bluuebunny/crossref_metadata_2025 huggingface dataset:
Architectural design of residential modules using additive technologies
Authors: Drebezgova M Yu , Chernysheva N V , Klimenko V A , Olisov A V
Published: December 2019

The study focuses on the use of additive technologies in the field of architecture and design. The relationship between 3D printing technology and the main factors influencing the formation of the structural architectural typology is revealed. The main principle of the whole variety architectural forms systematization with a set of applied technologies and materials is traced. The impact of additive technologies on materials as well as on the concept of an architectural object and its function is analyzed in detail. The work developed and supplemented the features of the architectural objects’ formation using 3D-printing. The analysis and systematization of its practical implementation in Russia and abroad, taking into account the structural and functional features, is undertaken.
The shopping centers architecture features in the largest southern city of Russia
Authors: Molchanov V M , Molchanova K E , Irmanova E V
Published: December 2019

The article researches the role of shopping and multifunctional shopping centers, which are considered to be the largest places of attraction for the population and influential employers in the city, the most profitable type of commercial real estate. The information technology development, global logistics and the widespread introduction of the consumer society ideology as well as the population high motorization contribute to the increasing social importance of shopping centers in the modern world. Currently, shopping centers are becoming the most important architectural and social sites of the largest city. The article reveals the issue status today. The attractiveness and the need to introduce multifunctional shopping centers as places of attraction of the population in cities. Examples of world and domestic practice are given. The multifunctional shopping centers of the largest city in Russia, Rostov-on-Don, are analyzed in detail. Three concepts of a multifunctional shopping center are identified.
Museum as an element of multicultural space
Authors: Varitlova D.A
Published: December 2019

The purpose of the article is to show that museum having been one of the first establishments for a long time, became a multicultural space. The author describes the main stages of the museum spaces’ development and points out the cultural and social processes that influenced the functional composition throughout the whole history. The comparison of modern museum and proto-museum institutions is given, common features that stay unchanged and perform practically as a core of its’ functioning are highlighted. Moreover, the links between museum typology and ongoing processes in society are demonstrated and grounded. The article stresses out the museum spaces’ multicultural features and the way how urban environment changes in its turn, being influenced by it as a culture-forming establishment.
The Parametric Architecture Tall Buildings Implementation Aspects
Authors: Pimenova E V , Grigoryan M N , Ivanova P V
Published: December 2019

The presented article discusses the design of the high-rise buildings, created on the parametric architecture basis. The relevance of the topic is due not only to the identification of new directions in shaping high-rise buildings, but also to defining the parametric architecture main aspects implementation that has become possible in the digital technologies’ development conditions in the field of design and construction. On the basis of a comprehensive analysis of the experience in the design and construction of the parametric architecture high-rise buildings, the main areas of innovative technologies and materials application have been determined. On the conducted research basis, the main aspects of the high-rise buildings’ parametric architecture implementation that meet the sustainable development requirements are identified.
Building materials and technologies of modern housing: architectural and environmental aspects
Authors: Subbotin O S
Published: December 2019

The issues of architectural and environmental solutions in the design and construction of low-rise residential buildings, including the distinctive properties of building materials, due to the conditions of modern material culture, aesthetic features of the external and internal appearance of these buildings are considered. It is noted that the conceptual approach to the choice of the technologies in the implementation of the construction of these objects helps to determine the necessary organization and structural work, as well as additional artistic means of architectural expressiveness. It is also indicated that, along with architectural expressiveness, environmental safety becomes one of the main requirements for the comfort of living in a dwelling house. Considerable attention is paid to modern building materials and innovative technologies that form new creative challenges facing architects.
Features of the building materials use in architectural and urban heritage restoration
Authors: Subbotin O S
Published: December 2019

The article is devoted to the study of the building materials use principles in the restoration of monuments of architectural and town-planning heritage. The basic properties of the materials, classification and specificity of their use are indicated. As a result of the analysis, the most important role of the material in the formation of the architectural image of the object was substantiated. It is concluded that the material should be considered not only in the context of technical parameters, but also in terms of architectural and artistic characteristics. Attention is focused on the object authenticity meaning understanding and on the operational properties of the materials for decoration. It was noted that the choice of the materials should occur on the basis of the preceding stage of the material research, as a segment of a detailed survey of the technical state of the structure.
The new patents usage in the republic of Armenia during the ethnographic parks creation
Authors: Safaryan Ashot
Published: December 2019

A concept for creating an ethnographic park “Armenia of All Times” with the “Research Centre of Armenology” in the Republic of Armenia (RA) has been developed, where the achievements of Armenian architects from the ancient world to our days will be presented. The potential usage of a number of new RA patents in the design, construction and operation of Armenian ethnographic parks both in Armenia and in countries with an Armenian diaspora is considered. A conceptual model - a system, which provides an overall view of the subject is proposed. A brief description of a number of new RA patents obtained in 2016, 2017 and 2018 is given. The patents feature a movable rod - corrugated bulk structure for covering the archaeological objects found in excavations, a single-storey linear structure with a complex relief for the movement of visitors in the ethnographic park and pavilion coverings with fixed and adjustable structures for the presentation of various exhibits.
Laser scanning application possibilities in the engineering structures survey
Authors: Bogomolova N , Nikitchin A
Published: December 2019

The advantages of using laser scanning in the process of examining technically complex structures and deformations monitoring are shown on the realized objects example.
Objects selection and recognition during remote sensing images digital processing by means of LabVIEW
Authors: Levoniuk S V , Ginis L A
Published: December 2019

The article discusses the possibility of using the image processing module of the LabVIEW modeling system from National Instruments for the optical aerial and satellite images digital processing. The objects recognition and selection in the images is quite time-consuming process and requires a significant time investment with the involvement of highly qualified experts. In order to automate the object recognition process, the virtual instruments have been developed for converting multi-zone images into a pseudo-color image, as well as for decoding color and pseudo-color images. A method of identifying objects belonging to the specified classes based on replacing a color image with a grayscale and its subsequent binarization is proposed. Based on this method, the virtual instruments have been developed to automate the process of selecting objects and determining their geometric characteristics.
Avalanche processes as a limiting factor in the ski environmental management
Authors: Calov R O , Kondratyeva N V , Bekkiev M Yu
Published: December 2019

In accordance with the federal target program for the development of resorts in the North Caucasus, the Government of the Russian Federation announced its intention to build five more modern European-class ski resorts in the region over the next 10 years. Construction of complexes, including in the village of Veduchi (Chechen Republic is planned). In the territory of the “Veduchi” resort such dangerous exogenous processes as avalanches are largely developed. This work is devoted to engineering and hydrometeorological surveys for the object “Skiing infrastructure on the north-oriented slope of the Veduchi ASTRC”, assessment of avalanche danger.
The influence of the electric field on the crystallization of water droplets in the air flow
Authors: Balkarova S B , Sozaeva L T , Gekkieva S O
Published: December 2019

A technique has been developed for experimental modeling of the crystallization of water droplets in the air stream. It is shown that the electric field affects the crystallization of droplets. A multiple regression equation is obtained, which connects the time of complete freezing of droplets in the air flow with their size and medium temperature. The obtained results can be useful in laboratory and theoretical modeling of the mechanisms of freezing of droplets and in the implementation of methods for the active influence on thundercloud clouds and fogs.
Classification analysis of the meteotropic reactions of people depending on the intensity of the electric field of the atmosphere
Authors: Mashukov K Kh , Tashilova A A , Kesheva L A , Mashukov I Kh
Published: December 2019

The results of the study of the influence of the electric field intensity in the atmosphere on the frequency of exacerbations of cardiovascular diseases are presented on the example of the population of Nalchik. The seasonal trends of reducing both the average tension and the number of ambulance calls for diseases has been revealed. It was obtained that the challenges for disease are grouped into homogeneous factor groups. The group combining hypertensive crisis, cardiovascular diseases and angina pectoris (component 1) has a positive statistically significant dependence on the magnitude of the average daily intensity of the electric field of the atmosphere near the surface of the earth. According to the results of cluster analysis, the days with the maximum dependence between factor 1 and variations of the electric field intensity in the atmosphere were revealed.
The forecast of the thunderstorm on the basis of settlement fields of meteorological parameters of global prognostic model (GFS NCEP) for areas of Western Caucasus
Authors: Kagermazov A Kh
Published: December 2019

The main reasons for the lack of warning of dangerous convective phenomena are the lack of initial information, as well as the lack of traditional approaches to predict local rapidly developing processes. At present, the results of atmospheric parameters prediction based on global and mesoscale models have been successfully used in the study and forecast of thunderstorm processes occurring over a limited area. They are based on non-stationary three-dimensional equations of atmospheric hydrodynamics and parametrization of atmospheric processes (shortwave and longwave radiation fluxes, convective processes, boundary layer, moisture microphysics, atmospheric turbulence, heat and moisture exchange in the underlying surface).

In this article, according to the calculated output of the global atmospheric model (Global Forecast System GFS), a method is proposed for predicting lightning processes based on the statistical interpretation of the “model output” for the regions of southern European Russia.

For different climatic zones of the North Caucasus, statistical forecast models were constructed and the results of assessments of the development of thunderhair processes by the corresponding discriminant functions for characteristic regions of the southern European Russia — the Western and Central parts of the North Caucasus — are presented.
The response of the atmospheric electric potential gradient to the ash clouds of v. Shiveluch and v. Ebeko (Peninsula Kamchatka, Island Paramushir, Russia)
Authors: Akbashev R F , Firstov P P
Published: December 2019

In order to introduce a new method into the complex of instrumental observations for monitoring explosive eruptions, the authors analyze response intensity of the atmospheric electric potential gradient (PG) during the passage of eruptive clouds. In the area of the volcano Shiveluch there are two observation points of PG. Two eruptions of the Shiveluch volcano of various strength that occurred on 16.12.2016 and 14.06.2017 were considered. Ebeko volcano, located near the city of Severo-Kurilsk (7.2 km). During volcanic explosions, ash emissions to a height of 4-5 km occur. Monitoring of the atmospheric electric potential gradient will allow the passage of ash plumes over the city of Severo-Kurilsk to be recorded. The results of field observations for the period October 2018-June 2019 are presented.

This work was supported by the RFBR grant No. 18-35-00175.
Current state and prospects of development of passive radio engineering monitoring of storm activity
Authors: Kononov I I , Korovin E A , Shchukin G G , Yusupov I E
Published: December 2019

Passive radio engineering monitoring means of storm activity in VLF range are considered in the work. The comparative analysis of characteristics of modern Russian and foreign lightning location systems which have a broad practical application is carried out. Possibilities of improvement of precision and probabilistic characteristics of VLF methods and techniques for location of various types of lightning high current components are estimated.
Qualitative state improvement of public and courtyard areas in terms of Rostov-on-Don
Authors: Seferyan L A , Kondrateva T N , Morozov V E , Leusenko I V
Published: December 2019

Today the most important task in the development of modern Russian cities is the environment formation and maintenance that is favorable and comfortable for the population. The authors of the article revealed the main state problems of public and courtyard territories in Russian cities. Programs analysis of the urban areas improvement for the period from 2018 to 2022, aimed at the development of the urban environment provides an example of its successful implementation as applied to the city of Rostov-on-Don.
Temperature conditions in the all-season tourist and recreational complex “Veduchi”
Authors: Yurchenko N V , Khuzam A A , Tumgoeva Kh A
Published: December 2019

The work is devoted to the study of temperature conditions in the territory of the recreation zone of the ASTRC “Veduchi”. The average monthly and annual air temperature values at various altitudinal zones were obtained. The climatic parameters values were determined as linearly dependent on the height of the terrain.
Problems of organizing and conducting engineering surveys in construction
Authors: Sekisov A N
Published: December 2019

The authors studied and reviewed a brief history of regulatory documentation in the field of engineering surveys. The mechanism of quality control work is described. The problems in the organization of engineering surveys are identified. Suggestions to improve the system for providing engineering surveys with various types of resources are given.
Assessment of the Volga river state as a source of drinking water supply
Authors: Seleznev V A , Bespalova K V , Lukshin I A
Published: December 2019

The monitoring results of the Saratov reservoir water quality for the period 2000-2018 are presented. The observations were carried out monthly at a stationary point located in the downstream of the Zhiguli hydroelectric station. It is established that the water quality in the water supply source is characterized by a significant seasonal variability. During the period of algal nuisance, the reservoir organic pollution increases, and the concentration of nutrients decreases. Excessive content of organic substances in the summer low water period complicates the technological processes of water purification. Phosphates, whch concentration drops to almost zero at the peak of water «bloom” are the limiting indicator inhibiting the algal nuisance.
The personalized supply ventilation system design in the office space
Authors: Rymarov A G , Agafonova V V
Published: December 2019

The paper is devoted to the present-day problem - improving air quality in the office space working area. A design feature of such premises is small height (about 3 meters). This makes difficult to supply the required amount of air without creating drafts in the working area. It can be noted that such a problem solution is related with the new materials and technologies use in practice. These include textile terminals made of 100% polyester woven with carbon fiber. This material has the following properties: high strength and wear resistance, minimal particles entrainment from the surface. Unlike steel galvanized air ducts, in the textile air duct it is possible to laser-cut precise holes with melted edges with the necessary pitch and diameter. A diagram of the personalized ventilation organization in the office space is presented on the basis of the developed air-distributing device with a micro-perforated textile liner. This device allows to adjust the air flow depending on the individual needs of the person up to shutting down the system in the absence of an employee. Reducing the flow of fresh air contributes to the ventilation system energy efficiency.
Operational control methods of wastewater turbidity
Authors: Potolovsky R V , Sakharova A A , Gerashchenko A A , Khanova E L
Published: December 2019

The article identifies the optimal method of operational control of wastewater turbidity generated during the production of water-dispersion paint material.
Lightweight constructions in technical water supply systems of thermal and nuclear power plants
Authors: Bondarenko V L , Khetsuriani E D , Ilyasov A I , Semenova E A
Published: December 2019

Based on the analysis of constructive-technological, functional operation of technical water supply systems of thermal and nuclear power plants (TPP, NPP and CHP) it is determined, that using water flow rates up to 100 m3 / s and more for cooling, which are taken from the water bodies (reservoirs, large rivers) and dumping the same amount of water heated to 8-10 degrees back, causes a multifunctional change in the aquatic environment. In order to balance the anthropogenic load on the water body used as a reservoir - cooler, various design solutions are currently used in selecting the estimated water discharges and dumping the heated water into a water body. The reservoirs are made of traditional building materials that require large capital expenditures, and most important, they are ineffective in protecting alluvial stations from the indication of various species young fish and in the distribution of the heated water on the water surface of the cooler reservoir. Based on the results of innovative and constructive studies of lightweight water intake structures and jet distribution structures made of high-strength synthetic fabric materials of domestic production, the soft floating structures (SFSs) have been developed. They provide protection of pumping units from young fish with an efficiency up to 90% as well as the environmentally necessary management of the distribution of heated waters on the surface of the reservoir-cooler. The achieved research results have successfully passed the industrial approbation at the Konakovskaya and Stavropol regional power stations.
The scientific and technological standards adaptation principles to waste water existing treatment facilities
Authors: Vilson E V , Serpokrylov N S , Soloviev K O
Published: December 2019

The use of the scientific and technological documentation (STD) in the new facilities design and construction allows the modern technological and technical solutions use proven by operating practices that ensure the treated wastewater regulatory quality. However, the questions about the application of STD and modern construction materials at existing wastewater treatment plants, as well as being in commissioning mode remain.

Based on the physical survey materials of existing wastewater treatment plants using statistical models, it was shown that the infiltration and rain effect flows on the contaminants’ composition transported through the sewage collector is insignificant and should not be taken into account, and when choosing a re-technology scheme for treatment facilities polluted stream, i.e. concentrated wastewater.
Safety assessment of a dam made of ground materials
Authors: Orekhov V V , Alekseev G V
Published: December 2019

The Rogun HPP dam stability from ground materials is studied on the basis of numerical calculations of its spatial stress-strain state. The deformation and strength properties of materials composing the dam body defined in the triaxial compression devices were used in the calculations. Limit values of strength materials properties and controlled values of diagnostic indicators of a dam at which safety of its work is provided are established.
Finit element model of pipeline discretization by prismatic elements
Authors: Klochkov Yu V , Nikolaev A P , Vakhnina O.V. , Klochkov M.Yu.
Published: December 2019

Using the shells of triangular finite elements in calculations with a choice of nodal unknowns in the displacements form and their first derivatives, the continuity between the elements is provided only by displacements. Continuity in the derivative values is performed only at the nodal points and is absent at the boundaries between the elements. This circumstance often leads to a very slow convergence of the computational process. In this article, when using a prismatic finite element with a triangular base, improvement of the computational process by ensuring the equality condition of the derivatives normal displacements in the sides middle of adjacent triangular bases using uncertain Lagrange multipliers. Correctness and efficiency of the developed algorithm are shown in terms of the calculation.
The information technologies use at difficult technical objects condition control
Authors: Evtushenko S I , Krahmalny T A , Lepikhova V A , Kuchumov M A
Published: December 2019

The complex technical objects’ durability, operational reliability and safety depend on a complex set of factors. These factors impact result is the objects elements stress-strain state, formed at the construction stage and changed during the operation period under the growing damages influence, changed in the physical and mechanical materials properties, as well as the soil foundation condition.
The resources vertical aggregation model in the construction and installation works planning
Authors: Nehay R G , Molotkov G S , Grinev A P
Published: December 2019

The exchange of information between the global and local tasks occurs in the aggregated nomenclature, which reduces the bandwidth requirements of inter-layer communication channels. In the horizontal aggregation scheme, a global task is formed on the basis of non-aggregated information of local systems. The resources vertical aggregation model was obtained in the construction production planning, which differs by taking into account the restrictions on the number of teams used for the works functional dependencies.
Modal analysis of the cantilever type piezo-electric generator characteristics with active based on numerical simulation
Authors: Cherpakov A V , Kokareva Ya A
Published: December 2019

Finite element simulation of a piezo-electric generator (PEG) of a cantilever type with an active termination is considered. Finite element modeling was performed in the Ansys complex. The generator has a bimorphic arrangement of piezoelectric elements. A special feature of PEG is that the generator has two types of piezoelements: (1) elements located on the substrate in the form of a bimorph and (2) cylindrical piezoelements, which fix the cantilever plate. PEG can be used as a device for generating energy. A generator design oscillations modal analysis - was performed. For a given scheme of electrical connection of the PEG elements and various resistive loads, the results of the output voltage and power are given.
Mathematical model of pressure distribution in the main gas-transport system
Authors: Pirumyan N , Stakyan M
Published: December 2019

The issues of improving the methods for calculating pressures and material balance of the main gas-transport system based on the energy theory of gas flux-distribution are considered. The matrix method for determining the material balance equations for linearly independent and nonlinearly independent gas pipeline network contours was used as a mathematical model of the process to calculate the pressure distribution at the nodal points and gas flows. On the basis of the energy conservation law, a power balance equation for gas supply sources and its consumption distributed among the elements of the gas-transport network has been proposed. A mathematical model of the gas distribution process has been obtained.
Labor Safety in Construction
Authors: Rudchenko I , Bychkov A , Levchenko D
Published: December 2019

The safe work state in construction has been studied. In the process of research, the causes and production conditions, as well as the circumstances of the work safety in the construction industry have been investigated. On the basis of information obtained as a result of research and in-depth analysis, the tasks to reduce the industrial injuries have been set and solved.

The problem of reducing industrial injuries in construction in the measures set study has been determined. Here, along with organizational and technological measures, an important place is occupied by the workers individual and collective protection means.

A method for choosing means of reducing industrial injuries in construction, as methods for managing the “man-to-work environment” system has been developed, which minimizes the industrial injuries’ manifestations.

The developed method of choosing the reducing industrial injuries means in construction allows real-time adoption of a technically sound and cost-effective set of measures to protect the workers from the harmful and dangerous factors’ effects.
On atmosphere pollution of cities with linear configuration
Authors: Ivanova Yu P , Barikaeva N S , Markin V S , Derichenko A V
Published: December 2019

The article deals with the pollution of ambient air with dust and carbon monoxide along the Volgograd highways. Time history of carbon oxide concentrations depending on the distance from the roadway curb at the wind speed of 2 m/s and different wind directions to the road, as well as the time history in PM10 concentration during the day in the air of the urban environment are shown. The article highlights the negative impact of road transport on the health of the urban population; a scheme of monitoring stations in Volgograd is shown.
The machinery and aggregates fundamental improvements reserves
Authors: Zhuravlev G , Maximets S , Fateeva O
Published: December 2019

The machinery and aggregates characteristics fundamental improvements possibilities are shown by solving acute (which are not solved by traditional methods) problems of improving the power contact units, (gears) performance. The gears advanced import substitution examples are given.
Intermodal transportation using inland water transport in Russia and abroad
Authors: Miloslavskaya Svetlana , Panychev Alexander , Myskina Anna , Kurenkov Petr
Published: December 2019

Advantages of specific modes of transport can be best take by employing various technologies of combined transport. In the up-to-date logistic schemes based on the “just-in-time” and “just-in-sequence” concepts, it is most appropriate to use railway service and inland water connection as the most environmentally friendly and effective modes designed and built for medium- and long-distance freight transportation. The development strategy of the Russian Federation’s inland water transport for the period until 2030 is aimed at providing conditions under which to improve the sustainability of domestic transport system with due regard to shifting the balance between transport modes by switching some portion of cargo traffic from overland modes of transport to inland water transport. The article considers the essence of multimodal and intermodal transportation. It is note that multimodal transportation is most favorable for the environment. The main goods supplied through intermodal transport are list. The technology of intermodal transport using water compounds in the Russian Federation and Europe is considered. The role of the state in the development of intermodal transport is investigate.
State construction supervision during repurposing project implementation in the urban areas
Authors: Tokarskiy Andrey , Topchiy Dmitriy
Published: December 2019

The article discusses the mechanisms for optimizing the activities of state construction during the implementation of various investment and construction projects, including reprofilling, repurposing and reconstruction facilities. As a result, the authors provide a new dimension of quality system by several areas of criteria.
Introduction of road technical audit in Armenia as a criterion of quality improvement
Authors: Vardanyan Ye V , Harutyunyan V M , Harutyunyan A V
Published: December 2019

Methods of implementation of technical audit are introduced for the purpose of improving quality of construction and rehabilitation works of the RA lifeline roads within the framework of the World Bank’s International Bank for Reconstruction and Development (IBRD) loans and International Development Association’s loans and grants. The rendered services and deliverables submitted to the client have been analyzed. Suggestions are provided that could be expedient to be considered by the client during the organization of design, construction and technical audit tenders.
Private investment of infrastructure facilities in PPP projects and a mixed model of their return in the construction
Authors: Sidorenko E N , Lykova O A
Published: December 2019

The article examines ways of returning the private investment in the PPP projects implementation in health care, and it turns out the reasons for the mixed model prevalence combining the fee from the consumer and the fee for accessibility in the Russian healthcare sector. The measures for its improvement are proposed.
Innovative materials in construction and their role in improving the organizations efficiency
Authors: Yudenko M N , Chepachenko N V , Polovnikova N A , Nikolikhina S A
Published: December 2019

The article discusses the results of the innovative concrete types application in the buildings and structures construction. A classification of effects types according to the recommended features is proposed. The methodological approaches to the cost-benefit analysis methods substantiating at the stage of assessment and implementation of a construction project by the organization using innovative constructional materials are investigated and proposed. The methodical approach of determining the profitability of the production and sale of construction products has been expanded through the approach of evaluating efficiency based on the resource and optimization methods use.
Formation of the innovation potential of the region on the basis of the investment activity activization process in the construction industry
Authors: Lyulyuchenko M V , Demura N A
Published: December 2019

The team of authors made an attempt to study the main trends and problems in the formation of the innovative potential of the region based on the process of enhancing investment activity in the construction industry. The theoretical aspects of the innovation potential and investment activity in the construction industry within the region were analyzed and systematized in the article. The mechanism of the activating investment activity process influence in the construction industry on the formation of the innovative potential of the region and its development has been studied. The main opportunities for increasing the innovation potential by means of the investment activity intensification are identified.
Sustainability assessment for environmental construction projects, implemented in the arctic zone of the Russian Federation
Authors: Tsurkan M V , Artemiev A A
Published: December 2019

The relevance of this article is caused by the construction development in the Arctic zone of the Russian Federation. These construction works should be performed considering ecological safety. The objective of this article is to elaborate methods of evaluation for sustainability of ecological construction projects, implemented in the Arctic zone of the Russian Federation. This process should be based on systematization of data on the essence of the projects in question, taking into consideration ecological, economic and social aspects of the notion “sustainability”. The paper defines such notions as “sustainability of results of ecological construction projects” and “ecological construction projects sustainability” and distinguishes between them. The article suggests methods of evaluation for sustainability of ecological construction projects, considering the need for prolongation of positive impact, when these projects are over.
Cost-benefit analysis of the cast-in-place building framework vertical bearing structural members
Authors: Takhumova O V , Degtyareva O G
Published: December 2019

The article features three types of construction solutions on vertical bearing members of the researched building which are compared according to the architectural, constructive and technological peculiarities of their construction. As a result of the research, the most rational technical solutions on vertical bearing members of the facility in question were established taking into account cost-benefit indicators. The work is based on the statements of the finite-element method, the ultimate-load method as well as the construction management method and brick and cast-in-place multistoried building technology.
The main factors causing the outsourcing use in the construction organizations’ activities
Authors: Klochko E N , Britikova E A , Kovalenko L V
Published: December 2019

The current trend of optimizing business in construction in Russia indicates a growing orientation of construction organizations to foreign experience in the use of outsourcing, as a technology to transfer the certain types of activities or functions of their business along with responsibility for the result of the latter to outside specialized organizations. The article discusses the factors affecting the construction organization management system and causing the use of outsourcing in these organizations. The authors propose to group these factors into external ones in relation to the control system, as well as to the system of construction production and internal ones - factors reflecting the subject and object of management characteristics. Considering the outsourcing internal factors use in the field of building production management, the authors believe that it is necessary to take into account their close relationship with goals, objectives, various needs, functions, organizational structure, production technology, personnel policy of the building organization. The article identifies two directions for the outsourcing us, which affect the construction organization competitiveness growth, identifies goals and objectives that the construction organization solves in the process of using outsourcing.
Methods of increasing the construction organization efficiency in terms of using outsourcing
Authors: Klochko E N , Putilina I N , Britikova E A
Published: December 2019

The current trend in optimizing construction business in Russia indicates a growing orientation of construction organizations to foreign experience in the use of outsourcing as a technology to transfer to outside the specialized organizations some certain types of activities or functions of their business along with responsibility for the result of the latter. The article proposes a methodology for improving the construction organization efficiency in terms of the industrial outsourcing use. Within the methodology framework, indicators that can be used to identify the effectiveness of the outsourcing use in these organizations are indicated. The authors believe that to substantiate the using outsourcing expediency, functional modeling of the business processes under consideration is used. It was determined that the construction company can focus on two types of outsourcing - full and partial form, which is explained by their high degree of influence on the current economic activities of the construction company. The process of carrying out or implementing business process outsourcing in a construction organization as a part of developing an outsourcing project should include several stages, for each of which the options are offered by the construction organization’s management according to the scenario of using outsourcing or abandoning it.
Market power of green buildings in sustainable development goals
Authors: Medvedkina Y A , Khodochenko A V
Published: December 2019

This article is dedicated to the development of the green building sector falling under the Sustainable Development Goals (SDGs). The paper illustrates major trends of green economy development and provides indicators for projects assessment in terms of green building. As the international practice shows, the implementation of modern environmental and energy projects and the introduction of special property of material are now becoming a strategic task in the construction sector. International companies are actively introducing technologies and new materials to reduce energy consumption in industrial buildings and offices. This study contains the analysis of green projects implemented in practice nowadays.
Enhanced technology of quantitative assessment for technological suitability of real estate for technical improvements
Authors: Schenyatskaya M A , Krutilova M O , Sharapova A V , Markova A A
Published: December 2019

The key problems of organizing a rational investment in technical improvements (repair and reconstruction) of buildings and structures, as a way to improve the real estate functional efficiency are the quantitative ranking problems of objects to be improved according to the actual resource needs of work, the resulting economic assessment and reconstruction social effect, technical feasibility integrated assessment and work conditions. Particularly up to date is the question of quantifying the conditions for making improvements when implementing investment programs financed by budgetary funds, under which, as a rule, complex territorial improvement is carried out, or targeted programs are being implemented to improve the municipal real estate for functional purposes. To contribute to the effective solution of these problems and to be an effective tool for the established practice of managing urban real estate background, the methodological approaches presented in the work and the algorithms for constructing a quantitative assessment of the technological suitability of real estate for functional improvement are presented. The paper demonstrated the proposed methodologies practical use examples, evaluating the potential effectiveness of the property manager’s activities, proposed tools for the practical implementation of the techniques in industry software.
Modeling the formation of acoustic resonant waves in a closed space
Authors: Pershin I , Sidyakin P , Belaya E , Shchitov D
Published: December 2019

An analysis is made and a method for calculating resonant acoustic waves, which allows determining the effect of sound pressure at any point in a room with different finishes for enclosing structures, is developed. The method allows taking into account the type of finishing material for vertical and horizontal structures.
Application of theoretical studies for a description of the process of dust subsidence of chrysotile-asbestos dust and cement dust
Authors: Azarov V N , Burkhanova R A , Kovtunov I A , Vinshu M S
Published: December 2019

The authors have sampled dust samples in the modelling shop of the enterprise, that produced asbestos cement products, performed the dispersal analysis of chrysotile asbestos dust and cement dust, built areas of integral curves particle mass distribution by diameters for aspiration systems, general exhaust ventilation and sanitary protection zone. For description of dispersal composition of dust were used two-link splines in log-probabilistic coordinate system. Carried out a mathematical evaluation of these functions as random. The method of "dissection" is used for their description.
Density functional theory study on electrical properties of graphyne propane under tension and compression deformation
Authors: Wei Lin , Liu Guili , Zhang Guoying
Published: December 2019

Based on the first-principles of density functional theory, this paper systematically studied the effect of tensile and compression deformation on the electrical properties of graphyne. The study show that the graphyne has an direct and adjustable band gap under deformation. Under uniaxial deformation, the band gap tend to be in the decline with the increase of the deformation, but under biaxial deformation, the band gap is positively correlated with the deformation, which increases with the rising of the tension deformation, and decreases with the increase of the compression deformation. The band gap value calculated by the HSE06 method is larger than what is obtained by the GGA method, but the shape characteristics of the band structure obtained by the two are basically the same, as well as the same trend between band gap and strain. With the tensile and compressive deformations increase, the charge transfer between C atoms in the graphyne is intensified. Compressive deformation makes the graphyne system more stable, while tensile deformation reduces the stability of graphyne. Compared with uniaxial, biaxial deformation has a more severe effect on the stability and band gap of the graphyne system, but less on charge transfer.
The effect of Tb doping on the magnetic properties and microstructure of a TbNdFeCoB/Fe7Co3 nanocomposite permanent magnet
Authors: Ding Hewei , Cui Chunxiang , Yang Wei , Sun Jibing
Published: December 2019

Melt-spun NdFeB-type nanocomposite magnetic materials are important in a number of applications, including electromagnetic sensors, magnetic resonance imaging, and voice coil motors. Herein we investigated the magnetic properties and microstructures of melt-spun Tb
x
Nd10−x
Fe80Co4B6/Fe7Co3 (x = 0.1, 0.2, and 0.3) ribbons by means of x-ray diffractometry, scanning electron microscopy, and magnetization experiments. Tb doping resulted in the formation of a 2:14:1 phase with a higher anisotropy field, which suppressed the separation of Fe7Co3 branch crystals and improved the magnetic properties of the material. Optimum magnetic properties that include a remanence (J

r
) of 0.62 T, a coercivity (H

ci
) of 612.0 kA m−1, and a maximum magnetic energy product ((BH)max) of 94.9 kJ m−3 were obtained for the annealed Tb0.3Nd9.7Fe80Co4B6/Fe7Co3 ribbon. Furthermore, the effective anisotropy constant,

K

e
f
f

,

and the saturation magnetization,

M
s
,

in the nanocomposite were determined by the LATS (law of approach to saturation) method. In this study, the values of

K

e
f
f

and

M
s

were found to lie between those of hard and soft magnetic phases, consistent with the exchange-coupling concept.
Magnetic susceptibility measurement and heavy metal pollution at an automobile station in Ilorin, North-Central Nigeria
Authors: Orosun Muyiwa Michael , Oniku Sunday Adetola , Peter Adie , Orosun Rapheal Olugbenga , Salawu Naheem Banji , Hitler Louis
Published: December 2019

Magnetic susceptibility measurement was carried out on 26 top-soil samples randomly collected from the study area and 5 selected top-soil samples outside the station, using the Bartington MS meter linked to a computer operated using Multisus2 software. The Measurements was done at both low (0.47 kHz) and high (4.7 kHz) frequency susceptibilities which was further used to calculate the frequency dependent susceptibility (ΧFD). The values for low frequency mass magnetic susceptibility ranges between 96.6 × 10−5 m3 kg−1 and 146 × 10−5 m3 kg−1 with an average value of 117.35 × 10−5 m3 kg−1 and standard deviation of 12.22 × 10−5 m3 kg−1. The result reveal high magnetic susceptibility values at the station compared with the values observed outside the station which ranges between 53.0 × 10−5 m3 kg−1 and 72.3 × 10−5 m3 kg−1 with an average value of 63.2 × 10−5 m3 kg−1 and standard deviation of 7.01 × 10−5 m3 kg−1. This significant magnetic enhancement indicates high concentration of ferrimagnetic minerals in the soil and thus evidence of pollution due to the activities at the station which implies that the magnetic enhancement is of anthropogenic source than pedogenic and lithogenic. Analysis of the heavy metals also reveals higher values at the station. The correlation analysis between the mass specific magnetic susceptibility and the heavy metals concentrations (i.e. Cu (R = 0.92), Fe (R = 0.88), Cr (R = 0.85), Zn (R = 0.83), Cd (R = 0.79), Mg (R = 0.72), Mn (R = 0.60), Pb (R = 0.67)) which was conducted to further investigate the relationship between the soil magnetic susceptibility values and elemental variations, demonstrated magnetic susceptibility can be used as a proxy method for assessing the pollution of these heavy metals.
Vandermondes in superspace
Authors: Rhoades Brendon , Wilson Andrew
Published: December 2019

Superspace of rank

n
n

is a

Q

\mathbb {Q}

-algebra with

n
n

commuting generators

x
1

,
…
,

x
n

x_1, \dots , x_n

and

n
n

anticommuting generators

θ
1

,
…
,

θ
n

\theta _1, \dots , \theta _n

. We present an extension of the Vandermonde determinant to superspace which depends on a sequence

a

=
(

a
1

,
…
,

a
r

)

\mathbf {a} = (a_1, \dots , a_r)

of nonnegative integers of length

r
≤
n

r \leq n

. We use superspace Vandermondes to construct graded representations of the symmetric group. This construction recovers hook-shaped Tanisaki quotients, the coinvariant ring for the Delta Conjecture constructed by Haglund, Rhoades, and Shimozono, and a superspace quotient related to positroids and Chern plethysm constructed by Billey, Rhoades, and Tewari. We define a notion of partial differentiation with respect to anticommuting variables to construct doubly graded modules from superspace Vandermondes. These doubly graded modules carry a natural ring structure which satisfies a 2-dimensional version of Poincaré duality. The application of polarization operators gives rise to other bigraded modules which give a conjectural module for the symmetric function

Δ

e

k
−
1

′

e
n

\Delta ’_{e_{k-1}} e_n

appearing in the Delta Conjecture of Haglund, Remmel, and Wilson.