Search for dissertations about: "surrogate model"

Showing result 1 - 5 of 53 swedish dissertations containing the words surrogate model.

  1. 1. Input Calibration, Code Validation and Surrogate Model Development for Analysis of Two-phase Circulation Instability and Core Relocation Phenomena

    University dissertation from Stockholm : Kungliga Tekniska högskolan

    Author : Viet-Anh Phung; KTH.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Reactor system code; input calibration; code validation; surrogate model; two-phase circulation flow instability; in-vessel core relocation; genetic algorithm; artificial neural network; Reaktorsystemkod; indata kalibrering; kodvalidering; surrogatmodell; två-fas cirkulationsflöde; instabilitet; härdrelokering i reaktortanken; genetisk algoritm; artificiella neurala nätverk; Physics; Fysik;

    Abstract : Code validation and uncertainty quantification are important tasks in nuclear reactor safety analysis. Code users have to deal with large number of uncertain parameters, complex multi-physics, multi-dimensional and multi-scale phenomena. READ MORE

  2. 2. Design and Optimization under Uncertainties A Simulation and Surrogate Model Based Approach

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Johan Persson; Linköpings universitet.; Linköpings universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis deals with development of complex products via modeling and simulation, and especially the use of surrogate models to decrease the computational efforts when probabilistic optimizations are performed. Many methods that can be used to perform probabilistic optimizations exist and this thesis strives to present and demonstrate the capabilities of a few of them. READ MORE

  3. 3. Efficient Optimization of Complex Products A Simulation and Surrogate Model Based Approach

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Johan Persson; Linköpings universitet.; Linköpings universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis investigates how to use optimization efficiently when complex products are developed. Modelling and simulation are necessary to enable optimization of products, but here it is assumed that verified and validated models of the products and their subsystems are available for the optimization. READ MORE

  4. 4. A trust-privacy model of customers' willingness to be profiled and to transact online theoretical model and empirical estimation

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Atanu Nath; [2007]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Industrial Marketing; Industriell marknadsföring;

    Abstract : Privacy concerns are cited to be on the rise due to intense personalization efforts by online firms. Alongside, trust placed in stores has been identified as a key component behind consumer willingness to transact online. READ MORE

  5. 5. Mathematical modelling for optimization of truck tyres selection

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Zuzana Sabartova; Göteborgs universitet.; Gothenburg University.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; simulation-based optimization; truck tyres selection; surrogate model; radial basis function interpolation; rolling resistance coefficient; combinatorial set of problem instances; global optimization;

    Abstract : This thesis, which consists of an introduction and three appended papers, concerns the optimal selection of tyres for a given vehicle configuration and an operating environment in which the vehicle is to be used. The optimization problem stems from an industrial project performed in cooperation between Chalmers University of Technology and Volvo Group Trucks Technology (GTT). READ MORE