Sökning: "Q-factor"

Visar resultat 1 - 5 av 19 uppsatser innehållade ordet Q-factor.

  1. 1. Demographic equilibrium modelling of single tree selection stands in Siljansfors : judging the sustainability of single tree selection systems in Sweden

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Ludwig Olofsson; [2023]
    Nyckelord :CCF; continuous cover forestry; single tree selection; equilibrium models; forestry;

    Sammanfattning : Lately debates have occurred questioning the rotation system, which is the most used silvicultural system in Sweden. Continuous cover forestry (CCF) has therefore been suggested as an alternative management method, due to its environmental benefits such as increased biodiversity and higher resilience against extreme weather which is important with the current climate change. LÄS MER

  3. 2. 3D Coating of Interface Materials for High-Performance RF Passive Devices

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Xiner Shen; [2023]
    Nyckelord :Ceramic coating; Dip coating; Radio frequency; Passive RF devices; Quality factor; Keramisk beläggning; Dip-beläggning; Radiofrekvens; Passiva RF-enheter; Kvalitetsfaktor;

    Sammanfattning : The demand for high-performance Radio Frequency (RF) passive devices has been steadily increasing due to the growing complexity and sophistication of wireless communication systems. The Quality factor (Q-factor) is a key parameter for describing the signal losses and the energy efficiency of resonators. LÄS MER

  4. 3. Feasibility Study of Resistivity Measurement of Metal Surfaces to Address Potential Dislocations Caused by Surface Conditioning

    Master-uppsats, Uppsala universitet/FREIA

    Författare :Mircea-George Coman; [2022]
    Nyckelord :;

    Sammanfattning : High electrical fields are needed inside the accelerating cavities of particle accelerators in order to accelerate the particles to higher energies in shorter distances. But high electrical fields will lead to electrical breakdowns. LÄS MER

  5. 4. Q-factor Investment Approach: Evidence from the Swedish Equity Market

    Master-uppsats, Göteborgs universitet/Graduate School

    Författare :Jesper Lundgren; Robin Olin; [2021-06-30]
    Nyckelord :Asset pricing; q-factor model; Swedish equity market;

    Sammanfattning : Four easily measured factors: market, size, investment, and pro tability together con- stitute the empirical q-factor model. The combination of factors have previously shown to largely capture the cross-sectional variation in average stock returns. LÄS MER

  7. 5. "Resonance frequency, Q-factor, coupling of a cylindrical cavity and the effect on graphite from an alternating electric field".

    Kandidat-uppsats, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Jakob Gölén; Simon Persson; [2021]
    Nyckelord :Q-factor; Resonance frequency; Cavity; Microwaves; Heating; Q-faktor; Resonansfrekvens; Kavitet; Mikrovågor; Uppvärmning;

    Sammanfattning : The purpose of this project was to investigate a cylindrical cavity resonator and use microwaves to heat up a material in the cavity. This was done by measuring the Q-factor and the resonance frequency of the cavity, both with and without material inside. LÄS MER