Browsing Fysisk institutt by Title

Now showing items 21-40 of 3667

  • A densely interconnected network for deep learning accelerated MRI 
    Ottesen, Jon André; Caan, Matthan; Groote, Inge Rasmus; Bjørnerud, Atle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    To improve accelerated MRI reconstruction through a densely connected cascading deep learning reconstruction framework. Materials and methods A cascading deep learning reconstruction framework (reference model) was modified ...
  • A first glimpse at the shell structure beyond 54Ca: Spectroscopy of 55K, 55Ca, and 57Ca 
    Koiwai, T.; Wimmer, K.; Doornenbal, P.; Obertelli, A.; Barbieri, C.; Duguet, T.; Holt, J.D.; Miyagi, T.; Navrátil, P.; Ogata, K.; Shimizu, N.; Somà, V.; Utsuno, Y.; Yoshida, K.; Achouri, N.L.; Baba, H.; Browne, F.; Calvet, D.; Château, F.; Chen, S.; Chiga, N.; Corsi, A.; Cortés, M.L.; Delbart, A.; Gheller, J.-M.; Giganon, A.; Gillibert, A.; Hilaire, C.; Isobe, T.; Kobayashi, T.; Kubota, Y.; Lapoux, V.; Liu, H.N.; Motobayashi, T.; Murray, I.; Otsu, H.; Panin, V.; Paul, N.; Rodriguez, W.; Sakurai, H.; Sasano, M.; Steppenbeck, D.; Stuhl, L.; Sun, Y.L.; Togano, Y.; Uesaka, T.; Yoneda, K.; Aktas, O.; Aumann, T.; Chung, L.X.; Flavigny, F.; Franchoo, S.; Gasparic, I.; Gerst, R.-B.; Gibelin, J.; Hahn, K.I.; Kim, D.; Kondo, Y.; Koseoglou, P.; Lee, J.; Lehr, C.; Linh, B.D.; Lokotko, T.; MacCormick, M.; Moschner, K.; Nakamura, T.; Park, S.Y.; Rossi, D.; Sahin, Eda; Söderström, P.-A.; Sohler, D.; Takeuchi, S.; Toernqvist, H.; Vaquero, V.; Wagner, V.; Wang, S.; Werner, V.; Xu, X.; Yamada, H.; Yan, D.; Yang, Z.; Yasuda, M.; Zanetti, L. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
  • A global spectral-Galerkin investigation of a Rayleigh–Taylor instability in plasma using an MHD–Boussinesq model 
    Piterskaya, Anna; Miloch, Wojciech Jacek; Mortensen, Mikael (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    This paper presents a new efficient algorithm based on the spectral-Galerkin numerical approximations complemented by a magnetohydrodynamics–Boussinesq model and a new solver for studying the development of a Rayleigh–Taylor ...
  • A Hierarchy of Non-Equilibrium Two-Phase Flow Models 
    Linga, Gaute; Flåtten, Tore Halsne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We review and extend a hierarchy of relaxation models for two-phase flow. The models are derived from the non-equilibrium Baer–Nunziato model, which is endowed with relaxation source terms to drive it towards equilibrium. ...
  • A high-granularity digital tracking calorimeter optimized for proton CT 
    Alme, Johan; Barnaföldi, Gergely Gábor; Barthel, Rene; Borshchov, Vyacheslav; Bodova, Tea; van den Brink, Anthony; Brons, Stephan; Chaar, Mamdouh; Eikeland, Viljar Nilsen; Feofilov, Grigory; Genov, Georgi; Grimstad, Silje; Grøttvik, Ola Slettevoll; Helstrup, Håvard; Herland, Alf Kristoffer; Hilde, Annar Eivindplass; Igolkin, Sergey; Keidel, Ralf; Kobdaj, Chinorat; van der Kolk, Naomi; Listratenko, Oleksandr; Malik, Qasim Waheed; Mehendale, Shruti Vineet; Meric, Ilker; Nesbø, Simon Voigt; Odland, Odd Harald; Papp, Gábor; Peitzmann, Thomas; Pettersen, Helge Egil Seime; Piersimoni, Pierluigi; Protsenko, Maksym; Rehman, Attiq Ur; Richter, Matthias; Røhrich, Dieter; Samnøy, Andreas Tefre; Seco, Joao; Setterdahl, Lena; Shafiee, Hesam; Skjolddal, Øistein Jelmert; Solheim, Emilie Haugland; Songmoolnak, Arnon; Sudár, Ákos; Sølie, Jarle Rambo; Tambave, Ganesh Jagannath; Tymchuk, Ihor; Ullaland, Kjetil; Underdal, Håkon Andreas; Varga-Kofarago, Monika; Volz, Lennart; Wagner, Boris; Widerøe, Fredrik Mekki; Xiao, RenZheng; Yang, Shiming; Yokoyama, Hiroki (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    A typical proton CT (pCT) detector comprises a tracking system, used to measure the proton position before and after the imaged object, and an energy/range detector to measure the residual proton range after crossing the ...
  • A highly active and reusable multicomponent high entropy metal oxide catalyst for nitroarenes hydrogenation 
    Soltani, Nayereh; Rahman, Jamil Ur; Almeida Carvalho, Patricia; Finstad, Terje Gunnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract It is well known that multicomponent catalysts can improve catalytic performance, however their rational design and precise control of catalytic activities by varying the composition of the elements is challenging. ...
  • A hybrid, asymmetric, linear Higgs factory based on plasma-wakefield and radio-frequency acceleration 
    Foster, Brian; D'Arcy, Richard; Lindstrøm, Carl A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The construction of an electron–positron collider 'Higgs factory' has been stalled for a decade, not because of feasibility but because of the cost of conventional radio-frequency (RF) acceleration. Plasma-wakefield ...
  • A measurement of the calorimeter response to single hadrons and determination of the jet energy scale uncertainty using LHC Run-1 pp-collision data with the ATLAS detector 
    Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdallah, J.; Abdinov, Ovsat Bahram oglu; Abeloos, Baptiste; Aben, Rosemarie; AbouZeid, Hass; Abraham, Nadine L.; Abramowicz, Halina; Abreu, Henso; Buanes, Trygve; Dale, Ørjan; Eigen, Gerald; Kastanas, Alex; Liebig, Wolfgang; Lipniacka, Anna; Martin dit Latour, Bertrand; Mæland, Steffen; Smestad, Lillian; Stugu, Bjarne; Yang, Zongchang; Zalieckas, Justas; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Feigl, Simon; Franconi, Laura; Garonne, Vincent; Gjelsten, Børge Kile; Gramstad, Eirik; Morisbak, Vanja; Nilsen, Jon Kerr; Ould-Saada, Farid; Pajchel, Katarina; Pedersen, Maiken; Raddum, Silje Hattrem; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Serfon, Cédric; Stapnes, Steinar; Strandlie, Are; Abreu, Rômulo F.; Acharya, Bobby S.; Adamczyk, Leszek; Adams, David; Adelman, Jareed; Adomeit, Stefanie; Adye, Tim; Affolder, Anthony Allen; ATLAS, Collaboration (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
  • A modified dividing local Gaussian processes algorithm for theoretical particle physics applications 
    Lohrmann, Timo; Kvellestad, Anders; De Bin, Riccardo (Chapter / Bokkapittel / PublishedVersion; Peer reviewed, 2022)
    We explore the use of dividing local Gaussian processes in the context of theoretical particle physics. We adapt an existing algorithm to the specific problem, trading some speed for a better precision. An intensive ...
  • A multiparameter model for non-invasive detection of hypoglycemia 
    Elvebakk, Ole; Tronstad, Christian; Birkeland, Kåre I.; Jenssen, Trond Geir; Bjørgaas, Marit Ragnhild Rokne; Gulseth, Hanne Løvdal; Kalvøy, Håvard; Høgetveit, Jan Olav; Martinsen, Ørjan Grøttem (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Objective: Severe hypoglycemia is the most serious acute complication for people with type 1 diabetes (T1D). Approximately 25% of people with T1D have impaired ability to recognize impending hypoglycemia, and nocturnal ...
  • A new approach to the inverse problem for current mapping in thin-film superconductors 
    Zuber, Johannes; Wells, Frederick S.; Fedoseev, Sergey A.; Johansen, Tom Henning; Rosenfeld, Anatoly B.; Pan, Alexey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    A novel mathematical approach has been developed to complete the inversion of the Biot-Savart law in one- and two-dimensional cases from measurements of the perpendicular component of the magnetic field using the well-developed ...
  • A new software implementation of the Oslo method with rigorous statistical uncertainty propagation 
    Midtbø, Jørgen Eriksson; Zeiser, Fabio; Lima, Erlend; Larsen, Ann-Cecilie; Tveten, Gry Merete; Guttormsen, Magne Sveen; Garrote, F. L. Bello; Kvellestad, Anders; Renstrøm, Therese (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The Oslo method comprises a set of analysis techniques designed to extract nuclear level density and average -decay strength function from a set of excitation-energy tagged -ray spectra. Here we present a new software ...
  • A node-splitting lattice spring model coupled with a J-integral formulation as a fracture criterion 
    Ye, Bo; Jettestuen, Espen; Malthe-Sørenssen, Anders (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    A global energy minimization criterion based on Griffith’s theory is introduced for the node-splitting lattice spring model. The fracture criterion is computed by both direct numerical simulations of energy release rate G ...
  • A Novel Method for Circuits of Perfect Electric Conductors in Unstructured Particle-in-Cell Plasma–Object Interaction Simulations 
    Marholm, Sigvald; Darian, Diako; Mortensen, Mikael; Miloch, Wojciech Jacek; Marchand, Richard (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    A novel numerical method has been developed that incorporates electrically conducting objects into particle-in-cell simulations of electrostatic plasma. The method allows multiple objects connected by voltage and current ...
  • A novel upward-looking hydroacoustic method for improving pelagic fish surveys 
    Baran, Roman; Juza, Tomas; Tušer, Michal; Balk, Helge; Blabolil, Petr; Cech, Martin; Drastik, Vladislav; Frouzová, Jaroslava; Jayasinghe, Asanka D; Koliada, Ievgen; Mrkvička, Tomáš; Muška, Milan; Ricard, Daniel; Sajdlová, Zuzana; Vejrik, Lukas; Kubečka, Jan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    For ethical reasons and animal welfare, it is becoming increasingly more important to carry out ecological surveys with a non-invasive approach. Information about fish distribution and abundance in the upper water column ...
  • A phase field crystal theory of the kinematics of dislocation lines 
    Skogvoll, Vidar; Angheluta, Luiza; Skaugen, Audun; Salvalaglio, Marco; Viñals, Jorge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We introduce a dislocation density tensor and derive its kinematic evolution law from a phase field description of crystal deformations in three dimensions. The phase field crystal (PFC) model is used to define the lattice ...
  • A Planar Cubic Derived from the Logarithm of the Dedekind η -Function 
    Lütken, Carsten Andrew (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
  • A preclinical model to investigate normal tissue damage following fractionated radiotherapy to the head and neck 
    Juvkam, Inga; Zlygosteva, Olga; Arous, Delmon; Galtung, Hilde; Malinen, Eirik; Søland, Tine Merete; Edin, Nina Frederike Jeppesen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Radiotherapy (RT) of head and neck (H&N) cancer is known to cause both early- and late-occurring toxicities. To better appraise normal tissue responses and their dependence on treatment parameters ...
  • A prognostic hypoxia gene signature with low heterogeneity within the dominant tumour lesion in prostate cancer patients 
    Salberg, Unn Beate; Skingen, Vilde Eide; Fjeldbo, Christina Sæten; Hompland, Tord; Ragnum, Harald Bull; Vlatkovic, Ljiljana; Hole, Knut Håkon; Seierstad, Therese; Lyng, Heidi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Background: Gene signatures measured in a biopsy have been proposed as hypoxia biomarkers in prostate cancer. We assessed a previously developed signature, and aimed to determine its relationship to hypoxia and its ...
  • A prospective study of high dose-rate brachytherapy or stereotactic body radiotherapy of Intra-prostatic recurrence: Toxicity and long term clinical outcome 
    Ryg, Una; Seierstad, Therese; Nilsen, Line; Hellebust, Taran Annette Paulsen; Djupvik, Linda Holth; Gustafson, Hilde; Hydal, Jørgen; Kishan, Amar U.; Hole, Knut Håkon; Lilleby, Wolfgang (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Background Up to half of patients with localized prostate cancer experience biochemical relapse within 10 years after definitive radiotherapy. The aim of this prospective study was to investigate the toxicity, dose to the ...