• Title/Summary/Keyword: Kosung

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Thermal-mechanical sensitivity analysis for the near-field of HLW repository (고준위 폐기물 처분장 near-field에 대한 열-역학적 민감도 분석)

  • 권상기;최종원;강철형
    • Tunnel and Underground Space
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    • v.13 no.2
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    • pp.138-152
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    • 2003
  • Three-dimensional computer modeling using FLAC3D had been carried out fur evaluating the thermal-mechanical stability of a high-level radioactive waste repository excavated in several hundred deep location. For effective modeling, a FISH program was made and the geological conditions and rock properties achieved from the drilling sites in Kosung and Yusung areas were used. Sensitivity analysis fer the stresses and temperatures from the modeling designed utilizing fractional factorial design was carried out. From the sensitivity analysis, the important design parameters and their interactions could be determined. From this study, it was found that deposition hole spacing is the most important parameter on the thermal and mechanical stability. The second and third most important parameters were disposal tunnel and buffer thickness.

Reproductive Isolation between Moroco oxycephalus and M. lagowskii (Pisces; Cyprinidae) in Korea

  • Kang, Young-Jin;Min, Mi-Sook;Yang, Suh-Yung
    • Animal cells and systems
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    • v.4 no.2
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    • pp.109-115
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    • 2000
  • To clarify taxonomic status of the two sibling species, Moroco oxycephalus and M. lagowskii reproductive isolation mechanisms were investigated at sympatric area located in Kansung-up, Kosung-gun, Kangwon-do, Korea. Genetic analysis was performed to reveal mating system and intensity of Hybridization between the two species. The frequencies of hybrids were increased since 1989, and then the observed hybrid frequencies ($H_O$) did not significantly differ from the expected hybrid ($H_E$) in 1998 and 1999. However, based on histological analysis of two parents and their hybrid s gonads, the hybridizations between M. oxycephalus and M. lagowskii produced mostly fertile females but sterile males in accordance with Haldane s rule. Although it was suspected that pre- and postmating isolation mechanisms were affected between the two species, M. oxycephalus and M. lagowskii seemed to be strongly isolated with microhabitat at sympatry until 1997. Since 1998, hybrid frequencies were increased by habitat disturbance. However, their hybrid frequencies would be reduced by postmating isolation mechanisms. Therefore, the two species are considered to be distinct species recently diverged.

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Taxonomic Identities and Distribution of Utricularia japonica and U. tenuicaulis in Korea (한국산 통발(Utricularia japonica)과 참통발(U. tenuicaulis)의 분류학적 실체 및 분포)

  • Na, Sung Tae;Choi, Hong-Keun;Kim, Young Dong;Shin, Hyunchur
    • Korean Journal of Plant Taxonomy
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    • v.38 no.2
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    • pp.111-120
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    • 2008
  • Taxonomic identities of Utricularia japonica and U. tenuicaulis were examined. Utricularia japonica was differed from U. tenuicaulis by having a scape narrower than the stem, rather sparsely arranged leaves, and more or less oblong leaves. Utricularia japonica has been known to occur widely in Korea due to the misidentification of U. tenuicaulis, which is distributed widely in southern and middle Korea. However, only one population of U. japonica was found in Chunjin Lake, near Kosung-gun, Kwangwon-Do, in Korea.

The Infection status of Sparganum and Gnathostoma in Frogs of southern part of Korea (한국 남부지방 개구리에 기생하는 Sparganum과 Gnathostoma의 감염실태에 관한 조사보고)

  • 김창환
    • Parasites, Hosts and Diseases
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    • v.21 no.1
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    • pp.83-86
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    • 1983
  • A survey on the infection status of Sparganum and Gnathossoma in frogs was carried out in 11 areas in Gyeongsangnam-do and Cheonlanam-do province, a southern part of Korea. 1. Among 626 frogs examined, 4% were infected with Sparganum, but none with Gnathostoma. The infection rates of Sparganum were variable according to the areas. Those from Kimhae, Sunchon, Jinhae, Sachun, Kosung, Keoje, and Hadong were 16%, 9.1%, 9.1%, 4.1%, 2%, 2%, and 1.5% respectively, but frogs from Hapchun, Kwangju, Namwon and Sanchung were not found infected. 2. Rana nigromaculata was the only species infected with Sparganum. Rana rugesa and Bombing orientalis were not infected. 3. Sparganum was mainly found in the legs and the trunk of frog. About 92.5% of worms were detected in the femoral intermuscular connective tissue. 4. Number per infected frog was in range of one to five, and 2.8% of frogs were inacted by only one worm. 5. The heavier the frog weight, the higher the infection rate of Sparganum. In frogs of 51~60grams, 28.6% were infected.

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Water Mass Stability of Deep Ocean Water in the East Sea (동해 심층수의 수괴 안정성)

  • Moon D.S.;Jung D.H.;Shin P.K.;Kim H.J.
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2004.05a
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    • pp.285-289
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    • 2004
  • Oceanographic observation and qualitative analysis for deep ocean water in the East Sea were carried out from January 2003 to January 2004, in order to understand the characteristics of deep sea water in the East Sea. Temporal and spatial variation of water masses were discussed from survey of the study area including the coastal sea of Kwangwon province in where the polar front mixing cold and warm water masses were formed. On the basis of the vertical profiles of temperature, salinity and dissolved oxygen, water masses in the study area were divided into 5 major groups; (1) Low Saline Surface Water (LSSW) (2) Tsushima Surface water (TSW) (3) Tsushima Middle Water (TMW) (4) North Korea Cold Water (NKCW) and (5) East Sea Proper Water (ESPW). In winter, surface water in coastal sea of Kwangwaan Kosung region were dominated by North Korean Cold Water (NKCW). As Tsushima warm current were enforced in summer, various water masses were vertically emerged in study area, in order of TSW, TMW, NKCW and ESPW. It is highly possible that the LSSW which occurred at surface water of september is originated from influx of fresh water due to the seasonal rainy spell. Nevertheless water masses existed within surface water were seasonally varied, water quality characteristics of East Sea Proper Water (ESPW) under 300 m did not changed all the seasons of the year.

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Air Passenger Hinterland and Position Changes in Sachon, Korea (사천공항의 지위 변화와 여객 배후지)

  • 한재성;장재구
    • Journal of the Korean Geographical Society
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    • v.34 no.1
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    • pp.47-61
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    • 1999
  • The purpose of this study is to grasp position of Sachon airport-local airport-especially the characteristics of it's air passengers, the distribution of passengers hinterland on their purposes of the travel and on the day of the week, and the spatial structure of hinterland The results is as follows The distribution of the hinterland on the purposes of a passenger's travel shows the hunterland of friend and acquauntance visit is wider than that of business, And the middle level of its size is sightseeing The hinterland of commuting includes only Chinju, so the range of passengers' social activities is wider than that of passenger' economic activities In the distribution of the hunterland on the day of the week, the distnbution of the weekday is wider than that of the holidays, but the passenger travel to Chinju is concentrated on the holidays. As rnentioned adove, the hinterland centenng around Sachon airport is Chinju sity field. Tongyoung. Sachon and Koje city field, Kwangyang city and Namhae, Sanchong, Kosung, Hadong, Uiryoung county field. It is a little different result from the area of reverse commuting of the elementray, middle and high school Leachers living in Chinju That's because air passenger travel mainly occurs in industrial and sighrseeing cities

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Facial Asymmetry Found in Facial Masks (탈에서 찾아 본 얼굴비대칭: 얼굴비대칭 환자들은 사회로부터 어떤 대우를 받았을까?)

  • Hwang, Kun;Hwang, Pil Joong;Kim, Yeon Soo
    • Archives of Craniofacial Surgery
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    • v.11 no.2
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    • pp.69-72
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    • 2010
  • Purpose: All masks are created by craftspeople. Accordingly, most masks are generally predictable in dimensions, and the portraitures usually depict the faces and heads of humans. The authors found some masks representing the features of facial asymmetry, such as hemifacial microsomia and rerely lateral facial cleft. Methods: Reviewing the legends of wearing masks with a medley of grotesque features, the authors could deduce the tone of society in those days. Results: A mask, 'crooked mouth', of Native Americans shows typical lineament of hemifacial microsomia. The deformity of the face was legendarily regarded as resulting from trauma caused by either 'one's fault' or a 'curse of God'. 'Grandmother' mask, used in the Korean masque dance of the Kosung province and Sooyoung province also shows the typical features of hemifacial microsomia which represent the old, deserted wife. 'Kori sanni yakka' mask in Sri Lanka, shows the facial asymmetry. In the legend, the child who became demon captured humans and caused illness through wind, phlegm, and bile to revenge on his father who killed his mother by deception of her maid. Conclusion: The authors presume that the victims of severe facial asymmetry were treated contemptuously at that time.

Coastline Change Detection Using CORONA Imagery (CORONA 위성영상을 이용한 동해안 해안선 변화탐지)

  • Kim Gi Hong;Choi Seung Pil;Yook Woon Soo;Song Yeong Sun
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.23 no.4
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    • pp.419-426
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    • 2005
  • Recently the interest in coast area has been increased in the view of management and usage of national territory. Rapid coastal development has caused directly or indirectly coastline changes which may make environmental problems or threaten the nearby residents' livelihood. CORONA was one of the US satellite reconnaissance programs, and it's imagery provides informations about past coastline with high resolution. In this study, we applied rigorous geo-referencing algorithm to CORONA imagery in order to generate the mosaic image of the East coast area of 1969 with 20m accuracy. This old era CORONA mosaic image was compared with SPOT image of 2005, and the coastline changes were analyzed. We were able to ascertain considerable erosion and accumulation in some parts of study area. erosion area which is calculated from imagery is $0.32\;km^2$ from Kosung to Kangnung. Results of coastline change detection can provide useful information for related studies.

돌발홍수 모니터링 및 예측 모형을 이용한 예측(F2MAP)태풍 루사에 의한 양양남대천 유역의 돌발홍수 모니터링

  • Kim, Byung-Sik;Hong, Jun-Bum;Choi, Kyu-Hyun;Yoon, Seok-Young
    • Proceedings of the Korea Water Resources Association Conference
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    • 2006.05a
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    • pp.1145-1149
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    • 2006
  • The typhoon Rusa passed through the Korean peninsula from the west-southern part to the east-northern part in the summer season of 2002. The flash flood due to the Rusa was occurred over the Korean peninsula and especially the damage was concentrated in Kangnung, Yangyang, Kosung, and Jeongsun areas of Kangwon-Do. Since the latter half of the 1990s the flash flood has became one of the frequently occurred natural disasters in Korea. Flash floods are a significant threat to lives and properties. The government has prepared against the flood disaster with the structural and nonstructural measures such as dams, levees, and flood forecasting systems. However, since the flood forecasting system requires the rainfall observations as the input data of a rainfall-runoff model, it is not a realistic system for the flash flood which is occurred in the small basins with the short travel time of flood flow. Therefore, the flash flood forecasting system should be constructed for providing the realistic alternative plan for the flash flood. To do so, firstly, Flash Flood Monitoring and Prediction (FFMP) Model must be developed suitable to Korea terrain. In this paper, We develop the FFMP model which is based on GIS, Radar techniques and hydro-geomorphologic approaches. We call it the F2MAP model. F2MAP model has three main components (1) radar rainfall estimation module for the Quantitative Precipitation Forecasts (QPF), (2) GIS Module for the Digital terrain analysis, called TOPAZ(Topographic PArametiZation), (3) hydrological module for the estimation of threshold runoff and Flash Flood Guidance(FFG). For the performance test of the model developed in this paper, F2MAP model applied to the Kangwon-Do, Korea, where had a severe damage by the Typhoon Rusa in August, 2002. The result shown that F2MAP model is suitable for the monitoring and the prediction of flash flood.

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DSP Implementation and Open Sea Test of Underwater Image Transmission System Using QPSK Scheme (QPSK 방식을 이용한 수중영상 정보전송 시스템의 DSP구현 및 실해역 실험 연구)

  • 박종원;고학림;이덕환;최영철;김시문;김승근;임용곤
    • The Journal of the Acoustical Society of Korea
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    • v.23 no.2
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    • pp.117-124
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    • 2004
  • In this paper, we have been implemented the QPSK-based underwater transmission systems using DSP in order to transmit the underwater image data. We have adopted a BDPA (Block Data Parallel Architecture) to control multiple DSPs used in the transmitter and receiver in order to transmit the image data in real-time. We also have developed GUI software in order to drive and to debug the implemanted system in real-time. We have executed open sea tests in order to analyze the performance of the implemented system at East Sea near Kosung in Kangwon-Do. As a result of these experiments, it has been demonstrated that 10 kbps image data can be received without errors at 30m and 80m depth points, while the distance between the transmitter and the receiver is up to 20m.