Independent surveys conducted by leading trade publications have consistently shown that Advance is by far the most recognized and preferred brand of ballasts. That preference is shared by lighting specifiers and engineers, and key national account segments.     Advance is dedicated to supporting its brand at every opportunity, including a commitment to promote the PBA program nationwide.       Advance is promoting Powered by Advance with an on-going national advertising campaign to targeted end-users, lighting designers, distributors and specifiers. Look for the attention-getting PBA ads in publications such as Building Operating Management, Architectural Lighting, TED and LD+A.