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Akhishena - slozhnoe ponyatie, oznachayushchee uskorenie razvitiya chelovek na ego puti k ego vysshey Tseli ego sozdaniya. V zhanre smesi fentezi, priklyucheniy s elementami detektiva i sotsialnoy fantastiki predprinyata popytka osoznaniya: Kto takoy chelovek? Dlya chego on prikhodit v etot mir? Kem emu nadlezhit stat? Sozdaetsya novoe oshchushchenie mirozdaniya, osnovannoe na dannykh sovremennoy nauki i drevnikh "taynykh" znaniy, kotorye ne tolko ne protivorechat, no i dopolnyayut drug druga. Vse dannye privedennye v knige mozhno proverit samostoyatelno. I... soglasitsya ili oprovergnut.

Among the wide diversity of nonlinear mechanical systems, it is possible to distinguish a representative class of the systems which may be characterised by the presence of threshold nonlinear positional forces. Under particular configurations, such systems demonstrate a sudden change in the behaviour of elastic and dissipative forces. Mathematical study of such systems involves an analysis of equations of motion containing large-factored nonlinear terms which are associated with the above threshold nonlinearity. Due to this, we distinguish such discontinuous systems from the much wider class...

This monograph addresses the systematic representation of the methods of analysis developed by the authors as applied to such systems. Particular features of dynamic processes in such systems are studied. Special attention is given to an analysis of different resonant phenomena taking unusual and diverse forms.