Browsing NTNU Open by Author "Johansen, Thomas"
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An Extendible Multimedia System to Create an Enriched and Common User Experience
Johansen, Thomas; Klock, Julian (Master thesis, 2008)On the Internet today, big amounts of multimedia content is available from many different sources, and metadata descriptions are essential when one want to find the media items that are related to each other. Different ... -
Attack scenarios in critical infrastructure - Remote control of the regional electricity grid
Johansen, Thomas (Master thesis, 2020)The regional electricity grid is a central and vital component in any national electricity distribution. This grid consist of multiple cyber-physical systems (CPS) and hence is prone to attacks against any of these components, ... -
Autonom baneplanlegging for auto dokking av ferjer
Johansen, Thomas (Master thesis, 2019)Hovedproblemet i denne oppgaven har vært å identifisere og utvikle en algoritme for baneplanlegging for auto dokking av autonome ferjer. Den foreslåtte planleggeren løser problemet som er ulineært optimeringsproblem og ... -
COLREGs-aware automatic docking for autonomous surface vessels
Nordhus, Henrik Rohde (Master thesis, 2023)I en æra hvor autonome systemer i økende grad former industrier og hverdagsliv, har området for maritim navigasjon opplevd en betydelig transformasjon. Denne masteroppgaven viser fremskrittene som er gjort i dokkingsprosedyrer, ... -
Cross-cultural adaptation and validation of the danish version of the 19-item return-to-work self-efficacy (RTWSE-19) questionnaire
Momsen, Anne-Mette Hedeager; Rosbjerg, Rikke; Stapelfeldt, Christina Malmose; Lund, Thomas; Jensen, Chris; Johansen, Thomas; Nielsen, Claus Vinther; Labriola, Merete (Peer reviewed; Journal article, 2016)Objectives The aim of this study was to perform a cross-cultural adaptation of the return-to-work self-efficacy (RTWSE-19) scale into Danish and test the reliability, validity and responsiveness of the final version. Methods ... -
Cross-cultural adaptation of the Work Role Functioning Questionnaire 2.0 to Norwegian and Danish
Johansen, Thomas; Lund, Thomas; Jensen, Chris; Momsen, Anne-Mette Hedeager; Eftedal, Monica; Øyeflaten, Irene Larsen; Braathen, Tore Norendal; Stapelfeldt, Christina Malmose; Amick, Benjamin; Labriola, Merete (Journal article; Peer reviewed, 2018)BACKGROUND: A healthy and productive working life has attracted attention owing to future employment and demographic challenges. OBJECTIVE: The aim was to translate and adapt the Work Role Functioning Questionnaire (WRFQ) ... -
Development and testing of a risk-based control system for autonomous ships
Johansen, Thomas; Blindheim, Simon André Johnsen; Torben, Tobias Valentin Rye; Utne, Ingrid Bouwer; Johansen, Tor Arne; Sørensen, Asgeir Johan (Journal article; Peer reviewed, 2023)This paper presents a method for designing and verifying a control system with risk-based decision-making capabilities to improve its intelligence and enhance the safe operation of autonomous systems. The decision-making ... -
Human-autonomy collaboration in supervisory risk control of autonomous ships
Johansen, Thomas; Utne, Ingrid Bouwer (Journal article; Peer reviewed, 2024)This paper presents a method for developing and testing a risk-based control system, as a first step towards including the human supervisor explicitly in the design of the system. The result is a control system with improved ... -
Occupational rehabilitation is associated with improvements in cognitive functioning
Johansen, Thomas; Jensen, Chris Jørgen; Eriksen, Hege Randi; Lyby, Peter Solvoll; Dittrich, Winand H.; Holsen, Inge N.; Jakobsen, Hanne; Øyeflaten, Irene Larsen (Journal article; Peer reviewed, 2019)Introduction: Occupational rehabilitation may be offered to workers on long-term sick leave who often report problems with cognitive functioning, anxiety, depression, pain, and reduced work ability. The empirical knowledge ... -
Ombygging av lagerrobot
Johansen, Thomas; Slenes, Per Olav; Mikalsen, Morten; Gossé, Sigurd; Aune, Dag (HiST AFT Rapport, Peer reviewed; Research report, 2010-01-20)Prosjektet gikk ut på å fornye/oppgradere én kran med ny PLS (Simatic S7) og samtidig teste ut drifts- og sikkerhetsfunksjoner. Dette gjør automatkranene mer kompatibel i dagens marked med tanke på drift og vedlikehold. ... -
Risk Analysis of Autonomous Ships
Johansen, Thomas; Utne, Ingrid Bouwer (Chapter, 2020)The main purpose of this paper is to address the feasibility of using the System Theoretic Process Analysis (STPA) for risk analysis and quantitative risk modeling of autonomous ships. The paper defines a set of requirements ... -
Risk-Based Control of Autonomous Surface Ship
Johansen, Thomas (Doctoral theses at NTNU;2024:174, Doctoral thesis, 2024)The last few decades have seen tremendous technological development in the maritime industry. Improvements in navigation systems such as Global Navigation Satellite Systems have reduced measurement error and uncertainty ... -
Seasonal and annual variation in the diet of brown bears Ursus arctos in the boreal forest of southcentral Sweden
Stenset, Nina Emilie; Lutnæs, Paul Antoni Nilsen; Bjarnadóttir, Valgerður; Dahle, Bjørn Steinar; Fossum, Kristin Høivik; Jigsved, Patrick; Johansen, Thomas; Neumann, Wiebke; Opseth, Ole; Rønning, Oddmund; Steyaert, Sam; Zedrosser, Andreas; Brunberg, Sven; Swenson, Jon (Journal article; Peer reviewed, 2016)Understanding a species' feeding ecology is essential for successful management and conservation, because food abundance can influence body mass, survival, reproductive success, movements, and habitat use. We describe ... -
Supervisory Risk Control of Autonomous Surface Ships
Johansen, Thomas; Utne, Ingrid Bouwer (Journal article; Peer reviewed, 2022)The objective of this paper is to develop online risk models that can be updated as conditions change, using risk as one metric to control an autonomous ship in operation. This paper extends and integrates the System ...