• Information and Communications Magazine
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• v.23 no.8
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• pp.35-42
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• 2006

최근 광대역 서비스에 대한 소비자들의 욕구가 차츰 증가하고 있고 대상콘텐츠도 데이터와 음성 및 비디오까지 포함된 멀티미디어 서비스로 변화함에 따라, 통신서비스 제공업체들은 이에 대한 해결책을 찾는 것이 지상과제가 되었다. xDSL, 케이블 모뎀, 광랜 등 엑세스 네트워크가 잘 발달되어 있는 국내에서도 멀티미디어 서비스의 최종 수신 장치가 될 TV, PC, 오디오 기기 및 전화기 등에까지 네트워크를 연결하기 위해서는 댁내에서 또 다른 홈 네트워크를 구성해야 하는 상황이다. 이러한 홈 네트워크를 가능하게 하는 기술로는 홈 RF, 무선랜, 블루투스 등 무선 홈 네트워크 기술과 IEEE1394, 이더넷, 홈 PNA, 전력선통신과 같은 유선 홈 네트워크 기술로 나눌 수 있다. 무선 홈 네트워르 기술의 경우, 댁내에서의 반사와 감쇄 등의 영향에 의한 음영지역이 존재하는 단점이 있고 또 RF단을 구현해야 하므로 시스템 가격이 올라가게 된다. IEEE1394, 이더넷, 홈 PNA 같은 유선 홈 네트워크기술의 경우에는 댁내 통신을 위해 새로운 선을 포설해야 하는데 이를 위해서는 막대한 시설 투자비가 들어가게 된다. 이 막대한 투자비는 홈 네트워크 구축에 많은 시간이 걸리게 하는 요인이 될 뿐만 아니라, 일반 사용자들이 서비스를 이용하기에는 가격적으로 부담스럽게 된다. 전력선통신 (PLC: Power Line Communication) 은 전기를 공급하는 전력선에 흐르고 있는 상용주파수 50/60Hz의 저주파 전력신호에 고주파 신호를 활용하여 데이터를 실어 나르는 통신기술이다. 집안 곳곳 이미 포설되어 있는 전력선이 이미 하나의 네트워크를 구성하고 있기 때문에 번거롭고 값비싼 추가 배선작업 없이 바로 네트워킹이 가능하다. 이와 같은 이유로 고속 PLC는 설치 용이성, 접근성, 속도 및 비용부분 등에서 경쟁기술에 비하여 여러 장점을 가지고 있다. 젤라인은 국내 전력선통신 표준을 만족하는 24Mbps 고속 전력선통신 칩을 기반으로 다양한 전력선 채널환경 하에서 최적의 통신을 보장하는 전력선 통신시스템을 제공하고 있으며, 이를 소개하고자 한다.

• The Journal of the Korea institute of electronic communication sciences
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• v.5 no.1
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• pp.102-108
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• 2010

With gradual growth of digital image contents industry connected with computer graphics technology, users require high-quality animations similar to real world and want to observe the type of fishes or their swimming types through cyber aquarium and fish encyclopedia. This study designed and developed fish growth process system to express natural and dynamic movement of fish, which is the critical in expressing submarine environment. This system proposes new mopping technique not presented in existing mopping studies as well as simulation using algorithm that newly supplemented existing fish swimming types. In addition, disease infection status is realistically expressed, which may occur depending on environmental factors during their growth process. With comprehensive fish studies, different from existing fish studies, this study examines the overall features of fish with realistic simulation.

• The Journal of Society for e-Business Studies
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• v.21 no.4
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• pp.95-117
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• 2016

Entering aging society and increasing individual's interests on wellbeing lead to increasing demands of healthcare service and various healthcare related applications are providedon app market or Internet. These healthcare services could enhance user's health status if the users continuously use the service. In order to enhance effectiveness of a healthcare service, the service user should comply with recommendations or directions are provided by the service. However, previous studies of healthcare service are not considered effects of compliance intention on continuous usage. Hence, we tested how user's compliance intention effect on continuous usage intention of healthcare service based on theories of information system and medical information. Moreover, we found that compliance intention of users for healthcare service is an important factor on sustainability of healthcare service. Additionally, we investigated what factors are related with user's compliance intention.

• Journal of Digital Convergence
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• v.18 no.5
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• pp.473-484
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• 2020

The purpose of the research is to propose ways to activate package tours through active promotion by verifying the motives and constraints pursued by customers of package tours, highlighting the advantages of content development and package tours that are revived in their needs. This study verified empirical analysis using SPSS 25.0 for 481 adults aged 19 or older who experienced package tours. The results of the research analysis are as follows. First, the daily escape, external activities, and service appeal of the tourist motivation were all verified with a positive impact on attitude. Second, it was found that the inherent constraints of tourism constraints had a negative effect on the relationship with attitudes, but the structural constraints were not significantly affected. Third, attitudes have shown to have a positive effect on satisfaction. Based on these results, I have described what factors tourists feel important when participating in package tour products, and hope that The factors will be useful in exploring the development of customized products required by tourists. It will need to be expanded to realistic comparative studies needed to revitalize package tours in the future.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.48 no.10
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• pp.20-24
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• 2011

As various 3D contents have been developed recently, number of users who use 3D glasses in the cinema or their house has increased. However, since a stereoscopic image causes visual fatigue, developers also advise children and pregnant against watching it for hours. In this paper, we proposed measurement of level of visual fatigue degree by analyzing histogram obtained from a disparity-map. We used binocular disparity approach which is a fundamental factor occurred by a stereoscopic image. This research can be used as an user discomfort improvement method by referring to a stereoscopic image producing and compensation. To obtain a disparity-map, our proposed method used a census algorithm which is suitable for real-time processing.

• Journal of The Korean Association of Information Education
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• v.13 no.3
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• pp.393-400
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• 2009

As one of leading media converging broadcasting and telecommunications, IPTV is required to pursuit the idea of public interest from broadcasting industry and universal service from telecommunications industry as well as satisfying industrial effect. It needs to consider both industrial effect and public benefit when vitalizing IPTV services. The project of providing IPTV-based interactive public services is expected to enhance accessibility of public services, present shape of new public service in broadcasting-telecommunication convergence environment, resolve the shortage in contents supply which is one of most important problems in IPTV services. In this research understanding the overall response such as service usage status, satisfying/dissatisfying factor, trend of preference of the customer using IPTV-based interactive public services, we analyze what the public service mean in IPTV environment and public identity of IPTV. And we have investigate effective developing method and ripple effect of IPTV-based public services on broadcasting and telecommunications converged ecosystems.

• Journal of KIISE:Computer Systems and Theory
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• v.34 no.3
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• pp.124-131
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• 2007

Research field on crowd animation can be classified into two major categories. One is to offer realism of the crowd motion and the other is to improve speed of the animation. For the last decade, a lot of research on realism and behavior of crowd have been presented. But lately, research on improving speed seems like more interesting. Therefore, in this paper, we conducted an experiment to analyze what is the main bottleneck of crowd animation. As the result, we find out one of the most important bottleneck is the number of joints transformed in each animation frame. In order to resolve this problem we propose a novel level-of-detail technique 'motion level-of-detail', which is a joint-reduction technique operated in the pre-processing time. We used a non-linear optimization, SQP (sequential quadric programming), to generate the low detailed motions.

• Journal of the Korean Society for information Management
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• v.25 no.3
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• pp.179-207
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• 2008

This study aims to propose a set of guidelines for the development of university librarians' continuing education program. It examines previous academic literature regarding such programs both in Korea and overseas, as well as the present condition and demands of Korean university librarians. A survey was conducted by systematically sampling 33.3% of all university librarians nationwide and asking about their experiences with the existing continuing education program(e. g., general satisfaction level, program topics, program administration, evaluation methods, outreach methods, reasons for participation). The survey results show that the participants: (1) had a relatively low satisfaction level; (2) strongly demand programs focusing on library promotion, management of information resources and knowledge content, and skills to adiust to the rapidly changing library environment; (3) prefer a week-long course focused on specialized subjects and skill development; and (4) cite more specialized education content, the establishment of a support system, and diversified education levels as factors that would further their interest in the continuing education program.

• Journal of the Korean Society for information Management
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• v.29 no.1
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• pp.351-374
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• 2012

Recently, the website of university archives is becoming greatly significant to users who retrieve and utilize university archives and records. This study aims to meta-analyze university archives in Korea in terms of usefulness, usability, information quality, and web accessibility in order to improve the functionality and usefulness of university archives websites. The result of the study suggests that university archives should increase the number of the digital records and to develop communication chanels, such as blog, chatting room, digital reference services for activating use of university records. Secondly, university archives make efforts to develop systematic collecting and managing procedures and to build relevant digital collections. Thirdly, the websites of university archives develops more user-friendly interfaces and web design to improve user satisfaction. Finally, the websties of university archives should follow the standards on web accessibility.

• Cartoon and Animation Studies
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• s.45
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• pp.127-146
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• 2016

The most presentative case would be functional evolution of webtoon as a contents business model, which has taken a initiating role in both innovated strategic experiments and outcomes. Most of all, There are the launch of PPS(Page Profit Sharing) sevice in NAVER webtoon, the paid service model implementation in KAKAOpage and potential business as an exclusive application in Lezhin entertainment This study to analyze these phenomina and results can figure out how the business model in the webtoon platform is developed in various fields diversely and what makes this model evolved and extended. Especially, the diversification of the webtoon platform has been received attention since it pursued the grouped spin off through horizontal convergence and transformational expansion among similar platforms, and also this shows that which factors enhance these phenomina to be controled and expanded. On the basis of the result of this study, we try to find the way to connect business vision of the domestic webtoon platform with affiliated business. Furthermore, it proposes the interrelationship between this and the business strategy for overseas in the globalized platform.