• Title/Summary/Keyword: island(s)

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In Summer, the Origin of Tsushima Warm Current Water in the Western Channel of the Korea Strait-2 on the Water in the Middle Layer (하계 대한해협 서수도에 유입되는 Tsushima난류수의 기원-2 중층수에 대한 고찰)

  • 윤종휘
    • Journal of the Korean Institute of Navigation
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    • v.14 no.2
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    • pp.61-76
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    • 1990
  • It was found that three different water masses were vertically situated in the western channel of the Korea Strait in summer. Of these water masses , the origin and inflow path of the middle water were discussed and estimated by comparing with water characteristics of neighbouring sea. As a result, (1) the middle water is formed on the continental shelf in the East China Sea by the mixing of the Kuroshio Water and Chinese Continental Coastal Water, (2) the middle water seems intruded through the sea around 127 E west off Kyushu Island and east off Cheju the Island.

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The Study on the Modeling Development of Dwelling House of Islands in the Future Based on the Insularity and the Factor of Traditional Culture (도서성(Insularity)과 전통성에 바탕을 둔 이상적인 도서지역 주거모델 개발에 관한 연구)

  • Kim Ji-Min
    • Journal of the Korean housing association
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    • v.16 no.5
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    • pp.1-12
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    • 2005
  • This paper is architectural paper which has been studied about residential culture of Southwestern Island from 18C to now. It's main object is suggest a new residential type. Contents of research is 1, to survey a history and a cultural environment of island. 2. to survey and rearrange residence(traditional, modem) which has been built from the past to the present, and establish a history of residence and a theory. 3. to search for architectural space, shape(form), and architectural community, etc. which can be continued. 4. to suggests ideal future residence type of islands. Effectiveness of Research is 1. This study suggests a new theory and a new method to the field of residential science, especially to the residence of island area. 2. In this study, traditional theory of residence be reflected in the modern architectural design.

First Report of Phytophthora palmivora in Cheju Island as the Causal Pathogen of Phytophthora Crown Rot of Cymbidium (제주도에서 처음으로 발생한 Phytophthora palmivora에 의한 심비디움 역병)

  • 홍순영;지형진;현승원
    • Korean Journal Plant Pathology
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    • v.14 no.6
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    • pp.725-728
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    • 1998
  • Phytophthora crown rot of cymbidium was observed in Cheju island since June of 1996. The disease initiated at the basal portion of infected plant progressed upward to lower leaves. Soon after distinct water-soaking lesions appeared on lower leaves, the plant was wilted, blighted and died. Four orchid farms at Sogwipo out of 16 surveyed in the island were infected by the disease estimating 5~20% infection rates. The causal fungus was identified as P. palmivora based on following distinguishing characteristics. All isolates were heterothallic as A1 types and readily produced chlamydospores with cultural age. Sporangia were conspicuous papillate, ellipsoidal to ovoid, highly deciduous with short pedicels ca. 3~4 ${\mu}{\textrm}{m}$. Koch's rules were satisfied by a pathogenicity test and re-isolation of the fungus from inoculated plants. The pathogen has never been reported in Cheju island previously and its firstly recorded as the cause of Phytophthora crown rot of cymbidium in Korea.

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Flood Discharge to Decision of Parameters in Han Stream Watershed (한천유역의 홍수량 산정을 위한 HEC-HMS 모형의 민감도 분석)

  • Jung, Woo-Yul;Yang, Sung-Kee;Kim, Dong-Su
    • Journal of Environmental Science International
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    • v.23 no.4
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    • pp.533-541
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    • 2014
  • The streams in Jeju Island have very distinctive hydrological and geological properties and there are a lot of limits in applying the general flood estimation method. This study presented parameters dominant in the Hancheon stream of Jeju Island by analyzing the sensitivity of parameters of HEC-HMS model regarding rainfall events in the target basin, and extracted the optimal parameter(Time of Concentration of Clark Unit Hydrograph: Kraven II method, Storage Coefficient: Sabol method) by analyzing and comparing it with the flood runoff data observed in the site and Jeju Island's observation data.

Airflow modelling studies over the Isle of Arran, Scotland

  • Thielen, J.;Gadian, A.;Vosper, S.;Mobbs, S.
    • Wind and Structures
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    • v.5 no.2_3_4
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    • pp.115-126
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    • 2002
  • A mesoscale meteorological model is applied to simulate turbulent airflow and eddy shedding over the Isle of Arran, SW Scotland, UK. Under conditions of NW flow, the mountain ridge of Kintyre, located upwind of Arran, induces gravity waves that also affect the airflow over the island. The possibility to nest domains allows description of the airflow over Arran with a very high resolution grid, while also including the effects of the surrounding mainland of Scotland, in particular of the mountain ridge of Kintyre. Initialised with a stably stratified NW flow, the mesoscale model simulates quasi-stationary gravity waves over the island induced by Kintyre. Embedded in the larger scale wave trains there is continuous development of small-scale transient eddies, created at the Arran hill tops, that move downstream through the stationary wave field. Although the transient eddies are more frequently simulated on the northern island where the terrain is more pronounced, they are also produced over Tighvein, a hill of 458 m on the southern island where measurements of surface pressure and 2 m meteorological variables have been recorded at intermittent intervals between 1996 and 2000. Comparison between early observations and simulations so far show qualitatively good agreement. Overall the computations demonstrate that turbulent flow can be modelled with a horizontal resolution of 70 m, and describe turbulent eddy structure on wavelength of only a few hundred metres.

Settlement Characteristics of Nanji -Island Refuse Landfill (난지도 쓰레기 매립지의 침하 특성)

  • 박현일;라일웅
    • Geotechnical Engineering
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    • v.13 no.2
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    • pp.65-76
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    • 1997
  • It has been a growing concern how to use Nanji-Island landfill and other refuse landfills located around metropolitan areas. In this paper, settlement characteristics of Nanji -Island landfill were studied by analyzing the data collected over the period of two years. The settlement characteristics were similar to the analyzed settlement characteristics of 24 refuse landfills in the United States. The model proposed by Bjarngard and Edger(1990) model is considered to be suitable for the long-term prediction of Wnil -Island landfill. The ten-year -period prediction value of Bjarngard and Edger (1990) model is considerably different from that of Power Creep Model. If existing settlement models used for long-term prediction of the settlement characteristics of landfill are not analyzed thoroughly there remains the possibility of including considerable prediction errors.

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Integrated Surface-groundwater Analysis in Jeju Island (제주 지역 지표수-지하수 연계 해석)

  • Kim, Nam-Won;Chung, II-Moon;Yoo, Sang-Yeon;Lee, Jeong-Woo;Yang, Sung-Kee
    • Journal of Environmental Science International
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    • v.18 no.9
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    • pp.1017-1026
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    • 2009
  • In Jeju island, the surface runoff characteristics are quite different from those of inland. Most of streams show dried characteristics by means of large portion of recharge which goes to the deep aquifer. For this reason, the accurate estimation of hydrologic components by using watershed model like SWAT is very difficult. On the other hand, the integrated SWAT-MODFLOW model is able to simulate the complex runoff structure including stream-aquifer interaction, spatial-temporal groundwater recharge and so on. The comprehensive results of Pyoseon region in Jeju island show that the amount of groundwater discharge to stream is very small, but it might be added to the discharge into the sea. Statistical analysis shows that SWAT-MODFLOW's results represent better than SWAT's. Also, SWAT-MODFLOW produces a reasonable water budget which shows a quite similar pattern of observed one. This result proves that the integrated SWAT-MODFLOW can be used as a proper tool for hydrologic analysis of entire Jeju island.

A Study of the Dokdo Notation Problem in Terms of Library Materials Organization (자료조직 측면에서 독도표기 문제에 관한 연구)

  • Nam, Tae-Woo;Chun, Mal-Suk;Chung, Yon-Soon;Chang, Ro-Sa
    • Journal of the Korean Society for Library and Information Science
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    • v.42 no.4
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    • pp.291-310
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    • 2008
  • The U.S. Library of Congress proposal to change the subject heading of Tok Island(in Korea called Dokdo) to Liancourt Rocks was controversial. Therefore the status of Dokdo, national notation(Dokdo or Tokdo), and international notation used to identify the island were examined. In this examination, Tok Island's classification in the Korea Decimal Classification(KDC), Library of Congress Classification(LCC), and Nippon Decimal Classification(NDC) were compared and analysed, and a proposal for the role of libraries in the future was given.

Molecular Basis of the Hrp Pathogenicity of the Fire Blight Pathogen Erwinia amylovora : a Type III Protein Secretion System Encoded in a Pathogenicity Island

  • Kim, Jihyun F.;Beer, Steven V.
    • The Plant Pathology Journal
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    • v.17 no.2
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    • pp.77-82
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    • 2001
  • Erwinia amylovora causes a devastating disease called fire blight in rosaceous trees and shrubs such as apple, pear, and raspberry. To successfully infect its hosts, the pathogen requires a set of clustered genes termed hrp. Studies on the hrp system of E. amylovora indicated that it consists of three functional classes of genes. Regulation genes including hrpS, hrpS, hrpXY, and hrpL produce proteins that control the expression of other genes in the cluster. Secretion genes, many of which named hrc, encode proteins that may form a transmembrane complex, which is devoted to type III protein secretion. Finally, several genes encode the proteins that are delivered by the protein secretion apparatus. They include harpins, DspE, and other potential effector proteins that may contribute to proliferation of E. amylovora inside the hosts. Harpins are glycine-rich heat-stable elicitors of the hypersensitive response, and induce systemic acquired resistance. The pathogenicity protein DseE is homologous and functionally similar to an avirulence protein of Pseudomonas syringae. The region encompassing the hrpldsp gene cluster of E. amylovora shows features characteristic of a genomic island : a cryptic recombinase/integrase gene and a tRNA gene are present at one end and genes corresponding to those of the Escherichia coli K-12 chromosome are found beyond the region. This island, designated the Hrp pathogenicity island, is more than 60 kilobases in size and carries as many as 60 genes.

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Competitive Efforts Regarding the South Pacific Islands by South Korea, Japan and China (동아시아 국가들의 태평양 쟁탈전 : 한국, 일본, 중국의 남태평양 도서국가 외교)

  • Park, Young-June
    • Ocean and Polar Research
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    • v.35 no.4
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    • pp.373-381
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    • 2013
  • The Pacific Island Forum that consists of 14 island countries in the South Pacific has long been the focus of keen attention from East Asian countries such as South Korea, Japan and China. The South Pacific area was controlled by Japan right after the First World War. The League of Nations bestowed the right of trusteeship over the region to Japan, one of the victors in the war. However, the U.S. considered the area indispensible for its security interests in the Pacific after victory in the Second World War. With the end of Cold War period, the region again began to gain the competitive attention of Japan, China and Korea. Japan has made efforts to give economic assistance to this region by holding the Japan-Pacific Islands summit every three years. In addition, Japan is promoting a security engagement with this region by dispatching Self Defense Forces with the aim of initiating construction and development projects. In response to Japan's active involvement in the region, China also began to convene a summit meeting with these countries in 2006, making pledges of economic assistance. Furthermore, Chinese civilian companies struck deals of investment with municipal institutions in the region with a view to enhancing China's influence in the region. Japan's and China's active engagement in the region has galvanized South Korea to craft a more effective strategic approach to the region.