A Correlation Relaxation (C-R) algorithm for computing wind velocities from satellite images was recently developed by the author (Wu 1993). Unlike the traditional maximum cross correlation (MCC) method in which only the MCC position (MCCP) in a correlation coefficient matrix is used to derive a displacement, the new method considers many positions associated with high correlations in the matri...

Rectangular caverns are increasingly used in underground engineering projects, the failure mechanism of rectangular cavern wall rock is significantly different as a result of the cross-sectional shape and variations in wall stress distributions. However, the conventional computational method always results in a long-winded computational process and multiple displacement solutions of internal re...

The normal sound absorption coefficients of two different test objects in an impedance tube are measured with two different methods: The standing wave ratio method (ISO 10534-1:1996) and the transfer function method (ISO 10534-2:1998). From the latter is the specific acoustic impedance ratio calculated. The test objects are two cellular plastics: AC 30 S and FIRE 30 VF (both are 30 mm thick), t...

A relatively new imaging technique, q-space imaging (QSI), uses multiple b-values to generate displacement profiles of diffusing molecules. Unidentified bright objects observed in children affected by neurofibromatosis have been reported to display increased apparent diffusion coefficient values compared to normal-appearing brain regions. To our knowledge this is first report of the findings of...

In cell biology, time-resolved fluctuation analysis of tracer particles has recently gained great importance. One such method is the local mean-square displacement (MSD) analysis, which provides an estimate of two parameters as functions of time: the exponent of growth of the MSD and the diffusion coefficient. Here, we study the joint and marginal distributions of these parameters for Brownian ...

The effect of hydrodynamic interactions on the spreading of clusters of colloid particles in a quasi-one-dimensional channel is analyzed both experimentally and theoretically. An n-particle cluster spreading diffusion coefficient is defined, in terms of the displacement Deltax(t) in time t, by D(n)[triple bond]<[Sigma(i=1)(n)Deltax(i)(t)](2)>/2nt, where the average is taken over all groups of n...

Displacement control is critical to the design of retaining walls, especially in urban areas, avoid any potential damage adjacent structures during excavations. In this study, model tests are first conducted investigate stress and deformation mechanisms an embedded cantilevered (ECR) wall The development top displacement active passive earth pressures acting on ECR walls excavations studied. Up...

We have investigated an LRS Bianchi Type I models with bulk viscosity in the cosmological theory based on Lyra’s geometry. A new class of exact solutions have been obtained by considering a time-dependent displacement field for a constant value of the deceleration parameter and viscosity coefficient of bulk viscous fluid is assumed to be a power function of mass density. The physical behaviour ...