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...

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...

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...

There are many di-erent kinds of guards in a simple polygon that have been proposed and discussed. In this paper, we consider a new type of guard, boundary guard, which is a guard capable of moving along a boundary of a polygon and every interior point of the polygon can be seen by the mobile guard. We propose an algorithm to 1nd the shortest boundary guard of a simple polygon P in O(n log n) t...

pursue crime as a calling, although by their dexterity and good fortune they had been able to elude the proof of any specific offence. This charge drew public attention to an extent for which I was not prepared. By those best acquainted with the class to be held in check, and with their manifold inflictions on society, I believe I may venture to state that it met with acceptance; but having bee...

Inspection of the rail state in order to detect defects is one of the basic tasks in railway maintenance. Rail defects exhibit different properties and are divided in various categories relating to the type and position of flaws on the rail. In this paper, we propose a technique, based on texture analysis of rail surface, to detect and classify a particular class of defects: corrugation.

The rail gun is an electromagnetic device that converts electrical energy into mechanical energy for accelerating the projectile to hypervelocity. In order to accelerate the projectile between the conducting rails, it uses the magnetic field generated by the rail current. The rail gun consists of two parallel conductors called the rails that are bridged by a non-ferromagnetic conductor called a...