• Progress in Superconductivity and Cryogenics
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• v.16 no.4
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• pp.62-65
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• 2014

To minimize most heat loss of current lead for high-temperature superconducting (HTS) rotating machine, the choice of conductor properties and lead geometry - such as length, cross section, and cooling surface area - are one of the various significant factors must be selected. Therefore, an optimal lead for large scale of HTS rotating machine has presented before. Not let up with these trends, this paper continues to improve of diminishing heat loss for HTS part according to different model. It also determines the simplification conditions for an evaluation of the main flux flow loss and eddy current loss transient characteristics during charging and discharging period.

• Journal of Plant Biotechnology
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• v.37 no.4
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• pp.400-407
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• 2010

Zoysiagrass (Zoysia japonica Steud.), also called Korean or Japanese lawngrass, is the most popular warm-season turfgrass in Korea and is widely used for home lawns, parks, roadsides, golf courses and athletic fields. Its use is rapidly expanding in Korea and the other countries, due to its excellent characteristics which include tolerance to heat, drought and salinity. As the utilization area of this turfgrass increases, there is an increase in the demand for improved cultivars with disease and insect tolerance or with herbicide-tolerance or with extended greening periods. Conventional breeding methods have been used to improve the traits described above with limited success. However, with the advances in biotechnology, genetic transformation can be utilized for turfgrass improvement. In this paper, we review recent progress in biotechnological improvement of zoysiagrass and discuss future molecular breeding of this species.

• Mood & Emotion
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• v.16 no.3
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• pp.163-168
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• 2018

Objectives : The purpose of this study was to examine effects of traumatic experiences in childhood, on depressive symptoms of college students, and to determine how depression depended on positive psychological resources. Methods : A total of 430 students were recruited, from two universities in Jeju area. All participants completed self-report questionnaires, that included demographic variables, Adverse Childhood Experience (ACE) Scale, Patient Health Questionnaire-9, and Positive Resources Test (POREST). Results : Prevalence of depression was 47.9%, and a total of 133 (30.9%) college students reported traumatic experiences in childhood. Students with depressive symptoms, were likely to report more traumatic experiences in childhood, and less positive psychological resources. Results from regression analyses indicated that, while controlling for a range of demographic variables, positive psychological resources moderated the association, between traumatic experiences in childhood and depression. Conclusion : Based on results, professionals must consider positive psychological and social resources, for treatment to reduce depressive symptoms in patients with history of childhood adversity.

• Journal of Veterinary Clinics
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• v.37 no.6
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• pp.336-338
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• 2020

A 12-year-old female spayed miniature schnauzer with one month history of halitosis had a cylindrical protruding mass about 2 × 2 × 1 cm in size arising from the right palatine tonsil. Histopathologically, tonsillar mass was covered with stratified squamous epithelium and many lymphoid follicles with germinal center were existed in the upper area of submucosa. Numerous variable sized, occasionally cystic dilated vascular channels (thin walled lymphatic channels) lined by flattened, discontinous endothelial cells were widely distributed throughout the core of fibrovascular stroma. According to immunohistochemistry (IHC), lining endothelial cells in vascular channels showed strong immunoreactivities for CD31 and von Willebrand factor. Based on the gross, histopathologic, and IHC findings, the oral mass of dog was diagnosed as tonsillar lymphangiomatous polyp, the second case in a veterinary field.

• Korean Journal of Environmental Agriculture
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• v.41 no.3
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• pp.217-221
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• 2022

BACKGROUND: Gotjawal forest on Jeju Island is characterized by uneven topography that developed as a result of freezing-thawing weathering process and irregular substrates caused by numerous lava-flow collapses. Sanyang Gotjawal, located in southwest of Jeju Island, is a well-developed forest with a long history. In addition to photographs, there is a need for a good way to describe the unique features of Gotjawal, including its geology and vegetation. METHODS AND RESULTS: We illustrated the area's natural features using Clip Studio Paint 1.12.0. To reveal its complexity, we separated the vegetation and geological features in the illustrations. CONCLUSION(S): We drew a cross-section of Gotjawal's unique layers, including lava flows. In addition to an eco-geological approach, we described the dominant vegetation and geological characteristics of the three forest layers (trees, shrubs, and herbs) in Gotjawal.

• Journal of the Korean Society of Costume
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• v.66 no.5
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• pp.113-121
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• 2016

The purpose of this study is to analyze the types and characteristics of wedding ceremony robes in the Jeju area from the 1950's to the 1980's. The analysis used 413 wedding pictures. The results of the study are as follows: 1. The following are the propotion of robe types used wedding ceremonies. 1.0% of Danryeong & Jangot, 6.5% of Danryeong & Wonsam, 1.5% of Danryeong & Chima+Jegori, 2.7% of Durumaki & Chima+Jegori, 24.7% of suit & Chima+Jegori and 63.7% of suit & wedding dress from the 1950's to the 1980's. 2. The Korean-style robes gradually decreased from the 1950's, and disappeared in the 1970's. The Chima+Jegori was introduced in the 1950's, reached its peak in the 1960's and its popularity continued to the 1970's. In the 1980's, after the Korean-style robes disappeared, the western ceremony robes were used in all the ceremonies. 3. After the Western-style robes, in which a bride wears a wedding dress, was introduced in the 1960's, its usage rapidly increased in the 1970's and is still popular today.

• The Journal of the Korea Contents Association
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• v.6 no.8
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• pp.144-156
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• 2006

In order to secure the national competitiveness in the 21st century's frontier knowledge-based information and globalized society, Korea also needs programs to pick out advanced human resources early and educate them systematically. Therefore the education for the gifted in the information science area is very important, in response to the highly developed Information society, nationally, science-gifted education institutes attached to colleges and several institutions for gifted education have selected and educated the gifted in information science. Therefore, this study is intended to survey local elementary school teachers' awareness on elementary information education for gifted and talented students carried out in jeju by the Education Center for Science Gifted and Talented Students of jeju National University and other education institutions for gifted and talented students in the region and thereby suggest strategies for improvement of the education.

• The Korean Journal of Ecology
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• v.7 no.2
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• pp.67-73
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• 1983

Jeju-Do is a volcanic island of which climate is very warm and humid, but Opuntia lanceolata Haw, showing CAM metabolism is growing at Wolyung-Ri, Hanrim-Eup, Jeju-Do. Annual productivity of Opuntia was 696.47g/m2/yr and 533.47g/m2/yr at two populations on the seashore respectively and 414.92g/m2/yr on the basalt wall of a village. Stem area index was 13.74, 6.93, and 9.30 at each population which are higher values than average range of leaf area index. The standing crop was the highest at the second cladode from the cladode showed little difference at most chemical properties of P, K, Ca and Na. Total nitrogen contents were the most at the youngest cladode and the lest at the oldest one. Soils were infertile of which organic contents were 1.5% and 5.0% on the seaside and the basalt wall respectively. The soil on the basalt wall contained little water whose water contents were 0.9% and at seashore population 15.12% of water contents were. Furthermore high exchangeable Na contents in soil added waer deficiency.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.29 no.2
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• pp.55-66
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• 2021

ICAO recommended that airspace monitoring and periodic safety assessments in each Contracting State ensure the stability of the airspace, since reducing the aircraft lateral and vertical separation intervals would rather increase the risk of collision. The target level of safety of the AKARA-FUKUE Corridor at the southern end of Jeju was 247×10^-9. In simple comparison, this means that the risk of an aircraft collision in this area (international safety standards, 5.0×10^-9) is about 50 times higher. The scope of this study is to organize the concept of terms, analyze the air traffic volume, the current status of navigational safety facility usage fees, and investigations of an aircraft collision risk in Jeju southern air corridor. Analyzing government policies and overseas evaluations, revising some of the existing contents, presenting some of the additional contents of new routes, and changing the instrument procedure for Korean-Chinese routes, change of arrive/departure route between Incheon Airport and Shanghai Airport, reduce the risk of aircraft collisions. We hope to restore airspace sovereignty, contribute to policies for the government to take the lead in solving this problem, and expect stability and operational efficiency in air traffic.

• Journal of architectural history
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• v.32 no.1
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• pp.35-45
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• 2023

Bongsu(Beacon Fire Station) is a facility that sends signals with fire and smoke and has been used in Korea since the Three Kingdoms period. This facility was installed to know the north and south crises. This trend continues until the Joseon Dynasty, and it has been somewhat completed in the 17th century. In previous studies, beacon fire was identified mainly from the border area to Hanyang. Based on this, it was classified into Gyeongbongsu, Yeonbyeonbongsu, and Naejibongsu. However, it is difficult to define the characteristics of beacon fire in coastal areas only with this classification. In the case of beacon fire in island areas, there was a tendency to value communication connection within the region rather than connection with the capital. As a case analysis for this, an academic review was conducted with the cases of Ganghwa Island and Jeju Island. As a result, it was confirmed that the role and character of the beacon vary depending on the defense system and the physical distance from the land, even if it has the topographical commonality of the same island.