Dressing Symmetries of Holomorphic BF Theories

We consider holomorphic BF theories, their solutions and symmetries. The equivalence of Cech and Dolbeault descriptions of holomorphic bundles is used to develop a method for calculating hidden (nonlocal) symmetries of holomorphic BF theories. A special cohomological symmetry group and its action on the solution space are described.Comment: 14 pages, LaTeX2

Six-loop ε\varepsilon expansion study of three-dimensional nn-vector model with cubic anisotropy

The six-loop expansions of the renormalization-group functions of $\varphi^4$ $n$-vector model with cubic anisotropy are calculated within the minimal subtraction (MS) scheme in $4 - \varepsilon$ dimensions. The $\varepsilon$ expansions for the cubic fixed point coordinates, critical exponents corresponding to the cubic universality class and marginal order parameter dimensionality $n_c$ separating different regimes of critical behavior are presented. Since the $\varepsilon$ expansions are divergent numerical estimates of the quantities of interest are obtained employing proper resummation techniques. The numbers found are compared with their counterparts obtained earlier within various field-theoretical approaches and by lattice calculations. In particular, our analysis of $n_c$ strengthens the existing arguments in favor of stability of the cubic fixed point in the physical case $n = 3$

Elevated Plasma Levels of Vascular Endothelial Growth Factor and Hepatocyte Growth Factor: Clinical Significance and Correlation with Tumor Burden in Patients with Chronic Myeloid Leukemia

Angiogenesis is an established indispensable process in the development and metastasis of solid tumors. Its significance in the pathogenesis and progression of hematological malignancies is still to be elucidated. Data have recently been accumulated about its role in chornic myeloid leukemia (CML). The aims of our study were: (I) to assess vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF) plasma levels in patients with newly diagnosed, untreated and treated CML; (II) to analyze the differences of their levels in varying phases of the disease; (III) to analyze VEGF and HGF correlation with some markers reflecting the tumor burden as well as the progression of the disease. Plasma levels of VEGF and HGF were determined by ELISA in 16 patients with CML and 21 healthy individuals. VEGF and HGF levels were followed-up in 6 patients according to the progression of the disease or the treatment regimen. All the patients with CML showed significantly higher levels of VEGF and HGF when compared to the control group. We found a significant correlation between HGF and leukocytes, LDH, splenomegaly and blast percentage in the peripheral blood. Significant correlation was found between VEGF and platelets, LDH and leukocytes. Our data indicate that CML are highly associated with elevated plasma levels of VEGF and HGF, wich corroborates the thesis of its angiogenic dependency. Likewise, the present study suggests that measurements of VEGF and HGF may be useful for assessing disease activity and progression as well

Prospects for the implementation of the "digital government" project of the Russian Federation

The theoretical foundations for the development of the digital economy and e-government are considered in this article. The main objectives of Russia's transition to the digital economy are listed. The relevance of the development of the digital government concept is considered. The indicators of the current level of state development in the framework of digitalization and the formation of e-government are analyzed. The main problems, the solution of which makes the implementation of the digital government project of the Russian Federation possible, are singled out. Digital economy development is associated not only with the progress of the information technology and innovation industry, but also with the improvement of the labor market, where new jobs, professions and personnel are created. In this regard, there is a rapid process of the foundation of society, where one job becomes low-paid, and new professions allow one to receive a personal income at the level of top managers of small and medium-sized enterprises.peer-reviewe

O impacto da abordagem competitiva na motivação dos alunos no esporte

This study is devoted to the description of the competitive method as an effective way to increase the motivation of today's students in physical education classes in higher education. The purpose of the study is to assess the impact of the competitive method on the level of students' motivation in sports, positive interest for studying the subject. Allocation of types of motivation allowed the author to evaluate and trace the dynamics of changes in the level of motivation to the sport. The level of motivation was determined using the author's methodology, developed on the basis of scientific literature. The basis of the study is the Branch of IUT in the city of Surgut, the department of Natural Science and Humanities, during physical education classes. The researcher has shown that the use of a competitive method in physical education classes can increase motivation, activates the interest of students.Este estudio está dedicado a la descripción del método competitivo como una forma efectiva de aumentar la motivación de los estudiantes de hoy en las clases de educación física en la educación superior. El propósito del estudio es evaluar el impacto del método competitivo en el nivel de motivación de los estudiantes en los deportes, interés positivo para estudiar la materia. La asignación de los tipos de motivación permitió al autor evaluar y rastrear la dinámica de los cambios en el nivel de motivación del deporte. El nivel de motivación se determinó utilizando la metodología del autor, desarrollada sobre la base de la literatura científica. La base del estudio es la Rama de IUT en la ciudad de Surgut, el departamento de Ciencias Naturales y Humanidades, durante las clases de educación física. El investigador ha demostrado que el uso de un método competitivo en las clases de educación física puede aumentar la motivación, activa el interés de los estudiantes.Este estudo é dedicado à descrição do método competitivo como uma forma eficaz de aumentar a motivação dos alunos de hoje em aulas de educação física no ensino superior. O objetivo do estudo é avaliar o impacto do método competitivo sobre o nível de motivação dos alunos em esportes, interesse positivo para estudar o assunto. A alocação de tipos de motivação permitiu ao autor avaliar e traçar a dinâmica de mudanças no nível de motivação para o esporte. O nível de motivação foi determinado usando a metodologia do autor, desenvolvida com base na literatura científica. A base do estudo é a Filial da IUT na cidade de Surgut, departamento de Ciências Naturais e Humanidades, durante as aulas de educação física. O pesquisador mostrou que o uso de um método competitivo nas aulas de educação física pode aumentar a motivação, ativa o interesse dos alunos

On the estimate of the sigma^(I = 1)_(KN)(0)-term value from the energy level shift of kaonic hydrogen in the ground state

Using the experimental data on the energy level shift of kaonic hydrogen in the ground state (the DEAR Collaboration, Phys. Rev. Lett. 94, 212302 (2005)) and the theoretical value of the energy level shift, calculated within the phenomenological quantum field theoretic approach to the description of strong low-energy anti-K N and anti-K NN interactions developed at Stefan Meyer Institut fuer subatomare Physik in Vienna, we estimate the value of the sigma^(I = 1)_(KN)(0)-term of low-energy anti-K N scattering. We get sigma^(I = 1)_(KN)(0) = (433 +/- 85) MeV. This testifies the absence of strange quarks in the proton structure.Comment: 7 pages, no figure