Why not treat yourself to a relaxing evening of creativity with an introduction to the the wonderful world of modern brush calligraphy? This 2 hour brush pen calligraphy workshop offers an inspiring ...

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Forbes contributors publish independent expert analyses and insights. Joanne Shurvell writes about travel, food, culture and fashion.

Abstract: In this article, a three-dimensional (3D) pen-like positioning system based on the high-precision 3D ultrasonic (US) positioning method is presented. The high-precision 3D US positioning ...