Browsing NTNU Open by Author "Thieme, Christoph Alexander"
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A risk model for autonomous marine systems and operation focusing on human–autonomy collaboration
Thieme, Christoph Alexander; Utne, Ingrid Bouwer (Journal article; Peer reviewed, 2017)Autonomous marine systems, such as autonomous ships and autonomous underwater vehicles, gain increased interest in industry and academia. Expected benefits of autonomous marine system in comparison to conventional marine ... -
Assessing Ship Risk Model Applicability to Marine Autonomous Surface Ships
Thieme, Christoph Alexander; Utne, Ingrid Bouwer; Haugen, Stein (Journal article; Peer reviewed, 2018)Marine Autonomous Surface Ships (MASS) are tested in public waters. A requirement for MASS to be operated is that they should be at least as safe as conventional ships. Hence, this paper investigates how far the current ... -
Autonomous Systems Safety – State of the Art and Challenges
Ramos, Marilia Abilio; Thieme, Christoph Alexander; Utne, Ingrid Bouwer; Mosleh, Ali (Chapter, 2019)This whitepaper provided a starting point concerning some of the topics that were to be addressed at IWASS, including the current state of the art on autonomous systems development and challenges it faces. In the following ... -
A Bayesian Approach to Risk-Based Autonomy, with Applications to Contact-Based Drone Inspections
Rothmund, Sverre Velten; Thieme, Christoph Alexander; Utne, Ingrid Bouwer; Johansen, Tor Arne (Journal article; Peer reviewed, 2023)Enabling higher levels of autonomy while ensuring safety requires an increased ability to identify and handle internal faults and unforeseen changes in the environment. This article presents an approach to improve this ... -
A Bayesian Approach to Supervisory Risk Control of AUVs Applied to Under-Ice Operations
Bremnes, Jens Einar; Thieme, Christoph Alexander; Sørensen, Asgeir Johan; Utne, Ingrid Bouwer; Norgren, Petter (Peer reviewed; Journal article, 2020)Autonomous underwater vehicles (AUVs) are efficient sensor-carrying platforms for mapping and monitoring undersea ice. However, under-ice operations impose demanding requirements to the system, as it must deal with uncertain ... -
Challenges and Solutions for Autonomous Systems Safety–Findings from three International Workshops (IWASS)
Utne, Ingrid Bouwer; Thieme, Christoph Alexander; Ramos, Marilia Abilio; Mosleh, Ali (Chapter, 2023)Autonomous systems intend to be a stepping-stone towards safer and more efficient operations. Extensive mapping and monitoring of land, space, and the oceans, renewable energy harvesting and production, inspection of ... -
A continuous OT cybersecurity risk analysis and Mitigation process
Hanssen, Geir Kjetil; Thieme, Christoph Alexander; Bjarkø, Andrea Vik; Lundteigen, Mary Ann; Bernsmed, Karin Elisabeth; Jaatun, Martin Gilje (Chapter, 2023)Operational Technology (OT) systems are becoming increasingly software-driven and connected. This creates new digitalization opportunities but can also increase the risk of cyber security breaches than can have severe ... -
A generic approach to analysing failures in human – System interaction in autonomy
Ramos, Marilia Abilio; Thieme, Christoph Alexander; Utne, Ingrid Bouwer; Mosleh, Ali (Peer reviewed; Journal article, 2020)Autonomous systems operation will in the foreseeable future rely on the interaction between software, hardware and humans. Efficient interaction and communication between these agents are crucial for safe operation. ... -
Human-system concurrent task analysis for maritime autonomous surface ship operation and safety
Ramos, Marilia Abilio; Thieme, Christoph Alexander; Utne, Ingrid Bouwer; Mosleh, Ali (Journal article; Peer reviewed, 2019)Maritime Autonomous Surface Ships (MASS) are the subject of a diversity of projects and some are in testing phase. MASS will probably include operators working in a shore control center (SCC), whose responsibilities may ... -
Human-System Concurrent Task Analysis: An Application to Autonomous Remotely Operated Vehicle Operations
Thieme, Christoph Alexander; Ramos, Marilia Abilio; Yang, Xue (Chapter, 2020)Autonomous systems may operate with different Levels of Autonomy (LoA), from remote control to fully autonomous. The latter is not expected in the near or intermediate future for most systems. Thus, operation relies on the ... -
Human-System Interaction in Autonomy Method – a Structured Approach to Risk Monitoring
Ramos, Marilia Abilio; Thieme, Christoph Alexander (Chapter, 2019) -
Impact of cyber risk on the safety of the MilliAmpere2 Autonomous Passenger Ship
Amro, Ahmed Walid; Kavallieratos, Georgios; Louzis, Konstantinos; Thieme, Christoph Alexander (Peer reviewed; Journal article, 2020)The digitalization of the maritime sector is continuously growing, leading to increased automation, such as, the development of autonomous vessels. The Autonomous Passenger Ship (APS) is a characteristic instantiation of ... -
Incorporating software failure in risk analysis – Part 1: Software functional failure mode classification
Thieme, Christoph Alexander; Mosleh, Ali; Utne, Ingrid Bouwer; Hegde, Jeevith (Peer reviewed; Journal article, 2020)Advanced technological systems consist of a combination of hardware and software, and they are often operated or supervised by a human operator. Failures in software-intensive systems may be difficult to identify, analyze, ... -
Incorporating software failure in risk analysis––Part 2: Risk modeling process and case study
Thieme, Christoph Alexander; Mosleh, Ali; Utne, Ingrid Bouwer; Hegde, Jeevith (Journal article; Peer reviewed, 2020)The advent of autonomous cars, drones, and ships, the complexity of these systems is increasing, challenging risk analysis and risk mitigation, since the incorporation of software failures intro traditional risk analysis ... -
Intelligence and Decision Support
Thieme, Christoph Alexander; Ramos, Marilia Abilio (Chapter, 2019) -
Preliminary hazard analysis of a small harbor passenger ferry – results, challenges and further work
Thieme, Christoph Alexander; Guo, Chuanqi; Utne, Ingrid Bouwer; Haugen, Stein (Journal article; Peer reviewed, 2019)The Norwegian University of Science and Technology (NTNU), is currently designing a small autonomous passenger ferry for up to 12 passengers. The ferry will bridge a harbor channel in Trondheim, Norway. This paper presents ... -
Proceedings of the 4th International Workshop on Autonomous Systems Safety
Correa-Jullian, Camila; Grimstad, Joachim; Dugan, Spencer August; Ramos, Marilia Abilio; Thieme, Christoph Alexander; Morozov, Andrey; Utne, Ingrid Bouwer; Mosleh, Ali (Research report, 2023) -
Proceedings of the First International Workshop on Autonomous Systems Safety
Ramos, Marilia Abilio; Thieme, Christoph Alexander; Utne, Ingrid Bouwer; Mosleh, Ali (Book, 2019) -
Proceedings of the International Workshop on Autonomous Systems Safety 2021
Thieme, Christoph Alexander; Ramos, Marilia A; Utne, Ingrid Bouwer; Mosleh, Ali (Research report, 2021)The International Workshop for Autonomous System Safety (IWASS) is a joint effort by the B. John Garrick Institute for the Risk Sciences at the University of California Los Angeles (UCLA) and the Norwegian University of ... -
Reliability Analysis of Shore-to-Ship Fast Charging Systems
Karimi, Siamak; Zadeh, Mehdi; Suul, Jon Are Wold; Thieme, Christoph Alexander (Chapter, 2021)This paper presents a reliability assessment of Shore-to-Ship Sharging (S2SC) systems with focus on the two most common topologies of ac and dc charging. In the proposed reliability model, the Markov chain and reliability ...