Browsing NTNU Open by Author "Strandlie, Are"
Now showing items 1-7 of 7
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A First-Principles Study of the Al (001)/Fe(0-11) Interface
Khalid, Muhammad Zeeshan; Friis, Jesper; Ninive, Per Harald; Marthinsen, Knut; Strandlie, Are (Journal article; Peer reviewed, 2018)Two phase Stefan problem was solved using analytical method in cylindrical domain. To solve governing equations Eigen conditions were formulated by using separation of variable technique. Eigenvalues of the eigencondition ... -
Ab-initio study of atomic structure and mechanical behaviour of Al / Fe intermetallic interfaces
Khalid, Muhammad Zeeshan; Friis, Jesper; Ninive, Per Harald; Marthinsen, Knut; Strandlie, Are (Journal article; Peer reviewed, 2020)First-principles virtual tensile and shear test calculations have been performed to Al(0 0 )//-AlFeSi(0 0 1) and Al(0 4)//Fe4Al13(1 0 ) interfaces by the ab initio pseudo potential density functional theory method. Work ... -
European Organisation for Nuclear Research (CERN) 13 Month Placement: activity report, July 2007 - August 2008
Buskenes, Jo Inge (Student paper, others, 2008)I attended the technical student program at CERN (The European Organization for Nuclear Research) from July 2007 to August 2008. More speci cally, I worked with the PHOS (ALICE Photon Spectrometer) detector, which is one ... -
Exploration and extension of an improved Riemann track fitting algorithm
Strandlie, Are; Frühwirth, Rudolf (Journal article; Peer reviewed, 2017)Recently, a new Riemann track fit which operates on translated and scaled measurements has been proposed. This study shows that the new Riemann fit is virtually as precise as popular approaches such as the Kalman filter ... -
Robust circle reconstruction with the Riemann fit
Fruhwirth, R; Strandlie, Are (Journal article; Peer reviewed, 2018)Finding and fitting circles from a set of points is a frequent problem in the data analysis of high-energy physics experiments. In a tracker immersed in a homogeneous magnetic field, tracks are close to perfect circles if ... -
Track parameter propagation through the application of a new adaptive Runge-Kutta-Nyström method in the ATLAS experiment
Lund, Espen; Bugge, Lars; Gavrilenko, Igor; Strandlie, Are (Journal article; Peer reviewed, 2009)In this paper we study several fixed step and adaptive Runge-Kutta methods suitable for transporting track parameters through an inhomogeneous magnetic field. Moreover, we present a new adaptive Runge-Kutta-Nyström method ... -
Transport of covariance matrices in the inhomogeneous magnetic field of the ATLAS experiment by the application of a semi-analytical method
Lund, Espen; Bugge, Lars; Gavrilenko, Igor; Strandlie, Are (Journal article; Peer reviewed, 2009)In this paper we study the transport of track parameter covariance matrices - the so-called error propagation - in the inhomogeneous magnetic field of the ATLAS experiment. The Jacobian elements are transported in parallel ...