The application of low-frequency acoustic methods for nondestructive testing has a very long history, probably originating with a simple tap technique. These techniques have been successfully applied to a variety of materials and are widely used for the assessment of the quality of bonded sheet metals. They have also proved useful in the NDE of composite materials, particularly honeycomb panels...

background: lip carcinoma is a common cancer with a good prognosis and when patients refer early in the course of disease the results of treatment are acceptable. surgical procedures for reconstruction of lip defects are the use of remaining lip tissue, tissue from the opposite lip, adjacent cheek tissue, distant flaps and microvascular free flaps. the bitemporal (visor) flap is a regional flap...

Introduction The BOLD signal is a weak signal, and hence if no BOLD signal is found in an area this does not automatically mean there is no neural activity in that area. Signal dropout, artifacts, instability, physiological noise, RF-coil inhomogeneity etc. can all reduce the SNR locally leading to decreased detectability of the BOLD signal. Here we illustrate that calculation of the spatial di...

The problem of synchronization and detection of random pulse-position-modulation . . pp?.I 1 sqct ! :ces :s ~:~~;e~ti~:...!.p(! ::z?.t.r ~ ~ ~ ~ ! : : : n + ~ n i i nf ~ p r f p ~ f ~ !n t c \ ~ ~ c ! h r r > ~ ~ i z = t i f i ~ ~ r . a > > ~ I a x i ~ ~ ~ u ~ n l i k e l i l i c , o t l PPh synibol syiicliroxiiza.t.iori and receiver algorit.linis are derived that 111ilkt’ decisions 1 x 1 ~ ~ 1...

Generalized synchronization of chaos is a type of cooperative behavior in directionally coupled oscillators that is characterized by existence of stable and persistent functional dependence of response trajectories from the chaotic trajectory of driving oscillator. In many practical cases this function is nondifferentiable and has a very complex shape. The generalized synchrony in such cases se...

1. The success of locally applied treatments for exotic weed control depends on the effectiveness of the method used and workers’ abilities to find plants within infested sites. Detectability of exotic plants, however, depends on aspects of a plant’s spatial distribution such as the number and size of patches. We lack an explicit examination of how incomplete detection affects the spread of exo...