Organizing Committee

Organizing Committee.

Investigation of the size of the fracture process zone and the cleavage stress in cracked steel parts

The study is devoted to the development of methods for predicting the brittle fracture of a steel part with a crack. To describe the limit state of the fracture process zone, a mathematical model of the fracture process zone in an elastic–plastic stress state and the generalized brittle fracture theory have been used. The cleavage stress and the size of the fracture process zone are used as parameters for the fracture toughness of the material. A finite element analysis approach was developed to determine these parameters by considering the elastic–plastic stress state of cracked specimens. An analytical procedure for calculating the above parameters for low‐carbon and low‐alloy steels is given. The proposed models allow the analytical calculation of critical values of the stress intensity factor for specimens with cracks at negative temperatures. The development of this study is linked to the improvement of the technology for determining the physical strength criteria of materials. The application of the proposed models makes it possible to create a methodology for predicting crack resistance of welded structures of arctic design considering their geometry and structural and technological characteristics.

The Technique of Verbalizing: Anatoly Vasiliev and His Theater of Dissonant Dialogues

This article examines the aesthetics of an important contemporary Russian theater director, Anatoly Vasiliev, who founded the School of Dramatic Art (SDA) in Moscow. Besides his most well‐known stagings of Viktor Slavkin’s Cerceau and Luigi Pirandello’s Six Characters in Search of an Author at the Taganka Theater in the 1980s, Vasiliev’s adaptations of novels and epic poetry have remained in his repertoire for several years at a time. Anatoly Vasiliev’s style of adaptations of classic literature re‐activates the classic texts in exciting, vibrant new ways. My essay provides a detailed account of both the literary inspiration and theoretical approaches of Vasiliev’s aesthetic practice in the context of one case study, Vasiliev’s performance From Onegin’s Journey (1996 and ongoing). Thus, my article addresses problems of representation of the novel‐in‐verse on stage, and the relations between literary studies and Performance Studies. In addition to discussing the form of Pushkin’s novel in verse, my paper makes many references to important literary theory by Mikhail Bakhtin. There is a particular device that Vasiliev has coined as his method of adaptation, and its inspiration can be traced to the ideas of the Russian Formalist school and Mikhail Bakhtin. In discussing the influence of Bakhtin’s theory of the novel on Vasiliev’s method of theatrical adaptation, I also bring attention to understudied writings by Mikhail Bakhtin on the author’s perspective on the character’s role, audience reception in performance space, and theater in the 1920’s and 1930’s.

Erratum to: Autumn Migration of Greater Noctule Bat (Nyctalus Lasiopterus): through Countries and over Mountains to a New Migration Flight Record in Bats

Autumn Migration of Greater Noctule Bat (Nyctalus Lasiopterus): through Countries and over Mountains to a New Migration Flight Record in Bats

For the first time, using GPS-GSM trackers, long-term seasonal flights of greater noctule bat (Nyctalus lasiopterus) from summer habitats in Russia to wintering areas in Europe are recorded. One of the seasonal migratory flights is a record distance for bats (2515 km). The maximum daily flight was 445 km. One of the animals abruptly changed the direction of migration from southwest to north on the third day of flight after crossing the Kursk magnetic anomaly.

Erratum to: Dust Particles in Space: Opportunities for Experimental Research

Improved vectorization of OpenCV algorithms for RISC-V CPUs

The development of an open and free RISC-V architecture is of great interestfor a wide range of areas, including high-performance computing and numericalsimulation in mathematics, physics, chemistry and other problem domains. Inthis paper, we discuss the possibilities of accelerating computations onavailable RISC-V processors by improving the vectorization of several computervision and machine learning algorithms in the widely used OpenCV library. It isshown that improved vectorization speeds up computations on existing prototypesof RISC-V devices by tens of percent.

GRASIAN: Towards the first demonstration of gravitational quantum states of atoms with a cryogenic hydrogen beam

At very low energies, a light neutral particle above a horizontal surface canexperience quantum reflection. The quantum reflection holds the particleagainst gravity and leads to gravitational quantum states (GQS). So far, GQSwere only observed with neutrons as pioneered by Nesvizhevsky and hiscollaborators at ILL. However, the existence of GQS is predicted also foratoms. The GRASIAN-collaboration pursues the first observation and studies ofGQS of atomic hydrogen. We propose to use atoms in order to exploit the factthat orders of magnitude larger fluxes compared to those of neutrons areavailable. Moreover, recently the qBounce collaboration, performing GQSspectroscopy with neutrons, reported a discrepancy between theoreticalcalculations and experiment which deserves further investigations. For thispurpose, we set up a cryogenic hydrogen beam at 6 K. We report on ourpreliminary results, characterizing the hydrogen beam with pulsed laserionization diagnostics at 243 nm.

Modelagem e simulação da secagem convectiva de materiais alimentícios via método de elementos finitos

Prevalence of choroidal nevi in patients with central serous chorioretinopathy