Research

S. Valeva, A. Vallejo, R. Klimberg, M. Marzano, A. Geritz, M. Bruening. Gamifying analytics education: The impact of the Craft Beer League on student engagement, problem-solving skills, and collaboration. Journal of Statistics and Data Science Education, in press, 2025. 

S. Valeva, G. Pang, A.J. Schaefer, G. Clermont. Acuity-based allocation of ICU-downstream beds with flexible staffing. INFORMS Journal on Computing, 35 (2), 403-422, 2023.

R. Sun, L.M. Maillart, S. Valeva, A.J. Schaefer, S. Starks. Optimal pooling, batching and pasteurizing of donor human milk. Service Science, 14 (1), 13-34, 2022.

S. Valeva, M. Hewitt, B.W. Thomas. Managing uncertainty in demand through inventory and workforce development. International Journal of Production Research, 59 (21), 6507-6527, 2021.

O. Tavaslioglu, T. Lee, S. Valeva, A.J. Schaefer. On the structure of the inverse-feasible region of a linear program. Operations Research Letters, 46 (1), 147-152, 2018.

S. Valeva, M. Hewitt, B.W. Thomas. A matheuristic for workforce planning with employee learning  and stochastic demand. International Journal of Production Research, 55 (24), 7380-7397, 2017.

S. Valeva, M. Hewitt, B.W. Thomas, K.G. Brown. Balancing flexibility and inventory in workforce planning with learning. International Journal of Production Economics, 183, 194-207, 2017.

W. Baird, A. Beveridge, A. Bonato, P. Codenotti, A. Maurer, J. McCauley, S. Valeva. On the minimum order of k-cop-win graphs. Contributions to Discrete Mathematics, 9 (1) 70-84, 2014.

“Improving Critical Thinking Skills Through an Experiential Learning Exercise in an Analytics Class,” 50th Annual Northeast Business & Economics Association (NBEA) Conference, Lafayette Hill, PA, Oct 2023

"ICU Networks Design with Step-Down Units,” INFORMS Annual Meeting, Phoenix, AZ, Oct 2023

“Staffing and Patient Allocation in ICU Networks with Stepdown Units,” INFORMS Annual Meeting, Indianapolis, IN, Oct 2022

“Priority-Directed ICU Patient Transfer and Variable Capacity Planning,” INFORMS Annual Meeting, Virtual, Nov 2020

“Optimizing Patient Flows in the Intensive Care Units-Downstream Wards Network,” INFORMS Annual Meeting, Seattle, WA, Oct 2019

“Transfer Rates and Routing of Patients from ICUs to Downstream Units,” INFORMS Annual Meeting, Phoenix, AZ, Nov 2018

“Balancing Flexibility and Inventory in Workforce Planning with Learning and Uncertain Demand,” INFORMS Annual Meeting, Nashville, TN, Nov 2016

“Stochastic Assignment with Individual Learning,” POMS 27th Annual Conference, Orlando, FL, May 2016

“Stochastic Assignment with Individual Learning,” INFORMS Annual Meeting, San Francisco, CA, Nov 2014

“Cops and Robbers on Planar Graphs,” Nebraska Conference for Undergraduate Women in Mathematics, University of Nebraska, Lincoln, NE, Jan 2011

“Cops and Robbers on Planar Graphs” (poster), Joint Mathematics Meeting, New Orleans, LA, Jan 2011

“Cops and Robbers on Planar Graphs,” Young Mathematicians Conference, Ohio State University, Columbus, OH, Aug 2010