• 대한수의학회지
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• 제18권1호
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• pp.39-50
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• 1978

Because of very little information available regarding the poisonous plants distributed in Jeju-Island, the author made a survey of such plants from March, 1974 to Dec., 1977. The results obtained were as follows: 1. If not all, 68 families, 137 genera and 190 species of poisonous plants distributed in Jeju-island were classified. And 190 species were divided into 137 spp. of herbs, 45 spp. of shrubs, 3 spp. of molds and 5 spp. of toadstools. 2. Relatively, a large number of poisonous plants were distributed in wild field. Jungle area, inhabited region, seashore and high mountainous area took next place gradually by the number of plants. 3. And according to their toxic chemical components or poisoning types, they were classified as 16 spp. of cyanogenetic plants, 14 spp. of oxalate-producing plants, 14 spp. of nitrate. producing plants, 10 spp. of photosensitization and 136 spp. of the other activities.

• 로봇학회논문지
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• 제18권3호
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• pp.233-240
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• 2023

In this paper, we proposed a hybrid type robot that simultaneously surveillance and reconnaissance on the ground and in the air. It was possible to expand the surveillance and reconnaissance range by expanding the surveillance and reconnaissance area of the ground robot and quickly moving to the hidden area through the drone. First, ground robots go to mission areas through drones and perform surveillance and reconnaissance missions for urban warfare or mountainous areas. Second, drones move ground robots quickly. It transmits surveillance and reconnaissance images of ground robots to the control system and performs reconnaissance missions at the same time. Finally, in order to secure the interoperability of these hybrid robots, basic performance and environmental performance were verified. The evaluation method was tested and verified based on the KS standards.

• 대한공간정보학회지
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• 제24권3호
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• pp.59-66
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• 2016

2011년 발생한 서울시 우면산의 토석류는 과거 산간지역 피해와는 달리 도심지역에서 큰 피해가 발생하였다. 따라서 산사태 및 토석류는 산악지역과 도심지역에 관계없이 다양한 지역에서 빠른 속도로 발생하여 엄청난 피해를 유발시키기 때문에 많은 연구자들은 토석류의 영향범위를 예측하고 피해를 최소화하기 위해 노력하고 있다. 토석류의 영향범위 예측을 위한 가장 핵심적인 부분은 복잡한 3차원 지형에서의 토석류 거동 및 퇴적 메커니즘을 이해하여야 한다. 그리고 퇴적 메커니즘을 이해하기 위해서는 토석류의 거동에 따른 에너지량과 침식량이 산정되어야 한다. 하지만 기존에 개발된 토석류 모델들은 토석류의 침식량을 산정하는데 한계가 있었다. 따라서 본 연구에서는 2011년 도심지의 대규모 토석류가 발생한 서울시 우면산 지역을 대상으로 항공사진, 항공 LiDAR 자료로부터 생성된 토석류 피해 전과 후의 DEM을 활용하여 토석류의 피해규모를 산정하였으며, 에너지 이론을 기반으로 하여 침식량을 산정할 수 있는 토석류 거동 해석 모델을 개발하여 비교하였다. 또한 동일지역에 대하여 기존의 토석류 모델(RWM, Debris 2D)도 함께 시뮬레이션 하여 종합적으로 토석류 지역을 비교 분석하였다.

• 한국환경과학회지
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• 제3권1호
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• pp.39-47
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• 1994

Dispersion characteristics of air pollutants in the mountainous coastal area are investigated in considering with the mesoscale local circulations using a two dimensional numerical model with two kinds of topograpy of 500m and 300m. In the model, land-sea breezes and mountain-valley wind are mainly considered under the condition of the absence of large scale prevailing flow in the circulation analysis, and the pollutants dispersion is traced by the Lagrangian methods. According to the results, the wind velocity is affected by topography and is stronger in the case of 500m height mountain than that of 300m, the Pollutants that source is near the coast transported over the mountain and dispersed to behind inland area. It is classified that the topography change control affects the wind velocity and the circulations. The pollutants that source is different transported and concentrated to behind inland and/or diffused to the sea area by the combination of the wind system with topographic changes. The results can be applied to the air pollution control with the arrangement design of industrial area and the planning of coastal developments.

• 환경영향평가
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• 제23권1호
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• pp.1-9
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• 2014

This study, focusing on the area expansion of limestone mines, identifies the problems of Environmental Impact Assessment(EIA) and what impact the current problems exert on another mines developing process. The legal relations analysis reveals that the Management of Mountainous Districts Act and other related laws effect on EIA process, especially the case of area expansion of limestone mines excluded from EIA. However, these problems can create mismatch with the policy goal of EIA system and have a negative impact on the environment in the future. A series of indepth interviews with managers in related agencies found that those agencies have been unaware of the seriousness of the problem. Without any strategy, negative result made by development activities would get more serious and sustainable development may not be possible at all. In order to solve these problems, government should modify the current interdependent legal provision and create the incentive structure to participate actively related agency in the EIA system.

• 한국지형학회지
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• 제24권1호
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• pp.63-76
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• 2017

This research was classified mountain areas with high ecological, environmental and resource value among the macro scaled terrain that can be checked at the space scale of less than 1:1,000,000 and analyzed the topographical characteristics. It has been confirmed that the mountains of the Korean peninsula belong to the groups IV, V, VI(classification by Kapos et al.(2000)) as a result of applying the quantitative standards for designation of mountain areas to the global mountain system. The area of mountains calculated using high resolution DEM is equivalent to 48% of the area of the Korean peninsula, and the result is quite different from the general idea of which 70% is the mountain area of the Korean peninsula. The mountain areas show the distribution of geomorphons, that is different from the plains and the hills and also, it shows the differences between the mountains of the groups IV~ VI classified according to the altitude. As a result of analyzing the relations among type pattern, slope, and relief, specific geomorphons are concentrated at $10^{\circ}$ and $20^{\circ}$ and it shows the possibility to classify the mountainous areas into two groups based on the result that the distribution of landform patterns are bimodal in the relation to the amount of relief.

• Korean Journal of Geomatics
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• 제2권1호
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• pp.37-46
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• 2002

Accurate classification of water area is an preliminary step to accurately analyze the flooded area and damages caused by flood. This step is especially useful for monitoring the region where annually repeating flood is a problem. The accurate estimation of flooded area can ultimately be utilized as a primary source of information for the policy decision. Although SAR (Synthetic Aperture Radar) imagery with its own energy source is sensitive to the water area, its shadow effect similar to the reflectance signature of the water area should be carefully checked before accurate classification. Especially when we want to identify small flood area with mountainous environment, the step for removing shadow effect turns out to be essential in order to accurately classify the water area from the SAR imagery. In this paper, the flood area was classified and monitored using multi-temporal RADARSAT SAR images of Ok-Chun and Bo-Eun located in Chung-Book Province taken in 12th (during the flood) and 19th (after the flood) of August, 1998. We applied several steps of geometric and radiometric calculations to the SAR imagery. First we reduced the speckle noise of two SAR images and then calculated the radar backscattering coefficient $(\sigma^0)$. After that we performed the ortho-rectification via satellite orbit modeling developed in this study using the ephemeris information of the satellite images and ground control points. We also corrected radiometric distortion caused by the terrain relief. Finally, the water area was identified from two images and the flood area is calculated accordingly. The identified flood area is analyzed by overlapping with the existing land use map.

• 지질공학
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• 제26권3호
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• pp.413-422
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• 2016

인구밀도와 기간산업 개발이 급속하게 증가함에 따라 도시지역에서 산사태로 인한 인명손실과 재산손상이 점진적으로 증가하게 되었다. 특히 부산은 한국 내 대도시들 중에서 산지비율이 높기 때문에 과도하게 산지지역을 개발할 수밖에 없다. 본 연구의 목적은 무한사면 모델을 이용하여 부산 황령산 산사태 재해 평가 가능성을 검토하는 것이다. 모든 자료는 ArcGIS 10.0을 사용하여 추출한 주제도와 연관되어 있다. 그 결과 산사태 안전율은 예상대로 지하수위 변화에 반비례한다는 것을 보여 준다. 대부분의 연구지역이 건조 상태에서는 안정된 상태이고, 지하수위가 상승할 때 공극수압이 증가하여 불안정한 지역이 증가하게 된다. 그러나 분석결과 선구조밀도가 높은 기존 산사태 발생지역 중에서 여러 곳이 다른 지역보다 더 안정한 것으로 나타났다. 이렇게 실제상황과 분석결과가 상이하므로 이 문제를 해결하기 위해 부가적인 분석이론이 필요할 것으로 생각된다. 그러므로 새로운 불포화대 침투이론 개발이 시간에 따른 지하수위의 분포를 평가하는데 도움이 될 것으로 생각한다.

• 한국물환경학회지
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• 제27권4호
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• pp.467-474
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• 2011

In an effort to investigate water pollution characteristics of Juam lake, water samples were collected from three sites (Sites A, B, and C) of Oenam stream which is a typical tributary of rural watershed in the lake and analyzed for N concentration and the corresponding isotope ratio (${\delta}^{15}N$) of ${NO_3}^-$. Concentrations of ${NO_3}^-$ were not dramatically different among the sites; $0.8{\pm}0.2mgNL^{-1}$ (range: $0.0{\sim}4.3mgNL^{-1}$) for Site A, $1.1{\pm}0.2mgNL^{-1}$ ($0.0{\sim}4.3mgNL^{-1}$) for Site B, and $1.1{\pm}0.1mgNL^{-1}$ ($0.1{\sim}2.6mgNL^{-1}$) for Site C. Meanwhile, ${\delta}^{15}N$ tended to decrease with river flow; it was highest for Site A ($45.5{\pm}5.3$‰) followed by Site B ($19.7{\pm}2.0$‰) and Site C ($8.7{\pm}1.5$‰). Such high ${\delta}^{15}N$ values of ${NO_3}^-$ in Site A suggested that ${NO_3}^-$ derived from livestock feedlot (specifically livestock excrete of which ${\delta}^{15}N$ is higher than 10‰) is the predominant pollution sources despite mountainous area occupied the most of land-use in the watershed. Using the two-sources isotope mixing model, it was estimated that the contribution of cropping activities (i.e. fertilization) became greater in down-stream area (Sites B and C) due to the higher agricultural land-use than the up-stream area (Site A). Particularly, during the active cropping season, the low contribution of organic pollution sources indicated that domestic sewage was not the predominant pollution source. Therefore, it was suggested that agricultural sources such as livestock farming and cropping rather than mountainous and residential are the dominant sources of water pollution in the study area. These results could be effectively utilized in elucidating water pollution sources in rural areas and selecting water management practices.

• 한국식생활문화학회지
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• 제18권4호
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• pp.379-395
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• 2003

Regional foods is influenced by weather, local and social environment etc. The purpose of this study was to understand that regional foods in the middle of Chosun Dynasty through Domundaejac. Some of representative dishes of the Hansung and Kyonggi-do Area is duck(rice cake) of seasonally celebrated days, hangua(korea confectionary) and rice wine. Typical foods in Chungchong-do Area is included persimmon, jujube, watermelon and wax gourd. Some of the well-known food in Kangwon-do Area is pear, bangpungchuk(gruel), sukebyung(rice cake), woongjijunggua(korea confectionary) and sanat-kimchi(picked mustard leaves and stem) that is seemed characteristics of mountainous section. Some of the famous dishes in Cholla-do Area is backsanja(korea confectionary), tea, chuksun kimchi(bamboo shoot pickle), citrus fruits and ear shell. Kyongsan-do Area ia famous persimmon, bamboo fruit, dasik(korea confectionary) and yakban(glutinous rice cake). Hwanghae-do Area is famed pear and choshi as assumed the eatly form of gochujang(thick soypaste mixed with red pepper). Representative dishes are deljjuk(blue berry), herring, sangat-kimchi(picked mustard leaves and sterm) in Hamgyong-do Area and daemandu(big dumpling) in Pyongan-do Area. The coast area is famous for using lots of sea food. Fresh seafood is consumed raw, and clams, fish and seaweed are liberally added to soups and other dishes. The East coast is catched salmon, flatfish, codfish, sandfish and mackerel The West coast is catched yellow corvenia, lobster, tiny shrimp and large-eyed herring. The South coast is catched sea mussel, codfish and laver.