Sökning: "EOP"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet EOP.

  1. 1. Exploring Strategies for the Combination of Multiple Space-geodetic Techniques

    Författare :Periklis Diamantidis; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Space Geodesy; GNSS; Combination on the Observation Level; EOP; Reference Systems; VLBI; Local Ties;

    Sammanfattning : Space-geodetic techniques are based on signal acquisition from extraterrestrial radio sources that can be used to infer geodetic positioning and define Earth-fixed and inertial reference systems. These techniques, which include Very Long Baseline Interferometry (VLBI) and Global Navigation Satellite Systems (GNSS) among others, exhibit different strengths and weaknesses in recovering parameters of interest. LÄS MER

  3. 2. Geodetic analysis for the Very Long Baseline Interferometry Global Observing System

    Författare :Niko Petteri Kareinen; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; VLBI; GGOS; VGOS; digital back-ends; Earth rotation; DBBC; automated analysis; EOP; UT1;

    Sammanfattning : Very Long Baseline Interferometry (VLBI) is an essential technique forspace-geodesy. It realizes the International Celestial Reference Frame(ICRF) and provides a link between the Earth- and space-fixed coordinatesystems by directly observing all Earth Orientation Parameters (EOP)simultaneously. LÄS MER

  4. 3. Combination of space-geodetic techniques in the era of VGOS and multi-GNSS

    Författare :Periklis Diamantidis; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Local Ties; EOP; Reference Systems; GNSS; VLBI; Combination on the Observation Level; multi-GNSS; Space Geodesy; VGOS;

    Sammanfattning : The definition and maintenance of accurate and stable Earth-fixed and inertial reference frames is crucial in studying, among else, geophysical and geodynamical phenomena, precise positioning, and space navigation. The tools used to this end are space-geodetic techniques, like e.g. LÄS MER

  5. 4. Oxygen formation in the chlorate process and preparation and deactivation of ozone selective anodes

    Författare :Staffan Sandin; Ann M. Cornell; Paul Christensen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATO; EOP; ozone; electrode preparation; elec- trode deactivation; hypochlorite; chlorate; oxygen; chromium VI ; sodium dichromate; electrocatalysis; catalysis; Chemical Engineering; Kemiteknik;

    Sammanfattning : This thesis presents experimental studies concerning two differ-ent electrolytic processes. One part deals with the electrochemicalformation of ozone and focuses on the preparation and deactiva-tion of a highly ozone-selective metal oxide anode (NATO - nickeland antimony doped tin oxide). LÄS MER

  7. 5. Essays on Nonlinear Pricing and Welfare

    Författare :Tommy Andersson; Nationalekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ekonomisk teori; ekonomiska system; ekonomisk politik; economic policy; Nationalekonomi; ekonometri; economic systems; economic theory; econometrics; Economics; Monopoly.; Welfare; Budget-balance; Redistribution; Envy-freeness; Nonlinear pricing;

    Sammanfattning : The price of a good is said to be nonlinear if the unit price not is constant but depends on some aspect of the quantity (or quality) purchased. This form of pricing is commonly used in many industries, e.g. the electricity and water industries, and has many desirable properties. LÄS MER