The Pantograph: the machine that will amaze you! ‘Ultimately accountable’: Walz vows to recover funds Letters to the editor: One of Trump's recent claims isn't just dubious. It's mathematically ...

Abstract: Pantograph arc has become a potential hazard for the safe running of electric locomotives. It is essential to build an accurate mathematical model of pantograph arc for arc simulation.

Abstract: According to field measurements, the damping ratio of a railway catenary varies along the span length and shows an inherent uncertainty. In numerical simulations, it is common to assume a ...

Your photos deserve to exist as more than mere bits and bytes. Here's how to pick the right photo printer—whether for humble snapshots or big, bold art prints—and our top lab-tested picks. I’m the ...

Need to scan, copy, or fax, in addition to printing? An AIO printer is what you want. Find the right multifunction machine based on our in-depth reviews and expert advice. Most of my current work for ...

It's time to crush your running goals—be it qualifying for the Boston Marathon or running for the very first time. To get started, choose your plan. When it opens in your browser, select the download ...