Since the surface operation of hub airports was facing severe congestion and aircraft delay under the de-icing mode. some practical problems of improving aircraft operation and support efficiency are put forward. A two-phase model is constructed to coordinate the scheduling of aircraft surface operation (ASO) and de-icing support resources operation (DSRO). An optimized method is used... https://thebookmarkid.com/story19599539/strategi-aktif-pasif-dalam-optimalisasi-portofolio-saham-indeks-lq-45