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In recent years, we have been faced with a series of natural disasters causing a tremendous amount of financial, environmental, and human losses. The unpredictable nature of natural disasters behavior makes it hard to have a comprehensive situational awareness (SA) to support disaster management. Using opinion surveys is a traditional approach to analyze public concerns during natural disasters; however, this approach is limited, expensive, and time-consuming. Luckily the advent of social media has provided scholars with an alternative means of analyzing public concerns. Social media enable users (people) to freely communicate their opinions and disperse information regarding current events including natural disasters. This research emphasizes the value of social media analysis and proposes an analytical framework: Twitter Situational Awareness (TwiSA). This framework uses text mining methods including sentiment analysis and topic modeling to create a better SA for disaster preparedness, response, and recovery. TwiSA has also effectively deployed on a large number of tweets and tracks the negative concerns of people during the 2015 South Carolina flood.

Abstract:User satisfaction with information systems (IS) is considered an important indicator of information systems success and has been the subject of numerous research studies since the field's inception. In this paper, we review the user satisfaction research in the IS field. We discuss the roots of user satisfaction research as it pertains to satisfaction studies in marketing research and how these studies have been used to inform the IS context. We also discuss how the study of user satisfaction and use of the construct in IS research has evolved and matured over time. Finally, we discuss antecedents and outcomes of user satisfaction identified in IS research and provide suggestions for future research.

User satisfaction with information systems (IS) is considered an important indicator of information systems success and has been the subject of numerous research studies since the field's inception. In this paper, we review the user satisfaction research in the IS field. We discuss the roots of user satisfaction research as it pertains to satisfaction studies in marketing research and how these studies have been used to inform the IS context. We also discuss how the study of user satisfaction and use of the construct in IS research has evolved and matured over time. Finally, we discuss antecedents and outcomes of user satisfaction identified in IS research and provide suggestions for future research.

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