• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.14 no.4
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• pp.239-246
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• 2021

In the field of computer graphics and HCI, there are many studies on systems that create characters and interact naturally. Such studies have focused on the user's response to the user's behavior, and the study of the character's behavior to elicit positive emotions from the user remains a difficult problem. In this paper, we develop a prototype of an interaction system to elicit positive emotions from users according to the movement of virtual characters using artificial intelligence technology. The proposed system is divided into face recognition and motion generation of a virtual character. A depth camera is used for face recognition, and the recognized data is transferred to motion generation. We use imitation learning as a learning model. In motion generation, random actions are performed according to the first user's facial expression data, and actions that the user can elicit positive emotions are learned through continuous imitation learning.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2003.09a
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• pp.202-205
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• 2003

하천과 지하수위의 변동양상을 알아보기 위하여 갑천변에 깊이별로 관정을 설치하여 지하수위와 하천수위를 비교하여 본 결과, 하천과 지하수위는 서로 손실과 이득을 반복하면서 상호작용을 하며, 지하수위는 강수에 비하여, 하천의 수위와 보다 밀접한 상관성이 나타나는 것으로 나타났다. 대상지에서의 하천은 평상시에 이득하천이었다가 홍수위 때 순간적으로 손실하천으로 변한다. 따라서 지하수가 하천으로 지속적으로 유출되기보다는 하천과 지하수위의 변동에 치하여 그 공급원 역할이 수시로 변화하며, 제방저류지의 발달에 따른 하천의 홍수위가 어느 정도 조절되게 된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.221-224
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• 2014

IoT(Internet of Things)기술은 현재 핵심 IT 트렌드 중 하나로서 여러 분야에서 앞으로도 지속적인 발전을 통해 수많은 기기가 연결 되어 빠르게 사물인터넷 시대에 도래하게 될 것이다. 이를 위해 세계 각국에서도 활발한 연구를 진행 중에 있는 한편, 아직까지 서비스 제공을 위한 개방형 통일 표준이 확립되지는 않아 이질성의 문제가 발생하게 된다. 따라서 본 논문에서는 IoT 여러 분야 중 홈 네트워크에서 사용되는 기기가 IoT화 된다고 가정하고 먼저 구현되어야 할 기본적인 공통 명령 및 데이터타입을 SNMP 프로토콜의 SMI 기반으로 설계하여 제안한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.8
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• pp.181-189
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• 2017

This study examines whether the variables used in the Unified Theory of Acceptance and Use of Technology(performance expectancy, effort expectancy, social influence, and facilitating conditions) is applicable to continuous usage of uTradeHub at a time of expansion in the use of uTradeHub. In addition, the role of user satisfaction(mediating effect) and CEO support(interaction effect) in the relationship is identified attempting to provide basic data to help uTradeHub management strategy establishment. A total of 101 valid responses collected through questionnaires were used for empirical analysis(using SPSS 24.0), and the results are as follows. First, for the effect of the integration technology acceptance factor on user satisfaction(H1), only performance expectancy, effort expectancy, and social influence were significant, but facilitating conditions was not significant. Second, for the effect of user satisfaction on the continued use of uTradeHub(H2), there was a significant result. Third, the mediation effect on verification of user satisfaction(H3) was full where performance expectancy, effort expectancy, and social influence prompted continuous usage through user satisfaction. Fourth, for interactive effect verification of CEO support(H4), an interaction effect was shown only in the influence relationship of performance expectancy and social influence on user satisfaction.

• Journal of the Korea Society of Computer and Information
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• v.19 no.12
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• pp.287-298
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• 2014

This study is to identify how social capital is accumulated and used in SNS space, furthermore, is to examine the impact of structural and relational social capital on SNS user satisfaction, and continuous intention of information sharing. The empirical test showed that social interaction ties have a significant and positive impact on relational social capital(trust in SNS site, trust in SNS user, reciprocity). In addition, it was proven that trust in SNS site played a critical role in satisfying SNS user whereas trust in user and reciprocity was not related to SNS user satisfaction. Finally, trust in SNS site and reciprocity were proven to be key determinants of continuous information sharing intention, whereas trust in user was not related to continuous information sharing intention.

• Journal of Digital Convergence
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• v.17 no.11
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• pp.21-27
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• 2019

The study empirically analyzed the effects of content attitudes and recall on digital signage advertising appeal (information appeal vs. image appeal) and interactivity level (low vs. high). As a result, first, it was found that a moderately low level of interactivity had a positive effect on content attitudes and recall than when the level of digital signage was extremely high. In addition, at moderately low levels of interactivity, information appeals had higher content attitudes and recalls than image appeals. Second, the content of image appeal has a positive effect on attitude when the digital signage level of interactivity is high, and the image recall ad and information appeal ad have negative effects on recall. Third, the low level of interactivity of digital signage has a positive effect on the content attitude and recall of information appeal. With the advent of digital media in recent years, concerns about how to construct the level of interactivity and information content on a strategic level are increasing in practice. The results of this study are expected to suggest the direction of the strategic grounds for this.

• Journal of Korea Technology Innovation Society
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• v.17 no.4
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• pp.820-844
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• 2014

Various innovation theories, such as innovation system, innovation cluster, triple helix model, are different in their focus. However they all emphasize the interaction between innovation actors in order to generate, diffuse, and appropriate technological innovations successfully. This study analyzes how the interaction of innovation actors in Daedeok Innopolis has been changed since the introduction of innovation cluster policy like the designation of Daedeok Innopolis. Based on the analysis of survey data, Innopolis statistics, and patent joint-application data, we come to the conclusions that the Daedeok Innopolis has characteristics of multi-level governance structure, in which innovation cluster, i.e. Daedeok Innopolis, regional innovation system, and national innovation system directly overlap under the framework of innovation system. In addition, from the perspectives of triple helix model, we are able to verify that the inter-domain interactions between innovation actors, such as tri-lateral network, have been constantly increased in the Daedeok Innopolis. Based on our analysis, we identify some policy suggestions in order to strengthen the competitiveness of the Daedeok Innopolis as well as other innovation clusters in Korea. First, the network activities between innovation actors within innovation cluster should be strengthened based on the geographical accessibility. Second, private intermediate organizations should be established and their roles should be extended. Third, the entrepreneurial activities of universities within innovation cluster should be strengthened. In other words, the roles of universities within the Innopolis should be activated. Finally, the government should provide relevant policy supports to activate the interactions between innovation actors within innovation cluster.

• 한국정보교육학회:학술대회논문집
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• 2004.08a
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• pp.171-178
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• 2004

현대사회는 산업사회의 발달에 따른 물질 만능주의로 인해 이기적이고 배타적인 사회풍조가 사회 전반으로 점차 확산되면서 전통적 가치관이 경시되고 공동체 의식이 퇴색되어 가고 있는 실정이다. 그러나 인터넷의 발달은 시공간을 초월하여 가정과 학교가 가상의 공간에서 정보의 공유와 상호작용을 할 수 있게 해 줌으로써 웹을 활용한 인성교육이 가능해졌다. 본 논문에서는 이러한 웹의 특성을 활용하여 학습자가 다양한 체험활동 중심의 인성교육을 마을 단위로 실천하도록 한 후 웹 상에 구축된 인성교육 시스템을 이용하여 자신이 체득했던 체험활동 정보를 서로 공유하고 학생, 교사, 학부모가 상호 작용하게 함으로써 학습자가 지속적으로 인성 교육에 관심과 흥미를 갖고 참여할 수 있도록 하는 공동체 의식 함양을 위한 인성교육 시스템을 설계하였다. 더 나아가 웹기반 인성교육 시스템을 통해 마을을 사랑하는 마음과 공동체 의식을 함양하여 마을에 대한 긍지와 자부심을 갖고 상부상조하는 전통을 가꾸어 나가는데 도움을 주고자 한다.

• Journal of Distribution Research
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• v.10 no.2
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• pp.99-120
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• 2005

First, based on extant studies in the field, the author extracts environments, general and personalized interactions between an internet shopping mall and its customers, interactions among customers, and outcomes as 5 relevant dimensions of the service quality of an internet shopping mal She derives hypotheses on the relationships between each of the service quality dimensions and each of the three components of the relationship quality, satisfaction, trust, and commitment. She also investigates the moderating role of the relationship duration defined by the length of use in the relationships. She studies the relationships among the three relationship quality components and their effects on the future intentions of relationship maintenance, too. Through a survey on college students and adult consumers, she gathers 349 qualified questionnaires. Applying regression methods on the data, she finds out that most of the relationships between each of the service quality dimensions and each of the relationship quality dimensions are statistically significant but that the strengths of relationship are quite different dimension by dimension. The moderating effect of the relationship duration is not found except one case, the relationship between general interactions and trust. The author also finds out positive relationships between satisfaction and trust between satisfaction and commitment, and between trust and commitment. Positive relationships between trust and the future intention of relationship maintenance and between commitment and the future intention are found. But the data does not reveal any statistically significant relationship beetween satisfaction and the future intention. The author provides a few implications of the research results and future research agenda.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.109-122
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• 2018

This study investigates factors to disturb the e-Learning persistence of adult learners based on a case study of Cyber University students located in Seoul Korea. Main findings of our research show that economic burden, shortage of studying hours, digital literacy problem, perceived isolation, inefficient interaction between lecturer and student, and support of family are primary factors to influence the persistence of online education in a Cyber university. From our case study, we recommend to improve the scholarship system, and supplement the offline special lectures at weekends in order to alleviate perceived isolation. A novelty of this paper is that economic burden is highlighted to influence the persistence of adult learners.