Now showing items 12053-12072 of 18313

    • Optimal reliability growth program for repairable and warranted products 

      Liu, Yiliu; Wang, Yukun (Chapter, 2019)
      Considering a two-dimensional and non-renewing free repair warranty (NFRW) policy, this paper proposes a modified reliability growth model to support the decision making of the manufacturer on the choice of a reliability ...
    • Optimal Scheduling of Plug-in Electric Vehicles in Distribution Systems Including PV, Wind and Hydropower Generation 

      Zaferanlouei, Salman; Ranaweera, Iromi; Korpås, Magnus; Farahmand, Hossein (Chapter, 2016)
      Integration of Plug-in Electric Vehicles (PEVs) and renewables pose substantial challenges on electricity distribution networks. The focus of this paper is to investigate the impact of large-scale PEVs penetration combined ...
    • Optimal Shaping of the MMC Circulating Currents for Preventing AC-side Power Oscillations from Propagating into HVDC Grids 

      Bergna-Diaz, Gilbert; Suul, Jon Are Wold; Berne, Erik; Vannier, Jean-Claude; Molinas Cabrera, Maria Marta (Journal article; Peer reviewed, 2019)
      A constrained optimization problem based on the Lagrange multipliers method is formulated to derive the circulating current references of Modular Multilevel Converters (MMC) directly in abc coordinates. The resulting ...
    • Optimal Sizing of Energy Storage Systems for Shipboard Applications 

      Alessandro, Boveri; Molinas Cabrera, Maria Marta; Federico, Silvestro; Espen, Skjong (Journal article; Peer reviewed, 2018)
      The recent worldwide effort on the environmental issue has led to new regulations on greenhouse gases emissions (GHG), both for land and marine applications. Nowadays, the extensive electrification of transportation systems ...
    • Optimal time decay of the Boltzmann equation with frictional force 

      Wang, Ying; Zaihong, Jiang (Journal article; Peer reviewed, 2011)
      In this paper, we use the combination of energy method and Fourier analysis to obtain the optimal time decay of the Boltzmann equation with frictional force towards equilibrium. Precisely speaking, we decompose the equation ...
    • Optimal timing of onshore wind repowering in Germany under policy regime changes: A real options analysis 

      Madlener, Reinhard; Glensk, Barbara; Gläsel, Lukas (Journal article; Peer reviewed, 2019)
      In this paper, we investigate capacity expansion, the technological development of wind turbine generators, and the merits of onshore wind repowering in Germany. We analyze the regulatory framework that is presently in ...
    • Optimal Use of Liquefied Natural Gas (LNG) Cold Energy in Air Separation Units 

      Kim, Donghoi; Giametta, Roxane Edith Helene; Gundersen, Truls (Peer reviewed; Journal article, 2018)
      One of the solutions to utilizing liquefied natural gas (LNG) cold energy at import terminals is supplying it to an air separation unit (ASU), replacing an external refrigeration process and reducing the power consumption. ...
    • Optimisation approach to target costing under uncertainty with application to ICT-service 

      Becker, Denis; Gaivoronski, Alexei A. (Journal article; Peer reviewed, 2017)
      Target costing is a modern approach applied during product development that defines cost targets for products and its components. These cost targets are driven by customer requirements and achievable revenues. The intention ...
    • Optimisation of chemical solution deposition of Indium Tin Oxide thin films 

      Sunde, Tor Olav Løveng; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2014-12-31)
      An environmentally friendly aqueous sol–gel process has been optimised to deposit indium tin oxide (ITO) thin films, aiming to improve the film properties and reduce the deposition costs. It was demonstrated how parameters ...
    • Optimised Deep Learning Features for Improved Melanoma Detection 

      Majtner, Tomas; Yildirim Yayilgan, Sule; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2018)
      In this article, we are addressing the question of effective usage of the feature set extracted from deep learning models pre-trained on ImageNet. Exploring this option will offer very fast and attractive alternative to ...
    • Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river 

      Fjeldstad, Hans-Petter; Alfredsen, Knut; Boissy, Thibault (Journal article; Peer reviewed, 2014)
      Studies on downstream passage of diadromous fishes in northern Europe are rare, and in Norway, the problem is strongly linked to demands for efficient hydropower production. The current study explored mitigating measures ...
    • Optimising multi-frame ADF-STEM for high-precision atomic-resolution strain mapping 

      Jones, Lewys; Wenner, Sigurd; Nord, Magnus Kristofer; Ninive, Per Harald; Løvvik, Ole Martin; Holmestad, Randi; Nellist, P.D. (Journal article; Peer reviewed, 2017)
      Annular dark-field scanning transmission electron microscopy is a powerful tool to study crystal defects at the atomic scale but historically single slow-scanned frames have been plagued by low-frequency scanning-distortions ...
    • Optimising surface d charge of AuPd nanoalloy catalysts for enhanced catalytic activity 

      Zhu, Xiaojuan; Qishui, Guo; Sun, Yafei; Chen, Shangjun; Wang, Jian-Qiang; Wu, Mengmeng; Fu, Wenzhao; Tang, Yanqiang; Duan, Xuezhi; Chen, De; Wan, Ying (Journal article; Peer reviewed, 2019)
      Understanding the catalytic mechanism of bimetallic nanocatalysts remains challenging. Here, we adopt an adsorbate mediated thermal reduction approach to yield monodispersed AuPd catalysts with continuous change of the ...
    • Optimism and sense of coherence in mothers and fathers of children with cerebral palsy participating in an intensified habilitation programme 

      Damgård, Randi; Sørensen, Kristian; Vestrheim, Ida Eline; Lerdal, Bjørn; Skranes, Jon Sverre; Rohde, Gudrun-Elin (Journal article; Peer reviewed, 2015)
      Background: To describe optimism and sense of coherence in mothers and fathers of preschool children with cerebral palsy (CP), before and after participation in an intensified habilitation program. Methods: Forty-five ...
    • Optimization in offshore supply vessel planning 

      Halvorsen-Weare, Elin Espeland; Fagerholt, Kjetil (Journal article; Peer reviewed, 2016)
      This paper considers the offshore supply vessel (OSV) planning problem, which consists of determining an optimal fleet size and mix of OSVs as well as their weekly routes and schedules for servicing offshore oil and gas ...
    • Optimization of a single expander LNG process 

      Austbø, Bjørn; Gundersen, Truls (Journal article; Peer reviewed, 2015)
      A single expander process with nitrogen as refrigerant has been optimized for liquefaction of natural gas. Comparisons have been made between a simplified process model assuming constant specific heat capacities and ideal ...
    • Optimization of an Absorption-Based Biogas Upgrading and Liquefaction Process 

      Hashemi, Sayed Ebrahim; Lien, Kristian Myklebust; Schnell, Sondre Kvalvåg; Austbø, Bjørn (Journal article; Peer reviewed, 2019)
      The present work proposes a methodology for optimization of a liquefied biomethane (LBM) production plant. The LBM production plant comprises amine-based absorption upgrading followed by a single expander refrigeration ...
    • Optimization of complex simulation models with stochastic gradient methods 

      Gaivoronski, Alexei A. (Chapter, 2018)
      We describe the structure of stochastic optimization solver SQG (Stochastic QuasiGradient), which implements stochastic gradient methods for optimization of complex stochastic simulation models. The solver finds the ...
    • Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes 

      He, Xuezhong (Journal article; Peer reviewed, 2017)
      Cellulose acetate (CA) hollow fibers were spun from a CA+ Polyvinylpyrrolidone (PVP)/N-methyl-2-pyrrolidone (NMP)/H2O dope solution and regenerated by deacetylation. The complete deacetylation time of 0.5 h was found at a ...
    • Optimization of Duplex Stability and Terminal Asymmetry for shRNA Design 

      Matveeva, OV; Kang, YB; Spiridonov, AN; Sætrom, Pål; Nemtsov, VA; Ogurtsov, AY; Nechipurenko, YD; Shabalina, SA (Journal article; Peer reviewed, 2010)
      Prediction of efficient oligonucleotides for RNA interference presents a serious challenge, especially for the development of genome-wide RNAi libraries which encounter difficulties and limitations due to ambiguities in ...