• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 1997년도 Proceedings International Workshop on New Video Media Technology
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• pp.55-60
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• 1997

Innovation on digital compression technology, high speed networking technology, digital broadcasting technology and distributed processing technology provides new interactive multimedia service that integrates telecommunication, broadcasting, and computer application. To meet the new trends, we focus our research direction to integrate the telecommunication services and the broadcasting services. For this purpose, we designed and implemented an interactive multimedia service platform based on the DAVIC specification. Our research results in the development of integrated interactive services and its experience will be feedback to the field trial service that will be launched from next year. In this paper, we will describe the overall architecture and system implementation results of the interactive multimedia service platform.

• 디지털산업정보학회논문지
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• 제7권2호
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• pp.161-172
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• 2011

BIog services have been developed in 5 years and also many companies have introduced many kinds of blog services as well. It is expected that the blog services will grow continuously. As the number of blog users is growing rapidly, the blogs progressively exert their influences on our society and are directly connected to the success or the failure of the portal site businesses. Thus it is necessary to investigate users' motivation to use blog and to predict their intention of continuous uses of the blog. Specifically, this study is to focus on user's motivation and user's psychological status in using the blogs. Furthermore, this study explores their causal relationships. The study tries to investigate what motivations make users to use the blogs on the regular basis. Its results show that two motivation factors, intrinsic and extrinsic motivation factors, significantly affect user's flow experiences and the flow experiences affect general use of the blogs.

• Journal of Communications and Networks
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• 제14권6호
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• pp.597-605
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• 2012

With the smart grid coming near, wide-area supervisory control and data acquisition (SCADA) becomes more and more important. However, traditional SCADA systems are not suitable for the openness and distribution requirements of smart grid. Distributed SCADA services should be openly composable and secure. Event-driven methodology makes service collaborations more real-time and flexible because of the space, time and control decoupling of event producer and consumer, which gives us an appropriate foundation. Our SCADA services are constructed and integrated based on distributed events in this paper. Unfortunately, an event-driven SCADA service does not know who consumes its events, and consumers do not know who produces the events either. In this environment, a SCADA service cannot directly control access because of anonymous and multicast interactions. In this paper, a distributed security framework is proposed to protect not only service operations but also data contents in smart grid environments. Finally, a security implementation scheme is given for SCADA services.

• ETRI Journal
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• 제32권3호
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• pp.447-456
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• 2010

Asymmetric regulation as applied to mobile termination rates refers to regulatory arrangements in which different mobile operators charge different termination rates, even though the services provided are essentially identical. The asymmetric regulation has been frequently used as a regulatory tool to support new entrants to a mobile market. This paper examines the economic effects of asymmetric regulation of mobile termination rates using a theoretical model and its simulation. The result shows that when there is no noticeable difference in brand loyalty between mobile operators with the high degree of substitutability between services provided by mobile operators, and the costs of new entrants are low, a reduction in the asymmetry of mobile access prices results in an enhancement of consumer welfare. These findings provide positive evidence for the argument that in certain situations asymmetric pricing of mobile access services may be counterproductive for consumer welfare.

• 전자통신동향분석
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• 제35권7호
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• pp.23-35
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• 2020

In this paper, we introduce ETRI AI Strategy #3, "Leading Future Technologies of Network, Media, and Content." Its first goal is "to innovate AI service technology to overcome the current limitations of AI technologies." Artificial intelligence (AI) services, such as self-driving cars and robots, are combinations of computing, network, AI algorithms, and other technologies. To develop AI services, we need to develop different types of network, media coding, and content creation technologies. Moreover, AI technologies are adopted in ICT technologies. Self-planning and self-managing networks and automatic content creation technologies using AI are being developed. This paper introduces the two directions of ETRI's ICT technology development plan for AI: ICT for AI and ICT by AI. The area of ICT for AI has only recently begun to develop. ETRI, the ICT leader, hopes to have opportunities for leadership in the second wave of AI services.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제10권2호
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• pp.7-18
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• 2004

As a society advances and develops more rapidly, there is a corresponding increase in an aging population; and therefore, transportation and transportation needs develop in a complicated way. In these times, medical rehabilitation services are required and the demands for these services will increase as time passes. Moreover, the scope of disability as defined by the government has been expanded owing to the welfare policy for the disabled. Therefore, the number of disabled who require medical services is on the rise. Along with an increase in medical rehabilitation demands, the necessity for medical rehabilitation increases as well and its role becomes more diverse on a wider spectrum. However, architectural studies on rehabilitation facilities have been insufficient and there are many problems currently in facilities operations. This study aims to present a spatial organization system along with required space that would form the basis for the most effective spatial plan and facility operation for rehabilitation hospitals.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2005년도 하계학술대회
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• pp.10-15
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• 2005

In the area of mobile communication, Location Based Services (LBS) using the location of mobile terminal to provide their services are rapidly spreading as communication network and terminal evolves. Despite the LBS are highly demanded in high speed internet area, the services are very rare due to the difficulty locating terminals. In this paper, we propose the method to locate terminals in real time and describe its implementation system. The proposed system is designed to collect the information in real time for more than a terminal connecting internet. And, the system shows high performancecollecting and generating location information through simulation tests.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.1011-1014
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• 2005

하나의 웹서비스가 이 와 연동하는 클라이언트와 1회 이상의 연동(interaction)을 필요로 할 경우, 웹서비스에서는 이를 명확히 정의하는 규약이 필요하게 되는데 이를 안무(choreography) 또는 대화(conversation)라 부르며, 총칭하여 협업 웹서비스 기술로 부른다. 최근 W3C는 웹서비스의 안무를 위한WS-CDL(Choreography Description Language)를 개발 중에 있으며, WS-CDL은 웹서비스들 간의 전체적인 안무 교환이나 메시지 교환을 정의 한다. 그러나, WS-CDL은 연결성 (connectivity)이 항상 보장되지 않는 모바일 환경이나 사용자가 이동하는 경우에 사용하기에는 비효율이 따른다. 본 논문에서는 WS-CDL개발 동향에 대 해서 살펴 보고, 가지고 있는 문제점을 보완하기 위한 방안을 제시한다.

• 정보관리연구
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• 제29권1호
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• pp.54-73
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• 1998

사회의 전반적인 정보화와 정보환경의 디지털화에 따라 전문정보센터의 역할도 변화되어야 한다. 효율적인 정보서비스를 수행하기 위해서는 기존의 정보서비스 체제나 시스템으로부터 발전적인 변화가 필요하다. 본고에서는 다양한 디지털매체와 국내외 통신망의 결합을 통해 부가가치가 높은 서비스를 창출할 수 있는 디지털정보서비스에 대한 이론적인 근거와 구체적인 실천사례를 통해 전문정보센터에서의 이용자중심 정보서비스의 효율적 구현방안을 제시하고자 한다.

• 한국IT서비스학회지
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• 제8권1호
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• pp.217-229
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• 2009

Manufacturers have recently faced such problems like limitation of product differentiation, product commoditization and increased service request level from customers, Some manufacturers have responded the problems by introducing new business model, 'product and service integrated offering', which integrate product and its services as a bundled package, This article introduces innovative 7 cases of 'product and service integrated offering', and provides case analyses : types, methods, purposes, and risks of integration, The result of analysis, 4 strategic directions for product and service integration offering, could help manufacturers to adopt and build their model successfully, Further research topics are field survey with meaningful sample size including Business-to-Consumer and finding new causal relationships among variables like characteristics of industry, product, Integration, interaction between provider and customer, A development of design methodology on how to plan and develope a sound product service integration is the second next step for the research.