Winnie Wei Wan Lam

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Research on the extent to which pedestrians are exposed to road collision risk is important to the improvement of pedestrian safety. As precise geographical information is often difficult and costly to collect, this study proposes a potential path tree method derived from time geography concepts in measuring pedestrian exposure. With negative binomial(More)
This study proposes a combined scheme, denoted as the combined syn-|S| control chart, which comprises a synthetic |S| sub-chart and a standard |S| subchart. This proposed control chart can be used to detect shifts in the covariance matrix of bivariate process (i.e. multivariate process with quality characteristics p = 2). It is assumed that the underlying(More)
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