Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"spectrum model"”.
-
Expansionary engagements : Butterworth's didactic-democratic spectrum model in physical theatre choreography
… Butterworth‘s five-tier Didactic-Democratic spectrum model for choreography. Being accustomed to, and trained predominantly in, one mode of approaching choreography has become limiting. Butterworth‘s model may aid me in expanding choreographically in the context of physical theatre-making. My …
-
Turbulent boundary layer models for acoustic analysis
… three types of turbulent boundary layer (TBL) models for acoustic analysis is presented because current preferred models over-predict TBL contributions to aircraft interior noise predictions. The mean square pressure is a measure of the total energy due to the pressure fluctuations beneath a …
-
Amplitude fluctuation effects in shallow water acoustic scattering by internal waves
… (IW) field using the Garrett-Munk internal wave spectrum model and then evaluates acoustic transmission in the simulated internal wave field with the Kraken normal mode program. Theoretical calculations are also performed using the theory developed in this thesis. Comparisons are made between …
-
Propagation of Gaussian Beams Through a Modified von Karman Phase Screen
… separated beams. We use the modified von Karman spectrum model to describe the phase screen statistics, utilizing the Fried parameter, inner scale and the outer scale. The scintillation index is analyzed as a function of the structure constant, phase screen location, the initial width of the …
-
Direct simulation and deterministic prediction of large-scale nonlinear ocean wave-field
… of physics, the phase-averaged wave spectrum model has been the only type of tool available for ocean wave prediction in the past 60 years. With the rapid advances in sensing technology, phase-resolved nonlinear wave modeling, and high performance computing capability in recent years, …
-
The Noise of a Boundary Layer Flowing Over Discrete Roughness Elements
… were made between the theoretical drag spectrum model proposed by Glegg et al. (1987) and a modified version of this model made using the empirical data gathered. Overall, the theory of Glegg et al. (2007) succeeds greatly in collapsing the data into its non-dimensional drag spectra, but …
-
Dynamic Analysis Of Offshore Structures
… study, an improved one dimensional wave equation model is developed which accounts for wave propagation in the soil mass and thus gives more realistic prediction of the pile displacements. A three dimensional finite element analysis of the problem is also formulated and its results are compared …
-
Spectral feature classification of oceanographic processes using an autonomous underwater vehicle
… Underwater Vehicle (AUV). The "mingled spectrum principle" is established which concisely relates observations from a moving platform to the frequency-wavenumber spectrum of the ocean process. It clearly reveals the role of the AUV speed in mingling temporal and spatial information. For …
-
Spectral feature classification of oceanographic processes using an autonomous underwater vehicle
… Underwater Vehicle (AUV). The "mingled spectrum principle" is established which concisely relates observations from a moving platform to the frequency-wavenumber spectrum of the ocean process. It clearly reveals the role of the AUV speed in mingling temporal and spatial information. For …
-
Study of Coulomb collisions and magneto-ionic propagation effects on incoherent scatter radar measurements at Jicamarca
… analyzed in detail. The present study aims at modeling radar observations of the equatorial ionosphere carried out at the Jicamarca Radio Observatory (Lima, Peru) using antenna beams pointed perpendicular to the Earth's magnetic field B. A Monte Carlo procedure based on the simulation of …
-
Empirical modelling of spectrum use and evaluation of adaptive spectrum sensing in dynamic spectrum access networks
… applications yields a growing demand for radio spectrum. However, most of the commercially interesting spectrum has been assigned to various services and allocating further spectrum is a cumbersome process. Some authors claim that current policies are inefficient and cause an artificial spectrum …