Sökning: "high-frequency"
Visar resultat 21 - 25 av 740 avhandlingar innehållade ordet high-frequency.
21. Uncertainty quantification for high frequency waves
Sammanfattning : We consider high frequency waves satisfying the scalar wave equationwith highly oscillatory initial data. The speed of propagation of the mediumas well as the phase and amplitude of the initial data is assumed to beuncertain, described by a finite number of independent random variables withknown probability distributions. LÄS MER
22. Uncertainty quantification for high frequency waves
Sammanfattning : We consider high frequency waves satisfying the scalar wave equation with highly oscillatory initial data represented by a short wavelength ε. The speed of propagation of the medium as well as the phase and amplitude of the initial data is assumed to be uncertain, described by a finite number of independent random variables with known probability distributions. LÄS MER
23. Fast Adaptive Numerical Methods for High Frequency Waves and Interface Tracking
Sammanfattning : The main focus of this thesis is on fast numerical methods, where adaptivity is an important mechanism to lowering the methods' complexity. The application of the methods are in the areas of wireless communication, antenna design, radar signature computation, noise prediction, medical ultrasonography, crystal growth, flame propagation, wave propagation, seismology, geometrical optics and image processing. LÄS MER
24. High Frequency Analysis of LDMOS Transistors
Sammanfattning : .... LÄS MER
25. High Frequency Characterization and Modeling of SiGe Heterojunction Bipolar Transistors
Sammanfattning : .... LÄS MER