Screw loosening is considered to be a common problem with both screw-retained and cemented implant restorations. A wider abutment platform, as well as using a torque driver to tighten specifically designed screws may help prevent this loosening. However, there has been no clinical study evaluating either of these. To longitudinally compare the frequency of screw loosening in standard diameter, ...

BACKGROUND As one of the loads applied in implant dentistry, managing the torque is important for the success of an implant treatment. For this purpose, it is crucial to ascertain the level of torque being exerted with a hand driver. We have developed an adapter that makes it easy to measure torque by using a standard torque wrench in one's possession, rather than with a torquemeter. PROCEDUR...

The rise in the aging driver population presents society with a significant challenge-how to maintain safety and mobility on the roads. On the one hand, older drivers pose a higher risk of an at-fault accident on a mile-for-mile basis; on the other hand, independent mobility is a significant marker of quality of life in aging. In this paper, we review the respective literatures on cognitive neu...

In implementing an activity-based costing (ABC) system the selection of cost drivers is a major issue since accuracy must be traded off against the complexity of the ABCsystem. On the one hand, a high accuracy in allocating overhead costs often requires a high number of cost drivers. On the other hand, a small number of cost drivers is desirable to achieve acceptable information cost and to mak...

Deficits in specific cognitive and psychomotor capacities, such as attention, reaction time, memory, and hand-eye coordination ability are associated with increased crash risk, especially among older drivers (e.g., Anstey et al., 2005). Higher-order cognitive processes are also closely linked with hazard perception skills (e.g., Groeger, 2000). Employing a large professional driver sample, this...

in two steps: First, we determine basic activities of each upper body part (e.g. Two, one, or no hand is on the steering wheel; Head is looking left, straight, or right). Then these basic activities are combined in a fusion step to extract higher level of semantic description of driver activities (e.g. whether the driver is following the above safety tip or not). Our experimental evaluation wit...

Advanced Driver Assistance Systems (ADAS) assist the driver during the driving task to improve the driving comfort and therefore indirectly traffic safety, ACC (Adaptive Cruise Control) is a typical example for a “Comfort ADAS” system. “Safety ADAS” directly target the improvement of safety, such as a forward collision warning or other systems which assist the driver during an emergency situati...

This study presents an approach for distinguishing a driver from a response system. The proposed method can be applied to both unidirectional or bidirectional interactions, and to identical or structurally different systems. Compared with most previously proposed schemes, the present method is so "simple" that the driver-response relationships can generally be detected using a direct graphic wa...

Hand gestures are powerful human to human communication channel which convey a major part of information transfer in our everyday life. Hand gestures are the natural way of interactions when one person is communicating with one another and therefore hand movements can be treated as a non verbal form of communication. Hand gesture recognition is a process of understanding and classifying meaning...

The initial training generally puts the driver in a supervised learning context that is not the autonomous-driving context in which decision making and responsibility are assumed by the driver alone. As a consequence, the beginner is not able to contextualize the learned procedures and transform them in effective practices, to identify and manage pre-critical situations and to evaluate the degr...