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Auflistung nach Schlagwort "mobile applications"

1 - 4 von 4
  • Konferenzbeitrag
    A User Interface Concept for Context-Aware Recommender Systems
    (Mensch und Computer 2016 - Tagungsband, 2016) Hiesel, Patrick; Wörndl, Wolfgang; Braunhofer, Matthias; Herzog, Daniel
    A context-aware recommender system incorporates the knowledge of different contextual factors - such as time or weather information - to improve the item suggestions made to a user. While this provides great benefit to users, it might be hard for them to grasp why certain items are relevant, given the complexity of a context-aware recommender. In this paper, we propose, implement and evaluate a user interface concept that seeks to tackle this challenge. We show how popularity graphs can be used to inform the user about the relevance of items in different contexts and how users perceive different contextual factors given our concept. A user study with 14 participants demonstrates that our concept is valid and appreciated by users.
  • Zeitschriftenartikel
    Design and implement a mobile-based system to teach traffic signs to illiterate people
    (i-com: Vol. 21, No. 3, 2022) Alfayez, Zainab Hameed
    Nowadays, most information and communication technologies target literate users and neglect the 800 million illiterate individuals around the world. Although there have been several attempts to develop systems that help illiterate people and try to reduce the digital gap between them and those who are literate, it is still challenging to find accessible systems for illiterate people. This research aims to reduce the digital gap between illiterate and literate people in Iraq through developing a mobile application for learning traffic signs. Firstly, a requirement elicitation study was conducted to explore a set of design considerations and build an accessible interface for illiterate people. The study resulted in several design principles, such as using voice instructions, focusing on graphic content, and using the local language. Then, the mobile application was developed based on these design principles. Finally, an evaluation study was conducted to measure the usability of the developed application. The results revealed that the built application is efficient and effective, and the users were extremely satisfied in several aspects, such as easy usage and learnability, and declared that they would use it in the future and recommend it to others.
  • Zeitschriftenartikel
    Read for me: developing a mobile based application for both visually impaired and illiterate users to tackle reading challenge
    (i-com: Vol. 22, No. 3, 2023) Alfayez, Zainab Hameed; Alfayez, Batool Hameed; Abdul-Samad, Nahla Hamad
    In recent years, there have been several attempts to help visually impaired and illiterate people to overcome their reading limitations through developing different applications. However, most of these applications are based on physical button interaction and avoid the use of touchscreen devices. This research mainly aims to find a solution that helps both visually impaired and illiterate people to read texts present in their surroundings through a touchscreen-based application. The study also attempts to discover the possibility of building one application that could be used by both type of users and find out whether they would use it in the same efficiency. Therefore, a requirements elicitation study was conducted to identify the users’ requirements and their preferences and so build an interactive interface for both visually impaired and illiterate users. The study resulted in several design considerations, such as using voice instructions, focusing on verbal feedback, and eliminating buttons. Then, the reader mobile application was designed and built based on these design preferences. Finally, an evaluation study was conducted to measure the usability of the developed application. The results revealed that both sight impaired and illiterate users could benefit from the same mobile application, as they were satisfied with using it and found it efficient and effective. However, the measures from the evaluation sessions also reported that illiterate users had used the develop app more efficiently and effectively. Moreover, they were more satisfied, especially with the application’s ease of use.
  • Konferenzbeitrag
    Usability of Gesture-based Mobile Applications for First-time Use
    (Mensch und Computer 2015 – Proceedings, 2015) Heuwing, Ben; Köller, Ina; Schanz, Viktor; Mandl, Thomas
    Gestural touch interaction is increasingly being employed when designing interaction for mobile devices. This study compares the usability of manipulative touch gestures to that of an established interaction style based on buttons and menus in a realistic setting during first-time use of two mobile productivity applications. Usability is measured as task success, time on task, error rates, and user satisfaction ratings. While results over all tasks indicate a negative influence of gestures during first-time use, they also show that users are able learn new gestures in a shorter time span than expected. However, this does not ensure users’ overall satisfaction with a gestural interface.