• Annual Conference of KIPS
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• 2007.11a
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• pp.479-481
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• 2007

본 논문에서는 데스크탑 사용자가 손쉽게 웹 애플리케이션을 설치하고 실행하기 위한 원클릭 배포방식을 소개한다. 먼저 기존 웹 애플리케이션의 배포 방식의 현황 및 문제점을 제시하고, 이를 해결하기 위한 웹 애플리케이션의 패킹 및 실행 메커니즘과 관련 구성 요소를 소개한 뒤, 구현 결과와 향후 과제를 제시한다.

• 한국IT서비스학회:학술대회논문집
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• 2006.05a
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• pp.186-189
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• 2006

CAMUS 시스템은 물리적으로 탑재되는 위치에 따라서 CAMUS 메인 서버와 Service Agent Manager 로 구분된다. Service Agent Manager 는 한 환경내에 존재하는 센서와 장치들 (Service Agent)을 관리 및 제어하는 프로그램이다. Service Agent Manager 는 여러 다양한 환경에 설치되어 환경 내에 위치한 다양한 센서로부터 정보를 얻고 그 정보를 CAMUS 메인 서버에 전달하는 한편 CAMUS 메인 서버로부터 실행명령을 받아 환경 내 장치를 제어하는 역활을 한다. 이러한 Service Agent Manager 는 임의의 공간 내에 설치될 수 있으며 로봇단말이나 개인 휴대단말 등에도 설치될 수 있다.

• Proceedings of the Safety Management and Science Conference
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• 2008.11a
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• pp.115-129
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• 2008

The importance of perceived quality and brand loyalty is increasing recently both domestic and foreign. So many papers perform research on service quality and brand loyalty. Today, there is the rapid growth in the Korean mobile telecommunications service market. But mobile telecommunications service companies don't pay full attention to customers' attitude and brand loyalty. This paper shows why Korean mobile telecommunications service companies have to focus on Brand Loyalty. This paper investigates the relationship among perceived quality, attitude and brand loyalty in the area of mobile telecommunications service.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.1B
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• pp.34-46
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• 2009

The remarkable growth of Korean telecommunication market has based on the introduction of competition as well as mobile technology like CDMA. It was well Down that such a conspicuous growth has been towed by mobile service rather than fixed telephone service. In telecommunications service the number of subscribers to mobile was over 40 millions in 2006 and also, while the traffic amount of fixed telephone has been more decreased, that of mobile, which already outnumbers the fixed, has been constantly increased and will be much more in future. It will accelerate the substitution of access and call demand of fixed service by mobile. This change of technology and demand does affect directly the market performance of telecommunications. And regulation has also an effect on market structure, which finally affects on market performance. In this paper we suppose the fixed and mobile telecommunications services are in a same industry. After reviewing the relations among the demand, cost, charge structure and revenue structure in the one fixed and mobile telecommunications market using the framework of an industrial structure analysis, we discuss the current issues of telecommunications regulation and implications for the future regulation.

• ETRI Journal
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• v.33 no.1
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• pp.128-131
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• 2011

This letter describes a file format designed for interactive music service where users are able to recompose music based on their own preferences. The proposed design utilizes the flexible features of the ISO base media file format (ISO/IEC 14496-12, ISO-BMFF). The techniques offered in the proposed file format enable compact storage and efficient preset management, allowing users to recompose music with ease and convenience. Additionally, an implementation scheme for an interactive music player is shown along with its results.

• Journal of Digital Convergence
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• v.9 no.6
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• pp.39-55
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• 2011

Since telecommunications reforms began around world in the 1980s, many scholars have attempted to uncover its effects on the telecommunications sector. Nevertheless, research focusing largely on the impact of privatization on universal service has been relatively less frequent than other research on telecommunications reform such as the effect of competition on efficiency, investment, and universal service, and the impact of privatization on efficiency. From this perspective, this study attempted to explain the impact of the privatization of a state-owned telecommunications enterprise on universal service in Korea. This work may contribute to providing policy-makers and scholars in telecommunications with some useful policy suggestions by concretely illustrating how the privatization of Korea Telecom has influenced universal service policy formulation and the universal service system in Korea.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.6 no.4
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• pp.1106-1127
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• 2012

Service oriented architecture (SOA) lends itself to model the application components to coarse-grained services in such a way that the composition of different services could be feasible. Service composition fulfills numerous service requirements by constructing composite applications with various services. As it is the case in many real-world applications, different users have diverse QoS demands issuing for composite applications. In this paper, we present a service composition framework for a typical service overlay network (SON) considering both multiple QoS constraints and load balancing factors. Moreover, a service selection algorithm based on niching technique and particle swarm optimization (PSO) is proposed for the service composition problem. It supports optimization problems with multiple constraints and objective functions, whether linear or nonlinear. Simulation results show that the proposed algorithm results in an acceptable level of efficiency regarding the service composition objective under different circumstances.

• IEIE Transactions on Smart Processing and Computing
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• v.3 no.5
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• pp.325-330
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• 2014

The era of convergence is being applied to all areas of Information and Communication Technology (ICT). The convergence of broadcasting service and communication service almost occurs on smart devices including smartphone. The smart hybrid Digital Multimedia Broadcasting (DMB) is a typical example of the convergence of broadcasting and wireless communication service. The hybrid mobile broadcasting service can support seamless video, 3D, high quality, and additional data services based on network connection between the broadcasting and wireless network. The gateway and terminal (including apps on the smartphone) take the role of the main components on the hybrid service. This paper presents the service concept, main components structure, the implementation of gateway and terminals, and field test to the urban areas for the mobile hybrid system.

• ETRI Journal
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• v.32 no.2
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• pp.255-264
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• 2010

Interference scenarios and methodologies between a terrestrial mobile service (MS) system and mobile-satellite service (MSS) system in a co-channel environment are established. Taking into account a practical deployment situation for both systems, we perform computational simulation of interference in terms of carrier-to-interference ratio (C/I) and interference-to-noise ratio (I/N) to evaluate the cofrequency interference from an MS system into an MSS system, and from an MSS system into an MS system, respectively. The methodology and results can be used as a guide when planning the deployment of MSS and MS systems with no unacceptable interference impact between them.

• Proceedings of the KSRS Conference
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• 2005.10a
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• pp.567-570
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• 2005

Recently, as mobile paradigms such as telematics or LBS (Location Based Service) have been being more diverse and mobile devices such as PDA (Personal Digital Assistance) or several telematics terminals have been being used more widely, mobile services, for example, mobile geographic information service have been being put more importance by people. In this paper, we propose to adopt S/W and data streaming mechanism as a method to improve performance of mobile geographic information service which is a representative of mobile services based on client-server architecture. The show the effectiveness of proposed methods, we design and implement S/W streaming prototype system and sample mobile geographic information service to be executed on the S/W streaming system.