This book constitutes the refereed proceedings of the 15th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems on Technological Innovation for Human-Centric Systems, DoCEIS 2024, held in Caparica, Portugal, during July 3-5, 2024. The 25 full papers presented were carefully reviewed and selected from 53 submissions. The papers cover the following topics: collaborative systems; human-robot collaboration; human-centric biomedical systems; cybersecurity and safety; energy management and sustainability; intelligent computational systems; electronic systems.