feasibility

问题 I got a pyomo concrete model with lots of variables and constraints. Somehow, one of the variable inside my model violates one constraint, which makes my model infeasible: WARNING: Loading a SolverResults object with a warning status into model=xxxx; message from solver=Model was proven to be infeasible. Is there a way to ask the solver, the reason of the infeasibility? So for example, lets assume I got a variable called x , and if I define following 2 constraints, model will be ofc.

问题 Is it possible to have parental control in iOS? Like the admin can decide which app user can access, restrict internet access , contacts, photos etc for particular user? 回答1: This is not possible for a third-party app and a non-jailbroken device. Did you look at Settings → General → Restrictions? It’s not exactly what you’re after, but it’s a good start. Actually, this is possible, using the Device Enrollment Program. (This YouTube video found by Kudi shows the device enrollment profile