Journal Intelligent Service Robotics Issue 4/2020 Table of Contents ( 6 Articles ) 05-09-2020 | Original Research Paper | Issue 4/2020 Deployment and evaluation of a flexible human–robot collaboration model based on AND/OR graphs in a manufacturing environment Prajval Kumar Murali, Kourosh Darvish, Fulvio Mastrogiovanni 31-07-2020 | Original Research Paper | Issue 4/2020 Heading angle estimation using rotating magnetometer for mobile robots under environmental magnetic disturbances Feng Ye, Feng Shi, Yizong Lai, Xinjie Zhou, Kuo Li 29-07-2020 | Original Research Paper | Issue 4/2020 Multiple human trajectory prediction and cooperative navigation modeling in crowded scenes Akif Hacinecipoglu, E. Ilhan Konukseven, A. Bugra Koku 17-08-2020 | Original Research Paper | Issue 4/2020 A neural network-based approach for variable admittance control in human–robot cooperation: online adjustment of the virtual inertia Abdel-Nasser Sharkawy, Panagiotis N. Koustoumpardis, Nikos Aspragathos 28-10-2020 | Original Research Paper | Issue 4/2020 The telepresence avatar robot OriHime as a communication tool for adults with acquired brain injury: an ethnographic case study Stefan Vikkelsø, Tuyet-Hoa Hoang, Fransine Carrara, Karl Damkjær Hansen, Birthe Dinesen 09-06-2020 | Review Article | Issue 4/2020 Comprehensive review on brain-controlled mobile robots and robotic arms based on electroencephalography signals Majid Aljalal, Sutrisno Ibrahim, Ridha Djemal, Wonsuk Ko