• Journal of Chest Surgery
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• 제25권3호
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• pp.325-329
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• 1992

The thymolipoma is rather rare benign tumor of the thymus. One case of huge thymolipoma, seen in a 11-year-old boy, is presented. It is about 2.16kg. He had some chest discomfort. The chest film showed homogeneous haziness fills the left hemithorax, On chest CT scan, multiple small amorphous soft tissue densities were recognized as islands within a large fatty mass. Tumor resection was performed through left anterolateral thoracotomy. The mass was yellowish soft, measured 29x19Xllcm, 12X7.5x3.5cm, 7.0X3.0X1.0cm. Microscopically, the tumor was comprised of abundant mature adipose tissue and normal thymic tissue.

• 대한지리학회지
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• 제43권2호
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• pp.171-187
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• 2008

섬지역은 작은 규모와 고립된 특성으로 인해 취약한 경제기반으로 특징지워 진다. 여기에 오랜 고립에 따른 독특한 문화와 자연경관은 관광 중심의 개발로 이어지게 된다. 제주도도 세계 다른 섬지역과 마찬가지로 이러한 개발을 경험하는데, 이러한 지역변화는 섬지역의 취약성에 초점을 맞추어 대다수 중앙정부 주도로 이루어진 것으로 지역에서의 대응은 축소되어 이해되고 있다. 본 논문에서는 섬지역 주민들은 자신들의 취약성에 기초해 중앙정부의 정책을 수용하면서 자신들에게 유리하게 변용하는 교호적 전략을 구사해 왔다고 이해한다. 교호적 전략은 3가지 측면에 반영되고 있는데, 첫째 제주도는 국회의원 선거에서 무소속 후보를 선호해 오다 근래에는 여당 후보 그리고 야당 후보를 교대로 선출하는 모습을 보여준다. 둘째 중앙정부의 지역개발정책에 대한 반대운동을 통해 주민생활의 향상과 개선을 반영하는 수정을 요구하여 왔다. 셋째 중앙정부 주도의 개발정책이 효율성을 극대화하는 거점중심의 관광지 개발을 지역의 균형발전 요구로 대응하며 제주전역으로 개발을 확대시켰다. 이러한 개발 과정과 결과는 중앙정부의 관광개발 정책을 견제, 섬으로서의 제주지역의 취약함에서 찾아낸 교호적 전략의 결과로 볼 수 있을 것이다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2013년도 추계학술대회
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• pp.163-164
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• 2013

양방향차도선(CAR-FERRY)은 육지와 도서, 도서와 도서 간을 연결하는 교통수단 기능과 지속적인 해양관광객의 수요증가에 따른 해양관광 연계 연안여객 운송수단 역할을 하고 있다. 이에 따른 양방향 차도선은 이용의 편리성이 증대 되고 접안으로 인한 해양 사고를 줄일 수 있다. 양방향차도선은 등흘수(even) 상태로 프로펠러가 양쪽에 있기 때문에 프로펠러가 소직경 저회전으로 인하여 전진 운항 시에 반력에 의한 축계 및 프로펠러 파손 등이 발생할 수 있다. 이에 따른 엔진 출력, 선형, 비틀림 진동 등에 따른 감속기, 탄성커플링 선정, 횡진동 및 축계정렬(Shaft alignment)을 고려한 축계설계(베어링 수량, 폭, 간격)를 하여 선체의 추진축 1차 지지부의 구조에 대한 건전성을 평가하였다.

• 환경생물
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• 제37권4호
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• pp.526-534
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• 2019

Chlorella gloriosa (Chlorellaceae, Trebouxiophyceae) was isolated from seawater off the coast of the Dokdo Islands in Korea. An axenic culture was established using the streak-plate method on f/2 agar media supplemented with antibiotics, allowing identification of the isolate by morphological, molecular, and physiological analyses. The morphological characteristics observed by light and electron microscopy revealed typical morphologies of C. gloriosa species. The molecular phylogenetic inference drawn from the small-subunit 18S rRNA sequence verified that the microalgal strain belongs to C. gloriosa. Additionally, gas chromatography-mass spectrometry analysis showed that the isolate was rich in nutritionally important omega-3 and -6 polyunsaturated fatty acids and high-performance liquid chromatography analysis revealed that the high-value antioxidants lutein and violaxanthin were biosynthesized as accessory pigments by this microalga, with arabinose, galactose, and glucose as the major monosaccharides. Therefore, in this study, a Korean marine C. gloriosa species was discovered, characterized, and described, and subsequently added to the national culture collection.

• ALGAE
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• 제37권4호
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• pp.249-264
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• 2022

Two genera of the Rhodymeniales, Halopeltis and Leptofauchea, are here reported for the first time from the Hawaiian Islands and represent the deepest records for both genera. Molecular phylogenetic analyses of cytochrome oxidase subunit I (COI), rbcL, and large subunit ribosomal DNA (LSU) sequences for Hawaiian specimens of Leptofauchea revealed one well-supported clade of Hawaiian specimens and three additional lineages. One of these clades is described here as Leptofauchea huawelau sp. nov., and is thus far known only from mesophotic depths at Penguin Bank in the Main Hawaiian Islands. L. huawelau sp. nov. is up to 21 cm, and is the largest known species. An additional lineage identified in the LSU and rbcL analyses corresponds to the recently described L. lucida from Western Australia, and is a new record for Hawai'i. Hawaiian Halopeltis formed a well-supported clade along with H. adnata from Korea, the recently described H. tanakae from mesophotic depths in Japan, and H. willisii from North Carolina, and is here described as Halopeltis nuahilihilia sp. nov. H. nuahilihilia sp. nov. has a distinctive morphology of narrow vegetative axes that harbor constrictions along their length. The current distribution of H. nuahilihilia includes mesophotic depths around W. Maui, W. Moloka'i, and the island of Hawai'i in the Main Hawaiian Islands. Few reproductive characters were observed because of the small number of specimens available; however, both species are distinct based on phylogeny and morphology. These descriptions further emphasize the Hawaiian mesophotic zone as a location harboring many undescribed species of marine macroalgae.

• Parasites, Hosts and Diseases
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• 제54권2호
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• pp.233-238
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• 2016

The 65th Medical Brigade and Public Health Command District-Korea, in collaboration with the Migratory Bird Research Center, National Park Research Institute, conducted migratory bird tick surveillance at Sogugul and Gaerin Islands (small rocky bird nesting sites), Jeollanam-do (Province), Republic of Korea (ROK), on 30 July and 1 August 2009. Breeding seabirds captured by hands in their nesting burrows were banded, identified to species, and carefully examined for ticks during the nesting season. A total of 9 Ornithodoros sawaii larvae were removed from 4 adult Hydrobates monorhis (Swinhoe's storm petrel). The identification of the larvae of O. sawaii collected from migratory seabirds were molecularly confirmed using mitochondrial 16S rDNA primer sets.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 추계학술대회
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• pp.281-285
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• 2006

As the needs of wind energy increase, the more sites for the wind farm are required. As a part of searching for the prominent wind farm site, specially for offshore wind farm, we chose 4 sites along the southern part seashore of JeonNam province based on the analysis of the data gathered by meteorological observatory ud have gathered wind data for more than a year by use of 40m Met masts installed in the representative locations, ie. small islands of 4 different bay area. The siting for the Met masts were very limited by the geographical circumstances The wind data of those areas show a little lower annual average wind speeds, for the wind farm development, of 4m/s to 5.5m/s at the height of 40m above the ground level of the respective islands. The detail figures of one year wind data of those area are presented in this report.

• 한국정보통신학회논문지
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• 제5권2호
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• pp.239-245
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• 2001

모든 국민에 대한 기본통신의 보편적 서비스 제공 정책에 힘입어 일반 공중전화망에 의한 기본 통신 서비스 부문에서의 지역 간의 격차는 상당히 해소되었으나, 최근 정보화가 급격히 추진됨에 따라 고도 정보통신분야의 서비스에 있어서는 지역별로 편중현상이 발생하고 있다. 특히, 도서지역은 환해성과 격리성 등의 지리적 요인 및 인구밀도, 소득 및 통화량 등이 육지에 비해 현저히 낮은 관계로 가입자망 고도화가 이루어지지 않고 있다. 이에 따라 도서지역은 정보화의 소외 지역으로 낡게되어 지역 간의 발전격차가 심화됨은 물론 다가오는 해양시대를 능동적으로 대처하는데 있어서 커다란 문제점을 안고 있다. 본 논문은 현재 우리나라 도서지역 통신망의 구성 운용현황 및 문제점 등을 분석하고 도서 주민에게 고도 정보서비스를 경제적, 효율적으로 제공하기 위한 가입자 망 고도화 방안에 대해 검토하였다.

• Structural Engineering and Mechanics
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• 제88권4호
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• pp.323-334
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• 2023

The submerged floating tunnel (SFT) infrastructure has been regarded as an emerging technology that efficiently and safely connects land and islands. The SFT route problem is an essential part of the SFT planning and design phase, with significant impacts on the surrounding environment. This study aims to develop an optimization model considering transportation and structure factors. The SFT routing problem was optimized based on two objective functions, i.e., minimizing total travel time and cumulative strains, using NSGA-II. The proposed model was applied to the section from Mokpo to Jeju Island using road network and wave observation data. As a result of the proposed model, a Pareto optimum curve was obtained, showing a negative correlation between the total travel time and cumulative strain. Based on the inflection points on the Pareto optimum curve, four optimal SFT routes were selected and compared to identify the pros and cons. The travel time savings of the four selected alternatives were estimated to range from 9.9% to 10.5% compared to the non-implemented scenario. In terms of demand, there was a substantial shift in the number of travel and freight trips from airways to railways and roadways. Cumulative strain, calculated based on SFT distance, support structure, and wave energy, was found to be low when the route passed through small islands. The proposed model helps decision-making in the planning and design phases of SFT projects, ultimately contributing to the progress of a safe, efficient, and sustainable SFT infrastructure.

• IEIE Transactions on Smart Processing and Computing
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• 제2권5호
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• pp.302-309
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• 2013

This paper proposes a mathematical model of Caprine arthritis encephalitis (CAE), which is a disease causing significant economic damage to the goat farming industry, and reports the application of this model to the development of an information management system of animal quarantine to overcome this disease. The mathematical model of CAE was derived from the AIDs model in human case because epidemical characteristics of these diseases including infection pass are similar. This model can be expressed by simultaneous differential equations. Simulations using a new model were performed according Euler's and Runge-Kutta method using numerical analysis software. In each method, strong convergence was observed and the results were similar. The design of an information management system of animal quarantine was proposed as an application of the new model. System design was constructed on the assumption that in subtropical islands, the expected development of information infrastructure and utilization will become valuable in the future.