bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modelling of Optimization of Conditions for the Transition of a Megalopolis to a Cluster Group with the Best Quality of Life Indicators
Authors: Ershova S A , Orlovskaya T N 
Published: March 2021

Abstract
The article presents the results of a cluster assessment of Russian megalopolises based on the indicators of the human development index and the quality of life of residents. Based on the calculated data of cluster analysis, a model for optimizing the conditions for the transition of a megalopolis to a higher-ranking cluster group has been developed. The optimization model uses the most significant indicators for the city’s economy: the income index, per capita income, and the subsistence minimum. According to the modelling results, there have been composed the regression equations for the HDI of the megalopolis and regression equations for the multidimensional average of socio-economic indicators of the megalopolis. The authors have calculated the indicators of growth factors necessary for the transition of a megalopolis to a higher-ranking cluster and compiled a forecast matrix for clustering megalopolises with changed factors.
Research on the Physical and Mechanical Characteristics of Stabilized Soil Subgrade of the Central Yakutia
Authors: Nikolaeva G O 
Published: March 2021

Abstract
This work presents the results of research four soil samples were taken from the streets of the Gorny District, also tested for compressive strength before and after water saturation and swelling and estimation of physical and mechanical properties of soil stabilized by cement addition. The main aim of this paper was to estimate the optimal cement and water content in soil. The results of a study of the influence of the degree of compaction and temperature on the coefficient of moisture conductivity of thawed and frozen soils are presented. Plots of the dependence of the coefficient of moisture conductivity (KW) are constructed and the corresponding conclusions are drawn.
The Image of the Urban Environment in the Context of Tourist Attractivity of Vladivostok
Authors: Metlyaeva T V , Falko L Yu , Klochko I L 
Published: March 2021

Abstract
This article deals with the factors that make the urban environment attractive to visitors from Russia and abroad in the context of developing internal and external tourism in Russia. The research relies on the marketing and axiological approaches to determine the notion of urban environment image.
Its results show that the positive image and tourist attractivity of Vladivostok is determined by its history, unique geographic location, abundant natural resources, and stunning landscapes. The development of the urban environment in Vladivostok does not correspond with its tourist potential and tourist attractiveness. The image of Vladivostok is undermined by the uncomfortable and unsafe urban environment (bad street lighting, poor condition of roads and stairs), low quality of service, high prices, environmental problems (air and beach pollution, lack of green spaces, low water quality).
The practical results of this research work include recommendations on the improvement of the image of the city and its tourism attractivity (especially in winter).
Elements of Economic and Visual Modeling as a Tool for Managing the Life Cycle of Construction Projects
Authors: Kazaryan R , Andreeva P , Galaeva N 
Published: March 2021

Abstract
The methods of visual modeling are considered, which allows effective implementation of construction organization projects. The economic and visual model is the elemental base of infographic modeling systems, which contributes to making the most rational organizational and technological decisions. The aim of this work is to study the efficiency potential of the economic and visual model, as well as the possibility of reducing all kinds of costs when developing projects by introducing economic and visual modeling. Some aspects of the current experience of using this model are studied. Based on a literary analysis of the work of economic and visual modeling, a comparative analysis of domestic and foreign authors is carried out. Based on the information model (BIM), the optimal organizational and technological solution is selected. As a result of the analytical study, materials and data on the practical application of the economic and visual model in the territory of the Russian Federation were studied. A summary table is provided. Based on the results of a theoretical study, conclusions are drawn about the need to form information methods for modeling the organization of construction production.
Influence of Base Deformations on Stability of Frame-Rod Structural Systems
Authors: Emelyanov S G , Dubrakov S V 
Published: March 2021

Abstract

Purpose of research. Investigation of changes in the critical parameters of stability of structural system elements, taking into account the geometric nonlinearity associated with the deformation of the “building-base” system. Methods. Under the influence of geometric nonlinearity associated with joint deformations of the “building-base” system, the longitudinal force of some racks ceases to contribute to the bifurcation of the rod [5-7, 9, 12, 13]. Therefore, at a certain value of strain ΔS, a single rack can go from active bifurcation to passive, which will cause structural and change the critical stability parameters of the entire system under consideration. This situation can lead to irreversible deformations and destruction of both the individual load-bearing element and the entire building. Results. Let’s consider a core structural system, the Central element of which is loaded with The RCR force, and the extreme elements are loaded with the RCR forces. (Fig. 1A). We find the critical parameters of the stability of the specified frame and the form of bifurcation of its compressed struts using the given equations depending on the load application coefficient α before and after stabilization of the base precipitation.
Let’s analyze the bifurcation pattern of the frame elements before and after the base deformation at the maximum precipitation of the second and third pillars at the value of the load application coefficient α=0.8 at a time when the base deformations have not stabilized, the left and right pillars lose their stability passively, the Central one-actively (Fig. 3A). Analysis of the obtained calculation results showed that when the second column precipitation is 2.4 cm or more, the character of the entire structural bifurcation system changes. Conclusion. During the theoretical research, the behavior of the elements of the frame in question during the loss of stability before and after the occurrence of an emergency situation associated with the subsidence of the base of the supports of the first and second pillars was analyzed. The dependence of the critical value of the precipitation and the difference in precipitation on the load application coefficient α for the second and third pillars of the frame was derived. Analysis of the obtained calculation results showed that when the second column precipitation is 2.4 cm or more, the character of the entire structural bifurcation system changes.
Optimization of the Vehicle Movement Modes
Authors: Kudryavcev E , Mollinedo D 
Published: March 2021

Abstract
Article describe process of optimization of vehicle movement modes. This task belongs to the class of combinatorial tasks. When in our task we take only six sector of the road and five transfers in each sector then number of the possible vehicle movement modes will be 18750. For decision of the task we use equation recurrence of Bellman, according to which the optimal choice has the property of independently from the initial state and solutions at the initial moment the subsequent solutions must be optimal. This allows to replace search of extremum of a function with many variables by search of extremum of a function with one variable. For optimization we use Mathcad system. The proposed procedures of optimization of vehicle movement modes allow to reduce time and costs of such calculations at least in several hundred times and effectively to carry out researches in any usage mode and exploitation of vehicles, providing good visual presentation of received results.
Characteristic Features of Urban-Planning Solution of “Udarnik” Health Resort in Zheleznovodsk
Authors: Sidorenko N R , Tokarev A G 
Published: March 2021

Abstract
Already during the first years of the Soviet regime the government prescribed a line of improvement concerning the state of health resort areas of the country in order to provide proper recreation to the working population. In this connection a vast building program of new health resorts, medical and recreation centers is launched in the towns of the Caucasian Mineral Waters; the development of those took into consideration two essential peculiarities of the territory – its mountain terrain and a specific structure of historic development. The case in point of such design is the building of “Udamik” health resort in Zheleznovodsk; in its urban-planning solutions the authors of the construction, I. A. Fomin and M. I. Roslavlev, managed to reflect influence of the surrounding low-rise residential development and considerable changes in elevation and irregular terrain of the plot.
Project Education in Design. Innovations or Traditions?
Authors: Stratonova L M , Kvashnina O V , Gilmutdinova E V 
Published: March 2021

Abstract
The importance of the given article results from active new teaching technologies integrating into the educational system in Russia. The necessity for Russia’s education to shift to up-to-date forms is recognized by everybody in the scientific community. Prospects of project scenarios of acquiring knowledge are evident to everybody. Sooner or later, all persons involved, from professors to students, will have to solve these problems, but in practice, the problems are not so complicated as they seemed at the start of the reforms. Newest technologies in modern education and a historical experience of training specialist in architecture and art will make it possible to solve problems of creating scientific teams based on new cooperation principles. The objective of the given article is to focus the interest of colleagues of all areas of knowledge on the theory and practice of project education in leading scientific schools involved in training specialists in architecture, design, and culture. These areas of education possess a rich experience thanks to many generations of architects, designers, and artists working in decorative art, this experience produces amazing results. A new educational space that is being formed nowadays, puts forward a demand for multifunctional specialists, any experience being appreciated here. A method of solving the problem of shifting to project educational technologies in Russia was stated, among others, in the architectural and design education methodology. Being a work-through principle, project technologies concern all the subjects and meet the demands to form of a complete scope of competences of specialists in these aspects. This article propositions can result in a basis for new project education methods elaboration and fundamentally new educational medium formation. In the first place, these methods are directed to the problem to motivate creative search and form imaginative and project thinking. Nature as a source of inspiration, a factor of shape design and style, and actual problems of preserving it, can become a new content of many projects. A new attitude to the educational space as an integral body will support creating an ideal medium for interaction and development of all participants of the educational process on a permanent basis in future. That is a medium, really beautiful and comfortable for scientific and professional development and perfection.
A Study of a Comprehensive Quality Indicator of Multi-Storey Residential Buildings While the Indicators of the Groups Factors are Changing
Authors: Lapidus A , Shesterikova Y 
Published: March 2021

Abstract
The most significant eight parameters that affect the quality of a multi-story building object are identified. In the form of a regression model, a linear, quadratic, and general quadratic model are used. Based on the results of the studies, it was concluded that the most adequate model is the general quadratic model. The dependence of complex quality indicators of residential multi-storey buildings of the specific group of factors is studied. A three-dimensional surface graph of the regression equation is constructed based on the various groups of factors. A series of 6 dependencies in a graph describes the alternating effect of 2 groups of factors on changes in a comprehensive quality indicator.
Resources and Opportunities for the Functional and Spatial Development of the Kama Agglomeration
Authors: Dembich A , Zakirova Y , Latypova M 
Published: March 2021

Abstract
The main objectives of the study presented in the article are to study the prerequisites for the formation of the Kama agglomeration, to identify factors and trends in its spatial development, and to identify features of the formation of the urbanized framework of the territory. Strategic materials of socio-economic development of settlements that make up the agglomeration and documents of territorial planning are studied. A principal model of the functional and spatial structure of the Kama agglomeration is proposed.
Consideration of Temperature Stresses in the Calculation of Crack Formation in Concrete Massifs of Buildings
Authors: Sazonova S A , Nikolenko S D , Akamsina N V 
Published: March 2021

Abstract
Computer simulation of the thermal stress state of a concrete foundation slab of a building is considered. To simulate the thermal stress state, the specialized Midas Fea software package is used. The actual tensile stresses in concrete are compared with the maximum allowable values taking into account the equivalent age. It was established that the likelihood of cracking due to sudden changes in temperature is high, which entails the likelihood of destructive processes in concrete. Using the software package, calculations were made and graphs of the temperature changes in time at the control points were plotted, as well as the isofields of temperature distribution and crack formation coefficients over the volume of the considered array were graphically depicted and investigated. Based on the calculations and modeling of temperature processes in concrete, it is proposed to use surface thermal insulation or to reduce the initial temperature of the concrete mixture in order to reduce the heat transfer rate of the concrete surface.
Calculation of Crack Formation During the Thermal Stress State of Concrete Masses and Development of Measures to Improve the Operational Properties of Concrete
Authors: Nikolenko S D , Sazonova S A , Zvyagintseva A V 
Published: March 2021

Abstract
The modeling of the thermally stressed state of the building foundation slab is considered. The performed calculations took into account the occurrence of stresses as a result of heating the concrete mass during cement hydration. To simulate the thermal stress state, the specialized Midas Fea software package is used. In carrying out the research, materials from articles on the construction and examination of the current state of buildings and structures made of concrete and fiber-reinforced structures were used. At control points, diagrams of changes in temperatures, stresses, and crack formation coefficients in relation to the time of curing are obtained. The isopoles of temperature distribution and crack formation coefficients over the volume of the studied array are obtained. Measures have been developed to improve the operational properties of concrete, including engineering and technical recommendations to reduce the negative impact of temperature differences on the manufacturing process of concrete mixtures and foundations.
Individualization of Microclimate Air Conditioning Systems in Residential Premises
Authors: Rymarov A , Titkov D 
Published: March 2021

Abstract
Individualization of a person’s life is associated with the quality of the microclimate of the surrounding person in the room. Microclimate norms are associated with the satisfaction of about 75 % of people, however, 25 % is a variable that depends on the activity and characteristics of a person’s metabolism at any given time, as for the seemingly stable 75 %. The formation of engineering systems, taking into account the individual characteristics of a person, will make it possible to more economically spend energy resources and spend heat energy pointwise, taking into account the need for each person. When a person has an individual place at home, where a microclimate is created that is necessary for a specific person at any given moment in time. Changes in the climate surrounding the building must also be taken into account when forming the microclimate in the individual spaces of the building, taking into account the need for each individual person.
The Space of Buildings and Their Information Models as a Triad Structure
Authors: Losev K Yu , Chulkov VO 
Published: March 2021

Abstract
The article is devoted to an approach to the study and explanation of information processes of buildings and their information models over time, that is, in the course of their functioning: both during their life path and in the life cycle, when the physical part of a building ceases to exist, and information about its functioning is transferred using general data to create other buildings. Through the functionality of a building as a system, its commonality with cyberphysical systems is shown, and through the position on the position on the three-dimensional reflection in living nature, a tool for describing the space of buildings, structures and their information models is proposed in the form of a system categorical triad approach, supplemented by the position on the Ukhtomsky dominant, the position of category theory and the method of analogies. Using this infographic description of the subject area of buildings and their information models, you can create six basic and three derived results that are elements of the space of a cyberphysical system. It is possible to get a larger number of system elements through determining the results of the effects of results on each other. The presented systemic categorical triad approach based on infographic modeling does not depend on the initial number of parameters and the amount of data that are reduced to triads through monads and dyads and can be effectively investigated.
Modified Ceramics Based on the Pyrolysis Residue of Municipal Solid Waste
Authors: Kolibaba O B , Dolinin D A , Gusev E V 
Published: March 2021

Abstract
To successfully solve the relevant problem of recycling solid household waste (SHW) in Russia, it is necessary to move from its landfill disposal to industrial processing. A promising option is the pyrolysis of solid carbon-containing waste, which can significantly reduce the amount of waste, as well as obtain alternative types of energy. The use of products of solid household waste pyrolysis as a method of production of ceramics is proposed.
A new ceramic material was obtained where the solid residue of pyrolysis of an SHW mixture with average morphological composition was used as a structure-phase-forming additive. Chemical composition of the material, its average density, thermal conductivity and diffusivity, and specific heat capacity have been determined experimentally. It is recommended to use this ceramic material to manufacture building products for various purposes.
Features of the Power Work of Light Metal Structures
Authors: Alpatov V , Saharov A 
Published: March 2021

Abstract
Took into account experience of light metal constructions using in building. Paid attention to possible metal beams weight reducement ways. Interest to metal beams weight reducement appears, because they are widely used in modern building. Beams weight reducement is considered as an effective way of building spending reducement. The ways of reducing the material consumption of I-beams are formulated as manufacturing corrugated and perforated walls. Stress-strain state of corrugated beams numerical research results are shown. The results of solving the optimization task of finding the circular perforation geometry in the I-beam wall are presented. I-beam stress-strain state during bending under constrained torsion conditions research are presented. Made a conclusion about the efficiency of corrugated and perforated beams in comparison with traditional rolled beams. Concluded that it is necessary to take into account the stresses caused by the I-beam constrained torsion when the load adding eccentricity exceeds 15% of the flange width.
Examining Beam Oscillations in the Space of Technogenic and Seismic Impact Parameters (Part II)
Authors: Kulterbayev Kh P , Oshkhunov M M , Baragunova L A , Kabzhikhov A A , Bulanov S G 
Published: March 2021

Abstract
The proposed paper (Part II) is a continuation of another paper under the same name (Part I), published in this volume. Part II explores two types of forced oscillations: harmonic (polyharmonic) and random. The sources of oscillations are kinematic and dynamic effects which are concentrated on the boundaries and in the span. The mathematical problem of oscillations is presented as a boundary value problem from the basic equation in hyperbolic partial derivatives of the fourth order in spatial coordinates, of second order in time. The technical theory of bending oscillations of rods based on Bernoulli’s hypothesis is used. Practical conclusions have been made.
Tourism Planning of Rattan and Bamboo Villages in the Red River Delta, Applied to Thu Sy Craft Village, Hung Yen Province
Authors: Nguyen Huong T , Nguyen Thu H 
Published: March 2021

Abstract
Most of rural areas in the Red River Delta is home of traditional craft villages that have been established for hundreds of years with abundant cultural and historical values representing the culture of Viet Nam. Of which, traditional craft culture and other cultural heritages such as architecture, temples, landscapes, culinary culture, performing arts, festivals, etc. are precious values. They are valuable potentials for rural economy development in the increasingly rapid urbanization. By conducting field surveys of typical rattan and bamboo villages and analyzing documents, this discussion paper aims to assess the tourism development of traditional craft villages and their development potentials, then propose suitable structural models for tourism planning of rattan and bamboo weaving villages in the Red River Delta. The research results are applied in Thu Sy rattan and bamboo weaving village, Hung Yen province, Viet Nam.
Intergrating Building Information Modelling (BIM) and Tools with Green Building Certification System in Designing and Evaluating Water Efficiency of Green Building for Sustainable Buildings
Authors: Nguyen Thao P , Nguyen Viet-Anh , Pham Dong D , Do Hoang Q 
Published: March 2021

Abstract
Designing green buildings has become a common trend in many developed countries as a way to promote energy savings and environmental protection. In Viet Nam, the number of certified green buildings remains few, mainly applied LOTUS – the green building rating system introduced by the Vietnam Green Building Council in 2009. It is mainly due to the length of time it takes to design and evaluate green buildings. Applying the Building Information Modeling (BIM) in the design and evaluation of green buildings will address this shortcoming. The integrated BIM-Green Buildings solution kit efficiently provides the architects and engineers with a tool to make preliminary estimation of the green building scoring in term of water efficiency in their design phase; thus they can actively evaluate their performance against key green building criteria and accordingly adjust their designs to meet the criteria at the desired level. This software therefore saves designing time and facilitates the selection of suitable designs.