bluuebunny/crossref_metadata_2025_split huggingface dataset:
On the availability of information exchange in radio notification transmission systems
Authors: Telny A V 
Published: March 2021

Abstract
This article presents the results of studies on assessing the availability of information exchange in radio transmission notifications system (RTNS) of various types. The author proposes to use indicators showing the probability of non-reception of alarm notifications at the scheduled time, the daily average probability of non-reception of data from RTNS, and the average daily occupancy of the RTNS radio channel as parameters for assessing the availability. The article introduces the expansion of the existing assessments of the information exchange availability not only in terms of test messages passing the radio channel control, but also taking into account possible internal time collisions associated with the transmission of service and alarm notifications to RTNS. The author proposes to expand the assessments of availability indicators not only for asynchronous RTNS, but also for combined asynchronous-synchronous systems with working frequency occupancy control, satisfying the conditions stating that the time window for the transmission of alarm and service notifications does not intersect with the time window of test messages for the radio channel control. The calculations show that the obtained estimates of availability are consistent with the established practice of RTNS operation.
Detection of network anomalies in log files using machine learning methods
Authors: Skazin V A , Pavlychev A V , Zotov S S 
Published: March 2021

Abstract
Detection of network anomalies plays an important role in ensuring information security and countering unauthorized access to information infrastructure, including critical facilities. Detecting of abnormal events in log files is complicated by the fact that individual events without any context may be uninformative. The growing importance of log file analysis in large computer systems requires the development of automated methods for processing unstructured data that retrieves information from large log files without human intervention. This article discusses K-means data clustering method and Isolation forest and OSVM machine learning algorithms in terms of searching network anomalies in network log files in order to detect malicious domains.
Comparison of recognition using Google and Kaldi to solve the problem of assessing intelligibility
Authors: Kostyuchenko E Y , Balatskaya L N , Kharchenko S S , Lapina M A 
Published: March 2021

AbstractThe paper is devoted to improving the functionality of the speech intelligibility assessment solution. A previously implemented approach based on the Google Cloud Speech-to-Text solution has shown controversial quality indicators due to its attachment to the global news context. The paper proposes and evaluates the use of the Kaldi system for recognition. This solution not only made it possible to assess the quality of speech without using the Internet, but also to improve the quality of recognition in isolated phrases by excluding the global news context.
Basis of Architectural and Urban Planning Formation of Scientific and Educational Complexes
Authors: Puchkov M 
Published: March 2021

Abstract
A modern university becomes a place for the formation of human intellect in all its diversity: in the form of knowledge, innovations, competencies, and at the same time remains a special territory: a space for meeting and joint work of researchers, professors and students. Such task creates additional special requirements for the qualities of the architectural space of university complexes. This article discusses the architectural and urban principles of creating new facilities and complexes for educational, scientific and technological needs. We analyzed effective centers from the town-planning scale up to the level of local architectural objects. The main goal is to develop the theoretical foundations for the architectural design of scientific, educational and research facilities that correspond to modern educational and scientific technologies in the context of innovative economy.
Process and Energy Parameters of Horizontal Centrifugal Mill for Grinding Soybeans
Authors: Khudoyan M V , Mishenina I V , Barvinyuk N G 
Published: March 2021

Abstract
The paper represents the results of experimental studying the process and energy parameters of a new design of a horizontal centrifugal mill for grinding cereals. The most difficult grain to make flour is soybeans since this product is very viscous and moisty and contains a high percentage of oil. The characteristics of a new horizontal centrifugal mill are given. The most essential soy flour and semolina property determining their industrial use is functionality, i.e. the ability to form stable water-in-oil emulsions. The high emulsifying properties of soy flour allow not only improving the organoleptic properties and increasing the nutritional value and bioavailability but also reducing the product loss during thermal treatment. Along with functionality, the neutral taste and smell of soy flour make it comparable in application effect (competitiveness) with functional soy concentrates and isolates.
Numerical and Analytical Study of the Distribution of Concentrated Pressure in the Wall of a Steel I-beam
Authors: Kuznetsov D N , Ponyavina N A , Belyaeva S Yu 
Published: March 2021

Abstract
The theory of the strength of load-bearing structural elements made of steel I-beams suggests that the nature of the stress distribution in the element is known, including from the action of concentrated pressure. A concentrated load is often applied at the level of the upper girdle of the beams, and causes local stresses in the wall. The walls of steel I-beams, due to their insignificant thickness, are sensitive to local pressure. That is why it is necessary to accurately determine the most stressed sections of the wall and the intensity of local stresses. In this paper, we consider a test model of a steel I-beam with a span of 9 m, to the upper girdle of which a concentrated load of 200 kN is applied. The local stresses in the wall are determined by analytical and numerical methods. The numerical calculation of the beam model was performed in the SCAD Office computing complex. The beam is modeled from volumetric isoparametric finite elements. The length of the beam wall is divided by two-sided stiffeners into nine compartments, with a step of 1000 mm. A comparative analysis of the nature of the distribution of local stresses in the wall of a steel beam obtained by analytical and numerical calculations is presented. Recommendations are given on taking into account local stresses in the beam wall from the action of a concentrated load when calculating strength.
Combinatorial Method of Computer-Assisted Multiversion Design of Construction Operations
Authors: Nikolaev Yu N 
Published: March 2021

Abstract
A combinatorial approach to the automated design of construction processes on the variant basis is reviewed in this article. The essence of the approach is in the automated formation of a complete set of all feasible planning and technical solutions for construction works at each design stage based on the capabilities of the construction and installation contractor, working conditions, the characteristics of the construction facility, followed by selection of the best solution according to specified criteria. Choosing of the best option for the construction process implementation occurs after the completion of the full range of formation of technological and planning solutions for each of the alternatives allowing full use of system approach in designing of the construction operations. A combinatorial approach based on the analysis procedures (in fact, building a decision tree for certain stages of design) and synthesis (finding all possible combinations of complex construction production based on the selection of options for the construction of its individual subsystems and elements) is used as a methodological basis for generating alternatives. The choice of the best option of a complex of planning and technical solutions for the implementation of the construction process is carried out at the final stage, which allows to implement the system technical approach to the design of construction systems to the greatest extent [1], since each alternative solution of each stage of the design of the construction production is estimated in terms of its impact on all the fundamental parameters of the system – the duration of the construction process and indicators of uniformity of resource usage within the schedule, the cost of the construction of the object, the parameters of the site organization within the construction master plan, the intensity of the process, etc.
Methods to Ensure Cluster Development of Rostov Region Territory in terms of Agricultural Sector
Authors: Sheina S , Fedorovskaya A 
Published: March 2021

Abstract
The main objective of cluster policy implementation is to ensure high rates of economic growth and diversification of the regional economy by increasing the competitiveness of enterprises, suppliers of equipment, components, specialized production and services, research and educational organizations that form territorial clusters. The cluster approach has taken one of the key positions in the social and economic strategies in several regions and municipalities in the Russian Federation, as evidenced by the draft “Concept of Cluster Policy in the Russian Federation” developed by the Russian Federation Ministry of Economic Development. This article covers the methodology that allows to successfully implement the territorial cluster division and ensure the calculation of cluster specialization on the level of the subject of the Russian Federation, namely Rostov Region.
Increase of Impact Strength and Frost Resistance of Concrete Hydrotechnical Piles at Deaeration of Concrete Mixture with Air-Entraining Admixtures
Authors: Goncharov A 
Published: March 2021

Abstract
In the article the main technological factors of influence on frost resistance of concrete are given. It is proved, that the reduction of air content in concrete mixture with air-entraining admixtures during continuous vibration does not lead to a decrease in frost resistance of concrete with an increase in its strength. The completed researchers have shown that when the concrete mixture is deaerated, the number of micro-destructions under the impact effects on concrete is significantly reduced. The obtained data allowed to offer a method of manufacture of piles, submerged by impact effects, for severe climatic conditions. The main parameters that must be provided during the production of piles and their clogging for increased durability are indicated. Deaeration of concrete mixture with air-entraining additives and initial air content does not lead to decrease of subsequent frost resistance of concrete. The creation in concrete mixture of initial excess air content increases mobility of concrete mixture, and subsequent deaeration allows getting concrete of especially high frost resistance with increase of its tensile strength. Deaerated concrete allows to increase the level of multiple impact tensions without further reduction of durability. This method of obtaining high-frost-resistant concrete of increased impact tensile strength is expedient to use in manufacturing piles for sea hydraulic installations. The tensile strength of concrete piles (after deaeration) should be not less than 50 MPa.
Modern Approaches in the Typology of Nursing Homes
Authors: Zhdanova I V , Kayasova D S , Kuznetsova A A 
Published: March 2021

AbstractThe aim of this work is to explore modern approaches in the typology of nursing homes. World data are provided on the increase in the share of older persons in the total population. As well as the Rosstat data confirming the relevance of studying this topic. Examples of foreign experience in designing and building houses for older persons show a developed functional composition of premises along with the function of accommodation and care - medical care, leisure, trade, sports, nutrition and multifunctional spaces to ensure social interaction of different groups of the population. The study identified a method of “functional improvement” aimed at developing optimal functional interactions between public and residential spaces. A conceptual design has been developed according to the “dynamic” scheme, showing the inclusion of residential blocks in the multifunctional complex. It is determined that in Russia it is necessary to introduce modern approaches adapted to Russian conditions, based on foreign experience. This will increase the consumer qualities of the facility and the level of comfort of living for older people, which is undoubtedly important, will ensure social interaction through the introduction of educational and leisure functions, as well as improve the environmental and aesthetic qualities of the environment.
The Architecture of Harbin’s First Banking Institutions. Fujiadian District
Authors: Bazilevich M E , Kim A A 
Published: March 2021

Abstract
The article is devoted to the architecture of the first banking institutions of one of the largest historic districts of Harbin: Fujiadian (now Daowai). A brief historical overview of the history of formation and development of the district is given. The buildings of banking institutions that have been preserved on its territory have been identified. As a result, the main directions of development of this layer of Harbin architecture, associated with the spread of “Chinese Baroque” and strict Neoclassicism in the architecture of the city, were determined. The architectural features of particular bank buildings are considered and their importance in the formation of the historical and architectural environment of Harbin is shown.
Experimental Studies of Strength Inclined Sections Bent Elements from Autoclaved Aerated Concrete
Authors: Mohammed Alhashimi Omar Ismael 
Published: March 2021

Abstract
The tasks of the experimental study included determining the design characteristics of autoclave aerated concrete (AAC) beams with a density of 600 kg / cm3, strength 4 MPa. namely, the width of the crack opening of the bending elements, checking the updated methodology for the effect of shear span to depth ratio [a/h], obtaining new data on the work of bending elements when the load approaches maximum, as well as in the stage of the beyond state, the distribution of deflections along the length of the elements, the distribution relative to the strain of the compression zone, tension zone and deformation of the joint zone of the transverse force and the bending moment and obtained experimental data on the bearing capacity and deformability of the beams for various values of span shear. The measured test data provide a basis for evaluating the accuracy of existing strength-design equations to predict the capacity of such specimens. The study in this paper can provide a reliable experimental basis for further analysis and engineering application of AAC beams in the future.
Modern Materials and Wooden Housing Construction Technologies
Authors: Ushakov A U , Zhukov A D , Zinkevich E S , Bessonov I V 
Published: March 2021

Abstract
Wood-based products application systems are directly harmonized with its properties. Currently, frame construction of cottages, residential and economic objects is becoming more and more developed. In such systems, an important factor of their effective operation is high-strength and wear-proof wooden elements usage, high-quality insulation and its installation methods.
The article considers modern methods of solid wood technological processing to give it new physical, mechanical, exploitation and aesthetic properties. The main stages of processing, technological and ecological requirements related to the process of wood processing are described. The basic advantages, disadvantages and application of modified wood, Thermally modified wood and nanowood are formulated.
Research findings of seamless welded shells based on polyethylene foam used for heat - hydro - vapor insulation of buildings with wooden frame systems are presented.
It is established that the tensile strength in the longitudinal direction of the material is 80-92 kPa, and 29-32 kPa for the weld. The moisture content of wooden structures is 7.7–7.8 percent. Rotten manifestations were not found on the wooden frame, which confirms the feasibility of using these insulation systems for the construction of wooden frame buildings.
Classification of Shell Constructions with Infill
Authors: Tsimbelman N Ya , Malkov N M , Chernova T I , Selivanova M A 
Published: March 2021

Abstract
Filled shell structures are used for various engineering tasks in hydraulic engineering. Made of various materials, the shells retain the inner filler as a conserved medium or as a structural material that ensures the performance of the entire construction. The article provides a classification of constructions made of shell structures. A system of constructive solutions for filled shells is proposed, in which the material and method of forming the shell, the method of supporting the shell on the soil, the configuration of the transverse and longitudinal sections of the shell, as well as the presence of additional structural structures are adopted.
Using Georadars for Evaluating the Thickness of a Concrete Layer
Authors: Sambulov N I , Khakhulin N B , Netrebina Yu S 
Published: March 2021

Abstract
At present, georadiolocating research is actively used in various fields of engineering surveys. In the article, we discuss the scan for concrete structures and assess their thickness and condition using this method. The principle of operation of radar is based on the emission of electromagnetic pulses of the radio range and the reception of a signal reflected from the interface of the media (the boundary between the layers of the studied soil stratum having sharply different electrophysical properties). The aim of the study is to accurately determine the location and layout of the reinforcing bar, tension cables, beams, pipelines, voids, and plates. The presence of metallic objects in the studied strata is a valuable identification feature, and metal objects known to be located are convenient marking elements of the section.
Details of Inspection of Static Ropes with Polyester Sheath after Contact with Various Acids
Authors: Zherdev K V , Pham N T , Prostakishin D A 
Published: March 2021

Abstract
This article considers static ropes - one of the components of a personal fall protection system when working at heights. The issue of accidents when working at heights in Russia and abroad is raised. The inspection of the ropes is considered as one of the local mechanisms to reduce injuries when performing work at heights, as well as the advanced training of specialists responsible for the inspection of personal protective equipment against falling from a height. The effect of acid solutions most commonly encountered in industrial activities with short-term contact and with prolonged contact on polyamide ropes is investigated. Recommendations are given for a more competent use of these products in various situations without compromising safety. The questions of solving the problem of the hidden effect of acids on static ropes with a polyester sheath are raised.
Wood as a Material of Traditional Manor Building: Problems of Restoration, Conservation and Reconstruction
Authors: Pryadko I , Lebedev I 
Published: March 2021

Abstract
In the article, the co-authors analyze the reconstruction and restoration of pieces of wooden architecture, primarily, manors and parks of the 18th and 19th centuries, located in the south-west of the Russian capital. The co-authors are convinced that the application of timber as the construction and finishing material is the key feature of these wooden monuments, or former mansions of the Russian feudal nobility; park pavilions, country houses owned by famous businessmen and artists in the days of the industrial revolution, in the late 19th – early 20th century. Wood is the source of numerous problems that accompany preservation, and in some cases, reconstruction and restoration of these construction facilities. Problems consist in the choice of materials used to reproduce missing fragments of buildings and the assessment of authenticity of a facility or its elements in case of its complete or partial destruction. The co-authors employed such methods, as the analysis of architectural history sources and comparative historical research. The co-authors offer expert reviews made by contemporary Russian restorers and civil activists, willing to have architectural monuments preserved and manors and parks restored. The project is theoretically and practically relevant, as it generalizes information on pieces of wooden architecture and their restoration in the Russian Federation.
Spatial Planning Techniques for Forming the Urban Environment in the Friendly City Concept
Authors: Zakirova Y , Bilalova I 
Published: March 2021

Abstract
The article focuses on formation of comfortable urban spaces and citizen friendly cities in Russia. The experience of Europe and the USA in the area of concept “Friendly cities” was examined. As a key focus of urban transforming in Russian cities and towns is proposed to create the system “Safe route to school”. The technique of execution of the project is suggested. The project “Safe School Route” has been tested on the example of Kazan city. It has conducted sociological study and developed proposal for the reorganization of urban areas adjacent to school grounds.
Main Principles of Comprehensive Approach to Formation of Comfortable Urban Environment
Authors: Yaskova N Yu , Sarchenko V I , Khirevich S A 
Published: March 2021

Abstract
Under increasing competition for high-quality human resources crucial for contemporary civilization development, the requirements for the quality and comfort of living spaces undergo drastic changes. The purpose of this article is to give some ideas about the comprehensive approach principles for the formation of a viable urban environment. Based on the sustainable development theory, economic theory, as well as project and structural approaches, the authors propose a system of principles for the formation of a viable urban environment. Their novelty is in the consideration of the cyclic dynamics of urban development processes in management, facilities, and resources; the comprehensive use of the structural approach; the focus on the achievement of long-term benefits from the results of the transformation of the urban environment, etc. The use of the suggested comprehensive principles will help support a significant acceleration of urban development processes.
Use of “Lean” Concrete Mixes for Road Construction in the Arctic Regions
Authors: Burenina O N , Andreeva A V , Savvinova M E , Davaasenge S S 
Published: March 2021

Abstract
The article presents experimental data on the study of the physical-mechanical properties of modified “lean” concrete. Magnesium nanospinel with mechanically activated cement and sand were used as modifiers. The prospect of modifying “lean” concrete by introducing mechanically activated parts of cement binder and fine aggregate has been established. Optimal formulations and technological conditions for manufacturing modified “lean” concrete were developed for the construction of the pavement base course in the Arctic regions.