• The Korean Journal of Applied Statistics
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• v.27 no.6
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• pp.933-945
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• 2014

Bayesian spatiotemporal analysis is of considerable interest to epidemiological applications because health data is collected over space-time with complicated dependency structures. A basic concept in spatiotemporal modeling is introduced in this paper to analyze space-time disease data. The paper reviews a range of Bayesian spatiotemporal models and analyzes Hepatitis A data in Korea.

• Journal of the Korea Convergence Society
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• v.8 no.6
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• pp.227-235
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• 2017

The essence of architecture is space acquired as a result of architect's design act, but the object of the design is not the space and it is the physical elements to construct it. The masters of modern architecture have described the types of spaces that can be composed of these elements, but there is a difficulty in constructing the space because they does not mention how to construct it. From this point of view, if architecture is the techniques for human behavior and the art of building space, it is recognized that there is a need for concrete research on how to construct a space with ambiguous substance. Therefore, I conducted research on the extensibility of diagonal spaces through '4 Logements Studio' by Henri Ciriani, a representative architect of Neo Corbusian. The 'network for identity' method proposed by Ciriani was examined as a methode to realize spatial expansion and the furniture should be designed as an element of reading space and 3 optimal alternatives for 4 housing arrangements were obtained based on the Equivalence, Lighting, View, and Community life.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.8
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• pp.735-744
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• 2016

This study attempted quantitative analysis by space syntax on the plan of a non-hierarchical arrangement, which selected SANAA's work after Almere Stadt Theater, and analyzed the difference in the quantitative value of the non-hierarchical arrangement in plan that appears externally. The analysis results were as follows. First, SANAA's spaces with a non-hierarchical arrangement plan that appears externally showed a definite quantitative value difference, and had a hierarchical space difference in the plan that does not appear externally. Second, the spaces with a high integration value also had a high connectivity value, which is indicated by increasing the number of space openings using the method of giving hierarchy to the non-hierarchical arrangement plan or adjusting the size of the room or location to grant hidden hierarchy. Third, SANAA used exterior corridor rather than interior corridor in grid-type plan to solve the accessibility problem, and the open coat spaces between rooms provide natural lighting and ventilation and are used as equipment that controls the hidden hierarchy of space at the same time.

• Journal of the Korean Geographical Society
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• v.39 no.3
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• pp.321-343
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• 2004

In principal, the original form of Eupchi landscape in Naepo reflects a traditional idea regarding direction as a connection with one's fortune and naturalization strategy of power. In reality, the weight for the landscape inside the castle town was distinct by locality according to the conditions of natural geographies and main function of the castle town. In other words, the traditional Eupchi landscape was shaped under the fixed principles but it was simultaneously reflecting the local temporality and spatiality. As Chosun Dynasty went under the Japanese colonization, Eupchi in the traditional period started to evolve into a modem city. That is to say, the traditional Eupchi as a political place became to change into the center of capital accumulation, stronghold of economy and education, and center of town beyond the function as a place for government and administration. Therefore, the process of change from the landscape of Eupchi to a modem city was a kind of revolution in the form and function, and it was also a very rapid rearrangement of social space. The disparate element of landscape and double social space worked as a vital inertial element in the urban structure of Naepo area until the post independence and evolution of landscape.

• The KIPS Transactions:PartD
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• v.10D no.4
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• pp.567-576
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• 2003

Spatial data mining, i.e., discovery of interesting characteristics and patterns that may implicitly exists in spatial databases, is a challenging task due to the huge amounts of spatial data. Clustering algorithms are attractive for the task of class identification in spatial databases. Several methods for spatial clustering have been presented in recent years, but have the following several drawbacks increase costs due to computing distance among objects and process only memory-resident data. In this paper, we propose an efficient grid cell based spatial clustering method for spatial data mining. It focuses on resolving disadvantages of existing clustering algorithms. In details, it aims to reduce cost further for good efficiency on large databases. To do this, we devise a spatial clustering algorithm based on grid ceil structures including cell relationships.

• 한국지구과학회:학술대회논문집
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• 2006.02a
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• pp.213-218
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• 2006

이 논문에서는 지구통계학적 시뮬레이션을 이용하여 자료 표현에서의 불확실성이 최종적인 공간통합에 미치는 영향을 정량적으로 분석하고자 하였다. 광물자원 탐사를 위한 공간통합 사례연구를 통해 시뮬레이션 결과에 따라 예측 능력의 차이가 나타남을 확인 할 수 있었으며, 결론적으로 지구통계학적 시뮬레이션이 공간 자료의 불확실성 모델링에 효율적으로 이용될 수 있을 것으로 판단된다.

• Bulletin of the Korean Institute for Industrial Safety
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• v.1 no.1
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• pp.34-39
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• 2001

최근에 들어서 지하전철의 건설 확대와 도시 지하차도 및 지하구조물의 건설 수요증가 등 대규모 지하생활 공간의 개발이 추진되고 도시 기능의 집중화로, 공간의 유효 이용의 관점에서 적극적으로 지하공간을 활용하고 있는 실정이다. 이와 같이, 기존 건물의 심층화와 지하 주차장 및 지하가, 지하철역 등의 활용성이 증가하면서 더욱 이들 지하 다중이용 시설의 심도화와 대규모화가 이루어지고 있는 것이다. 그러나, 이들 지하시설의 경우, 안전성과 쾌적성을 부여하기 위한 자연채광, 방재, 환기 기술분야의 설계와 시공 기술 등이 선진국의 경우에 비하여 아직 취약한 실정이어서, 이들 시설 공간에서의 환경악화 현상이 클 뿐만 아니라, 특히 방재상의 문제점으로 화재가 발생시, 인명의 피난과 소화 활동의 곤란성 등이 지적되고 있는 것이다.(중략)

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.372-376
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• 2017

기후변화에 따른 재해취약성 분석에 있어 분석단위가 되는 집계구 단위와 더불어 동 단위를 추가하여 기후노출의 공간분석단위에 대한 검토를 실시하였다. 기후노출에 대한 분석은 도시 기후변화 재해취약성분석 매뉴얼(Ver 3.0)에서 제시되고 있는 ArcGIS의 Jenks 최적화방법을 활용하여 네 단계로 구분하였다. 기후노출지표는 폭우재해의 연평균 80mm/일 이상 강우일수, 연평균 시간최대강우량의 두 가지 지표를 활용하였으며 현재 기후노출지표만을 고려하여 분석하였다. 분석에 요구되는 기후노출 지표값은 경상북도 인근의 최근 10년간 기상청 강우 자료를 활용하여 분석하였다. 공간분석 단위의 검토 결과, 기후노출 지표 특성에 따라 기후노출의 지리적 분포양상은 다르게 나타나며, 현재 매뉴얼에서 제시하고 있는 집계구 단위를 통한 분석과 추가적인 동 단위를 통한 분석은 지역별로 직접영향권과 간접영향권이 뒤바뀌는 양상까지 보이는 것으로 나타났다. 따라서, 재해취약성 분석에 있어 재해특성별 공간분석 단위의 결정은 도시기본계획, 도시관리계획 등의 활용성을 감안해 볼 때 매우 신중히 결정되어야 할 사항이며, 공간분석 단위의 결정에 대한 연구가 향후 꾸준히 이루어져야 할 것으로 판단된다.

• Journal of the Korean Association of Geographic Information Studies
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• v.11 no.1
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• pp.155-166
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• 2008

The quantitative bivariate spatial pattern analysis was applied for the water quality and nutrients data of Masan Bay, and for this analysis Pearson's r as aspatial correlation measurement, Moran's I as spatial association measurement and L index as integration of aspatial and spatial measurement methods were used. To understand the aspatial and spatial characteristics implicated in L index, Pearson's r as well as Moran's I were classified into 3 types respectively, and Pearson's r and Moran's I were combined with 9 types, and also quantile of L index value was used for each of those 9 types. Finally, these types were defined as 5 groups having not overlapped L index range. According to the application result of L index groups, bivariate water quality and nutrients showed no aspatial correlation regardless of spatial association in February and July, but they showed aspatial correlation having clustered spatial pattern in May and November. The result of this study providing the guideline for the interpretation of aspatial correlation and spatial association using L index is expected to be helpful for the marine environment pattern analysis using quantitative index for further study.

• Journal of Korea Spatial Information System Society
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• v.6 no.2 s.12
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• pp.63-75
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• 2004

This paper proposes a Web Service framework on both wired and wireless network environment that can be interoperable and extensible among geo-spatial servers. Mostly, OGC has studied and announced international standards which are related to web services on various kinds of geo-spatial data. Therefore, the proposed framework satisfies interoperability and extensibility for geo-spatial servers by adapting WMS, WFS, WCS, and WRS standards of OGC and web services standards of W3C. This framework, also, satisfies requirements of huge volumed data service, GML service, geo-spatial function service, and wireless network service. This framework consists of geo-spatial servers group, geo-spatial broker, and web-based client. The geo-spatial servers group includes GIS, SIIS, ITS, GNSS, and Telematics server for the purpose of providing various kinds of geo-spatial services. Especially, this paper proposes main memory based GIS server(MMG server) that can efficiently serve huge volumed GML data on wireless network environment. Finally, experimental results about the MMG server and prototype implementations of the framework show the effectiveness of this study.