is an associate professor of STEM education at Oregon State University. Her research widely concerns improving education at research universities. Her earlier research explored enhancements to faculty motivation to improve undergraduate education. Her more recent research concerns organizational change towards postsecondary STEM education improvement at research universities, including the interactions of levers (people, organizations, policy, initiatives) of change and documenting the good, hard work required across disciplinary boundaries to achieve meaningful change in STEM education. Ann Sitomer, Oregon State UniversityAnn earned a PhD in mathematics education from Portland State University in 2014. Her dissertation examined the informal ways of reasoning about ratio, rate and proportion that adult returning students bring to an arithmetic review class and how these ways of thinking interacted with the curriculum. Other research interests include teachers' professional noticing of learners' mathematical thinking and organizational change. Ann works on both the implementation and research sides of the ESTEME@OSU project. Dr. Kathleen Quardokus Fisher, Oregon State UniversityDr. Kathleen Quardokus Fisher is a postdoctoral scholar at Oregon State University. She is currently participating in a project that supports the use of evidence-based instructional practices in undergraduate STEM courses through developing communities of practice. Her research interests focus on understanding how organizational change occurs in higher education with respect to teaching and learning in STEM courses. Ms. Christina Smith, Oregon State UniversityChristina Smith is a graduate student in the School of Chemical, Biological, and Environmental Engineering at Oregon State University. She received her B.S. from the University of Utah in chemical engineering and is pursuing her Ph.D. also in chemical engineering with an emphasis on engineering education. Her research focuses on how the beliefs of graduate students around teaching and learning interact with and influence the environments in which they are asked to teach. Prof. Milo Koretsky, Oregon State UniversityMilo Koretsky is a Professor of Chemical Engineering at Oregon State University. He received his B.S. and M.S. degrees from UC San Diego and his Ph.D. from UC Berkeley, all in Chemical Engineering. He currently has research activity in areas related engineering education and is interested in integrating technology into effective educational practices and in promoting the use of higher-level cognitive skills in engineering problem solving. His research interests particularly focus on what prevents students from being able to integrate and extend the knowledge developed in specific courses in the core curriculum to the more complex, authentic problems and projects they face as professionals. Dr. Koretsky is one of the founding members of the Center for Lifelong STEM Education Research at OSU. AbstractThe purpose of this paper is two-fold. We first explore the question how mig...

The standard Monod model for microbial population dynamics in the chemostat is modified to take into consideration that cells can adapt to the change of nutrient concentration in the chemostat by switching between fast and slow nutrient uptake and growing modes with asymmetric thresholds for transition from one mode to another. This is a generalization of a modified Monod model which considers adaptation by transition between active growing and quiescent cells. Global analysis of the model equations is obtained using the theory of asymptotically autonomous systems. Transient oscillatory population density and hysteresis growth pattern observed experimentally, which do not occur for the standard Monod model, can be explained by such adaptive mechanism of the cells. Competition between two species that can switch between fast and slow nutrient uptake and growing modes is also considered. It is shown that generically there is no coexistence steady state, and only one steady state, corresponding to the survival of at most one species in the chemostat, is a local attractor. Numerical simulations reproduce the qualitative feature of some experimental data which show that the population density of the winning species approaches a positive steady state via transient oscillations while that of the losing species approaches the zero steady state monotonically.

is an associate professor of STEM education at Oregon State University. Her research widely concerns improving education at research universities. Her earlier research explored enhancements to faculty motivation to improve undergraduate education. Her more recent research concerns organizational change towards postsecondary STEM education improvement at research universities, including the interactions of levers (people, organizations, policy, initiatives) of change and documenting the good, hard work required across disciplinary boundaries to achieve meaningful change in STEM education.Dr. Shane A. Brown P.E., Oregon State University Shane Brown is an associate professor in the School of Civil and Environmental Engineering at Oregon State University. His research interests include conceptual change and situated cognition. He received the NSF CAREER award in 2010 and is working on a study to characterize practicing engineers' understandings of core engineering concepts. Dr. Susie J Brubaker-Cole, Oregon State University Dr. Susie Brubaker-Cole is vice provost for student affairs at Oregon State University. Prior to this appointment, she served for six years as OSU's associate provost for academic success and eight years as Stanford's associate vice provost for undergraduate education. She earned her bachelors' degrees in French and Comparative History of Ideas from University of Washington, and master's and doctoral degrees from Yale in French literature. She is interested in student perceptions of innovative pedagogies and course designs, and the impact of co-curricular engagement on student success. Dr. Ann Sitomer, Oregon State UniversityAnn earned a PhD in mathematics education from Portland State University in 2014. Her dissertation examined the informal ways of reasoning about ratio, rate and proportion that adult returning students bring to an arithmetic review class and how these ways of thinking interacted with the curriculum. Other research interests include teachers' professional noticing of learners' mathematical thinking and organizational change. Ann works on both the implementation and research sides of the ESTEME@OSU project.

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Background: Change leaders (faculty, administrators, and/or external stakeholders) need to develop relational expertise, recognizing the perspectives of others, to enable emergent, systemic change. We describe how change leaders of a grant-funded instructional change initiative developed relational expertise by analyzing faculty relationships and social subgroups to identify who was involved in discussions about teaching and learning and what specific topics were discussed. Results: Faculty discussions focused on daily classroom needs. Faculty who were in different departments or schools were mostly disconnected from each other, and faculty within these units often had subdivisions among them. Conclusions: Faculty lacked opportunities to discuss education, specifically, systems-level perspectives. The change leaders created organizational structures to catalyze communities, including an action research fellowship program, to support faculty in education discussions.

She received her PhD from Oregon State University and her BS from the University of Utah, both in chemical engineering. Her research focused on how the epistemology of graduate students around teaching and learning interact with and influence the environments in which they are asked to teach. She builds on this work in her new position by teaching a course for STEM undergraduate teaching assistants on the theory and practice of problem solving and other programs related to teaching in STEM.

is an associate professor of STEM education at Oregon State University. Her research widely concerns improving education at research universities. Her earlier research explored enhancements to faculty motivation to improve undergraduate education. Her more recent research concerns organizational change towards postsecondary STEM education improvement at research universities, including the interactions of levers (people, organizations, policy, initiatives) of change and documenting the good, hard work required across disciplinary boundaries to achieve meaningful change in STEM education.Dr. Shane A. Brown P.E., Oregon State University Shane Brown is an associate professor in the School of Civil and Environmental Engineering at Oregon State University. His research interests include conceptual change and situated cognition. He received the NSF CAREER award in 2010 and is working on a study to characterize practicing engineers' understandings of core engineering concepts. Dr. Susie J Brubaker-Cole, Oregon State University Dr. Susie Brubaker-Cole is vice provost for student affairs at Oregon State University. Prior to this appointment, she served for six years as OSU's associate provost for academic success and eight years as Stanford's associate vice provost for undergraduate education. She earned her bachelors' degrees in French and Comparative History of Ideas from University of Washington, and master's and doctoral degrees from Yale in French literature. She is interested in student perceptions of innovative pedagogies and course designs, and the impact of co-curricular engagement on student success. Dr. Ann Sitomer, Oregon State UniversityAnn earned a PhD in mathematics education from Portland State University in 2014. Her dissertation examined the informal ways of reasoning about ratio, rate and proportion that adult returning students bring to an arithmetic review class and how these ways of thinking interacted with the curriculum. Other research interests include teachers' professional noticing of learners' mathematical thinking and organizational change. Ann works on both the implementation and research sides of the ESTEME@OSU project.

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