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Visar resultat 1 - 5 av 7 uppsatser som matchar ovanstående sökkriterier.
1. Time-resolved x-ray diffraction study of longitudinal optical phonons in zincblende semiconductors
Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenSammanfattning : Anharmonic decay of longitudinal optical (LO) phonons in zincblende semiconductors is not at present well characterized due to the polar and many-body nature of the problem. Femtosecond THz radiation offers a novel route to this study, as the interaction of this radiation is directly with the phonon lattice and these THz excited phonons do not have enough energy to excite electrons over the band gap. LÄS MER
2. The combination of SFDI with a mathematical model links perturbation in microcirculation to early stages of sepsis
Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknikSammanfattning : The microcirculation system is crucial for the function of delivering biological markers such as oxygen and removing carbon dioxide from all the cells forming the complex ma- trix of tissue in the body. To keep up with the demands of each and every cell, there is a response from the microvasculature - resulting from for instance changes in blood flow to the tissue area. LÄS MER
3. Combined Heuristic and Statistical Methodologies applied to Maneuver Detection in the SST Observation Correlation Process
Master-uppsats, Luleå tekniska universitet/RymdteknikSammanfattning : In this project, an algorithm has been proposed to detect a satellite’s maneuver by comparingthe orbital elements observed from the two line element data and the orbital elements propagatedwith the help of Simplified perturbations models. A set of TLE data for an object orbiting Earthcontains a specific set of orbital elements. LÄS MER
4. Airborne Radar Ground Clutter Suppression Using Multitaper Spectrum Estimation : Comparison with Traditional Method
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknikSammanfattning : During processing of data received by an airborne radar one of the issues is that the typical signal echo from the ground produces a large perturbation. Due to this perturbation it can be difficult to detect targets with low velocity or a low signal-to-noise ratio. LÄS MER
5. Block Diagonalization Based Beamforming
Master-uppsats, KTH/Teknisk informationsvetenskapSammanfattning : With increasing mobile penetration multi-user multi-antenna wireless communication systems are needed. This is to ensure higher per-user data rates along with higher system capacities by exploiting the excess degree of freedom due to additional antennas at the receiver with spatial multiplexing. LÄS MER