Linz-a modern center of economy and a social model city Interaction and coordinated development between desertification control and social economy in Xizang, China EXETER;REGIONAL CAPITAL; MODEL CITY Dynamic model and driving strategy of corporate social responsibility Antwerp; a city on the move Crossing the Growth Threshold:Service-Based Economy,Knowledge Process and Reshaping of Efficiency Model A City Geared For Growth The ImpacT of communIcaTIon TechnologIes on socIal sTrucTure——Take The example of smarT cITy Development of innovation-driven green economy in Huangshan City, China Propagation History Ranking in Social Networks:A Causality-Based Approach