Sökning: "Mode coupling"
Visar resultat 1 - 5 av 153 avhandlingar innehållade orden Mode coupling.
1. Moral (de)coupling : moral disengagement and supply chain management
Sammanfattning : This research aims to fill an important gap in focusing on why individuals are able to take part in and/or support activities that have effects on economic, environmental, and social dimensions that are not consistent with their sense of right and wrong. The research focuses on the relationship between supply chain management and moral disengagement, and how this relation affects social responsibility. LÄS MER
2. Quasi-Single Mode VCSELs for Longer-Reach Optical Interconnects
Sammanfattning : The vertical-cavity surface-emitting laser (VCSEL) is the standard light source in optical interconnects connecting racks in supercomputers and datacenters hosting services such as online data sharing, storage and processing. VCSELs have numerous advantages such as low power consumption, fast direct modulation at low currents, circular output beam for efficient fiber coupling and low-cost fabrication. LÄS MER
3. Thermo-Acoustic Properties in Combustion Chambers
Sammanfattning : Design and analysis methods for gas turbine combustors or afterburners have to be improved in particular regarding the prediction of combustion instabilites. A methodology, which combines the use of a linearized flow solver and an Arnoldi algorithm performing the eigenmode extraction procedure, resolves eigenmodes which are candidates to these instabilities. LÄS MER
4. Magnetodynamics of pseudo spin valves investigated using co-planar waveguide and spin torque ferromagnetic resonance techniques
Sammanfattning : Nanocontact spin-torque nano-oscillators (NC-STNOs), based on magnetic multilayers, can generate a wide range of highly nonlinear localized and propagating spin wave modes for use in magnonics. In this thesis, we study some aspects of these structures from the fundamental physics point of view using the spin torque ferromagnetic resonance technique (ST-FMR) and conventional broadband FMR technique. LÄS MER
5. Investigating and Enhancing Performance of Multiple Antenna Systems in Compact MIMO/Diversity Terminals
Sammanfattning : Today, owners of small communicating device are interested in transmitting or receiving various multimedia data. By increasing the number of antennas at the transmitter and/or the receiver side of the wireless link, the diversity/Multiple-Input Multiple-Output (MIMO) techniques can increase wireless channel capacity without the need for additional power or spectrum in rich scattering environments. LÄS MER