1. Ph.D. Student, Biosystems Engineering Dept., Tom E. Corley Building, Auburn Univ., Auburn, AL 36849.
2. Postdoctorate, School of Forestry and Wildlife Sciences, Forestry and Wildlife Building, Auburn Univ., Auburn, AL 36849.
3. Associate Professor, Biosystems Engineering Dept., Tom E. Corley Building, Auburn Univ., Auburn, AL 36849 (corresponding author).
4. Associate Professor, School of Forestry and Wildlife Sciences, Forestry and Wildlife Building, Auburn Univ., Auburn, AL 36849.