Essays about: "vir"

Showing result 6 - 10 of 12 essays containing the word vir.

  1. 6. Frequency tunability of axial cavity vircators and double anode vircators

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Jakob Petrén; [2016]
    Keywords : ;

    Abstract : This master thesis investigates the possibility of constructing a continu-ously tuneable virtual cathode oscillator (vircator), which can be used as a radiation source in high power microwave susceptibility testing carried out by the electrophysics group at the Swedish Defence Research Agency (FOI). To determine if a vircator can be made continuously frequency tuneable in a 10 %bandwidth around a central frequency lying within the S-band two vircator designs, the first an axial cavity vircator and the second a double anode vir-cator, are evaluated with electromagnetic particle-in-cell simulations using the software Magic3D. READ MORE

  3. 7. Economy and policy of pre–commercial thinnings in Lithuanian private forestry

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Karolis Mickevicius; [2013]
    Keywords : private forest owners; pre-commercial thinnings; policy instruments; net present value; internal rate of return;

    Abstract : This thesis investigates how well does pre-Commercial thinnings (PCT) match silvicultural requirements in Lithuania as well as how adequately are the policy instruments steering the application of thinnings. Analysis is carried in three steps. First, 15 selected sample stands were assessed in the central part of Lithuania. READ MORE

  4. 8. Solar Booster Augmentation for Existing Coal Fired Power Plant (A Feasibility Study)

    University essay from KTH/Kraft- och värmeteknologi

    Author : Arun Vir; [2012]
    Keywords : ;

    Abstract : The fast depletion of fossil fuel has increased the havoc and need of finding an alternative for the existing fossil fuel based energy industry. As a result, many renewable energy sources such as Solar, Wind, Geo Thermal, Bio mass, etc... READ MORE

  5. 9. An Integrated High Efficiency DC-DC Converter in 65 nm CMOS

    University essay from Elektroniksystem

    Author : Vir Varinder Manh; [2010]
    Keywords : DC-DC Converter; Voltage Regulator; Buck; PWM; PFM; High Efficiency; Switching; Amplifier; Comparator;

    Abstract : This thesis work describes the implementation perspective of an integrated high efficiency DC-DC converter implemented in 65 nm CMOS. The implemented system employs the Buck converter topology to down-convert the input battery voltages. This converter offers its use as a power management unit in portable battery operated devices. READ MORE

  6. 10. RTLS - real time location systems : an inventory study for agriculture applications and requirements

    University essay from SLU/Dept. of Energy and Technology

    Author : Mattias Larsson; [2010]
    Keywords : RTLS; RFID; VIR; Herd management; Traceability; Precision agriculture; Irrigation management;

    Abstract : The trend towards increasingly large farming units raises questions regarding how to better monitor production. Larger units make the impact from possible errors more severe, which increases the pressure on management supervision. READ MORE