A time-domain model was developed to predict the fluid/structure
interaction of a three-dimensional deformable body in a fluid domain subject to
long-crested finite amplitude waves. These nonlinear waves induce transient
motion in the body. In turn, the interaction of the body with the waves modifies
the wave field, causing additional...
This thesis presents an effective control design methodology using a one-step-ahead prediction adaptive control law and an adaptive control law based on a Lyapunov function. These control law were applied to a highly maneuverable high performance aircraft, in particular, a modified F/A-18. An adaptive controller is developed to maneuver an...
The compressive behavior of continuous fiber composites is not as well
understood as their tensile behavior because research and industrial applications have until
recently focused on the latter. Furthermore, most theoretical and experimental studies on
the compression of composites have examined the case of unidirectional specimens with
fibers along the...
A complete solution, exact to second-order, for wave motion
forced by a hinged-wavemaker of variable-draft is presented. A
solution for a piston type wavemaker is also obtained as a special
case of a hinged-wavemaker with negative infinite draft. The
existing Stokes inviscid theories for mass transport is extended to
include...
A global solution is presented that accurately accounts for the
singular behavior at all irregular points. The linearized boundary
value problem in a semi-infinite strip in the physical plane is
transformed into a smooth unit disk by two successive conformal
mappings. The global solution results from a Fredholm integral
equation...
The optimal design technique for minimum power loss in
traction drive continuously variable transmissions is
developed. The mathematical model is developed to
evaluate the traction force and torque in traction drive
contact. Kinematic analysis of general traction drive
contact is conducted to find the best configuration for
minimum power loss....
Maximum equilibrium scour depths, equilibrium scour volumes,
and induced equilibrium movements at isolated obstacles on river
beds were investigated in clear-water scour. The research was
achieved by a systematic flume study based on the results of
dimensional analysis of local scour.
The main tested obstacles for local scour were cubes....
Dibenzo[def,p]chrysene (DBC) is a highly potent, but less prevalent, environmental carcinogen belonging to a class of compounds known as Polycyclic Aromatic Hydrocarbons (PAHs). They are highly ubiquitous and arise as a byproduct of natural and anthropogenic combustion processes. Previous studies have documented carcinogenic effects upon in utero exposure of PAHs....
Snowbrush (Ceanothus velutinus), red alder (Alnus rubra), and
bitterbrush (Purshia tridentata) are three important nitrogen- fixing
nonleguminous species. They commonly grow in association with
commercially important conifers in western United States and conceivably
could be utilized to add nitrogen to forest ecosystems. Nitrogen
15 gas was used to study nitrogen...
The purpose of this study is to examine the rhetorical efforts of President George W. Bush in defending his administration's warrantless wiretapping program. Specifically, the study attempts to determine the president's underlying motives when he defended the National Security Agency in a December 2005 radio address by applying Kenneth Burke's...