• Journal of KIISE:Databases
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• v.35 no.3
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• pp.272-285
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• 2008

In this paper, we concentrate on data allocation methods for multiple broadcast channels. When the server broadcasts data, the important issue is to let mobile clients access requested data rapidly. Previous works first sorted data by their access probabilities and allocate the sorted data to the multiple channels by partitioning them into multiple channels. However, they do not reflect the difference of access probabilities among data allocated in the same channel. This paper proposes ZGMD allocation method. ZGMD allocates data item on multiple channels so that the difference of access probability in the same channel is maximized. ZGMD allocates sorted data to each channels and applies Broadcast Disk in each channel. ZGMD requires a proper indexing scheme for the performance improvement. This is because in ZGMD method each channel got allocated both hot and cold data. As a result, the sequential search heuristic does not allow the mobile client to access hot data items quickly. The proposed index scheme is based on using dedicated index channels in order to search the data channel where the requested data is. We show that our method achieve the near-optimal performance in terms of the average access time and significantly outperforms the existing methods.

• Journal of Distribution Science
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• v.9 no.2
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• pp.31-36
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• 2011

I conducted empirical analyses of what happens when an offline channel expands to an online channel and whether the pre-existing offline channel's competitive assets (e.g. brand reputation and level of service satisfaction) can be linked to online channel preference. I found that an offline channel's brand reputation and level of service satisfaction can have a direct influence on offline channel preference and a second-hand influence on online channel preference. Thus, if the competitiveness of the online channel is strong enough and its customers have a higher preference for the offline channel, they will be committed and loyal to the company. The resultant enhanced competitiveness of the offline channel will present opportunities for both present and future success. The main results are the following. First, the management of the distribution channel service quality is more important than that of the brand reputation. Customers' experiences of service and subjective evaluations are not important only as the leading factors in the long-term brand reputation management but also as influential factors in channel preference. SoThus, given that the service quality of the pre-existing channel is not the customers' main concern, a strategy of improving the level of service satisfaction aimed at present customers is more valuable than a wide brand positioning strategy aimed at general and new customers. Second, when an offline channel company establishes an internet shopping mall on an online channel, it is highly likely that the preference and subjective evaluation of the present customers will influence the online channel. This applies not only to the special case of an expansion from an offline intermediary channel to an online one, but also to an online channel acting as an expansion of the business model of a conventional manufacturing or service company: both cases are vertical integrations of marketing channels in an expansion of the distribution channel. My theory applies to a wide range of contexts. Third and finally, any business strategy can grasp the meaning of 'channel expansion. Fundamentally, it is an expansion of the sales activity channel and marketing activity. However, it is also a way of enhancing marketing and sales competitiveness through an expansion to an online or offline channel. The expansion of an offline company to an online channel could be seen not as improvement but as an innovation of the business process by which two goals are achieved with one technique. The former is expected to increase the sales of the offline company, and the latter is also expected to increase sales while also contributing to cost reduction.

• Journal of the Korea Society of Computer and Information
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• v.14 no.10
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• pp.149-157
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• 2009

This study aims to empirically examine the factors influencing mobile channel loyalty. This study has been reviewed various theoretical research relating to mobile channel loyalty and transaction cost theory. The model was tested Structural Equation Modeling(SEM) using AMOS 7.0 analysis on the sample collected from 240 respondents. The result of hypothesis testing is as follows. First, asset specificity, uncertainty and transaction frequency were influenced by chanel satisfaction. Second, asset specificity was influenced negatively by chanel preference. Third, chanel satisfaction was influenced positively by chanel preference. Finally, chanel satisfaction and chanel preference were influenced positively by chanel loyalty.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07b
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• pp.730-732
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• 2005

디지털 방송이 본격적으로 시작되고 각 가정에 디지털 TV의 보급이 많이 이루어짐에 따라 사용자들이 시청할 수 있는 채널 및 프로그램의 수는 기존의 공중파 환경과 비교하여 폭발적으로 증가하였다. 채널의 수가 수백 개로 늘어나기 때문에 사용자가 자신이 원하는 프로그램을 찾기 위해서는 리모콘을 누르거나 방송 편성표를 검색하는 것과 같은 많은 시간과 노력을 필요하다. 따라서 이러한 문제점을 해결하기 위해서는 사용자의 프로파일과 선호도 정보를 분석하여 사용자의 취향에 적합한 프로그램을 추천해줄 수 있는 방법이 필요하다. 본 논문에서는 수백 개의 채널에서 방송되는 프로그램 및 사용자의 선호도 정보를 분석하여 사용자가 원하는 프로그램을 추천해주고 시청 히스토리를 분석하여 사용자 모델을 동적으로 갱신하는 기법을 제안한다.

• Korean journal of communication and information
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• v.58
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• pp.154-177
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• 2012

Considering the growing importance of TV favorite channel setting function due to the rapid increase of number of TV channels, this study tried to find factors which affect the attitude toward and intention to use the favorite channel setting function. As related theories, this study used theory of diffusion of innovation, channel repertoire, channel changing behaviors, and social influences and suggested research hypotheses and questions based on the theories. After collecting data through online survey of 192 general audience, this study empirically analyzed the data by using multiple regression analysis. The result showed that innate innovativeness, relative advantage and social critical mass affected attitude toward using the favorite channel setting function and that compatibility, visibility, social critical mass influenced intention to use the function.

• Journal of the Korea Society of Computer and Information
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• v.16 no.2
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• pp.207-215
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• 2011

Due to the increasing availability and popularity of digital television (DTV), the numbers of TV channels and programs that can be selected by consumers are also increasing rapidly. Therefore, searching for interesting channels and program via remote controls or channel guide maps can be frustrating and slow. In this paper, in order to better satisfy consumers, we propose a dynamic channel surfing scheme that reduces the channel seek distance in DTV. The proposed scheme dynamically rearranges the channel sequences according to the channel currently being watched to reduce the channel seek distance. The results of a simulation experiment demonstrate that the proposed dynamic channel surfing scheme reduces the channel seek distance for DTV channel navigation when up-down channel selection interfaces are used.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.05a
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• pp.423-425
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• 2015

최근 대형 마트 및 백화점에서는 옴니채널 형식의 유통전략이 급부상하고 있으나, 소상공인 및 전통시장은 고비용의 옴니채널 형식을 도입하기가 어렵다. 이를 해결하고자 소자본으로 구축 가능한 니즈 분석을 활용한 모바일 플랫폼이 고안되었으나, 단순히 사용자의 행동 및 후기를 활용한 니즈분석은 개인만의 선호도 분석으로서 타인의 선호도를 알 수 없다는 문제점이 있다. 본 논문에서는 앞서 언급한 내 외부 소셜 네트워크 서비스를 활용하여 타인의 상품 선호도 또한 분석하고 결합하여 보다 효과적으로 상품 선호도 분석을 하였으며 사용자 지정 선호도 분석을 지원한다.

• Journal of Broadcast Engineering
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• v.21 no.2
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• pp.210-218
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• 2016

In this study VOD usage patterns(VOD use and paid amount) of IPTV users were investigated reflecting the level of media use characteristics such as TV viewing time, star preference, and genre preference. Also the impact of media using characteristics and the evaluation of guide channel on the intention to use VOD was analyzed. The web survey was conducted against the respondents who have used VOD and guide channel. The results are as follows. Among the media usage characteristics, star preference has the impact on the VOD use, while genre preference has relation to the willingness to pay for VOD. Secondly, the intention to view the guide channel, entertainment of the channel, and the users' genre preference have significant impacts on the intention to use VOD. Therefore, it is necessary to raise the viewing rate of guide channel by providing the customized promotion strategy and diverse events based on the analysis of VOD usage.

• Proceedings of the Korea Contents Association Conference
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• 2012.05a
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• pp.157-158
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• 2012

본 연구는 온라인 채널상에서 소비자의 구매의사결정이 어떠한 영향을 미치고 있는지 알아보기 위한 실증적인 연구조사이다. 온라인 채널의 가치를 담고 있는 채널자산에는 소비자의 이성적요인과 감성적요인이 영향을 미치고 있다. 이러한 요인들이 소비자의 브랜드 선호도와 브랜드이미지에 영향을 주어 궁극적으로 구매의도를 형성한다는 것을 규명하고자 하였다. 따라서 감성적인 요인이 온라인에 대한 애호도와 선호도에 유의적인 영향을 주는 것으로 밝혀졌고 온라인 이용자가 정보 수집을 추구하면서 단순히 정보탐색자체를 즐기기도 한다는 기존 연구결과를 재확인하였다. 또한 소비자의 감성적 요인이 브랜드 선호도와 이미지에 유의한 결과를 갖게 되어 인지-태도의 순도 가능하다는 것이 규명되었다.

• Cartoon and Animation Studies
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• s.13
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• pp.211-221
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• 2008

Animation programs are regarded as bad genre in the aspect of advertisement revenues due to relative low viewing ratios. But programming of animation can be considered positively in the aspect of channel loyalty and preference. This study is based on the assumption that if the scheduling of animation genres could bring out the improvement of channel image of broadcasting stations in the long term, the terrestrial broadcasters could reconsider the increase of animation programs. The research questions of this study are as follows: 1. What is the relationship between the programming ratio of animation genres and the concentration of viewing patterns? 2. How has the increase of animation programming influenced the channel image of broadcasters? 3. Why is it necessary to increase of reinforce the programming of animation genre in the new media platforms? The teenagers aged from 8 to 14 can generally make a decision which program they want to watch. Likewise, the adult viewers aged from 30 to 40 can make a selection which commodity they want to buy. The results of this study indicate that the adult viewers have showed the strong preference for the same broadcasting stations which they have been exposed to in their teenages. This result implies that in the new media environment, animation genre can lead the viewers' loyally and preference for the broadcasting channel for a long period.