Description: Electron diffraction patterns for single crystal and polycrystalline materials are displayed on a CRT screen. A Welch model 2639 'Electron Diffraction tube' is used in an experiment in ...

Researchers from Hohai University have developed a data-driven model to enhance GNSS positioning accuracy by systematically ...

A pioneering study has introduced a data-driven approach to tackling site-specific unmodeled errors in Global Navigation ...