On the Gauss map of embedded minimal tubes

A surface is called a tube if its level-sets with respect to some coordinate function (the axis of the surface) are compact. Any tube of zero mean curvature has an invariant, the so-called flow vector. We study how the geometry of the Gaussian image of a higher-dimensional minimal tube M is controlled by the angle alpha(M) between the axis and the flow vector of M. We prove that the diameter of the Gauss image of M is at least 2alpha(M). As a consequence we derive an estimate on the length of a two-dimensional minimal tube M in terms of alpha(\M) and the total Gaussian curvature of M

Servo systems with incomplete information

The problem of control design formation i

THE RESULTS OF THE FORCED TRANSITION TO DISTANCE LEARNING THROUGH THE EYES OF STUDENTS

Universities operating in the new digital reality will only be able to remain competitive if they develop new educational technologies adapted to the new demands of applicants. The formation of the university's own educational environment should be based on the opinions of the students

Carácter económico de la competencia: enfoques metodológicos generales del problema

In the period of structural and qualitative changes in the Russian economy, the development of the labor market and the educational services market, the effectiveness of economic education is largely determined by the level of formation of economic competencies of students. The development of the diversification process required bringing the education system in line with the requirements of market relations, the principles of alternatives and variability, ensuring the quality of education, which is the most important condition for the specialist’s demand in the labor market. The target component of the model of formation of students’ economic competences by definition includes the goals and objectives of economic training. The increased demand for economic knowledge has led to new forms of economic education. The activity component in the model of formation of economic competencies focuses on the fact that in the domestic system of education in relation to the vocational school there was a long-term practice of compiling the qualification characteristics of a specialist, which fixed the requirements for knowledge, skills and abilities of graduates of various specialties, where in addition to the knowledge paradigm there were the terms “readiness”, “ability”, “responsibility”, “understanding” and “worldview”, expanding the close framework of such a paradigm. The main idea of the activity approach in education is not connected with the activity itself, but with the activity as a means of formation and development of the student’s personality. The content component of the model involves the formation of students’ economic competencies in the form of key, professional and additional economic competencies at different levels of professional education, taking into account training in economic and non-economic specialties.En el período de cambios estructurales y cualitativos en la economía rusa, el desarrollo del mercado laboral y el mercado de servicios educativos, la efectividad de la educación económica está determinada en gran medida por el nivel de formación de competencias económicas de los estudiantes. El desarrollo del proceso de diversificación requirió alinear el sistema educativo con los requisitos de las relaciones de mercado, los principios de alternativas y variabilidad, asegurando la calidad de la educación, que es la condición más importante para la demanda del especialista en el mercado laboral. El componente objetivo del modelo de formación de las competencias económicas de los estudiantes, por definición, incluye las metas y objetivos de la formación económica. La mayor demanda de conocimiento económico ha llevado a nuevas formas de educación económica. El componente de actividad en el modelo de formación de competencias económicas se centra en el hecho de que en el sistema educativo interno en relación con la escuela vocacional había una práctica a largo plazo de recopilar las características de calificación de un especialista, que fijaba los requisitos de conocimiento, habilidades y destrezas de graduados de diversas especialidades, donde además del paradigma del conocimiento existían los términos “preparación”, “habilidad”, “responsabilidad”, “comprensión” y “visión del mundo”, ampliando el marco cercano de tal paradigma. La idea principal del enfoque de la actividad en la educación no está relacionada con la actividad en sí, sino con la actividad como un medio de formación y desarrollo de la personalidad del alumno. El componente de contenido del modelo implica la formación de competencias económicas de los estudiantes en forma de competencias económicas clave, profesionales y adicionales en diferentes niveles de educación profesional, teniendo en cuenta la capacitación en especialidades económicas y no económicas

Assessment of epidemiological and epizootiological situation on tularemia in the Republic of tatarstan

Objective of the study was to assess epidemiological and epizootiological activity of natural tularemia foci in the Republic of Tatarstan for further forecasting of the developments and working out the tactics for implementation of preventive and anti-epidemic measures. Materials and methods. We utilized statistical data, reports of the Center of Hygiene and Epidemiology in the Republic of Tatarstan, and literature sources for the analysis. Results and conclusions. Since 1995, the incidence among the population in Tatarstan has not been registered. Natural tularemia foci are situated in 19 enzootic as regards the infection administrative districts in the territory of the Republic. Epizootiological monitoring of the natural foci suggests that over the last four years their activation occurred. In this contest realization of complex anti-epidemic  measures,  regulated  by  the  current  normative-methodological  documents  remains  relevant,  as  well  as timely and effective diagnostics, including among the patients with a similar to tularemia symptoms

Clinical-Laboratory Effectiveness of Immune-Replacement Therapy of Hemorrhagic Fever with Renal Syndrome

Currently, hemorrhagic fever with renal syndrome (HFRS) remains the most common natural focal disease of viral etiology in the Russian Federation. Effective antiviral drugs have not yet been developed. Pathogenetic and symptomatic drugs are mainly used in the treatment of HFRS.The aim of the study was to evaluate the clinical and laboratory effectiveness of intravenous gabriglobin in the treatment of moderate forms of HFRS.Materials and methods. The study included 22 patients with a diagnosis “HFRS of moderate severity” in the febrile stage of the disease. In the febrile period of HFRS, patients of the main group (n=10) were given gabriglobin via intravenous route at a dose of 0.1 g/kg per day along with pathogenetic therapy. The course of treatment was 2–3 infusions. The control group (n=12) received only pathogenetic therapy.Results and conclusions. As a result of the studies, the clinical and laboratory efficacy of intravenous administration of gabriglobin in the treatment of patients with moderate-grade HFRS was revealed, which was manifested by a decrease in the duration of the febrile period by 2.1 days, the severity of oliguria and a decrease in the duration of thrombocytopenia by 3.5 days compared with the group of patients receiving only pathogenetic therapy

Experience in Studying Herd and Individual Immunity to the SARS-CoV-2 Virus in Medical Workers

The aim was to study SARS-CoV-2 immunity among medical workers in Kazan.Materials and methods. Studied were serum samples from 348 medical workers from 10 medical organizations in Kazan, divided into groups according to the level of the alleged risk of infection of employees. To determine IgG, a two-stage direct version of the solid-phase ELISA and the test-system “SARS-CoV-2-IgG-ELISA-BEST” (Russia) were used.Results and discussion. At the time of the study and over the previous three months, the examined medical workers had no symptoms of acute respiratory viral infection or respiratory tract infections; there were negative results of examining nasopharyngeal/ oropharyngeal swabs for the presence of SARS-CoV-2 RNA. Seroprevalence for IgG to SARS-CoV-2 virus for different medical organizations in Kazan ranged within the scope of 3.3–30.8 % and averaged 16.4 %. The wide variation in seroprevalence values in medical workers of different medical organizations may indicate different levels of intensity of professional contacts and the effectiveness of anti-epidemic measures in these medical organizations. Among medical workers with seropositive results, the prevalence of persons with a very high coefficient of positivity (49.1 %) is observed, which characterizes high level of antiviral antibodies. The presence of a high proportion of seropositive individuals among medical workers, who have had an asymptomatic form of COVID-19 confirms the high intensity of the latent epidemic process, which must be taken into account when organizing preventive measures, including vaccination