The purpose of this research-in-progress paper is to explore factors affecting users’ participation in microblogging. Based on literature review and the stimulus-organism-response (S-O-R) framework, a conceptual model is proposed to depict the relationships between the features of micro-blogging services and users’ behavior. Specifically, the features of micro-blogs such as subscription, broadc...

We study videoconferencing for meetings with some co-located participants and one remote participant. A standard Skype-like interface for the remote participant is compared to a more immersive 3D interface that conveys gaze directions in a natural way. Experimental results show the 3D interface is promising: all significant differences are in favor of 3D and according to the participants the 3D...

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The behavior of others and the price of giving are two important determinants of contributions to public goods. This paper tests in two field experiments, whether men and women differ in their reaction to either a change in the behavior of the average group behavior or the price of giving, i.e. a matching mechanism. The results of the field experiment show that men and women do not differ in th...

The present research aimed to employ dynamic and static emotions as social cues in e-learning environments for computers to be able to convey social presence and increase children’s motivation with learning. To understand how children of different gender react to the two types of emoticon in e-learning environment, a math problem-solving practice program was designed to test their reactions. Th...

This paper presents an overview of the Social Event Detection (SED) task that has been running as part of the MediaEval benchmarking activity for three consecutive years (2011 2013). The task has focused on various aspects of social event detection and retrieval and has attracted a significant number of participants. We discuss the evolution of the task and the datasets, we summarize the set of...

Previous work indicates that physical robots elicit more favorable social responses than virtual agents. These effects have been attributed to the physical embodiment. However, a recent meta-analysis by Li [1] suggests that the benefits of robots are due to physical presence rather than physical embodiment. To further explore the importance of presence we conducted a pilot study investigating t...

At a time of increased social usage of net and collaborative applications a robust and detailed theory of social presence could contribute to our understanding of social behavior in mediated environments, allow researchers to predict and measure differences among media interfaces, and guide the design of new social environments and interfaces. A broader theory of social presence can guide more ...

It has long been a challenge for online game providers that, after playing a game for a certain period of time, online game players frequently switch to alternative games without much hesitation. Current IS continuance theories, that are mainly developed to interpret user continuance of general utilitarian IS, are ineffective to interpret user continuance of hedonic IS. In this study, based on ...

Video instant messaging tools are not as widely used as we would have predicted and have so far failed to fulfill their promise to become an indispensable tool of social presence, interacting within the workgroup environment and creating a sense of community. Whilst users are becoming comfortable with videoconferencing and software video meetings, the use of video in “awareness” is still very u...