Using the notation defined in Section 8.7 and constraint (8.124), formulate a complete model in which the two-way flow on each hub i  I/spoke k  J connection must be greater than or equal to some...

Using the notation defined in Section 8.7 and constraint (8.124), formulate a complete model in which the two-way flow on each hub i
 I/spoke k
 J connection must be greater than or equal to some lower bound Lik if the hub is connected to the spoke.

Using the notation defined in Section 8.7, formulate a P-hub maximum covering problem in which coverage is defined in terms of the origin/ destination-specific level of service ratios, R_ij. Clearly define all notation. Also, state the objective function and all constraints in words and using notation.