Sökning: "differential measurements"

Visar resultat 6 - 10 av 207 avhandlingar innehållade orden differential measurements.

  1. 6. Hydrodynamics of very shallow lakes - A study in Lake Krankesjön, Sweden

    Författare :Charlotta Borell Lövstedt; Lunds universitet.; Lund University.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; alternative stable states; field measurements; reed; resuspension; wave damping; waves; differential heating; vegetation; convective currents;

    Sammanfattning : Shallow lakes have great ecological and recreational values. They are also largely affected by humans, mainly through eutrophication, and great efforts are therefore being put into the understanding of these ecosystems. The knowledge is however not complete, and more research is needed to manage these lakes in a sustainable way. LÄS MER

  2. 7. Identification and Estimation for Models Described by Differential-Algebraic Equations

    Detta är en avhandling från Institutionen för systemteknik

    Författare :Markus Gerdin; Linköpings universitet.; Linköpings universitet.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Differential-Algebraic Equations; Identifiability; Nonlinear systems; Modelling; Identification; Descriptor systems; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik;

    Sammanfattning : Differential-algebraic equations (DAEs) form the natural way in which models of physical systems are delivered from an object-oriented modeling tool like Modelica. Differential-algebraic equations are also known as descriptor systems, singular systems, and implicit systems. LÄS MER

  3. 8. High-sensitivity Radioactive Xenon Monitoring and High-accuracy Neutron-proton Scattering Measurements

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Cecilia Johansson; Uppsala universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Monte Carlo simulations; MCNP; xenon detection; detector response; neutron detection; elastic scattering; differential cross section; Kärnfysik; NATURAL SCIENCES Physics Nuclear physics; NATURVETENSKAP Fysik Kärnfysik;

    Sammanfattning : Two aspects of applied nuclear physics have been studied in this thesis; Monte Carlo simulations for high-sensitivity monitoring of radioactive xenon and high-accuracy neutron-proton scattering measurements for neutron physics applications and fundamental physics. The Monte Carlo simulations have been performed for two systems for detection of radioactive xenon, using the MCNP code. LÄS MER

  4. 9. Measurements on the differential cross section for the photoproduction of neutral pions on hydrogen

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :John Palmer; Lunds universitet.; Lund University.; [1976]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:1976:Palmer;

    Sammanfattning : .... LÄS MER

  5. 10. Advanced Schottky Diode Receiver Front-Ends for Terahertz Applications

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Peter Sobis; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; terahertz electronics; TRL-calibration; frequency converters; down converters; phase shifters; S-parameter measurements; Schottky diodes; subharmonic mixers; radiometers; terahertz technology; submillimetre wave technology; heterodyne receivers; differential phase shifters; sideband separating mixers;

    Sammanfattning : This thesis treats the development of high frequency circuits for increased functionality of terahertz receiver front-ends based on room temperature Schottky diode technology. This includes the study of novel circuit integration schemes, packaging concepts as well as new measurement and characterisation techniques. LÄS MER