The three most expensive wildland fire suppression seasons have occurred since 2000, each exceeding $1 billion. Many problems and issues have been highlighted including the grounding of the federal air tanker fleet, training problems with private contractors, overspending, poor management strategies, negative public pefceptions, and the inability to utilize the...
The aim of this research is to understand and quantify the modeling differences between CSiBridge and OpenSees, and to determine sensitive model parameters. When designing bridges for the high seismic region of California, the California Department of Transportation (Caltrans) performs nonlinear time history analysis of their bridge models. For three-dimensional...
The collapse of the I-35W Bridge in Minneapolis, MN in 2007 prompted an investigation into the design and inspection of the steel truss bridges. Further investigation into the collapse revealed that a gusset plate experienced sway buckling, causing the bridge failure. This bridge failure motivated research into the analysis and...
Significant amounts of uncertainty owing to both modeling decisions and inherent randomness are present in simulating the material and geometric nonlinear response of structural systems to extreme loading. Computing the sensitivity of structural response with respect to model parameters indicates which parameters have the largest affect on the response, which...
This thesis presents the details of a large-scale laboratory experiment to study the
turbulence generated by waves breaking on a fixed barred beach. The data set includes
comprehensive measurements of free surface displacement and fluid velocity for one
random and one regular wave case.
Observations of the time-averaged turbulent kinetic...
Fifty-four premarital couples were interviewed in an attempt to:
(a) delineate pathways of premarital involvement; (b) investigate
differences in the relationships of individuals who follow different
pathways; and (c) examine which background variables predispose individuals
to follow a specific pathway. Four sexual pathway types were
established using a cluster analytic...
Our objective was to determine the influence of CP supplementation frequency
(SF) on cow performance, grazing time, distance traveled, maximum distance from
water, cow distribution, DMI, DM digestibility, harvest efficiency (HE), percentage of
supplementation events frequented, and CV for supplement intake for cows grazing
low-quality forage. One hundred-twenty pregnant (approx....
The global Cross-Laminated Timber (CLT) industry has changed dramatically within the past decade, with expansion outside of its start in Alpine Europe. The societal focus on more sustainable options within the built environment has led to an increased use of mass timber construction and its products including cross-laminated timber. Examining...
Due to age, original design that is deficient by modern standards, inadequate maintenance, environmental conditions, and increasing loads, large numbers of bridges in United States and elsewhere are classified as deficient and in need of rehabilitation or replacement. According to a national bridge inventory established by the Federal Highway Administration,...
