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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korea Spatial Information Society
Journal Basic Information
Journal DOI :
The Korean Association of Geographic Inforamtion Studies
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Volume & Issues
Volume 23, Issue 6 - Dec 2015
Volume 23, Issue 5 - Oct 2015
Volume 23, Issue 4 - Aug 2015
Volume 23, Issue 3 - Jun 2015
Volume 23, Issue 2 - Apr 2015
Volume 23, Issue 1 - Feb 2015
Selecting the target year
A Study on Performance Analysis and Resource Re-distribution Method of the Spatial Information Open Platform Service
Jang, Han Sol ; Go, Jun Hee ; Kim, Min Soo ; Jang, In Sung ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 1~11
DOI : 10.12672/ksis.2015.23.4.001
Since the Spatial Information Open Platform service started in January 2012, the number of service users and the size of the system has increased significantly. However, we could not know the analysis result about how much the hardware resources of the Open Platform system can handle user services. Thereafter, whenever the number of service users are rapidly increased, we simply have solved the service delays using the hardware extension. So, this study presents the obvious solution to avoid the same problem in the future, by pinpointing the system performance of the Open Platform. In this study, through the performance analysis of hardware using NMON and the load test of web service using nGrinder, we intend to get an accurate performance of the Open Platform system. Then we intend to present the resource reallocation method in order to provide better performance of the system.
A Study on the Next VWorld System Architecture: New Technology Analysis for the Optimal Architecture Design
Go, Jun Hee ; Lim, Yong Hwa ; Kim, Min Soo ; Jang, In Sung ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 13~22
DOI : 10.12672/ksis.2015.23.4.013
There has been much interest in the VWorld open platform with the addition of a variety of contents or services such as 2D map, 3D terrain, 3D buildings, and thematic map since 2012. However, the VWorld system architecture was not stable for the system overload. For example, the system was stopped due to the rapidly increasing user accesses when the 3D terrain service of the North Korea and the Baekdu mountain was launched at September 2012 and September 2013, respectively. It was because the system architect has just extended the server system and the network bandwidth whenever the rapid increase of user accesses occurs or new service starts. Therefore, this study proposes a new VWorld system architecture that can reliably serve the huge volume of National Spatial Data by applying the new technologies such as CDN, visualization and clustering. Finally, it is expected that the results of this study can be used as a basis for the next VWorld system architecture being capable of a huge volume of spatial data and users.
A Study on Establishing Circulatory System for National Spatial Data Infrastructure Standardization in Korea
Seok, Sangmuk ; Lee, Jiyeong ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 23~32
DOI : 10.12672/ksis.2015.23.4.023
The basic purpose of standardization is to enhance economic feasibility and increase efficiency in the field of production, consumption, and distribution, etc. Therefore, standardization field requires circulatory system that can not only produce standards but develop and revise published standards. With such a background, to activate standards and promote systematic standardization activities, the government proposed establishing circulatory system for geospatial information standards in the National Geospatial Information Standardization Project in 2011. However, the result of analysis show that the current National Spatial Data Infrastructure(NSDI) standardization system caused a various problems including duplicate publication of standards because domestic NSDI standardization field have repeated production activities of standards without conformity assesment and certification activities. With a view to establishing circulatory standardization system, this study suggests ways of improving current domestic standardization system by reestablishing the cycle structure and circulatory system for geospatial information standards. Through this study, we could determine strategic direction for virtuous circle of geospatial information standards in macro level and it can be effectively utilized in term of planning mid-and-long-term roadmap for establishing NSDI standardization system.
A Study on Analysis and Development of Geo-Spatial Collaboration Platform
Choi, Won Wook ; Hong, Sang Ki ; Ahn, Jong Wook ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 33~46
DOI : 10.12672/ksis.2015.23.4.033
The fact that the limits of information recency, diversity, and usability are mainly caused by the supply oriented geospatial data and service development is commonly recognized. It is recently tried to overcome the limits by facilitating user experience and VGI(Volunteered Geographic Information) in several geospatial web services. This study suggests conceptual architecture and service scenario for geospatial collaborative platform prototype through review and examination of previous researches. The prototype, composed of 4 unit modules: 3D POI Creation Module, 3D POI Application Module, 3D POI/Event Management Module, 3D POI/Event Monitoring Module, provides the capability of collaboratively dealing with geospatial work. The suggested service scenario is demonstrated by developing prototype for the service modules.
Design and Implementation of Driving Pattern based Map Matching on Smart Phone
Hwang, Jae-Yun ; Choi, Se-Hyu ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 47~56
DOI : 10.12672/ksis.2015.23.4.047
Recently, there has been an increase in the number of people who use the smart-phone navigation for using various latest functions such as group driving and location sharing. But smart-phone has a limited storage space for one application, since a lot of applications with different purposes are installed in the smart-phone. For this reason, road network data with a large space of memory used for map matching in the device for navigation cannot be stored in the smart-phone for this reason map matching is impossible. Besides, smart-phone which doesn't use the external GPS device, provides inaccurate GPS information, compared to the device for navigation. This is why the smart-phone navigation is hard to provide accurate location determination. Therefore, this study aims to help map matching that is more accurate than the existing device for navigation, by reducing the capacity of road network data used in the device for navigation through format design of a new road network and conversion and using a database of driver's driving patterns. In conclusion, more accurate map matching was possible in the smart-phone by using a storage space more than 80% less than existing device at the intersection where many roads cross, the building forest that a lot of GPS errors occur, the narrow roads close to the highway. It is considered that more accurate location-based service would be available not only in the navigation but also in various applications using GPS information and map in the future Navigation.
A Design and Implementation of HTML5 Vector Map for Individual Purpose Service
Kwon, Jin-Young ; Choi, Se-Hyu ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 57~66
DOI : 10.12672/ksis.2015.23.4.057
At these day, owing to functional limitations and cost issues, used image map in web service have a problem which can not make exactly meet the user needs. This study aims to create an individual map for user suitable purposes using HTML5 technology that implement the vector map creation and its functions with services. The results of this study, the invisible problems of the tilting and rotation functions in image-based map utilizing the existing web environment were solved in HTML5 vector map. And to access the map information, by implementing the function of expressing the background and name data to selectively derive, various results were expressed in the map. Also, as a result of a comparison of performance the time required was measured at 0.88sec which comes in the range of the first loading time between 0.78sec and 7.56sec in a commercial map service, which showed the possibility of its commercialization. compared to 180GB of image maps for the production of a national map index system, the volume to produce a vector map was 2.5GB, a decrease by over 90%, which solved the issue of costs for a storage space. As a result, this study of HTML5 vector map design and implementation presented a plan for providing information suitable for the requirements of the users who use spatial information through utilizing a variety of information and expanding functions.
A Study on the Direction of Legal System Improvement for Ubiquitous City Activation
Jang, HwanYoung ; Sakong, HoSang ; Lee, JaeYong ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 67~78
DOI : 10.12672/ksis.2015.23.4.067
The ubiquitous city construction act worked as an institutional basis for the U-City projects which were actively driven in the new urban areas until 2010. However, the country's urban policies which were recently changed focusing on revitalization of the existing towns and urban regeneration led to the increased demand for revision of the u-City law with a strong character of procedural law mainly for the new urban areas. Therefore, this study, taking into account the changes of the country's urban policies and the conditions related to u-City, established the direction of revision on the u-City law as the diversification of the u-City projects, reinforcement of u-City management operation and the supports for the u-City projects, and presented the consequent action plans. This study aims to review the problems with the current u-City law and the improvement plan from the practical point of view for reflecting the country's urban policy flow and demand. It is expected that the result of this study will be able to be utilized as a basic material for supporting the continuous development and expansion of u-City by law and system.
A Study on the Implementation of Microscopic Traffic Simulation Model by Using GIS
Kim, Byeongsun ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 79~89
DOI : 10.12672/ksis.2015.23.4.079
This study aims to design and implement a traffic model that can simulate the traffic behavior on the microscopic level by using the GIS. In the design of the model, the vehicle in the simulation environment recognizes the GIS road centerline data as road network data reflecting number of lanes, speed limit and so on. In addition, the behavior model was designed by dividing functions into the environmental perception model, time headway distribution model, car following model, and lane changing model. The implemented model was applied to Jahamun-road of Jongno-gu district to verify the accuracy of the model. As a result, the simulation results on the Jahamun-road had no great error compared with the actual observation data. In the aspect of usability of model, it is judged that this model will be able to effectively contribute to analysis of amount of carbon emission by traffic, evaluation of traffic flow, plans for location of urban infrastructure and so on.
Comparison of CityGML and IndoorGML -A Use-Case Study on Indoor Spatial Information Construction at Real Sites-
Li, Ki-Joune ; Kim, Tae-Hoon ; Ryu, Hyung-Gyu ; Kang, Hae-Kyong ;
Journal of Korea Spatial Information Society, volume 23, issue 4, 2015, Pages 91~101
DOI : 10.12672/ksis.2015.23.4.091
Due to recent increase of indoor spatial information demands, several international standards have been published for indoor spatial information. OGC has also recently published two standards for indoor space; CityGML and IndoorGM. CityGML aims to provide a standard for 3D city modeling and the level of details (LoD) 4 covers the indoor space. IndoorGML focuses only on indoor space and provides several functions to complement the weakness of CityGML. It is therefore recommended to apply IndoorGML as a combination with CityGML. However since the weakness and strengths between these standards are not yet fully studied and understood, there is no well-defined guideline to apply them in a proper way. It means that we need to carry out a comparative study between them for their proper integration. For this reason, we discuss the pros and cons of these standards from two use-cases. The sites for the use-cases cover Lotte World Mall and Jongno-5 subway station, respectively. We studied these use-cases to compare CityGML and IndoorGML through the data construction of CityGML and IndoorGML for these sites. And based on several application scenarios, we also analyzed the weakness and strengths of each standard from different viewpoints. We expect that these comparative studies will be helpful to make a guideline on the application and integration between CityGML and CityGML.