We present new results both from numerical simulations using the Swift–Hohenberg model and from experiment for domain chaos near the onset of rotating Rayleigh–Bénard convection. Using both global Fourier analysis and local wave director (LWD) analysis, the domain chaos patterns were characterized. Several image analysis techniques are discussed and were applied to the director field obtained f...

In this article, an array processing is described to improve the quality of sound field analysis, which aims to extract spatial properties of a sound field. In this domain, the notion of spatial aliasing inevitably occurs due to the finite number of microphones used in the array. It is linked to the Fourier transform of the discrete analysis window, which is constituted of a mainlobe, fixing th...

In the clinical analysis and processing for EEG, because of the difference of ages and pathology, it is possible to appear abnormal waves related with pathology. Also, the restrain of normal rhythms could be abnormal. But at present doctors estimate if certain rhythm is restrained only by using the method of eyeballing or by some simply analysis methods in clinical EEG detection, which will ine...

the existing theory for wave propagation through a soil layer are not compatible with the real soil layers because in the theory the layers are flat and the sub-layers are parallel, while in real the soil layers are not flat and they may not be parallel. thus, wave propagations through a corrugated interface are so important. in this paper, a two-dimensional sh-wave propagation through a corrug...

A submerged horizontal plate type breakwater is pointed out as an efficient wave protection device for cage culture in marine fishery. In order to reveal the wave elimination principle of this type breakwater, boundary element method is utilized to investigate this problem. The flow field and the trajectory of water particles are studied carefully. The flow field analysis shows that: the intera...

This paper presents a flexible voice morphing method, which is based on a conversion using a linear combination of the vocal tract area functions estimated from speech signals. The method focuses on the continuity of the phonological identity of the overall interpolated area. The main features of the method are 1) to separate characteristics of the vocal tract resonances from those of glottal s...

purpose: in recent years high explosive bomb attacks have been increasingly directed against   civil structures by various terrorist organizations. this paper describes a numerical method for   assessing the interaction of high explosive air blast within the complex geometrical type of a   congested urban environment.   materials and methods: the first step in predicting blast effects on a targ...

To minimize body motions, floating marine structures are often designed with natural frequencies far away from the spectrum of ocean waves. Such design considerations led to a class of deep draft caisson vessels (DDCV or spars). Even so, large resonant responses may still be generated by excitation from nonlinear interactions of waves with body motions. Past experiments indicated that a DDCV ex...

abhar-al asheghin is full of imageries. the active mind of roozbahan has rendered the work with a chain of connected similes . in this paper, inspired by the conceptual metaphor theory and in a framework called as “ domain simile” these similes were studied. in “ domain simile” , the elements of one domain or category are in concordance with elements of another domain;a simile is considered as ...