• Journal of Korea Spatial Information System Society
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• v.10 no.1
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• pp.1-14
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• 2008

Recently, because of the need to wide-area spatial data for spatlal analysis and military purpose, there are increasing demand for the efficient retrieval of mass spatial data in Geographic Information System(GIS) fields. Oracle Spatial and ESRI ArcSDE, that are GIS Software, are to manage mass spatial data stably and to support various services but they are inefficient to retrieve mass spatial data because of the complexity of their spatial data models and spatial operations. Therefore, in this paper, we developed a spatial middleware that can retrieve mass spatial data efficiently. The spatial middleware used Oracle which is a representative commercial DBMS as a repository for the stable management of spatial data and utilized OCCI(Oracle C++ Call Interface) for the efficient access of mass spatial data in Oracle. In addition, various spatial operating methods and the Array Fetch method were used in the spatial middleware to perform efficient spatial operations and retrieval of mass spatial data in Oracle, respectively. Finally, by comparing the spatial middleware with Oracle Spatial and ESRI ArcSDE through the performance evaluation, we proved its excellent retrieval and storage performance of mass spatial data.

• Journal of Korean Association for Spatial Structures
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• v.5 no.3 s.17
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• pp.91-100
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• 2005

The paper presents a direct method for the diplacement control and stiffness redesign using displacement and response force contribution factors. At first, these two kinds of factors are derived and the relationship between them is examined. An equation to evaluate the change of displacement according to the change of each member stiffness is proposed. For the statically determinate structures, the proposed equation gives the exact solution with no approximation. But it has some error in case of statically indeterminate structures because the redistribution of response forces is neglected in the equation. However, the equation may be very useful even for statically indeterminate structures because it provides the relationship between the member stiffness and the global displacement. The proposed method is expected to be useful for the displacement control of large space or hi-rise building structures where the stiffness design governs the design result.

• Journal of the Korean Geographical Society
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• v.33 no.2
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• pp.253-274
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• 1998

본 논문은 우리날의 자동차산업의 성장과 자동차의 물류체계구조를 공간적인 측면에서 분석한 것이다. 자동차 생산이 이루어진 이후 불과 30여년만에 우리나라는 세계 5위의 자동차생산국으로 부상하였다. 자동차 물류체계구조는 크게 배송체계와 판매체계로 구분된다. 자동차 3사 모두 잠재수요력과 효율적인 배송을 위해 출고장을 입지시키고 전국을 광역화하여 출고장의 공급지역을 관할하고 있다. 한편 판매체계를 보면 지역본부, 지점, 영업소의 계층구조를 구축하여 전국을 대권역, 중지역, 소구역으로 세분하여 판매의 공간구조를 구축하고 있다. 기본적으로는 자동차 잠재수요를 바탕으로 하여 판매거점이 형성되고 있으며, 지역본부에 속해 있는 지점들과 영업소들의 영업활동은 어느 정도 설정된 관할구역내에서 이루어지고 있다. 앞으로 자동차 산업을 발전시키기 위해서는 기술 개발과 해외시장 침투도 중요하지만 유통구조의 합리화를 통한 경쟁력 제고도 매우 중요하다.

• Journal of the Korean association of regional geographers
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• v.19 no.1
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• pp.97-110
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• 2013

The purpose of this study is to investigate the change of spacial structure from rural space to urban space and to examine the characteristic of spacial restructure, focusing on the Hwamyeong-Dong of Buk-gu in Busan. Hwamyeong-Dong has changed from rural area to urban area because of spacial expansion owing to industrialization and urbanization. The unique natural environment, rural village, etc. were disappeared and instead the apartment complex, commercial building, and so on were built. For this reason, historic and concrete place were vanished and so the spacial homogenization and uniformization were formed centering around apartment complex. But the singularity of Hwamyeong-Dong exposes in the way that unique history, custom and memory, trace of Hwamyeong-Dong preserved through the support and effort of the residents and that the Daechen stream changed to ecological stream. In addition, Hwamyeong-Dong altered heterogeneous, multi-layered urban space from homogeneous rural space in terms of the apartment supply sectors and scale, the distribution and kind of commercial facility, residents's composition. This has brought about the subdivision, hierarchization of the space as well as the residence, education, culture. Especially, Hwamyeong3-Dong that built to large scale apartment complex are significantly different from Hwamyeong2-Dong. Hwamyeong2-Dong is marginalizing step by step. However, It is found that the residents in Hwamyeong2-Dong are making an effort for liveable place with ecological residential community and educational cultural community as the center.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10a
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• pp.358-360
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• 1999

최근 웹의 활성화로 인하여 인터넷이 대중화되면서 지리 정보 시스템 분야에서도 웹 기반의 공간 데이터의 검색 및 관리의 필요성이 대두되었다. 또한, 지리 정보 시스템에서 다루는 공간 데이터는 가변적이고 대용량이기 때문에 이러한 데이터를 효율적으로 처리하기 위해서는 공간 OODBMS의 사용이 적합하다. 이러한 웹 기반 공간 OODBMS를 사용하는 실제 응용프로그램에서 다중 사용자 환경에서의 협동 작업이 효율적으로 수행되기 위해서는 개별적인 객체 중심의 버전 관리에 그치지 않고 일정 영역내의 연관된 버전화된 객체들의 집합인 복합 객체를 효율적으로 관리하는 것이 절실히 필요하다. 이에 본 논문에서는 다중 사용자 환경에서 연관된 버전화된 집합인 복합 객체를 효율적으로 관리하는 웹기반 공간 OODBMS를 위한 형상 관리자를 설계 및 구현한다. 이를 위해 형상 관리 기능을 지원하는 기존의 시스템인 Open OODB와 RCS, 그리고 SCM에서의 형상 관리 모델에 대해서 알아보고, 형상 관리자의 관리 모델과 자료 구조를 설명한 후 형상 관리자 설계시의 고려사항에 대해서 언급한다. 마지막으로, 형상 관리자의 구성 모듈과 형상 관리가 API에 대하여 기술한다.

• Electronics and Telecommunications Trends
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• v.30 no.5
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• pp.28-38
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• 2015

최근 빈번히 발생하고 있는 도심지 내 지반침하의 주된 원인은 지하공간의 난개발, 상하수도 시설의 노후화, 이로 인한 급격한 지하 수위의 변화에 기인한다고 알려져 있으며 이에 대한 실시간 모니터링 및 종합적인 상관성 분석을 통한 사고예방이 시급한 실정이다. 지하공간의 특수성으로 인해 광역 지하공간 정보를 실시간으로 수집하여 모니터링할 수 있는 기술이 부재한 점과 이로 인한 지하공간의 위험도 분석과 과학적 재난대응 시스템 구축에 어려움이 존재한다. 본고에서는 도시 지하공간 내 지하매설물(상하수도)의 상태와 지하공간상황(도시철도구조물, 지하수, 지반변형)을 실시간으로 모니터링하기 위한 도메인별 기술개발 동향에 대해서 정리하고, 수집된 정보의 종합적 분석을 통한 지하공간의 이상 징후를 사전감지, 예측, 대응하기 위해 도전하고 있는 기술적 이슈들을 살펴보고자 한다.

• Journal of the Korean Association of Geographic Information Studies
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• v.23 no.2
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• pp.83-94
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• 2020

Busan Metropolitan City, a research site of this study, was promoted to a metropolitan city in 1995 with the implementation of the local autonomy system, and the overall change was made as it absorbed the surrounding areas to address the shortage of population and space. Twenty-five years after the introduction of the local autonomy system, it is necessary to diagnose whether balanced development of the entire city is being made in accordance with the reorganization of the metropolitan city in terms of spatial structure. In this study, changes in spatial structure and regional characteristics were analyzed by applying population potential, which means potential for future spatial interaction, in time and space. According to the analysis, the development was taking place around the center area and the sub-center established by the urban master plan, but Gangseo-gu and Gijang-gun, which were incorporated in the past, remained stagnant. In addition, it was shown that the spatial expansion of the city was suppressed by the green belt surrounding the city. However, in other regions where the green belt is located, the city has been expanded, which is different from Gijang-gun or Gangseo-gu, which was incorporated into the metropolitan city. Therefore, the cause of the decline in incorporated areas should not be limited to the institutional dimension of land use regulation. Growth management and balanced development plans will be necessary for the development of declining old downtowns and underdeveloped incorporated areas.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10c
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• pp.218-220
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• 1999

인터넷과 네트웍 기술의 급속한 성장에 따라 간단하고 효율적이며, 관리가 용이한 분산 어플리케이션의 필요성이 증대되었다. 이러한 요구사항을 만족시키기 위하여 네트워크 상에 분산되어 있는 자원, 서비스 및 객체의 공유와 이들 사이의 통신을 일관된 방법으로 지원하는 튜플스페이스(Tuple space) 시스템들이 제안되었다. 그러나, 기존의 시스템들은 서버를 통한 중앙 집중적인 공유공간(shared space) 구조를 가지고 있으므로 서버의 실패(crash)나 네트워크의 분할(partition)과 같은 전산망의 결함이 발생하였을 경우 지속적인 서비스를 제공할 수 없게 된다. 본 논문에서는 특정 목적에 따라 그룹화된 공유공간의 생성이 가능하고 객체를 관련노드에 중복(replication)해서 저장할 수 있는 튜플스페이스 시스템인 ObjectSpace의 설계 및 구현에 대하여 설명한다. ObjectSpace는 객체를 공유하기 위하여 공유공간에 객체를 저장하는 기능과 공유된 객체를 조회하는 기능을 제공한다. 중복된 객체들에 대하여 일관성을 유지하기 위하여 그룹을 지원하는 JACE 그룹통신시스템을 하부구조로 사용하여 구현하였다.

• Journal of the Korean Regional Science Association
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• v.34 no.4
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• pp.49-60
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• 2018

To restore urban water cycle, it is necessary to improve domestic laws and regulations related to LID(Low Impact Development), which has been successfully applied to foreign countries. Thus, this study has intended to evaluate domestic legal systems related to space and environmental planning and to suggest directions to improve laws and regulations related to space and environmental planning toward extended application of LID in Korea. To reach this goal, this study has analyze the legal and institutional status of the foreign countries where LID has currently been applied, to derive the factors that laws and institutions are required to support LID based on the above analysis, to evaluate domestic laws and regulations related to space and environmental planning, and to suggest directions to improve the laws and regulations. After the evaluation, this study has found the following results. First, it was found that the concept and basic principles of LID and LID planning and associated methods were no longer mirrored in the space planning-related laws and regulations. However, these problems are not confined to LID, and result from thefailurein applying environmental planning to space planning overall. Second, it was revealed that the environmental planning-related laws and regulations defined the terminologies and targets of LID and suggested different measures to improve LID-related policies differently depending on the backgrounds ofenforcing thelaws and regulations and on environmental properties. Finally, this study has suggested the directions to improve laws and regulations related to space and environmental planning as follows. First, it is necessary to enact a law to support the extended application of LID. Second, the law to be enacted should be connected to laws, enforcement ordinances and regulations, and guidelines related to space planning. Third, environmental benefits provided by both structural and non-structural techniques of LID should be quantitatively measured.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 1996.06a
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• pp.79-109
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• 1996

In order to transform the underground utility data into the 3-D spatial objects, this thesis defined the type of the 3-D spatial objects and the storage structure of objects, and developed the spatial data transformation system that transforms the 2-D underground utility data into the pre-defined 3-D spatial objects through the Booch Method, an object-oriented development method. For this sake, the relational data model of ARC/INFO and the storage structure are analyzed, as well as the pre-requisites, required for the 3-D visualization of the underground utilities. Also, the 2-D underground utility data, saved in ARC/INFO, were transformed into the ASCII files through the internal pre-processing procedure, then used as the input data of the transformation system. In addition, to develop the transformation system, the object-oriented development methods are studied first and, then, applied to the system analysis and the design procedure with the Booch Method as a development method. Finally, the results of analysis and design procesure are implemented through AML, a ARC/INFO macro language, and C++, an object-oriented programing language. As a result of this study, the 3-D spatial objects that can visualize the 2-D utilities in 3-D, are acquired, and the adaptation of object-oriented development method to the system development procedure enabled an effective development prodedure.