Technological human surrogates, including robotic and virtual humans, have been popularly used in various scenarios, including training, education, and entertainment. Prior research has investigated the effects of the surrogate’s physicality and gesturing in human perceptions and social influence of the surrogate. However, those studies have been carried out in research laboratories, where the ...

Combinatorial Interaction Testing (CIT) is important because it tests the interactions between the many parameters that make up the configuration space of software systems. We apply this testing paradigm to a Python-based framework for rapid development of webbased applications called Django. In particular, we automatically create a CIT model for Django website configurations and run a state-of...

This paper discusses interaction testing using random testing. Random testing can generate test cases very fast; but directly applying this method to interaction testing may result in insufficient interaction coverage if constraints exist over parameter values. We propose a random testing approach that is tailored to constrained interaction testing to solve this problem. In this approach, if a ...

Based on the results of a user study, this paper presents a set of hybrid interaction techniques for groups of paper and digital documents on interactive surfaces. By leveraging a novel concept of tangible controls, these techniques allow highly flexible, fluid and lightweight interactions. Author

This paper describes the design and implementation of a lowcost portable tabletop to be used in classrooms. This solution enables pen and touch interactions over a projected canvas. Twelve users participated in a user study that gauged the system’s effectiveness to support drawing and moving objects on the surface. Additionally, a stress test to evaluate users’ identification was conducted. Res...

Multimodal mobile interfaces require users to adopt new and possibly strange behaviors in public places. It is important to design these interfaces to account for the social restrictions of public settings. However, past research in multimodal interaction has primarily focused on issues of sensing and recognition rather than the investigation of user opinions and social factors that influence t...