• Structural Monitoring and Maintenance
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• 제7권4호
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• pp.345-365
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• 2020

At present, many machine leaning and data mining methods are used for analyzing and predicting structural response characteristics. However, the platform that combines big data analysis methods with online and offline analysis modules has not been used in actual projects. This work is dedicated to developing a multifunctional Hadoop-Spark big data platform for bridges to monitor and evaluate the serviceability based on structural health monitoring system. It realizes rapid processing, analysis and storage of collected health monitoring data. The platform contains offline computing and online analysis modules, using Hadoop-Spark environment. Hadoop provides the overall framework and storage subsystem for big data platform, while Spark is used for online computing. Finally, the big data Hadoop-Spark platform computational performance is verified through several actual analysis tasks. Experiments show the Hadoop-Spark big data platform has good fault tolerance, scalability and online analysis performance. It can meet the daily analysis requirements of 5s/time for one bridge and 40s/time for 100 bridges.

• 한국콘텐츠학회논문지
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• 제20권11호
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• pp.145-156
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• 2020

최근 일과 삶의 균형을 중시하는 문화가 사회 전반적으로 중요해짐에 따라 삶을 풍요롭게 만들어줄 취미와 여가 활동에 관한 관심이 증가하고 있다. 이러한 현상은 온라인으로 취미를 즐기고 배울 수 있는 플랫폼의 증가로 나타나고 있다. 이 중에서도 공예 관련 콘텐츠가 급성장하고 있는데, 오프라인으로 진행되었던 교육이 온라인으로 전환됨에 따라 온라인에서는 학습 몰입도가 떨어짐을 볼 수 있었다. 따라서 본 연구에서는 현재 온·오프라인 공예 학습의 문제점을 파악하고 이를 해결할 수 있는 UI 디자인 개선 방향에 관해 모색하고자 한다. 이를 위해 온라인 학습 플랫폼과 온라인 공예 학습 플랫폼, UI 디자인에 대한 문헌조사를 했고, 이를 바탕으로 사례 조사 및 분석을 진행해 온라인 공예 학습 플랫폼의 학습 과정 3단계를 도출했다. 이후 설문조사를 실시하였고, 결과적으로 온라인 공예 학습 플랫폼은 콘텐츠 탐색 과정의 차별화, 공예 진행 단계의 시각화, 동영상 도구의 작업 편리성, 원활한 피드백 제공의 측면에서 개선점을 발견할 수 있었고, 추가적으로 능동적 학습을 위한 장치가 필요함을 도출할 수 있었다. 본 연구 결과가 향후 온라인 공예 학습 플랫폼 UI 디자인 발전의 기초자료로 활용되길 기대한다.

• 한국정보시스템학회지:정보시스템연구
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• 제31권2호
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• pp.111-136
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• 2022

Purpose The purpose of this study is to examine the effect that insecurity and autonomy of platform work have an influence on work-life balance and psychological well-being in an era of platform economy based on two characteristics of online platform work and self-determination theory. Design/methodology/approach This study suggested the structural equation model integrating two antecedents, insecurity and autonomy, work-life balance, and psychological well-being and proposed five hypotheses driven from the research model. A total of 334 valid samples were collected from platform workers by employing questionnaire including 24 question items of four constructs. Findings Three hypotheses were supported and one hypothesis was not supported at the significance level of 0.05. Insecurity of platform work has a negative influence on work-life balance at the significance level of 0.01, whereas insecurity of platform work has no a significant influence on psychological well-being. Autonomy of platform work has a positive influence on both work-life balance and psychological well-being at the significance level of 0.01. Work-life balance has a positive impact on psychological well-being at the significance level of 0.001. Insecurity have an influence on psychological well-being indirectly through mediation of work-life balance. Implications for academicians and practitioners were suggested.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권8호
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• pp.2732-2748
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• 2021

In post-COVID-19 pandemic era, students' learning effects and experience may sharply decrease when teaching is transferred from offline to online. Several tools suitable for online teaching have been developed to guarantee and promote students' learning effects. However, they cannot fully consider teacher-student interaction in online teaching. To figure out this issue, this paper proposes integrated media platform-based virtual office hours implementation for online teaching. Specifically, an integrated media platform (IMP) is first constructed. Then, virtual office hours (VOH) is implemented based on the IMP, aiming at increasing student-teacher interactions. For evaluating the effectiveness of this scheme, 140 undergraduate students using IMP are divided into one control group and three experimental groups that respectively contain text, voice and video modes. The experiment results indicate that applying VOH in the IMP can improve students' online presence and test scores. Furthermore, students' participating modes during VOH implementation can largely affect their degree of presence, which can be well classified by using principal component analysis. The implication of this work is that IMP-based VOH is an effective and sustainable tool to be continuously implemented even when the COVID-19 pandemic period ends.

• 무역학회지
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• 제47권3호
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• pp.93-110
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• 2022

This study aims to develop online convention service quality and examine the effect of online convention service quality on re-participation intention in the same convention and other types of online conventions. Based on an extensive literature review, the study chose five main factors of online convention service quality: human service, program service, platform service, platform aesthetics, and interaction. A total of 284 data were collected from online convention participants from July 26 to August 6, 2021. For the hypotheses test, multiple regression analysis was used. As a result, interaction and program service quality had positive effects on re-participation intention in the same convention, but except for platform aesthetic, all factors positively affected re-participation intention in other types of online conventions. This study also found that online service quality factors are more helpful in predicting the intention of re-participation in other types of online conventions rather than re-participation in the same convention. Based on the results, theoretical and practical implications were discussed

• 한국콘텐츠학회논문지
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• 제22권6호
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• pp.342-353
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• 2022

본 연구는 중국 현지의 학습자들을 대상으로 실시간 온라인 교육 플랫폼의 교수자 특성, 콘텐츠 특성과 플랫폼특성이 학습만족도 및 지속사용의도에 미치는 영향을 분석함으로써 실시간 온라인 교육 플랫폼 시장의 활성화에 도움이 되고자 한다. 설문조사를 통해 총 670부 설문지를 수집하여 실증분석을 실시하였다. 분석 결과, 첫째, 교수자의 특성인 매력성을 제외하고 전문성과 성실성은 학습만족도에 모두 유의미한 정의 영향관계가 있었다. 둘째, 콘텐츠 특성의 유용성, 풍부성과 적절성은 학습만족도에 모두 유의미한 정의 영향 관계가 있었다. 셋째, 플랫폼 특성인 상호작용성을 제외하고, 기술성과 편리성은 학습만족도에 모두 유의미한 정의 영향 관계를 확인하였다. 넷째, 학습만족도는 지속사용의도에 유의한 긍정적인 영향을 미쳤다. 따라서 실시간 온라인 교육 플랫폼 시장의 활성화를 위해 교수자 특성, 콘텐츠 특성과 플랫폼특성에 대하여 실제로 느끼는 효용의 가치를 높였다는 점에서 큰 의미가 있다. 본 연구는 실시간 온라인 교육 플랫폼 실무적 시사점과 향후 연구방향을 제시하였다.

• 한국벤처창업학회:학술대회논문집
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• 한국벤처창업학회 2017년도 통합학술대회
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• pp.37-47
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• 2017

The digital multi-sided platform has led the growth of industries. Accelerating this growth, generativity allowed innovation based on boundary-less modularity. Online games are a rich source of research but most of the research is dedicated in examining only the online game itself. However, there is a growing need to understand online games in an ecosystem level for a new phase of evolution is starting based on generativity. With generativity, online game users now make new graphics and quest that can be added and shared to the already existing game environment. The ecosystem is moving towards finding an amicable multi-sided distribution platform for these user generated game contents. Preliminary data suggest the possibility of actual connection between generativity and users' game engagement. Interviews and surveys will be prepared to find out the details of the possible relationship and how the ecosystem will shape accordingly.

• 한국콘텐츠학회논문지
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• 제20권4호
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• pp.181-188
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• 2020

저출산, 고령인구의 증가로 인해 많은 지역이 곧 사라지게 될 위기에 처해 있다. 이러한 위기를 극복하기 위해서는 마을공동체를 통해 지역소멸로부터 벗어날 수 있도록 노력을 기울여야만 한다. 본 연구는 마을공동체를 위한 온라인 플랫폼의 활용을 알아보기 위해 실시되었으며 문헌연구, 현황조사, 설문조사를 통해 온라인 플랫폼이 어떻게 활용되고 있는지 알아보고자 하였다. 연구결과를 요약하면 다음과 같다. 첫째, 현재 마을공동체 활성화를 위해 정부 주도하에 도시재생지원사업이 실시되고 있으며 온라인 플랫폼은 해당 지자체의 도시재생지원센터 홈페이지 위주로 활용되고 있다. 둘째, 일반인들의 온라인 플랫폼 사용 빈도를 보면 전 연령대에서 네이버를 가장 많이 사용하고 있으며 다음으로는 홈페이지를 사용하고 있다. 20대와 30대의 경우 인스타그램을 페이스북보다 많이 사용하고 있으며 40대와 50대의 경우는 페이스북을 인스타그램보다 많이 사용하고 있다. 마을공동체를 위해 온라인 플랫폼을 활용하는 데에 있어서 온라인 플랫폼의 현황과 사용 빈도를 종합적으로 고려하여 온라인 플랫폼을 활용하여야 한다.

• The Journal of Asian Finance, Economics and Business
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• 제7권4호
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• pp.173-183
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• 2020

This study has four objectives: (1) Identifying factors that affect customer satisfaction on online service quality of Tiki.vn, (2) Measuring the level of impact of the factors, (3) Testing the difference in satisfaction among groups of customers with different characteristics in terms of gender, age, income, academic level, and occupation, and (4) Proposing some managerial implications to improve the quality of online services by interviewing directly and online 200 individual customers who have shopped at Tiki.vn E-commerce platform for at least the last six months, using the convenient sampling method. This study analyzes the reliability of the scale through the Cronbach's alpha coefficient, Exploratory factor analysis, and Linear regression analysis. The findings identified four factors that influence positively customer satisfaction regarding the quality of online services in Tiki.vn E-commerce platform in the order of descending strength: (1) Trust, (2) Customer service, (3) Web design and (4) Safety. In addition, the results show no difference in customer satisfaction according to different academic levels, but in terms of occupation and income, gender, and age. The results show that the factors influencing most customer satisfaction are Reliability and Customer Service. Some managerial implications are then proposed to improve the quality of online shopping services at Tiki.vn.

• The Journal of Asian Finance, Economics and Business
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• 제7권10호
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• pp.481-489
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• 2020

The study examines the role of facilitating conditions and user habits in the use of technology in Online Learning Platform (OLP) in Indonesia. The adoption of online learning, persistence, and learning results in online platforms is essential for ensuring that education technology is implemented and gets as much value as possible. People who use technology and systems will embrace new technologies even more. This quantitative study is based on a survey of 254 respondents, who were active users of the technology, and considers the facilitating conditions and user habits variables. Two research hypotheses were tested using the Partial Least Square-Structural Equation Modeling method. Cronbach's Alpha, path coefficient, AVE, R-square, T-test were applied. The results showed that the factors significantly influence the Online Learning Platform technology behavioral intention. This impact is primarily associated with the availability of the resources required to use OLP technology. The availability of these resources includes supporting infrastructures such as widespread Internet access, easy access to mobile devices, and file sizes that affect access speed. The findings of this study suggest that it is necessary to introduce and increase the availability of resources for using OLP technology, and familiarize people with the technology features.