• 한국정보통신학회논문지
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• 제14권7호
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• pp.1551-1556
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• 2010

본 논문에서는 굴곡에 의한 조도량의 차이와 명암도 차이를 퍼지 기법에 적용하여 개선된 반도체 불량 검출 방법을 제안한다. 제안된 방법은 먼저 회전각과 양선형 보관법을 이용하여 반도체 영상의 각도를 보정하는 전처리 과정을 수행한다. 그리고 굴곡에 대한 조도량의 차이와 패턴 매칭을 이용하여 얻어진 오류 영역의 명암도 차이를 퍼지 소속 함수에 적용하여 결과 값을 추론한다. 최종적으로 비퍼지화된 결과 값을 적용하여 반도체의 초기 불량을 검출한다. 제안한 방법에서 실제 사용되는 반도체 정면 영상과 측면 영상 30쌍을 대상으로 실험한 결과, 기존의 방법에서 판단된 실제 불량 제품을 모두 검출하였다. 기존의 방법은 1mm내의 미세한 굴곡을 가진 정상 제품을 불량으로 판별하였으나 제안된 방법에서는 오류로 검출하지 않고 정상으로 판별하였다. 따라서 기존의 방법에 비해서 반도체의 초기 불량 판단에 효과적으로 적용될 수 있다는 것을 확인하였다.

• Ocean and Polar Research
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• 제35권2호
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• pp.127-134
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• 2013

In this study we investigated changes in the Tsushima Warm Current (TWC) under the global warming scenario RCP 4.5 by analysing the results from the World Climate Research Program's (WCRP) Coupled Model Intercomparison Project Phase 5 (CMIP5). Among the four models that had been employed to analyse the Tsushima Warm Current during the 20th Century, in the CSIRO-Mk3.6.0 and HadGEM2-CC models the transports of the Tsushima Warm Current were 2.8 Sv and 2.1 Sv, respectively, and comparable to observed transport, which is between 2.4 and 2.77 Sv. In the other two models the transports were much greater or smaller than the observed estimates. Using the two models that properly reproduced the transport of the Tsushima Warm Current we investigated the response of the current under the global warming scenario. In both models the volume transports and the temperature were greater in the future climate scenario. Warm advection into the East Sea was intensified to raise the temperature and consequently the heat loss to the air.

• 한국동물학회지
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• 제11권2호
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• pp.37-47
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• 1968

著者들이 1956年부터 1967年까지의 其間에 南韓의 海岸一帶에서 採集한 海綿動物을 同定分類한 結果 다음과 같이 10科 14屬 17種을 얻었다. 17種中 Halichondria japonica Kadota 以外의 16種은 韓國未記錄種이다. Family Haliclonidae: 1. Haliclona permollis; Family Callyspongiidae: 2. Callyspongia elegans, 3. C. ramosa, 4. Ceraochalina differentiata; Family halichondriidae: 5. Halichondria japonica, 6. H. okadai, 7. H. oshoro, 8. H. panicea; Family Suberitidae: 9. Suberites ficus; Family Myxillidae: 10. Myxilla setoensis, 11. Lissodendoryx isodictyalis; Family Ophlitaspondiidae: 12. Ophlitaspongia noto, 13. Mycale plumosa; Family Ancorinidae: 14. Penares incrustans; Family Tethyidae: 15. Tethya japonica; Family Grantiidae: 16. Leucandra tuba; Family Heteropiidae: 17. Vosmaeropsis japonica.

• Ocean and Polar Research
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• 제32권3호
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• pp.331-336
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• 2010

The CREAMS (Circulation Research of the East Asian Marginal Sea) survey in 1999 revealed a sharp mid-depth discontinuity of the phosphate:silicate ratio in all basins of the East/Japan Sea. Incidentally, this discontinuity layer corresponds to the oxygen minimum layer. Directly below the discontinuity layer, oxygen concentration is increased. This increase in oxygen concentration is interpreted as a proof of intermediate water formation. Oxygen minimum indicates that the water parcel is old and stable against mixing. So it seems be an efficient barrier to vertical exchange of materials. This means that, once materials enter the lower domain, they rarely return to the upper domain. Therefore, the biogeochemistry of the East/Japan Sea depends heavily on material input through the Korea Strait, and flux is expected to be sensitive to the climate change. As a result, the East/Japan Sea ecosystem seems vulnerable to tipping (regime shift), which occurred on a decadal time scale.

• 식품과학과 산업
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• 제54권3호
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• pp.196-209
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• 2021

The origines of the Western roasting culture and East Asian boiling culture were studied and the importance of primitive pottery culture (8000-5000 BCE) in the Korea Strait coastal region was discussed. The primitive pottery culture probably initiated the Jjigae (stew) culture and the production of salt. It can be also postulated that fish fermentation, kimchi fermentation, and cereal alcohol fermentation originated during this period. Soybean culture emerged ca. 2,000 BCE in South Manchuria and the Korean Peninsula. This paper focuses on the role of Korean foodways in the food science and technology development for the sustainable and resilient food systems. We are facing a global food crisis caused by population growth, climate change, and high animal food consumption. Studies on the meat analog and cultured meat are the new trend in Food Science and Technology. The importance of the wisdom learned through the Northeast Asian traditional foods, for example, soybean curd (tofu) and meaty flavor production by fermentation for the research on the novel sustainable and resilient food systems are discussed.

• Ocean and Polar Research
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• 제43권1호
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• pp.15-30
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• 2021

In this study, using 16 ORA-IP (Ocean Reanalysis Intercomparison Project) data, we investigated spatial and temporal changes of net surface heat flux in the East Asian seas and presented a new ensemble net surface heat flux index. The ensemble net surface heat flux index is produced considering the data distribution and the standard deviation of each ORA-IP. From the correlation analysis with air temperature averaged over the Korean Peninsula, ensemble net heat flux around the Korea Strait shows the highest correlation (0.731) with a 3 month time lag. For the correlation study regarding precipitation over the Korean Peninsula, it also shows significant correlation especially in winter and spring seasons. Similar results are also found in comparison with climate indices (AO, PDO, and NINO3.4), but ensemble net surface heat flux data in winter season reveals the strongest correlation patterns especially with winter temperature and spring precipitation.

• 한국환경과학회지
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• 제23권9호
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• pp.1551-1562
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• 2014

To clarify the characteristics of TKE (Turbulence Kinetic Energy) variation for offshore wind power development, several numerical experiments using WRF were carried out in three different coastal area of the Korean Peninsula. Buoyancy, mechanical and shear production term of the TKE budget are fundamental elements in the production or dissipation of turbulence. Turbulent kinetic energy of the south coast region was higher than in other sea areas due to the higher sea surface temperature and strong wind speed. In south coast region, strong wind passing through the Korea Strait is caused by channelling effect of the terrain of the Geoje Island. Although wind speed is weak in east coast, because of large difference in wind speed between the upper and lower layer, the development of mechanical turbulence tend to be predominant. Since lower sea surface temperature and smaller wind shear were detected in west coastal region, the possibility of turbulence production not so great in comparison with other regions. The understanding of the characteristics of turbulence in three different coastal region can be reduced the uncertainty of offshore wind construction.

• 한국해양학회지
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• 제26권1호
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• pp.38-46
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• 1991

조밀하게 채취된 한욱 근해 대륙붕 상의 표층퇴적물의 입도 자료 1.044 개를 재해 석하였다. 이들 표층퇴적물의 입도곡선은 31%가 단일 모르를, 54%가 두 개의 모드를 보이며 나머지는 세 개 이상의 모르를 가진다. 단일모드 퇴적물과 북모드 퇴적물의 각 구성모드의 입도곡선은 대체로 정규분포와 세립질화 한다. 군산 앞바다 및 남해 외대 륙붕의 단일모드 모래지역의 지리적 분포는 중금속 및 부유퇴적물 농도의 최저값지역 과 거의 합치한다. 이상의 사실들에서 퇴적물의 세립질 모드의 입도분포가 현세의 운 반 퇴적과정을 잘 반영한다는 것을 알게되었다. 동시에 모드분석수법이 퇴적물의 입도 자료를 해석하는데 유용한 방법임을 알게되었다.

• 한국어류학회지
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• 제5권2호
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• pp.177-183
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• 1993

베링해 공해 및 알라스카만에서 표본된 명태의 동일 개체로부터 비늘과 이석을 사용하여 연령사정한 결과를 비교, 고찰하였다. 베링해 공해 명태 44~54cm 범위의 개체에 대한 연령사정 결과, 비늘연령은 4~9세, 이석연령은 4~18세로 나타났다. 동일개체의 두 연령형질간에 1~11세까지의 큰 차이를 보였으며, 특히 이식의 연령이 증가할수록 그 차이가 더욱 크게 나타났다. 알라스카만 명태 22~59cm 범위의 개체로부터 비늘 연령은 2~9세, 이석연령은 2~11세로 나타났다. 두 연령형질간의 연령사정 결과는 6세까지는 잘 일치하였고, 7세 이상에서는 이석에 의한 연령이 1~7세까지 높게 나타났다.

• 한국수산과학회지
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• 제36권3호
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• pp.306-316
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• 2003

We conducted a time-series analysis of temperature and salinity of sea water around Jeju Island, Korea. Monthly mean temperature and salinity was influenced by precipitation and weather conditions on Jeju as well as by oceanographic conditions of the open sea such as the Tsushima Warm Current and sea water in coastal areas. Salinity of Jeju coastal waters was the highest in April, and it was always over 34.00 psu with tiny fluctuation between December and June. Due to the effects of the Tsushima Warm Current, Jeju coastal waters maintained high salinity and stability. Low salinity and its large fluctuations during summer were closely associated with the China Coastal Water and precipitation in Jeju. The place of the lowest water temperature was the northeast coasts of Jeju (Gimneong, Hado, Jongdalri). In winter, as warmer water of the Tsushima Warm Current appeared in western area of Jeju dwindled flowing along the northern coasts of Jeju area and becoming cool, the lowest water temperature often appeared locally in Gimnyeong and its vicinitly in summer. The Tsushima Warm Current flows into the east entrance of Jeju Strait, but its influence is weak because of geometry and strong vertical mixing due to fast tidal currents.