Once hotly debated as an experimental, costly pitch to restore the vulnerable eastern span in the wake of the 1989 Loma ...

The Center City trolley tunnel has been closed for more than a month, after new slider parts damaged the overhead wiring ...

There will be no Christmas miracle for trolley riders. The Center City trolley tunnel will remain closed at least through the end of December, SEPTA said Wednesday. Officials did not offer a precise ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Somer G. Anderson is CPA, doctor of accounting, and an accounting and finance professor who has been working in ...

Abstract: The efficiency of current collection of high-speed trains relies on the interaction performance of the pantograph-catenary. The geometry deviation is inevitable for the catenary even built ...

Abstract: Brace sleeve (BS) fasteners, i.e., nut and bolt, are small components but play essential roles in fixing BS and cantilever in railway catenary system. They are commonly inspected by onboard ...

For the third time, Petrobras is set to receive the highest award that an oil company can be given, bestowed by the Offshore Technology Conference (OTC) committee, based in Houston, USA. The OTC ...

Did you ever wonder at the silky smooth of digital curves or the sleekness of a car’s body? You were probably looking at something created by Bézier curves, even if you didn’t know it. This ...

Lordosis is a curvature problem in the neck or lower back. If lordosis is not painful or severe, exercises and good posture can help. Severe lordosis with pain should be checked by a healthcare ...