Lincoln. She is majoring in biological systems engineering, with an emphasis in biomedical engineering. Her research focus is in the influence of reflection on students' metacognitive strategies. This summer she will be participating in an REU program at Utah State University and working on a project that measures students' spatial abilities. Heidi A. Diefes-Dux (Professor) Heidi A. Diefes-Dux is a Professor in Biological Systems Engineering at the University of Nebraska -Lincoln (UNL). She received her B.S. and M.S. in Food Science from Cornell University and her Ph.D. in Food Process Engineering from the Department of Agricultural and Biological Engineering at Purdue University. She was an inaugural faculty member of the School of Engineering Education at Purdue University and now leads the Discipline-Based Education Research Initiative in the College of Engineering at UNL. Her research focuses on the development, implementation, and assessment of modeling and design activities with authentic engineering contexts. She also focuses on the implementation of learning objective-based grading and reflection.