1. Graduate Student, Dept. of Civil Engineering, College of Engineering and Mines, Univ. of North Dakota, Grand Forks, ND.
2. Professor, Dept. of Civil Engineering, College of Engineering and Mines, Univ. of North Dakota, Grand Forks, ND.
3. Assistance Professor, Dept. of Energy and Petroleum Engineering, College of Engineering and Mines, Univ. of North Dakota, Grand Forks, ND.