• Communications for Statistical Applications and Methods
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• 제12권2호
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• pp.539-544
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• 2005

In this paper, we propose the one-step least squares method based on the squared differences to estimate the parameters of the variogram used for spatial data modelling, and discuss its asymptotic efficiency. The proposed method does not require to specify lags of interest and partition lags, so that we can delete the subjectiveness and ambiguity originated from the lag selection in estimating spatial dependence.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제14권2호
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• pp.25-34
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• 2008

The purpose of this study was to spatial organization feature and area composition of the over 500beds general hospital that will be expected construct in Seoul, Gyeonggi-do area after 2000year. From this study, we can suggest architectural planning for the efficiency operating of emergency medical facilities that can be used as preliminary data. The Spatial organization of emergency medical facilities are categorize into 4 session as medical examination and treatment, diagonosticradiology, staff, public and the others. We can find spatial organization system and area composition that compare area composition of 6 hospital the subject of research in a emergency medical facilities. The result of this study were as follows : spatial distribution of its field, grasping of spatial organization factor and recognize its merits and demerits should be researched in advance. Through this kind of recognizing emergency system, realistic medical local and condition architectural planning for spatial organization will be operate.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2010년 춘계학술발표회 논문집
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• pp.133-136
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• 2010

A lot of GIS DB in Korea is distributed and integration for decision making is difficult. Therefore, the SDW is needed to improve the problems and enhance efficiency. The SDW is used for making decisions about various problems by integrating scattered spatial information. This study analyzes business activity of a local government and plan the data cube to implement spatial OLAP for an efficient decision making.

• 한국통신학회논문지
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• 제29권6A호
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• pp.677-682
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• 2004

본 논문에서는 C-band의 중심 주파수인 6 GHz 대역을 중심으로 광대역 공간 전력 합성기를 설계, 제작하여 그 특성을 고찰하였다. 제안된 공간 전력 합성기는 광대역 특성을 갖는 입ㆍ출력 안테나에 평면형 다이폴 안테나를 사용함으로서 기존의 공간 전력 합성기의 대역폭의 제한을 극복하였고 입ㆍ출력 안테나의 편파를 교차편파가 되도록 사용하였기 때문에 입력단과 출력단의 격러도를 높여서 공간 전력 합성기의 안정성을 향상 시켰다. 설계된 입력부와 출력부 안테나의 대역폭은 각각 24.8%와 23%의 대역폭을 얻었다. 제작한 4${\times}$l 공간 전력 합성기는 6 GHz에서 24.04 dB의 유효 등방성 이득(EIPG), 17% 이상의 이득 대역폭, 68.69%의 전력 합성 효율을 얻었다.

• 한국멀티미디어학회논문지
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• 제20권7호
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• pp.1090-1101
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• 2017

This study analyzes spatial density and integration of Space Syntax and Discrete Event Simulation (DEVS) of complex system theory and analyzes spatial structure by property, type and depth. The aim of this study is to secure the validity of the theoretical application. The study evaluated the correlation between spatial density and integration by setting up eight types of analysis models. In addition, analyzed the correlation of structural characteristics and approached the application of discrete event simulation of spatial syntax theory. It is confirmed that the concept of integration of spatial syntax theory and analysis using discrete event simulation are valid as new spatial analysis methodology. Also expect that realistic and concrete predictions will be possible if discrete event simulation evolves into research for space allocation and space efficiency optimization.

• 한국지리정보학회지
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• 제13권2호
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• pp.1-10
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• 2010

본 연구는 공공재 성격을 가지고 있는 공공시설의 입지선정에 관한 연구로서, 공공시설 입지시 효율성뿐만 아니라 형평성을 고려한 입지선정 모델을 구축하고, 보다 실세계를 반영할 수 있는 공간분석방법을 사용하여 충청남도 금산군 문화시설의 최적입지를 분석하는데 목적이 있다. 연구방법으로 첫째, 입지결정인자를 선정하기 위하여 전문가 설문조사를 실시하고, 상대적 가중치를 적용하기 위해 AHP를 적용하였다. 둘째, 위성영상을 이용하여 시가화 구역을 추출함으로써, 실세계를 모델에 반영하였다. 셋째, 공공시설 입지분석을 위해 입지배분모델을 사용하였으며, 분석시 불균등한 인구분포를 모델링에 구현하였다. 이를 통하여 기존의 일반적 입지분석 기법인 그리드 분석과 네트워크 분석 두 기법을 동시에 적용하여, 보다 정확하고 실세계를 반영할 수 있는 공간분석을 하였다.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.558-565
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• 2013

The process and efficiency of monitoring building and construction violations is a concern of the construction industry. The detection of violations requires appropriate and sufficiently accurate spatial information to manage and support a comprehensive inspection process and monitor compliance. A building inspection workflow must extract appropriate spatial and measurement in-formation from a variety of sources, identify potential violations across a range of compliance criteria and determine the quality of resulting inspection reports. This paper presents a framework for supporting building inspections using spatial information and methods to detect construction violations and compliance. Current inspection processes involve issues around the identification of building violations, access to building regulations and existing spatial information, integration of a range of spatial and non-spatial information, and the quality of decisions within the inspection workflows. A survey of building inspectors was conducted and used together with the issues identified to establish the requirements for a spatial inspection framework. The results demonstrate how such a framework can support improved decision-making and reduced fieldwork effort in detecting and measuring the accuracy of building violations involving building placements, street offsets and footprint areas.

• 응용통계연구
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• 제17권2호
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• pp.327-336
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• 2004

이상점이 존재하는 공간자료(spatial data) 분석에서 이상점(outlier)의 영향력를 줄이기 위 한 방법으로 로버스트 변이도(robust variogram)를 사용한다. 최근 이상점을 먼저 수정한 후 변이도를 추정하는 방법을 사용하면 더 좋은 분석결과를 얻을 수 있다는 것이 알려졌다. 본 논문에서는 이상점이 존재하는 공간자료 분석에서 Mugglestone 등(2000)이 제안한 이상점 수정법과 본 논문에서 제안한 새로운 이상점 수정법의 효율성을 비교하였다.

• 국제초고층학회논문집
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• 제4권2호
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• pp.153-160
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• 2015

As the predominant mode of vertical urban development in China, mixed-use complexes provide the optimal case for the research of sustainable and vertical urbanism. This paper reviews three typical mixed-use complexes with various vertical space systems in Shanghai via the combination of field observation, questionnaires and software analysis. It then proceeds to determine which vertical space system is most effective for encouraging sustainable vertical urban development from the perspective of spatial efficiency. Finally, it concludes with an evaluation of the relative capabilities of the design features of a mixed-use complex: to create external dimensional-connections, to create multiple internal connections, and to organize overall composite functions.

• Journal of Information Processing Systems
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• 제18권2호
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• pp.235-244
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• 2022

Many new techniques have been adopted in HEVC (High efficiency video coding) standard, such as quadtree-structured coding unit (CU), prediction unit (PU) partition, 35 intra-mode, and so on. To reduce computational complexity, the paper proposes two optimization algorithms which include fast CU depth range decision and fast PU partition mode decision. Firstly, depth range of CU is predicted according to spatial-temporal correlation. Secondly, we utilize the depth difference between the current CU and CU corresponding to the same position of adjacent frame for PU mode range selection. The number of traversal candidate modes is reduced. The experiment result shows the proposed algorithm obtains a lot of time reducing, and the loss of coding efficiency is inappreciable.