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    • The survival time of restorations is shortened in patients with dry mouth 

      Jukka, Leinonen; Hannu, Vähänikkilä; Ellinoora, Raninen; Laura, Järvelin; Ritva, Näpänkangas; Vuokko, Anttonen (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10)
      <i>Objectives:</i> The aim of this retrospective data collection study was to determine the effect size of dry mouth on the survival of restorations and teeth. <br><i>Methods:</i> The data were collected from the electronic patient files of City of Oulu Public Dental Services (Finland). Study population consisted of 71 dry mouth patients and 142 control patients. The survival of 3208 restorations ...
    • An Slow Motion Detection Algorithm using High Order Statistic Approach 

      Yuan, Fuqing; Lu, Jinmei (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-16)
      Motion detection is vital for consumer electronics and the Internet of things (IOT). For a scenario where the motion is slow and gentle, the resolution of the motion sensor is critical for the detection, while the algorithm development is another critical issue to differentiate the motion signal from noise measurement. This paper investigates the feasibility of using higher order statistics ...
    • Additive Manufacturing: Currently a Disruptive Supply Chain Innovation? 

      Engelseth, Per; Salman, Maryam; Mushtaq, Waqas; Awaleh, Fahad; Glavee-Geo, Richard (Journal article; Tidsskriftartikkel; Peer reviewed, 2021)
      Directs attention to additive manufacturing in a supply chain context. Analysis questions the degree it currently is a disruptive innovation. A case study consisting of interviews with 15 companies, including observations of some of these companies, providing a varied set of subcases. The research describes individual companies’ histories of using 3D printing tools, its current use and future ...
    • A conformational change of complement C5 is required for thrombin-mediated cleavage, revealed by a novel ex vivo human whole blood model preserving full thrombin activity 

      Nilsson, Per; Johnson, Christina; Quach, Huy Quang; Macpherson, Alex; Durrant, Oliver; Pischke, Soeren; Fure, Hilde; Landsem, Anne; Bergseth, Grete; Schjalm, Camilla; Haugaard-Kedström, Linda M.; Huber-Lang, Markus; van den Elsen, Jean; Brekke, Ole-Lars; Mollnes, Tom Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-15)
      Thrombin activation of C5 connects thrombosis to inflammation. Complement research in whole blood ex vivo necessitates anticoagulation, which potentially interferes with the inflammatory modulation by thrombin. We challenged the concept of thrombin as an activator of native C5 by analyzing complement activation and C5 cleavage in human whole blood anticoagulated with Gly-Pro-Arg-Pro (GPRP), a peptide ...
    • Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard 

      Farnsworth, Wesley Randall; Ingólfsson, Ólafur; Mannerfelt, Erik S.; Kalliokoski, Maarit H.; Gudmundsdottir, Esther Ruth; Retelle, Michael; Allaart, Lis; Brynjólfsson, Skafti; Furze, Mark; Hancock, Holt John; Kjær, Kurt H.; Pieńkowski, Anna J.; Schomacker, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-09)
      The distal deposition of tephra from explosive volcanism has the potential to geochronologically constrain sedimentary archives and landforms. With this technique, we constrain a Late Glacial glacier re-advance on Svalbard and suggest that glacioisostatic emergence rates during the Younger Dryas chronozone were at least three times greater than previous estimates. The identification of cryptotephra ...
    • Proximal to distal grain-size distribution of basin-floor lobes: A study from the Battfjellet Formation, Central Tertiary Basin, Svalbard 

      Spychala, Yvonne T.; Ramaaker, Thymen A. B.; Eggenhuisen, Joris T.; Grundvåg, Sten-Andreas; Pohl, Florian; Wróblewska, Sara (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-09)
      The grain-size distribution of sediment particles is an important aspect of the architecture of submarine fans and lobes. It governs depositional sand quality and reflects distribution of particulate organic carbon and pollutants. Documenting the grain-size distribution of these deep-marine sedimentary bodies can also offer us an insight into the flows that deposited them. Submarine lobes ...
    • Aspects on Recanalisation Therapies for Acute Ischaemic Stroke. Long-term survival after thrombolytic treatment with alteplase, endovascular thrombectomy for acute ischaemic stroke and recanalisation therapies for wake-up stroke 

      Roaldsen, Melinda Berg (Doctoral thesis; Doktorgradsavhandling, 2022-01-21)
      Stroke is a leading cause of death and disability worldwide. Approximately 85% of strokes are ischaemic strokes caused by blockage of a brain artery. Recanalisation therapies with thrombolysis (injection of drugs that dissolve the blood clot) and thrombectomy (mechanical removal of the blood clot) have revolutionised acute ischaemic stroke treatment during the last 25 years. Thrombolysis within ...
    • A comparison of contact charging and impact ionization in low-velocity impacts: implications for dust detection in space 

      Antonsen, Tarjei; Mann, Ingrid; Vaverka, Jakub; Nouzák, Libor; Fredriksen, Åshild (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-15)
      We investigate the generation of charge due to collision between projectiles with sizes below ∼1 µm and metal surfaces at speeds ∼0.1 to 10 km s<sup>−1</sup>. This corresponds to speeds above the elastic limit and well below speeds where volume ionization can occur. Impact charge production at these low to intermediate speeds has traditionally been described by invoking the theory of shock wave ...
    • Agenda navigation in consultations covering multiple topics. A qualitative case study from general practice 

      Guassora, Ann Dorrit; Johansen, May-Lill; Malterud, Kirsti (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-26)
      Objective - To explore how agenda navigation may be accomplished underway in consultations covering multiple topics, we identified and analyzed one GP’s communicative strategies.<p> <p>Design, setting, and subjects - A qualitative observational case study with linguistic microanalysis of an exemplary consultation between a female patient with diabetes and her male GP. We used speech act theory ...
    • Likt og ulikt - vraking av saltfisk i Norge og Spania 

      Nøstvold, Bjørg Helen; Hansen, Kristin Beate; Joensen, Sjúrður; Østli, Jens; Esaiassen, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-27)
      I dette arbeidet er det undersøkt om kvaliteten på saltfisk vurderes likt av norske saltfiskprodusenter og spanske importører. Det ble gjennomført spørreundersøkelse og intervjuer, samt praktisk kvalitetsvurdering av saltfisk. Både spørreundersøkelsen og kvalitetsvurderingen viste at de spanske kjøperne var strengere på kriteriene for å klassifisere fisken som primera enn de norske produsentene. Det ...
    • The Organic Grid: Sound and Timing in Electronic Dance Music 

      Brøvig-Hanssen, Ragnhild; Sandvik, Bjørnar; Aareskjold-Drecker, Jon Marius; Danielsen, Anne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-09)
      Researchers have argued that temporal microdeviations from the metric grid, such as those produced by musicians in performance, are crucial to making a musical rhythm groovy and danceable. It is curious, then, that the music currently dominating the dance floor, “electronic dance music” or EDM, is typically characterized by grid-based rhythms. But is such a “mechanistic,” grid-based aesthetic ...
    • Intra- and inter-temporal effort allocation and profit-maximizing strategy of trawl fishery 

      Alizadeh, Tannaz; Abe, Keita (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-04)
      Bottom trawlers are engaged in multi-species fisheries and fish for profit. In quota-regulated fisheries, intra- and inter-temporal substitutions of fishing effort is regarded as a key mechanisms that influences the profitability of the fishing portfolio. The feeding and spawning migration patterns of the available fish species in the fishing portfolio alter the bio-economic conditions of the different ...
    • Evolution of laparoscopic liver surgery: 20-year experience of a Norwegian high-volume referral center 

      Aghayan, Davit; Kazaryan, Airazat; Fretland, Åsmund Avdem; Røsok, Bård Ingvald; Barkhatov, Leonid; Lassen, Kristoffer; Edwin, Bjørn von Gohren (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-25)
      Background - Laparoscopic liver surgery has evolved to become a standard surgical approach in many specialized centers worldwide. In this study we present the evolution of laparoscopic liver surgery at a single high-volume referral center since its introduction in 1998.<p> <p>Methods - Patients who underwent laparoscopic liver resection (LLR) between August 1998 and December 2018 at the Oslo ...
    • Ion Cloud Expansion after Hypervelocity Dust Impacts Detected by the MMS Electric Probes in the Dipole Configuration 

      Vaverka, Jakub; Pavlů, Jiří; Nouzak, Libor; Šafránková, Jana; Nemecek, Sdenek; Antonsen, Tarjei; Mann, Ingrid; Lindqvist, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-08)
      Dust impact detection by electric field instruments is a well-established technique. On the other hand, not all aspects of signal generation by dust impacts are completely understood. We present a study of events related to dust impacts on the spacecraft body detected by electric field probes operating simultaneously in the monopole (probe-to-spacecraft potential measurement) and dipole (probe-to-probe ...
    • Measuring inventory turnover efficiency using stochastic frontier analysis: building materials and hardware retail chains in Norway. 

      Breivik, Jørgen; Larsen, Nils Magne; Thyholdt, Sverre Braathen; Myrland, Øystein (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-26)
      Operational efficiency in the retail business is vital in order to be profitable in a competitive environment. This paper investigates how environmental factors, firm size and time trends are linked to inventory performance. We use location data, demographic data and 16 years of financial accounting data from small and medium-sized home improvement retailers to explain inventory performance at a ...
    • Dynamic path finding method and obstacle avoidance for automated guided vehicle navigation in Industry 4.0 

      Dündar, Yigit Can (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-01)
      Within the scope of Industry 4.0, Automated Guided Vehicles (AGVs) are used to streamline logistics through the usage of efficient path finding methods. The current path finding methods in the industry rely on excessive usage of guidance in the shape of magnets, tapes or QR codes on the floor that the AGVs follow to reach their destinations. However, the current methods lack operational flexibility ...
    • Safe Learning for Control using Control Lyapunov Functions and Control Barrier Functions: A Review 

      Sadanandan Anand, Akhil; Seel, Katrine; Gjærum, Vilde Benoni; Håkansson, Anne; Robinson, Haakon; Saad, Aya (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-01)
      Real-world autonomous systems are often controlled using conventional model-based control methods. But if accurate models of a system are not available, these methods may be unsuitable. For many safety-critical systems, such as robotic systems, a model of the system and a control strategy may be learned using data. When applying learning to safety-critical systems, guaranteeing safety during learning ...
    • Risk of a permanent work-related disability pension after incident venous thromboembolism in Denmark: A population-based cohort study 

      Jørgensen, Helle; Horváth-Puhó, Erzsébet; Laugesen, Kristina; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne; Sørensen, Henrik Toft (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-31)
      Background - Long-term complications of venous thromboembolism (VTE) hamper physical function and impair quality of life; still, it remains unclear whether VTE is associated with risk of permanent work-related disability. We aimed to assess the association between VTE and the risk of receiving a permanent work-related disability pension and to assess whether this association was explained by ...
    • What is going on with Middle Eastern solar prices, and what does it mean for the rest of us? 

      Apostoleris, Harry; Al Ghaferi, Amal; Chiesa, Matteo (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-04)
      For the third time in a decade, solar energy pricing records are tumbling in the Persian Gulf. As each previous wave of new records was met with incredulity, only for these prices to become the new normal around the world within a few years, it would be unwise to once again dismiss low prices as unrepresentative outliers. In this study, we show how local conditions and global macroeconomic factors ...
    • Emotionally charged text classification with deep learning and sentiment semantic 

      Huan, Jeow Li; Sekh, Arif Ahmed; Quek, Chai; Prasad, Dilip K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-28)
      Text classification is one of the widely used phenomena in different natural language processing tasks. State-of-the-art text classifiers use the vector space model for extracting features. Recent progress in deep models, recurrent neural networks those preserve the positional relationship among words achieve a higher accuracy. To push text classification accuracy even higher, multi-dimensional ...