• Proceedings of the KSRS Conference
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• 2007.10a
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• pp.430-433
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• 2007

Spatial information has recently been recognized as one of the major subjects of interest in information technology. With increasing variety and quantity of spatial data on the web, searching and maintaining these data are becoming a much focussed area of research. Interoperability is the key technology in solving the complexities of spatial data in web services. The problem of maintenance and searching of spatial data in an interoperable web service environment can be solved by establishing standardized metadata of spatial information. Then using the standardized metadata, catalog web services can be deployed for autonomous searching and binding of spatial data. This study investigates the international standard for spatial data metadata(ISO/TC211 19115) and deployed catalog web service based on this metadata. Various heterogeneous spatial data of Seoul Metropolitan region were then used for experimental implementation of catalog web service.

• Korean Journal of Remote Sensing
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• v.33 no.4
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• pp.391-400
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• 2017

Geo-based application services linked with the Open Geospatial Consortium (OGC) Web Processing Service (WPS) protocol have been regarded as an important standardized framework for of digital earth building in the web environments. The WPS protocol provides interface standards for analysis functionalities within geo-spatial processing in web-based service systems. Despite its significance, there is few performance tests of WPS applications. The main motivation in this study is to perform the comparative performance test on WPS standards. Test system, which was composed of WPS servers, WPS framework, data management module, geo-based data processing module and client-sided system, was implemented by fully open source stack. In this system, two kinds of geo-based image processing functions such as cloud detection and gradient magnitude computation were applied. The performance test of different server environments of non-WPS, synchronous WPS 1.0 and asynchronous WPS 2.0 was carried out using 100 threads and 400 threads corresponds client users on a web-based application service. As the result, at 100 threads, performance of three environments was within an adjacent range in the average response time to complete the processing of each thread. At 400 threads, the application case of WPS 2.0 showed the distinguished characteristics for higher performance in the response time than the small threads cases. It is thought that WPS 2.0 contributes to settlement of without performance problems such as time delay or thread accumulation.

• 한국디지털정책학회:학술대회논문집
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• 2003.12a
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• pp.115-129
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• 2003

The purpose of this paper is to analyze the trends of Policies and law related to web accessibility in developed countries such as U.S, U.K, Australia, Japan and EU and then propose polices to improve web accessibility in Korea. The results of the paper are as follows ; First, the awareness promotion programs, i.e seminars, campaigns, contests, etc., should be provided. Second, Korean standards and guidelines which have specific information should be made to improve web accessibility. Third, Web accessibility specialist should be trained. Finally, Law and regulation related to web accessibility should be amended as the Section 508.

• Korean Journal of Human Ecology
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• v.8 no.3
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• pp.511-524
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• 1999

This research examines 13 Korean Web sites and 15 foreign Web Sites to explore how companies present apparel products by both layout of graphics and information at the Web sites. The results show that most Web sites display tiny icons next to the item's text description. Clicking on these icons takes the customers to another web page, where the full size photograph of the item appears. The results also revealed that most web sites offer shopping bag function and payment options such as on-line and credit cards. The results indicate that Web sites are constantly evolving and following functions such as virtual dressing room, FAQ, the links, E-Cash payment, currency converter and multilingual sites are becoming standards in the near future.

• Journal of Digital Convergence
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• v.1 no.1
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• pp.129-145
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• 2003

The purpose of this paper is to analyze the trends of policies and law related to web accessibility in developed countries such as U.S, U.K, Australia, Japan and EU and then propose polices to improve web accessibility in Korea. The results of the paper are as follows : First, the awareness promotion programs, i.e seminars, campaigns, contests, etc., should be provided. Second, Korean standards and guidelines which have specific information should be made to improve web accessibility, Third, Web accessibility specialist should be trained. Finally, Law and regulation related to web accessibility should be amended as the Section 508.

• The KIPS Transactions:PartA
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• v.10A no.2
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• pp.141-148
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• 2003

Distributed applications based on standards such as CORBA, DCOM, and EJB have been widely used in distributed environments. Recently, another XML-based standard, SOAP, has been recommended for web applications. However, these standards have a shortcoming in inter-operation because they can be run on their own environments. In this paper, we design and implement a SOAP bridge for inter-operation of SOAP with other distributed object standards. Its function is to map formats between SOAP and CORBA/DCOM at run time. Through performance experiments, we show that the computing overhead is small compared to the whole transaction execution time. Therefore, distributed objects of other platforms can be reused instead of developing new objects based on SOAP. Also, using the SOAP bridge, we design and implement an XML-based bidding system on the web. Because it is based on the web standards, it has advantages such as extendibility and interoperability compared to previous proprietary electronic commerce systems.

• Journal of the Korean Association of Geographic Information Studies
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• v.19 no.3
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• pp.16-28
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• 2016

Advancing geo-spatial web technologies and their applications require compatible and interoperable heterogeneous browsers and platforms. Reduction of common or supporting components for web-based system development is also necessary. If properly understood and applied, OGC-based standards can be utilized as effective solutions for these problems. Thus, OGC standards are central to the design and development of web-based geo-spatial systems, and are particularly applicable to web services, which contain data processing modules. However, the application for OGC WPS 2.0 is at an early stage as compared with other OGC standards; thus, this study describes a test implementation of a web-based geo-spatial processing system with OGC WPS 2.0 focused on asynchronous processing functionality. While a binary thresholding algorithm was tested in this system, further experiments with other processing modules can be performed on requests for many types of processing from multiple users. The client system of the implemented product was based on open sources such as jQuery and OpenLayers, and server-side running on Spring framework also used various types of open sources such as ZOO project, and GeoServer. The results of geo-spatial image processing by this system implies further applicability and extensibility of OGC WPS 2.0 on user interfaces for practical applications.

• Korean Journal of Remote Sensing
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• v.31 no.6
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• pp.561-570
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• 2015

Till now, applications of many kinds of satellite images have been accentuated in the datacentric scientific studies, researches regarding system development and concerned technologies for them are on the un-matured stage. Especially, satellite image processing requires large volume data handling and specific analysis functionalities, so that practical necessity of base study for system development is emphasized on. In the view of information system, various edged trends such as web standards, cloud computing, or web framework are utilized owing to their application benefits proven and business needs. Considered these aspects, a testing implementation was carried out using OpenStack cloud computing environment and e-government framework. As for the processing functions, WPS in GeoServer, as one of OGC web standards, was applied to perform interoperable data processing scheme between two or more remote servers. Working with the server implemented, client-side was also developed using several open sources such as HTML 5, jQuery, and OpenLayers. If it is that completed further experiments onsite applications with actual multi-data sets and extension of on-demand functionalities with the result of this study, it will be referred as an example case model for complicated and complex system design and implementation which needs cloud computing, geo-spatial web standards and web framework.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2020-2021
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• 2003

Korea Research Institute of Standards and Science (KRISS) has developed a Web-based, remote, Internet calibration system to calibrate the Fluke 5700A/5720A calibrator using a transportable standard: specifically, multifunction transfer standard 4950. Although the uncertainty for the Internet calibration is up to two times larger than that using conventional manual calibration, it has many advantages: no need to transport the customer equipment, a reduction in the calibration service time, a directly enforced traceability to the national standards, convenience, and ease of use for the customers.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.17 no.3
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• pp.121-127
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• 2017

Recently, it has been actively Semantic Web studies for 2-dimensional data of the spatial data. 2-dimensional Semantic Web, are fused existing Geospatial Web and the Semantic Web, and integrate with the efficient cooperation of the vast non-spatial information on a variety of geospatial information and general Web, it is possible to provide it is a Web services technology of intelligent geographic information. However, in the research for multi-dimensional data processing, and in those who are missing overall, relevant standards also not been enacted. Therefore, in this paper, by applying a variety of base of the theory and technology related to this to take place the Ontology processing technology, multi-dimensional data processing is possible ontology, question, and suggested the contents of the reasoning. Also, we tried to apply what you have proposed respectively to the multi-dimensional query virtual scenario necessary.