Sökning: "error sources"

Visar resultat 6 - 10 av 174 avhandlingar innehållade orden error sources.

  1. 6. Investigation and calibration of pulsed time-of-flight terrestrial laser scanners

    Författare :Yuriy Reshetyuk; Lars E. Sjöberg; Stig-Göran Mårtensson; KTH; []
    Nyckelord :terrestrial laser scanning; error sources; calibration; coordinate precision accuracy;

    Sammanfattning : This thesis has two aims. The first one is the investigation and analysis of the errors occurring in the measurements with pulsed time-of-flight (TOF) terrestrial laser scanners (TLS). A good understanding of the error sources and the relationships between them is necessary to secure the data accuracy. LÄS MER

  3. 7. Self-calibration and direct georeferencing in terrestrial laser scanning

    Författare :Yuriy Reshetyuk; Lars E. Sjöberg; Milan Horemuz; Hansjörg Kutterer; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; terrestrial laser scanning; self-calibration; direct georeferencing; error sources; Surveying; Lantmäteri;

    Sammanfattning : An important step in data processing from terrestrial laser scanning (TLS) is georeferencing, i.e. transformation of the scanner data (point clouds) into a real world coordinate system, which is important for their integration with other geospatial data. LÄS MER

  4. 8. Diagnosing hyper- and hypocortisolism using saliva samples : pitfalls and how to avoid them

    Författare :Nils Bäcklund; Per Dahlqvist; Göran Brattsand; Tommy Olsson; Elisabeth Aardal; Kerstin Landin-Wilhelmsen; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cushing s syndrome; Adrenal Insufficiency; Salivary cortisol; Salivary cortisone; Reference intervals; Diagnostic accuracy; Error sources; invärtesmedicin; Internal Medicine; medicinsk biokemi; Medical Biochemistry;

    Sammanfattning : Background: Cushing's syndrome (CS) is caused by high cortisol secretion whereas insufficient cortisol secretion is called adrenal insufficiency (AI). Both are rare diseases with substantial diagnostic delay, and high morbidity and mortality even though effective treatment is available. LÄS MER

  5. 9. Site dependent error sources in geodetic Very-Long-Baseline Interferometry

    Författare :T. Ragne Carlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; space geodecy; Water Vapor Radiometer WVR ; very-long-baseling interferometry VLBI ; Global Positioning System GPS ; Kalman filtering;

    Sammanfattning : .... LÄS MER

  7. 10. Lifetime Surface Phosphor Thermometry - Technique Developments, Sources of Error, and Applications

    Författare :Henrik Feuk; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phosphor thermometry; thermographic phosphors; decay time; lifetime; laser-induced phosphorescence; thermometry; high temperature; surface thermometry; maximum entropy method; Kubelka-Munk; Fysicumarkivet A:2023:Feuk;

    Sammanfattning : Temperature is not only a fundamental aspect of everyday life, but it is also an essential metric for thermal conversion systems concerning efficiency, emissions, and component lifetime estimation. Therefore, a vast range of different methods to measure temperature has been developed. LÄS MER