bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of a database for information support of virtual digital analysis in design and testing of road infrastructure elements
Authors: Demyanushko I V , Samigullin L F , Surkova N E 
Published: July 2021

Abstract
Ensuring traffic safety on the roads and reducing the number of deaths due to road accidents is a priority task both in Russia and in the global community. Assessment of safety in the event of vehicle crashes, oncoming lane exits, collisions with road barriers and other elements of the road infrastructure (ERI) requires the use of a wide range of modern and innovative information technologies-special environments for automated design of Digital Twins of road infrastructure elements, virtual tests with collision modeling and obtaining results on different input parameters of the simulation, modern automated testing of the road infrastructure elements. All these practical works, research and development are carried out at MADI together with scientific team LLC M&PQ to improve road safety. The article deals with the prospects of development of these works, a natural transition to another level of research. Based on the intellectual technologies in the field of road construction, work has begun on creating a special information environment, the so-called “Virtual Digital Proving Ground”, and, among other things, to provide it, a database (DB) of computer-aided design and virtual testing of digital models ERI, which will improve the efficiency and quality of work. The use of the ERI database will allow to implement the automated control of the developed ERI digital models, to implement tools for designing new innovative structures, to predict the behavior of accident participants, to develop reasonable standards in the field of road barriers of the future, to carry out examination by requests of various organizations.
The deliberate results distortion problem in the road construction materials laboratory and its disposal
Authors: Vasiliev Y E , Menkina U O , Kochnev V I , Sarychev I Y 
Published: July 2021

Abstract
Article considers the issue of asphalt concrete mixtures quality control necessity and analyses the road construction materials laboratory activity with detection description of an unacceptable random or a large systematic (shift) errors. In the process of producing asphalt concrete mixtures, there are many different factors that can influence their quality. In particular, such as: an inevitable change in raw materials properties, which is associated, among other things, with mineral components heterogeneity, for example, in grain size composition, moisture. There may be deviations in materials dosage, temperature variations and various other indicators, it is also necessary to consider subjective factor on performers part. Economic conditions for laboratory tests results distorting include: interest lack in maintaining information reliability and further strict control. There may also be a certain incentive for employee that determines appropriate behavior. Such incentives can both interest employee in providing reliable data, and can direct his actions towards a conscious distortion of information provided. At the present stage of laboratory testing level development of building materials, an important role in making management decisions is played by reliability and objectivity of information received. However, in road construction, laboratory test results distortion is quite large and plays an important role in industry. To increase results reliability of testing materials, recommendations are given for strengthening internal control in organizations, as well as external control by customer organization and / or regulatory authorities to ensure test results reliability.
Assessment of the road transport infrastructure facility functionality loss risk resulting from climate change
Authors: Yakubovich A N , Trofimenko Y V , Yakubovich I A , Shashina E V 
Published: July 2021

Abstract
The cause of a road bridge functionality loss risk in the conditions of climate changes in the Arctic is a decrease in its load-bearing capacity as a result of permafrost soil degradation. Modeling of the soil temperature regime of the bridge piling in Yakutsk for 2 years was performed and the minimum load-bearing capacity of the bridge piling was determined for this period. It was assumed that the average annual air temperature increased by 2 degrees Celsius in combination with an increase in the contrast between summer and winter temperatures. The obtained value of the climate risk level (438 units) allows to continue operating the facility without implementing engineering and technical measures aimed at stabilizing the soil temperature regime.
The development of standards for road restraint systems
Authors: Demiyanushko I V , Tavshavadze B T , Karpov I A , Petrosyan S S 
Published: July 2021

Abstract
The article discusses requirements for road restraint systems, gives recommendations for their classification, formulates the requirements for layout of cameras for recording tests, proposes a method for determining the values of the dynamic deflection and the working width of the road barriers. This work proposes a classification of road barriers; gives the estimates of the influence of tolerances in weight and collision speed of a vehicle in the field tests of road barriers on the values of dynamic deflection and the working width; introduces the concept of category for the dynamic deflection and working width of a barrier; supplements the testing methods for different types of road barriers.
Nanostructures based on carbon and silicon dioxide to improve the properties of building and structural materials
Authors: Kondrat’ev V V , Konstantinova M V , Kononenko R V , Kolosov A D 
Published: July 2021

Abstract
The article presents hardware and technological solutions for obtaining a product containing silicon dioxide from nanodispersed dust of gas cleaning of silicon production, intended to improve the properties of building and structural materials. To obtain nanostructures of carbon and silicon dioxide of the required quality, allowing to improve the properties of building and structural materials, a complex resource-saving technology of their high-tech production was developed. The necessary characteristics of nanodispersed modifying additives have been determined. A technological scheme has been developed; technological operations of thermal vortex enrichment are described. The material balance of thermal vortex enrichment is given.
The concept of functioning of the on-board quality control system for anti-icing pavement treatment
Authors: Mandrovskiy K P , Sadovnikova Y S 
Published: July 2021

Abstract
The article discusses the concept of an electronic system for ensuring the quality of anti-icing processing of sidewalks and other elements of road construction. The object of research is the quality of particle distribution of anti-icing material. In particular, such quality indicators as the width of the processing band, the density of distribution of the material over the coating and the degree of lateral deformation of the processing zone are considered. The subject of the research is the general principle of the control system for the numerical values of the distribution quality indicators. Such a system is based on mathematical models of the movement of individual particles of a material along a flat rotating disk and in air. The original mathematical basis was developed by the authors of the article, taking into account the analytical equations of motion of a particle on a rotating horizontal disk obtained earlier by other researchers and using Newton’s second law. The article describes the algorithm for the functioning of the distribution quality control system, which takes into account geometric, regime and meteorological parameters. The system is designed to work with a symmetrical way of feeding material from the tray to the disc. In addition, the physicochemical properties of the particles of anti-icing material and numerical quality criteria are taken into account, such as the required width of the processing strip, the rate of density of distribution (consumption) of the material and the maximum permissible degree of lateral deformation of the processing zone. The block diagram of the system is presented. As a result of the operation of the proposed system, it becomes possible to change the values of the operating parameters of the equipment in the process of material distribution, providing the required values of quality indicators. Thus, the negative impact on the ecological environment of the city will be reduced and the economic efficiency of anti-icing processing of sidewalks will be increased.
Investigation of the mechanical properties of polymer composite materials with various types of hybrid matrices in the extreme conditions of the Arctic
Authors: Kosenko E A , Baurova N I , Zorin V A 
Published: July 2021

Abstract
The technology of manufacturing carbon plastics samples with various types of hybrid matrices is presented, one of the components of which is completely cured, and the second (technical wax, anaerobic and organosilicon polymer materials) retains its viscoelastic state after forming products, which ensures a change in the mechanical properties of structural materials. The possibility of using carbon plastics with various types of hybrid matrices for the manufacturing of mechanical engineering products that are used in extreme Arctic conditions is studied. A method for conducting mechanical tests to determine the tensile strength of carbon plastics samples with various types of hybrid matrices at temperatures t1 = 20 ± 2°C, t2 = −30°C, t3= −50°C. The results of changes in the strength and deformation properties of carbon plastics with different types of hybrid matrices at negative and positive temperatures compared to the values of the same indicators of carbon plastics without viscoelastic components in the matrix are presented and analyzed.
Wheel rolling on deformable ground with slippage
Authors: Balabina T A , Karelina M Yu , Mamaev A N 
Published: July 2021

Abstract
A characteristic feature of wheeled earth-moving machines and tractors is their operation on deformable soils. This makes it necessary to consider the features of the interaction of elastic wheels with the ground, including such issues as the depth of the track and power losses for rutting, wheel movement along the laid track, rolling with pull, forces and moments acting on the wheel, the effect of wheel parameters and rolling mode etc. When a pneumatic wheel with a high internal air pressure rolls on a deformable soil, the nature of the interaction of the wheels with the soil is such that the wheel can be considered rigid, since its normal deformation is small. This greatly simplifies the calculations associated with the analysis of the operation of wheeled machines taking into account the transforming properties of the wheeled propulsion unit, in particular, the determination of the kinematic and power parameters of the wheel. In this paper, using the motion reversal method, the picture of physical phenomena in the contact of the wheel with the ground has been considered, which made it possible to obtain relatively simple expressions for calculating the circumferential thrust force and the coefficient of tangential elasticity of the pair “wheel-deformable soil”.
Environmental safety diagnosis and maintenance specific of heavy vehicles and buses engines functioning with compressed natural gas
Authors: Boldin A P , Panov Yu V , Solntsev A A , Aksenov P V 
Published: July 2021

Abstract
The results of a statistical survey of the content of toxic components CO, CH and NOX in the exhaust gases of 38 “LiAZ” buses (4th and 5th ecological classes with foreign-made engines) at the nominal and increased engine crankshaft rotation speeds in idle running at compressed (compressed) natural gas in Moscow and adjacent areas of the region. It has been established that, as a first approximation, these modes provide information on the deterioration of environmental safety, primarily in relation to nitrogen oxide (NOx) emissions, the control of which in ordinary operation by the existing technical regulations for all types of vehicles, including heavy-duty gas vehicles are not provided. Statistical processing, with an assessment of the maximum permissible value of this diagnostic parameter in two idle modes (no more than 50 M-1 for the best attainable states of buses of the 5th ecological class), showed that the absence of such a simple control leads to approximately 75% of faulty states. These indicators can be significantly improved with the introduction of monitoring of operational monitoring of NOx and the development of more complex maintenance technologies. Herewith there is a significant environmental safety improvement of gas motor buses in comparison with diesel versions (approx. 6-8 times) and the technological and economic feasibility of their use for many regions of the country. Preliminary studies of the structure of such a technology have been carried out on a “KAMAZ” gas vehicle, which has an engine control different from “LiAZ” buses. At the same time, the higher NOX emissions level could be considered as allowable for intercity bus transportation and for activities outside the city, however, they can be reduced by about 3…5 times due to the use of the latest versions of pre-chamber devices “Ball Lightning”.
Establishing the requirements for the minimum values of stopping sight distance on the road surface from the condition of vehicle braking safely
Authors: Kuznetsov Yu V , Ghassan Ola Ismail 
Published: July 2021

Abstract
The article is devoted to determine the stopping sight distance from the condition of the possibility stopping a car that moving at design speed. Determination is based on experimental studies of the dependences the coefficient of friction on the vehicle’s speed, when braking happens on the road surfaces that have the minimum permissible coefficient of friction value, established by the current regulatory literature. Braking of vehicles was studied on two surfaces with a minimum value of the coefficient of friction, but they were differing in surface roughness. Based on theoretically calculated braking distances, requirements for stopping sight distance with different design speeds have been developed. The obtained values of stopping sight distances are compared with the values contained in the normative documents of Russia and foreign countries.
Methodology of assessing the regulated crossing throughput with a dedicated lane for ground public transport based on a probabilistic model
Authors: Pospelov P I , Long Le Duc , Tatashev A G , Yashina M V 
Published: July 2021

Abstract
One of the problems of traffic management in the allocation of lanes for ground public transport (GPT) is the organization of the right turn at regulated and unregulated intersections. High traffic intensity at a regulated intersection on the main carriageway and a significant proportion of right-turn traffic leads to numerous violations of the rules of passage when making a right turn. A method for assessing the throughput of a controlled intersection with a dedicated lane before joining is presented on the basis of a deterministic stochastic model.
Analysis of hydrogen use as an energy carrier in transport
Authors: Keller A V , Karpukhin K E , Kolbasov A F , Kozlov V N 
Published: July 2021

Abstract
The subject of the analytical review is the power units of electric vehicles using hydrogen fuel cells. A prerequisite of the research is the ever-increasing urgency of developing vehicles with zero emission of carbon dioxide and other harmful substances. Materials are taken both from open sources of information (Internet) and from scientifically reliable sources of information (peer-reviewed publications). The scientific methods of performing this analysis include an informative review of sources. Originality lies in the choice of the topic and the findings from the analysis. As a result of the analytical review the tendencies of the automobile market development have been revealed; the technical advantages of hydrogen fuel cells as compared to batteries have been given; the conclusions have been drawn about the availability of the programs of carbon dioxide emission reduction in the European Union, the USA, Japan, China, Korea as well as about the readiness of the technology of the fuel cells use in the traction electric drive for the introduction, including the patenting of the technologies by the leading automobile manufacturers; the most promising segments of transport for this purpose have been described. The results of the analysis are applicable to the design of electric vehicles and their power plants by vehicle designers and manufacturers.
The development of a dependent mathematical model of dielectric properties of an engine oil to the concentration of soot formation
Authors: Khaziev A A , Sugatov N N , Laushkin A V 
Published: July 2021

Abstract
The frequency of engine oil replacement reaches 150 thousand km for modern trucks, which increases the load on the lubrication system, leads to an increase in the level of contamination and to a greater level of oil degradation. The accumulation of dirt in the oil and, above all, soot leads accelerated wear of bearings, valves and camshafts, and increases the rate of formation of sludge and deposits on the piston rings. All this significantly reduces the engine life. The purpose of the work is to estimate the soot concentration in engine oil by its dielectric parameters measured by the waveguide method. To study the dependence of the dielectric parameters of engine oil on the soot concentration, the transmission line method was chosen and an installation was created that allows measuring the signal amplitude in a given frequency range. Tests performed on various engine oils at soot concentrations in the oil from 0 to 1.06% allowed us to identify the most optimal frequency regions where high sensitivity of the method is achieved. The nature of the change in the dielectric constant of engine oil with an increase in the concentration of soot in it is established. Diagnostic indicators such as the frequency of peak peaks and the signal amplitude at the optimal frequency are identified. Mathematical models of the dependence of the peaks amplitude and frequency on the soot concentration in engine oils are constructed.
Study the effects of methane disulfonic acid sodium salt on Cr (VI) reduction using rotating disk electrode
Authors: Lou Xia , Zhou Ke , Li Zhi , Zhao Qiang , Sun Yan , Luo Chunhui , Yan Kangping 
Published: July 2021

Abstract
Chromium (VI) electroplating plays a vital role in the surface engineering industry for metallic materials due to its high hardness and excellent chemical stability. However, the reduction of Cr (VI) is a series of complex reactions that exhibits low current efficiency. As such, this low current efficiency in the process poses a significant challenge in the adoption of CR (VI) electroplating in the surface engineering industry. Methane disulfonic acid sodium salt (MDAS) is an essential catalyst for Cr (VI) electroplating. In this work, the effects of MDAS on the current efficiency of Cr (VI) electroplating process is studied. It is discovered that the current efficiency increases to about 17% when 4–6 g l−1 MDAS is added in the bath, which is an improvement over the current efficiency of 12% for its counterpart without MDAS. Furthermore, rotating disk electrode method is employed to investigate its interaction mechanism with regards to the reactions which have occurred during this process. It indicates that MDAS demonstrates a remarkable catalytic ability towards the electrochemical reaction which occurs at the lower-potential peak. This lower potential peak corresponds to the electrochemical reaction of Cr (VI) to Cr (0) or Cr (III) to Cr (0).
Minority Stress, Structural Stigma, and Physical Health Among Sexual and Gender Minority Individuals: Examining the Relative Strength of the Relationships
Authors: Flentje Annesa , Clark Kristen D , Cicero Ethan , Capriotti Matthew R , Lubensky Micah E , Sauceda John , Neilands Torsten B , Lunn Mitchell R , Obedin-Maliver Juno 
Published: July 2021

Abstract

Background
Sexual and gender minority (SGM; i.e., non-heterosexual and transgender or gender-expansive, respectively) people experience physical health disparities attributed to greater exposure to minority stress (experiences of discrimination or victimization, anticipation of discrimination or victimization, concealment of SGM status, and internalization of stigma) and structural stigma.

Purpose
To examine which components of minority stress and structural stigma have the strongest relationships with physical health among SGM people.

Methods
Participants (5,299 SGM people, 1,902 gender minority individuals) were from The Population Research in Identity and Disparities for Equality (PRIDE) Study. Dominance analyses estimated effect sizes showing how important each component of minority stress and structural stigma was to physical health outcomes.

Results
Among cisgender sexual minority women, transmasculine individuals, American Indian or Alaskan Native SGM individuals, Asian SGM individuals, and White SGM individuals a safe current environment for SGM people had the strongest relationship with physical health. For gender-expansive individuals and Black, African American, or African SGM individuals, the safety of the environment for SGM people in which they were raised had the strongest relationship with physical health. Among transfeminine individuals, victimization experiences had the strongest relationship with physical health. Among Hispanic, Latino, or Spanish individuals, accepting current environments had the strongest relationship with physical health. Among cisgender sexual minority men prejudice/discrimination experiences had the strongest relationship with physical health.

Conclusion
Safe community environments had the strongest relationships with physical health among most groups of SGM people. Increasing safety and buffering the effects of unsafe communities are important for SGM health.
XRRpred: accurate predictor of crystal structure quality from protein sequence
Authors: Ghadermarzi Sina , Krawczyk Bartosz , Song Jiangning , Kurgan Lukasz 
Published: July 2021

Abstract

Motivation
X-ray crystallography was used to produce nearly 90% of protein structures. These efforts were supported by numerous sequence-based tools that accurately predict crystallizable proteins. However, protein structures vary widely in their quality, typically measured with resolution and R-free. This impacts the ability to use these structures for some applications including rational drug design and molecular docking and motivates development of methods that accurately predict structure quality from sequence.

Results
We introduce XRRpred, the first predictor of the resolution and R-free values from protein sequences. XRRpred relies on original sequence profiles, hand-crafted features, empirically selected and parametrized regressors and modern resampling techniques. Using an independent test dataset, we show that XRRpred provides accurate predictions of resolution and R-free. We demonstrate that XRRpred’s predictions correctly model relationship between the resolution and R-free and reproduce structure quality relations between structural classes of proteins. We also show that XRRpred significantly outperforms indirect alternative ways to predict the structure quality that include predictors of crystallization propensity and an alignment-based approach. XRRpred is available as a convenient webserver that allows batch predictions and offers informative visualization of the results.

Availability and implementation
http://biomine.cs.vcu.edu/servers/XRRPred/.

Supplementary information
Supplementary data are available at Bioinformatics online.