Risk Factor Analysis of Hospital Readmissions at St. Petersburg General Hospital.

Background: Decreased readmission rates are largely seen as an indicator of effective care and improved resource management. The case management team at St. Petersburg General Hospital in St.

Mechanistic Models of Conflict between Ant Colonies and Their Consequences for Territory Scaling.

Territory size in social insects depends on the rules by which border conflicts are resolved. We present three mechanistic mathematical models of conflict, inspired by the behavior of the pavement ant Tetramorium immigrans, to predict the advantage of larger colonies in pairwise contests and the resulting scaling of territory size with worker force. The models track the number of ants in the nest traveling to and from the boundary or engaged at the boundary.