• Journal of Korea Spatial Information System Society
• /
• v.9 no.2
• /
• pp.1-11
• /
• 2007

Recently, with the development of collecting methods of spatial data, the spatial data is produced, circulated, and used in various fields of industry and research. To manage the mass spatial data efficiently, the researches on extension of the existing commercial DBMS, such as ESRI's ArcSDE or Oracle's Oracle Spatial, is making progress actively. However, the usage of the extension of the commercial DBMS Incurs an additional expense and causes an interoperability problem due to differences in spatial data types and spatial operators. Therefore, in this paper, we developed an OpenGIS Spatial Interface for Oracle, which supports a standard interface by fellowing the "Simple Features Specification for SQL" proposed by OGC(Open Geospatial Consortium). Since the OpenGIS Spatial Interface provides all spatial data types and spatial operators proposed in "Simple Features Specification for SQL", users can manage mass spatial data of Oracle efficiently by using the standard interface without additional expense. In addition, we proved that the OpenGIS Spatial Interface is superior to the Oracle Spatial in the response time through the performance evaluation.

• Spatial Information Research
• /
• v.11 no.3
• /
• pp.213-226
• /
• 2003

With the increasing demand of processing massive geographic data, conventional GISs based on the single processor architecture appear to be problematic. Especially, performing complex GIS operations on the massive geographic data is very time consuming and even impossible. This is due to the processor speed development does not keep up with the data volume to be processed. In the field of GIS, this PC clustering is one of the emerging technology for handling massive geographic data effectively. In this study, a MPI(Message Passing Interface)-based parallel processing approach was conducted to implement the existing raster GIS operations that typically requires massive geographic data sets in order to improve the processing capabilities and performance. Specially for this research, four types of raster CIS operations that Tomlin(1990) has introduced for systematic analysis of raster GIS operation. A data decomposition method was designed and implemented for selected raster GIS operations.

• Proceedings of the Korea Society for Industrial Systems Conference
• /
• 1999.05a
• /
• pp.124-132
• /
• 1999

This paper proposes an easy method to develope user interfaces for the GIS using OLE automation. In the developing stage of user interface, the most important thing is to apply effective windows programming techniques and component software supporting techniques. This study shows an user interface developing method using the OLE automation and Visual Basic programming. For a case study, the study constructs its user interface which performs map overlaying, referencing attribute tables, graph analysis, drawing up of thematic map.

• Korean Management Science Review
• /
• v.17 no.1
• /
• pp.55-64
• /
• 2000

By managing not only geographical information but also various kinds of attribute data. GIS presents useful information for decision-makings. Most of decision-making problems using GIS can be formulated into network-optimization problems. In this study we deal with the implementation of network optimization system that extracts data from the database in GIS. solves a network optimization problem and present optimal solutions through GIS' graphical user interface. We design a nitwork optimization system and present some implementation techniques by showing a prototype of the network optimization system. Our network optimization system consists of three components : the interface module for user and GIS the basic network the program module the advanced network optimization program module. To handle large-scale networks the program module including various techniques for large sparse networks is also considered, For the implementation of the network optimization system we consider two approaches : the method using script languages supported by GIS and the method using client tools of GIS. Finally some execution results displayed by the prototype version of network optimization system are given.

• 한국공간정보시스템학회:학술대회논문집
• /
• 2000.06a
• /
• pp.221-227
• /
• 2000

국가지리 정보체계 (NGiS: National Geographic information Systems) 기본계획 하에서 국가수치기본도가 완성되었음에도 불구하고 교통부문에 GIS의 활용이 미흡하다. 그 이유는 기존 교통관련 S/W가 교통GIS DB를 받아들일 수 없기 때문이다. 이러한 시점에서 본 연구에서는 NGIS에 기초한 교통GIS DB의 이용활성화의 일환으로 교통GIS DB와 기존 교통계획S/W와 상호 Interface할 수 있는 전환 모듈을 개발하였다. 구체적으로는 기존 GIS S/W를 활용하여 교통GIS DB와 기존 교통계획 S/W인 TRANPLAN간의 연계모듈을 개발하였다. 최종적으로는 개발한 연계모듈을 서울시 강남구, 서초구와 경기도 과천시, 용인시에 걸친 일대를 시범지역으로 적용해보았다.

• Journal of Korea Society of Industrial Information Systems
• /
• v.4 no.4
• /
• pp.25-31
• /
• 1999

This paper proposes an easy method to develope user interfaces for the GIS using local server automation In the developing stage of user interface the most important thing is to apply effective windows programming techniques and component software supporting techniques. This study shows an user interface developing method using the local server automation and Visual Basic programming. For a case study, the study constructs its user interface which performs map overlaying, referencing attribute tablet, graph analysis, drawing up of thematic amp.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.2 no.1
• /
• pp.63-72
• /
• 1999

This study proposes an easy method to develope user interfaces for the GIS using OLE automation. In the developing stage of user interface, the most important thing is to make the best use of effective windows programming techniques and component software supporting techniques. Using the OLE automation and Visual Basic programming, the study constructs an user interface as case study which performs map overlaying, referencing attribute tables, graph analysis, drawing up of thematic map.

• Magazine of the Korean Society of Agricultural Engineers
• /
• v.39 no.1
• /
• pp.41-47
• /
• 1997

A geographical resource analysis support system (GRASS) was incorporated to an input and output processor for the agricultural nonpoint source pollution (AGNPS) model. The resulting interface system, GIS-AGNPS was a user-friendly, menu-driven system. GIS-AGNPS was developed to automatically process the input and output data from GIS-based data using GRASS and Motif routines. GIS-AGNPS was consisted of GISAGIN which was an input processor for the AGNPS model, GISAGOUT a output processor for the AGNPS and management submodel. The system defines an input data set for AGNPS from attributes of basic and thematic maps. It also provides with editing modes so that users can adjust and detail the values for selected input parameters, if needed. The post-processor at the system displays graphically the outputs from AGNPS, which may he used to identify areas significantly contributing nonpoint source pollution loads.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.9 no.3
• /
• pp.136-145
• /
• 2006

SWAT includes a lot of parameters related with geography, hydrological time series, land management and water pollution, etc. So, it needs many spatial, non-spatial and time series data to run SWAT. If SWAT is operated in conjunction with GIS, we can use database which includes model input data and do all the processes which covers data creation, model input and analysis of simulation results in a system. The objective of this study is to develop HyGIS-SWAT which is the interface system to couple the SWAT model and HyGIS. To achieve this object, system operation process based on HyGIS-SWAT data model is evaluated and databases are designed and established. As a result, HyGIS-SWAT prototype system is developed. HyGIS data model and HyGIS-Model operation process can be applied effectively to the development of HyGIS-SWAT. The technologies from this study can be used as base technology to develop another HyGIS application which connect HyGIS with models.

• 한국디지털정책학회:학술대회논문집
• /
• 2006.12a
• /
• pp.409-418
• /
• 2006

The purpose of this paper is to present a low cost u-City portal development idea and to propose an exclusive system architecture using 3-D interface layers. 3-D interface layers consist of reused ideas of data from existed public data produced from GIS in order to reduce Produce Processes. 3-D interface layers implement a u-City portal systems that tags from physical spaces 1 ink to mobiles from ubiquitous networks between electronic spaces and physical spaces. Primary produce of this study exhibits an exclusive architecture of a u-City portal for speedy and low cost web 3-D interface layers and GIS data, and for implementation interface of 3-D types on USN of physical spaces. Secondary produce of this study represents that a 3-D u-City portal system has visualized speedy implementation characteristics for implementation of the application systems to execute an ubiquitous concept by returning electronic space to physical space, and to present the low cost 3-D u-City portal than an existed 3-D u-city development strategy. Therefore continuous expansion and study of the 3-D interface physical space under a 상황인지(Context Awareness)ubiquitous will appear the innovated u-City portal systems.