• The Journal of the Korea Contents Association
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• v.17 no.1
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• pp.80-91
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• 2017

The purpose of paper is to confirm the role of E-WOM(Electronic Worth of Mouth) in decision making of selecting the mobile application via smart-phone or tablet pc. Particularly i wished to confirm the effects of others' positive or negative reviews in purchasing(free downloading) mobile applications. To resolve these research questions, the secondary data or previous research were collected and arranged theoretically. From literature research, i made out the proposed model to explain the relationships between the variables, executed the operational definitions and 14 Hypotheses were established, collected the survey data of 228 mobile application users. Using the empirical test analysis, previous performances to confirm the construct validity and internal consistency and PLS(Partial Least Square) modelling method was executed. The test result showed that proposed relations of variables was empirically identified, therefore, i got the conclusion as followings; First, attributes of mobile application users' reviews have the effects positively to usefulness perception and expected performance. Second, it was significantly tested Usefulness of Online Review and Expected Performance. Second, Usefulness of Online Review, Source Credibility and Expected Performance have effect positively to Intention of Review Adoption.

• Journal of Korea Multimedia Society
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• v.11 no.10
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• pp.1338-1346
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• 2008

In this paper, we propose a new P2P-based music recommendation system. In comparison with previous system in client-server environment, the proposed system shows higher quality of music recommendation through real-time sharing of music preference information between peers. A collaborative filtering is implemented as a recommendation algorithm. As a user preference profile, we use the inherit KID music genre index contained in all legitimate music file instead of music feature vectors as in previous research so that the proposed system can mitigate the performance degradation and high computational load caused by feature inaccuracy and feature extraction. The performance of the proposed system is evaluated in various ways with real 16-weeks transaction data provided by Korean music portal, 5 company and it shows comparative quality of recommendation with only small amount of computational load.

• Journal of Advanced Navigation Technology
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• v.12 no.1
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• pp.34-45
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• 2008

Broadcast encryption schemes are applied to transmit digital informations of multimedia, software, Pay-TV etc. in public network. User acquires message or session key to use key that broadcaster transmits, broadcaster need process that generation and distribution key in these process. Also, user secession new when join efficient key renewal need. In this paper, introduce about efficient key generation and distribution, key renewal method. The temporary conference environment base structure against an each mobile device wild gap. Without the transmission possible, it follows infrequent location change and with the quality where the key information change flow. Thus, in this paper, in order to apply to the embedded computing environment and the key generation and the efficient key renewal are done when the mobile device is used of the specify space it proposes.

• Journal of the East Asian Society of Dietary Life
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• v.20 no.1
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• pp.159-165
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• 2010

This study was conducted to evaluate food service satisfaction of senior citizens in three charged silver towns in Gyeonggido. Food satisfaction factors influencing the satisfaction of silver town residents' included satisfaction and word of mouth. For this study, 210 silver town residents were surveyed; however, 16 of these resident did not complete the survey. Therefore, the results of 194 survey questionnaires were analyzed. All results were conducted using the frequency, factor analysis, and regression procedure of SPSS 12.0. The determinant factors of the silver town feeding service included food service, food feeding, emotional, physical, and sensory characteristics of the senior citizens. Among these, food service, food feeding, emotional, and sensory characteristics of the respondents had a significant effect on their level of satisfaction. In addition, satisfaction of the residents was affected by word of mouth. Thus, the results of this study suggests that if the food service is well-arranged by hiring professional workers in the food service industry while considering the needs of senior citizens, feeding service can be improved. In addition, if the feeding service is focused on providing better service with more trained and educated staff members so that the clients perceive that they receive more personalized care and differentiated concern, it would be possible to enhance the relationship with customers continuously and to induce potential customers' residence in the silver town.

• Convergence Security Journal
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• v.17 no.3
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• pp.51-57
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• 2017

VOD service provides an additional revenue for broadcasting companies in addition to the existing subscription fees and advertisement-based revenue. Therefore, each broadcasting company develops its own VOD service and performs frequent improvement work. This leads to the development of new VOD services, so developers are considering ways to effectively handle the frequent development needs. In this background, we conducted an underlying research to apply the feature-oriented analysis model to the development of VOD service. The feature-oriented analysis model used in this study is the Feature-Oriented Domain Analysis (FODA) developed by SEI of Carnegie Mellon University. FODA provides a tool for specifying a feature model of a software domain, based on which developers determine the configuration of a software with customers. This study developed a feature model of the VOD service domain and devised the functionalities and testcases in an integrated manner with the feature model. Additionally, we proposed a VOD service development process utilizing the feature model, function specification, and testcases.

• Journal of the Korean Academic Society of Industrial Cluster
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• v.4 no.1
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• pp.1-13
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• 2010

The T-DMB which was developed by the convergence of digital broadcasting technology and communication technology provides us with very good quality of music like CD, and provides TV services in a super express train like the KTX whose velocity is over 300 Km per hour. The T-DMB is diffusing toward the world as a technology which is be able to provide the various convergent services of broadcasting and communication through mobile phone, PDA, dedicated terminal, and so on. A business model needed for the diffusion of the T-DMB toward the world was established and utilized to expand the T-DMB into Vietnam in the paper. In addition, this paper describes a case for the establishment of the T-DMB system in order to provide the paid services in Vietnam. It is expected that the expansion of the T-DMB into Vietnam will make a great contribution to the diffusion of the T-DMB toward the world.

• Journal of Broadcast Engineering
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• v.20 no.6
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• pp.950-962
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• 2015

This paper analyzes the effect of the number of viewers and the number of running screens in the theater, genres of the movies and holdback period on the number of purchases movie VOD contents. In this paper, we deals with the 169 movies VOD consumption data which the digital cable TV subscribers purchased during the third quarter of 2013. As a result of the research, the average number of VOD purchases per each movie is 2,540. Regression analysis proves that the number of running screens and the holdback period are statistically playing a role of significance in movie VOD purchases. But the number of viewers in the theaters is not of significance. By genres, the result is shown as in this order: SF/fantasy 8,401 > dramas 4,011 > comedies 2,011 > action 1,789 > animation 1,138 > love story/melo 1,119 > horror/thriller 770 > erotic movies 636.

• Journal of Digital Contents Society
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• v.13 no.3
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• pp.431-438
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• 2012

Recently, many mobile applications have been developed and published by increasing popularity of smart phone's market. However, a lack of research work is an issue for mobile applications' favoritism to users. In this paper, we have determined the acceptance factors on the existing smart phone applications in order to fit into mobile user's requirements. In addition, we have defined the modification of acceptance factors which are the interesting element of mobile applications, code users reviews of top 20 paid applications among android market applications, and analyse on what element can attract users' interest of mobile applications. As a result, we propose a development method of mobile applications based on the analyzed interesting elements. Our contribution is to provide useful information to mobile application companies for helping them to develop and publish successful mobile applications.

• Health Policy and Management
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• v.13 no.1
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• pp.1-22
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• 2003

The principal objective of this study was to analyze and conceptualize the socio-psychological burden in utilizing a nursing home for elderly. The subjects were five elderly from a private nursing home located in Seoul and their familial caregivers. An old male and three females were currently staying at the facility, and a female had been discharged already from there. Data were collected through depth interviews, observations and review of records at the facility For analysis, the data were classified by similar contents among significant expressions and factors in common. The subjects' motives to consider admission to the nursing home might be attributed to familial caregivers' burden, a shortage of support, environmental improvement and feeling of helplessness for the case elderly. The concept of burden is including family members' being badly off in living, their weariness, complications among family members, feeling psychological uneasiness, and hospital expenses. The identified image of nursing homes for the elderly in Korea was generally negative at the point of high cost, unreasonable requisites and limitations for admission to the facilities, inferior situations, and especially in that there were few long-term care facilities within the community boundary. From their experience of nursing homes, the interviewees have felt the sentiments of sorry for their old parents, with the thought of being an undutiful, bitterness, and empathy. Additionally, they expressed a sense of anxiety of relative deprivation against the fact that there were no long-term care facilities available for the middle class. On the basis of these, multi-dimensional needs could be identified for the elderly with chronic illnesses.

• Journal of the Institute of Electronics and Information Engineers
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• v.49 no.10
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• pp.251-256
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• 2012

Expand the market because the size of the huge funds administered by the conversion of over-the-air digital TV broadcasts in the current situation is likely to be reduced due to the influence of the media over-the-air broadcasts new paid media, digital cable TV and IPTV new mobile TV as a new growth engineis required. Broadcasting system to increase the supply and demand of the module from the ATSC-M/H DMB business existing in the domestic over-the-air broadcasters, has seen significant achievements in sleep technology with the introduction is expected. ATSC-M/H does not require a separate frequency allocation for mobile services does not interfere with the existing ATSC system simulcast, which can be performed on Android mobile handsets American-style mobile broadcast reception module to develop should. This paper is to design the software modules in the broadcasting module embedded systems that are applied on the Android platform, broadcasting from mobile handsets to see.