This paper deals with transmission theory of plane electromagnetic waves in free space and in cylindrical regions of arbitrary cross section. Transmission properties of such waves can be expressed very simply in the same terms as the properties of electric waves guided by a pair of parallel wires. The earlier parts of the paper are concerned with general theorems and the latter parts with their...

HELAC-PHEGAS is a FORTRAN based package that is able to compute automatically and efficiently treeorder helicity amplitudes and cross sections for arbitrary scattering processes within the standard electroweak theory and QCD. The algorithm for the amplitude computation, HELAC, exploits the virtues of the Dyson-Schwinger equations. The phase-space generation algorithm, PHEGAS, constructs all pos...

Spectral problems for stationary unidirectional convective flows in vertical heat exchangers at various boundary temperature conditions are considered. The constant gradient on the walls is used as a spectral parameter. exchanger cross-section can be of an arbitrary shape. general properties problem solutions established. Solutions obtained analytical form rectangular and circular cross section...

In this study a methodology for the experimental determination of probabilistic characteristics induced by injection molding short-fibre reinforced composites is presented. This approach based on pattern recognition algorithm fibre detection two-dimensional micrograph. Since fibres are elliptic shape when dealing with arbitrary oriented cross-section, method ellipses used. The stochastic micros...

This paper presents an analytical solution for an orthotropic circular cross section bar with a magnetic coating weakened by multiple arbitrary oriented cracks under Saint-Venant torsion by means of the distributed dislocation technique. At first, the solution of the orthotropic bar with a magnetic coating weakened by a Volterra-type screw dislocation is achieved with the aid of the finite Four...