Lagrangian and Eulerian velocity structure functions in hydrodynamic turbulence

The Lagrangian and Eulerian transversal velocity structure functions of fully developed fluid turbulence are found basing on the Navier-Stokes equation. The structure functions are shown to obey the scaling relations inside the inertial range. The scaling exponents are calculated analytically without using dimensional considerations. The obtained values are in a very good agreement with recent numerical and experimental data.Comment: 4 pages, 1 figur

The theory of peripheral capitalism: on the applicability of the Latin American model to the Baltic States; an attempt at an inter-disciplinary analysis

The relevance of this study of post-Soviet transition lies in the focus on the technically theoretical problems that are nevertheless the key to understanding regional development processes in the East of the Baltic Sea. The research aims to verify the theory of peripheral capitalism as applied to the Baltic States. The first theoretical objective is to draw a distinction between the ideas of modernisation and transformation in a regional context. The second objective is to adjust the theory of peripheral capitalism to smaller states. To study the features of the transformation of economic and political systems in the Baltics, this article conducts comparative analysis. Systemic analysis and the principles of theoretical and empirical analysis are used as well. Building on this work, the study identifies the deficiencies of the theoretical and methodological potential of transition studies. These include claims that the theoretical and methodological potential of transition as applied to post-Socialist and post-Soviet Europe has been completely fulfilled. Geographical differences between Latin America and the Baltic States are so obvious that they eclipse economic similarities between the processes and development models characteristic of the two regions of the world. An analysis of current developments in Latin America makes it possible to forecast the economic and, to a degree, political consequences of the trends that are just emerging in the Baltics. This article seeks to prove the above thesis

Diffuse ferroelectric phase transition in SrTiO3-BiScO3 system ceramics

Ceramic samples of the (1–x)SrTiO3–(x)BiScO3 system with x = 0, 0.05, 0.1, 0.2, 0.3, 0.4, and 0.5 have been synthesized for the first time. X-ray diffraction data showed that the samples with x = 0.2, 0.3, and 0.4 at room temperature comprise the mixture of two phases: (i) cubic nonpolar phase with Pm3m structure and (ii) tetragonal polar phase with P4mm structure. The temperature dependences of permittivity and dielectric loss tangent of these samples exhibit anomalies characteristic of ferroelectrics with diffuse phase transitionsyesBelgorod State Universit

Suppression of turbulent dynamo in time irreversible turbulence

The conventional theory of magnetic field generation in a turbulent flow considers time-reversible random flows. However, real turbulent flows are known to be time irreversible: the presence of energy cascade is an intrinsic property of turbulence. We generalize the 'standard' model to account for the irreversibility. We show that even small time asymmetry leads to significant suppression of the dynamo effect at low magnetic Prandtl numbers, increases the generation threshold and may even make generation impossible for any magnetic Reynolds number. We calculate the magnetic energy increment as a function of the parameters of the flow