• 한국진공학회지
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• 제16권2호
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• pp.145-152
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• 2007

자외선 광여기 전자현미경 (Ultraviolet - Photoelectron Emission Microscopy: UV-PEEM)을 이용하여 Si (001)과 (113) 표면에 Ge을 증착하면서 실시간으로 나노구조의 형성과 크기 및 형태 변화과정을 조사하였다. Ge은 PBEM에 부착된 e-beam 증착기를 이용하여 $450-550^{\circ}C$ 온도에서 in situ로 증착하면서 표면의 변화를 PEEM으로 관찰하였다. Ge을 ${\sim}0.4\;ML/min$의 증착율로 ${\sim}4\;ML$ 이상 두께로 증착했을 때, 두 Si 표면에서 Ge의 균일한 변형층(strained layer) 위에 island 구조가 형성되었다. 초기에 형성된 원형 모양의 island는 연속적인 Ge 증착에 따라, ripening 과정에 의해 크기가 점차 성장되었고 밀도는 감소하였으나, 형태는 원형 모양을 유지하였다. 시료 성장 후 공기 중 AFM 측정 결과, Si(001) 표면에는 dome 형태의 Ge island가 Si(113) 표면에는 윗면이 평판하고 다면의 옆면을 지닌 island 구조가 형성됨이 확인되었다. 반면에 ${\sim}0.15\;ML/min$의 낮은 증착율로 Ge을 증착했을 때, Si(113) 표면에서 원형의 Ge island가 길죽한(elongated) 형태의 나노선 구조로 변형됨이 관찰되었다. 또한, 계속적인 Ge 증착 두께를 증가시킴에 따라 표면에는 새로운 island가 형성되지 않고, 기존의 island들이 점차 길이 방향으로 크기가 증가하면서 [$33\bar{2}$] 방향으로 배열하였다. 이와 같은 Ge 나노구조의 형성과 형태 변화는 나노구조 형성과정에서 변형이완(strain relaxation)과 가원자(adatom)의 표면 동역학적 효과와 깊은 관련이 있는 것으로 분석된다.

• 환경생물
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• 제33권4호
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• pp.390-393
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• 2015

Some asteroid specimens were collected at a depth of 150 m near Moseulpo in Jeju Island, Korea using fishing nets on October 2014. The specimens were identified as Henricia pacifica Hayashi, 1940 belonging to the family Echinasteridae of order Spinulosida. In the Korean fauna, seven species of genus Henricia were reported of which two species, H. nipponica and H. ohshimai, were distributed in Jeju Island. The morphological characteristics of this species were re-described with illustrations.

• 한국토양동물학회지
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• 제3권2호
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• pp.106-110
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• 1998

제주도의 한라산에서 채집된 날개응애 55과 88속 112종의 목록을 작성하여 보고한다. 그 중에 76종은 제주도의 날개응애로 처음 보고되는 종이다.

• 한국시뮬레이션학회논문지
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• 제4권1호
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• pp.113-119
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• 1995

In 3D computer graphics, fractal techniques have been applied to terrain models. Even though fractal models have become popular for recreating a wide variety of the shapes found in nature, a specific 3D terrain model such as Uleung Island could not be formulated by statistical fractals easily owing to the random effects. However, by locating the midpoints on the edges and the surface of a specific terrain such as Uleung Island, a similar shape of the terrain model can be simulated. This paper shows the way of simulating 3D Uleung Island terrain model by the statistical fractals wherein the subdivision algorithm is used.

• Animal Systematics, Evolution and Diversity
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• 제26권3호
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• pp.349-351
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• 2010

Some asteroid specimens were collected from the subtidal zone near Gapado, Jejudo Island with fishing net on June 2010. Among them, Anseropoda petaloides (Goto, 1914) which belongs to the family Asterinidae of the order Valvatida turned out to be a new record from Korea. Morphological characters of this species collected at 130 m deep are redescribed with photographs. This species is characterized by its very thin body composed of plates imbricated into each other like scales. Twenty four asteroids are currently known from Jejudo Island, Korea.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1992년도 가을학술발표회 논문집
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• pp.107-112
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• 1992

Housing lots and area for industrial construction are very serious problem because of narrow country area and high population density of Korea. Especially the form of Pusan is long from north to south. Since the city is surrounded by the sea, traffic trouble and housing lots problem is very serious condition. To solve these problems, Reclamation & Man-made island is needed. So Pusan city is planning for Man-made Island for 2000 year. I will consider about the content of Man-made Island, which is planned by Pusan, and the character of Geotechnical Engineering.

• Animal Systematics, Evolution and Diversity
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• 제7권1호
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• pp.13-38
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• 1991

This study on the five families (Anamixidae, Colomastigidae, Eophliantidae, Eusiridae, and Hyalidae) of fammaridean amphipods of Ulreung Island was based on the materials collected at eight localities in Ulreung Island. Nine speices of seven genera were identified. Of these, three (Paranamixis denticulus, Colomastix prionotos, and Hyale bisaeta) were new to science. Three species (Ceinina japonica, Eusiroides monoculoides japonicus, and Allorchestes angusta) were new recordsfor Korean waters. These six species were descirbed with illustrations.

• Animal Systematics, Evolution and Diversity
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• 제23권2호
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• pp.251-253
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• 2007

Some sea stars were collected from the coast of Seogwipo, Jejudo Island by using the fishing net at April 2003, and were identified on the basis of their morphological characteristics. Among them, Paragonaster ctenopes Sladen, 1889 belonging to family Goniasteridae, order Phanerozonia is newly recorded from Korea. Twenty two species of asteroids are reported to be distributed in the Jejudo Island of Korea.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2010년 춘계학술발표회 논문집
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• pp.399-401
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• 2010

Heat island phenomenon is explained that rapid urbanization according to increase population, traffic amount etc. Meantime it has approximately analyzed through the climatic element, satellite image. GIS technology is developing in many fields high resolution satellite, virtual geographic information system (VGIS), lidar, a highly spatial analysis. In this technology progress to get a accuracy and improve efficiency of heat island analysis

• 한국패류학회지
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• 제6권1호
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• pp.45-55
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• 1990

The present study on the classification and description of the marine mesogastropods based on the materials which were collected during the period from 12th to 17th of July in 1989 at nine localities of the Ullug Island. Seven unrecored species in 6 families of mesogastropodes are new to the fauna of Ullung Island. As a result of this study, 7 families and 8 species of marind mesogastuopoes are riported from the Ullung Island. Two species of thim, Costalynia costulata(Dunker, 1860), Barleeia angustata(Pilsbry, 1901), are found to be new to the fauna of Korea.