1. Architectural Engineering, University of Nebraska-Lincoln, Omaha, NE 68182, USA,
2. DDP Engineered LED Solutions, 445 South Douglas Street, El Segundo, CA 90245, USA
3. Department of Civil, Environmental, and Architectural Engineering, University of Colorado at Boulder, Boulder, CO 80309-0428, USA
4. Architectural Engineering, University of Nebraska-Lincoln, Omaha, NE 68182, USA