1. Associate Professor, Dept. of Biological Systems Engineering, Univ. of Nebraska–Lincoln, 241 L.W. Chase Hall, Lincoln, NE 68583 (corresponding author).
2. Research Assistant Professor, Dept. of Biological Systems Engineering, Univ. of Nebraska–Lincoln, Lincoln, NE.
3. Graduate Research Assistant, Dept. of Biological Systems Engineering, Univ. of Nebraska–Lincoln, Lincoln, NE.