Suchergebnisse

The novel approach to parametric topology of the 2D compressor airfoil was tested at multi-criteria optimisation problem for high speed subsonic application. Some results regarding the shape of the blade are presented. © 2019 Published under licence by IOP Publishing Ltd. ; The work was supported by Act 211 Government of the Russian Federation, contract №02.A03.21.0006.

The generation of meaning is the primary precondition for acting and thinking. The essays in this volume contribute to a discourse on this matter with a decentred, globalized world in mind. The notions civilization, humanism and modernity - far from being exclusively Western ideas - may facilitate joint efforts of reflecting on the universality of current human conditions, particularly since such reflexion is possible from particular cultural perspectives. Modernity presents us with a second Axial Time in which the quest for a plural, but shared, humane world is the challenge.

The application of empirical, phenomenological deformation and energy theories of metal fracture in relation to the process of cross-wedge rolling is considered. A distinctive feature of cross-wedge rolling in comparison with other metal pressure treatment processes is the complex stress-strain state in the deformation focus and the possibility of opening the axial cavity. The existing empirical criteria of destruction are given. The scheme of a new calibration test based on crosswedge rolling and the fracture criterion proposed by Zbigniew Pater are considered. It is shown that the Zbigniew Pater's empirical criterion for the destruction of Zbigniew Pater provides a correct determination of the moment of opening the cavity during cross-wedge rolling. The improved phenomenological deformation theory is based on the theory of fracture developed by V. L. Kolmogorov. It is proposed to evaluate the plasticity of the metal depending on the stress state in the form of two independent invariants of the stress tensor: the average stress and the parameter of the third invariant of the stress tensor. The dependence of the limit value of accumulated deformation, at which destruction occurs, on the stress state is constructed in the form of a plasticity surface. The phenomenological deformation criterion of metal destruction during plastic deformations allows us to determine the moment of opening the cavity during cross-wedge rolling and the plasticity resource of the metal.

This book introduces readers to the concept of the Axial Age and its relevance for a world in crisis. Scholars have become increasingly interested in philosopher Karl Jaspers' thesis that a spiritual revolution in consciousness during the first millennium BCE decisively shaped world history. Axial ideas of transcendence develop into ideologies for world religions and civilizations, in turn coalescing into a Eurasian world-system that spreads globally to become the foundation of our contemporary world. Alongside ideas and ideologies, the Axial Age also taught spiritual practices critically resisting the new scale of civilizational power: in small counter-cultural communities on the margins of society, they turn our conscious focus inward to transform ourselves and overcome the destructive potentials within human nature. Axial spiritualities offer humanity a practical wisdom, a profound psychology, and deep hope: to transform despair into resilience, helping us face with courage the ecological and political challenges confronting us today