This paper uses a market potential approach to examine the evolution of the rail transport network of China and its spatial distributional impacts on local accessibility, with a particular focus on high-speed rail improvements. Accessibility is measured by using a “market potential” function that was derived from the general equilibrium model of the economic geography literature, and is empiric...

We report the near-IR detection of a prominent CIV absorption in the rest-frame UV spectrum of the most distant known QSO, SDSS J104433.04−012502.2, at z = 5.80. This QSO was recently observed with XMM-Newton and it was found to be notably X-ray weak. The equivalent width of the CIV absorption feature (∼10Å) strongly supports the idea that the X-ray faintness of this QSO is due to heavy absorpt...

There is concern that roadside advertising presents a significant risk to driving safety, with conservative estimates putting external distractions responsible for up to 10% of all traffic incidents (Young and Mahfoud, 2007). Studies indicate that any interference that distracts the driver from looking forward from the roadway for more than two seconds significantly increases the chances of cra...

Transportation Research Record: Journal of the Transportation Research Board, No. 2374, Transportation Research Board of the National Academies, Washington, D.C., 2013, pp. 190–200. DOI: 10.3141/2374-22 C. T. Rapp, M. S. Dersch, J. R. Edwards, and C. P. L. Barkan, Rail Transportation and Engineering Center, Department of Civil and Environmental Engineering, University of Illinois at Urbana–Cham...

Damage on rail increasingly originates from the surface of the rail as a result of for example rolling contact fatigue (RCF). This is a major concern for track operators, who operate test regimes for flaw detection and monitoring. The paper aims to assess the feasibility of applying electromagnetic (EM) simulation techniques to high frequency magnetic induction sensing of flaws in a section of ...

The aim of this study is to compare and analyze the components of ground reaction force (GRF) relative to the foothold heights during downward step of 16-t truck. Adult males (n= 10) jumped downward from each 1st, 2nd, 3rd foothold step and driver's seat orderly using hand rail. Sampling rate of force components of 3 axis (medial-lateral [ML] GRF, anterior-posterior [AP] GRF, peak vertical forc...

A hydraulic lifting-moving-rail equipment test bench is designed, which can lift and move the rail for examining and repairing. The loading system is an electric-hydraulic servo control system. The original control strategy has some disadvantages, such as overshoot and slow response, which severely effect dynamic performance and test precision of system. According to the fuzzy control theory, t...