In this paper, new Network Data Envelopment Analysis (NDEA) models are developed to evaluate the efficiency of regional electricity power networks. The primary objective of this paper is to consider perturbation in data and develop new NDEA models based on the adaptation of robust optimization methodology. Furthermore, in this paper, the efficiency of the entire networks of electricity power, i...

We let Ta and Ma denote respectively the values of the time-to-event outcome and mediator that would have been observed had the exposure A been set to level a. We let Tam denote the value of the time-to-event outcome that would have been observed had the exposure, A, and mediator, M , been set to levels a and m, respectively. The average controlled direct effect comparing exposure level a to a∗...