• Proceedings of the Korean Society of Crop Science Conference
• /
• 2005.08a
• /
• pp.75-87
• /
• 2005

Remote sensing(RS)- and geographic information system(GIS)-based information management to measure and assess agri-environment schemes, and to quantify and map environment indicators for nature and land use, climate change, air, water and energy balance, waste and material flow is in high demand because it is very helpful in assisting decision making activities of farmers, government, researchers, and consumers. The versatility and ability of RS and GIS containing huge soil database to assess agricultural environment spatially and temporally at various spatial scales were investigated. Spectral and microwave observations were carried out to characterize crop variables and soil properties. Multiple sources RS data from ground sensors, airborne sensors, and also satellite sensors were collected and analyzed to extract features and land cover/use for soils, crops, and vegetation for support precision agriculture, soil/land suitability, soil property estimation, crop growth estimation, runoff potential estimation, irrigated and the estimation of flooded areas in paddy rice fields. RS and GIS play essential roles in a management and monitoring information system. Biosphere-atmosphere interection should also be further studied to improve synergistic modeling for environment and sustainability in agri-environment schemes.

• Spatial Information Research
• /
• v.2 no.1
• /
• pp.15-25
• /
• 1994

Geographical Informal ion Systems have become useful tools for improving the administrative management of local governments. Despite its innovative aspects, GIS implementation in local governments has yet to be actively carried out, utilized in only a few occasions in establishing comprehensive plans or conduct ins model system developments. This can be basically attributed to technological, institutional, and economic difficulties, that is, a lack of understanding of GIS technology, database development, and the required institutional support. Using Seoul as a case study, this study analyses the potential and effectiveness of GIS and examines strategies of implementation, thereby suggesting basic policy direct ions for GIS investment in local governments.

• Spatial Information Research
• /
• v.11 no.4
• /
• pp.391-407
• /
• 2003

Recently, a lot of interests are commanding in link practical use of country information and cadastral information for management of efficient country resource and administration of land. As map information, a lot of interests are commanding in construction of synthetic informations system including digital map and cadastral map. In this study, achieves analysis about non-coincidence causes of digital map and cadastral map, and achieve investigation about representative algorithm that is used in conversion of map for correct overlay between two map and opes overlay plan. Also, presented plan that can ready fetters for integration database construction of digital map and cadastral map by achieving study about matching security plan between map and plan elevation of the quality.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.8 no.1
• /
• pp.1-12
• /
• 2005

Land suitability assessment is the procedure that assesses development, agriculture or conservation suitability of land according to such criteria as soil, location and usability. But there are many problems to execute land assessment by law. Problems include inadequate basic data, lack of linkage with the spatial planning system, and inefficiency in operation. The purpose of this study is to improve methods of land suitability assessment as a sustainable land use management tool using case study. In this study, land suitability assessment will be executed through GIS. On the basis of the results of this case study, practical and institutional problems are described, and technical solutions are suggested.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2018.10a
• /
• pp.984-987
• /
• 2018

In an Internet of Thing (IoT) environment, entities with different attributes and capacities are going to be connected in a highly connected fashion. Specifically, not only the mechanical and electronic devices but also other entities such as people, locations and applications are connected to each other. Understanding and managing these connections play an important role for businesses, which identify opportunities for new IoT services. Traditional approach for storing and querying IoT data is used of a relational database management system (RDMS) such as MySQL or MSSQL. However, using RDMS is not flexible and sufficient for handling heterogeneous IoT data because these data have deeply complex relationships which require nested queries and complex joins on multiple tables. In this paper, we propose a graph model for constructing a graph database of heterogeneous IoT data. Graph databases are purposely-built to store highly connected data with nodes representing entities and edges representing the relationships between these entities. Our model fuses social graph, spatial graph, and things graph, and incorporates the relationships among them. We then present a case study which applies our model for representing data from a Smart Campus using Neo4J platform. Through the results of querying to answer real questions in Smart Campus management, we show the viability of our model.

• Journal of Cadastre & Land InformatiX
• /
• v.48 no.2
• /
• pp.153-170
• /
• 2018

The purpose of this study is to diagnose problems by analyzing the status of system and user in order to activate the Urban Planning Information System(UPIS). The UPIS has been distributed to all local governments through pilot and expansion projects since 2003 to utilize spatial information in urban planning and administration. The original purpose was to use GIS to support planning and to support scientific decision making, but now the main task is to designate and manage zoning districts related to land use. Therefore, the UPIS is responsible for the production (preparation procedure) and management of the local district information for use in the Korea land use information system, which is an upper concept defined by the law, but it is evaluated that its identity is ambiguous and utilization rate is low. This study is conducted to investigate the four aspects (business process, database, system, citizen service) of UPIS, and suggest concrete improvement measures. To summarize, each individual system exists in the Korea land use information system, but they all share similar data and have a linked work flow. Therefore, we suggested that the DB current plan should be established to improve the reliability of data and to redefine the business process around the UPIS.

• Journal of Korea Spatial Information System Society
• /
• v.7 no.3 s.15
• /
• pp.55-65
• /
• 2005

This paper presents a bulk insertion technique for efficiently inserting data items. Traditional moving object database focused on efficient query processing that happens mainly after index building. Traditional index structures rarely considered disk I/O overhead for index rebuilding by inserting data items. This paper, to solve this problem, describes a new bulk insertion technique which efficiently induces the current positions of moving objects and reduces update cost greatly. This technique uses buffering technique for bulk insertion in spatial index structures such as R-tree. To analyze split or merge node, we add a secondary index for information management on leaf node of primary index. And operations are classified to reduce unnecessary insertion and deletion. This technique decides processing order of moving objects, which minimize split and merge cost as a result of update operations. Experimental results show that this technique reduces insertion cost as compared with existing insertion techniques.

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.10b
• /
• pp.73-75
• /
• 2004

최근에 무선 인터넷과 이동 컴퓨팅 기술이 발전하고, 휴대 전화, PDA와 같은 이동 단말기가 보편화됨에 따라 사용자의 위치 정보를 활용하는 위치 기반 서비스(LBS: Location Based Service)가 다양한 분야에서 제공되고 있다. 모바일 환경에서 위치 기반 서비스를 제공하기 위해서는 모바일 장치에서 대용량의 공간 데이타를 신속하게 처리하고 효과적으로 관리하기 위한 공간 MMDBMS(Main Memory Database Management System)가 필요하다. 이에 본 논문에서는 기존의 PC용 MMDBMS인 HSQLDB를 확장하여 모바일 장치에서 공간 데이타를 효율적으로 관리할 수 있는 공간 MMDBMS를 설계 및 구현하였다. 공간 MMDBMS는 OGC의 공간 데이타 모델을 따르며, 공간 데이타 특성에 적합한 압축 기법인 산술 코딩 기법을 제공하고, 모바일 장치에 적합한 MBR 압축 및 해슁 기법을 이용한 공간 인덱스를 지원한다. 그리고, 모바일 장치의 낮은 성능의 프로세서에서 공간 데이타 디스플레이 기능을 제공하고, 모바일 장치와 디스크 기반 GIS인 ZEUS 사이에서 공간 데이타 import/export의 성능 향상을 위한 데이타 캐쉬 기능을 지원한다.

• 한국공간정보시스템학회:학술대회논문집
• /
• 2005.05a
• /
• pp.441-446
• /
• 2005

막대한 비용을 들여 모든 건설공사에서 시행하는 지반조사의 결과물을 현재는 종이문서 형태로 각 관리주체가 개별적으로 보관하고 있어 재활용과 공유가 거의 이루어지고 있지 않은 실정이다. 이를 데이터베이스화하여 웹을 통해 서비스함으로써 효과적인 저장과 활용을 유도할 수 있다. 그 일환으로 현재 웹 기반의 지반정보 통합 D/B 시스템을 구축, 운영 중에 있다. 현재는 지방국토관리청이나 공사현장과 같이 지반정보가 발생하는 기관 및 현장을 직접 방문하여 지반조사 결과물을 수집한 후 이를 전산화와 검수를 실시해 시스템에 반영을 하는 방식으로 지반정보를 데이터베이스화하고 있지만, 많은 시간과 비용이 소요되고 수집에 한계가 있어 이를 개선하기 위한 자동화시스템의 도입이 검토되고 있다. 지반정보의 수집, 전산화, 검수, 웹서비스의 일련 과정을 보다 자동화시키고, 효과적이며, 수집범위를 획기적으로 넓힐 수 있는 방안으로 웹 기반의 입력자동화 시스템 도입, 지반정보 관리 주체의 직접 입력 지침 마련, 입력 실무자에 대한 권한 부여와 사용자 교육 등에 대한 전략을 본 연구를 통해 모색해 보았다.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.31 no.3A
• /
• pp.173-180
• /
• 2011

This paper aims to propose an image processing technique for measuring the static displacement of bridges from general inspection photograph; the color, shape, and spatial transformations of an arbitrary image stored in bridge management system database are used. This study is verified by using numerical analyses with experiments; the results demonstrate that the static displacement of bridges are measured by proposed technique. Moreover, this technique is able to obtain the static structural response of the bridge with changes in temperatures.