Sökning: "postprocessing"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet postprocessing.

  1. 1. Postprocessing Techniques and Adaptivity in the Finite Element Method

    Författare :Fethi Abdulwahab; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; error estimation; postprocessing; adaptivity; superconvergence; finite element;

    Sammanfattning : The Finite Element (FE) method is an approximate method and as such the accuracy of its solutions must be controlled to allow for a reliable application. This thesis deals with error estimation and improvements of the FE solutions based on superconvergent properties of the FE solution in certain points. LÄS MER

  3. 2. Adaptive Finite Element Procedures in Structural Dynamics

    Författare :Xiangdong Li; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element; h-adaptivity; Newmark method; structural dynamics; space-time; a posteriori; superconvergent patch recovery; postprocessing; automatic time-stepping; semidiscretization; error estimation; discontinuous Galerkin;

    Sammanfattning : This thesis deals with a posteriori error estimation and adaptivity in finite element procedures for the analysis of structural dynamic problems. First, error estimation and adaptivity for the Newmark time integration method are studied. LÄS MER

  4. 3. Jet-wind interaction in neutron star mergers

    Författare :Lorenzo Nativi; Stephan Rosswog; Jesper Sollerman; Felix Ryde; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; jets; kilonova; macronova; gamma-ray burst; neutron star merger; compact objects; Astronomy; astronomi;

    Sammanfattning : Besides being sources of gravitational waves, there has been evidence that neutron starmergers release neutron-rich material suitable for the production of heavy r-process nuclei.The radioactive decay of these freshly synthesised elements powers a rapidly evolvingthermal transient, the “macronova” (also known as “kilonova”). LÄS MER

  5. 4. Temperature measurements on silicon core fibers during CO2 laser processing

    Författare :Korbinian Mühlberger; Michael Fokine; Valerio Pruneri; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

    Sammanfattning : This thesis presents temperature measurements on silicon core optical fibers during CO2 laser processing. Silicon core fibers are a new type of fiber offering a unique platform to combine the optoelectronic properties of silicon and the possibilities of the optical fiber platform. LÄS MER

  7. 5. Tree Transformations in Inductive Dependency Parsing

    Författare :Jens Nilsson; Joakim Nivre; Pierre Nugues; Växjö universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inductive Dependency Parsing; Dependency Structure; Tree Transformation; Non-projectivity; Coordination; Verb Group; Language technology; Språkteknologi; Computer and Information Sciences Computer Science; Data- och informationsvetenskap;

    Sammanfattning : This licentiate thesis deals with automatic syntactic analysis, or parsing, of natural languages. A parser constructs the syntactic analysis, which it learns by looking at correctly analyzed sentences, known as training data. The general topic concerns manipulations of the training data in order to improve the parsing accuracy. LÄS MER