Bilinear systems can be viewed as a bridge between linear and nonlinear systems, providing a promising approach to handle various nonlinear identification and control problems. This paper provides a formal justification for the extension of interaction matrices to bilinear systems and uses them to express the bilinear state as a linear function of input-output data. Multiple representations of ...

This poster paper summarizes ongoing dissertation research (under the direction of Dr. Christopher M. Foley) concerned with the utilization of genetic algorithms for the optimization of steel structures that have semi-rigid connections using advanced inelastic analysis and performance based engineering design. An evolutionary algorithm has been developed that extends the standard genetic algori...

In a survey of dust devil activity at a desert playa using continuous monitoring by a pressure logger, we have detected a number of pressure drops with complex structures: simple and symmetric drops make up only 25–30% of the total. In contrast to the simple, symmetric single-dip profiles expected for singlecell vertical vortices gliding past the pressure sensor, many profiles have an asymmetri...

Background: Low Back Pain (LBP) is one of the most prevalent problems associated with sport activities. The present study aimed to investigate the relationship between pain and plantar pressure variables. In addition, we compared these variables in male and female athletes with LBP. Methods: In this study, 47 participants with the age range of 18 to 25 years w...

In this paper we apply a nonconforming rotated bilinear tetrahedral element to the Stokes problem in $\mathbb{R}^3$. We show that is stable combination with piecewise linear, continuous, approximation of pressure. This gives an similar well known continuous $P^2-P^1$ Taylor$-$Hood element, but fewer degrees freedom. The non-conforming low order which fulfils Korn's inequality, leading stability...