• Journal of Satellite, Information and Communications
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• v.11 no.3
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• pp.100-103
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• 2016

This Study is focused on hedonic model study for retargeting advertising Based air inteface using useful information. many research related to the existing Internet of things, relatively not many study for effective advertising model based air inteface. So, this study is designed more information, fun, interactive advertising model based air inteface. therefore, result of this study show that implication to produce advertising based air inteface provides a practical guide.

• Journal of the Korean Institute of Intelligent Systems
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• v.14 no.6
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• pp.674-677
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• 2004

This paper deals with a systematic approach for the construction of the fixed-delay tree search (FDTS) detector in the intersymbol interference channel. The approach is based on the efficient multi-dimensional space partitioning. The Voronoi diagram (VoD) and the Delaunay tessellation (DT) of the multi-dimensional space are applied to implement the algorithm. In the proposed approach, utilizing the geometric information contained in the VOD/DT, the relative location of the observation sequence is determined which has been shown to reduce the implementation complexity. Detailed construction procedures are discussed followed by an example from the intersymbol interference communication channel.

• Korean Institute of Interior Design Journal
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• v.22 no.5
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• pp.241-249
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• 2013

The remarkable growth of city population and rate of urbanization are increasing every year rapidly in Korea. On the other hand young people are decreasing and old people are increasing in rural areas. So in 2009, the five Rural New-Town Development Areas were selected by the Ministry for Food, Agriculture Forestry and Fisheries. To provide data necessary for housing types and floor planning and development suitable for rural new-town development to be implemented constantly in rural areas all over the country later, this study used a space syntax program to analyze housing types and space structures within houses in five new-town development areas. After analyzing 33 floor plans for the five areas, there were few houses with separation of communal (integration space) and personal living spaces (segregation space). In particular, 82% had personal living spaces requiring protection of privacy, such as bedrooms and the toilet, classified into communal living spaces. Residential houses for rural new-town development targeting the young population valuing personal life and privacy, which failed to reflect city people's life properly, were expected to decrease residential satisfaction after occupancy.

• Fire Science and Engineering
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• v.16 no.4
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• pp.49-58
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• 2002

A large number of accidents at an underground place have been happening, including the gas explosion under construction of subway; the fires of underground utility and underground shopping malls, and other explosion, at home and abroad recently. These accidents make the function of a city ineffective due to the paralyses of electricity and communications net as well as the loss of property and cause people to feel unsecured with accompaniment of a heavy of toll of lives. This research will show evaluation methods of a numerical value of expected average loss space of combustion with the use of probability in order to present potential risk of combustion growth that underground space might cause, and how designer decides a system that enables us to compare and evaluate relatively the effectiveness of measures for preventing burning by calculating the expansion route and the damage size of burning in case of fire.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.196-198
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• 2005

오늘날 우리가 사용할 수 있는 정보의 양은 실로 막대하면서도 지속적으로 늘어가고 있는 추세이며, 동시에 데이터들의 신속한 처리에 대한 관심이 늘고 있다. 특히 GIS에서 사용되는 대용량 데이터나 빠른 처리 속도가 요구되는 인증 시스템 데이터와 같은 다양한 종류의 데이터 특성을 고려하여 효율적인 관리를 하는 데이터베이스 관리 시스템을 필요로 하고 있다. 스냅샷 데이터를 갖는 다중 레벨 공간 DBMS는 대용량, 또는 빠른 트랜잭션 처리 속도가 필요한 데이터들을 효율적으로 관리하는 데이터베이스 관리 시스템으로서, 대용량 데이터는 디스크 데이터베이스에서 그리고 빠른 트랜잭션 처리를 요구하는 데이터들은 스냅샷의 형태로 메모리 데이터베이스에서 관리한다. 메모리 데이터베이스에 저장되는 스냅샷은 상대적으로 더욱 중요한 스냅샷들이 집중적으로 생성되거나 스냅샷이 가진 특성이 변화될 경우, 메모리 데이터베이스 내에서의 저장 가치를 잃을 수가 있다. 따라서 메모리 데이터베이스에 불필요한 스냅샷들이 축적되는 문제를 해결하고 메모리의 이용성과 성능을 보존하기 위해서 효율적으로 스냅샷들을 교체하는 기법이 필요하다. 본 논문에서는 다중 레벨 공간 DBMS에서 질의 패턴을 이용한 효율적인 스냅샷 교체 기법을 제안한다. 제안된 기법은 메모리 데이터베이스 내에서 스냅샷에 대한 교체요청이 있을 경우, 메모리 데이터베이스 및 메모리 관리 시스템의 상창을 분석하여 주어진 상황에 대응하는 스냅샷 교체 기법을 수행한다.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.112-112
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• 2017

하천은 크게 하도와 홍수터 그리고 제방으로 나눌 수 있으며, 최근 대하천 및 중 소규모 하천의 홍수터 공간을 활용하여 인공습지, 체육시설 및 공원 등과 같은 다양한 친수시설들을 조성하여 활용하고 있다. 이러한 홍수터는 여름철 태풍이나 집중호우로 인해 침수되다가, 강우 사상이 종료된 이후에는 유사가 퇴적되어 복구비용이 반복적으로 발생하고 있다. 홍수시 홍수터에서의 수리적 안정성을 평가하기 위해서는 홍수터를 포함한 복단면에서의 흐름해석이 선행되어야 하며, 계산된 수리적 인자들을 이용하여 홍수터에서의 수리적 안정성을 평가할 수 있다. 국외에서는 국내와 다르게 하천 홍수터 공간을 거의 활용하지 않기 때문에 홍수터에서의 수리적 안정성 평가에 대한 연구사례는 드문 실정이며, 도시침수로 인한 제내지 홍수위험도 평가에 대한 연구가 주를 이루고 있다. 하지만 기존에 사용되고 있는 제내지 홍수위험도 지수를 국내 홍수터에 도입하여 수리적 안정성을 평가하기에는 침식 및 퇴적을 올바르게 고려할 수 없는 한계점이 있기 때문에 본 연구에서는 홍수시 홍수터 내에서 침식과 퇴적을 고려할 수 있는 홍수터 수리적 안정성 지수를 산정하고 과거 연구된 실내 수리실험 자료와 비교하여 적용성을 분석하고자 한다. 또한 자연하천에서의 실제 태풍 사상에 의한 침식 및 퇴적의 상대적 공간분포를 산정하여 홍수터에서의 수리적 안정성을 평가하고자 하였다.

• The Korean Journal of Ecology
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• v.23 no.3
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• pp.241-253
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• 2000

The degree to which microenvironmental factors are linked to spatial patterns of vegetational factors within ecosystems has important consequences for our understanding of how ecosytems are structured and for conservation of rare species in ecosystems. We studied this relationships between the spatial patterns of microenvironmental factors and vegetational factors in temperate hardwood forest in Mt. Jumbong Biological Reserve Area, Korea. To do this, environmental and vegetational factors from 196 micropoints in a 0.49 ha plot were investigated. Most of all environmental factors and vegetational factors showed the variations among micropoints. Microtopographic factors, litter depth, soil moisture content and relative light intensity at this site were spatially dependent at a scale of 14∼62 m. Coverage of tree and shrub layer and species diversity of herb layer in autumn were spatially dependent at a scale of < 15 m. Species richness and species diversity of herb layer in spring and species richness of herb layer in autumn were spatially dependent at a scale of 28∼48 m. Multiple regression analysis showed that spatial patterns of species richness and species diversity of herb layer in spring and autumn were affected by litter depth, slope, subtree layer, shrub, Sasa borealis etc. The best predictor for the spatial patterns of species richness and species diversity of herb layer at this site was the spatial pattern of litter depth. Species richness and species diversity of herb layer showed strongly negative correlation with litter depth. We estimate that the spatial pattern of litter depth at this site were affected by direction of wind, microtopography and spatial pattern of shrub layer.

• Journal of the Korean Institute of Landscape Architecture
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• v.39 no.4
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• pp.28-38
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• 2011

This study analyzes the visual access opportunities of neighborhood park users using the Space Syntax theory. In order to achieve this goal, 27 neighborhood parks were selected and 27 axial maps drawn according to the spatial configuration of the sites. Based on the axial map data, this study has calculated some specific space syntax indices, including Connectivity, Integration, and Intelligibility using the Axwoman ver 3.0 based on the Arcview 3.2 application. The value of the representative indices were used to examine visual access opportunities presented by the parks. This study was conducted in two aspects: one focusing on the entire space and another focusing on only the main entrance of the parks. The former used integration and intelligibility values and the latter used connectivity and integration values to evaluate the visual access opportunities of the sites. As a result, this study found that some parks, including Joongang, Balsan, and Sangdang, have high visual access opportunities in terms of the spatial configuration surrounding the park, which shows an integration value higher than 2, and also having intelligibility values higher than 0.7. This is the result of the grid land use pattern surrounding the parks and the straight roads that are closely linked to the main entrances of the parks. It is expected that this methodology and results will be used for locating neighborhood parks during the urban planning stage as providing reasonable evidence.

• Science of Emotion and Sensibility
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• v.21 no.1
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• pp.115-128
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• 2018

Understanding the process of spatial perception plays a significant role in the design process as well as in the use of actual spaces. The perception of spatial depth can vary according to the space composition and design even there is no change in the actual size of the space. The properties of 3-dimensional space are its width, height, and depth; however, compared to the perception of spatial width and height, little research and theories exist on spatial depth perception. The reasons may be there less interest lies in the effect of spatial depth perception than that of spaciousness or height of space. This study is an investigation of the process of spatial depth perception using an eye-tracking device with stimuli developed through Computer Graphics. A total of 44 interior design major students participated in the eye tracking experiment; and they looked at three images comprised of an identical room with only changes in the rear wall condition. The results show that a significant difference in the fixation duration per stimulus exists. In addition, a significant difference exists on the fixation duration per stimulus according to the participants' answer of the deepest space. The result of this study can help identify factors for spatial depth perception, validate the assumption on it, and provide knowledge on how to acquire desirable spatial depth by utilizing the research result.

• Journal of Korean Society for Geospatial Information Science
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• v.22 no.4
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• pp.13-19
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• 2014

To develop a wind farm in a mountainous terrain like Korea, it is generally more advantageous to install wind turbines along a mountain ridge where has relatively better wind resource because that is open in all directions and free from shielding by the surrounding topography. In this study, the SRTM (Shuttle Radar Topography Mission) v4.1 3 arc-second resolution digital elevation database and the geomorphometric characterization software LandSerf v2.3 are used to extract ridge lines for assessing a wind farm siting in mountainous terrain. The effectiveness of wind farm siting along a ridge line is confirmed that the most of wind turbines in the Gangwon, Taegisan, and Maebongsan wind farms in Korea's mountainous terrain are placed along the primary and secondary ridge lines where wind resource is relatively outstanding.