Call for Papers Special issue on Edge Computing for Smart City A systematic review of a digital twin city: A new pattern of urban governance toward smart cities Call for Papers Special Issue on AI Powered Service Optimization for Edge/Fog Computing Gold Coast City;An Innovation City Call for Papers Special Section on Deep Learning for Natural Language Processing Call for Papers Special Issue on Complex System Modeling and Simulation On Developing Twin City Relationships The Great Holland City──Dordrecht Antwerp; a city on the move Motor City—Detroit