COVID-19 1 COVID-19 pandemic 1 Ethereum blockchain 1 History of engineering & technology 1 IPFS 1 Industry 4.0 1 Technology: general issues 1 automotive supply chains 1 blockchain 1 blockchain-enabled digital humanitarian networks (BT-DHN) 1 case study 1 cooperative advertisement 1 digitalization 1 humanitarian activities (HAs) 1 humanitarian organization (HO) 1 literature review 1 pandemic disruption 1 simulation 1 smart contracts 1 supply chain 1 supply chain management 1 sustainability 1 sustainable agricultural supply chain management 1 transparency 1 uncertain environment 1 variable demand 1 visibility 1 web design elements 1