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Skip to Search Results- 18Graduate and Postdoctoral Studies (GPS), Faculty of
- 18Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 10Physics, Department of
- 10Physics, Department of/Journal Articles (Physics)
- 5Biological Sciences, Department of
- 5Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 4Department of Chemical and Materials Engineering
- 3Department of Civil and Environmental Engineering
- 3Department of Mechanical Engineering
- 2Department of Physics
- 1Department of Biochemistry
- 1Department of Chemistry
- 1AbouRizk, Simaan (Civil and Environmental Engineering)
- 1Charles R. (Bob) Koch (Mechanical Engineering)
- 1Darrah, Johanna (Physical Therapy)
- 1Dr. Choi, Phillip (Department of Chemical and Materials Engineering)
- 1Freeman, Mark (Physics)
- 1Grondin, Gilbert (Department of Civil and Environmental Engineering)
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1994
Tikhonchuk, V. T., Frycz, P., Samson, J. C., Rankin, Robert
We present theory and numerical simulations of strong nonlinear effects in standing shear Alfven waves (SAWs) in the Earth's magnetosphere, which is modeled as a finite size box with straight magnetic lines and (partially) reflecting boundaries. In a low beta plasma it is shown that the...
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Spring 2012
Experimentally-validated nonlinear flight control of a helicopter UAV has two necessary conditions: an estimate of the vehicle’s states from noisy multirate output measurements, and a nonlinear dynamics model with minimum complexity, physically controllable inputs and experimentally identified...
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Fall 2021
Instability, morphology, and dewetting of thin films have been the subject of intensive research due to their important industrial and technological applications, including decorative or protective coatings, an intervening media in liquid-liquid emulsions, and polymer films in soft lithography....
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Numerical modelling of the Arctic and North Atlantic exchanges with NEMO: Focus on freshwater and dynamics
DownloadFall 2018
The Arctic is currently undergoing significant changes due to increasing anthropogenic greenhouse gases causing atmospheric warming. The impact of this warming is clearly visible in the Arctic: reduced sea-ice cover, enhanced land-ice melting, increased frequency of extreme weather, etc....
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Phoretic mite associates of mountain pine beetle at the leading edge of an infestation in northwestern Alberta, Canada
Download2011
Proctor, H. C., Evenden, M. L., Mori, B. A., Walter, D. E.
Abstract: We identified species of mites phoretically associated with mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae: Scolytinae), collected from bolts of lodgepole pine, Pinus contorta Douglas ex Louden (Pinaceae), and pheromone-baited traps in northwestern...
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Route Level Dynamic Travel Time Estimation on Freeway: A Case Study in Edmonton on Whitemud Drive
DownloadSpring 2016
Travel time is increasing critical in Advanced Traveler Information System (ATIS) for traffic management. Several years ago, traditional methods for e.g. travel time measurement and average historical methods were often used. However, they are expensive and inflexible. Besides, lots of...
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Shear Alfvén waves on stretched magnetic field lines near midnight in Earth's magnetosphere
Download2000
Tikhonchuk, Vladimir T., Rankin, Robert, Fenrich, Frances
The spectrum of toroidal standing shear Alfvén waves (SAWs) is derived for a stretched magnetic field line geometry that is approximated by the Tsyganenko 96 magnetic field model. The model is applied to field lines near the midnight meridional plane. It is demonstrated that the fundamental mode...
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1999
Tikhonchuk, V. T., Voronkov, I., Samson, J. C., Rankin, Robert
The three-dimensional, nonlinear evolution of a shear how (or Kelvin-Helmholtz (KH)) instability driven by a large-amplitude shear Alfven wave (SAW) in the Earth's magnetosphere is studied by using numerical solutions to the complete set of ideal magnetohydrodynamic equations. An initial setup is...
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2012
Sydorenko, Dmytro, Rankin, Robert
A two-dimensional numerical model of low-altitude auroral flux tubes has been developed for simulation of coupling between the magnetosphere and the ionosphere. The model considers a realistic ionosphere with multiple ion and neutral species, collisions, cooling and heating processes, as well as...
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Fall 2010
Computational simulations of a perturbed vortex ring are performed to recreate and understand the instability seen in impacting water droplet experiments. Three initial conditions are tried to respectively trigger a Widnall instability, a Rayleigh centrifugal instability, and a vortex breakdown...