Tula, Russia

Tula State University

Tula, Russia

Tula State University is the biggest state university in Tula, Central Russia. Since May 2006 its rector is Mikhail Vasilievich Gryazev, professor, doctor of technical science. More than 20,000 students, 400 post graduates, and 600 foreign students from 30 countries study at Tula State University. The university consists of nine faculties , a medical institute, a center of pre-university studies, a regional center for professional development, and 73 departments . Wikipedia.

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Markova G.,Tula State University | Klyueva E.,Tula State University
Materials Today: Proceedings | Year: 2017

The martensite anelasticity effects such as internal friction and the shape memory effect in 40Mn60Cu alloy were studied. The kinetics of spinodal decomposition in the 40Mn60Cu alloy after during aging (400, 440 and 540 °C) was studied by the mechanical spectroscopy methods. It is shown that the temperature of the martensitic transformation depends on temperature and time of aging within the metastable miscibility gap. The characteristics of the shape memory effect were determined at different pre-strains. It is shown that the extent of shape recovery K decreases exponentially with the increase of pre-strain (γr = 1⋯5 %). This is due to the increase of the proportion of irreversible slip deformation. © 2017 Elsevier Ltd.

Bogatyrev M.,Tula State University
Communications in Computer and Information Science | Year: 2017

The paper presents the application of Formal Concept Analysis paradigm to the fact extraction problem on natural language texts. Proposed technique combines the usage of two conceptual models: conceptual graphs and concept lattice. Conceptual graphs serve as semantic models of text sentences and the data source for concept lattice – the basic conceptual model in the Formal Concept Analysis. With the use of concept lattice it is possible to model relationships between words from different sentences from different texts. These relationships have been collected in formal concepts of concept lattice and provide interpreting formal concepts as possible facts. Facts can be extracted by using navigation in the lattice and interpretation its concepts and hierarchical links between them. Experimental investigation of the proposed technique is performed on the annotated textual corpus consisted of descriptions of biotopes of bacteria. © Springer International Publishing AG 2017.

Bograchev D.A.,RAS Frumkin Institute of Physical Chemistry and Electrochemistry | Volgin V.M.,Tula State University | Davydov A.D.,RAS Frumkin Institute of Physical Chemistry and Electrochemistry
Electrochimica Acta | Year: 2013

A simple model of electrochemical growth of nanowires in the pores of anodic aluminum oxide (AAO) template is developed. The metal deposition is considered at various overpotentials. The model takes into consideration the ionic transfer both in the varying diffusion layer in the pores and in the diffusion layer above the template, which is determined by the external hydrodynamic conditions. The model takes into account the kinetics of electrochemical reaction by means of the Tafel equation and the diffusion transfer of metal cations both in the pores and in the outer diffusion layer. The analytical solution of the problem with several simplifications yields the equations for calculating the time dependence of current, the pore filling time, and other parameters of the process. An example of the application of the model for the analysis of nanowire growth in the template pores is compared with the experimental data showing good agreement. © 2013 Elsevier Ltd.

Tarahovsky Y.S.,Russian Academy of Sciences | Kim Y.A.,Russian Academy of Sciences | Yagolnik E.A.,Tula State University | Muzafarov E.N.,Tula State University
Biochimica et Biophysica Acta - Biomembranes | Year: 2014

Flavonoids are polyphenolic compounds produced by plants and delivered to the human body through food. Although the epidemiological analyses of large human populations did not reveal a simple correlation between flavonoid consumption and health, laboratory investigations and clinical trials clearly demonstrate the effectiveness of flavonoids in the prevention of cardiovascular, carcinogenic, neurodegenerative and immune diseases, as well as other diseases. At present, the abilities of flavonoids in the regulation of cell metabolism, gene expression, and protection against oxidative stress are well-known, although certain biophysical aspects of their functioning are not yet clear. Most flavonoids are poorly soluble in water and, similar to lipophilic compounds, have a tendency to accumulate in biological membranes, particularly in lipid rafts, where they can interact with different receptors and signal transducers and influence their functioning through modulation of the lipid-phase behavior. In this study, we discuss the enhancement in the lipophilicity and antioxidative activity of flavonoids after their complexation with transient metal cations. We hypothesize that flavonoid-metal complexes are involved in the formation of molecular assemblies due to the facilitation of membrane adhesion and fusion, protein-protein and protein-membrane binding, and other processes responsible for the regulation of cell metabolism and protection against environmental hazards. © 2014 Elsevier B.V. All rights reserved.

Bogdanov M.B.,Tula State University
Gyroscopy and Navigation | Year: 2014

In the course of development of navigation systems for small-sized highly maneuverable vehicles their sensors should be subjected to mechanical tests, because the sensor certificates usually omit information on their mechanical resistance. The paper presents the main results from Russian IMU AIST-350T mechanical tests: shock tests, sinusoidal and broadband random vibration. © 2014, Pleiades Publishing, Ltd.

Pazukhina S.V.,Tula State University
Human Ecology | Year: 2016

The article considers results of empirical research which purpose was to study the future teachers’ ecological consciousness in the ascertaining stage of experiment. Analysis of the results was carried out on a number of criteria: motivational, cognitive, and emotional. The orientation of the future teachers on the educational and disciplinary or personal model of interaction with schoolchildren is regarded as the main indicator of ecological consciousness on motivational criterion. An indicator of cognitive criterion is knowledge about student’s personality as a biopsychosocial subject and laws of its development. Emotional criterion is studied by identifying the level of empathy and prevailing empathy channels. Standardized psychological techniques meeting the requirements for necessary quality indicators of tests are used for the diagnosis of each of the criteria: for motivational one - test-questionnaire by V. G. Maralova "Diagnosis of teachers’ orientation on disciplinary training or personal model of interaction with children" for cognitive one-test-questionnaire "Studying of I-Concept as justification of the influence on another person" (by A. G. Abramova); for emotional one - technique for diagnosing the level of empathic abilities of V. V. Boyko. Manifestations of ecological consciousness in action (behaviour) of the future teachers are traced by monitoring the system used by students during internship of professional activities and skills that reflect the particular model of the interaction with the students. Two learning groups of junior undergraduates make up the study sample. The obtained results allow to state that 1/3 of surveyed have a low level of environmental compatibility of pedagogical consciousness, half of the respondents - an average one and the remaining part - above average level. The lack of significant differences in the studied parameters between the experimental and control groups was revealed using the Student’s t-test and Wilcoxon - Mann - Whitney U-test. Based on the results obtained in the course of ascertaining stage, the conclusion about the necessity of a special work performance to improve the level of future teachers’ ecological consciousness development was made. © 2016, Springer New York LLC. All rights reserved.

Degtyarev N.,Tula State University | Seredin O.,Tula State University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2010

Face detection (FD) is widely used in interactive user interfaces, in advertising industry, entertainment services, video coding, is necessary first stage for all face recognition systems, etc. However, the last practical and independent comparisons of FD algorithms were made by Hjelmas et al. and by Yang et al. in 2001. The aim of this work is to propose parameters of FD algorithms quality evaluation and methodology of their objective comparison, and to show the current state of the art in face detection. The main idea is routine test of the FD algorithm in the labeled image datasets. Faces are represented by coordinates of the centers of the eyes in these datasets. For algorithms, representing detected faces by rectangles, the statistical model of eyes' coordinates estimation was proposed. In this work the seven face detection algorithms were tested; article contains the results of their comparison. © Springer-Verlag Berlin Heidelberg 2010.

Malenko P.I.,Tula State University
Russian Engineering Research | Year: 2011

The temperature is determined at individual contacts of a surface with submicroscopic roughness in slipping conditions with boundary lubrication. The initiation of cooperative or resonant diffusion is possible, depending on the frequency of the temperature variation. © 2011 Allerton Press, Inc.

Raspopov V.Ya.,Tula State University
23rd Saint Petersburg International Conference on Integrated Navigation Systems, ICINS 2016 - Proceedings | Year: 2016

The article studies the main features of the mechanics of controllable two-degree-of-freedom gyroscope with a spherical ball bearing suspension (SBBS) and a pivoting mirror.

Kozlov D.V.,Tula State University
2011 International Siberian Conference on Control and Communications, SIBCON 2011 - Proceedings | Year: 2011

An analytical method for solving nonlinear differential equation that describes the Bouc-Wen model of dynamic hysteresis is proposed. Solution is sought in the form of successive approximations based on the Fourier transforms. The results confirm the efficiency of this method. © 2011 IEEE.

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