Explore the vast range of titles available.

Still, we have the same solitude, the same journeys and searching, and the same favorite turns in the labyrinth of literature and history.—Boris Pasternak to Marina Tsvetaeva One of the most compelling episodes of twentieth-century Russian literature involves the epistolary romance that blossomed between the modernist poets Marina Tsvetaeva and Boris Pasternak in the 1920s. Only weeks after Tsvetaeva emigrated from Russia in 1922, Pasternak discovered her poetry and sent her a letter of praise and admiration. Tsvetaeva's enthusiastic response began a decade-long affair, conducted entirely through letters. This correspondence-written across the widening divide separating Soviet Russia from Russian émigrés in continental Europe-offers a view into the overlapping worlds of literary creativity, sexual identity, and political affiliation. Following both sides of their conversation, Catherine Ciepiela charts the poets' changing relations to each other, to the extraordinary political events of the period, and to literature itself. The Same Solitude presents the first full account of this affair of letters and poems from its beginning in the summer of 1922 to its denouement in the 1930s. Drawing on many previously untranslated letters and poems, Ciepiela describes the poets' mutual influence, both in the course of their lives and the development of their art. Neither poet saw any separation between a poet's life and work, and Ciepiela treats each poet's letters and poems as a single text. She discusses the poets' famous triangular correspondence with Rainer Maria Rilke in 1926, and she addresses the profound significance of Tsvetaeva for Pasternak, who is often perceived (mistakenly, Ciepiela asserts) as the more detached partner. Further, this book expands our understanding of poetic modernism by showing how the poets worked through ideas about gender and writing in the context of what they themselves called a literary marriage.

A non-classical model for a Mindlin plate resting on an elastic foundation is developed in a general form using a modified couple stress theory, a surface elasticity theory and a two-parameter Winkler–Pasternak foundation model. It includes all five kinematic variables possible for a Mindlin plate. The equations of motion and the complete boundary conditions are obtained simultaneously through a variational formulation based on Hamilton's principle, and the microstructure, surface energy and foundation effects are treated in a unified manner. The newly developed model contains one material length-scale parameter to describe the microstructure effect, three surface elastic constants to account for the surface energy effect, and two foundation parameters to capture the foundation effect. The current non-classical plate model reduces to its classical elasticity-based counterpart when the microstructure, surface energy and foundation effects are all suppressed. In addition, the new model includes the Mindlin plate models considering the microstructure dependence or the surface energy effect or the foundation influence alone as special cases, recovers the Kirchhoff plate model incorporating the microstructure, surface energy and foundation effects, and degenerates to the Timoshenko beam model including the microstructure effect. To illustrate the new Mindlin plate model, the static bending and free vibration problems of a simply supported rectangular plate are analytically solved by directly applying the general formulae derived.

In response to the frequent accidents caused by freezing-induced deformation of anchor rod support structures in seasonal frozen soil areas, this study proposes a simplified calculation method. Based on the deformation coordination relationship of the slope frost heave soil under the constraint of the frame beam, the initial frost heave force distributed in the beam was obtained. Using the Pasternak double-parameter foundation model, a differential equation for the freezing-induced deformation of the frame columns, accounting for the shear effect of the freezing layer and the anchoring action of the anchor rods, is established. To validate the proposed method, a finite element model is developed using the ABAQUS thermal coupling module. The results demonstrate that the results obtained from the simplified method and numerical simulation solution in this article are basically similar, and about 11% higher than the numerical simulation solution. However, compared with the Winkler foundation model, it can more accurately reflect the distribution law of frost heave displacement of frame columns. And the Winkler foundation model overestimates the frost heave deformation and internal forces by about 21%, indicating that considering the shear effect of the frozen layer can more accurately reflect the actual stress state of the frame columns. In addition, according to the sensitivity analysis of the influencing parameters, it can be concluded that the changes in the spacing between anchor bolts and the frost heave rate of the soil have a more significant impact on the deformation of the frame columns. Consequently, it is crucial to assess the freezing grade of the slope and determine anchor rod positions thoughtfully during the design phase. This research sheds light on the fundamental characteristics of the frame beam anchor structure under the influence of soil frost heave, enhancing calculation precision, and offering valuable scientific insights for practical engineering design.

This article establishes the vibrational behavior of functionally graded plates embedded in a viscoelastic medium. The quasi-3D elasticity equations are used for this purpose. The three-parameter Visco-Winkler-Pasternak model is employed to give the interaction between the viscoelastic foundation and the presented plate. Hamilton’s principle is applied to derive the governing dynamic equations. Many validation examples are presented. Additional benchmark results are tabulated for future comparisons. The effects of various parameters like geometrical, material properties, and viscoelastic foundations on the vibrational frequencies of homogeneous and functionally graded plates are investigated. The frequencies increase as all parameters increase except the functionally graded power-law index for which its increase causes a decrease in the frequency value.

This work explores the fractional-order three-phase lag (TPL) thermoelasticity model to examine how thermal relaxation parameters affect the vibrational behavior of generalized nonlocal thermoelastic nanobeams supported by Pasternak foundations. This research broadens the understanding of nonlocal thermoelastic vibrations in nanoplates and nanobeams. Numerical analysis was used to calculate and visually present the temperature, torque, and displacement distributions. The Laplace transform method facilitated the resolution of the governing equations. A thorough analysis and discussion of the numerical data, supported by graphical representations, detail the effects of the fractional order factor, Pasternak parameters, and various thermoelastic models on the observed fields. The researchers found notable consistency when comparing the resultant beam response and dynamic deflection with earlier studies that applied the Bernoulli–Euler and nonlocal thermoelastic nanobeam theories. This underscores the importance of applied research in uncovering the unique properties of nanotechnology systems during the production of nanoscale materials and structures, which are especially beneficial in multiple industrial fields, particularly in mechanical engineering and materials science.

[...]Ron grabbed his typewriter, locked himself in the women's restroom at the Phi Delt house (this after taping an \"out of order\" sign on the door), and wrote an impassioned letter to the author of Doctor Zhivago. Not only art, language, every language is still more symbolical, but also in the sense of indifferent meaningfulness, in the significance of spiritual energy or activity. Ivar Ivask's review of the English translation of Doctor Zhivago appeared in the Winter 1959 issue of Books Abroad, and four previously unpublished letters from Pasternak to Ivask, dating from 1959-60, were included in the Spring 1970 issue of Books Abroad that contained a symposium in memory of Pasternak on the tenth anniversary of his death.

Purpose This study investigates the free vibration characteristics of a simply supported bi-directional functionally graded nanobeam using the Euler-Bernoulli beam theory. The aim is to understand how various factors influence the vibration behavior of these types of nanobeam. Methods The material properties of the nanobeam are assumed to vary exponentially in the axial direction and follow a power law in the thickness direction. To incorporate small-scale effects, the nonlocal strain gradient theory is utilized. The nanobeam is positioned on a Winkler-Pasternak elastic foundation. Hamilton’s principle is employed to derive the governing equations, considering the physical neutral surface, and the Rayleigh-Ritz method is used to obtain the frequency parameters. Results and Conclusion The accuracy of the obtained results is confirmed through convergence studies and comparison with existing literature in specific cases. The study also analyzes the influence of various factors such as material in-homogeneity constant, material parameter, nonlocal parameter, material length scale parameter, Winkler elastic constant, and Pasternak elastic constant on the frequency parameters. The findings can contribute to the design and optimization of nanoscale devices and structures that utilize bi-directional functionally graded materials. Graphic Abstract

To investigate the longitudinal mechanical response of a pipeline or tunnel under reverse fault dislocation, this paper introduces the two-parameter Pasternak model and the vertical displacement profile equation. The analytical solution for the longitudinal mechanical response of the pipe or tunnel under reverse fault dislocation is obtained by solving the differential equation. The corresponding numerical simulations and model tests have been carried out, and the analytical solutions have been verified by combining the numerical simulation results and model test data. A parametric analysis is presented in which the effects of the shear stiffness of the elastic layer, the coefficient of subgrade reaction, the dip angle, and the ratio of soil thickness to tunnel diameter are investigated. The results show that as the shear stiffness of the elastic layer G increases, the difference between the bending moment and the shear force of the tunnel near the fault trace becomes smaller, and the value of the maximum displacement increases. As the coefficient of subgrade reaction k increases, the maximum deformation location of the tunnel is closer to the fault trace, the difference between the bending moment and the shear force of the tunnel is greater, and the active length decreases. The displacement, bending moment and shear force distributions of the tunnel become closer to the footwall as the dip angle α increases. The increases in the ratio of soil thickness to tunnel diameter H2/D lead to the distance of the maximum displacement position from the fault trace, the difference between the bending moment and the shear force decreases, but the active length increases.HighlightsAnalytical solution is verified for the longitudinal mechanical response of the pipeline or tunnel under reverse fault dislocation.The continuity of foundation deformation and pipeline-foundation nonlinear interactions are considered in the solution.The shear stiffness of the elastic layer G and the ratio of soil thickness to tunnel diameter H2/D have dramatic effects on the tunnel responses.An approach to predict the active length of the pipeline or tunnel under reverse fault dislocation is discussed.

\"Still, we have the same solitude, the same journeys and searching, and the same favorite turns in the labyrinth of literature and history.\"--Boris Pasternak to Marina Tsvetaeva One of the most compelling episodes of twentieth-century Russian.