Dissertation

• Title: User Contribution and Its Social-Welfare Value in a Mobile Navigation App for Real-Time Traffic Information Around Urban Areas
• Abstract: Today, users of mobile devices (smartphones and tablets) adopt a variety of apps, use social features, and engage in crowdsourcing content as a public good. This dissertation explains their user community, i.e., a mobile virtual community, in terms of user contribution and its social-welfare value around urban areas. Essay 1 conceptualizes a virtual and spatial factor, i.e., virtual crowdedness, and addresses its role in encouraging user contribution. The findings are theoretically explained by the tension between prosocial behavior of and bystander effect on the mobile virtual community. Essay 2 theorizes whether and how user contribution, attributed to self-interest, supports social welfare for the whole citizenry. I found that user contribution improves the mobility of urban transportation and reduces social and economic costs. As an exemplar of citizen-data science, this dissertation takes a spatial and panel data approach to analyze the large-scale data on mobile app users, traffic conditions, and their locations in the urban region. The empirical findings are visualized and discussed to explain practical implications for mobile app design and policy on urban transportation.
• Tae Hun Kim has addressed the value of contribution crowdsourced by mobile app users. Tae has empirically employed the big-data and spatial analytics. Tae’s PhD dissertation was successfully completed in May 2018 thanks to the excellent committee members and their multifaceted supports. For the details, click here.
• Co-Charis: Drs. Vallabh Sambamurthy and Anjana Susarla
• Committee Members: Drs. Ashton M. Shortridge, Chenhui Guo, and Roger J. Calantone