Sökning: "DFG"

Hittade 3 uppsatser innehållade ordet DFG.

  1. 1. Dispersion management and characterization of ultrashort laser pulses for the optimization of parametric processes

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Axel Elfving; [2019]
    Nyckelord :frequency resolved optical gating; optical parametric amplification; difference frequency generation; nonlinear optics; laser pulse compression; lasers; optics; Technology and Engineering; Physics and Astronomy;

    Sammanfattning : This thesis set out to continue the development of a short-wave infrared (SWIR) optical parametric amplifier (OPA). The system is based on a Yb-ber chirped pulse amplification (CPA) laser delivering 400 fs long pulses, centered around 1030 nm, at 200 kHz repetition rate and 40 W average power. LÄS MER

  3. 2. Cut finite element methods for incompressibleflows with unfitted interfaces

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Carl Holmberg; [2018]
    Nyckelord :Finite element method;

    Sammanfattning : Problems with time-evolving domains are frequently occurring in computationalfluid dynamics and many other fields of science and engineering.Unfitted methods, where the computational mesh does not conform to thegeometry, are of great interest for handling such problems, since they removethe burden of mesh generation. LÄS MER

  4. 3. Semantic Analysis of Natural Language and Definite Clause Grammar using Statistical Parsing and Thesauri

    Kandidat-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik

    Författare :Björn Dagerman; [2013]
    Nyckelord :COLD; WordNet; thesaurus; semantic analysis; NLP; natural language processing; DFG; definite clause grammar; semantic relatedness;

    Sammanfattning : Services that rely on the semantic computations of users’ natural linguistic inputs are becoming more frequent. Computing semantic relatedness between texts is problematic due to the inherit ambiguity of natural language. LÄS MER