Sökning: "high-frequency data"

Visar resultat 1 - 5 av 186 avhandlingar innehållade orden high-frequency data.

  1. 1. Time series modelling of high frequency stock transaction data

    Författare :Shahiduzzaman Quoreshi; Kurt Brännäs; Per Johansson; Umeå universitet; []
    Nyckelord :Economics; Count data; Intra-day; High frequency; Time series; Estimation; Long memory; Finance; Nationalekonomi; Econometrics; ekonometri;

    Sammanfattning : .... LÄS MER

  3. 2. High Frequency Microwave and Antenna Devices based on Transformation Optics and Glide-Symmetric Metasurfaces

    Författare :Mahsa Ebrahimpouri; Oscar Quevedo-Teruel; Nader Engheta; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Glide Symmetry; Transformation Optics; Lens Antennas; High Frequency; Microwave Devices; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The new generation of wireless communication networks intends to support data rate of Gbit/s. One solution to make it possible is to move upwards in frequency range to employ the unused spectrum in mm-wave frequencies. LÄS MER

  4. 3. Uncertainty quantification for high frequency waves

    Författare :Gabriela Malenova; Olof Runborg; Daniel Appelö; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : We consider high frequency waves satisfying the scalar wave equationwith highly oscillatory initial data. The speed of propagation of the mediumas well as the phase and amplitude of the initial data is assumed to beuncertain, described by a finite number of independent random variables withknown probability distributions. LÄS MER

  5. 4. Uncertainty quantification for high frequency waves

    Författare :Gabriela Malenova; Olof Runborg; Fabio Nobile; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

    Sammanfattning : We consider high frequency waves satisfying the scalar wave equation with highly oscillatory initial data represented by a short wavelength ε. The speed of propagation of the medium as well as the phase and amplitude of the initial data is assumed to be uncertain, described by a finite number of independent random variables with known probability distributions. LÄS MER

  7. 5. Optical interconnects and high frequency electronic packaging : SBU-materials, material characterization, LAP- & microprocessing

    Författare :Steffen Uhlig; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optical interconnects; overview opto coupling components; overview planar waveguide amplifiers; large area panel processing; polymer waveguides; multilayer thin film technology; ORMOCER®; sequential build up; permittivity; dielectric loss;

    Sammanfattning : The main objective of this thesis is to discuss and demonstrate optical interconnect technologies. These can be used to enhance the data throughput capacity of future printed circuit boards and backplanes, i.e. exchange Copper conductors with light conductors. LÄS MER