1. Department of Electrical and Computer Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, USA
2. School of Journalism and Media, Moody College of Communication, The University of Texas at Austin, Austin, TX, USA
3. School of Journalism and Mass Communications, College of Information and Communications, University of South Carolina, Columbia, SC, USA
4. School of Communication, College of Communication and Information, University of Tennessee, Knoxville, TN, USA
5. Department of Communication Studies, Technology and Information Policy Institute, Moody College of Communication, The University of Texas at Austin, Austin, TX, USA