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Research indicates that using a cell phone to talk or text while maneuvering a vehicle impairs driving performance. However, few published studies directly compare the distracting effects of texting using a hands-free (i.e., speech-based interface) versus handheld cell phone, which is an important issue for legislation, automotive interface design and(More)
Integrating visual information spatially and temporally is important in motion perception and in many daily activities, such as steering in a driving task. Our recent research showed that reduced optic flow quality and quantity impaired steering performance under reduced visibility conditions. However, it is not clear how spatial and temporal integration of(More)
Previous research shows that dividing attention between multiple targets in the visual field occurs frequently in everyday activities. The cost of dividing attention has been found to be affected by various environmental factors. One such factor is the contrast of the targets from their background (Plummer & Ni, 2014), which has important applications for(More)
Research has shown the importance of spatial and temporal integration of visual information in motion perception and steering control under reduced visibility conditions. The current study examined the relationship between a 2D shape detection task and a steering control task under reduced visibility conditions for younger drivers. In the 2D shape detection(More)
In this paper, we proposed an analysis method on service capacity of CDMA system supporting data services. Cell spectrum efficiency and access available space the two concepts are used to constructed a new network performance evaluation system. An application layer service model and its corresponding cross-layer mapping method are also proposed. Based on(More)