This paper did a theoretical study on the Nadal’s L/V ratio. The analysis is based mechanical model of an object sliding incline (or slope), which widely used in college physics. key that direction frictional forces always opposite to motion object. Therefore, there are two directions (upward or downward) for between and depending states Thus, must be ratios same reason. demonstration shows wit...

In recent years, transportation system safety analysis has become increasingly challenging and highly demanding. Unstructured data contain sufficient information from which inherent interactions can be extracted. Determining how to process fuse a large amount of unstructured is task. this paper, we propose text-based Bayesian network (TBN) method establish (BN) based on text records, where the ...