We propose two variable weighted iterative reconstruction algorithms (VW-ART and VW-OS-SART) to improve the algebraic reconstruction technique (ART) and simultaneous algebraic reconstruction technique (SART) and establish their convergence. In the two algorithms, the weighting varies with the geometrical direction of the ray. Experimental results with both numerical simulation and real CT data ...

In this manuscript, a new method is proposed to provide a perfect tracking of the supercavitation system based on a new two-state model. The tracking of the pitch rate and angle of attack for fin and cavitator input is of the aim. The pitch rate of the supercavitation with respect to fin angle is found as a non-minimum phase behavior. This effect reduces the speed of command pitch rate. Control...

In this paper we describe a new parallel iterative technique to solve a set of linear equations. The technique can be applied to any serial iterative scheme and involves pipelining sllccessive iterations. We give an example of this technique by modifying the classical successive Qverrelaxation method (SOR). The algorithm is implemented on a Sequent Balance 21000 and the experimental results are...