bluuebunny/crossref_metadata_2025_split huggingface dataset:
Organizing Industrial Construction of Nuclear Power Facilities in the Global Nuclear Power Markets taking into account Reliability Simulations from Pre-Investment Stages
Authors: Baronin S , Berezka V 
Published: February 2022

Abstract
This article considers the problem of ensuring the growth of export capacities of the industrial construction of nuclear power facilities in the global markets through the simulation and management of the organizational reliability during the pre-investment stage. This research is made relevant by a high level of uncertainty in the implementation of international investment projects for nuclear power when over 60% of the world’s nuclear reactors are constructed with delays and at increasing costs. The purpose of this research is to develop methodological approaches and practical recommendations on the modeling and complex management of organizational reliability indicators for the industrial construction of nuclear power facilities in the global markets during the pre-investment stages. This article presents the following results: the simulation procedure for the organizational reliability and life cycles of the industrial construction of nuclear power facilities developed by the authors, development specifics and trends for this type of industrial construction, recommendations concerning the organization of industrial construction to improve the reliability of nuclear power facility construction based on a managed factor space and multi-criterion optimization of calendar schedules. The conceptual approach to modeling and management of the organizational reliability of nuclear power industrial construction and operation life cycles in question can be determined as a promising market tool that can be used to regulate the increase of the competitive abilities of the Russian branches of Rosatom State Corporation. This stipulates facilitating the growth of the industrial construction of nuclear power facilities in the global market from the current share of Rosatom State Corporation of 26% (120 billion USD) to 40-50% before 2035 through the improvement of the organizational reliability of the implementation of this type of investment projects.
Method for Reducing Total Iron Concentration in Rivers of Leningrad Region Using Bank Protection by Gabion with a Special Filler
Authors: Sakharova A , Spryzhkova U , Abu-Khasan M 
Published: February 2022

Abstract
The authors of the article studied the rivers and lakes of the Leningrad region of the North-West region of the Russian Federation for the total iron content and analyzed the results obtained. This chemical indicator is being investigated due to the fact that it can have an adverse effect on the environment and human health. The main goal of the work was to analyze the most polluted water bodies of the Leningrad region in terms of excess of the maximum permissible concentration (MPC) for total iron and to develop a way to reduce its concentration. A colorimetric analysis method was used to obtain the data. Exceeding the maximum permissible concentration for total iron was found in more than 80% of samples. A detailed analysis of the three most polluted water bodies was carried out. The results obtained showed that the water bodies of the Leningrad region are heavily contaminated with common iron. In this regard, it is required to develop special measures to reduce its concentration. The authors suggest the use of gabion structure with a special filler for bank stabilization and reduction of the concentration of total iron to the most polluted rivers of the Leningrad region.
Studying Seismic Stability of Buildings Constructed Using Lift-Slab Method and Equipped with Rubber-Steel Seismic Isolators
Authors: Muradyan G K , Noskov A S 
Published: February 2022

Abstract
As the construction industry develops, unique unconventional methods of improving the seismic stability of buildings are used. One of these methods is the seismic isolation of buildings using special isolating supports. Rubber steel supports with high damping ability can improve the seismic stability of the building by 1.5 times on average. Since the seismic stability of the buildings constructed using the lift-slab method was set at up to 7 points, we expect to increase it to 8-9 points through the installation of the rubber steel supports in these buildings. The implementation of the current seismic resistance improvement methods for the existing buildings and structures shall help achieve the following: improve the preparation of the authorities and residents to major earthquakes; significantly reduce seismic risks and the consequences of both major earthquakes and industrial disasters caused by earthquakes; provide the economic and social stability of the country in case of emergencies.
On the Necessity and Possibility of Introducing Self-Driving Systems in an Urban Environment
Authors: Burmich A K , Vlasova M F , Stepanova N R 
Published: February 2022

AbstractThis article analyses the possibility of using self-driving systems in the field of public transport. In this study, the type of public transport considered is the tram. Today, self-driving innovative technologies are becoming publicly available. It is shown that in the field of modernization of the artificial intelligence of the tram, maximum practical experience is needed to improve its adaptation to various external situations. The study suggests the practical application of self-driving systems in a city with a population of 1.5 million people. This city is Yekaterinburg, Russia. The best world experience in the field of automation of public transport processes is considered. The article also provides an algorithm for the introduction of self-driving systems into the urban environment. The advantages and disadvantages of the existing and modernized tram fleet are shown on the example of the city of Yekaterinburg. SWOT analysis was used as a tool for assessing the need and possibility of introducing a tram.
Monitoring Concrete Road Pavement Damages
Authors: Sazonova S A , Nikolenko S D , Akamsina N V 
Published: February 2022

AbstractThe paper considers the main processes that affect the quality of concrete road surfaces. The quality of concrete pavement depends on the quality of the preparation of the base, the concrete components quality, and the quality of the coating technology. The processes of concrete components quality control, the process of its manufacture, as well as the control of road surfaces that have fully gained strength and are ready for use are studied. Examples of the defects formation on concrete surfaces are given. The factors influencing the occurrence of deformations in road surfaces are considered. In fact, concrete is a mixture of a binder, coarse and fine aggregate, various additives and water. The process of its production is a set of mandatory measures, without which it will not be possible to obtain high-quality durable material. The measures that exclude the defects formation on concrete road surfaces are proposed. The purpose of the paper is to analyze the processes of concrete road surfaces construction with the identification of the main measures to improve their quality.
Geochemical Characteristics of Igneous Rocks of the Nizhnetaezhny Ore District (North Primorye)
Authors: Medvedev E I , Ivin V V 
Published: February 2022

Abstract
The article discusses the features of the geological structure and composition of the magmatic rocks of the Nizhnetaezhny ore district (North Primorye). It ncludes the East Sikhote-Aligna Volcano-plutonic belt (ESAVPB) and is located in the transition zone Continent Ocean. ESAVPB is the typomorphic link of the East Asian Occinno-Continental Volcanogenic, reconstructed by A. I. Khanchuk as an oversumbays. Other links are known as the Okhotsko-Chukchi, Busan and Southeast Chinese belts. To determine the age of the magmatic arrays, the NTOD selected from the two most representative intrusive bodies of the node of the Malinovsky and Berezovsky massives, between them the main mass of ore mineralization is located. The determination of the ages of the K-Ar method is shown that quartz diorites were formed in Paleocene (64 ± 1 million years), and biotite porphyrene granites in Eocene (47 ± 2 million years). It was previously assumed that the Malinovsky massive is a typical representative of Primorsky, and Berezovsky and the Zavodskoy - Samarka or Bogopolskaya volcanic Plutonic Comlex. Considering that some definitions show (62 ± 1 million years) and characterize porphyry dacites in the Exocontact attacked of the Berezovsky massive, and in the bottom of the incision of the bogopolskaya suites, the lumpy tuffs of rhyolitic and touff-conglomerates contain retalized and half-rolled fragments of the myarol granites common in the Primorsky complex, we can conclude About accessories Malinovsky and Berezovsky massive to the Samarkinskiy complex. In favor of such a conclusion, the determination of the age of monzodiorite (64 ± 1 million years) and pyroxene diorites (57 ± 2 million years) of the Malinovsky massive, which are consistent with the refined rates of the age of the Samargna suite, are appropriate.
Features of the Designing of Infectious Diseases Hospitals in a Pandemic
Authors: Plyashkevich A I , Melnikova I B 
Published: February 2022

Abstract
The article describes hospital design in a period of pandemic. In the situation of a rapidly spreading epidemic of coronavirus infection, the Ministry of Health of the Russian Federation has faced a lacking of isolation hospitals in more than a dozen regions of Russia. There were taken various methods of setting up health care institutions for infectious patients during the year, in order to conquer the infection spread. Three of those came out to be the most effective. The first method is adaptation of the existing public buildings for health care needs. Another method is building pre-fabricated field hospitals. The third one is repurposing existing hospitals to infectious ones. This article investigates these basic approaches of creating hospitals in a period of pandemic and giving analysis to the main planning principles for infectious types of heath care institutions.
Influence of the Multilayer Nature of Reinforcement of Open Thin-Walled Cylindrical Carbon Shells on Their Natural Vibrations
Authors: Sysoev E O , Dobryshkin A Yu , Volik E O , Pushkareva O E 
Published: February 2022

Abstract
In the near future, mega-long-span structures will be required for creating stable microclimate over large areas, regardless of the natural conditions, for comfortable living of people. Thin-walled shell structures made of carbon materials with high strength properties are best suited for this purpose. The problem with thin-walled shells resides in vibrations caused by the action of external forces, which can lead to structural failure. The paper presents and experimental study of influence of the multilayer nature of reinforcement of open thin-walled cylindrical carbon shells on their natural vibrations. Experimental data have been compared to the theoretical calculations of open thin-walled cylindrical shell vibrations taking into account the frequency spectrum splitting. It has been found that with the increase in the number of carbon fabric reinforcement layers, vibration frequency deviation in open thin-walled cylindrical carbon shells increases at the initial stage as compared to the analytic model.
Investigation of Ice Specimens Reinforced in the Middle Section with Thin-Walled Pipes Made of Polymeric Materials
Authors: Vasilyev A S , Zemlyak V L , Kozin V M 
Published: February 2022

Abstract
The paper is devoted to the construction of road crossings on the territory of the Arctic shelf and the Extreme North (Far North), as well as on the Siberian and Far Eastern rivers in winter. That is going to contribute to reducing logistic costs from cargo shipping down the ice surface significantly. In this research, the authors examine ice-based composites, where thin-walled polyvinyl chloride pipes are placed in the middle of the sample cross-section as a reinforcer. Two types of pipes were tested: vent white and orange sewer (drain) ones. While doing several series of model experiments, the researchers find out that the load-bearing capacity of ice samples reinforced with these pipes show very much the same results. So it was decided to combine the averaged model experiments with these pipes into one concluding result. The mechanical characteristics of ice were figured out by crushing samples of ice prisms that are 60 cm long, with a cross-section size of 15x15 cm. The aim of the paper is to define the influence of thin-walled polyvinylchloride pipes on the plastic properties and load-bearing capacity of ice samples when they are being reinforced. The test results prove that when reinforced with a pipe, it is destructed more gradually, and the deformations before the destruction have greater values. However, the thin-walled SN2 and SN4 pipes add nothing to increasing load-bearing capacity, unlike the SN8 sample, which increased the load-bearing capacity by about 10%. Therefore, the reinforced mid-section of ice samples with thin-walled PVC pipes marginally increased the plasticity of the samples, without the marked increase in the load-bearing capacity.
Historical Overview of Infilled Shell Structures in Construction Practice
Authors: Tsimbelman N Y , Chernova T I , Redko V S 
Published: February 2022

Abstract
The evolution of engineering solutions related to the use of closed shells in construction is shown. Examples of formation of structures from shells with filler are given depending on the historical stage of development of construction technologies. The reasons why the considered structure entered the practice of engineering design are displayed. Versions of combination of infilled shells in structure are shown, as well as examples of built structures and advantages of used structures from infilled shells.
Application of a Software and Hardware Complex to Improve the Operational Reliability of Water Pipelines
Authors: Bandurina I P , Bandurin M A , Prikhodko I A 
Published: February 2022

Abstract
This article discusses the issues of using a software and hardware complex to improve the operational reliability of water supply pipelines. The use of a software and hardware complex allows us to automate operational monitoring, and most importantly, significantly speed up the inspection of water supply pipelines for defects and damage by non-destructive testing methods, detect decompression and subsidence of soil around them. With its help, it is possible to characterize various parameters of defects and damages, as well as calculate the predicted residual life of their elements, and the geometric parameters of each defect, namely, the location, depth, width, height, as well as the operational assessment of the residual life, which consists in predicting the total number of freezing and thawing cycles that have passed during the period of operation and remained until the loss of bearing capacity of reinforced concrete elements of water pipelines.
Determining the Optimum Geometric Shape for Web Opening of Wide Flange Beams using Response Surface Methodology
Authors: Padunan K R R , Estores G B 
Published: February 2022

Abstract
In the field of civil engineering, the priority of a structural engineer is the safeness and stability of each structural element present in the structure. However, there were some concerns with regards to easy access and flexibility of the utilities such as electrical and mechanical systems. In response to these concerns, web opening was introduced to wide flanges to give way for the utilities, provided that the strength and durability of the structure will not be compensated. This study aims to obtain the optimum geometric shape of web opening for wide flange beams with regards to its performance for bending stress. The web opening on the wide flanges was designed first based on the parameters of the web opening. Then, the effects of circular, square, hexagonal and elliptical web openings were analyzed using Finite Element Analysis (FEA). Three varying support conditions in each opening case were used and analyzed using nonlinear static and nonlinear dynamic analysis in the finite element modeling software called Abaqus. During the FEA, deflection control method was used to obtain the value of force and stress upon reaching the deflection control value. Values of maximum stress and maximum force for each case were then obtained from the analysis, were used as factors for the Response Surface Methodology (RSM), which will define which shapes performed the best under specific conditions. Results obtained from RSM showed that considering value of the stress and deflection from nonlinear static and nonlinear dynamic analysis, elliptical web opening produced the largest force and smallest stress. Thus, elliptical web opening, considering bending stress, performed better compared to the other web openings.
Finite Element Study on Forming Helical Springs by Wire Bending with a Plate
Authors: Fann K J 
Published: February 2022

Abstract
Coil springs, widely used as mechanical elements, will enter another new production outlook due to the application of CNC wire bending machines and as the era of On-Demand Manufacturing is approaching. This article tries to follow the trend and use finite element analysis investigating parameters, such as the angle, shift distance, and wire diameter, applied in a CNC bending machine with a swivel plate as the die on the formed cylindrical helical coil springs. The results show that the angle of the swivel plate normal to the wire feeding direction and shift distance have a significant effect on the spring diameter, while the wire diameter has a significant effect on the spring pitch. The result will be used as a reference for the industry to develop On-Demand Manufacturing machinery applications in the future.
Influence of the construction stages analysis on the distribution of displacement and forces in columns of reinforced columns tall buildings
Authors: Boiadjieva Raina 
Published: February 2022

Abstract
The increasing construction of tall buildings in the world, as well as in Bulgaria, defines the desire for a more precise study of this type of structures. To satisfying this necessity, the possibility of carrying out nonlinear analysis of structures is included in many software packages. The question of the proper definition of material characteristics and the application of computational software in the design of structures with consideration of the stages of construction remains open. In addition to purely research, the problem has also a practical application related to the increasing number of tall buildings at different stages of design and construction. The issue of more accurate modeling of the behavior of tall buildings is discussed, with a focus on the distribution of forces and displacements in columns. A computational model of a tall building is considered. The distribution of forces and displacements in a computational model that accounts for the stages of construction is compared to one in which such consideration is not included. A comparison of the forces and displacements in representative sections of the columns in the two modeling options is presented as a result. Finally, general conclusions and recommendations for the research and design of tall buildings with reinforced concrete structure are given.
Vibration Fatigue Analysis of Interface Enclosure with Cantilever Structure for Charging Commercial Electric Vehicles
Authors: Hee Park Chan , Ho Ryu Shin , Dam Cha Jung , Ho Kim Gwang 
Published: February 2022

Abstract
The interface enclosure for charging commercial electric vehicle (CEV), which is an alternative to the fuel filler of internal combustion engine vehicle, was studied. It supplies the power and the communication signal for charging between the power supply (EVSE) and the battery. It should be long to match the exterior of the vehicle for easy charging, and it requires space between the vehicle frame and the enclosure to connect the charging cable. In order to design the interface enclosure with the cantilever structure which is vulnerable to vibration, analysis-based design through vibration fatigue analysis was conducted, and the reliability of analysis results was reviewed through experiments.
An Insight into High Entropy Alloys with a Focus on Friction Stir Processing
Authors: Moiduddin K , Abidi MH , Siddiquee AN , Mian SH , Mohammed MK 
Published: February 2022

Abstract
High entropy alloys (HEAs) have established an unprecedented stronghold in the domain of metallurgy in a relatively short span of time. The incoming era of engineering materials is expected to consist chiefly of these alloys, and therefore the research in this domain is ongoing extensively. Therefore, HEAs have been comprehensively discussed in the present work, covering from the fundamentals of entropy stabilization to the effect of microstructural modification on specific properties such as wear, creep and fatigue strength. The evolution of HEAs has been elucidated, along with the applications, characterization techniques for their identification and scrutiny. The methods for fabrication of HEAs such as arc melting, magnetron sputtering, laser cladding etc. are included inclusively. Importantly, the role of friction stir processing (FSP) in the advancement of HEAs has been elaborated. FSP induces further heterogeneity in the HEAs, which help to overcome the strength-ductility trade-off. The intricate effect of FSP on micro-structural modification and the consequent effect on mechanical properties has been studied through the light of literature available on such investigations.
Assessment and Enhancementofthe Manufacturing Productivity through Discrete Event Simulation
Authors: Alsaadi Naif 
Published: February 2022

Abstract
A balanced and resource-efficient assembly line plays a pivotal role in deciding the profit or loss of an industry. In automotive industries, the productivity of the specific materials is highly dependent on several explanatory variables and the processing operations. Moreover, in this 21st century, simulation is considered a powerful and cost-efficient tool for the designing and analysis of manufacturing operations. Therefore, in this research work, a case-study-based assessment of the assembly line in an automotive component vendor company has been proposed through the study of discrete events. Different processing operations are analyzed in terms of the productivity and effective utilization of available resources. The proposed model is set up by taking actual data using time study techniques from each workstation and process along the production line. All the processes, starting from the arrival of raw materials, forging, to the packing of final products are studied and their data is used to set up a model in software. A detailed statistical distribution of the data urged us to simulate the working area in the virtual environment under the different scenarios to define the bottlenecks. The simulation results have elaborated the realistic sense and meaningful contribution towards the performance enhancement of all the processes involved in the production line. Interestingly, Discrete event simulation has helped us to increase productivity as well as reduce the cost by eradicating the less used resources of the assembly line. Based on the results obtained, it is highly recommended to utilize the proposed methodology in the production system for acquiring better-quality and cost-effective products.