News & Products for the week of January 20th 2026 Model railroad operators and builders can get the latest information about ...

Sometimes with the hustle and bustle of life, we forget to have a little bit of fun. Anyone who is obsessed with cars or engineering will love this enjoyable model kit that allows you to build your ...

Abstract: The active pantograph is a promising technology to suppress contact force (CF) fluctuation in pantograph–catenary systems (PCSs). Recently, the rapid development of reinforcement learning ...

Abstract: At present, the international general engineering cost calculation method is the engineering quota method and database. The main working principle is to use historical data to infer future ...