Poster: The role of mathematical disciplines in engineering practice

The article describes mathematical education as an essential part of modern engineers' fundamental training system. The research determines the role of mathematics for engineering practice by analyzing responds of survey experts: engineers with PhD and doctoral degrees in the fields of natural sciences and technology and representatives of acting industrial enterprises of Russia. The purpose of this study is to analyze the role of mathematics in engineering practice. Additionally, the task of the paper is to analyze the relationship between students 'experience with school mathematics and their choice of an engineering career. The research uses the Likert scale as the ground basis. As a result of the study, a link was established between the level of proficiency in mathematics at school and the subsequent choice of an engineering specialty by respondents. Over 80% of responding engineers were successful in mathematics at school. High school students, who are successful in mathematics, continue their success as university students. The quality of mathematical education both in high school and at university has a great influence on future engineers. The study showed that professional engineers constantly use mathematical knowledge in their work

Additive singular spectral model of a dendrochronological signal

Relevance. Allocation of structural components in a dendrochronological signal of annual rings of coniferous trees expands the possibilities of the bioindication method and allows obtaining information about changes in environmental conditions in the past for extended territories. Aim. Creation of an additive singular spectral model based on the frequency trigonometric components of the dendrochronological signal; reconstruction of changes in the total ozone content in the atmosphere in the past, affecting the level of ultraviolet radiation in the B range radiation. Objects. Time series of total ozone content in the atmosphere (data from 1932), width and density of annual rings (data from 1686–2004) on the example of the territory near the observatory in Arosa, Switzerland, time series of stable oxygen isotopes δ18Oc, France. Methods. Time series analysis (decomposition of a time series, identification of model parameters, prediction of a time series), statistical analysis (F-criterion, χ2 – Pearson criterion), experimental measurements of the percentage components of the wood of annual rings, correlation analysis, spectral singular analysis. Results. Decomposition of the dendrochronological signal of individual chronologies into trigonometric components in the Caterpillar program. Correlation analysis of the sensitivity of trees to atmospheric effects. Reconstruction of the ozone level in the stratosphere using the first trigonometric component of the dendrochronological signal. In cellulose, the first low-frequency component of the signal and the structural component of wood, a reliable response of trees to long-period fluctuations in the total ozone content is recorded. This allows assessment of the impact of the stress factor on conditions of exploitation of forest resources. The use of data on the width of the annual rings allows you to expand the territorial boundaries of the method

The Role of the Energy Sector in the Iranian Economy

This paper is devoted to analyzing the processes that took place in the energy sector of Iran for the period from 2004 to 2021. It is emphasized that for the sustainable development of the country's economy, a reliable, long-term, and economically acceptable supply of various types of energy in their optimal combination is necessary. Despite the territory of Iran having an extremely high potential for the development of non-traditional energy, the analysis shows that the development of the Iranian economy is mainly based on oil revenues. In the context of the growing crisis in the global economy, an increase in demand for oil and oil products, oil accents in energy diplomacy began to intensify, which allows us to speak about the actualization of the problems of developing the oil and gas sector of Iran and shifting the focus towards traditional energy sources. Nevertheless, to achieve sustainable development, along with the possession of a resource base, the availability of modern equipment and technologies, and dominance in the market for products that foreign partners are interested in acquiring are necessary. It is concluded that Iran is vulnerable to geo-economic risks in the current conditions of the development of the world economy

Poster: project-based learning in the mathematics course for first year students at a technical university

Project activity is a form of educational and cognitive activity of students, which consists in motivational achievement of a consciously set goal. Project-based learning is increasingly being used in the various academic disciplines around the world. However, the question of when to start using this method effectively remains open. Therefore, the purpose of this article is to study the possibility of using project-based learning in the study of mathematics in the first semester in the first year at a technical University. To study the effectiveness of this method, we conducted a statistical test of the hypothesis of equality of average scores in the intermediate testing, scored by students who studied using the project method and the traditional one. The result of a survey of students about their knowledge of the project method before using it in a mathematics course at the University is presented. It is established that the use of the project-based learning can increase the interest of students in the learning process. The project-based learning has increased the average score of students at the end of the semester by 16.19% compared to the control group

Применение аминокислотных смесей при пищевой аллергии

The article presents modern approaches to the use of balanced formulas for nutrition and diet correction in children with various forms of food allergies. The guidelines are based on all available up to date evidence on the efficacy, safety and utility of using such innovative medical technology as specialized amino acid formulas. This formula is the targeted medical intervention for food allergies and confirmed cow's milk protein allergy, and particularly for patients with reduced physical growth and development (growth rates included). The material is based on methodological guidelines on the amino acid formulas usage previously developed by specialist experts of the Union of pediatricians of Russia in 2020.В статье приводятся современные подходы к использованию сбалансированных детских смесей, которые предназначены для вскармливания и коррекции рациона детей, страдающих различными формами пищевой аллергии. Рекомендации разработаны на основании всех доступных на сегодняшний день доказательств эффективности, безопасности и полезности использования такой инновационной медицинской технологии, как специализированные аминокислотные смеси. Данная формула является таргетным медицинским вмешательством при пищевой аллергии и подтвержденной аллергии к белкам коровьего молока, особенно для пациентов со сниженными показателями физического развития, в том числе темпов роста. Материал основан на методическом руководстве по применению аминокислотных смесей, ранее разработанном экспертами-специалистами Союза педиатров России в 2020 г