A renowned Seoul-based artist will use steel ground into a fine, black powder to write calligraphic inscriptions on the floor of the CU-Boulder Visual Arts Complex on Feb. 11, followed by a performance-art piece and a lecture by the artist. This is one of several free events during the two-week residency of Kim Jongku at the University of Colorado Boulder Department of Art and Art History. Kim works in sculpture, video, painting and photography and will be in residency here Feb. 3 to Feb. 14.