Simulation Performance Tuning of Dual-priority Delta Networks through Queuing Scheduling Disciplines/Open Call Articles Novel Algorithm in Activation Process of GPON Networks/Open Call Articles Network Simulation and Performance Evaluation of WiMAX Extensions for Isolated Research Data Networks/Open Call Articles The Two-Step P2P Simulation Approach/Open Call Articles Modified GIANT Dynamic Bandwidth Allocation Algorithm of NG-PON/Open Call Articles Simulations for Resource-Allocation Protocol Optimization for MIL-STD-188-186 over a UHF SATCOM Network/Special Issue on Smart Cities: Multidisciplinary Approach