Recent years, Gibson's affordance concept has drawn many attentions in the field of human-computer interface and product design. However, the development of affordance concept in design practice is by far not yet matured, and the differentiation between affordance and symbolic meaning of designed artifacts is not clear. As a result, that wrongly exercising the techniques of “Product Semantics” ...

User contributions are critical to social commerce sites. Prior studies mainly examined motivational factors influencing user contributions. In the current study, we examine effects of interface layouts on user contributions, from the perspective of attention allocation. We also distinguish between the two types of user contributions: creating original sharing and appreciating others’ sharing. ...

This thesis presents the use of wearable computers for aiding human communication over a distance, focusing on interaction aspects that need to be resolved in order to realize this goal. As wearable computers by definition are highly mobile, always on, and always accessible, the ability to communicate becomes independent of place, time and situation. This also imposes new requirements on the us...

This paper reports a study on the role of a subject’s intention on animation interference. Experiment results show that first, experiment instruction can sometimes eliminate animation interference. Second, the moment animation is on the screen does not differentiate the animation interference if the subjects are not instructed to ignore animation. Third, stay on animation has less impact than a...

Continuous-media applications require more efficient and flexible support from real-time threads than traditional real-time systems. It includes functionalities such as the dynamic management of thread attributes and the support of multiple thread models. In this paper, we will describe the design and implementation of user-level real-time threads on the RT-Mach micro kernel. Since they are imp...