• On the effectiveness of the incremental approach to minimal chordal edge modification 

      Blair, Jean; Crespelle, Christophe Dominique (Journal article; Peer reviewed, 2021)
      Because edge modification problems are computationally difficult for most target graph classes, considerable attention has been devoted to inclusion-minimal edge modifications, which are usually polynomial-time computable ...
    • On the formation of coastal rogue waves in water of variable depth 

      Li, Yan; Chabchoub, Amin (Journal article; Peer reviewed, 2023)
      Wave transformation is an intrinsic dynamic process in coastal areas. An essential part of this process is the variation of water depth, which plays a dominant role in the propagation features of water waves, including a ...
    • On the formation of coastal rogue waves in water of variable depth 

      Li, Yan; Chabchoub, Amin (Journal article; Peer reviewed, 2023)
      Wave transformation is an intrinsic dynamic process in coastal areas. An essential part of this process is the variation of water depth, which plays a dominant role in the propagation features of water waves, including a ...
    • On the Groupiness and Intermittency of Oceanic Whitecaps 

      Malila, Mika Petteri; Thomson, J.; Breivik, Øyvind; Benetazzo, A.; Scanlon, B.; Ward, B. (Journal article; Peer reviewed, 2022)
      The enhancement of wave breaking activity during wave group passage is investigated using coherent field observations of the instantaneous sea surface elevation and whitecap coverage from platform-based stereo video ...
    • On the Hardness of Generalized Domination Problems Parameterized by Mim-Width 

      Bakkane, Brage I. K.; Jaffke, Lars (Journal article; Peer reviewed, 2022)
      For nonempty σ, ρ ⊆ ℕ, a vertex set S in a graph G is a (σ, ρ)-dominating set if for all v ∈ S, |N(v) ∩ S| ∈ σ, and for all v ∈ V(G) ⧵ S, |N(v) ∩ S| ∈ ρ. The Min/Max (σ,ρ)-Dominating Set problems ask, given a graph G and ...
    • On the High‐Energy Spectral Component and Fine Time Structure of Terrestrial Gamma Ray Flashes 

      Marisaldi, Martino; Galli, M.; Labanti, C.; Østgaard, Nikolai; Sarria, David; Cummer, S. A.; Lyu, F.; Lindanger, Anders; Campana, R.; Ursi, A.; Tavana, M; Fuschino, F.; Argan, A.; Trois, A.; Pittori, C.; Verrecchia, F (Journal article; Peer reviewed, 2019)
      Terrestrial gamma ray flashes (TGFs) are very short bursts of gamma radiation associated to thunderstorm activity and are the manifestation of the highest‐energy natural particle acceleration phenomena occurring on Earth. ...
    • On the Impact of a Streaming Oxygen Population on Collisionless Magnetic Reconnection 

      Kolstø, Håkon Midthun; Hesse, Michael; Norgren, Astrid Elisabet Cecilia; Tenfjord, Paul; Spinnangr, Susanne Flø; Kwagala, Norah Kaggwa (Journal article; Peer reviewed, 2020)
      Using 2.5-D Particle-In-Cell (PIC) simulations, we investigate how magnetotail reconnection is affected by a cold, streaming, oxygen plasma population, attributed to an ionospheric source, in the inflow region. As the ...
    • On the importance of parenting in externalizing disorders: an evaluation of indirect genetic effects in families 

      Eilertsen, Espen Moen; Gillespie Cheesman, Rosa Catherine; Ayorech, Ziada; Røysamb, Espen; Pingault, Jean-Baptiste; Njølstad, Pål Rasmus; Andreassen, Ole; Havdahl, Alexandra Karoline Saasen; McAdams, Tom A.; Torvik, Fartein Ask; Ystrøm, Eivind (Journal article; Peer reviewed, 2022)
      Background: Theoretical models of the development of childhood externalizing disorders emphasize the role of parents. Empirical studies have not been able to identify specific aspects of parental behaviors explaining a ...
    • On the IND-CCA1 Security of FHE Schemes 

      Hovd, Martha Norberg; Fauzi, Prastudy; Raddum, Håvard (Journal article; Peer reviewed, 2022)
      Fully homomorphic encryption (FHE) is a powerful tool in cryptography that allows one to perform arbitrary computations on encrypted material without having to decrypt it first. There are numerous FHE schemes, all of which ...
    • On the Influence of Sea Surface Temperature distributions on the Development of Extratropical Cyclones 

      Bui, Hai Hoang; Spengler, Thomas (Journal article; Peer reviewed, 2021)
      The sea surface temperature (SST) distribution can modulate the development of extratropical cyclones through sensible and latent heat fluxes. However, the direct and indirect effects of these surface fluxes, and thus the ...
    • On the Mainstream/Alternative Continuum: Mainstream Media Reactions to Right-Wing Alternative News Media 

      Nygaard, Silje (Journal article; Peer reviewed, 2021)
      Using the mainstream media as a starting point, this article argues that the ongoing changes in the mainstream/alternative continuum are not just dependent on how right-wing alternative news media relate to certain ...
    • On the maximum number of edges in planar graphs of bounded degree and matching number 

      Jaffke, Lars; Lima, Paloma T. (Journal article; Peer reviewed, 2023)
      We determine the maximum number of edges that a planar graph can have as a function of its maximum degree and matching number.
    • On the Modelling of Immiscible Viscous Fingering in Two Phase Flow in Porous Media 

      Sorbie, Ken; Al Ghafri, A.Y.; Skauge, Arne; Mackay, Eric (Journal article; Peer reviewed, 2020)
      Viscous fingering in porous media is an instability which occurs when a low-viscosity injected fluid displaces a much more viscous resident fluid, under miscible or immiscible conditions. Immiscible viscous fingering is ...
    • On the Origins of Open Ocean Oxygen Minimum Zones 

      Davila, Xabier; Olsen, Are; Lauvset, Siv Kari; McDonagh, Elaine Louise; Brakstad, Ailin; Gebbie, Geoffrey (Journal article; Peer reviewed, 2023)
      Recent work suggests that Oxygen Minimum Zones (OMZs) are sustained by the supply of oxygen-poor waters rather than the export of organic matter from the local surface layer and its subsequent remineralization inside OMZs. ...
    • On the parameterized complexity of deletion to H-free strong components 

      Neogi, Rian; Ramanujan, M.S.; Saurabh, Saket; Sharma, Roohani (Journal article; Peer reviewed, 2020)
      Directed Feedback Vertex Set (DFVS) is a fundamental computational problem that has received extensive attention in parameterized complexity. In this paper, we initiate the study of a wide generalization, the H-SCC Deletion ...
    • On the Parameterized Complexity of the Expected Coverage Problem 

      Fomin, Fedor; Ramamoorthi, Vijayaragunathan (Journal article; Peer reviewed, 2022)
      The MAXIMUM COVERING LOCATION PROBLEM (MCLP) is a well-studied problem in the field of operations research. Given a network with positive or negative demands on the nodes, a positive integer k, the MCLP seeks to find k ...
    • On the path towards universal coverage of hepatitis C treatment among people receiving opioid agonist therapy (OAT) in Norway: A prospective cohort study from 2013 to 2017 

      Aas, Christer Frode; Vold, Jørn Henrik; Skurtveit, Svetlana; Odsbu, Ingvild; Chalabianloo, Fatemeh; Økland, Jan-Magnus; Leiva, Rafael Alexander Mo; Vickerman, Peter; Johansson, Kjell Arne; Fadnes, Lars T. (Journal article; Peer reviewed, 2020)
      Objectives We aimed to calculate cumulative hepatitis C virus (HCV) treatment coverage among individuals enrolled in opioid agonist therapy (OAT) in Norway between 2013 and 2017 and to document the treatment transition to ...
    • On the political feasibility of climate change mitigation pathways: Is it too late to keep warming below 1.5° C? 

      Jewell, Jessica; Cherp, Aleh (Journal article; Peer reviewed, 2020)
      Keeping global warming below 1.5°C is technically possible but is it politically feasible? Understanding political feasibility requires answering three questions: (a) “Feasibility of what?,” (b) “Feasibility when and ...
    • On the potential for megathrust earthquakes and tsunamis off the southern coast of West Java and southeast Sumatra, Indonesia 

      Supendi, Pepen; Widiyantoro, Sri; Rawlinson, Nicholas; Yatimantoro, Tatok; Muhari, Abdul; Hanifa, Nuraini Rahma; Gunawan, Endra; Shiddiqi, Hasbi Ash; Imran, Iswandi; Anugrah, Suci Dewi; Daryono, Daryono; Prayitno, Bambang Setyo; Adi, Suko Prayitno; Karnawati, Dwikorita; Faizal, Lutfi; Damanik, Ruben (Journal article; Peer reviewed, 2022)
      High seismicity rates in and around West Java and Sumatra occur as a result of the Indo-Australian plate converging with and subducting beneath the Sunda plate. Large megathrust events associated with this process likely ...
    • On the Potential for Optical Detection of Microplastics in the Ocean 

      Koestner, Daniel Warren; Foster, Robert; El-Habashi, Ahmed (Journal article; Peer reviewed, 2023)