Recent Submissions

  • Research on common-mode and dependent (CMD) outage events in power systems: a review 

    Papic, Milorad; Agarwal, Sudhir; Allan, Ron N.; Billinton, Roy; Dent, Chris J.; Ekisheva, Svetlana; Gent, Daniel; Jiang, Kai; Li, Wenyuan; Mitra, Joydeep; Pitto, Andrea; Schneider, Alexander; Singh, Chanan; Vadlamudi, Vijay Venu; Varghese, Matthew (Journal article; Peer reviewed, 2017)
    The purpose of this paper is to present a review of some fundamental concepts and practical applications in the area of common-mode and dependent (CMD) outage events in power systems. The paper is a result of ongoing ...
  • Extending OMPT to Support Grain Graphs 

    Langdal, Peder Voldnes; Jahre, Magnus; Muddukrishna, Ananya (Journal article, 2017)
    The upcoming profiling API standard OMPT can describe almost all profiling events required to construct grain graphs, a recent visualization that simplifies OpenMP performance analysis. We propose OMPT extensions that ...
  • Integrert presentasjon av sanntids datastrømmer - Ved hjelp av Health Layer 7 Fast Healthcare Interoperability Resource 

    Eggereide, Vegar (Master thesis, 2017)
    Når man høster kliniske data er det viktig at disse standardiseres slik at man oppnår interoperabilitet. Det bør man gjøre for å unngå fragmentering av informasjon og tap av kontekst. For å vise at det er hensiktsmessig ...
  • Frequency-dependent cable modelling for small-signal stability analysis of VSC-HVDC systems 

    Beerten, Jef; D'Arco, Salvatore; Suul, Jon Are Wold (Journal article; Peer reviewed, 2016)
    State-of-the-art time-domain models of power cables account for the frequency dependency of physical parameters to enable accurate transient simulations of high-voltage transmission schemes. Owing to their formulation, ...
  • Evaluating an image-based bidirectional reflectance distribution function measurement setup 

    Sole, Aditya Suneel; Farup, Ivar; Nussbaum, Peter; Tominaga, Shoji (Journal article; Peer reviewed, 2018)
    We evaluate an image-based multiangle bidirectional reflectance distribution function measurement setup by comparing it to measurements from two commercially available goniospectrophotometers. The image-based setup uses ...
  • Position Control in Inductive Power Transfer 

    Holmstrøm, Kristian (Master thesis, 2018)
    The objective of this thesis has been to investigate the use of position control in inductive power transfer and how it compares to the state-of-the-art methods for inductive power transfer control. In this thesis we have: ...
  • Influence of voltage harmonics on transformer no-load loss measurements and calculation of magnetization curves 

    Ramamurthy, Jayanth R.; Chiesa, Nicola; Hoidalen, Hans Kristian; Mork, Bruce Andrew Knut; Stenvig, Nils M.; Manty, Adam C. (Journal article; Peer reviewed, 2017)
    This paper investigates the voltage distortion phenomenon during no-load testing of transformers, its influence on no-load loss calculations, and a novel measurement technique that is unaffected by harmonics for obtaining ...
  • Solar Energy Prediction for Constrained IoT Nodes based on Public Weather Forecasts 

    Kraemer, Frank Alexander; Ammar, Doreid; Bråten, Anders Eivind; Tamkittikhun, Nattachart; Palma, David (Chapter, 2017)
    Solar power is important for many scenarios of the Internet of Things (IoT). Resource-constrained devices depend on limited energy budgets to operate without degrading performance. Predicting solar energy is necessary for ...
  • GDP: Using Dataflow Properties to Accurately Estimate Interference-Free Performance at Runtime 

    Jahre, Magnus; Eeckhout, Lieven (Journal article; Peer reviewed, 2018)
    Multi-core memory systems commonly share resources between processors. Resource sharing improves utilization at the cost of increased inter-application interference which may lead to priority inversion, missed deadlines ...
  • Safety, security and resilience of critical software ecosystems 

    Johnsen, Stig Ole; Stålhane, Tor (Chapter, 2017)
    A software ecosystem is defined as the dynamic evolution of systems on top of a common technological platform offering a set of software solutions and services. Software ecosystems has gained increased attention due to ...
  • Medium voltage load current interruption in presence of ablating polymer material 

    Taxt, Henning; Niayesh, Kaveh; Runde, Magne (Journal article; Peer reviewed, 2018)
    The expected abolishment of SF6-gas in medium voltage switchgear has prompted a search for replacements for the switch types that depend on SF6 to obtain the required capability, reliability, compactness and cost. Ablation ...
  • Exploring and Analyzing the Real Impact of Modern On-Package Memory on HPC Scientific Kernels 

    Li, Ang; Liu, Weifeng; Kristensen, Mads R. B.; Vinter, Brian; Wang, Hao; Hou, Kaixi; Marquez, Andres; Song, Shuaiwen Leon (Journal article; Peer reviewed, 2017)
    High-bandwidth On-Package Memory (OPM) innovates the conventional memory hierarchy by augmenting a new on-package layer between classic on-chip cache and off-chip DRAM. Due to its relative location and capacity, OPM is ...
  • Fast synchronization-free algorithms for parallel sparse triangular solves with multiple right-hand sides 

    Liu, Weifeng; Li, Ang; Hogg, Jonathan D; Duff, Iain S; Vinter, Brian (Journal article, 2017)
    The sparse triangular solve kernels, SpTRSV and SpTRSM, are important building blocks for a number of numerical linear algebra routines. Parallelizing SpTRSV and SpTRSM on today's manycore platforms, such as GPUs, is not ...
  • A multi-objective evolutionary algorithm for color image segmentation 

    Ripon, Kazi Shah Nawaz; Ali, Lasker Ershad; Newaz, Sarfaraz; Ma, Jinwen (Journal article; Peer reviewed, 2017)
    In this paper, we present a multi-objective segmentation approach for color images. Three objectives, overall deviation, edge value, and connectivity measure, are optimized simultaneously using a multi-objective evolutionary ...
  • Headache following head injury: a population-based longitudinal cohort study (HUNT) 

    Nordhaug, Lena Hoem; Hagen, Knut; Vik, Anne; Stovner, Lars Jacob; Follestad, Turid; Pedersen, Torunn; Gravdahl, Gøril Bruvik; Linde, Mattias (Journal article; Peer reviewed, 2018)
    Background Headache is the most frequent symptom following head injury, but long-term follow-up of headache after head injury entails methodological challenges. In a population-based cohort study, we explored whether ...
  • Scenario-based approaches for handling uncertainty in MPC for power system frequency control 

    Ersdal, Anne Mai; Imsland, Lars Struen (Journal article; Peer reviewed, 2017)
    A stochastic nonlinear model predictive controller (SNMPC) is designed for automatic generator control of a proxy of the Nordic power system, and it is compared with a multi-stage nonlinear model predictive controller ...
  • Generation system adequacy studies in the presence of wind energy resources 

    Bjørkeland, Mads (Master thesis, 2018)
    Variable renewable energy sources like wind power are in exponential growth worldwide. One of the major challenges regarding high penetration of wind energy in the power system is the degradation of generation adequacy due ...
  • Fabrication of a scaled MgB2 racetrack demonstrator pole for a 10 MW direct drive wind turbine generator 

    Magnusson, Niklas; Eliassen, J. C.; Abrahamsen, Asger B; Hellesø, Svein Magne; Runde, Magne; Nysveen, Arne; Moslått, Lars-Erik; Bjerkli, Jarle; King, Patrick (Journal article; Peer reviewed, 2018)
    Field windings made of MgB2 wires or tapes are considered for their potential to reduce volume, weight and cost of large offshore wind turbine generators. To gain experience of how to use this relatively new material in ...
  • The impact of Zero Energy Buildings on the Scandinavian energy system 

    Seljom, Pernille Merethe; Lindberg, Karen Byskov; Tomasgard, Asgeir; Doorman, Gerard L.; Sartori, Igor (Journal article; Peer reviewed, 2017)
    This paper investigates how an extensive implementation of net Zero Energy Buildings (ZEBs) affects cost-optimal investments in the Scandinavian energy system towards 2050. Analyses are done by a stochastic TIMES model ...
  • LTE in high capacity locations: - A case study of Lerkendal Stadium 

    Flobak, Einar (Master thesis, 2018)
    As the demand for mobile data is expected to keep on growing, the mobile network needs constant development. So, how should Telenor Norway build and invest in the mobile network in order to handle high capacity events in ...

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