In 2014, more than 43 cities in China were racing to construct their urban rail systems (including metro and light rail systems), recognizing that an urban rail system will be a good solution to the tough problems that they are faced with, including traffic congestion and PM2.5 air pollution. On 22 August 2012, the first electric double-layer capacitor (EDLC) energy storage-type rail vehicle in...

Frequency of services and vehicle size are important policy instruments of railway companies. Extending Mohring’s basic ‘square root model’ for frequencies, we arrive at more general formulations for frequency, vehicle size and price under alternative regimes of welfare and profit optimisation. It appears that in the more refined models the frequency response of railway companies with respect t...

Currently most modern dc rapid transit systems around the world use running rails or a negative rail as the negative return circuit for the dc traction current. These rails are intentionally kept ungrounded from ground (earth) by using insulating material between the rail and earth to minimize dc stray current. This configuration of return current rail develops varying voltage with respect to g...

OBJECTIVES To examine the effect of an advanced practice nurse (APN) intervention on restrictive side rail usage in four nursing homes and with a sample of 251 residents. A secondary question explored the association between restrictive side rail reduction and bed-related falls. DESIGN Pre- and posttest design. SETTING Four urban nursing homes. PARTICIPANTS All nursing home residents pres...

An ideal magnetic rail should provide a homogeneous magnetic field along the longitudinal direction to guarantee the reliable friction-free operation of high temperature superconducting (HTS) maglev vehicles. But in reality, magnetic field inhomogeneity may occur due to lots of reasons; the joint gap is the most direct one. Joint gaps inevitably exist between adjacent segments and influence the...

The current paper examines whether or not reductions in transportation costs characterize long-run patterns of production specialization in a regional economy, and the possible welfare effects of these patterns on price convergence and wage dispersion. In answering this question I exploit a natural experiment in the Austro-Hungarian (or ”Habsburg”) Empire, where massive railroad development occ...

The Staggers Rail Act of 1980 is widely perceived to have deregulated the U.S. freight rail industry. Yet substantial rail traffic remains potentially subject to regulatory rate intervention, and in the Post-Staggers era regulators have developed a detailed and expanding regulatory framework for rail shipments. This regulatory framework embodies elements of traditional public utility regulation...

This paper discusses the design issues for an high resolution rail-to-rail analog-to-digital converter. The circuit proposed uses conventional digital technology (without precise capacitors) and allows 12 bits of resolution to be achieved using 2.4 V bias and 2.4 V input dynamic range. The proposed architecture is based on the successive algorithm technique and uses a rail-to-rail autozeroed co...

The floating-gate transistor can be used to design analog circuits, such as current mirrors [1], current scaler[2] and current multiplier [3, 4] and divider [4]. The multiple input floating-gate transistor can be used to design ultra lowvoltage “pseudo differential” pairs [1], hence ULV rail-to-rail amplifiers and analog multipliers are feasible using the floating-gate technique. In this paper ...

Abstract—A fuel injection system to drive a common rail injector was developed using an 8-bit microprocessor. Common rail pressure control and injector driving systems are both essential for injecting fuel at a controlled pressure. With various duty ratios of the square wave generated from the CCP (capture compare PWM) pin of a microprocessor to the common rail pressure controller, the common r...