CITIES ON THE THRESHOLD OF A NEW MILLENNIUM A new ApproAch to nAturAl cApitAl sustAinAble development A systematic review of a digital twin city: A new pattern of urban governance toward smart cities Usage Count:A New Indicator to Detect Research Fronts Towards a new climaTe economics:research areas and prospecTs Cross-correlation analysis of crude oil and new energy markets: A new perspective based on carbon emission market A New Analytic Framework on Mainstream Economic System in Complex Reality A new approach to spatial source apportionment of haze pollution in large scale and its application in China Government Role in Fostering Emerging Technological Industries: A New Perspective for Industrial Policy Research Construction of industrial ecological chain for characteristic small town:A case study of VR Town at Gui-An New District