• 한국산림과학회지
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• 제87권4호
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• pp.528-534
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• 1998

산불 확산의 인자 중에 바람과 경사면은 가장 중요한 인자들로 고려된다. 일반적으로 복잡한 산악지형에서는 동일한 경사면이라도 서로 다른 분포의 바람을 갖는다. 본 논문에서는 지형데이타를 이용한 산림내 각 지역에서의 풍향 풍속의 유동장을 계산하여 산불확산을 예측하였으며 그 결과 값을 사용하여 ROS(Rate Of Spread)실험식이 적용된 산불 확산 알고리즘을 개발하였다. 이를 실제 산불확산에 적용하여 90%이상의 일치성을 확인하였다.

• 한국환경과학회지
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• 제1권1호
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• pp.19-33
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• 1992

The high oxidants, which occur the daily maximum concentrations in the afternoon, are transported into the other region via long range transport mechanisms or trapped within the shallow mixing boundary layer and then removed physically (deposition, transport by mountain wind, etc.) and chemically (reaction with local sources). Therefore, modeling formation of photochemical oxidants requires a complex description of both chemical and meteorolog ital processecs . In this study, as a part of air quality studies, we reviewed various aspects of photochemical modeling on the basis of currently available literature. The result of the review shows that the model is based on a set of coupled continuity equations describing advection, diffusion, transport, deposition, chemistry, emission. Also photochemical oxidant models require a large amount of input data concerned with all aspects of the ozone life cycle. First, emission inventories of hydrocarbon and nitrogen oxides, with appropriate spatial and temporal resolution. Second, chemical and photochemical data allowing the quantitative description of the formation of ozone and other photochemically-generated secondary pollutants. Third, dry deposition mechanisms particularly for ozone, PAN and hydrogen peroxide to account for their removal by absorption on the ground, crops, natural vegetation, man-made and water surfaces. Finally, meteorological data describing the transport of primary pollutants away from their sources and of secondary pollutants towards the sensitive receptors where environmental damage may occur. In order to improve our present study, shortcomings and limitation of existing models are pointed out and verification Process through observation is emphasized.

• 한국지역지리학회지
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• 제3권2호
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• pp.37-87
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• 1997

만경강유역을 하나의 연장선상에 놓고 연구한 결과, 그 공간상에서 역사와 더불어 형성발달해온 시공연속체를 확인할 수 있었다. 만경강상류에서 하류 하구연안에 이르는 면장공간상에서의 개간과정은 여말에서 부터 시작되어 오늘에 이른 것으로 볼 수 있다. [기원지-지향지] 지향가설에서 본 개간과정에서 개간의 기원지는 만경강상류 산간계곡의 지류곡지 개간을 효시로 하여 기원지가 이루어지고, 조선조 중기까지는 수방대책의 발달과 더불어 하천 중류까지 진출하고, 하천 본류에 대한 하류지역의 계간은 하천의 규모와 유수량의 증가로 인한 하안의 홍수와 범람을 극복할 수 있는 인공제방을 축조할 수 있는 기술수준에 이른 1920년대에 들어서야 본격화되고, 그후 연이어 하구연안의 간석지 개간도 시행되어 개간의 개척첨단이 이들 지향지인 해안간석지일대에 형성되는 것을 볼 수 있다. 시간의 흐름과 더불어 각 시기마다 공간의 변화도 수반되어 시공연속체가 발달하는 것을 볼 수 있다. 취락의 경우 개간과정에 따라 산간계곡 산록일대에서는 주변입지적 집촌, 하천중류와 하류에서는 중앙입지적 집촌, 하천하구 간석지에서는 중앙입지적 열촌형태가 우세하게 나타났다.

• 산업기술연구
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• 제17권
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• pp.323-330
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• 1997

In this paper, a new approach to modeling of nonlinear systems using fuzzy theory is presented. To express the various and complex behavior of nonlinear system, we combine multiple model method with hierachical prioritized structure, and the mountain clustering technique is used in partitioning of system. TSK rule structure is adopted to form the fuzzy rules, and Back propagation algorithm is used for learning parameters in consequent parts of the rules. Also we soften the paradigm of Mamdani's inference mechanism by using Yager's S-OWA operators. Computer simulations are performed to verify the effectiveness of the proposed method.

• 한국대기환경학회지
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• 제19권1호
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• pp.13-23
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• 2003

A local wind model and a three dimensional local environmental model including advection, diffusion, deposition. and photochemical reactions were performed at Gwangyang Bay, Korea, to predict air flow and air pollutants concentrations. A large grid was used, and nesting method was employed for small grid calculation. From the meterological module simulation, we were able to reproduce local wind characteristics such as sea/land winds and mountain/valley winds simulation at Gwangyang Bay. In addition, the concentration module showed high concentration regions at Yosu industrial complex, Gwangyang steel company. and Container anchor. It was also seen that air pollutants were dispersed by sea/land winds. A comparison between the measurement and the prediction of sulfur dioxide and nitric oxide, which are relatively low-reacted pollutants, was performed. However, the measured nitrogen dioxide and ozone concentrations were higher than the simulated ones. Particularly, ozone concentration between 8 a..m. and 8 p.m. agreed well, but the measured ozone during the rest of time were generally higher.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 B
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• pp.425-427
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• 1997

In this paper, a new approach to modeling and control of nonlinear systems using fuzzy theory is presented. To express the various and complex behavior of nonlinear system, we combine multiple model method with hierachical prioritized structure. The mountain clustering technique is used in partitioning of system, and TSK rule structure is adopted to form the fuzzy rules. Also we soften the paradigm of Mamdani's inference mechanism by using Yager's S-OWA operators.

• Wind and Structures
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• 제24권6호
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• pp.529-564
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• 2017

The Santa Ana winds occur in Southern California during the September-May time frame, bringing low humidities across the area and strong winds at favored locations, which include some mountain gaps and on particular slopes. The exceptionally strong event of late October 2007, which sparked and/or spread numerous fires across the region, is compared to more recent events using a numerical model verified against a very dense, limited-area network (mesonet) that has been recently deployed in San Diego County. The focus is placed on the spatial and temporal structure of the winds within the lowest two kilometers above the ground within the mesonet, along with an attempt to gauge winds and gusts occurring during and after the onset of October 2007's Witch fire, which became one of the largest wildfires in California history.

• Journal of Ginseng Research
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• 제28권1호
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• pp.60-66
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• 2004

“The Regional complex long-term program of restoration (reintroduction) of Primoryes ginseng population up to 2005” elaborated by Primorye governor administration, Regional Committee of Natural Resources and Russian Academy of Sciences operates in Russian Primorye. The Institute of Biology and Soil Science (IBSS) provides the scientific implementation of the program including the genetic analysis of extant ginseng populations, plant reproduction and off-spring identification. According to our investigations, the genetic resource of P. ginseng in Primorye is represented by three populations of wild-growing ginseng and a few pritate plantations. The results obtained by RAPD allowed concluding that the resource is dispersed among the wild and cultivated ginseng sub-populations in such a way that each of sub-populations studied has to be represented as a stock material to maintain species genetic variability. The allozyme analyses also showed that the small sub-populations of wild ginseng are characterized by unique genetic diversity and, therefore, they all need to be represented in reintroduction centers. Additionally the allozyme analysis discovered that the Blue Mountain and Khasan populations possess the most genetic diversity. So, at least one more reproductive ginseng unit has to be created besides two already existing reintroduction centers representing the Sikhote-Alin and the Blue Mountain populations.

• 고려인삼학회:학술대회논문집
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• 고려인삼학회 2002년도 학술대회지
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• pp.509-521
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• 2002

'The Regional complex long-term program of restoration (reintroduction) of Primoryes ginseng population up to 2005' elaborated by Primorye governor administration, Regional Committee of Natural Resources and Russian Academy of Sciences operates in Russian Primorye. The Institute of Biology and Soil Science (IBSS) provides the scientific implementation of this program including the genetic analysis of extant ginseng populations, plant reproduction and offspring identification. According to our investigations, the genetic resource of P. ginseng in Primorye is represented by three populations of wild-growing ginseng and a few private plantations. The results obtained by RAPD allowed concluding that this resource is dispersed among the wild and cultivated ginseng sub-populations in such a way that each of sub-populations studied has to be represented in living plant collection as a stock material to maintain species genetic variability. The allozyme analyses also showed that the small sub-populations of natural ginseng are characterized by unique genetic diversity and, therefore, they all need to be represented in reintroduction centers. Additionally the allozyme analysis discovered that the Blue Mountain and Khasan populations possess the most genetic diversity. So, at least one more reproductive ginseng unit has to be created besides two already existing reintroduction centers representing the Sikhote-Alin and the Blue Mountain populations.

• KIEAE Journal
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• 제8권4호
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• pp.11-18
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• 2008

This research case-study places are chosen Seoul Metropolitan City and Yong-In City where the distinction characteristics of outdoor spaces are introduced in Apartment Complex. In this study, the standard of waterscape facilities will be set through preliminary researches and detail design factors are prepared for each characteristics. Analyze and research the characteristics of design factors through the field research of places. The Group data from Cluster Analysis, which is about waterscape facilities, is analyzed and classified by types of waterscape facilities in common residence. and then each type of characteristics and representatives of waterscape facilities founded. Waterscape facilities are charactered in 4 main types. I Type is appeared to the natural artificially mountain stream, slope and a rest space type, and feelings type. This type has twenty sites. II Type is appeared to the fewest sites(11 sites). This type is appeared to the Eco-pond, Border planting next to the waterscape facilities. III Type is appeared to the largest sites(28 sites), that is, play style water facilities of no-plantation patterns. IV Type is appeared to the retaining wall type, the rest space of bench type. Research result led, detailed plan element 64 are selected with design elements Seoul Metropolitan City and the Yong-In City at the time of the fact that well is only reflected commonly from external spaces, the type by quality which leads a statistical analysis the type quality was well reflected relatively was judged.