This paper combines two different styles of asynchronous circuitry used in de-synchronization flow. We offer 20% power savings using approximation functions over previously known architecture while preserving the ability to measure the speed of the circuit at fabrication time or run time. The overhead introduced by additional circuitry is minimal when compared with the baseline dual-rail design.

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The widespread high-speed rail has become an important transportation mode for tourists in China, who travel primarily in groups. With more attractive price, railway operators may be able to expand ridership, improve customer satisfaction, and ultimately increase revenue. The traditional pricing method for passenger groups, however, is relatively simple, inflexible, which may lead to profit los...

We review some recent work on fiber-optic sensors for the high-speed railway environment. In particular, we show convenient fiber-optic solutions for rail and wheel monitoring, perimeter security and catenary protection in changeover sections. OCIS codes: (060.2370) Fiber optic sensors; (060.3735) Fiber Bragg gratings

High-speed became a fundamental political issue in Valencia, but also a major factor in regional planning and economic attractiveness and reactivated Valencia Parque Central project, which aim is to transform disused railways into a park and to build a station and its tracks underground. This new centrality should become the focal point of the whole urban and regional transport network. The new...

The paper considers the development of high speed rail in Europe in terms of its wider impacts on economic development. It shows how the focus has changed from the more limited objectives of enhancing rail capacity to a recognition of the potential for use as an instrument for enhancing competitiveness and cohesion within the context of the development of the trans-European networks. This howev...