• The Journal of Society for e-Business Studies
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• v.14 no.4
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• pp.47-57
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• 2009

Collaborative tagging systems allow users to attach tags to diverse sharable contents in social networks. These tags provide usefulness in reusing the contents for all community members as well as their creators. Three-dimensional data composed of users, items, and tags are used in the collaborative tag-based recommendation. They are generally more voluminous and sparse than two-dimensional data composed of users and items. Therefore, there are many difficulties in applying existing collaborative filtering methods directly to them. Latent factor models, which are also successful in the area of collaborative filtering recently, discover latent features(factors) for explaining observed values and solve problems based on the features. However, establishing the models require much time and efforts. In order to apply the latent factor models to three-dimensional collaborative filtering data, we have to overcome the difficulty of establishing them. This paper proposes various methods for determining preferences of users to items via establishing an intuitive model by assuming tags used for items as latent factors to users and items respectively. They are compared using real data for concluding desirable directions.

• Journal of the Korea Convergence Society
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• v.12 no.8
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• pp.157-169
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• 2021

The purpose of this study was to investigate the satisfaction of personal media use based on individual psychological characteristics, that is, sensory propensity and media engagement effect. The results of verifying the research hypothesis are as follows. First, it was found that the 'Thrill and Adventure Seeking' factor and the 'Experience Seeking' factor had a significant influence on the use satisfaction of personal media with the characteristics of sensory orientation. It was found that the 'Disinhibition' factor had a positive effect on media engagement, and that media engagement had a positively significant effect on the satisfaction of personal media use. Finally, looking at the effect of the characteristics of sensation seeking on the satisfaction of personal media use through media engagement, the 'Thrill and Adventure Seeking' factor, the 'Experience Seeking' factor, and the 'Disinhibition' It was found to have a significant effect. It is expected that this study will be a useful basic material for establishing the direction and marketing strategy for personal media production.

• Journal of Korean Library and Information Science Society
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• v.50 no.4
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• pp.511-537
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• 2019

At a time when trend called complex cultural space has recently been taking place in public libraries, this study analyzed the importance-performance of users regarding the use factors of public library's complex cultural space. Based on the results of the analysis, this study attempted to broaden the understanding of the library users' use of this space, and to suggest directions on which factors should be improved. The results of the study were as follows: First, only 5 of 41 factors for library complex cultural space have higher satisfaction than importance, so it is necessary to promote balanced development with focus on priority improvements rather than a specific sector. Second, it is necessary to provide various programs and services in consideration of visit characteristics, such as the users of the library complex cultural space are mainly used by themselves (42%) or with their families (18.2%), also more people (50.5%) use weekday afternoons than 35%, including weekend mornings and afternoons. Third, among the five use factors related to space, the remaining items except for 'Compatibility of Computer / Equipment Use' are located in the first quadrant where both importance and satisfaction are high or in the fourth quadrant which shows higher satisfaction than importance. This is a result that shows that the library is fully performing the diversification and complexion of the space basically aimed as a complex cultural space. Fourth, it is necessary to improve the public library's complex cultural space in the future based on the analysis results of the result of analysis of the importance-satisfaction the use of factors using the IPA analysis.

• Journal of the Korea Convergence Society
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• v.13 no.4
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• pp.261-270
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• 2022

For mobile online games, this study examines how use pursuit propensity, use interest, use, service quality, and system quality, which are attributes that evaluate the use value and benefit for Chinese users, have an effect on use satisfaction. Empirical analysis results; all composing factors of four attribute had a positive effect, and the degree of effect was different according to game types in use interest and use, service quality. In terms of use pursuit, there was no difference between game types, and innovation pursuit and relationship pursuit were found to be similarly important effecting factors. In terms of use interest, there was a difference between game types. Sense of solidarity in single-player game and sense of achievement in multi-player game was found to be the most important effecting factor. In terms of service quality, there was a difference between game types. Easy of game in single-player game and function of game in multi-player game was the most important effecting factor. In terms of system quality, use convenience was found the most important effecting factor without difference between game types. Based on these results, this study suggested a strategy to enhance game development and loyalty to companies in the game industry.

• Journal of the Korea Society of Computer and Information
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• v.13 no.1
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• pp.261-272
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• 2008

The primary research objects of this study is to evaluate an importance of supplier selection factors as an index according the level of product standardization and to present the evaluation model for supplier selection. For this purpose, this study adopts the AHP method to calculate the importance of supplier selection factors. In this study 16 factors which affect on the supplier selection decision making are classified into three factors-product supply related factor, product related factor, management ability related factor. Results also indicate that standardized products are much more dealt by means of on-line compare to customized products. It means the buyer opportunities is potentially an increase in the amount of current supplier re-evaluation, which may lead to new suppliers being considered more often.

• The Korean Journal of Financial Studies
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• v.10 no.1
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• pp.145-170
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• 2004

Roll의 비판 이후 실행된 많은 국내외 연구결과 CAPM으로 설명이 되지 않는 이례 현상(Anomaly)들이 발견되고 있다. 이례 현상들은 다 요인 모형(multi-factor model)과 같은 추가 위험 요인이론, 표본차이이론, 과잉반응 및 특성이론들로 설명되고 있고 이러한 이례 현상들은 재무관리의 지속적인 관심사인 미래의 주가수익률 예측과 밀접한 관계에 있다. 본 연구에서는 이례 현상들이 주가수익률에 미치는 영향을 알아보기 써하여 Haugen and Baker(1996)의 다 요인 및 수익률 추정 방법론을 국내 증권시장에 적용한 다 요인 모형과 $\beta$, 기업규모, PBR, 과거 1년 주가 수익률에 의한 단일 요인 모형을 이용하여 개별 기업의 포트폴리오 구성기준을 결정하고 이 기준에 의거하여 월별로 편입 주식들을 재조정한 포트폴리오들의 년간 누적 실제수익률 예측력을 비교 분석한 결과 다음과 같은 결과를 얻었다. 첫째, 다 요인모형의 경우 기대수익률이 높은 주식으로 구성된 포트폴리오가 기대수익률이 낮은 주식으로 구성된 포트폴리오보다 실제 년간 수익률이 높게 나타난 반면, $\beta$, 기업규모, PBR, 과거 1년 주가 수익률의 요인에 의한 단일 모형을 적용한 포트폴리오는 이들 순위와 실제 수익률간에는 상관성이 높지 않게 나타나 다요인 모형이 주가 수익률 예측력에 있어서 단일요인 모형보다 우수한 것으로 판단된다. 단일모형 중에서는 PBR을 이용한 포트폴리오가 $\beta$ 단일모형보다 좋은 주가수익률 예측력을 보여 주었다. 둘째, 주가 수익률을 결정하는 유의성있는 요인들은 당기순이익의 증감, 당해연도의 당기순이익의 분포, 자산증가율, 매매 유동성, 매출액 변동, 거래량 추세, 기업크기(시가총액), 과거 1개월간의 주가수익률, 자기자본증가율등으로 나타났다.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.6 no.5
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• pp.337-345
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• 2016

There is an increasing attention on the sustainable energy in the world as the problem of fossil energy exhaustion and environmental issues appear. This paper addresses technologies and industries related to hydrogen energy in the literature, and develops strategy for the preparation of hydrogen energy infrastructure in Korea by extracting several factors suitable for SWOT analysis after reviewing literature. Research articles and reports about the practical application of hydrogen energy in the literature were investigated and seventy evaluation factors were extracted. Then, survey to eliminate the unsuitability problems of duplication, disproportion and objectivity was performed by scholars and experts in research institutes. Finally, sixteen factors consisting of 4 strength factors, 4 weakness factors, 5 opportunity factors and 4 threat factors were determined as the strategic factors for the infrastructure of hydrogen energy industry.

• Journal of the Korean Geographical Society
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• v.49 no.6
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• pp.884-896
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• 2014

This study aims to identify the factors that contribute to the regional innovative capacity and to analyze the effects on the regional economic development including newly-established corporation and job creation. The results are as follows. First, as a result of factor analysis, the 14 variables were grouped into 3 factors, i.e. innovative input, infrastructure, and linkage. Second, the panel models were developed using the above factor scores and economic performance variables such as the number of newly-established corporation and employees. As a result, innovative capacity factors positively contributed to the newlyestablished corporation and job creation. The innovative input was the most influential factor determining the regional economic performance, followed by linkage and infrastructure. This study suggests several policy implications for the reinforcement of innovative capacity and regional competitiveness.

• Korean Journal of Social Welfare
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• v.56 no.3
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• pp.183-205
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• 2004

This Study explored three issues in regard to the determinants of community service utilization among family caregivers of the dependent older persons. First, the differences between users and nonusers of community services were compared regarding to predisposing, enabling, need characteristics of the primary caregiver as well as the elder care recipient. Second, the variables which determined the contact of community services were examined. Third, the influence of the variables on duration of the community services among users was also examined. The data collected from 164 family caregivers were used for analyses. Findings suggest that community service users had higher education and higher emotional support, lower family income than nonusers. The level of cognitive impairment of the elder was also higher for users than nonusers. The entry into community services is more likely for elders cared for by caregivers who have higher educational attainment, lower family income and lower level of instrumental support. Once interaction terms for relationship between need factors and social support are entered, caregivers with poorer level of his/her perceived physical health and lower level of instrumental support are more likely to report use of community services. Among those reporting contact with services, more extensive use occurs for caregivers with lower emotional support and lower depression. The entry of interaction terms for relationship between need and support reveals that the combination of lower support(instrumental and emotional) and elder's greater physical impairment are associated with longer period of community service use. However, the effect of caregivers' depression followed the different pattern. For caregivers with greater depression, more supports are related with more service utilization. According to the results, implications for research and practice are discussed.

• The Journal of the Korea Contents Association
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• v.17 no.2
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• pp.521-534
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• 2017

In 2013 the Netflix, an OTT in USA, launched all at once 13 episodes of the House of Cards season. Binge-watching is the word which means watching continuously 2~6 episodes of a TV program with one sitting, the new normal of TV watching behavior, cultural and social currents all over the world. This study has analyzed the factors and motivations which affect to the persistent intention to use binge-watching. It conducted an online survey from 333 Quota sample from Korean age groups between 20th~60th with 81 questionnaires. The 5 groups were induced as motivation factors to binge-watching. The 3 groups which consisted of , , are affecting as positive to intention to use binge-watching. But the other 2 groups which are and doing as negative. The survey has shown that the persistent intention to binge-watching is affected by ages more younger, whom doing binge watching more frequently, whom estimating more higher to the conceived usefulness to use. As a theoretical model, expanded technology acceptance model was adopted and US drama House of Cards. This study could promote the next generation contents planning and S-VOD service industry.