Calculate the average cohesion, friction angle, and unit weight of the slope and foundation soil.

A homogeneous silty sand embankment is built on soft clay. The soil

profile is shown in Figure 5.42. A potential critical slip surface is also

shown.

(1) Use the ordinary method of slices to determine the FS on the

assumed failure plane.

(2) Use Bishop’s simplified method of slices to determine the FS on the

assumed failure plane and compare the FS with the one obtained

in (1).

(3) Calculate the average cohesion, friction angle, and unit weight of

the slope and foundation soil.

(4) Use Taylor’s chart to determine the minimum FS of the slope using

the parameters obtained in (3) (Figure 5.42).

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Explain why attenuation is not a big problem in PET.

Consider a 2-D object consisting of two triangle compartments, as shown in Figure P9.4. Suppose a solution containing a 511 KeV gamma ray emitting radionuclide with concentration f = 0.5….

Give the mean and the variance of the reconstructed image, mean[ˆ f(x, y)] and var[ˆ f(x, y)].

Ignoring the inverse square law and attenuation, an approximate reconstruction for SPECT imaging is given by where c˜() =  {||W()} and W() is a rectangular windowing filter that cuts off at = 0…..

Find the numerical responses in each to an event in crystal C(4, 6).

Suppose a PET detector comprises four square PMTs (arranged as a 2 by 2 matrix) and a single BGO crystal with slits made in such a way that it is….