Browsing by Author "Wu, Hao"
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Item The impact of street characteristics on older pedestrians’ perceived safety in Shanghai, China(Journal of Transport and Land Use, 2020) Wu, Hao; Zhang, Zhaoxi; Chen, Yong; Jiao, JunfengLand-use patterns and rapid urban sprawl greatly influence older adults’ mobility in China. Older pedestrians’ safety issues are crucial because these people are more frequently injured in traffic accidents. This research aims to investigate what street characteristics influence perceived safety among older pedestrians in Shanghai, China. A mix of research methods containing both quantitative and qualitative analyses were employed. The researchers recruited 68 elderly urban dwellers who each agreed to take a perceived safety survey using 39 simulated streetscape images that contained 12 street characteristics extracted from four sectional zones of streets. Ordinal logit regression was performed to investigate the impact of street characteristics on older pedestrians’ perceived safety. A semi-structured, in-depth interview was conducted with 8 out of the 68 participants. It was found that the street interface type, elevation differences, footpath width, paver directions, isolation facility type, and vehicle traffic all affected pedestrians’ perceived safety after adjusting for individual demographic attributes and the physical limitations of the participants. Understanding the street characteristics related to perceived safety will contribute to making more inclusive and walkable cities.Item Long-time Behavior of Hydrodynamic Systems modeling the Nematic Liquid Crystals(University of Minnesota. Institute for Mathematics and Its Applications, 2009-06) Wu, Hao; Xu, Xiang; Liu, ChunItem Towards a general theory of access(Journal of Transport and Land Use, 2020) Levinson, David; Wu, HaoThis paper integrates and extends many of the concepts of accessibility deriving from Hansen's (1959) seminal paper, and develops a theory of access that generalizes from the particular measures of access that have become increasingly common. Access is now measured for a particular place by a particular mode for a particular purpose at a particular time in a particular year. General access is derived as a theoretical ideal that would be measured for all places, all modes, all purposes, at all times, over the lifecycle of a project. It is posited that more general access measures better explain spatial location phenomena.