• Journal of Digital Contents Society
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• v.16 no.5
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• pp.795-803
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• 2015

is a service providing story synopsis that matches user's query. This paper analyzes the user log of and shows the tendency distribution of user creation in comparison to stories in database. We also investigate the log to see possible improvements on search method. This paper proposes a concept of Story Map, in which the query-answer information is projected into spatial coordinates, and a new story search UI based on it. Using the Story Map, users are able to see entire spatial distribution of story database so that they can quickly and intuitively find a story on the map.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.25 no.1
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• pp.69-75
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• 2007

The information in physical planning field shows the socio-economic potentials of land resources while cadastral data does the physical and legal realities of the land. The two domains commonly deal with land information but have different views. Cadastre has to evolved to the multi-purpose ones which provide value-added information and support a wide spectrum of decision makers by mixing their own information with other spatial/non-spatial databases. In this context, the demands of data exchange between the two domains is growing up but this cannot be done without resolving the heterogeneity between the two information applications. Both of either discipline sees the reality within its own scope, which means each has a unique way to abstract real world phenomena to the database. The heterogeneity problem emerges when an GIS is autonomously and independently established. It causes considerable communication difficulties since heterogeneity of representations forms unique data semantics for each database. The semantic heterogeneity obviously creates an obstacle to data exchange but, at the same time, it can be a key to solve the problems too. Therefore, the study focuses on facilitating data sharing between the fields of cadastre and physical planning by resolving the semantic heterogeneity. The core job is developing a conversion mechanism of cadastral data into the information for the physical planning by DB coupling techniques.

• Economic and Environmental Geology
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• v.33 no.6
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• pp.547-556
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• 2000

The purpose of this study is to analyze shear fracture system using landslide location occurred 1998 at Janghung area. For the geological implication, foliation was surveyed and analyzed, and location of landslide, geological structure and topography were constructed into spatial database using GIS. With the constructed spatial database, shear fracture system was assessed by the relation analysis between strike and dip of the foliation and aspect and slope of the topography. We compared strike and dip of foliation and aspect and slope of topography and recognized the typical fracture pattern, strike and dip of joint, that coincided with shear fracture system. The result tells us that foliation of gneiss has geometrical relation to joint or fault that leading landslide. GIS was used to analyze vast data efficiently and the result can be used to assess the landslide susceptibility as important factor.

• Journal of information and communication convergence engineering
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• v.8 no.1
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• pp.83-88
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• 2010

Recently car navigation systems which have been widely spread and evolved. The systems use various information and techniques such as real time traffic information and augmented reality technique. In order to provide a shortest path with good flow, real-time traffic information provided by DMB is required. Augmented reality technique is also introduced to give a reality to driver by displaying real images captured by camera during driving. However, these operate well when the system receives GPS data normally. Exact information about the positions of vehicles is a base that supports the above function with realities. This paper proposes a model for acquiring exact position of vehicles. When the GPS does not operate normally, the proposed model uses various data which are generated by integrated vehicle networks.

• Journal of Korean Society for Geospatial Information Science
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• v.2 no.2 s.4
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• pp.55-65
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• 1994

In this study, we have acquired the related data of the important culture assets in this country by using close range photogrammetry and GSIS. Also, we have generated database of curtural assets and we have been developing culture assets information system to manage the data effectively. As result of this study, we could facilely operate this system by converting dulistic management to unitary. Therefore, we will act of a part of rearing for effect of many important cultural properties and the domestic information industry from this study.

• Spatial Information Research
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• v.7 no.1
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• pp.81-87
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• 1999

This paper describes the development of a data management system which manages the database on World Wide Web(WWW). It is the pa.0 of WISIF(Web-based geographic Information System for Irrigation Facilities) which is a prototype of an information management system for irrigation facilities. This system includes a web serve. and a RDBMS(Relational DataBase Management System). Netscape Enterprise Server 3.0 is used for a web server and for the latter, Oracle DBMS 7.3 for NT is used for a RDBMS. Users can cornet the database through a web browser, such as Netscape Communicator, to insert, update, delete and search data they want

• Spatial Information Research
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• v.5 no.1
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• pp.61-75
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• 1997

National Geographic Information System(NGIS) should be designed on the assumption that geographic data collected by each national organization should be integrated into geographic database systemically. To achieve this object, NGIS database would be better connected to National Very High-Speed Communication Network. In the process of research, some problems related to Korean NGIS are found. These are standardization, compatibility, extension, issue of making and opening digital map, and issue related to land information. So, it is required that pilot project apply National Geographic Information System in terms of National Very High-Speed computer network project. This project is to contain two main theme building of physical network and special management of network which is related with NGIS.

• Journal of the Korean Institute of Telematics and Electronics C
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• v.35C no.1
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• pp.25-33
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• 1998

This paepr presents an algorithm for searching an object in a fast way which contains a continuous moving object in multi-dimensional spatical databases. This algorithm improves the search method of R-tree for the case that a target object is continuously moving in a spatial database. It starts the searching from the current node instead of the root of R-tree. Thus, the algorithm will find the target object from the entries of current node or sibling nodes in the most cases. The performance analysis shows that it is more efficient than the existing algorithm for R-tree when search windows or target objects are continuously moving.

• 한국공간정보시스템학회:학술대회논문집
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• 2002.03a
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• pp.38-44
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• 2002

고객관계관리(CRM)나 마케팅과 같은 경영방식에서도 대용량의 공간 데이터베이스를 사용하는 지리정보시스템(GIS)과 같은 응용분야를 접목하고 있다. gCRM은 지리정보시스템과 고객관계관리를 결합한 것으로, 이러한 실정을 단적으로 보여 주고 있는 경영방식이다. gCRM은 대용량의 데이터베이스로부터 관심 있는 분야를 찾아내고 분석하게 된다. 그러기 위해서는 데이터마이닝이라는 기술이 필요하다. 하지만, gCRM은 일반적인 데이터베이스뿐만 아니라 공간 데이터베이스 역시 많이 사용되어진다. 이러한 공간데이터베이스로부터 관심 있는 부분이나 관계 그리고 특성 등을 찾아내기 위해서는 공간데이타마이닝이 요구된다. 본 논문에서는 gCRM 솔루션들의 기능을 중심으로 다양한 공간데이타마이닝 기법과 어떠한 관계가 있는지를 살펴봄으로써 gCRM과 공간데이타마이닝이 접목할 수 있는 부분에 대하여 정리하였다.

• Convergence Security Journal
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• v.17 no.2
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• pp.81-88
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• 2017

It is occurred frequently the reverse nearest neighbor queries to find objects where a query point can be the nearest neighbor object in recently applications like the encrypted spatial database. In a search space of the real world, however, there are many physical obstacles(e.g., rivers, lakes, highways, etc.). It is necessary the accurate measurement of distances considered the obstacles to increase the retrieval performance such as this circumstance. In this study, we present the algorithm and the measurement of distance to optimize the processing performance of reverse nearest neighbor queries in a search space with the presence of obstacles.