• Journal of the Microelectronics and Packaging Society
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• v.11 no.2 s.31
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• pp.37-41
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• 2004

Parallel combination of cold chathode fluorescent lamps (CCFL) are widely used as the light sources of LCD TV backlight. Brightness uniformity is safisfied by using one transformer per one CCFL. Instead of using one transformer per oneCCFL, one transformer is used to drive 8 CCFLs by using differential driving method. A differential driving inverter with two transformers is developed to drive 16 CCFLs of 26' backlight for LCD TV. The brightness uniformity of $88\%$ was obtained by driving 26' backlight with the developed differential driving inverter successfully.

• Journal of the Korean Society of Clothing and Textiles
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• v.33 no.9
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• pp.1483-1494
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• 2009

This study analyzes the locution of television home shopping show hosts for apparel products with a focus on the selling points and vocabulary use. A qualitative content analysis was conducted for 15 recorded home shopping shows selling women's overcoats and jackets. The results are as follows. First, 8 dimensions of selling points were revealed: Promotions, brand popularities, the experiences of shopping hosts, fashion trend information, conformity motivation and suggestion, intangible attributes, tangible attributes, and compared/leading differences. The most frequent selling point was tangible attributes. Following this were, promotions, conformity motivation and suggestion, compared/leading differences, intangible attributes, brand popularity, the experiences of the shopping hosts, and fashion trend information in order. The selling points were almost proper to decrease the perceived risks of home shopping consumers. Second, shopping hosts frequently used the clothing terms without any expatiations and used loan words (foreign language terms) instead of the direct Korean translations. In the conclusion, the development of a marketing strategy focusing on shopping host management is suggested.

• Journal of the Korean Society of Costume
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• v.64 no.7
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• pp.68-81
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• 2014

This study was conducted to demonstrate the differences in people's beauty involvement, hair attitude and cognitive in accordance with their interest in celebrities and television. Also, the difference between cognitive age and real age was studied. Research subjects were females aged 20s to 50s living in Seoul and the surrounding metropolitan areas. The SPSS 19.0 was used for data analysis. The results were as follows: First, the involvement in TV entertainers' was categorized into "TV entertainer fashion fan group," "TV entertainer follower group," and "TV program interest group." Second, The involvement of beauty was divided into skin management and expression, body management, makeup and hair attitude. The factors for hair attitude come from the following four actors: "hair creator fan group", "hair homeostasis-oriented," "hair differentiation factor," and "hair personnel-oriented group." Third, the analysis for the differences in the involvement of beauty based on the people's interest in TV appearances of entertainers was that there was a significant difference in skin care and expression, body management, makeup and hair attitude. The interest groups for the entertainers' TV appearances showed the highest in all of the above categories. Fourth, The analysis for the cognitive age for the "TV entertainer interest group" showed little difference in cognitive age, age of sensibility, age of physical appearance, behavior age, and age of interest. Fifth, The result for the difference in the actual age and cognitive age for different age groups showed that there was a little difference in average cognitive age including the age of sensibility, age of physical appearance, behavior age, and age of interest.

• The Journal of Information Systems
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• v.25 no.2
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• pp.153-171
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• 2016

Purpose This study suggests the development of forecasting model for local cable TV advertisement. In order to verify the expected effect of the suggestion, using the causal loop map of System Dynamics, the factors affecting the prospects of cable TV commercial market were divided into 5 groups. Then targeting 97 people involved in the cable TV commercial market in Busan, Ulsan, and Gyeongnam, a survey was conducted on their perception of the current status of local advertisement market and future prospect. Design/methodology/approach The analysis of the collected data shows that workers in advertising and advertisers perceive the influence of cable TV as an advertising media to be high, while clearly understanding the problems of cable TV commercial market. Based on this the effects on the prospects of cable TV commercial market were analyzed and a forecasting method called Weighted Moving Average was applied. In order to improve accuracy of the added value of Weighted Moving Average, the 5 factors were divided into qualitative factors and quantitative factors, and using Multi-attribute Decision Making method, all the factors were normalized and weighting factors were deduced. The result of simulating the prospects of cable TV commercial market using Weighted Moving Average, both qualitative and quantitative factors showed downward turn in the market prospect for the following 10 years. Findings The result reflects generally negative perception of advertisement viewers about the prospects of cable TV commercial market. Compared to the previous studies on domestic cable TV commercials that focused on policy suggestions and surveys on perception of current status, this study has its significance in that it used scientific method and simulation for verification.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.30 no.2
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• pp.213-230
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• 2020

As smart TVs have recently emerged as the center of the IoT ecosystem, their importance is increasing. If a vulnerability occurs within a smart TV, there is a possibility that it will cause financial damage, not just in terms of privacy invasion and personal information leakage due to sniffing and theft. Therefore, in this paper, to enhance the completeness of smart TV vulnerability analysis, STRIDE threat classification are used to systematically identify threats. In addition, through the manufacture of the Attack Tree and the actual vulnerability analysis, the effectiveness of the checklist was verified and security requirements were derived for the safe smart TV use environment.

• Journal of the Korean Society of Clothing and Textiles
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• v.40 no.2
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• pp.382-396
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• 2016

This study explores 1) the cultural meanings that television beauty programs deliver, 2) the ways consumers consume TV beauty programs, and 3) the differences in the meaning of television beauty programs according to personality types. An Enneagram was used to define different personality types. The Enneagram explained personalities according to underlying core energies and was useful to grasp consumer behavior. Exploratory data were collected through in-depth interviews of fifteen women in their twenties who watched television beauty programs regularly. The personality types were classified according to three core energies: head-centered, heart-centered, or body-centered. The results were: First, television beauty programs were celebrity-focused, product-focused, and consumer-focused. They were found to help consumers improve their appearance in an appearance-oriented contemporary society by sharing appearance management information. Second, consumers consumed the products from television beauty programs as well as sought a "beautifully transformed self". Third, cultural meanings moved first from a culturally-constituted world to consumer goods through television beauty programs that then moved these goods to the individual consumer through symbolic consumption behavior along with grooming rituals, evaluation practices, appreciation practices, and accounting practices. Symbolic consumption behavior differed with personality type: heartcentered consumers transferred meaning through grooming rituals and appreciation practices, head-centered consumers through evaluation practices, and body-centered consumers through accounting practices.

• Informatization Policy
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• v.22 no.2
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• pp.19-34
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• 2015

Due to rapid convergence trends in the digital pay TV market, differentiation among the competing medias decreases and substitutability is increasing. The current study aims to explain the effect of service substitutability among competing media on the size of domestic digital pay TV subscribers. For the analysis, the Lotka-Volterra model, an ecological competitive diffusion model, was used to obtain the basic model for a simulation study. A simulation was performed by adjusting independent variables of substitutability to estimate the size of subscriber for particular media. The relationship between the digital cable TV and the IPTV is identified as a predator-prey relationship and the digital cable TV is found to be superior to the IPTV. The simulation results showed that the increase of convergence and substitutability result in the decrease of the entire media market. Especially, the IPTV is estimated to face the greatest loss in this context.

• Review of Culture and Economy
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• v.21 no.3
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• pp.59-88
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• 2018

This study examines demand of the Korean TV VOD using monthly aggregate data and time series analysis models. In particular, the impact of box office attendance, number of IPTV subscribers, income and price of substitutes on TV VOD market is analyzed. Data on TV VOD download during the period 2013 January to 2018 June are used for the empirical analysis. TV VOD demand shows lower level of seasonality than box office attendance and the share of monthly top1 movie in TV VOD platform is also lower than that of box office attendance. The relationship between a movie's holdback and box office performance does not seem consistent. The empirical result of ARDL model reveals that in the short-run box office attendance, number of IPTV subscribers and price of substitutes have significant impact on TV VOD demand. The result on the long-term relation shows that income is the only determinant of TV VOD demand. The impact of box office attendance on TV VOD is not shown to be robust both for the short-term and long-term.

• Proceedings of the Korean Vacuum Society Conference
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• 2016.02a
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• pp.201.2-201.2
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• 2016

The triggered vacuum switch (TVS) is widely used as a high power switch in the field of pulsed power application. TVS can produce current of higher than 100 kA within a microsecond after being triggered. A triggering high voltage pulse generator supplies a high voltage signal to the trigger system to initiate the discharge between a trigger pin and one of main electrode. The trigger system, which consists of a tungsten trigger electrode and cylindrical ceramic insulator around it, is normally installed at the center of main cathode electrode. The discharging characteristics of the trigger system strongly depend on the geometry, electrode material, vacuum pressure and so on. In addition, we especially will focus on the developing a triggering pulse generator, which can vary not only value of voltage but also pulse duration, because its properties gives pivot influences on the TVS discharge. To verify such effects, we made a 3.3 kJ TVS set-up initially. Thus we will discuss some of prominent results from 3.3 kJ TVS system. In parallel we will show on the design of 300 kJ TVS system for the high current in the future.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.5 s.164
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• pp.705-716
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• 2007

The purpose of this study was to examine the relationship structure in TV home shopping focusing on purchasing frequency and gender. Subjects for this study were 300 customers who had purchased fashion products in TV home shopping. For date analysis, factor analysis, t-test, correlation analysis and path analysis were used. As the result, when comparing groups by the purchasing frequency, the group which had higher purchase experiences had significant relationship between trust and commitment than other group of lower purchase experiences. There were statistically significant differences in 'service', 'benefits', 'influence', 'security' variables between purchasing frequency groups. Also when comparing groups by the gender, both men and women had 'relationship maintenance intention' in CRM. However, women had the effects from 'trust' to 'commitment', while men had not effects. However, there were statistically significant differences in 'service', 'information', 'reputation', 'influence' variables between men and women. Based on these results, TV home shopping fashion marketing strategies would be suggested.