• The Korean Publising Journal, Monthly
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• s.360
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• pp.81-81
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• 2005

• 건강소식
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• v.20 no.6 s.211
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• pp.32-33
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• 1996

• 정보보호뉴스
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• s.125
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• pp.10-11
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• 2008

• 월간산업보건
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• s.336
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• pp.60-62
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• 2016

• 보건세계
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• v.56 no.2
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• pp.50-50
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• 2009

• 월간산업보건
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• s.387
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• pp.74-75
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• 2020

• The Journal of the Korea Contents Association
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• v.20 no.5
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• pp.467-475
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• 2020

As the growth rate of IPTV VOD usage increases it is necessary to analyze VOD usage patterns systematically. This study divides VOD users into free VOD and paid VOD users, then explores how VOD usage motivations, usage patterns, and demographic factors affect the differences between two groups. The results show that social motivation, VOD satisfaction, using content after the holdback expiration, an intention to pay for ad-skip, the proportion of VOD usage, a VOD give-up experience, TV usage time, and SVOD usage time, are statistically significant. Except the VOD satisfaction factor, all of the factors analyzed are more likely to expect paid VOD users. Additionally this study found paid VOD users are more likely to use a SVOD service as an alternative one compared with free VOD users.

• Journal of the Korean Data and Information Science Society
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• v.20 no.6
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• pp.999-1007
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• 2009

This paper considers the optimal periodic preventive maintenance (PM) policy following the expiration of free-repair warranty. We assume that two periodic PM models with random maintenance quality which were proposed by Wu and Clements-Croome (2005) and Jung (2006b), respectively. Given the cost structure to the user during the cycle of the product, we derive the expressions for the expected cost rate per unit time. Also, we obtain the optimal PM number and the optimal PM period by minimizing the expected cost rate per unit time. The numerical examples are presented for illustrative purpose.

• Journal of Broadcast Engineering
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• v.26 no.5
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• pp.583-591
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• 2021

This paper explores variables that influence the prediction of OTT service experience and free(AVOD)/ paid(SVOD) service use. Research results showed that five variables such as gender, age, personal income, household composition, and e-commerce use experience had a significant impact on identifying OTT service experience and whether to use free or paid services. Also, it was found that the probability of using SVOD increases as they prefer news and drama genres and use OTT services for more time. In summary, those who are relatively young, have a high personal income, and are more adapted to digital environments such as e-commerce are more likely to use SVOD.

• The Journal of the Convergence on Culture Technology
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• v.8 no.4
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• pp.423-428
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• 2022

This paper deals with whether it is possible to find a way to solve the conflict between villagers and tourists by newly defining the difference between free village and public tourist destinations in Korea, reinforce the insufficient guidance and notification services with realistic media, and implement additional killing contents and attractions. Location-based service enables real-time docent service and emergency response and smart glass thread.