bluuebunny/crossref_metadata_2025 huggingface dataset:
Nonlinear Eigen frequencies of a functionally graded porous nano-beam with respect to the coulomb and Casimir forces
Authors: Papkova I.V. , Yakovleva T.V.
Published: May 2023

A new mathematical model of a porous functionally graded micro/nano-beam under the action of the Casimir force and the Coulomb force is constructed in this paper. The construction of the mathematical model takes into account the Euler-Bernoulli kinematic model. The dimensional-dependent parameter is taken into account by modified moment theory of elasticity. The variational, differential equations, boundary and initial conditions are derived from Ostrogradsky-Hamiltonian variational principle. The problem of non-linear natural oscillations of a beam under the action of force Casimir and Coulomb force is solved. The influence of the Casimir and Coulomb forces on the nonlinear eigenfrequencies of the micro/nano-beam is shown.
Research of terminal soldering technology for auto glass heating systems
Authors: Abdurakhmonov Sultonali , Sayitov Shavkatjon , Mirzajonov Makhmud , Bilolov Inomjon , Khaydarov Abbos
Published: May 2023

The paper considers the issues of technology for soldering a terminal (contactor) to auto-glass heating systems for cars, i.e. technology of soldering metal to non-metal bodies. A technique for conducting an experiment measuring temperature on a setup specially designed for this system is described. The results of experimental studies using various solder compositions are presented. The optimal variants of terminal soldering technologies for auto glass heating systems are determined and presented. Purpose: Experimental study of the soldering process of the terminal to the auto-glass heating system in a specially designed soldering installation. The soldering plant is designed and built using modern computer automation tools. Methods: In the experiments, automatic control systems were used to control the load supply to the soldering irons and the pressure on them. Registration (removal of information) was carried out on the SAMKOON touch panel. Results: Experimental data were obtained that provide temperatures for the optimal soldering mode of the terminal to heating systems. Conclusion: It has been experimentally proven that to obtain the required soldering of the terminal to the auto glass base, it is necessary to create a multilayer base and use hard solder that wets the soldered layer. The temperature holding interval of the soldering iron is in the range of 161 ÷ 242 ℃. The composition and weight of the solders used in soldering were also investigated.
Evaluation of the effect of interphase zone on the properties of the Al-Al2O3 composites
Authors: Alexandrova Yu.P. , Suvorova E.V.
Published: May 2023

A theoretical study of the mechanical characteristics of the composite system Al-Al2O3. A justification for the reduced strength values of composite samples associated with the possible occurrence of increased residual stresses has been proposed. The influence of interfacial zone (for which the composition and approximate thickness have been determined) on the mechanical properties of the material has been studied; it is shown that within the framework of the classical model of multilayered cylindrical fibres the interfacial zones do not significantly influence the material properties, but can affect the level of residual stresses.
Simulation and analysis of transition processes in linear electrical circuits using MatLab software package
Authors: Semenova Mariya , Kazazaeva Dar’ya , Sabychikova Alika
Published: May 2023

The research work considers the simulation and analysis of transition processes in linear electrical circuits using the MatLab software package. The transition processes occurring in the following linear electrical circuits were analyzed: RL equivalent circuit in case of connecting the relay control winding to a DC voltage source; RC equivalent circuit in case of connecting a capacitor through a limiting resistor to a DC voltage source and disconnecting it from the source; RLC equivalent circuit in case of capacitor discharge to an inductor; this capacitor shall be pre-charged from a DC voltage source; a branched electrical circuit of the first order where its topology changes after switching. As a result of the research, the transition process graphs were obtained for which the simulated completion time of the transient process does not differ from the calculated values with an error of less than 2%. The analysis of transition processes revealed the following: the winding inductance effect on the time of relay switching; the effect of the additional resistance value on the charge (discharge) of the capacitor; the effect of the resistance value change when the capacitor is discharged in a circuit with two reactive elements; the effect of changes in the topology of the electrical circuit on the intensity of the transient process after switching.
Temperature distribution in an elliptical body without internal heat sources under boundary conditions of the third kind with partial adiabatic isolation
Authors: Kanareykin Alexandr
Published: May 2023

The article deals with the distribution of the temperature field in an elliptical body without internal heat sources. In this case, the boundary conditions are boundary conditions of the third kind. The solution is found when moving to an elliptic coordinate system. The author has obtained an analytical solution for the distribution of the temperature field in a body with an elliptical cross section of infinite length at a given ambient temperature with partial adiabatic isolation in the form of a functional series using hypergeometric functions.
Drop impacting on the liquid surface with a liquid film
Authors: Saushin Ilya
Published: May 2023

The paper presents the obtained data about the conditions for the splashes when a drop impacts the surface of a liquid with a liquid film. Based on the results of numerical simulation, it is shown that the presence of a liquid film allow significantly expand the area of drop impact without the splashes. The results can be used to implement an active method to reduce drop entrainment, for example, in gas-liquid separators.
Improving the efficiency of applying the method of slab and floor lifting
Authors: Zholtikov Artyom , Zinovkin Artyom , Khubaev Alan
Published: May 2023

Currently, in relation to the problem of erecting buildings and structures using the method of lifting of slabs and floors, there is a need to evaluate the effectiveness of the organizational and technical solutions in the process of construction and assembly works. This publication reviews the process of construction and installation works by lifting the slabs and floors with an analysis of all the advantages of this method over others. It also reviews the factors that affect the effective use of this method. Basing on the analysis of the method of slab and floor lifting, this paper will justify the necessity of creating tools to enable choosing the most effective organizational and technical solutions when using this method, and optimizing the processes of using this method for works performance. We suggested to use “complex index for efficiency of applying the method of lifting slabs and floors”, represented by a discrete index, which allows to determine the efficiency of organizational and technical solutions in applying the method of lifting slabs and floors. A whole range of factors affecting the formation of a “ complex index of efficiency application of the method of lifting slabs and floors” have been studied and proposed. In addition, for mathematical representation of the “complex index of efficiency of application of the method of lifting slabs and floors”, we used the method of modeling of multifactor systems, which is presented in this dissertation. The performed studies are preconditions for the formation of a model that will allow us to determine the effectiveness of the organizational and technical solutions in the application of the method of lifting slabs and floors, as well as give appropriate recommendations that will increase the efficiency of production for construction and installation works.
Deformation-thermal method for atomic ordering and mechanical improvement of Cu3Pd alloys
Authors: Okulov A. V. , Gokhfeld N. V. , Iusupova O. S. , Pushin V. G. , Pilyugin V. P.
Published: May 2023

The paper presents studies of the mechano-structural characteristics of the atomically ordered Cu3Pd alloy subjected to severe plastic deformations (SPDs) at room and cryogenic temperatures combined with subsequent annealings. Transmission and scanning electron microscopy (TEM and SEM), X-Ray diffraction (XRD) analysis and microhardness tests were used as research methods. The mechanical characteristics of the synthesized Cu3Pd alloy were compared after preliminary SPDs at room and cryogenic temperatures as well as during subsequent annealings. The significant acceleration of the atomic ordering kinetics and, consequently, effective diffusion during recrystallization annealing after cryodeformation was found. The developed deformation-thermal method can be used to synthesize high-strength nanostructured resistive and electrocontact materials.
Investigation of various pipe materials for riser operation in the arctic seas
Authors: Yangirov Farit , Ibragimov Dinislam , Ismakov Rustam , Dichtyar Tatiana
Published: May 2023

А riser, which is an offshore water separation column is the main difference between offshore drilling and onshore drilling. The idea of the research is to calculate the stressed-deformed state of a riser made of various materials to identify technological advantages during drilling on the shelf and at sea in the Arctic. The article is the result of research conducted in the Mathematica application program to determine the operating stresses that depend on the drilling process conditions and the external environment. Modern drilling technologies are designed to increase the capacity of the equipment or to use alternative materials. Given the pace of development of the fields of the Northern Shelf of Russia, there is a need to explore the use of alternative materials for such marine equipment as risers.
Application features of microarc oxidation technology
Authors: Novikova Olga , Bolotov Aleksander , Novikov Vladislav
Published: May 2023

The technology of microarc oxidation of valve metals is one of the promising methods for engineering the working surface of friction units of modern technology. As a result of the versatility of the technology, it is possible to obtain composite ceramic coatings and materials of various types. Their properties are set by the electrical modes of material formation, the chemical composition of the electrolyte, and the possible further modification of the ceramic matrix with micro- and nanosized tribofillers. Based on the practical results of their research in the field of creating coatings of various types by microarc oxidation, an analysis is given of the main areas of application of microplasma electrolytic oxidation technology, their advantages over other methods of surface modification, structure and properties of the materials obtained. It is possible to distinguish the modification of the friction surface of a part by the method of microplasma electrolytic oxidation in order to increase its hardness and wear resistance. Good results were obtained in increasing the wear resistance of the hardened working surface of the spinning machine parts, the number of equipment repairs was reduced by more than 20 times. The use of microarc oxidation is promising for the preparation of composite coatings, which are a ceramic matrix in which solid lubricating dispersed particles are embedded. The technology of forming a matrix on aluminum, modified with dispersed magnetite, graphite and molybdenum disulfide, has been developed. According to the results of comparative tribotechnical tests, it was found that the intensity of linear wear of the material filled with MoS2 is 3 times, and Fe3O4 - 1.6 times lower than that of the coatings without filler. Based on the technology of microplasma electrolytic oxidation, an original technology has been developed for obtaining mineral-ceramic material, which is a matrix of aluminum oxide and dispersed diamond inclusions. Abrasive wheels made from this material have a consistently high volumetric cutting ability, 1.5-3.5 times higher than the traditional analogues and are characterized by high diamond retention. The possibilities of microplasma oxidation have not yet been fully explored, the most promising direction being the creation of nanostructured coatings for a specific technological task.
About the need to develop an intelligent information system to evaluate investment project environmental effectiveness
Authors: Bakumenko Maria , Sigal Anatoliy , Titarenko Dmitriy
Published: May 2023

The evaluation of the efficiency of an investment project implemented in the real economy is impossible without assessing its environmental implications. The justification of investment projects may apply modern specialized software. Such software products do not provide an opportunity to fully automate the preparation of the environmental section of the business plan. The authors believe that it is wise to introduce automation into the development of the environmental section of the investment project business plan through an appropriate intelligent information system (expert system). Processing input data requested by the system with various prompts and explanations, the expert system should form the environmental section of the business plan. The proposed system should play the role of a consultant in the field of environmental legislation. It should offer the user a list of environmental protection measures corresponding to their project. The design and application of the expert system will lead to several positive effects: faster development of project materials, improved quality of planning, reduced number of mistakes, lower cost of assessment, increased confidence in the environmental section of the business plan by third-party participants, increased literacy of users of the expert system in the field of environmental protection.
Evaluation of the wind comfort of a person in the Krasnodar territory
Authors: Kuzyakina Marina , Gura Dmitry , Ternovoy Evgeniy , Daisheva Almira
Published: May 2023

The purpose of the study is to analyze and identify the most unfavorable pedestrian comfort zones in the Krasnodar Territory. The article uses a methodology for assessing pedestrian comfort, which takes into account the distribution of wind speeds along the wind rose, the pulsation component and the average wind speed, the duration of the manifestation of wind speeds in a certain direction. The assessment of comfort occurs according to three levels of comfort, the excess of which indicates the negative impact of wind on a person. As a result of the work, calculations were carried out according to the methodology used. Cartographic materials have been created and the most unfavorable wind zones have been identified, where the critical value of pedestrian comfort is exceeded.
Decision aid expert system for Russian Arctic sustainable development under climate change
Authors: Abramov Valery , Prostakevich Konstantin , Abramova Alexandra , Burlov Vyacheslav , Shilin Mikhail
Published: May 2023

Recently, socio-economic development of the Russian Arctic and Subarctic have form of planning and implementation of a set of large infrastructure projects under climate change. Currently, many businesses are planning and implementing a wide range of information technologies, including area of natural risks management, where it is required the development of new technologies and tools. The purpose of research was development of geo-information support system for managerial decision while natural risks management in Russian Arctic under climate change. Data bases and tools of different geo-information digital online platforms was used in research. There are demonstrated possibilities of developed geo-information support system with examples for area around the liquid natural gas product factory at Russian arctic seaport of Sabetta. As essential result, it is proposed to use remote sensing as basement for natural risks management within socio-economic development of the Russian Arctic. Presented research results can be useful for different users.
Retrospective analysis and current priorities of winemaking development in Southern Russia
Authors: Kuzmina Anna , Bogatkevich Tatiana , Olefirenko Olga , Katamadze Nadezhda
Published: May 2023

The development of winemaking in southern Russia has a centuries-old tradition. The peculiarities of winemaking development in the Crimean peninsula should be considered on a case-by-case basis due to the special geographical and climatic conditions and the distinctive historical development of the region. The accession of Crimea to the Russian Empire not only gave a new impetus to the development of the industry on the peninsula, but also opened a new page in the history of Russian winemaking. The Russian elite quickly assessed the economic prospects of the region. Natural conditions led to the existence of three winemaking zones in Crimea, which, despite the change of historical eras, still reflect the conditions of winemaking on the peninsula. To assess the condition of winemaking on the peninsula, a retrospective analysis of the industry's development since Crimea was annexed to the Russian Empire in 1783 was made, and three major periods in the history of winemaking, corresponding to the general course of historical events in Russia, were highlighted: Crimean winemaking in the Russian Empire, development of viticulture and winemaking in Crimea in the Soviet period, and the dynamics of industry development at the present stage. The study analyses the main problems facing the industry at the present stage. At the same time, statistical data and examples confirmed the role of Crimean winemaking as one of the fundamental branches of the Crimean economy, based on a rich historical experience, but also actively developing in line with modern trends.
Smallpox in turkeys
Authors: Safarova Zakiya , Gaziyeva Gulandom
Published: May 2023

The article describes epidemiological diseases of animals, in particular smallpox of birds. The disease of turkeys, such as turkey pox, its spread, transmission, signs and treatments are revealed. In our country, animals are mostly bred in rural areas. The quality and ecological purity of their products is better than that of products grown in specialized farms and poultry farms. Since, in rural areas, local and traditional methods are used to treat livestock and poultry. Although the level of exposure to chemicals is high, it is not always recommended to use them, in rural areas much attention is paid to ensuring environmental cleanliness of products. Therefore, in our scientific observations, research and experiments, we also used environmentally friendly methods that are widely used by the rural population, and our results satisfied us from a practical and scientific point of view. We have conducted scientific studies of smallpox in birds – one of the epidemiological diseases that occur in poultry in the autumn-spring period. Experiments were conducted on turkeys and their turkeys, in particular chicken. During the experiment and scientific research, the speed of the spread of the disease, its individuality, resistance to chemical and natural agents were observed. In the treatment of smallpox of birds, in addition to chemicals, crushed fresh leaves and stems of plantain lanceolate (Plantago lanceolata), shepherd's bags (Capsélla bursa-pastóris), alfalfa plants (Medicago sativa) were widely used. The use of green plant masses positively affected the appetite of turkeys, satisfying their need for vitamins C, K, and antioxidants.
Soil stabilization by injection of mineral complexes
Authors: Efimov Boris , Mihailik Ekaterina , Sanko Diana
Published: May 2023

Soil stabilization and strengthening is a necessary complex of engineering measures and can be carried out by introducing organic or mineral substances into the soil which increases soil viscosity and its mechanical characteristics. Soil modification can also be accompanied by mechanical pressure, as well as temperature influence. Judging by the results of the analysis of the state of the issue, a hypothesis was formulated, according to which an improvement in the operational characteristics of the soil is possible as a result of the use of a stabilizer based on quicklime and an active mineral additive. The object of the study was light sandy loam. The experiment was carried out using mathematical planning methods with subsequent statistical processing of the results. The following are accepted as variable factors: the consumption of quicklime, the consumption of ground slag and the specific surface area of ground slag. The strength of the modified soil at the age 28 of hardening under laboratory conditions and its average density were taken as response functions. It was established that the introduction of quicklime and finely ground slag could significantly improve the operational characteristics of the soil as a result of analytical optimization of the obtained strength and density functions of the modified soil.
Climate agenda in the southern region of Russia: the view of the agrarian university students
Authors: Chudnova Olga , Kosnikov Sergey , Lesnykh Juliya , Isaenko Alexander , Ivashova Valentina
Published: May 2023

The article presents the results of a brief theoretical review of approaches to the study of the climate agenda and an empirical study of the attitude of students of the Agrarian University to climate change issues. A brief review of scientific publications from the science-intensive Scopus database showed the main directions of research of the subject field in the sphere of social dimensions, methodology, theory and methods of obtaining empirical material. We have developed a toolkit for conducting a survey in the youth student environment of the Agrarian University; it is based on the analysis of the obtained theoretical generalizations. 497 respondents from full-time students of Stavropol State Agrarian University took part in the survey (Stavropol, Russia). Methodological recommendations have been developed for improving educational programs of higher agricultural education in the field of climate literacy – the ability to formulate, apply and interpret climate knowledge in professional activities; understanding the direction of climate change and the corresponding transformations of professional activity in the agricultural sector of the South of Russia (Stavropol Krai, Russia). Attracting the attention and involvement of future agricultural specialists in the discussion track of the development of the climate agenda is an important factor of professional competence.
Remote monitoring of factors determining the environmental safety of urban areas
Authors: Yeprintsev Sergey , Kurolap Semen , Klepikov Oleg , Vinogradov Pavel
Published: May 2023

On the example of the cities of Central Russia, a spatial assessment of the environmental safety factors of the urban environment based on the materials of remote sensing of the Earth was carried out. The data source was multichannel satellite images taken from the Landsat-8 and Sentinel-2 satellites for the period from 2015 to 2022. To assess the dynamic characteristics over a twenty-year period, satellite images of the studied territories from the Landsat-7 satellite for the period from 1999 to 2001 were used. To assess the level of anthropogenic load exerted on the studied territories, 4 zones were identified – with a strong anthropogenic load; with an average anthropogenic load; natural framework; hydrological objects. The largest territory is occupied by areas with an average anthropogenic load, which includes low-rise buildings, agricultural landscapes. Most of this area falls on agricultural fields located near the city. The specific weight of the natural framework is from 8 to 12% of the study area, which is not sufficient to ensure environmental safety. The assessment of the dynamic characteristics of anthropogenic load in all the studied territories shows an increase in zones with a strong anthropogenic load due to the reduction of territories with an average anthropogenic load, which is explained by socioeconomic reasons for the development of these territories. As a positive aspect, it is necessary to highlight the increase in the natural framework zone on the territory of the Voronezh city district over a twenty-year period.
Problems and solutions of ensuring food security in Uzbekistan
Authors: Toshboyev Abduraim , Bustonov Komiljon , Davlatov Sanjar
Published: May 2023

In this article, the results of the ongoing reforms on the continuous supply of food products to the population of Uzbekistan are discussed. The rate of growth of agricultural products per capita, the state of use of available land resources, the state of production and service by the farm, the prospects for production and development, and the increase in demand for food products in the world and in Uzbekistan are presented. The analysis of the increase in demand due to the sharp increase of the population, the sharp decrease of water lands, and the production of agricultural products in Uzbekistan is studied. It was determined that the excess of the medical norm is exported to foreign countries, and various issues affecting it were studied and analyzed theoretically and practically, and the demand for material resources was not met. Climate changes, systematic failure of economic forms, advantages of cooperation system, and shortcomings in implementation of innovative policy are listed. The place of agriculture in the country's GDP, the problems of growing the required products on inefficient arable land.
Use of modern management mechanisms in digitalization of housing construction study status
Authors: Normurodov Sarvar , Karieva Gulnora , Rasulova Mukhabbat , Islamov Farkhod , Yuldashev Otabek
Published: May 2023

Underlying all the reforms implemented in our country is the noble goal of ensuring human interests. In this regard, the fundamental changes implemented in life are aimed at increasing the welfare of our people. In particular, issues such as improving the quality of housing and communal services, improving the housing stock management system are being solved step by step. Since there is no single system in this regard, all countries carry out this activity in their own way or based on the experiences of advanced countries. Today there are 32,000 contracting organizations in Uzbekistan. By September 1, 2020, the task was set to launch a single platform covering information such as financial indicators of construction enterprises, solvency, state procurement, and employee qualifications. This platform will be introduced in Tashkent until November 1, and throughout the republic from the beginning of next year. The electronic labor record system will also be integrated into it. This article describes housing, housing construction, digitization, modern management system, use of management mechanisms, application of IT technologies in housing management mechanisms, correlation analysis, regression analysis, and forecast values of essential indicators related to housing stock management.
Vitamin feed supplement for fish based on chlorella vulgaris
Authors: Shukurov Akmal , Mirtalipov Dilshat , Kuzmetov Abdulakhmet , Imanova Dairash , Soatov Utkir , Kakhramanov Boymakhmat
Published: May 2023

The obtained data on the cultivation of chlorella in a nutrient medium containing macro and microelements based on local raw materials practically corresponds in terms of efficiency to the traditional Tamiya nutrient medium. Thus, innovative technology has been developed for obtaining an inexpensive, highly effective vitamin feed additive based on Chlorella vulgaris to replace artificial vitamins in fish feeding. The resulting water-soluble complex of macro and microelements makes it possible to completely replace expensive chemical elements in the cultivation of Chlorella vulgaris. Thanks to this, you can get an inexpensive vitamin-protein supplement for feeding fish. The presence of a full complex of natural vitamins in Chlorella vulgaris makes it possible to abandon expensive artificial vitamins when feeding fish. The effectiveness of which is only 5-10%, when natural vitamins are absorbed by 100%. All this reduces the use of expensive premixes that are added to fish feed.
Scientific basis of the influence of the period of harvest (phase) on blood mass yield of claffer
Authors: Atabaeva Khalima
Published: May 2023

A person should take about 90–100 g of protein day, largely from animal sources, despite the growing need for vegetable protein. Animal feed with insufficient protein causes them to consume excessive amounts of fodder, increasing their need for plant protein. The production of plant protein must significantly expand in order to fulfill the demands of animal husbandry. The demand for vegetable protein is on the rise, and it is recommended that an individual should consume approximately 90-100 g of protein per day, primarily sourced from animals. Insufficient protein in animal feed results in a higher consumption of fodder, which in turn necessitates an increased intake of plant protein. The experiment took place at the Tashkent State Agrarian University's experimental farm, located in typical gray soil conditions. The soil consists of a 25cm driving layer and a 50cm humus layer, with 1% humus, pH level of 7, and mobile phosphorus, chlorine, and nitrogen levels of 1.5-2.9 mg/100g, 22-25 mg/100g, and 3.8-4.2 mg/100g, respectively. It was found that the nutritional quality of alfalfa is also influenced by its growth stage, with the highest protein content observed in the stem growth phase in the Tashkentskaya-1728 variety. By the time of flowering, the protein content has decreased significantly.
Degree of encountering of representatives of the family of poultry in the solanaceae family grown in greenhouses
Authors: Saidov Istam , Toxbaev Bakhtjon
Published: May 2023

We have set ourselves the main goal of identifying the types of thrips that cause serious damage to the members of the family of the ituzum family grown in greenhouses, their level of occurrence, and mainly to give recommendations for the production of thrips-resistant varieties of Bulgarian pepper. At the same time, the introduction of the improvement of the combined control system by studying the stations and gradations between insects, population density in greenhouses. The organization of the cultivation of vegetable products that is ecologically clean and in accordance with international standards is a partial solution to the main pressing issues facing the agricultural workers today.
Differentiation of transportation micro, small, & medium enterprises (MSMEs) in Thailand
Authors: Potjanajaruwit Pisit
Published: May 2023

This research aimed to study the differentiation that affects the competitiveness of transportation Micro, Small, & Medium Enterprises (MSMEs) in Thailand. The sample population explored in this study consisted of 287 entrepreneurs from MSMEs from Thailand. The collected data were analyzed using Multiple Regression Analysis, along with additional feedback and opinion analysis. The results showed that differentiation in products, services, personnel, distribution channels, and brand image affect the competitiveness of MSMEs at a statistically significant level of 0.05. The areas of differentiation found with the greatest influence were personnel, products, and services respectively. Therefore, entrepreneurs and executives involved in differentiation of transportation MSMEs should focus on good service. Most of the businesses in Thailand are small businesses and have a small number of personnel. This enables thorough supervision of personnel from the business owners to ensure they provide good service to customers. Whereupon differentiation in product appearance by designing products or packaging to be outstanding, unique, attractive, and diverse. For example, processed fruit businesses may design their packaging to look like real fruit, or there could be environmentally friendly packaging designs which are popular among consumers today.
Impacts of organization agility on the airline performance outcomes
Authors: Nisara Paethrangsi , Parnkan Vijitsanguan , Sombat Teekasap
Published: May 2023

Organization Agility plays a vital role in the survival and sustainability of organization, particularly in the new normal period. Therefore, the objectives of this research are: 1. To identify level of external forces that influence organizational agility, and 2. To study the impact of leadership, workforces, technology capability, and creativity and innovation agility on airline performance. Data were collected the via e-mail and in-person surveys from 250 randomly selected Thai airline employees and 250 passengers, and the response rate was 76.40% (382 responses); then interviewed, 13 experts were to confirm those quantitative results. Data analysis was a descriptive analysis using percentage, standard deviation, and mean. The data were then analyzed with a structural equation model (SEM). We found that external forces influencing organizational agility are economic pressures, competitors’ performance, and air travel health risks at significant impact. Leadership, Workforce, Technology capabilities, and Creativity & Innovation (CRIN) directly impact organizational agility. Innovation is perceived as the least important compared to Leadership, Workforces, and Technology capabilities, respectively.
Guidelines to reinforce airline professionals’ quality of life through new career advancement: a case study of Thai airways flight attendants
Authors: Charernnit Kanittha , Treruttanaset Pongsapak
Published: May 2023

The goal of this research is to determine how to reinforce flight attendants' quality of life through their new career advancement after the corporate restructuring according to the rehabilitation plan of Thai Airways International Public Company Limited which driven by the spread of COVID-19 epidemic. This is a case study of a flight attendants of Thai Airways International Public Company Limited. In order to verify the findings, the qualitative and the quantitative research approach are implemented. The data collected by in-depth interviews from flight attendants who have resigned from Thai Airways International Public Company Limited and the referral was made until the response from 30 people was received. Moreover, data were gathered from a survey of 100 people and then using statistical analysis of percentage, mean, and standard deviation. The results showed the guidelines for managing and increasing flight attendants’ quality of life from their new career advancement consist of 7 new careers as follows: The first career is doing business online. The second career is running a personal business by setting up a shop to sell goods. The third career is working as a food delivery driver (Rider), running a delivery service, or transporting items from an internet freight forwarding company by using their own transportation. The fourth career is a driver for super application called “Grab” for passenger transportation and delivery service. The fifth career is to support in family business affairs. The sixth career is being a relationship manager, career blogger, YouTuber, as well as influencer by employing various online platforms to make money. The seventh career is being an insurance broker.
Modeling the seamless cargo logistics development
Authors: Tagilceva J.A. , Kuzina E.L. , Vasilenko M.A. , Vasilenko E.A. , Zaryan A.Z. , Limanchuk L.N. , Glinsky A.A. , Gasanov A.M.
Published: May 2023

The key direction of the development of the transport industry is the development of multimodal transportation using information technology. The most pressing issues are the development of transport logistics systems. They have acquired crucial strategic importance for ensuring competitiveness and a new level of development of the cargo containerization sphere using logistics approaches and management tools. Seamless cargo logistics is a strategic goal of the transport sector. The paper presents a theoretical justification for the use of modeling strategies for the development of a transport logistics system. The rationale for the expediency of using simulation modeling is presented. This simulation model creates conditions for the study of the transport logistics system of the region and the formation and implementation of the transport services market.
3D urban transport environment
Authors: Prokhorov Viktor , Rozhnov Ivan , Maslova Olga , Kuklina Anna
Published: May 2023

The paper investigates issues related to the solution of problems in the development of public transport infrastructure in urban agglomerations. The opportunities of further development of the existing typical city public transport infrastructure have been studied. The conclusion about the possibility of reforming the existing typical urban public transport infrastructure is drawn. It is proposed to use the available airspace together with the ground and underground public transport as a direction for the development of urban public transport infrastructure. The formation of an urban transport 3D environment is studied. It is shown that the joint application of all three urban transport environments will significantly expand the potential of urban public transport infrastructure. The possibility of using ultralight aircraft as an air vehicle is considered. It is proposed to use new types of aircraft as air vehicles. The prototype of an aircraft based on cylindrical vane propellers under the code name “Cyclolet” is described. Its flight technical characteristics are given. The conclusion about the possibility of using an aircraft of the “Cyclolet” type on the basis of cylindrical vane propellers as an air vehicle in the organization of permanent public transportation in urban agglomerations in the Russian Federation and abroad is drawn.
Determination of rail deformations using fiber optic technologies
Authors: Izotov Konstantin , Loktev Daniil , Loktev Alexey , Karimov Baktybek , Salnikova Alexandra
Published: May 2023

This paper discusses the application of the fiber-optic technologies in measuring the parameters of the stress-strain state of a seamless track rail. Measuring modules are attached directly to the side surface of the rail and contain fiber-optic sensors with a special structure for changing the refractive index along the length of the base part. The values of deformations are determined during full-scale measurements when analyzing changes in the parameters of the light pulses passing through an optical channel with Bragg gratings. The implemented approaches in measurements and simulation are relevant for the sections of the railway track that are most susceptible to deformations with a large gradient of values, for example, at turnouts, in the places of subgrade heaving, etc.
The method of building 3D map by the reconfigurable computing environment for unmanned aerial vehicles, drones
Authors: Thuy Trang Nguyen Hoang , Shidlovskiy Viktorovich Stanislav , Nguyen The Cuong
Published: May 2023

Unmanned aerial vehicle (UAV) is a flying device that is integrated with appropriate hardware and software, besides it is also a device to collect and process data to meet the needs and purposes of users. Currently, most drones use GPS technology to determine the flight path, and other sensors on it are used to determine distance, avoid collisions. However, with small, narrow spaces, dangerous environments that humans cannot go into that space, GPS not working, small drones with small hardware devices placed on it to map themselves and navigation would be a suitable solution. In this paper, a method to build a high-performance reconfigurable computing environment model to map drone as well as UAV flying in 3D space is proposed. Mapping based on Boolean formulas with reconfigurable structure and adjustable automatons will generate high-precision maps for efficient robot navigation.
Modern studies of heat losses of a building basement through a soil mass
Authors: Zubarev Kirill , Zobnina Yulia
Published: May 2023

This study aims at considering the methods of calculating heat losses to the soil through the floor structures of the basement. Classical methods of calculating heat losses through the soil according to the updated set of rules are presented. Modern methods of calculation based on mathematical modeling have been studied. A full-scale experiment of one of the developed methods that proves the possibility of its application and the need for further enhancement has been considered. Methods for estimating the resistance to the heat transfer through the soil are introduced. The method of “concentric circles” is presented in comparison with the given values in Set of Rules 50.13330.2012. A comparative analysis of new methods with standard methods for calculating heat losses to the soil through the basement floor structures was carried out. Such methods as calculation “by zones” based on the principle of dividing the basement floor into strips have been studied. Various options for the building basement insulation that can affect the heat losses of the building have been considered. An analysis of the factors influencing heat loss such as the type of soil, the geometric dimensions of the building, the actual heat transfer resistance of the insulation, the temperature regime of the room and the presence of insulation has been presented. The formulas for calculating the complex heat-shielding characteristic in accordance with modern changes in the regulatory documentation are given.
Exploitation of reinforced concrete constructions on a ground base with force and environmental influences
Authors: Berlinov Mikhail
Published: May 2023

A calculation method is proposed, based on the basic starting points of the modern phenomenological theory of a non-linearly deformable elastic-creeping body, taking into account corrosion damage under environmental and force influences in conditions of long-term operation. The influence of reinforcement is investigated based on the compatibility of concrete and reinforcement deformation. Mathematical dependences are obtained that allow us to develop solving equations. These basic phenomenological resolving equations allow us to calculate reinforced concrete elements that work without cracks and with cracks from the point of view of the nonlinearity and rheology of concrete deformation. A method of linearization of the problem based on integral estimates is proposed, which provides fixation of rheological and corrosion processes in the considered period of operation. The implementation of this method will allow us to find a numerical solution to the problem using the method of integral estimates based on the step-by-step method and successive approximations. An example of the calculation of a reinforced concrete flexible foundation on a soil base is given for the considered service life and the presence of corrosion damage. Such an approach in the design of reinforced concrete structures will not only allow for more fully considering the real conditions of their work, identifying additional reserves of load-bearing capacity, but will also open up additional opportunities for analyzing and predicting their functioning at various stages of exploitation.
The influence of concert hall architecture on acoustics (the effect of musical performance)
Authors: Linsong Li
Published: May 2023

The article analyzes the influence of the architecture of the concert hall on acoustics and the formation of the effect of musical performance. The author notes that the architecture of a concert hall can be of great importance in providing an acoustic effect. In addition, the acoustics of a concert hall can influence how musicians perceive their playing and how the audience perceives the work. Some factors that may affect the acoustics of a concert hall include the shape and size of the hall, the materials used to finish the walls and ceiling, the location of the stage and audience seats, as well as acoustic equipment. The shape of the concert hall affects how sound waves are reflected inside the hall. An ideal concert hall should have a shape that allows sound waves to spread evenly in all directions and reflect off the walls and ceiling in such a manner that a uniform sound background is created. This helps to create clarity and clarity of sound. At the present stage, special software tools are used to simulate sound in the hall, experiments are carried out with various acoustic materials and the arrangement of elements in the hall, and experienced architects who have deep knowledge in the field of acoustics and sound engineering are also involved.
The mechanism for managing cultural heritage objects, taking into account the possibilities of the digital environment
Authors: Meshcheryakova Tatiana , Zueva Elena
Published: May 2023

The article highlights the problems of exploitation of cultural heritage objects, which characterizes the subject area of the study. The classification of objects of cultural heritage and features of their definition in different countries are presented. The analysis of statistical data on cultural heritage sites in the Russian Federation, including those included in UNESCO, was carried out. The features of management, as well as the problems of monitoring the state of cultural heritage objects are considered. A separate and fundamental issue of management of cultural heritage sites is security activities, which are based on unique models formed by different countries based on their experience. A mechanism for managing cultural heritage objects in a digital environment and a universal conceptual model for introducing digital technologies into the system of real estate operation are proposed.
The importance of automating the “Construction” phase of the construction project life cycle
Authors: Ivanov Nikolay , Ivanov Dmitry
Published: May 2023

Significant innovations in the regulatory framework of the construction industry of the Russian Federation force construction organizations to change their attitude to digital technology in general and automation in particular. The existing objective differences of construction companies, carrying out their activities at different stages of the life cycle of construction products, put them in different initial conditions on the way to solving the problem. In the present study, the authors analyze the level of elaboration of a number of issues that arise at different stages of the construction project life cycle (CPLC). As a result of the analysis, the authors conclude that there is a lack of attention to digitalization at the stage “construction”. In particular, it is noted that little attention is paid to the automation of the management activities of companies at this stage of CPLC lifecycle. The authors analyze possible approaches to the automation of management tasks of a construction organization that directly erects buildings and structures. As a result, key features of approaches to the formation of task complexes for automation for two different groups of departments of the management apparatus of a construction organization are formulated. Based on the results of the study, the authors conclude that in order to ensure the effective functioning of construction companies and organizations the use of digitalization technologies at all stages is mandatory.