Blar i Fakultet for informasjonsteknologi og elektroteknikk (IE) på tittel
Viser treff 12975-12994 av 20194
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Observation-Resistant Multifactor Multimodal Authentication
(Master thesis, 2010)ENGELSK: This thesis investigates the use of hand gestures as an additional modality in authentication schemes, to thwart the risk of observation (shoulder surfing) attacks. We used the accelerometer already embedded in ... -
Observations and Reflections on Teaching Electrical and Computer Engineering Courses
(Chapter, 2018)In this article, we make a number of observations and reflections based on our experience from many years of teaching courses in electrical and computer engineering bachelor programmes. We present important aspects of ... -
Observer and IMU-based Detection of Faults in Position Reference Systems and Gyrocompasses with Dual Redundancy in Dynamic Positioning
(Journal article; Peer reviewed, 2014)Faults in position reference systems and vessel sensors pose a serious hazard during dynamic positioning, and vessel drive-offs because of erroneous data may have dire consequences. The classification society standards ... -
Observer Backstepping Control for Variable Speed Wind Turbine
(Chapter; Peer reviewed, 2013)This paper presents an observer backstepping controller as feasible solution to variable speed control of wind turbines to maximize wind power capture when operating between cut-in and rated wind speeds. The wind turbine ... -
Observer based path following for underactuated marine vessels in the presence of ocean currents: A global approach
(Journal article; Peer reviewed, 2019)In this paper a solution to the problem of following a curved path in the presence of a constant unknown ocean current disturbance is presented. We introduce a path variable that represents the curvilinear abscissa on the ... -
Observer Based Path Following for Underactuated Marine Vessels in the Presence of Ocean Currents: A Local Approach
(Journal article; Peer reviewed, 2017)In this article a solution to the problem of following a curved path in the presence of a constant unknown ocean current disturbance is presented. The path is parametrised by a path variable that is used to propagate a ... -
Observer Based Sliding Mode Attitude Control: Theoretical and Experimental Results
(Journal article; Peer reviewed, 2011)In this paper we present the design of a sliding mode controller for attitude control of spacecraft actuated by three orthogonal reaction wheels. The equilibrium of the closed loop system is proved to be asymptotically ... -
Observer Design for a Class of Semilinear Hyperbolic PDEs with Distributed Sensing and Parametric Uncertainties
(Peer reviewed; Journal article, 2022)We study a class of heterodirectional semilinear hyperbolic partial differential equations, where the distributed state vector is partially measured. An observer estimating the unmeasured part of the state vector is designed. ... -
Observer Design For Fault-Tolerant Dynamic Positioning Using MEMS Inertial Sensors
(Doctoral theses at NTNU;2017:86, Doctoral thesis, 2017)The contribution of this disseration is threefold. First, it provides insight into the use of a certain type of nonlinear observers (NLO) for platform independent position, velocity and attitude estimation, exemplified by ... -
Observer Design for Mechanical Systems described by Semilinear Partial Differential Equations
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:86, Doctoral thesis, 2004)This doctoral thesis presents new analysis tool for observer design of flexible mechanical systems described by partial differential equations (PDEs). This work focuses especially on designing of natural observers. ... -
Observer design for underwater vehicles with position and angle measurement
(Journal article, 2006)In this paper we propose a new observer system for underwater vehicles. The main design objective behind this strategy is to reduce the destabilizing effect of the Coriolis and centripetal forces and moments in the observer. ... -
Observing and Analyzing Clinicians’ Information and Communication Behaviour: An Approach to Requirements Engineering for Mobile Health Information Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:220, Doctoral thesis, 2007)Advanced information systems have great potential for supporting clinicians in their patient-centered work. In order to meet the specific information and communication needs of healthcare professionals during a wide range ... -
Obstacle Detection and Avoidance in a 3D Environment
(Master thesis, 2022)Målet med denne masteroppgaven var å utvikle en metode for deteksjon og kollisjonsunngåelse av hindringer som f.eks. lave åpninger, hull eller små gjenstander på gulvet. En robot basert på nRF52840 DK ble nylig ferdigstilt, ... -
Obstacle detection and avoidance system for USV FishOtter
(Master thesis, 2022)Denne avhandlingen har som målsetning å utvikle og implementere en algoritme for kollisjonsunngåelse for et lite ubemannet marint fartøy (USV). Fartøyet brukes i et prosjekt ved Norges Teknisk-Naturvitenskapelige Universitet ... -
Obstacles and challenges identified by practitioners of non-formal science learning activities in Europe
(Peer reviewed; Journal article, 2022)Despite the increasing demand for non-formal science learning activities, few studies report on practitioners' perspectives and experiences with designing and implementing such activities worldwide. This paper focuses on ... -
Obstructions to the Surjectivity of the Thom Homomorphism
(Master thesis, 2020)Vi presenterer de grunnlegende egenskapene til stabil homotopiteori og generalisert kohomologi og konstruerer Thom-homomorfien fra kompleks kobordisme til singulær kohomologi. Deretter studerer vi denne homomorfien mer ... -
Obstructive sleep apnea detection using discrete wavelet transform-based statistical features
(Peer reviewed; Journal article, 2021)Motivation and objective Obstructive sleep apnea (OSA) is a sleep disorder identified in nearly 10% of middle-aged people, which deteriorates the normal functioning of human organs, notably that of the heart. Furthermore, ... -
Obtaining Numerical Solutions to Ordinary Differential Equations on Differentiable Manifolds with Lie Group Integrators
(Master thesis, 2021)Ordinære differensiallikningar (ODE-ar) er sentralt i fleire fagfelt; til dels mekanikk, finans, og det å lage vêrmeldingar. Dei velkjende Runge-Kutta metodane er ein av dei vanlegaste måtane å finne numeriske løysingar ... -
Obtaining precision-recall trade-offs in fuzzy searches of large email corpora
(Journal article; Peer reviewed, 2018)Fuzzy search is often used in digital forensic investigations to find words that are stringologically similar to a chosen keyword. However, a common complaint is the high rate of false positives in big data environments. ... -
Obtaining situational awareness using Wi-Fi geolocation
(Master thesis, 2020)Det overordnede målet for denne masteroppgaven var å undersøke om bruk av geolokaliseringsteknikker (basert på Wi-Fi og rogue-tilgangspunkter) kan være en praktisk måte å øke situasjonforståelse ved å lokalisere og spore ...