Yu-Hung Chien

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Rapid scientific and technological advances in the field of ubiquitous computing have stimulated the gradual popularization of handheld devices. Mobile devices, such as personal digital assistants (PDAs) and smartphones, are being used increasingly to accomplish tasks originally performed by desktop computers (e.g., viewing emails, writing documents,(More)
For products sold with a warranty, preventive maintenance (PM) actions by either the manufacturer and/or the buyer has an impact on the total cost for both parties. In this investigation, we use a model to study the effect of PM carried out by the buyer on non-repairable items sold under a free replacement renewing warranty, and a penalty will be incurred(More)
The environment is an important but overlooked piece in the construction of multiagent-based scenarios. Richness, believability and variety of scenarios are inseparable from the environment because every action and interaction of agents is based around the environment they are situated in. The prerequisite, however, is that agents must be able to understand(More)
Agent technologies have been successfully applied to craft believable characters in interactive scenarios. However, intelligent characters specialized for a controlled scenario with a predefined story are inadequate for open-ended scenarios. The key to deal with the openendedness problem lies in the characters’ ability to understand and analyze unexpected(More)
For products sold with a warranty, preventive maintenance (PM) by either the manufacturer and/or the buyer has an effect on the total cost for both parties. In this investigation, we use a model to study the effect of PM carried out by the buyer on items sold under a free-replacement renewing warranty. For the manufacturer, if the product fails during the(More)
Automatic dynamic displays, e.g., scrolling displays, are frequently used to present text information on small screens. This study examined the effects of three dynamic displays [leading, scrolling, and rapid serial visual presentation (RSVP)] and three presentations speeds [171, 250, and 305 wpm (words per minute)] on subjects' reading comprehension for(More)
Leading displays represent mechanisms for exhibiting temporal instead of spatial information to overcome the limited display space of mobile devices. Prior studies focused only on information presented but disregarded the influence of context of use and learnability. In this study, 12 Chinese-speaking college students were presented a small-screen mobile(More)