Sökning: "NBI"
Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet NBI.
1. Fast ions and turbulent particle transport in tokamaks
Sammanfattning : The presence of highly energetic (fast) ions, be it fusion born alpha particles or ions accelerated by auxiliary heating schemes, can affect the heating and transport of all particles in the plasma through two main mechanisms. First, fast ions may excite fast ion driven instabilities. LÄS MER
2. Diagnosing Fuel Ions in Fusion Plasmas using Neutron Emission Spectroscopy
Sammanfattning : Neutron emission spectra, measured with the time of flight spectrometer TOFOR, at the joint European torus (JET) are presented in this thesis. TOFOR has been in use since 2005, routinely measuring the neutron emission from JET plasmas. LÄS MER
3. Measuring the impact of body functions on occupational performance : validation of the ADL-focused occupation-based neurobehavioral evaluation (A-ONE)
Sammanfattning : Background: Among the instruments commonly used by occupational therapists working in the area of rehabilitation of persons with neurological disorders are evaluations of both occupation, such as activities of daily living (ADL), and body functions. While persons with neurological diagnoses typically have symptoms that represent diminished neurobehavioral functions, the resulting pattern of neurobehavioral impairments affecting ADL performance often differs among diagnostic groups. LÄS MER
4. On Fast-Ion Transport and Burn Control in Tokamaks
Sammanfattning : Fast ions, generated by e.g. neutral beam injection (NBI), radio frequency (RF) heating or nuclear reactions, play an important role in all large tokamaks. Several issues related to fast ions and burning fusion plasmas are addressed in this thesis. LÄS MER
5. Multicarrier modulation : duplexing design and interference/distortion mitigation
Sammanfattning : Aspects of modern communication systems is the overall theme of this thesis with emphasis placed on multicarrier modulation. The work considers four facets of such systems; namely duplexing design, interference mitigation, channel estimation and multiuser detection. LÄS MER