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    • On the ballistic perforation resistance of a sandwich structure with aluminium skins and aluminium foam core 

      Brekken, Kristoffer Aune; Bakk, Maria S.; Dey, Sumita; Berstad, Torodd; Reyes, Aase; Børvik, Tore (Peer reviewed; Journal article, 2023)
      Sandwich structures have proven to be excellent energy absorbents and are found in various protective solutions. In this study, an inhomogeneous aluminium foam was used as core material in a sandwich panel with skins of ...

    • On the Convenience of Speeding Up Lecture Recordings: Increased Playback Speed Reduces Learning 

      Ness, Ida; Sandnes, Frode Eika; Opdal, Kathinka (Lecture Notes in Computer Science;Volume 13117, Conference object, 2021-11-23)
      Audio and video lectures give students much freedom to study where and when they like. These digital media formats usually also give students flexibility to choose the playback speed. In this study we conducted a simple ...

    • On the Differences between Lithuanian and Norwegian Models of Social Welfare Provision 

      Guogis, Arvydas; Koht, Harald (Conference object, 2007)
      The article compares the Norwegian and Lithuanian models of welfare state provision and seeks to identify factors that may influence the choice of a particular model. This paper offers an overview of social policy in Norway ...

    • On the Energy Performance of Micro-Encapsulated Phase Change Material Enhanced Spackling with Night Ventilation 

      Aamodt, Andreas; Chaudhuri, Arnab; Madessa, Habtamu Bayera; Vik, Tor Arvid (Applied Sciences;volume 11, issue 4, Peer reviewed; Journal article, 2021-02-06)
      Phasechangematerial(PCM)isanattractivesolutionforimprovementofthermalperfor- mance in buildings, and have excited a vast amount of research in recent years. There are however practical challenges with ensuring adequate ...

    • On the performance of differential evolution variants in constrained structural optimization 

      Georgioudakis, Manolis; Plevris, Vagelis (Procedia Manufacturing;volume 44, Peer reviewed; Journal article, 2020-05-04)
      Constrained optimization is a highly important field of engineering as most real-world optimization problems are associated with one or several constraints. Such problems are often challenging to solve due to their complexity ...

    • On Time Reading Performance: A Comparison of the Clock Face and Digit Representations 

      Knapskog, Martine Amanda Dahl; Lines, Frida; Maalen-Johansen, Erik Semb; Eika, Evelyn; Sandnes, Frode Eika (Lecture Notes in Computer Science;, Chapter; Peer reviewed; Conference object; Journal article, 2023)
      Time plays an essential part of our lives. We are typically surrounded by two types of time representation, clock faces and digits. Previous work focused on children’s ability to read time, but adults’ ability to read time ...

    • One year comprehensive prospective follow-up of achalasia patients after peroral endoscopic myotomy 

      Evensen, Helge; Småstuen, Milada Cvancarova; Schulz, Anselm; Kristensen, Vendel Ailin; Larssen, Lene; Skattum, Jorunn Pettersen; Sandstad, Olav; Hauge, Truls; Medhus, Asle Wilhelm (Peer reviewed; Journal article, 2021)
      Peroral endoscopic myotomy (POEM) is an established therapy for achalasia, but outcome evaluation has often been limited to Eckardt score (ES). The present study was aimed to improve knowledge about outcome evaluation and ...

    • Only as Special as Necessary: Adapted Books in a Universal Design Perspective 

      Berget, Gerd (Studies in Health Technology and Informatics;Volume 282: Universal Design 2021: From Special to Mainstream Solutions, Chapter; Peer reviewed; Journal article, 2021)
      Providing access to high quality books for all types of readers is a premise for cultural democracy. Many people, however, have challenges reading mainstream books. There might be diverse reasons why people find reading ...

    • Ontology-Based Fault Tree Analysis Algorithms in a Fuzzy Environment for Autonomous Ships 

      Sahin, Bekir; Yazidi, Anis; Roman, Dumitru; Soylu, Ahmet (IEEE Access;Volume 9, 2021, Peer reviewed; Journal article, 2021-02-24)
      This study deals with fault tree analysis algorithms based on an ontology-based approach in a fuzzy environment. We extend fuzzy fault tree analysis by embedding ontology-based fault tree structures. The ontology-based ...

    • Open database analysis of scaling and spatio-temporal properties of power grid frequencies 

      Rydin Gorjao, Leonardo; Jumar, Richard; Maass, Heiko; Hagenmeyer, Veit; Yalcin, G. Cigdem; Kruse, Johannes; Timme, Marc; Beck, Christian; Witthaut, Dirk; Schäfer, Benjamin (Peer reviewed; Journal article, 2020)
      The electrical energy system has attracted much attention from an increasingly diverse research community. Many theoretical predictions have been made, from scaling laws of fluctuations to propagation velocities of ...

    • Open Problems in Fuzzing RESTful APIs: A Comparison of Tools 

      Zhang, Man; Arcuri, Andrea (Peer reviewed; Journal article, 2023)
      RESTful APIs are a type of web service that are widely used in industry. In the past few years, a lot of effort in the research community has been spent in designing novel techniques to automatically fuzz those APIs to ...

    • An Open-Source Framework for Modeling RC Shear Walls Using Deep Neural Networks 

      Solorzano, German; Plevris, Vagelis (Peer reviewed; Journal article, 2023)
      Reinforced concrete (RC) shear walls macroscopic models are simplified strategies able to simulate the complex nonlinear behavior of RC shear walls to some extent, but their efficacy and robustness are limited. In contrast, ...

    • Openness and the welfare state: risk and income effects in protection without protectionism 

      Barth, Erling; Finseraas, Henning; Kjelsrud, Anders; Moene, Karl Ove (Kalle) (Peer reviewed; Journal article, 2023)
      Have recent trends in globalization changed the positive link between trade openness and social insurance? The consensus view – that voters want better social insurance against income loss the more open the economy – is ...

    • Operator Performance Prediction based on Fuzzy Modeling Approach 

      Zhang, Jianhua; Yin, Zhong (IFAC-PapersOnLine;Volume 53, Issue 2, 2020, Peer reviewed; Journal article, 2021-04-14)
      In this paper, physiological signals were measured from five participants, each participating in two sessions of experiment with identical experimental procedure. A simulation platform, AutoCAMS (Automation-enhanced Cabin ...

    • Opioid prescriptions among Sami and non-Sami with chronic pain: The SAMINOR 2 Questionnaire Survey and the Norwegian Prescription Database 

      Eriksen, Astrid M.A.; Melhus, Marita; Schei, Berit; Skurtveit, Svetlana Ondrasova; Broderstad, Ann Ragnhild (Peer reviewed; Journal article, 2023)
      This study is the first to investigate the prevalence of filled opioid prescriptions among indigen- ous Sami people with self-reported chronic musculoskeletal pain (CMSP) and compare it with that of non-Sami living in ...

    • Oppholdstillatelse til selvstendig næringsdrivende kunstnere 

      Praino, Diego; Larsen, Kjetil Mujezinovic (Peer reviewed; Journal article, 2023)
      Denne artikkelen vurderer utlendingsforskriftens vilkår for opp-holdstillatelse for selvstendig næringsdrivende (utlendingen må være faglært, og det måvære et økonomisk grunnlag for driften) i lys av situasjonen for kunstnere ...

    • Opportunistic Treatment of Hepatitis C Infection Among Hospitalized People Who Inject Drugs (OPPORTUNI-C): A Stepped Wedge Cluster Randomized Trial 

      Midgard, Håvard; Malme, Kristian Braathen; Pihl, Charlotte Meinich; Berg-Pedersen, Riikka Mari; Tanum, Lars Håkon Reiestad; Klundby, Ingvild; Haug, Anne; Tveter, Ida Giæver; Bjørnestad, Ronny; Olsen, Inge Christoffer; Finbråten, Ane-Kristine; Dalgard, Olav (Journal article; Peer reviewed, 2023)
      Background. We aimed to evaluate the efficacy of opportunistic treatment of hepatitis C virus (HCV) infection among hospitalized people who inject drugs (PWID). Methods. We performed a pragmatic, stepped wedge cluster ...

    • Optimal charging strategy for intercity travels of battery electric vehicles 

      Wang, Yongxing; Bi, Jun; Guan, Wei; Lu, Chaoru; Xie, Dongfan (Peer reviewed; Journal article, 2021)
      ABSTRACT Limited driving range, long charging time and high charging costs affect the use of battery electric vehicles (BEVs) for intercity travels and often compel drivers to charge their vehicles more than once. This ...

    • Optimal Design Strategy of a Solar Reflector Combining Photovoltaic Panels to Improve Electricity Output: A Case Study in Calgary, Canada 

      Kim, Moon Keun; Abdulkadir, Khalid Osman; Liu, Jiying; Choi, Joon-Ho; Huiqing, Wen (Sustainability;Volume 13 / Issue 11, Peer reviewed; Journal article, 2021-05-28)
      This study explores the combination of photovoltaic (PV) panels with a reflector mounted on a building to improve electricity generation. Globally, PV panels have been widely used as a renewable energy technology. In order ...

    • Optimal placement of coupling elements of RC shear walls using endurance time method 

      Kheyroddin, Ali; Arabsarhangi, Reza; Shabani, Amirhosein; Kioumarsi, Mahdi (Procedia Structural Integrity;, Peer reviewed; Journal article, 2022)
      Shear wall is one of the common lateral bracing systems in reinforced concrete structures. A coupling beam can be used due to architectural limitations for connecting two or multiple separate walls. Coupling beams are the ...