A variety of studies demonstrate the existence of prejudice in the manner and content of health care delivery. Alcoholics, attempted suicides, drug addicts, prostitutes, the mentally retarded or mentally ill, the aged and women have been found to receive less adequate health care. Previous...

Sufficient conditions have been developed for testing the optimality of solutions to all-integer and mixed-integer linear programming problems after coefficient changes in the right hand side and the objective function, or after introduction of new variables. The same conditions can be used as...