• 한국멀티미디어학회논문지
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• 제23권4호
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• pp.558-565
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• 2020

In this study, presents geographic analysis of Heuksando Island We classified each area of the island according to physical attributes. Then, we derived the meaning of each area as a physical space and virtual space. In order to symbolize the events that happens around the spaces, we set directions and relations for those spaces. In this process, we figured the stages of voluntary experience that originates from the user's actions. This study proposes hierarchical categories of virtual environments from spacial reality, experience and the creation of simulacrum.

• 한국농림기상학회지
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• 제1권1호
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• pp.36-40
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• 1999

A new method was developed to measure underground water level with high reliability. The principle of new method was to detect a change of a buoyant force according to change in water level of underground water measured by the use of a straingage load cell. Field test of the instrument was carried out in Cheju Island. The results were as follows; 1) The present study provided a possibility to develop a new underground water level meter. 2) This new instrument accomplished high reliability at field test in Cheju Island. 3) There is possibility of development of water level meter which measure various range of water level to detect a weight change of a buoyant forcd.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 1999년도 임시총회 및 추계 학술발표회
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• pp.79.1-79
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• 1999

• 한국지리정보학회지
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• 제15권4호
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• pp.65-77
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• 2012

본 연구에서는 부산의 지난 25년간 장기적 토지피복변화를 조사하고, 이어서 지표면 온도와 기온자료를 이용해서 열섬포텐셜을 평가하였다. 그 결과는 다음과 같다. 1975년부터 2000년까지 지난 25년 동안 부산의 도시면적은 2.5배 이상 증가하였다. 이처럼 단기간에 도시의 포장면적이 빠르게 증가한 것은 다른 나라에서는 유례를 찾아보기 어려운 우리나라 독특한 현상으로 판단된다. 이러한 과정을 통해서 도시열섬현상이 심화되었을 것이라는 것을 추정할 수 있었다. 지표면 피복에 따른 지표면 온도를 분석한 결과 도시화 지역과 산림지역의 온도가 현저히 차이가 나타났다. 특히 여름철에는 공단지역에서 $36{\sim}39^{\circ}C$로 높게 나타났으며, 반면 도시의 중심에 산지가 위치한 지역에서는 $22{\sim}24^{\circ}C$로 낮은 지표면 온도를 나타내었다. 토지피복도에 따른 열섬포텐셜은 지표면 피복 상태에 따라서 그 값이 달라짐을 알 수 있었다. 도시화지역 중 공업지역의 열섬포텐셜은 $6{\sim}8^{\circ}C$, 주거지역과 상업지역은 $0{\sim}5^{\circ}C$로 도시열섬을 유발할 가능성이 높음을 확인할 수 있었다. 반면 산림지역이나 농업지역 수변지역 열섬포텐셜 값은 $-6{\sim}-3^{\circ}C$로 나타났다. 본 연구결과를 통해 도시의 토지이용에 따른 기온상승효과를 평가하여 도시의 열환경 개선 및 환경친화적 도시개발 계획에 기초자료로 활용될 수 있을 것이다.

• 대한지하수환경학회지
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• 제4권1호
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• pp.5-13
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• 1997

제주도는 예상되는 물 부족분을 충당하기 위하여 대규모 지하수 개발을 계획하고 있다. 효율적인 지하수 자원의 관리를 위해서는 개발에 대한 영향평가가 선행되어야 하는데 제주도에서는 지역의 특성상 해수의 영향을 고려해야 한다. 본 연구에서는 가상의 지하수 개발에 대한 중-동제주 수역의 해수쐐기의반응을 해석하였다. 해석 방법으로는 담수와 해수의 동수역학을 동시에 고려하는 비확산 전산모형(sharp interface numerical model)을 이용하였다. 모델링에서 사용된 단계적 지하수 개발 일정은 제주도 광역상수도개발 계획과 동일한 비율과 시간 간격에 따라 설정되었다. 모델링 결과 해수쐐기(saltwater wedge)는 지역에 따라 1km이상 침투하는 것으로 예측되었다. 이러한 결과는 해수쐐기를 고정된 것으로 가정하여 담수의 흐름만을 고려한 모델링을 바탕으로 한 영향평가의 신뢰성에 의문을 가지게 한다.

• 한국수산과학회지
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• 제46권5호
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• pp.594-597
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• 2013

Two leptocephali [total length (TL) 68.2-80.5 mm] from the family Ophichthidae, collected from the waters south of Jeju Island, Korea, were identified using morphology. The two ophichthid leptocephali were identified as belonging to the genus Ophichthus based on morphological characters: 131-132 myomeres; nine gut swellings; dorsal fin origin above the middle of the body; five postanal pigments present from the anus to the caudal margin. Ultimately, both leptocephali were identified as Ophichthus asakusae, as the total number of myomeres was consistent with those of adult O. asakusae. Here, we first describe the morphological characteristics of the O. asakusae leptocephalus, and suggest diagnostic characters for leptocephali belonging to the genus Ophichthus.

• 한국균학회지
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• 제13권1호
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• pp.49-51
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• 1985

울릉도에서 채집(採集)한 위축(萎縮), 총생(叢生), 황화(黃化) 증상의 천궁, 전북 장수에서 채집한 위축(萎縮), 황화(黃化) 증상의 시호, 대관령에서 채집한 황화(黃化), 총생(叢生) 증상의 이병주(罹病株)로 부터 전자현미경 관찰 결과 마이코프라스마 병원체(病原體)가 발견(發見) 되었으며 천궁은 울릉도에서 발병률(發病率) 11.9%로써 피해가 심하였다.

• Journal of Astronomy and Space Sciences
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• 제29권2호
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• pp.199-208
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• 2012

The world's first geostationary ocean color imager (GOCI) is a three-mirror anastigmat optical system 140 mm in diameter. Designed for 500 m ground sampling distance, this paper deals with on-orbit modulation transfer function (MTF)measurement and analysis for GOCI. First, the knife-edge and point source methods were applied to the 8th band (865 nm) image measured April 5th, 2011. The target details used are the coastlines of the Korean peninsula and of Japan, and an island 400 meters in diameter. The resulting MTFs are 0.35 and 0.34 for the Korean East Coastline and Japanese West Coastline edge targets, respectively, and 0.38 for the island target. The daily and seasonal MTF variations at the Nyquist frequency were also checked, and the result is $0.32{\pm}0.04$ on average. From these results, we confirm that the GOCI on-orbit MTF performance satisfies the design requirements of 0.32 for 865 nm wavelength.

• 수산해양교육연구
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• 제21권4호
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• pp.568-575
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• 2009

On the conflict factors in using community fishing ground and their solutions, some conclusions are derived with the survey for fishing villages, residents, tourists as follows: Jeju Island has beautiful sceneries with seas in all the directions and so remarkable potential as personal experience fishing village. For sustainable development of ecological tourism in each fishing village, systematic, long-term development plans and management systems through decision making with residents in fishing and non-fishing villages are demanded. For tourist development of fishing village, protection management systems for marine and swampy land are needed first of all. Next, economical profit and the participation of resident have first priority, and also individual standards for each village are urgently prepared based on the results of basic research on each village. Finally, educations on environment and fishing village with professional tourist guide are needed. Ecological protection, environmental education, resident participation, local government's concern, and financial support could solve residential conflicts and make Jeju Island a Mecca of local fishing village tourism.

• 한국주거학회논문집
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• 제24권3호
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• pp.45-53
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• 2013

It is important to secure green spaces to solve the urban heat island phenomenon, which is among problems resulted by high-density developments in metropolitan areas. However, it is hard to secure such green spaces in established urban areas so Green Rooftop development approaches have recently been highlighted and introduced as a solution to the situation. The present study conducts a simulation on residential areas in urbanized regions to quantitatively evaluate the effects of green rooftop developments through a comparison of changes in the air temperatures before and after relevant development projects. According to the evaluation results, when the green roof top development is conducted in the available areas, the temperature is reduced by 0.14 degree. The extension of green project to the entire building showed the reduction of the temperature by 0.29 degree. Based on these results, it can be concluded that the green rooftop development is a practically solution for reducing the air temperature of urbanized areas.