Understanding the relationship between short-term subway ridership and its influential factors is crucial to improving the accuracy of short-term subway ridership prediction. Although there has been a growing body of studies on short-term ridership prediction approaches, limited effort is made to investigate the short-term subway ridership prediction considering bus transfer activities and temp...

We introduce AudioMetro, application software for blind users that represents a subway system in a desktop computer to assist mobilization and orientation in a subway network. A user can organize and prepare a travel by using the software before riding the subway. Conclusions of the usability study revealed the critical importance of using key interface elements, such as audio-based hierarchy m...

Pedestrians intercepted near the exits of a subway station in downtown Hong Kong were surveyed using a questionnaire and quota sampling in October 2012. The survey sampled 408 residents and tourists aged 16 and above. The awareness of the 16 ads ranged from 18 to 80 percent with an average 43.5 percent. The layouts of the two subway ads received highest awareness were focused and had a clear di...

there are various parameters that affect stability and expansion of failure zones in under pressure tunnels. among the important parameters that affect failure zones around the tunnels are cohesion and internal friction angle of the rock mass. in addition, the cross sectional shape is the considerable point in failure distribution around the tunnels. the stress analysis method is one of the app...

Modeling and analysis of a subway fire emergency response processes are extremely important in metro operation. In this study, a Petri net based approach is proposed to model and analyze the time and resource issues of subway fire emergency response processes. More specifically, the formal specification of subway fire emergency response process is first defined and a real subway fire response p...

A prior study in New York City observed that airborne concentrations of three metals found in steel - iron, manganese, and chromium - are more than 100 times higher in the subway system than in aboveground air. To investigate the potential for health effects of exposure at these levels, we conducted a pilot study of subway workers comparing personal exposures to steel dust with biomarkers of me...

BACKGROUND Obesity is an epidemic in the United States. Two-thirds of the population is overweight and does not get enough exercise. Eastern cities are full of escalators that transport obese Americans to and from the subway. Walking stairs is a moderate activity requiring 3-6 metabolic equivalent tasks (METS) and burning 3.5-7 kcal/min. We determined the caloric expenditure and potential weigh...

Because tunnels generally have tubular shapes, the distribution of tie points between adjacent scans is usually limited to a narrow region, which makes the problem of registration error accumulation inevitable. In this paper, a global registration method is proposed based on an augmented extended Kalman filter and a central-axis constraint. The point cloud registration is regarded as a stochast...

In booted sleeper floating track systems wherein the concrete bed, rail, and are structurally separated, mismatches can occur between substructure owing to deformations. Nevertheless, mutual behavior substructures has not been studied extensively. To address this limitation, effect of uplift subsidence on deformation a boosted system installed in subway box tunnel was analyzed using finite elem...