Computing the tetrahedral angle

Methods for Computing Angle Gathers Using RTM

The Tetrahedral Golay Code

Forney conjectured the existence of a “normal realization” (NR) for the [24,12,8] Golay code in which the code appears as a tetrahedron, with 6 output channel bits at each of the 4 vertices and 2 state bits carried by each of the 6 edges. Although the conjecture was dashed by Vardy, we here give a quasi-cyclic NR exhibiting tetrahedral symmetry, confirming the common wisdom that Forney is never...

Dosimetric Effect Resulting From the Collimator Angle, the Isocenter Move, and the Gantry Angle Errors

Introduction: Dose distribution can be affected by diverse parameters, such as beam orientations, and collimator angles. These parameters should respect and maintain the international recommended levels during the realization of the quality assurance protocols of linear accelerators. This study aimed at evaluating the dosimetric effects on treatment quality considering...

The Tetrahedral Digital Waveguide Mesh

The 2D digital waveguide mesh [7, 8] has proven to be e ective and e cient in the modeling of musical membranes and plates, particularly in combination with recent simpli cations in modeling sti ness [6], nonlinearities [5], and felt mallet excitations [5]. The rectilinear 3D extension to the mesh had been suggested [8], and has been applied to the case of room acoustics [2]. However, it requir...

Tetrahedral Curves

A tetrahedral curve is a space curve whose defining ideal is an intersection of powers of monomial prime ideals of height two. It is supported on a tetrahedral configuration of lines. Schwartau described when certain such curves are ACM, namely he restricted to curves supported on a certain four of the six lines. We consider the general situation. We first show that starting with an arbitrary t...