CECAN centre for the evaluation of complexity across the nexusdurham universitypeter barbrook-johnsonmike ballcorey schimpfBrian Castellanitutorials link to Kent State University Michael Ball complex-it online complex-it github articles on case-based modeling and the COMPLEXIT software App link to Kent State University Michael Ball Corey Schimpf Brian Castellani articles on case-based modeling and the COMPLEXIT software App