Reliable measures of speaker positions are needed for computational perception of human activities taking place in a smart-room environment. In this work, we investigate the effect of talkers head orientation on the accuracy of acoustical source localization techniques and its relation with the talker directivity pattern and room reverberation. Two different representative speaker localization ...

High strength, wrought 7xxx (Al-Zn-Mg) and Al-Li based alloys show a propensity for fatigue macroscopic crack deflections aligned along grain boundaries. The present work reports a study on a 3 rd generation Al-Li based alloy in the form of a thick AA2297 (Al-Cu-Li alloy) plate, where it was found that although the lithium containing material may indeed be more susceptible to mixed mode grain b...

The use of long-axis images in cardiac MRI segmentation is essential in order to locate the valves and delineate the ventricles’ volume accurately. However, depending on the imaging protocol used, long-axis images do not always provide enough support for straightforward segmentation. We show that it is possible to use both short-axis and long-axis images for segmentation, even in cases where th...

Modulus of elasticity of flapper valve material is an important parameter for compressor design since it can affect efficiency and life time of the compressor. Modulus of elasticity is usually considered as a material constant. Actually, it can vary with material orientations and conditions and even environments such as temperature will also affect this value. Therefore, the parameters that can...

We show that adding a low-contrast texture stimulus that is far below its own detection threshold to an ambiguously oriented high-contrast texture can produce an easily perceived global orientation. When such a low-contrast (e.g., 0.1%) test texture and a high-contrast (e.g., 2%) amplifier texture are interleaved, the effective strength for global orientation detection closely approximates the ...

Functional magnetic resonance imaging (fMRI) has become a ubiquitous tool in cognitive neuroscience. The technique allows noninvasive measurements of cortical responses in the human brain, but only on the millimeter scale. Because a typical voxel contains many thousands of neurons with varied properties, establishing the selectivity of their responses directly is impossible. In recent years, tw...

abstract objective: this study was carried out for investigating the religion orientation relationship with coping with diabetes in type 2 diabetic patients in yazd, iran. the present study is a kind of scientific-comparative description. the research subjects comprised of all type 2 diabetic patients admitted to the hospitals in yazd. materials and methods: the study sample was consisted of 16...

The present study aims to investigate the effect of crystallographic orientation on thekinetics of recovery in deformed samples of the Al-0.1%Mn binary alloy using vertexdynamics simulations of subgrain growth.In order to characterize the recovery kinetics experimentally, a polycrystalline bar ofthe alloy was cold rolled to a true strain of 3.96. Samples extracted from the r...

This report addresses the issues involved in developing a robust segmentation technique capable of finding the location and orientation of the cervical vertebrae in x-ray images. This technique should be invariant to rotation, scale, noise, occlusions and shape variability. A customized approach, based on the Generalized Hough transform (GHT), that captures shape variability and exploits shape ...