In this work we develop a new quadratic placement technique where we prematurely abort the linear system solver to save runtime. This has low impact in the placement flow due to the expand-contract phenomena intrinsic to the ICCG solver outlined in this paper. A coloring scheme for placement useful for comparing visually placement results is described. The coloring scheme then is used to create...

In stress analysis applications emphasis is placed on careful determination of the stresses for the improvement of design. In nondestructive testing importance is placed on reliability and quality, and as a result of this, observation of surface strains is of interest. Earlier photoelastic studies by El-Ebrashi et al 1-7 concerned, for the most part, two dimensional photoelasticity. In two dime...

Most existing placement algorithms were designed to handle blocks that are rectangular in shape. In this paper, we show how a genetic algorithm (GA) is used to construct an optimal arrangement of two-dimensional rectilinear blocks. Our approach does not require the orientation of each block to be fixed. To transform the placement problem to a GA problem, we devised a decoding technique known as...

background & aims: thuracolumbar unstable fractures (t, l.u.f) are common after spine truma. posterior pedicular fixation is a technique that is use for fixation of these fractures. this study evaluates the accuracy of pedicular screw placement in t, luf with the assistance of plain radiography in operation rooms. materials & methods: this study is a case-control and analytical study. 35 patien...

results the mean distances between the crestal bone and the implant shoulder in group 1 were 1.01, 1.44, and 1.93 mm at the implant placement time, and at the 6 and 12-month postoperative intervals, respectively. in group 2, these distances were 1.35, 1.20, and 1.41 mm, respectively. there were no significant differences in the marginal bone resorption between the two groups (p > 0.05). conclus...