Edge detection is a process of identifying and detecting sharp discontinuities in an image. The discontinuities are abrupt changes in pixel intensity gray level value. The traditional method of edge detection involves convolving the image with an operator (2D filter) which is constructed to be sensitive to noise. Edge detector is a collection of very important local image processing method to l...

This article investigates the control of a two degree-of-freedom aeroelastic system with a torsional stiffness nonlinearity. The dynamics are transformed into a Linear Fractional Representation (LFR) such that the nonlinear effects of airspeed on the dynamics act as a gain feedback to the nominal system. A controller in LFR, which allows it to schedule with airspeed, is then synthesised using L...

Highly-swept blades are used in automotive cooling systems, the fans of modern ultra-high by-pass ratio engines and counter-rotating open rotors, part order to reduce noise emission. The present work investigates effect sweep on free-field emission from trailing edge an isolated airfoil analytically, as a first step towards more complete approach dedicated rotating blades. Firstly, Amiet–Schwar...

In order to determine a guaranteed upper bound for worst case “1-cosine” gust loads of flexible aircrafts, the usage of the worst case energy-to-peak gain of linear parametervarying (LPV) systems has been recently proposed. A limitation of this approach is that it cannot deal with nonlinearities. This paper uses integral quadratic constraints (IQCs) to circumvent this restriction and to conside...

The optimization of a controlled flapping wing micro aerial vehicle for energy-efficient flight in gust using a general, service-oriented framework is investigated. Kinematic (wing-stroke pattern), geometric (wing shape), frequency, and control (state penalty) design variables are considered in a sequence of optimization problems. The service-oriented framework is applied to the integration of ...

Sclafani A, Zukerman S, Glendinning JI, Margolskee RF. Fat and carbohydrate preferences in mice: the contribution of -gustducin and Trpm5 taste signaling proteins. Am J Physiol Regul Integr Comp Physiol 293: R1504–R1513, 2007. First published July 25, 2007; doi:10.1152/ajpregu.00364.2007.—Trpm5 and -gustducin are key to the transduction of tastes of sugars, amino acids, and bitter compounds. Th...

In this report, a technique for optimizing 3D triangulations is proposed. The method seeks to minimize an energy defined as a sum of energy terms for each edge in a triangle mesh. The main contribution is a novel per edge energy which strikes a balance between penalizing dihedral angle yet allowing sharp edges. The energy is minimized using edge swapping, and this can be done either in a greedy...