Summary: we consider the different types of software that allow to make calculations for engineering and mathematical problems. Their strengths and weaknesses explored.
Key words: mathematics editor, finite elements method, engineering modeling.
Summary: By consideration of a number of outstanding examples it is shown that wave space resonances are the prime cause of solar and geomagnetic storms and power accidents.
Keywords: space resonant meta-cycles; solar flashes; geomagnetic storms; power accidents.
Summary: The solution of the problem of stresses distribution in shells made of composite material with opening is given. The finite elements method was used. The influence of transversal shear on the stress concentration in the cylindrical transversely isotropic shell with circular opening was investigated.
Key words: stress, shell with circular opening, finite elements method.
Summary: Two methods of determining the localization length of electromagnetic waves in random discrete media is considered.
Key words: localization, random discrete medium, scattering.
