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Branch Structure. UNISON has a clear branch structure to ensure that all members have their say. Each year the Annual General Meeting elects the Branch Officers and Stewards for the coming year. Local stewards are there to represent you at work and help find the answers to your problems.
A blockchain-based project cost data security and whole-process management method
This invention discloses a blockchain-based method for the security and full-process management of engineering cost data, comprising: Step 1: collecting engineering project cost data and performing event decomposition to generate event-level cost atomic units and associating them with cost documents; Step 2: constructing an event-level causal state graph and generating cost item nodes; Step 3: performing content addressing processing on cost documents to generate version nodes and establishing association relationships; Step 4: performing differential calculation on cost documents before and after revision to generate differential nodes; Step 5: establishing version-derived edges and differential-bearing edges based on an improved FileDAG structure and writing them into the approval and confirmation relationship; Step 6: establishing reference-locking edges and determining the current legitimate version node; Step 7: performing consistency verification and writing the data into the blockchain ledger or abnormal branch structure respectively. This invention achieves secure storage and full-process consistency management of engineering cost data.
