15,614 research outputs found
The identification of continuous, spatiotemporal systems
We present a method for the identification of continuous, spatiotemporal
dynamics from experimental data. We use a model in the form of a partial
differential equation and formulate an optimization problem for its estimation
from data. The solution is found as a multivariate nonlinear regression problem
using the ACE-algorithm. The procedure is successfully applied to data,
obtained by simulation of the Swift-Hohenberg equation. There are no
restrictions on the dimensionality of the investigated system, allowing for the
analysis of high-dimensional chaotic as well as transient dynamics. The demands
on the experimental data are discussed as well as the sensitivity of the method
towards noise
SLO\u27s and School Counseling: A Perfect Fit
Dr. Brandie Oliver and Dr. Nick Abel address student learning outcomes for school counselors in the March 2015 issue of IndianaGram
Hints For Hiring School Counselors: How Can School Counselors Have A Positive Effect On Student Outcomes?
Dr. Oliver and Dr. Abel take a look at the role of school counselors and the positive impact they can have on student outcomes
Hints For Hiring School Counselors: Using Your New School Counselor Effectively
In this column, Dr. Oliver and Dr. Abel provide helpful hints and recommendations on school counseling
Hints For Hiring School Counselors: What does it mean when an applicant graduates from a CACREP accredited program?
Dr. Oliver and Dr. Abel explore what it means when an applicant graduates from a CACREP accredited school counseling program
Front speed enhancement in cellular flows
The problem of front propagation in a stirred medium is addressed in the case
of cellular flows in three different regimes: slow reaction, fast reaction and
geometrical optics limit. It is well known that a consequence of stirring is
the enhancement of front speed with respect to the non-stirred case. By means
of numerical simulations and theoretical arguments we describe the behavior of
front speed as a function of the stirring intensity, . For slow reaction,
the front propagates with a speed proportional to , conversely for
fast reaction the front speed is proportional to . In the geometrical
optics limit, the front speed asymptotically behaves as .Comment: 10 RevTeX pages, 10 included eps figure
Status of two studies on active control of aeroelastic response
The application of active control technology to the suppression of flutter has been successfully demonstrated during two recent studies in the Langley transonic dynamics tunnel. The first study involved the implementation of an aerodynamic-energy criterion, using both leading- and trailing-edge controls, to suppress flutter of a simplified delta-wing model. Use of this technique has resulted in an increase in the flutter dynamic pressure of approximately 12 percent for this model at a Mach number of 0.9 Analytical methods used to predict the open- and closed-loop behavior of the model are also discussed. The second study, was conducted to establish the effect of active flutter suppression on a model of the Boeing B-52 Control Configured Vehicle (CCV). Some preliminary results of this study indicate significant improvements in the damping associated with the critical flutter mode
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