• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.07a
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• pp.117-120
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• 2012

본 논문에서는 토픽 모델링 기반 TV 프로그램 유사 시청 사용자 그룹핑 및 이를 이용한 TV 프로그램 콘텐츠 추천 알고리듬을 제안하였다. 제안 기술은 토픽 모델링 기법 중 Latent Dirichlet Allocation(LDA) 방법을 이용하여 TV프로그램 시청 기록 내에서 은닉된 유사 사용자들을 그룹핑하고 이러한 유사 시청 사용자 그룹 정보를 이용하여 사용자에게 선호 TV 프로그램 콘텐츠를 자동으로 추천하는 알고리듬이다. 제안된 자동 추천 알고리듬의 성능평가를 위해 실제 TV 시청기록 데이터를 이용하여 훈련 기간과 검증 기간을 나누어 훈련 기간 동안 제안한 알고리듬을 이용하여 사용자 개인에 대한 추천 TV 프로그램 콘텐츠 목록을 생성하여 검증 기간 동안에 실제 추천된 TV프로그램을 얼마나 시청했는지를 측정하여 추천 정확도를 검증하였다.

• Journal of Families and Better Life
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• v.21 no.2
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• pp.61-74
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• 2003

Recently, the number of consumers who buy various goods using the shopping channels on cable TV has increased. The objectives of this study are to examine the propensity of consumers to make an impulse purchase through cable TV, and to investigate the factors that influence consumers' impulse purchase. The following was found in this study: (1) The propensity of consumers to make impulse purchases on cable TV is somewhat low, Among sub-areas of impulse purchase, the propensity to make impulse purchase by suggestion is the highest. (2) Among the variables that affect consumers' impulse purchase on cable TV, the most influential variable is the psychological factor, followed by the frequency of shopping on cable TV, positive testimony from consumers who have used the product, and the amount of time spent in watching shopping channels on cable TV, in that order.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 1999.06b
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• pp.131-135
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• 1999

디지털 TV가 2000년대의 주력으로 부상할 것임에는 이론의 여지가 없다 그런데, 디지털 TV가 시장에 진입하기도 전에 대화형 TV 기능을 추가하지 않으면 안될 것으로 보인다. 디지털 TV는 여전히 단방향 방송기술에 의존하지만, 인터넷 기술 발전으로 사용자는 양방향 서비스를 요구할 것이 분명하기 때문이다. 이미 선진 각국은 양방향 TV를 개발하기 위해 다양한 노력을 경주하고 있다. 그런데, 대화형 TV의 개념이 최근 출현했기 때문에 어떤 기술이 어느 방향으로 발전할지 예측하는 것이 사실상 거의 불가능하다. 기존의 TV 기술은 최소한 30년 이상 존속될 표준에 근거해서 개발되었지만, 하루가 다르게 변화하는 인터넷 기술 표준에 바탕을 두고 제품을 개발해야 하는 특성 때문에 기술개발이 더 어렵다고 할 수 있다. 이 논문은 급변하는 방송환경에 적응할 수 있는 대화형 TV의 개념과 모델을 소개한다.

• Journal of Korean Society of Transportation
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• v.24 no.3 s.89
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• pp.103-112
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• 2006

For recent innovation of If technology and the beginning of Digital Multimedia Broadcasting (DMB) service, it has been dramatically increased to setup TV system in a car for watching TV and receiving traffic Information. Watching TV while driving would distract a driver s cognitive and visual attention as eating food, operating the radio, using a cell phone. However, there is paucity of empirical researches and it is uncertain how watching TV in driving impacts on the driver's cognition in the concrete. Therefore, we surveyed domestic drivers on the attitude watching TV while driving as well as conducted experiments through a driving simulator. Especially, we recruited two groups of participants to explore the effects of watching TV on driving behavior. The result proved that the participants who watched TV while their driving had relatively narrower the attention span than the Participants who did not watch TV. Also, those who watched TV drove with less stability and more urgent operations of the brake and accelerator than those who did not watched TV Finally, we discussed limitations and implications of the study.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.1038-1044
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• 2009

Interests for User Interface directly influencing on usability are also growing as the competition between DCATV and IPTV come to the surface, according to getting activated Interactive TV market. Therefore, this study has the purpose to understand mental models of users for Interactive TV service & Interface. The methods for this study are as follows. First, as the step considering literature study, we compared differences between DCATV and IPTV and caught up the concepts of DCATV and IPTV among some types of Interactive TV. Second, we examinated and analysed Hello TV, C&M, Broad&TV, MegaTV, myLGtv as the step of analysis for examples for Interactive TV. Third, as the step of researches observing users we analysed usability problems caused by differences of mental models between DCATV and IPTV. As a result, we could find there are some differences for mental model of users in Interface & services between DCATV and IPTV Especially, it was found that users feel confused very much regarding perception of real time broadcasting and VOD. We regards this findings can be used as basic for concept makings of Interactive TV, when TV interface is developed in the future.

• The Research Journal of the Costume Culture
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• v.7 no.6
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• pp.28-40
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• 1999

The purpose of this study was to understand the Korean teenagers\` clothing behavior through pointing out the factors that clothing behavior of teenagers that was initiated from the important reference group, TV stars. The subject of this study were 570 purposively selected students at female middle and high school students in Seoul. The results were as follows : 1. The clothing conformity to TV stars relating to demographic variables was influenced significantly by location and personal expense variable in the high school group. 2. The exhibition showed a more important role to the clothing conformity in middle school group than in high school group. 3. The clothing conformity to TV stars relating to the clothing related variables was significantly affected by self-confidence to clothing than clothing normative recognition, clothing risk recognition and degree of clothing importance regardless of groups. 4. The clothing conformity to TV stars relating to TV media variables was affected by TV media star identification variable in both groups. And in case of middle school group, interests in TV stars also had influence on the clothing conformity to TV stars. And in case of high school group, interests in TV had effect on the imitation to TV stars\` clothing. As middle school students tend to have self-identification about a particular person, TV media stars become the reference group for the adolescence to follow their clothing.

• Journal of Digital Convergence
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• v.16 no.4
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• pp.149-155
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• 2018

It has passed the era of Full High Definition Television (FHD) and ended the era of Ultra High Definition Television (UHD). We will talk about the problems caused by the difference in the number of pixels in the TVs and introduce a method to improve them. This method is a method of performing an interpolation method suitable for a given image with Weighted Essential Non-Oscillation (WENO). Thus, it is possible to reduce the distortion of the image and to ensure a better image quality. Therefore, if we use the WENO methodology, when we watch old video material on UHD TV, we can enjoy high definition of UHD TV without changing the number of pixels.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.179-184
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• 2008

Changed TV, that has multi-channel and interactive attribute, requires viewer's activity. Also, broadcasting environment and TV user interface require same things equally. But, the viewer feels uncomfortable in current situation because they recognize the TV as passive media. especially, TV interface can't overcome limitation of TV media. And such interface is provided as it is. This problem brings viewer's confusion and dissatisfaction more and more. This study raises a question about viewer's activity and satisfaction, analyzes the relation and effect between activity and satisfaction.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.49 no.8
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• pp.412-417
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• 2000

TV ghost interference can be described as passive interference by the conducting part of transmission lines. In order to survey this interference from large-sized overhead EHV (extra high voltage) transmission line, TV reception quality was measured in the vicinity of that before and after construction. Instrumentation system was composed of ghost analyzer, TV received field intensity meter, VHF/UHF antennas, TV monitor and so on. The system is installed inside the vehicle. TV field intensity and PDUR (Perceived Desired wave to Undersired wave Ratio) are measured to evaluate TV ghost by using the system and vehicle. As the results, the useful data, which can be used to evaluate the effect of TV ghost interference from transmission lines could be obtained. In this paper, it is shown that the range of TV ghost interference from transmission lines can vary according to the frequency of TV electromagnetic wave, an incidence angle to the line and the other conditiions. At present, we are making efforts to establish a PDUR guideline for transmission lines.

• Journal of Community Nutrition
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• v.5 no.4
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• pp.230-238
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• 2003

Television is a powerful and persuasive teacher. It has the potential to influence perceptions, knowledge, beliefs, and behaviors, thus nutritionists need to be aware of the nutrition-related information (NRI) in television programming and the effect this information has on viewers. The purpose of this article was to review research published in peer-reviewed journals between 1988 and 2003 that examined the NRI embedded in American television programming, which is exported to over 125 nations, and its impact on nutrition knowledge, attitudes, and/or behaviors. This review revealed that, for the past 15 years, NRI was commonly included in both television advertisements and shows. Advertised foods were mainly high in fat, sodium, and/or sugar. In addition, the NRI embedded in food advertisements tended to be misleading or inaccurate. Prime-time television shows included numerous NRI containing scenes every hour, with situation comedies having the most and real-life re-enactment shows the least. Overall, low nutrient density foods accounted for approximately 40 percent or more of all food references on prime-time television shows. In television shows, foods were mostly consumed as snacks rather than meals and children often ate more nutritious foods than adults. Although relatively few studies have examined the impact of television programming on viewers, those that do exist indicate that as children watch more television, nutrition knowledge and understanding declines while misconceptions about nutrition increase. Advertising influences children's food purchase requests and subsequent purchases by adults, with the most requested and purchased foods being high in sugar, fat, and/or salt foods. Existing research indicates that television must be acknowledged as a major source of NRI and a potentially powerful influence on dietary practices.