Blar i Department of Mathematics på dokumenttype "Peer reviewed"

Viser treff 21-40 av 419

    • Association between Hyperacusis and Tinnitus 

      Cederroth, Christopher R; Lugo, Alessandra; Edvall, Niklas K.; Lazar, Andra; Lopez-Escamez, Jose Antonio; Bulla, Jan; Uhlen, Inger; Hoare, Darek J.; Baguley, David M.; Canlon, Barbara; Gallus, Silvano (Journal article; Peer reviewed, 2020-07)
      Many individuals with tinnitus report experiencing hyperacusis (enhanced sensitivity to sounds). However, estimates of the association between hyperacusis and tinnitus is lacking. Here, we investigate this relationship in ...

    • Associations between the number of children, age at childbirths and prevalence of chronic low back pain: the Nord-Trøndelag Health Study 

      Heuch, Ingrid; Heuch, Ivar; Hagen, Knut; Storheim, Kjersti; Zwart, John-Anker (Journal article; Peer reviewed, 2020)
      Background Associations between childbirths and subsequent risk of low back pain (LBP) have not been clarified. Changes in sex hormone levels or lumbar posture during pregnancy may have an impact on LBP later in life. The ...

    • Assuring the integrity of offshore carbon dioxide storage 

      Connelly, D.P.; Bull, J.M.; Flohr, A.; Schaap, A.; Koopmans, D.; Blackford, J.C.; White, P.R.; James, R.H.; Pearce, C.; Lichtschlag, A.; Achterberg, E.P.; de Beer, D; Roche, B.; Li, J.; Saw, K.; Alendal, Guttorm; Avlesen, Helge; Brown, R.; Borisov, S.M.; Böttner, C.; Cazenave, P.W.; Chen, B.; Dale, A.W.; Dean, M.; Dewar, M.; Esposito, M.; Gros, J.; Hanz, R.; Haeckel, M.; Hosking, B.; Huvenne, V.; Karstens, Jens; Le Bas, T.; Leighton, T.G.; Linke, P.; Loucaides, S.; Matter, J.M.; Monk, S.; Mowlem, M.C.; Oleynik, Anna; Omar, Abdirahman; Peel, K.; Provenzano, G.; Saleem, U.; Schmidt, M.; Schramm, B.; Sommer, S.; Strong, J.; Suarez, I. Falcon; Ungerboeck, B.; Widdicombe, S.; Wright, H.; Yakushev, Evgeniy (Journal article; Peer reviewed, 2022)
      Carbon capture and storage is a key mitigation strategy proposed for keeping the global temperature rise below 1.5 °C. Offshore storage can provide up to 13% of the global CO2 reduction required to achieve the Intergovernmental ...

    • Automorphism groups of pseudo H-type algebras 

      Furutani, Kenro; Markina, Irina (Journal article; Peer reviewed, 2021)
      In the present paper we determine the group of automorphisms of pseudo H-type Lie algebras, that are two step nilpotent Lie algebras closely related to the Clifford algebras Cl(Rr,s).

    • Avoiding misleading estimates using mtDNA heteroplasmy statistics to study bottleneck size and selection 

      Giannakis, Konstantinos; Broz, Amanda K.; Sloan, Daniel B.; Johnston, Iain (Journal article; Peer reviewed, 2023)
      Mitochondrial DNA heteroplasmy samples can shed light on vital developmental and genetic processes shaping mitochondrial DNA populations. The sample means and sample variance of a set of heteroplasmy observations are ...

    • Binary time series classification with Bayesian convolutional neural networks when monitoring for marine gas discharges 

      Gundersen, Kristian; Alendal, Guttorm; Oleynik, Anna; Blaser, Nello (Journal article; Peer reviewed, 2020-06-19)
      The world’s oceans are under stress from climate change, acidification and other human activities, and the UN has declared 2021–2030 as the decade for marine science. To monitor the marine waters, with the purpose of ...

    • Block preconditioners for mixed-dimensional discretization of flow in fractured porous media 

      Budisa, Ana; Hu, Xiaozhe (Journal article; Peer reviewed, 2021)
      In this paper, we are interested in an efficient numerical method for the mixed-dimensional approach to modeling single-phase flow in fractured porous media. The model introduces fractures and their intersections as ...

    • Brain solute transport is more rapid in periarterial than perivenous spaces 

      Vinje, Vegard; Bakker, Erik N. T. P.; Rognes, Marie Elisabeth (Journal article; Peer reviewed, 2021)
      Fluid flow in perivascular spaces is recognized as a key component underlying brain transport and clearance. An important open question is how and to what extent differences in vessel type or geometry affect perivascular ...

    • Brain Tumor Segmentation Based on Minimum Spanning Tree 

      Mayala, Simeon Sahani; Herdlevær, Ida Ajvazi; Haugsøen, Jonas Bull; Anandan, Shamundeeswari; Gavasso, Sonia; Brun, Morten (Journal article; Peer reviewed, 2022-03-11)
      In this paper, we propose a minimum spanning tree-based method for segmenting brain tumors. The proposed method performs interactive segmentation based on the minimum spanning tree without tuning parameters. The steps ...

    • Bridging the ensemble Kalman filter and particle filters: the adaptive Gaussian mixture filter 

      Stordal, Andreas Størksen; Karlsen, Hans A.; Nævdal, Geir; Skaug, Hans J.; Vallès, Brice (Peer reviewed; Journal article, 2010)
      The nonlinear filtering problem occurs in many scientific areas. Sequential Monte Carlo solutions with the correct asymptotic behavior such as particle filters exist, but they are computationally too expensive when working ...

    • Brill–Noether general K3 surfaces with the maximal number of elliptic pencils of minimal degree 

      Hoff, Michael; Knutsen, Andreas Leopold (Journal article; Peer reviewed, 2020)
      We explicitly construct Brill–Noether general K3 surfaces of genus 4, 6 and 8 having the maximal number of elliptic pencils of degrees 3, 4 and 5, respectively, and study their moduli spaces and moduli maps to the moduli ...

    • Brill–Noether theory of squarefree modules supported on a graph 

      Fløystad, Gunnar; Lohne, Henning (Peer reviewed; Journal article, 2013-05)
      We investigate the analogy between squarefree Cohen- Macaulay modules supported on a graph and line bundles on a curve. We prove a Riemann–Roch theorem, we study the Jacobian and gonality of a graph, and we prove Clifford’s ...

    • A Cahn-Hilliard-Biot system and its generalized gradient flow structure 

      Storvik, Erlend; Both, Jakub Wiktor; Nordbotten, Jan Martin; Radu, Adrian Florin (Journal article; Peer reviewed, 2022)
      In this work, we propose a new model for flow through deformable porous media, where the solid material has two phases with distinct material properties. The two phases of the porous material evolve according to a generalized ...

    • Capturing the coupled hydro-mechanical processes occurring during CO2 injection – example from In Salah 

      Bjørnarå, Tore Ingvald; Mathias, Simon A.; Nordbotten, Jan Martin; Park, Joonsang; Bohloli, Bahman (Peer reviewed; Journal article, 2014)
      At In Salah, CO2 is removed from the production stream of several natural gas fields and re-injected into a deep and relatively thin saline formation, in three different locations. The observed deformation on the surface ...

    • Cell identity and nucleo-mitochondrial genetic context modulate OXPHOS performance and determine somatic heteroplasmy dynamics 

      Lechuga-Vieco, Ana Victoria; Latorre-Pellicer, Ana; Johnston, Iain; Prota, Gennaro; Gileadi, Uzi; Justo-Méndez, Raquel; Acín-Pérez, Rebeca; Martínez-De-Mena, Raquel; Fernández-Toro, Jose María; Jimenez-Blasco, Daniel; Mora, Alfonso; Nicolás-Ávila, Jose A.; Santiago, Demetrio J.; Priori, Silvia G.; Bolaños, Juan Pedro; Sabio, Guadalupe; Criado, Luis Miguel; Ruíz-Cabello, Jesús; Cerundolo, Vincenzo; Jones, Nick S.; Enríquez, Jose Antonio (Journal article; Peer reviewed, 2020)
      Heteroplasmy, multiple variants of mitochondrial DNA (mtDNA) in the same cytoplasm, may be naturally generated by mutations but is counteracted by a genetic mtDNA bottleneck during oocyte development. Engineered heteroplasmic ...

    • Cell-centered finite volume discretizations for deformable porous media 

      Nordbotten, Jan Martin (Peer reviewed; Journal article, 2014-08-11)
      The development of cell-centered finite volume discretizations for deformation is motivated by the desire for a compatible approach with the discretization of fluid flow in deformable porous media. We express the conservation ...

    • Cellular and environmental dynamics influence species-specific extents of organelle gene retention 

      Garcia Pascual, Belen; Nordbotten, Jan Martin; Johnston, Iain (Journal article; Peer reviewed, 2023)
      Mitochondria and plastids rely on many nuclear-encoded genes, but retain small subsets of the genes they need to function in their own organelle DNA (oDNA). Different species retain different numbers of oDNA genes, and the ...

    • Collective mitochondrial dynamics resolve conflicting cellular tensions: From plants to general principles 

      Johnston, Iain George; Chustecki, Joanna M. (Journal article; Peer reviewed, 2023)
      Mitochondria play diverse and essential roles in eukaryotic cells, and plants are no exception. Plant mitochondria have several differences from their metazoan and fungal cousins: they often exist in a fragmented state, ...

    • Combinatorial description of jumps in spectral networks. 

      Frolova, Anastasia; Vasil'ev, Alexander (Peer reviewed; Journal article, 2017)
      We describe a graph parametrization of rational quadratic differen- tials with presence of a simple pole, whose critical trajectories form a network depending on parameters focusing on the network topological jumps. Obtained ...

    • A combined finite element–finite volume framework for phase-field fracture 

      Sargado, Juan Michael Uy Villanueva; Keilegavlen, Eirik; Berre, Inga; Nordbotten, Jan Martin (Journal article; Peer reviewed, 2021)
      Numerical simulations of brittle fracture using phase-field approaches often employ a discrete approximation framework that applies the same order of interpolation for the displacement and phase-field variables. In particular, ...