prepare a brief technical paper on this topic.

A recent trend in sheet-metal forming is to provide a specially-textured surface finish that develops small pockets to aid lubricant entrainment. Perform a literature search on this technology, and prepare a brief technical paper on this topic.


This is a valuable assignment, as it encourages the student to conduct a literature review.

This is a topic where significant research has been done, and a number of surface textures

are available. A good starting point is to obtain the following paper:

Hector, L.G., and Sheu, S., “Focused energy beam work roll surface texturing science and

technology,” J. Mat. Proc. & Mfg. Sci., v. 2, 1993, pp. 63-117.

find the cost of your paper

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….