Regulation and decision system of water, fertilizer and salt in salinized farmland based on WebGIS IoT-Based Cost Saving Offloading System for Cellular Networks Software System Evolution Analysis Method Based on Algebraic Topology EVchain: An Anonymous Blockchain-Based System for Charging–Connected Electric Vehicles ReseaRch on GRadient Valuation techniques Based on the system of intellectual PRoPeRty RiGhts finance MIX-RS:A Multi-Indexing System Based on HDFS for Remote Sensing Data Storage Restrictions on incremental financial investment in the construction of modern public cultural service system: Based on investigations of county public libraries An Axiom System of Probabilistic Mu-Calculus Research on index system of sustainable development of telecom operator Construction of ecological curriculum system in universities and colleges