• Variable Speed Hydropower Conversion and Control 

      Reigstad, Tor Inge; Uhlen, Kjetil (Peer reviewed; Journal article, 2020)
      The objective of this paper is to develop and analyse a variable speed hydropower (VSHP) model that can aid the design of controllers that maximize the utilization of power plant for the provision of ancillary services, ...
    • Variable speed hydropower plant with virtual inertia control for provision of fast frequency reserves 

      Reigstad, Tor Inge; Uhlen, Kjetil (Journal article; Peer reviewed, 2020)
    • Variable step size commutator free Lie group integrators 

      Curry, Charles Henry Alexander; Owren, Brynjulf (Journal article; Peer reviewed, 2019)
      We introduce variable step size commutator free Lie group integrators, where the error control is achieved using embedded Runge–Kutta pairs. These are schemes for the integration of initial value problems posed on homogeneous ...
    • Variable V2 in Norwegian Heritage Language: An effect of crosslinguistic influence? 

      Westergaard, Marit; Lohndal, Terje; Lundquist, Bjørn (Peer reviewed; Journal article, 2021)
      This paper discusses possible attrition of verb second (V2) word order in Norwegian heritage language by investigating a corpus of spontaneous speech produced by 50 2nd–4th generation heritage speakers in North America. ...
    • Variable-speed operation and pressure pulsations in a Francis turbine and a pump-turbine 

      Iliev, Igor; Trivedi, Chirag; Agnalt, Einar; Dahlhaug, Ole Gunnar (Journal article; Peer reviewed, 2019)
      The paper presents result from model measurements of the efficiency and pressure pulsation intensities for two low-specific-speed hydraulic turbines operated at variable speed, namely, one splitter-bladed Francis turbine ...
    • Variable-speed operation of hydropower plants: past, present, and future 

      Valavi, Mostafa; Nysveen, Arne (Journal article; Peer reviewed, 2018)
      In This article, the state of the art in the variable-speed operation of hydropower plants is reviewed, with a focus on pumped-storage hydropower. Relevant literature is reviewed to address the benefits of variable-speed ...
    • Variance-Based Exploration for Learning Model Predictive Control 

      Seel, Katrine; Bemporad, Alberto; Gros, Sebastien Nicolas; Gravdahl, Jan Tommy (Peer reviewed; Journal article, 2023)
      The combination of model predictive control (MPC) and learning methods has been gaining increasing attention as a tool to control systems that may be difficult to model. Using MPC as a function approximator in reinforcement ...
    • Variants associated with HHIP expression have sex-differential effects on lung function 

      Fawcett, Katherine A.; Obeidat, Ma'en; Melbourne, Carl; Shrine, Nick; Guyatt, Anna L.; John, Catherine; Luan, Jian'an; Richmond, Anne; Moksnes, Marta R.; Granell, Raquel; Weiss, Stefan; Imboden, Medea; May-Wilson, Sebastian; Hysi, Pirro; Boutin, Thibaud S.; Portas, Laura; Flexeder, Claudia; Harris, Sarah E.; Wang, Carol A.; Lyytikäinen, Leo-Pekka; Palviainen, Teemu; Foong, Rachel E.; Keidel, Dirk; Minelli, Cosetta; Langenberg, Claudia; Bossé, Yohan; Berge, Maarten Van den; Sin, Don D.; Hao, Ke; Campbell, Archie; Porteous, David; Padmanabhan, Sandosh; Smith, Blair H.; Evans, David M.; Ring, Sue; Langhammer, Arnulf; Hveem, Kristian; Willer, Cristen J.; Ewert, Ralf; Stubbe, Beate; Pirastu, Nicola; Klaric, Lucija; Joshi, Peter K.; Patasova, Karina; Massimo, Mangino; Polasek, Ozren; Starr, John M.; Karrasch, Stefan; Strauch, Konstantin; Meitinger, Thomas; Rudan, Igor; Rantanen, Taina; Pietiläinen, Kirsi; Kähönen, Mika; Raitakari, Olli T.; Hall, GL; Sly, Peter D.; Pennell, CE; Kaprio, Jaakko; Lehtimäki, Terho; Vitart, Veronique; Deary, Ian J.; Jarvis, Deborah; Wilson, JF; Spector, Tim; Probst-Hensch, Nicole; Wareham, Nick; Völzke, Henry; Henderson, John; Strachan, David P.; Brumpton, Ben Michael; Hayward, Caroline; Hall, Ian P.; Tobin, Martin D.; Wain, Louise V. (Peer reviewed; Journal article, 2021)
      Background: Lung function is highly heritable and differs between the sexes throughout life. However, little is known about sex-differential genetic effects on lung function. We aimed to conduct the first genome-wide ...
    • Variants in ELL2 influencing immunoglobulin levels associate with multiple myeloma 

      Swaminathan, Bhairavi; Thorleifsson, Gudmar; Jöud, Magnus; Ali, Mina; Johnsson, Ellinor; Ajore, Ram; Sulem, Patrick; Halvarsson, Britt-Marie; Eyjolfsson, Gudmundur I.; Haraldsdottir, Vilhelmina; Hultman, Christina; Ingelsson, Erik; Kristinsson, Sigurdur Y; Kähler, Anna Katarina; Lenhoff, Stig; Masson, Gisli; Mellqvist, Ulf-Henrik; Månsson, Robert; Nelander, Sven; Olafsson, Isleifur; Sigurdardóttir, Olöf Gudrun; Steingrimsdottir, Hlif; Vangsted, Annette; Vogel, Ulla; Waage, Anders; Nahi, Hareth; Gudbjartsson, Daniel F.; Rafnar, Thorunn; Turesson, Ingemar; Gullberg, Urban; Stefansson, Kari; Hansson, Markus; Thorsteinsdottir, Unnur; Nilsson, Björn (Journal article; Peer reviewed, 2015)
      Multiple myeloma (MM) is characterized by an uninhibited, clonal growth of plasma cells. While first-degree relatives of patients with MM show an increased risk of MM, the genetic basis of inherited MM susceptibility is ...
    • Variation across individuals and domains in Norwegian heritage language 

      Lundquist, Bjørn; Anderssen, Merete; Lohndal, Terje; Westergaard, Marit (Peer reviewed; Journal article, 2020)
      This paper investigates spontaneous production from 50 speakers of Norwegian heritage language in the Corpus of American Nordic Speech and studies the interplay between four linguistic properties: possessives and double ...
    • Variation and change in Norwegian wh-questions: The role of the complementizer som 

      Westergaard, Marit; Vangsnes, Øystein A; Lohndal, Terje (Journal article; Peer reviewed, 2017)
      In this paper, we consider variation in Verb Second (V2) word order in wh-questions across Norwegian dialects by investigating data from the Nordic Syntax Database (NSD), which consists of acceptability judgments collected ...
    • Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales 

      Keogan, Katharine; Daunt, Francis; Wanless, Sarah; Phillips, Richard A.; Alvarez, David; Anker-Nilssen, Tycho; Barrett, Robert; Bech, Claus; Becker, Peter H.; Berglund, Per-Arvid; Bouwhuis, Sandra; Burr, Zofia M.; Chastel, Olivier; Christensen-Dalsgaard, S*; Christensen-Dalsgaard, Signe; Descamps, Sebastien; Diamond, Tony; Elliott, Kyle; Erikstad, Kjell E.; Harris, Mike; Hentati-Sundberg, Jonas; Heubeck, Martin; Kress, Stephen W.; Langset, Magdalene; Lorentsen, Svein-Håkon; Major, Heather L.; Mallory, Mark; Mellor, Mick; Miles, Will T.S.; Moe, Børge; Mostello, Carolyn; Newell, Mark; Nisbet, Ian; Reiertsen, Tone Kristin; Rock, Jennifer; Shannon, Paula; Varpe, Øystein; Lewis, Sue; Phillimore, Albert B. (Peer reviewed; Journal article, 2022)
      1. Timing of breeding, an important driver of fitness in many populations, is widely studied in the context of global change, yet despite considerable efforts to identify environmental drivers of seabird nesting phenology, ...
    • Variation for Piecewise Constant Functions on Triangular Meshes with Applications in Imaging 

      Baumgartner, Lukas; Bergmann, Ronny; Herzog, Roland; Schmidt, Stephan; Vidal Núñez, José (Journal article, 2023)
      We propose a novel discrete concept for the total generalized variation (TGV), which was originally derived to reduce the staircasing effect in classical total variation regularization, in image denoising problems. We ...
    • Variation in adjunct islands: The case of Norwegian 

      Bondevik, Ingrid; Kush, Dave Whitney; Lohndal, Terje (Peer reviewed; Journal article, 2020)
      Finite adjunct clauses are often assumed to be among the strongest islands for filler–gap dependency creation cross-linguistically, but Kush, Lohndal & Sprouse (2019) found experimental evidence suggesting that finite ...
    • Variation in antibiotic consumption in very preterm infants-a 10 year population-based study 

      Huncikova, Zuzana; Stensvold, Hans Jørgen; Øymar, Knut Asbjørn Alexander; Vatne, Anlaug; Lang, Astri Maria; Støen, Ragnhild; Brigtsen, Anne Karin; Moster, Dag; Eriksen, Beate Horsberg; Selberg, Terje Reidar; Rønnestad, Arild Erland; Klingenberg, Claus (Peer reviewed; Journal article, 2023)
      Objectives Wide variations in antibiotic use in very preterm infants have been reported across centres despite similar rates of infection. We describe 10 year trends in use of antibiotics and regional variations among ...
    • Variation in caries treatment proposals among dentists in Norway: the best interest of the child 

      Rønneberg, Anne; Skaare, Anne B; Hofmann, Bjørn; Espelid, Ivar (Journal article; Peer reviewed, 2017)
      Aim To explore variation in treatment-related-decisions for severe caries in children among dentists in the Public Dental Service (PDS) in Norway. It was also to evaluate the treatment choices in relation to the best ...
    • Variation in d13C and d15N values of mothers and their calves across southern right whale nursery grounds: the effects of nutritional stress? 

      Carroll, Emma L.; Dunshea, Glenn; Ott, Paulo H.; Valenzuela, Luciano O.; Baker, C. S.; Childerhouse, Simon J.; Gaggiotti, Oscar; Flores, Paulo A. C.; Groch, Katia Regina; Gröcke, Darren R.; Hindell, Mark A.; Lundquist, David; Oliveira, Larrissa R.; Rowntree, Victoria; Sironi, Mariano; Newsome, Seth D. (Peer reviewed; Journal article, 2021)
      Southern right whales (SRW) are capital breeders that use stored energy reserves to sustain themselves and their calves on nursery areas. With successful calving events declining in some SRW populations, it has been ...
    • Variation in first-generation L1 deictic systems: Language attrition and bilingualism effects 

      Vulchanova, Mila Dimitrova; Collier, Jacqueline; Guijarro-Fuentes, Pedro; Vulchanov, Valentin (Peer reviewed; Journal article, 2022)
      Aims and Objectives: This study explored the extent to which bilingual language exposure and practice might alter the way in which bilingual first-generation adult speakers use deictic demonstratives in their first language ...
    • Variation in general supportive and preventive intensive care management of traumatic brain injury: a survey in 66 neurotrauma centers participating in the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study 

      Huijben, Jilske A.; Volovici, Victor; Cnossen, Maryse C.; Haitsma, Iain K.; Stocchetti, Nino; Maas, Andrew I. R.; Menon, David K.; Ercole, Ari; Citerio, Giuseppe; Nelson, David; Polinder, Suzanne; Steyerberg, Ewout W.; Lingsma, Hester F.; van der Jagt, Mathieu; Vik, Anne; Andelic, Nada; Andreassen, Lasse; Anke, Audny; Frisvold, Shirin; Helseth, Eirik; Roise, Olav; Skandsen, Toril; Håberg, Asta; Røe, Cecilie (Journal article; Peer reviewed, 2018)
      Background General supportive and preventive measures in the intensive care management of traumatic brain injury (TBI) aim to prevent or limit secondary brain injury and optimize recovery. The aim of this survey was to ...
    • Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation 

      Araya-Ajoy, Yimen; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Pepke, Michael Le; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Wright, Jonathan (Journal article; Peer reviewed, 2021)
      Generation time determines the pace of key demographic and evolutionary processes. Quantified as the weighted mean age at reproduction, it can be studied as a life-history trait that varies within and among populations and ...