• Journal of KIISE:Information Networking
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• v.34 no.5
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• pp.379-388
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• 2007

With proliferation of computer and wireless network technology, it is common to access Internet through wireless network using mobile device. Ratio of using streaming media out of many applications through Internet is increasing not only in wired network but also in wireless network. Streaming media is much bigger than other contents and requires more network bandwidth and more computing resources. However mobile devices hate relatively poor computing resource and low network bandwidth. If media streaming service is provided for mobile devices without any consideration about network bandwidth and computing power, it is hard for the client to get high qualify service. Since mobile device is supported with very limited energy from the battery, media streaming should be adjusted to varying energy state of mobile device in realtime to ensure complete playback of streaming media. In this paper, we propose DFRC to provide high qualify service to mobile client through wireless network by controlling the number of frames transmitted to client based on computing resource and energy state of mobile device.

• Journal of KIISE:Software and Applications
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• v.36 no.8
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• pp.673-682
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• 2009

Recently, photo sharing and publishing based Social Network Sites(SNSs) are increasingly attracting the attention of academic and industry researches. Unlike the face recognition environment addressed by existing works, face annotation problem under SNSs is differentiated in terms of daily updated images database, a limited number of training set and millions of users. Thus, conventional approach may not deal with these problems. In this paper, we proposed a face annotation method for sharing and publishing photographs that contain faces under a social network service using random projection, non-linear regression and representational state transfer. Our experiments on several databases show that the proposed method records an almost constant execution time with comparable accuracy of the PCA-SVM classifier.

• Journal of KIISE:Software and Applications
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• v.34 no.3
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• pp.219-225
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• 2007

UPnP AV Framework automatically integrates and manages various AV devices that are connected to network as an important component in home network. Therefore, user can access and control AV contents at any time. But, other existing home entertainment systems target multimedia service support that is based on multimedia home server system. In this paper, we propose an integrated home entertainment system (u-MUSE system) that supports remote control service. It can manage application in remote AV device or control AV contents directly in home network environment. The proposed system sufficiently performs role of control center for electronic devices in home via integrated system control and AV contents playback service.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.238-240
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• 2014

A cloud computing include a SaaS frameworks be able to use a software as a service. Despite the existing service depending on the difference of the tenant and the use, if the service provider re-establish a service, they are required resources In terms of costs and managerial. So we propose a technique for analysis software structure using the process algebra to reuse existing software. A process algebra analyze the structure of the software, express in business process or different languages and verify that it can be reused. As CCS in a process algebra is useful to convert the business process or XML, by using this, we structure a process and propose meta storage for comparison and management a structured document.

• Information and Communications Magazine
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• v.31 no.1
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• pp.5-13
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• 2013

신정부가 출범하면서 ICT는 타 산업과의 융합으로 새로운 일자리를 창출하는 창조경제 실현의 핵심수단으로 부상하고 있으며, 장기적으로는 저출산, 고령화, 산업 전반의 패러다임 변화, 생태계 중심 경쟁구조 재편 등 새로운 국가 수요의 해결 수단으로 주목 받고 있다. 본고에서는 급변하는 ICT 산업과 기술, 그리고 국가적 미래 수요에 대응하기 위해 미래창조과학부가 향후 5년간 ICT 분야 연구개발(R&D)의 방향을 제시하고 이에 기반한 새로운 기술 및 서비스 개발을 위한 추진전략을 담고 있는 "ICT R&D중장기 추진전략"의 주요 내용 및 세부 추진계획을 소개한다.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.30 no.11
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• pp.38-45
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• 2012

• Journal of Scientific & Technological Knowledge Infrastructure
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• s.9
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• pp.84-93
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• 2002

IT,BT,NT,ST 등 슈퍼컴퓨팅 자원을 요구하는 첨단 응용 연구가 전 세계적으로 활성화되면서 이 기종간의 슈퍼컴퓨팅 자원들의 공동 활용 등 첨단 응용 연구를 위한 그리드(Grid)가 출현하게 되었다. 그리드 환경에서 메타 슈퍼컴퓨팅을 구현하기 위해서는 슈퍼컴퓨팅 서비스 관련 기능들의 표준화가 매우 중요하다. 따라서 본 논문에서는 그리드와 슈퍼컴퓨팅의 관계, 그리드 기반 슈퍼컴퓨팅 표준 요구 기능들, GCF에서의 과련 표준화 동향을 조사.소개한 후 그리드 환경에서의 메타 슈퍼컴퓨팅 표준화 연구 방향을 제시하고자 한다.

• The Journal of the Korea Contents Association
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• v.21 no.10
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• pp.103-114
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• 2021

This study explores research methodologies of design and data science, and applies data science paradigm on design process. Design research methodologies would have benefits of productivity and efficiency by using data driven design methodology. From insights of former studies, a new methodology of data driven design is suggested that design problem is transformed to data set attributes, such as variables, values and data patterns. The fine dust information app design is conducted as a case study to prove this methodology.

• Journal of KIISE:Computing Practices and Letters
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• v.14 no.2
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• pp.143-157
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• 2008

Ubiquitous Web Services is able to be specified future Web Services technology for connecting with various application services in any device and network environments. The devices, in ubiquitous environment, have dynamic characteristic such as location and statuse. So, we must support methods of dynamic service discovery in ad-hoc network. There are many related works at transaction, security, QoS, semantic and Web Services composition with various fields. Recently, the studies are interested in the Ubiquitous by development of computing and network technology. However, they are an early stage. For this reason, in this paper, we propose a WSUN(Web Services on Universal Networks) for Ubiquitous Web Services. It is a SOA based framework. And this paper extracts necessity of WSUN environment from scenario. The framework is composed of US Broker(Universal Service Broker). It is designed for satisfying the conditions and supports dynamic service discovery using a US Registry (Universal Service Registry). Consequently. clients are able to discover and use Universal Service by protocol stack of the US Broker for Web Services. And it is a strong point which supports interoperability between heterogeneous networks.

• Journal of Korean Library and Information Science Society
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• v.48 no.4
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• pp.77-105
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• 2017

As our society enters an aged society, it is becoming increasingly important to resolve digital divide of older adults. However, the digital divide of the older adults are generally neglected compared to other information poor. The aim of this study is to propose considerations for library policy development in order to resolve the digital divide of the older adults. The study examined regulation of the Framework Act on National Informatization and the Ministry of Science and ICT, the Ministry of Culture, Sports and Tourism, the Ministry of Health and Welfare, the Ministry of Employment and Labor. Also it investigated guidelines and current status of services to older adults in the library. The study suggested that public libraries should be used as a basic base for the services to resolve the digital divide to older adults across the country, and the services should be organized systematically and sustainably through public libraries.