormal weather. A variety of debris flow prevention facilities have been installed as a countermeasure against this problem. However, it is not easy to evaluate the efficiency of debris flow prevention structures except for the structures with constant volume such as the erosion dam, because the other structures are limited to be reproduced in simulation program for debris flow. Therefore, the methods by which the debris flow prevention structures were modeled were proposed, and the efficiency of four prevention structures installed in Baekyang Mt. in Busan was evaluated with UDS, which accuracy had been verified, using these methods. The initial amount of debris flow was determined based on landslide which occurred in 2014, and specifications of the complex retaining walls around the settlements were measured and applied modeling for terrain. The numerical results showed that the efficiency of debris flow prevention structures could be quantitatively presented. Among the debris flow prevention structures installed in Baekyang Mt., prevention structure of barrier type for debris flow was the most efficiency and debris flow prevention device was the lowest efficiency when the only depth of debris was evaluated. It seems that this study is meaningful to propose the methods which were used to model the debris flow prevention structures that could not be reproduced in most 2D debris flow numerical analysis programs. If precise verification of the presented methods is carried out, it will be possible to provide clear criteria for the efficiency evaluation method of disaster prevention structures.

• KSBB Journal
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• v.11 no.6
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• pp.689-695
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• 1996

Harringtonine and homoharringtonine known as anti-cancer agents were isolated from Korean native plumyew(Cephalotaxus koreana) using column chromatography(CHCl3:MeOH=19:1, Rf=0.28). The structure of the mixture of two compounds was characterized by 1H-NMR. Comparison of our spectra of harringtonine and homoharringtonine with previously reported ones indicated that the two are identical. The contents of harringtonine and homoharringtonine in the needles, stems, and roots of Korean native plumyew were determined by high performance liquid chromatography(HPLC). The contents of both compounds varied with the site of location and the part of plant. The content of harringtonine was higher in needles and roots than in stems, whereas the content of homoharringtonlne was lower than harringtonine. Homoharringtonine contents in needles at Mt. Palgong, Mt. Dukyu, Mt. Baekyang, Mt. Jiri, and Namhae were higher than in stems and roots. But homoharringtonine contents in needles al Mt. Jokye and Jindo were lower than in stems and roots.

• Journal of Energy Engineering
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• v.20 no.2
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• pp.109-122
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• 2011

The production capacity of EV models should be sufficient to achieve the goal of one million EVs by 2015. Large-Format lithium-ion battery are expected to find a prominent role as ideal electrochemical storage systems in traction power train for sustainable vehicles such as all-electric vehicles. This review focuses first on the present status of production lithium-ion battery technology and cooperative relations of between battery and EV makers, then on its near future development.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.02a
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• pp.48-48
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• 2010

산화물 반도체를 이용한 TFT는 비교적 우수한 특성과 더불어 간단한 구조와 공정으로 양산성 확보에 유리한 측면 때문에 많은 주목을 받고 있다. TFT-LCD의 경우에는 기존에 사용되고 있는 a-Si;H TFT에 비하여 10배이상 우수한 이동도를 가진 산화물 TFT를 이용하여 고속동작 패널을 구현할 수 있을 것으로 보이며, AMOLED의 경우에는 poly-Si TFT에 비하여 대면적 공정에서 유리한 측면이 있을 수 있다. 이러한 산화물 반도체 TFT를 상용 디스플레이 패널에 적용하기 위해서는 소자 안정성을 좀더 확보해야 하는 숙제가 남아있다. 한편, 산화물 반도체 TFT는 가시광선 영역에서 투명한 특성이 가지고 있기 때문에 이를 이용하여 투명 디스플레이(투명 AMOLED)를 개발하는 경우 투과도를 크게 증가시킬 수 있는 장점을 가지고 있다. 기존의 투명 디스플레이는 주로 투사방법을 이용하여 구현되었지만, 최근 AMOLED를 이용한 투명 디스플레이 시제품이 시연되고 있다. 투명한 AMOLED를 구성하기 위해서는 OLED뿐만 아니라 백플레인에서의 투과도 증대를 위하여 해결해야할 여러 가지 문제가 발생하게 된다. 본 발표에서는 산화물 TFT에서의 최근 이슈에 대해 살펴보고, 투명 디스플레이에의 적용에 있어서 해결해야 할 문제점에 대해서도 살펴보고자 한다.

• Journal of Korean Foot and Ankle Society
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• v.25 no.1
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• pp.6-9
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• 2021

The term chronic lateral ankle instability (CLAI) embraces a spectrum of conditions that involve functional and mechanical instability, both in athletes and lower-demand patients. The hallmarks of CLAI are recurrent sprains, persistent pain, and repeated episodes of the ankle giving way. CLAI is the main complication of acute ankle sprains, which can cause discomfort in daily and sports activity. Approximately 10% to 30% of patients with acute ligament ruptures will develop chronic instability over the course of a year from the index injury. An accurate diagnostic approach and successful treatment plan should be established based on a comprehensive understanding of the concept of functional and mechanical instability. Unfortunately, the optimal modality for the management of CLAI is unclear. Even after conservative treatment or surgical intervention, it could result in degenerative changes to the ankle joint in the long term. Thus far, the incidence of ligamentous posttraumatic ankle osteoarthritis was reported to be 13% to 78%. The mean latency time between injury and osteoarthritis was at least 10 to 34.3 years. CLAI is an important pathological condition that can cause discomfort or dysfunction in daily activity in the short term, resulting in joint destruction in the long term. Therefore, it is important to understand the various complications that can occur when CLAI is not treated properly.