The classical reception, royal image and strengthening the king’s power in early modern Poland (1520–1572)

My thesis focuses on the interconnection between the phenomenon of the classical reception—that is the reception of the classical Greek–Roman antiquity and its legacy—and representation of the King (royal imagology) in early modern Polish Kingdom in the sixteenth century. For the analysis of these concepts, my study examines the figure of Sigismund II Augustus Jagiellon (1520–1572), the last Jagiellonian King of Poland and the Grand Duke of Lithuania and the first King of the Polish–Lithuanian Commonwealth. His reign was marked by dissemination of the classical images and figures in literature and art. My research stresses the hypothesis that the classical images and symbols were regularly used in shaping and promotion the image of Sigismund Augustus. In particular, these classical symbols deriving from the antiquity strengthened the image of the royal authority in complicated circumstances, such as confrontation with the nobility, reformist Executionist movement, and preparation of the Polish–Lithuanian Union. Promotion of the royal image was made in several ways: via direct visual and textual propaganda and through connotations and context that arose simultaneously. My thesis argues that Sigismund Augustus was regularly compared with or instructed based on the prominent examples of the classical antiquity—Cyrus, Alexander the Great, Octavianus—and this contributed to strengthening of his political positions in early modern Poland. Methodology applied in my research includes art historical and historical methods, literature analysis, involves comparative analysis and broader European context, analysing early modern Central-Eastern Europe as an integral element of Renaissance European politics and culture.https://www.ester.ee/record=b5380630*es

Analytic Model of the Universal Structure of Turbulent Boundary Layers

Turbulent boundary layers exhibit a universal structure which nevertheless is rather complex, being composed of a viscous sub-layer, a buffer zone, and a turbulent log-law region. In this letter we present a simple analytic model of turbulent boundary layers which culminates in explicit formulae for the profiles of the mean velocity, the kinetic energy and the Reynolds stress as a function of the distance from the wall. The resulting profiles are in close quantitative agreement with measurements over the entire structure of the boundary layer, without any need of re-fitting in the different zones.Comment: 5 pages, 4 figs, JETP Letters, submitted. Comparison with the latest DNS dat

An Extensive Game-Based Resource Allocation for Securing D2D Underlay Communications

Device-to-device (D2D) communication has been increasingly attractive due to its great potential to improve cellular communication performance. While resource allocation optimization for improving the spectrum efficiency is of interest in the D2D-related work, communication security, as a key issue in the system design, has not been well investigated yet. Recently, a few studies have shown that D2D users can actually serve as friendly jammers to help enhance the security of cellular user communication against eavesdropping attacks. However, only a few studies considered the security of D2D communications. In this paper, we consider the secure resource allocation problem, particularly, how to assign resources to cellular and the D2D users to maximize the system security. To solve this problem, we propose an extensive game-based algorithm aiming at strengthening the security of both cellular and the D2D communications via system resource allocation. Finally, the simulation results show that the proposed method is able to efficiently improve the overall system security when compared to existing studies

Optimal design of gas turbines flow paths considering operational modes

A new technique for multi-parameter optimization of gas turbines flow paths considering a variable mode for their operation is presented. It allow s the estimation of the influence of flow path optimization on performance parameters of gas-turbine units, such as power, efficiency, and fuel consumption. An algorithm for turbine flow path multi-criteria optimization that takes into account the gas-turbine unit operation mode is shown. Approaches to speed up the optimization process are described. Using this technique GT-750-6M low pressure turbine flow path optimization based on real working loads during one year is carried out and the results are analyzed. Due to optimization the unit efficiency was improved at all operating modes. The total fuel economy for considered period makes 50.831 t

Interaction of Kelvin waves and nonlocality of energy transfer in superfluids

We argue that the physics of interacting Kelvin Waves (KWs) is highly nontrivial and cannot be understood on the basis of pure dimensional reasoning. A consistent theory of KW turbulence in superfluids should be based upon explicit knowledge of their interactions. To achieve this, we present a detailed calculation and comprehensive analysis of the interaction coefficients for KW turbuelence, thereby, resolving previous mistakes stemming from unaccounted contributions. As a first application of this analysis, we derive a local nonlinear (partial differential) equation. This equation is much simpler for analysis and numerical simulations of KWs than the Biot-Savart equation, and in contrast to the completely integrable local induction approximation (in which the energy exchange between KWs is absent), describes the nonlinear dynamics of KWs. Second, we show that the previously suggested Kozik-Svistunov energy spectrum for KWs, which has often been used in the analysis of experimental and numerical data in superfluid turbulence, is irrelevant, because it is based upon an erroneous assumption of the locality of the energy transfer through scales. Moreover, we demonstrate the weak nonlocality of the inverse cascade spectrum with a constant particle-number flux and find resulting logarithmic corrections to this spectrum

Universal Model of Finite-Reynolds Number Turbulent Flow in Channels and Pipes

In this Letter we suggest a simple and physically transparent analytical model of the pressure driven turbulent wall-bounded flows at high but finite Reynolds numbers Re. The model gives accurate qualitative description of the profiles of the mean-velocity and Reynolds-stresses (second order correlations of velocity fluctuations) throughout the entire channel or pipe in the wide range of Re, using only three Re-independent parameters. The model sheds light on the long-standing controversy between supporters of the century-old log-law theory of von-K\`arm\`an and Prandtl and proposers of a newer theory promoting power laws to describe the intermediate region of the mean velocity profile.Comment: 4 pages, 6 figs, re-submitted PRL according to referees comment

FINANCIAL REPORTING AS PART OF THE SYSTEM OF INFORMATION SUPPLY OF MODERN ENTERPRISE MANAGEMENT

This article presents financial statements as the main source of information support of modern business management. It is noted that financial reporting is a set of reporting forms, compiled on the basis of financial accounting data in order to provide external and internal users with generalized information about the financial condition of the enterprise in a convenient and understandable way for these users to take certain business decisions. The main aspects of accounting information, which serves as information support for making management decisions, are determined in this article. Attention is focused on the importance of internal reporting, which is formed at the enterprise with the purpose of operative provision of objective management information in order to satisfy information needs of internal users, whose management decisions significantly affect the results of enterprise activities. It considers and summarizes the theoretical aspects of the adaptation of financial reporting in Ukraine in accordance with the terms, principles and requirements of International Financial Reporting Standards. It is noted that the choice of methods of IFRS reporting depends first of all on the purposes of further use, periodicity of preparation, qualification of specialists. The advantages and disadvantages of parallel accounting, which makes possible to promptly generate reports according to international standards for the needs of both internal and external users, are determined. Considering the importance of accounting policy as a set of rules adopted by the enterprise for the preparation and presentation of financial statements, a list of the main sections of the Order on Accounting Policy is provided in this article. Also, the article considers and summarizes the main features of the presentation of information in the financial statements according to international standards, which characterize it as accessible to a wide range of consumers and allow making objective and balanced management decisions

Energy Spectra of Quantum Turbulence: Large-scale Simulation and Modeling

In $2048^3$ simulation of quantum turbulence within the Gross-Pitaevskii equation we demonstrate that the large scale motions have a classical Kolmogorov-1941 energy spectrum E(k) ~ k^{-5/3}, followed by an energy accumulation with E(k) ~ const at k about the reciprocal mean intervortex distance. This behavior was predicted by the L'vov-Nazarenko-Rudenko bottleneck model of gradual eddy-wave crossover [J. Low Temp. Phys. 153, 140-161 (2008)], further developed in the paper.Comment: (re)submitted to PRB: 5.5 pages, 4 figure

Finite-Dimensional Turbulence of Planetary Waves

Finite-dimensional wave turbulence refers to the chaotic dynamics of interacting wave `clusters' consisting of finite number of connected wave triads with exact three-wave resonances. We examine this phenomenon using the example of atmospheric planetary (Rossby) waves. It is shown that the dynamics of the clusters is determined by the types of connections between neighboring triads within a cluster; these correspond to substantially different scenarios of energy flux between different triads. All the possible cases of the energy cascade termination are classified. Free and forced chaotic dynamics in the clusters are investigated: due to the huge fluctuations of the energy exchange between resonant triads these two types of evolution have a lot in common. It is confirmed that finite-dimensional wave turbulence in finite wave systems is fundamentally different from kinetic wave turbulence in infinite systems; the latter is described by wave kinetic equations that account for interactions with overlapping quasi-resonances of finite amplitude waves. The present results are directly applicable to finite-dimensional wave turbulence in any wave system in finite domains with 3-mode interactions as encountered in hydrodynamics, astronomy, plasma physics, chemistry, medicine, etc.Comment: 29 pages, 21 figures, submitted to PR