Theories of turbulent time correlations are applied to compute frequency spectra of sound radiated by isotropic turbulence and by turbulent shear ows. The hypothesis that Eulerian time correlations are dominated by the sweeping action of the most energetic scales implies that the frequency spectrum of the sound radiated by isotropic turbulence scales as ! for low frequencies and as ! 4=3 for hi...

Cumulative absolute velocity (CAV), Arias intensity (AI), and characteristic intensity (CI) are measurable characteristics to show collapse potential of structures, evaluation of earth movement magnitude, and detection of structural failure in an earthquake. In this paper, parameters which describe three characteristics of ground motion have been investigated by using wavelet transforms (WT). I...

  ABSTRACT  Background: The brain response to temporal frequencies (TF) has been already reported, but with no study reported for different TF with respect to various spatial frequencies (SF).  Materials and Methods: fMRI was performed by 1.5T GE-system in 14 volunteers during checkerboard, with TFs of 4, 6, 8 and 10Hz in low and high SFs of 0.5 and 8cpd.  Results: Average percentage BOLD signa...

background and objectives: quality of work life is an increasingly important organizational factor in health facilities. most studies on quality of work life in hospitals have been conducted in developed countries. the few studies performed in developing countries have targeted low- and middle-performance hospitals, and they have not explored the relationship between quality of work life and ot...

Robustly manipulating waves on subwavelength scales can be achieved by, first, designing a structure with band gap and, second, introducing defect so that eigenfrequencies fall within the gap. Such frequencies are well known to correspond localized modes. We study one-dimensional array of resonators, prove there is gap, and show by dislocation we place modes at any point complement this analysi...