LICnew                  Calculate the LIC estimator based on A-optimal
                        and D-optimal criterion
TLIC                    TLIC function based on LIC with T-distributed
                        errors
beta_AD                 Caculate the estimators of beta on the A-opt
                        and D-opt
beta_cor                Caculate the estimator of beta on the COR
terr                    terr function is used to generate a dataset
                        where the error term follows a T-distribution
