• Journal of the Korean Institute of Intelligent Systems
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• v.16 no.4
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• pp.423-429
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• 2006

The systems in the ubiquitous computing environment need to provide users with context-aware services, intelligently interacting with the surrounding environment. Therefore, the systems in the ubiquitous computing environment require context-awareness ability in order to gather and analyze context information in various situations and environments. However, existing context-aware systems lack the ability to systematically generate and handle various types of context information, and only a few systems have ability learning from environment. In this paper, a general context model is defined to describe various contexts and a context-awareness framework is implemented based in the model, which makes it straightforward to handle and generate various types of context from diverse sensor. The framework is designed to allow a system to sensed, combined, inferred, and learned context information, in order to provide users with services in dynamic environments. We have implemented the proposed framework and applied it to a u-Health management system.

• Journal of Korean Society for Geospatial Information Science
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• v.13 no.3 s.33
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• pp.53-57
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• 2005

The moors ecosystem is sensitive environment change and weak in artificial interference. These nature property are very important to people. It is necessary to preservation and protection the moors with a countermeasure. We really need to Environment-GIS(E-GIS) using Geographical Information System(GIS) and digital map including range, correct position and attribute data of moors. In this study, we take priority of making a database of moors management. Taking effect an environment assesment, we concentrate on a standard method of digital map production and a preservation of moors in our research using GIS. Especially, we have to preserve our important national heritage using GIS when Environment Assesment is conducting under construction. We suggest to pre-estimated model of hidden moors as analysing terrain, geological feature, a geographical distribution of plants and animals using GIS.

• Convergence Security Journal
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• v.14 no.3_2
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• pp.13-21
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• 2014

Three sides by the waters of the country in which the topography of the peninsula is a treasure trove of natural resources in the country to recognize the importance of the sea and maritime territorial and maritime policy for the protection of rights, such as to promote the country striving to strengthen haeyangryeok. However, marine activities is 200 sea miles exclusive economic zone of the stage (EEZ) and the continental shelf extends as the, EEZ waters of the overlapping jurisdiction, Books sovereignty, marine scientific research and development, including the continental shelf surrounding the deepening relationship between the neighboring countries and complex understanding including international cooperation and coexistence between countries to be competitive. This time the Coast Guard 's maritime sovereignty existing patron driven from the accident prevention safety management system, from our sea, has been kept firmly. However, due to the new issue of disaster lies in the fate of marine police became dismantled. This real time so that you can be reborn as a marine police force structure. Structure to change the way the rescue operation. Expenses, Shore, you will need to increase the professionalism of pollution.

• IE interfaces
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• v.19 no.2
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• pp.140-152
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• 2006

Today, many companies realize that the effort to develop new products / services faster that customers want and continue to purchase is crucial for their survival. As the service sector is rapidly growing, one of the challenges faced by the service industries is the lack of effective methodologies for new service development. This paper proposes a systematic framework for developing new service concepts, with an emphasis on generating innovative, convergence-type service concepts from the customer‘s perspective. The framework consists of three phases-identification of customer needs (Phase I), extraction of new service opportunities (Phase II), and generation of new service concepts (Phase III). The proposed framework is demonstrated through a case study in the telecommunications industry. In the case study, a survey was conducted on ten customers to identify the latent customer needs; 61 new service opportunities were extracted; and 129 new service concepts were generated.

• Journal of Korean Society for Geospatial Information Science
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• v.5 no.2 s.10
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• pp.13-27
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• 1997

For the National Geo-Spatial Information System the development of the National Digital Basemap database is actively underway in Korea. For the National Digital Basemap database to be truly useful for various applications development it is essential to maintain its reliability. To maintain the reliability of the database it is necessary to understand the nature and the frequency of the errors in it. In general, a data inspection under the standardized quality control process is required to maintain the quality of a large database. In addition, it is important to maintain complete and detailed records of the inspection results so as to understand the relationship between the m and other factors causing errors. These records can be used as a reference for map updates and future application development. The goal of this study is to count the frequency of errors based on the typology of errors found in the digitized map inspection process and to analyze the correlation between errors and topographic composite quotient This study also provides guidelines for the inspection process regarding the error-prone cartographic elements in the digital map generation process.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.342-342
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• 2011

댐의 건설로 인해 자연적인 물의 흐름이 댐 운영에 의하여 조절되기 때문에 유사의 연속성 및 유량의 변화에 따른 지형 환경적 변화가 예상된다. 따라서 영향분석을 위한 체계적인 조사 및 연구가 필요할 것이다. 본 연구는 내성천 영주댐 건설 예정지로부터 48.4km 하류인 회룡포 구간에서 하상변동이 예상됨에 따라 현장 조사를 수행하고, 장래변화를 예측하기 위하여 수치모델을 수행하였다. 수리학적 변화량은 금회 수립중인 하천정비계획의 계획 홍수량인 댐건설 전 4,040cms, 댐건설 후 2,934cms로 구분하고, 유사변화량은 영주댐 실시설계 보고서결과를 적용하여 분석하였다. 한편 2001년과 2010년의 실측종단변화를 검토한 결과, 회룡포 구간에서 0.5m~1.7m의 퇴적이 진행되고 있음을 알 수 있었다. 수치모델 및 실측한 데이터를 종합적으로 판단한 결과, 단기호우사상에 대해 댐 건설 후 회룡포 구간의 사주퇴적능력은 -0.05m로 감소되어 그 영향은 비교적 미미할 것으로 분석 되었고, 대부분의 변화는 주수로에서 -0.5~0.5m로 변화될 것으로 예측되었다. 하상 변동의 양상은 실측한 10년간의 종단변화와 같은 경향성을 보이며, 횡단번호 No.15 이후로 0.5m이상 퇴적이 이루어 질 것으로 예측되었다. 본 연구결과는 댐건설로 인한 하천 하상변화에 대한 특성을 파악하고 하천공사 나 수리구조물 설계의 기초자료로 활용될 수 있을 것으로 판단되며, 향후 지속적인 모니터링 및 조사를 통하여 하상변동양상을 관측하고 분석할 필요가 있을 것으로 판단된다.

• Journal of Korea Water Resources Association
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• v.42 no.9
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• pp.691-702
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• 2009

This study makes a systematic approach to Hack's law considering self-affinity and self-similarity of natural basins as well as the elongation of corresponding catchment-plan forms. Catchment-plan forms extracted from DEM appear to be the population come from the interactions of 2 hypotheses on Hack's law. It is judged that the elongation measures based on inertia moments are more intuitive than the ones based on main channel lengths. The exponent of Hack's law, h, seems to be similar to the result of Gray's study (1961). However Hurst exponent, H, being 0.96 imply that catchment-plan forms considered in this study have isotropic increasing properties with scale. From this point of view it is inferred that the shapes of the basins in this study would be more affected from self-similarity of main channel lengths than self-affinity of catchment-plan forms.

• Journal of Korean Society for Geospatial Information Science
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• v.17 no.2
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• pp.123-131
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• 2009

The telecommunication technology in the 21st century has come up to the standard which could transmit various spatial information by means of on-line and the printing technology using computers has been on a par with presswork in quality. In addition, map users also would like to get various spatial information through on-line directly or indirectly. None the less, the supply system of national base map in our country has maintained the off-line sales method. It is owing to this reason that the nation's supply system has shown a high degree of inefficiency from the viewpoint of the inventory control, rapidity, and economical efficiency as compared with the on-line sales system in the developed countries. This study tried to analyze some problems of the present supply system in order to build up the foundation of the efficient map supply system and also developed the system such as On-demand maps, on-line paying and sales, inventory control, meta dat establishment, and security module, etc. This study tried to analyze some problems of the present supply system in order to build up the foundation of the efficient map supply system and also developed the system such as On-demand maps, on-line paying and sales, inventory control, meta dat establishment, and security module, etc.

• Journal of Korea Spatial Information System Society
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• v.3 no.2 s.6
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• pp.45-51
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• 2001

It is difficult for existing construction support system to provide real-world information such as geographical and spatial data, geographic information system is expected to be able to supply efficiently analyzing and supporting function as well as actual data by connecting construction support system. Furthermore, the providing method and content of GIS are varied by building various network and information service, and use of web GIS which can offer diverse and dynamic solution on network is spreaded. In this study, information management system for construction works(CIMSGIS : Construction Information Management System on Web GIS) based on web GIS is developed, which can confirm instantly state of advance and manage construction progress by real-time reporting and instruction. Also CIMSGIS can support decision making on intuitive understanding and manifold operation reporting.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.16 no.1
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• pp.111-118
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• 1998

Today Geo-Spatial Information System(GSIS) has developed and used more widely, and especially it has been more greatly asked for Land Information System as a part of GSIS. Now it has been planning and monitoring for remaking of cadastral maps by the Ministry of Government Administration and Home Affairs. But this is long term project because of the importance of itself. And then it has been needed to computerize cadastral maps for implementation of relative tasks and services. Cadastral maps have some problems; for example, map join in different scales, different administration boundary and so on. In this study General topology algorithm, Polygonization algorithm and Pseudo-topology algorithm was adapted in computerization of cadastral maps. This is called digital map. The area and shape of parcels do not change. As a result it was found that Polygonization algorithm is the best of 3 algorithm and General topology algorithm is the worst.