Low amplitude (linear regime) cosmic density fluctuations lead to spatial variations in the locally measurable value of H0 (denoted as HL), δH ≡ (HL −H0)/H0, which are of order 3− 6% (95% confidence interval) in a sphere of 200 hMpc in diameter, and of order 1−2% in a sphere of 400 hMpc in diameter, for three currently viable structure formation models (tilted CDM, ΛCDM, and open CDM) as normal...

Simultaneous observations of the solar wind velocity as measured at the Pioneer 9 and Ogo 5 spacecraft during five solar rotations in 1968 and 1969 are presented. During this time, Pioneer 9 was traveling in toward the sun to approximately 0.7 AU while the earth orbiter Ogo 5 was spending long periods in the interplanetary medium. A comparison of the 3-hour averages of solar wind velocity obtai...

Scattering of electromagnetic waves by turbulence is considered. It is shown that Doppler velocity (the ratio of Doppler shift and Bragg wave number) includes two terms: The first is the mean radial velocity in the scattering volume, and the second is what we call the “correlation velocity,” caused by a correlation between the fluctuations of velocity and those of refractive index. The correlat...

Introduction: There has been recent interest in the use of MR velocimetery techniques to study flow of hyperpolarized noble gases with the aim of elucidating flow patterns in human airways during inhalation [1-4], although only a couple of in-vivo results have been presented [1,4]. However, all these studies use the phase-contrast (PC) velocimetery method where velocity in a pixel is determined...

Cosmological phase transitions proceed via the nucleation of bubbles that subsequently expand and collide. The resulting gravitational wave spectrum depends crucially on bubble wall velocity. We use holography to compute velocity from first principles in a strongly coupled, non-Abelian, four-dimensional gauge theory. is determined dynamically terms temperature. verify ideal hydrodynamics provid...

Interference, either unintentional (from heterogeneous users in spectrum sharing systems) or intentional (jamming), degrades the performance of existing licensed and unlicensed spectrum services. In particular, interference will be of increased importance in future cognitive radio spectrum sharing systems, which are likely to be based on orthogonal frequency division multiplexing (OFDM). This p...

the mel frequency cepstral coefficients are the most widely used feature in speech recognition but they are very sensitive to noise. in this paper to achieve a satisfactorily performance in automatic speech recognition (asr) applications we introduce a noise robust new set of mfcc vector estimated through following steps. first, spectral mean normalization is a pre-processing which applies to t...

We consider the dynamics of axial velocity and of scalar transport in the stretched-spiral vortex model of turbulent fine scales. A large-time asymptotic solution to the scalar advection-diffusion equation, with an azimuthal swirling velocity field provided by the stretched spiral vortex, is used together with appropriate stretching transformations to determine the evolution of both the axial v...