The Richard L. Nelson Gallery at the University of California Davis, in collaboration with the City of Davis, California, recently challenged its local artists with a public arts project, “Temp Work,” based on what they’d do with public spaces if given free rein. Diana Jahns was one of seven artists given the opportunity to have her work, Red Willow and Sedge (soft pastel on rag board, 72x90, on six 38x30-panels) on display at the former police substation, near the historic Southern Pacific Amtrak Depot, through June 30. It’s such a simple, but powerful concept: Put moving art in a place that gets the public moving.