Sökning: "High resolution"
Visar resultat 1 - 5 av 2020 avhandlingar innehållade orden High resolution.
1. Neural limits of visual resolution
Sammanfattning : Aims: The aim of this thesis was to formulate a model of retinal neural circuitry in humans based on morphological estimates of retinal cone and ganglion cell populations, to compare results based on this model to psychophysical measurements of visual resolution and identify the retinal neural factors that limit visual resolution.Materials & Methods: Total displacement of central ganglion cells from foveal cones was obtained by estimating the length of fibers of Henle in four human retinas along the nasal or vertical hemi-meridians. LÄS MER
2. High resolution displacement measurement of micromechanical structures : the RDGT
Sammanfattning : .... LÄS MER
3. High Resolution Observations of Masers
Sammanfattning : Cosmic masers are associated with both the early and late stages in the life of a star. High resolution observations of maser emissions are unique tools to study the physical and chemical environments in and around young stellar and protostellar objects, and around stars at the end of their life. LÄS MER
4. Constructing and Commissioning HELIOS – A High Harmonic Generation Source for Pump-Probe Measurements with sub 50 fs Temporal Resolution : The Development of Experimental Equipment for Extreme Ultraviolet Spectroscopy
Sammanfattning : This thesis presents HELIOS, an in-house laboratory for time-resolved pump-probe spectroscopy with extreme-ultraviolet (XUV) probe radiation. A wide span of pump wavelengths can be generated using commercial laser equipment while XUV probe radiation is generated via a high harmonic generation process in a noble gas delivering probe photons with energies between 20 eV and 72 eV. LÄS MER
5. Urban Land-cover Mapping with High-resolution Spaceborne SAR Data
Sammanfattning : Urban areas around the world are changing constantly and therefore it is necessary to update urban land cover maps regularly. Remote sensing techniques have been used to monitor changes and update land-use/land-cover information in urban areas for decades. Optical imaging systems have received most of the attention in urban studies. LÄS MER