Estimation of the total inelasticity coefficient in interaction of greater than or equal to 20 TeV hadrons with lead

Experimental data on the interaction mean free path of hadrons with energy E 20 TeV in lead obtained with multilayer X-ray emulsion chambers(XEC) are compared with results of simulation of nuclear-electromagnetic cascades in lead chamber. It is shown that, to explain experimental data, the value of the inelasticity coefficients, K .8 should be assumed

Reconstruction of boundary controls in parabolic systems

In the paper, an inverse dynamic problem is considered. It consists in reconstructing a priori unknown boundary controls in dynamical systems described by boundary value problems for partial differential equations of parabolic type. The source information for solving the inverse problem is the results of approximate measurements of the states of the observed system's motion. The problem is solved in the static case; i. e., to solve it, we use all the measurement data accumulated during some specified observation interval. The problem under consideration is ill-posed. To solve it, we propose the Tikhonov method with a stabilizer containing the sum of the mean-square norm and total time variation of the control. The use of such nondifferentiable stabilizer allows us to obtain more precise results than the approximation of the desired control in the Lebesgue spaces. In particular, this method provides the pointwise and piecewise uniform convergences of regularized approximations and makes possible the numerical reconstruction of the subtle structure of the desired control. In the paper, the subgradient projection method for obtaining a minimizing sequence for the Tikhonov functional is described and substantiated. Also, we demonstrate the two-stage finitedimensional approximation of the problem and present the results of numerical simulation. © 2013 Pleiades Publishing, Ltd

Формирование готовности и мотивации студентов к самостоятельной работе в высшем техническом учебном заведении

The article is devoted to the problem of organizing independent work of students in a higher technical educational institution, held in Tyumen Industrial University of the Nizhnevartovsk branch. This paper analyzes the requirements for students to master the skills of independent work on the basis of the competency model of a university graduate in accordance with the requirements of the professional standard of higher education. The competence of a successful specialist in any dynamically developing industry is considered. The author made an analysis of the works of scientists, teachers, researchers, dealing with the problem of motivation and improving the efficiency of the organization of work activities of students. The tendency to steady interest of students in additional material related to the profile of the main direction of study in the form of problem situations is revealed. Three forms of organization of independent work are highlighted and described in detail: extracurricular, classroom, and creative in the form of NIRS (students' research work). Express questionnaires of students were conducted to measure the time spent on independent work, to identify students' claims for research skills, for the types of independent work that are most laborious for respondents, diagnosing time spent on extracurricular work per week. According to the results of the study, graphs were made and diagnostic diagrams were constructed. The conclusion is formulated.El artículo está dedicado al problema de organizar el trabajo independiente de los estudiantes en una institución de educación técnica superior, celebrada en la Universidad Industrial de Tyumen de la sucursal de Nizhnevartovsk. Este documento analiza los requisitos para que los estudiantes dominen las habilidades del trabajo independiente sobre la base del modelo de competencia de un graduado universitario de acuerdo con los requisitos del estándar profesional de educación superior. Se considera la competencia de un especialista exitoso en cualquier industria en desarrollo dinámico. El autor realizó un análisis de los trabajos de científicos, docentes, investigadores, abordando el problema de la motivación y mejorando la eficiencia de la organización de las actividades laborales de los estudiantes. Se revela la tendencia a mantener el interés de los estudiantes en material adicional relacionado con el perfil de la dirección principal de estudio en forma de situaciones problemáticas. Se resaltan y describen en detalle tres formas de organización del trabajo independiente: extracurricular, aula y creativa en forma de NIRS (trabajo de investigación de los estudiantes). Se realizaron cuestionarios expresos a los estudiantes para medir el tiempo empleado en el trabajo independiente, para identificar los reclamos de los estudiantes sobre habilidades de investigación, para los tipos de trabajo independiente que son más laboriosos para los encuestados, diagnosticando el tiempo dedicado al trabajo extracurricular por semana. De acuerdo con los resultados del estudio, se realizaron gráficos y se construyeron diagramas de diagnóstico. La conclusión está formulada.Статья посвящена проблеме организации самостоятельной работы студентов в высшем техническом учебном заведении, проводимой в Тюменском индустриальном университете Нижневартовского филиала. В статье анализируются требования к студентам освоить навыки самостоятельной работы на основе модели компетенций выпускника вуза в соответствии с требованиями профессионального стандарта высшего профессионального образования. Рассматривается компетенция успешного специалиста в любой динамично развивающейся отрасли. Автором проведен анализ работ ученых, преподавателей, исследователей, занимающихся проблемой мотивации и повышения эффективности организации работы, виды деятельности студентов. Выявлена тенденция к устойчивому интересу студентов к дополнительному материалу, связанному с профилем основного направления обучения в виде проблемных ситуаций. Выделены и подробно описаны три формы организации самостоятельной работы: внеклассная, аудиторная и творческая в форме НИРС (научно-исследовательская работа студентов). Экспресс-анкетирование студентов проводилось с целью измерения времени, затраченного на самостоятельную работу, выявления притязаний студентов на исследовательские навыки, на виды самостоятельной работы, наиболее трудоемкие для респондентов, диагностики времени, затраченного на внеурочную работу в неделю. По результатам исследования построены графики и диагностические диаграммы. Сформулирован вывод

Degradation and Restoration of Superconducting Parameters of HTS Tapes under Mechanical Loads and Heat Treatment

As it is known, the current-carrying properties of HTS tapes are structurally sensitive parameters, and largely depend on the grain size, morphology, texture, presence of pinning centers and others. These structural parameters may be changed by shock loading actions. The report presents the results of research of varying intensity shock loads effects from 0.35 to 100 J/cm2 on the structure and characteristics of superconducting Bi-2223 tapes. A strong degradation of the critical current

Properties and Structural Transformations of Mgb2-tapes under the Action of Plasma Shock Waves

The current-carrying properties (

“Digital Generation”: Threats and Hopes in the Era of Information-Digital Civilization

The article refers to the information and digital civilization — its threats and hopes formed by it to the “digital generation”. On the one hand, an identifier is the name of a managed object in a digital society. Each step of the “digitized citizen” can be checked, serve as a test of loyalty to the system, to agree with the worldview and ideological attitudes adopted in it. Civilization atrophies and deforms auditory and visual physiological analyzers, changes mental features of the younger generation. On the other hand, young people, like the Pythagoreans who offered us the digital Universe, perceive the digitalization of social life organically as integration into the natural environment of life. Information and digital civilization gives birth to the world society as an alternative site of politics, differs from the main international society, creates its own logic of communication, mobilization and action. If international diplomacy creates a formal, hierarchical, formal and exclusive atmosphere concerning the events of intergroup relations, transnational digital network (TDCN) are informal, egalitarian, highly inclusive and open to multilingual presentation and alternative forms of political expression. Information and digital civilization creates limitless conditions for the development of human ability to foresee and foresee the future, and not a prophet, not a magician, not a psychic, and the most common, the average person. After all, our mind develops faster than the body, which creates the preconditions for the fact that humanity, which has become a digital community, will be able to abandon the harmful “benefits” of civilization without becoming a victim

Synanthropic flora of Kuzbass

The article presents the materials of studies of the adventive flora of the Kemerovo region. For the territory of the Kemerovo region, we identified 244 alien species belonging to 162 genera and 50 families. As a result of the increasing process of invasion of new species into the territory of the region, the need for constant monitoring of alien species for the degree of their naturalization, especially in natural cenoses, is urgent. The problem of synanthropic plant species is becoming increasingly important not only for economically developed territories, but also for the relatively preserved mountain regions of Kuzbass. As a result of the studies, it was found that the synanthropic fraction of the Kuzbass flora, consisting of adventive and apophyte species, accounts for about 18% of the total composition of the flora of vascular plants in the Kemerovo region (60 apophyte species, 244 – advent ones). The revealed heterogeneity in the chorological, ecological and biological terms of the species of the adventive fraction makes it possible to find suitable conditions in various types of ecotopes on the territory of the Kemerovo region. This type of work can serve as a basis for developing a strategy for the preservation of natural phytosystems of Kuzbas

Effect of triazavirine on the outcome of a lethal influenza infection and secondary bacterial pneumonia following influenza in mice

Pneumonia often occurs as secondary infection post influenza disease and accounts for a large proportion of the morbidity and mortality associated with seasonal and pandemic influenza outbreaks. The antiviral drug triazavirine is licensed in Russia for the treatment and prophylaxis of acute respiratory infections, including influenza A and B viruses. In the present study, we investigated the efficacy of triazavirine in a mouse model of secondary Staphylococcus aureus pneumonia following A/California/04/2009 (H1N1)pdm09 influenza virus infection. We also performed a study of the efficacy of triazavirine against the A/California/04/2009 (H1N1)pdm09 lethal influenza infection in mice. In this model, triazavirine at the dose of 25 mg/kg/day significantly enhanced the survival of animals (60% compared to 20%) and the mean survival time to death, prevented weight loss, and reduced viral titer in the lungs of mice infected with influenza virus. At doses of 50 and 100 mg/kg/day, triazavirine was highly effective in the treatment of the secondary bacterial pneumonia following influenza infection in mice. At these doses, triazavirine protected 67-75% of animals against death, increased the mean survival time to death by twofold, and reduced the virus titer by 2.2-3.0 log10TCID50/ml compared to the mice in the control group. These findings suggest the possible benefit of triazavirine treatment in reducing post influenza pneumonia incidence in humans.Pneumonia often occurs as secondary infection post influenza disease and accounts for a large proportion of the morbidity and mortality associated with seasonal and pandemic influenza outbreaks. The antiviral drug triazavirine is licensed in Russia for the treatment and prophylaxis of acute respiratory infections, including influenza A and B viruses. In the present study, we investigated the efficacy of triazavirine in a mouse model of secondary Staphylococcus aureus pneumonia following A/California/04/2009 (H1N1)pdm09 influenza virus infection. We also performed a study of the efficacy of triazavirine against the A/California/04/2009 (H1N1)pdm09 lethal influenza infection in mice. In this model, triazavirine at the dose of 25 mg/kg/day significantly enhanced the survival of animals (60% compared to 20%) and the mean survival time to death, prevented weight loss, and reduced viral titer in the lungs of mice infected with influenza virus. At doses of 50 and 100 mg/kg/day, triazavirine was highly effective in the treatment of the secondary bacterial pneumonia following influenza infection in mice. At these doses, triazavirine protected 67-75% of animals against death, increased the mean survival time to death by twofold, and reduced the virus titer by 2.2-3.0 log10TCID50/ml compared to the mice in the control group. These findings suggest the possible benefit of triazavirine treatment in reducing post influenza pneumonia incidence in humans

PROBLEM OF THE INTERNATIONAL CHRONOSTRATIGRAPHIC CHART OF LOWER DEVONIAN AND STRATIGRAPHIC BOUNDARIES OF LOWER DEVONIAN STAGES IN SOUTHERN TIAN SHAN

The boundaries of the International Chronostratigraphic Chart (ICC) are associated with the natural historical stages of the Earth's development, and their boundaries are usually determined by the palaeogeographical or palaeobiological event that is recognized in most regions of the world. Studies on the standardization of the Lower Devonian ICC stages duration have lasted more than 70 years. The first stages were Gedinnian, Siegenian and Emsian, but their duration was not accurately determined. The article shows the history of the establishment of the currently used Lochkovian, Pragian and Emsian stages. The key study method of the Lower Devonian stages deposits is biostratigraphic one, based on the use of archistratigraphic pelagic fossils, i.e. revealing of the zonal sequence over the conodonts, dacrioconarids and goniatites fossils and comparing them with the standard sequence adopted by the International Geological Congress (IGC). The article contains an analysis of the discussed problems related to the determination of the position of the global boundary stratotype section and point (GSSP) of the Lower Devonian stages. The use of the magnetostratigraphic method in comparison of the sections of the Emsian stage in Barrandian and Zarafshan range is also discussed. The Lower Devonian regional strata of the Zarafshan-Gissar and Turkestan-Altay mountain regions of the Southern Tian Shan are characterized. It is shown that the zonal sequences on conodonts and dacrioconarids presented in these regions almost completely coincide with the standard Lower Devonian sequences in the International Chronostratigraphic Chart. The characteristics of zones and volume of Bursykhirmanian, Sangitovarian, Khukarian, Kunjak, and Kitab horizons are given