This Friday, Oct. 14, the Harwood Art Center (1114 Seventh Street NW) will host one of its twice-yearly open studio evenings during which the numerous artists who work and play at the center will open their studios to the community. It's something like visiting the zoo except without the bars. (I mean that in a good way.) To quadruple your pleasure, that same night Susan Byrnes, Bruce Shortz and Dan Noyes will host receptions for their full-scale solo exhibits at the Harwood. The fun begins at 5 p.m. and lasts until approximately 8:30 p.m. 242-6367.