Sökning: "AAS"
Visar resultat 1 - 5 av 74 uppsatser innehållade ordet AAS.
1. Standardized Test Methods in Over-the-Air Chambers for FCC Part 27
Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysikSammanfattning : Base stations (BSs) are the cornerstone that enables wireless communications. In order for a new BS variant to be imported and sold in the US they are required to undergo electromagnetic compatibility (EMC) testing. This testing is necessary to obtain their Federal Communications Commission (FCC) certification. LÄS MER
2. Simulation and Testing of a MU-MIMO Beamforming System
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : Multi-User Multiple-Input Multiple-Output (MU-MIMO) technology has become increasingly important in the field of wireless communication due to its ability to highly increase the capacity and efficiency of wireless networks [1]. Beamforming, as a technique used in MU-MIMO systems, improves network performance by improving signal quality and reducing interference. LÄS MER
3. Generation of attosecond X-ray pulses in free-electron lasers using electron energy modulation and undulator tapering
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/FREIASammanfattning : Free-electron lasers (FELs) are among the world's most intense artificial artificial sources of coherent light and are tunable to various wavelengths, including the X-ray spectrum. X-ray FELs (XFELs) are extremely useful for diffraction experiments to study molecules, materials, and quantum systems. LÄS MER
4. Mercury accumulation in lake sediments on different time scales – the influence of algal primary production
Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : The aim of this work is to test the proposed approach of algal scavenging as a driver of sediment mercury (Hg) on different time scales and to gain a better understanding of the mechanisms of Hg accumulation in lake sediments. A 3000-year sediment record from Nylandssjön in northern Sweden was analysed for this purpose, as well as a 20-year sediment record from the seasonal sediment traps of this lake. LÄS MER
5. Påverkas anknytningsbeteende hos hund av ägarens personlighet och/eller vuxna anknytningsstil?
Master-uppsats, SLU/Dept. of Clinical SciencesSammanfattning : Hunden kan skapa ett band med sin djurägare som är lika unikt som viktigt. Genom evolutionära anpassningar och selektiv avel och har flera förändringar skett som förändrat hundens morfologi, anknytningssystem och belöningssystem. Ett resultat av detta är bland annat hundens förmåga att forma anknytningsband till sin djurägare. LÄS MER