bluuebunny/crossref_metadata_2025 huggingface dataset:
Case Study: Optimization of Grid-Connected Photovoltaic Self-Consumption Systems for The Commercial Sector in Honduras
Authors: Lara Monge C , Vásquez Márquez L , Reyes Duke A M
Published: July 2021

It is common to see how the installation of photovoltaic systems is being used in the commercial sector to minimize costs on the electric bill, so if the aim is to obtain the greatest benefits from the photovoltaic system, it is necessary to carry out a correct sizing of its nominal DC capacity prior to installation. To achieve this in a more reliable way, the initiative was taken to develop a program with LabVIEW where it is possible to find the most profitable sizing based on the selection of the best scenario from a variety of simulations that it will carry out, this choice is based on the Net Present Cost (NPC) resulting from simulations. For the correct operation of the program, meteorological data of the hourly annual global irradiance were included. The data for the consumption analysis for each case was obtained from the load profiles of 8 selected banks. This research was carried out in the county of Santa Rosa de Copán, Honduras. The program developed in this research was able to determine the optimal result for each banking agency according to each scenario analyzed. The cases were categorized depending on their annual energy consumption, which are between 30 and 200 (MWh/year). Each bank was analyzed in 3 scenarios: no surplus compensation, net billing, and net metering. The development of this research determined the average nominal DC capacity required by an installation located in the proposed consumption categories and that with the current scheme that is managed in the country (without compensation of surpluses), it is economically attractive to optimize a grid-connected photovoltaic system for self-consumption, due to the significant amount of economic benefits it represents for the user, which in this research are between 28,000 and 165,000 (USD).
Characteristics of Energy Production and Consumption in Sichuan Province and Development Strategies
Authors: Zhang L , Du Fang
Published: July 2021

The new energy revolution has put forward new requirements for energy production and consumption. This study systematically analyses the characteristics of energy production and consumption in Sichuan Province from 2015 to 2018. According to our analysis, natural gas and hydropower were the main sources of energy production in Sichuan Province, while the outputs of coal and, in particular, oil did not match consumption demand. Meanwhile, the industrial sector and household consumption were the main energy-consuming sectors in Sichuan. This study opines that, on the one hand, Sichuan Province should continue to develop and expand the production and consumption of clean energy and explore expanding the production of wind and solar energy. On the other hand, the province should devote attention to research and development for improving the efficiency of high-carbon fossil energy utilisation. Additionally, Sichuan Province also needs to focus on increasing the inventory of coal- and oil-based energy. The three aspects above require technological innovation. Hence, developing and introducing related technologies and talents is a long-term energy development solution for Sichuan Province.
Application of determining the price of batik using Fuzzy Tsukamoto
Authors: Simabur P R F , Tempola F
Published: July 2021

Competition in the world of business is something that is definite and occur in all kinds of b business. One of the ways that businesses keep running is to satisfy the customer. Batik business sales in Indonesia continues to grow, this is because one of the non-verbal culture heritage objects is Batik. But not all business people have good luck, this is because they are unable to satisfy customers. Things that make customers upset one of the types of batik is not in accordance with the price. Fuzzy Tsukamoto is one method that there is fuzzy for the determination of the decision. No exception to the price of batik. This study uses Tsukamoto fuzzy to determine the price of batik. The results of the implementation of the Tsukamoto fuzzy method in determining the price of batik in accordance with the price of fabric, the manufacturing process, batik motifs and colours. This system can also help determine the price of batik in accordance with the quality of batik.
Use of the Web API as a basis for obtaining the latest data on bitcoin prices at 30 exchange places
Authors: Parlika Rizky , Pratama Arista
Published: July 2021

Bitcoin has become a commodity traded by millions of traders from all over the world. This is one of the causes of fluctuating price movements. From the data we got on coinmarketcap, Bitcoin is traded on various cryptocurrency trading exchanges. And at every exchange that has a reputation, of course, has an API service to access historical data about the price movements of all the crypto commodities they have traded from the start. By using the PHP programming language and implementation of the CURL function for JSON readings, we can pull Bitcoin movement data in real time. In this paper, Bitcoin is specifically observed because it is the forerunner and the main cryptocurrency commodity traded and is a determinant of Alternative coin price movements in general. In this paper Bitcoin price monitoring is carried out at 30 reputable exchange places through API access provided by each exchange place. Furthermore, conclusions are drawn about the various variants of how to access the API from the 30 bitcoin exchange places. The program code that is displayed directly in this paper can then be used as an initial reference if you want to develop a Cryptocurrency price movement monitoring application for Bitcoin. At the end of the paper, an example of the application of Bitcoin price monitoring will be presented using a web-based application containing charts and supporting indicators as well as a telegram bot to display price depth charts.
Design and Analysis Robot Puzzle for Capacity 0.5 Kg
Authors: Lasttanto Achmad Fajar , Cholis Nur , Pradana Sigit
Published: July 2021

The industrial revolution 4.0 brought many changes to the manufacturing process. The use of robots in manufacturing is used to increase efficiency. One type of robot used is a robotic manipulator. Robot manipulators are robots that make up arms, and arms. The purpose of this study was to study puzzle assembling robots with a capacity of 500g. The robot is divided into five parts, namely the gripper, swing arm, standing beam, slide base, base X and base Y. Robots using Arduino UNO microcontroller as controller. The material used to approve the robot is the PLA which has the ultimate strength of 17,772 MPa. Robots are made with 3D printing methods. From the results of the design obtained several parts must have a cross section in order to be able to load the puzzle.
Evaluation of Energy Saving Effort on Office Buildings in Archipelago City
Authors: Rahim Mustamin , Quraisy Sayyid
Published: July 2021

Building accounts have a significant impact on increasing energy consumption, primarily for air conditioning and lighting. This study aims to identify the energy consumption effort in office buildings by evaluating the lighting and ventilation systems through literature review, questionnaire, and field observation. The results show that generally, office building uses air conditioning with about 88% during office hours. Lighting is dominant from artificial lighting of around 63 % and only 37% use daylighting. The usage of low energy lamps is very minimal of only 29 %. Therefore, it necessary to reduce energy consumption by maximizing the usage of daylighting and natural ventilation systems; more than 63 % of office buildings can be operated the natural ventilation system.
Evaluation of Landslide Based Settlement Distribution in Manado City
Authors: Sulastriningsih Helena Sri , Tewal Selvana T.R. , Suoth Grace F. E.
Published: July 2021

This research was conducted in Manado with the aim of identifying factors that could potentially cause landslide susceptibility, mapping the distribution of potential landslides, and evaluating the distribution of landslide-based settlements.

The materials used in this study are daily rainfall maps, slope maps, geological / rock maps, fault maps, soil solum depth maps, land use maps, infrastructure maps and population density maps on a scale of 1: 75 000. The map used as research material sourced from documentation studies and interpretation of maps of the earth and satellite imagery. Likewise, other data needed to support this research was obtained through documentation studies and field measurements. Each variable is used to determine landslide scaling and weighting vulnerability. The sum of the multiplication scores and weights of each variable is categorized into five classes of landslide susceptibility levels, which are very light, mild, moderate heavy and very heavy. Settlement distribution analysis is carried out by overlapping between landslide maps and settlement maps using geographic information system (GIS) technology with ArcView GIS 3.3 software.

The results of the study indicated that there were three factors that triggered landslide susceptibility in Manado that had a significant effect, namely geological / rock constituent factors, fault factors, and depth of soil solum. Other factors both physical and management factors have a weak influence on landslides because they are on slopes <25%. Most (91.57%) of the study area had very low to low landslide susceptibility. Therefore, the distribution of settlements in the study area is generally in areas that are safe from landslides. Only about 46.12 ha or around 1.17% of settlements in Manado are located in high landslide susceptibility areas. Settlements located in areas with high landslide susceptibility are spread across seven sub-districts, which are located in Bunaken, Tuminting, Mapanget, Sinkil, Pal Dua, Wanea and Malalayang Districts.
The experimental test of the best abasorbents for controlling poly aromatic hydrocarbon on sea water around graving dock and hhip loading terminal
Authors: Zulaihah Lilik , Marasabessy Amir , Sari Santika
Published: July 2021

Bentonite and zeolite adsorbents have the ability to adsorb PAH content around the shipyard and ship loading and unloading areas. The factors that potentially affect the level are: a. The types of bentonite and zeolite adsorbents, b. Sampling time is 0, 2, 4, 6 and 8 hours. Adsorption of poly aromatic hydrocarbon by zeolite adsorbent as much as 150 gram done at certain place with volume of 3 liters of sea water taken from ship loading and unloading terminal area and at time variable 0, 7, 14, 28 and 42 days. Measurement of PAH on day 0 by way of direct examination of sea water concentration and PAH type. Determination of the best adsorbent, seen from the ability of the absorption of PAH both in the high concentration and the number of PAH types adsorbed, the results showed that zeolite adsorbents have better adsorption capacity because it has sufficient surface area and does not clot when exposed to water. The concentration of sea water PAH at ship loading and unloading terminal is very high, that is 65,45ppb, especially for PAH type of naphthalene and 2-Bromonaphthalene ie 28,3255 and 27, 2821ppb respectively. The ability of zeolite adsorbent and maximum adsorption of PAH at 28 days adsorption, ie 19, 75ppb is dominated by Benzo(a)pyrene type PAH with concentration of 19,2771ppb. Based on Linear Regression test to total PAh, it can be concluded that the value of R Square 0,190511343 which shows that the absorption time by zeolite absorbent and absorption power of poly aromatic hydrocarbons compound of the whole types has no significant effect. Therefore, polynomial testing is done through the equation y = -8,959x^3+62,858x^2-125,49x+72,379 yield value R^2= 1 which means absorption of 100% polyaromatic hydrocarbons compound in time.
Improvement of the technology of cold reclamation of asphalt concrete in the asphalt plant and the possibility of its application in the republic of Iraq
Authors: Al-Karaguli M M , Lupanov A V , Silkin V V , Haba M M
Published: July 2021

This article presents the state of the highways in the Republic of Iraq and studying the possibility of using the regeneration technology of asphalt concrete as a base for road pavements strengthen. This technology has not yet used in Iraq. Therefore it proposed to use for the maintenance and reconstruction of roads the technology of cold regeneration of asphalt concrete in the asphalt plant, which ensures the improvement of the properties of asphalt granules due to its preliminary crushing, the introduction of cement additives as a mineral binder. Compositions of asphalt-granular-concrete mixtures have developed, and data from studies of the properties of asphalt-granular-concrete of various documents presented. The most common pavement defects in Iraq are plastic deformations, which are caused by a combination of high temperatures and low strength characteristics of asphalt concrete. Pregame compositions used to strengthen the construction of road pavements with increased strength and shear stability. A cost-effectiveness calculation of using the cold technique is also presented moreover compare the cost this application in Russia and Iraq also.
Semi-Markov modeling for assessing reliability of road construction machines in the process of their operation
Authors: Fyodorov V K
Published: July 2021

The article provides a theoretical description of the processes of changing the technical state of road-building machines to assess their reliability at the stage of operation based on semi-Markov models. Reliability is the most important property of machines and characterizes their ability to perform their functions during normal operation. Reliability covers all stages of the life cycle of equipment-its design, manufacture, and operation. The operation stage is the longest in time and the costliest to ensure reliability. This explains the relevance of developing a mathematical model of operational reliability of road-building machines. During the operation of technical objects, their technical condition changes under the influence of objective and subjective factors. As a result, quantitative indicators that characterize the technical condition of machines vary widely and are random in nature. Road-building machines may be in one of the following technical states during operation: perfect, imperfect, upstate, down state. At the same time, a perfect machine is always upstate, and an imperfect one can be either upstate or down state. The transition from one technical state to another is random and can be considered instantaneous with a sufficient degree of accuracy. The probability of any technical state in the future depends only on the state of the process in the present and does not depend on when and how the process was in this state. This makes it possible to use the theory of semi-Markov processes when formalizing the process and developing a mathematical model. Based on semi-Markov modeling, the article shows the sequence of constructing a graph of states and transitions from one state to another for a road construction machine during operation; matrices of transitions and probabilities of transitions from one state to another; systems of differential equations for determining the limiting probabilities of finding a machine in a particular technical state during operation. The developed method of semi-Markov modeling allows estimating the operational reliability of equipment with the reliability allowed by probability theory.
Hydraulic modeling of surface vortex funnels
Authors: Artemyeva T V , Zuikov A L
Published: July 2021

The peculiarities of the operation of entrance portals for concrete and corrugated metal road pipes, water intake pipelines, spillway structures and hydroelectric power plants include the formation of surface vortex funnels. The formation of surface funnels reduces the water consumption in the pipeline, provokes the destruction of the fastening of the slopes at the inlet, the suction of sludge, ice and debris into the pipeline. It is desirable to avoid these phenomena. The article is devoted to the issues of physical modeling of surface funnels. The aim of the research is to determine the criteria for the breakthrough of the air core of the surface funnel into the pressure pipeline. As a result of research, it was found that the formation of vortex funnels in the upper basin is determined by the structure of the flow in the local area adjacent to the water intake. It is shown that the profile of the free surface of the vortex funnel and its depth on the axis of rotation are determined by the intensity of the circulation generating the funnel. A formula is obtained for calculating the limiting depth of a surface vortex funnel with an accuracy sufficient for engineering calculations. It is shown that in physical modeling according to Froude’s defining criterion, the depth of the funnel obtained on the model should be recalculated for a full-scale object with a scale factor m
−1.5, where m is the linear scale of the model. Another method for obtaining the depth of the funnel on the model, corresponding to its conversion to a full-scale object on a linear scale, is forcing the current velocities by m−3/14 times in relation to their value according to the Froude criterion.
Economic efficiency of road surface construction using the cold technology of recycling the asphalt-concrete in Iraq and Russian Federation
Authors: Al-Karaguli M M , Lupanov A V , Silkin V V , Zumbadze B G , Sarmad S S
Published: July 2021

This article illustrates the state of roads in the Republic of Iraq and studies the possibility of using the cold regeneration technology of asphalt concrete as the base of the pavement. Moreover, it shows the economic efficiency of using the technology of cold regeneration of asphalt concrete in the asphalt plants and the roads, including crushing of granulate, cement and an aqueous solution of an emulsifier. As compared with the traditional methods of hot asphalt paving, the use of cold technology of recycling the asphalt concrete in (Iraq and the Russian Federation), shows remarkable advantages in both economic and environmental effects.
A method for estimating the potential of the physiological and emotional characteristics of a driver in a changing traffic situation using the ADES information system
Authors: Dotkulova AS
Published: July 2021

Road traffic accidents are one of the problems of organizing road safety. According to statistics, every fifth road traffic accident in Russia occurs due to the unsatisfactory condition of streets and roads. The driver must react quickly to changes in the traffic situation while driving. Analysis of the human factor and identification of patterns in the driver’s behavior on the road remains an urgent issue. This article is devoted to the design of an information system that helps to assess the emotional and psychophysiological state of the driver, for further forecasting his actions on the road. The method of processing the research results using the Wilcoxon test is presented.
Development of a distributed mobile system «SiLOK» for the task of reconstructing a three-dimensional model of a roadbed rut
Authors: Yashina M V , Kuteynikov I A , Lavrov O S
Published: July 2021

Roadbed defects are inconvenient, especially in developing countries, and can often result in vehicle damage or physical injury to passengers. By using smartphones as a source of information on roadbed conditions, drivers can be warned of approaching problem areas in real time. In addition, the location of problem areas can be saved and shared to help other drivers and road services. This paper presents a client-server mobile system “SiLOK” for reconstruction of a three-dimensional model of a roadbed rut based on a smartphone and a profilometer. The system allows the driver to register the presence of a roadbed rut, after which data about it is transmitted to the server and recorded in the database as feedback. Also, the system, based on the analysis of the route processed by other users of the system, warns the driver about approaching the roadbed rut section.
Positioning accuracy estimation for on-board data processing at the road surface defects monitoring
Authors: Yashina M V , Tatashev A G , Fomina M Y
Published: July 2021

In this work, an approach has been developed to analyze data on the movement of a vehicle obtained as a result of measurements carried out using a satellite navigation system. The issues of increasing the accuracy of such measurements are of great importance in quality monitoring of road maintenance for geo-referencing of detected roadway defects. When using the proposed approach, the speed of a vehicle is considered as a stationary random process, the correlation function of which belongs to one of the specified classes. Based on the monitoring results, the value of the correlation function parameter is selected, which, in a certain sense, best matches the measurement results. The problem is also solved in a certain sense of the optimal choice of the duration of the averaging interval of the velocity values obtained as a result of monitoring, while taking into account how much, for the selected duration of the averaging interval, the sample obtained correlation function of the velocity corresponds to the correlation function from the hypothetical class for the selected parameter value.
Optimization of pedestrian traffic in residential areas of large cities
Authors: Konovalova T V , Nadiryan S L , Mironova M P , Litvinov A E
Published: July 2021

Currently, there is a high activity in the construction of multi-storey residential buildings in large cities. This causes an increase in pedestrian flows and traffic intensity in various areas of cities, but most streets and roads are not designed for a given number of pedestrians and vehicles. In turn, this leads to a decrease in the safety of pedestrian traffic in these areas.
Development of proposals for the development of the design algorithm of road pavements using geosynthetic materials
Authors: Korochkin A V , Dumenko V A
Published: July 2021

The paper deals with the manifestation of nonlinear properties of granular materials. In addition, the analysis the possibility to take into account the influence of the geogrid on the strength characteristics of the layer is made. For a numerical experiment, a pavement structure was chosen. It was designed in accordance with the calculation methodology existing in Russia and consisting of three layers of asphalt concrete, a base layer of granular incoherent materials and a base layer of sand. For a comparative analysis of the methodology, the specified structure was also designed using the algorithm that takes into account the stress-deformed state of granular particles in the bearing course layer using a mechanic-empirical model for the determination of the elastic modulus. The topic was further justified by appropriate structural calculations, taking into account the influence of a geogrid placed above the underlying layer, both in accordance with the current legal document and according to the proposed method, which is based on the change in horizontal compressive stresses in terms of the geogrid operation. The comparison of the results showed that the current method for the design of road pavements is not enough to reflect the effect of the use of a geogrid on the strength of the structure during the calculation and, in general, underestimates the requirements for the strength of pavements.
Road conditions and traffic speeds
Authors: Lushnikov P A , Lushnikov N A , Kretov V A , Kostsov A V
Published: July 2021

The paper shows that from the point of view of energy consumption, the most optimal is the mode of movement with a constant speed among all possible speed modes of move-ment due to the fact that the average value of the mechanical energy of a moving car has a minimum value when driving at a constant speed. However, in real road conditions, certain sections of road do not allow moving at the selected speed and drivers are forced to change the mode of movement of the car for various reasons. The article discusses various methods for the assessment of the unevenness of the traffic flow speed, providing the use of forward accelerations, the coefficient of variation, as well as spatial and temporal speed. The study was carried out using the experimental analytical method. The paper shows that the forward accelerations of a car moving in a traffic flow have an oscillating character. Therefore, it is difficult to determine problem areas of the road that are the reasons for the decrease in speeds. It is also difficult to determine the areas where the speeds of movement change from the linear graph of the coefficient of variation, since this graph oscillates to a greater extent than the acceleration graph. As a result of the analysis and numerical calculations, it was proposed to assess road conditions by the ratio of temporal and spatial speed, which characterizes the unevenness of the speed of movement of vehicles. It is proposed to call this ratio the coefficient of speed unevenness of the traffic flow. It is shown that this indicator is more convenient for the determination of problem sections of the road. The graphs are based on the results of experimental measurements of driving speeds on specific highways. The coefficient of unevenness of speed better reveals problem road sections, since the dependence of this coefficient on the traveled distance has a much less oscillating character, which facilitates the selection of unfavorable sections of highways, in comparison with other existing indicators. The important result of this work is the proposal to use the coefficient of speed unevenness as one of the criteria for the assessment of road conditions, for example, when diagnosing highways.
Testing of cement-concrete road surfaces for wear resistance
Authors: Ushakov V V , Vasiliev Yu E , Dmitriev S M , Dyakov G G , Agaryshev O
Published: July 2021

The article presents the results of a study of the wear resistance of cement concrete coatings of highways. The tests were carried out on the passenger module of the universal complex for testing the road surface and car tires KUIDM-2 “Carousel”, built on the territory of the MADI Educational and Scientific Center (MADI ESC). On a circular stand, the real conditions of interaction of a studded tire of a car wheel with a cement concrete surface were modeled. Road pavements were arranged on the track of the universal ring complex in the form of segments-concrete slabs 100 x 120 cm in size and 10 cm thick. The concrete slabs were subjected to repeated abrasion by spiked rubber. Research has made it possible to establish the influence of the nature of crushed stone, its strength and size of fractions on the wear resistance of cement concrete pavements.
Numerical modeling of multilayer asphalt-concrete roads based on the finite element method
Authors: Demyanushko I V , Stain V M , Stain A V
Published: July 2021

The task of creating progressive technologies for the construction of highways and high-speed railways require the development of new methods of computational and design analysis based on computer technologies and modern methods of mechanics, considering the complex, physically and geometrically nonlinear nature of the problems being solved, the peculiarities of the operation of multilayer structures and the cyclical nature of transport loads. Studies on the application of the finite element method (FEM), carried out at the Department Construction material technology, MADI, have shown the effectiveness of this method for calculating road surfaces and high-speed railways, considering the real work of bases, structural features of longitudinal and transverse seams, etc. These studies made it possible to identify such features of the behavior of road structures that could not be described by existing engineering techniques. The presented finite element models for solving various problems of analyzing the behavior of pavement structures have shown the prospects of using the developed approaches for digital modeling of multilayer roads with asphalt concrete pavement.
Development and scientific justification a set of the high-speed road construction machines with hardware-percent integration and intellectual interactions algorithm of various technical systems
Authors: Kustarev G V , Ushkov A V
Published: July 2021

The description of complex technical systems with the implementation of hardware and software integration through the introduction of additional controls is presented. Recommendations for increasing the service life of the road surface and preventing premature repair of asphalt concrete surfaces are presented. A review of possible difficulties in implementing new technologies in road construction companies is performed. The project of modernization of new equipment is described, considering the research conducted in the field of finding alternative solutions to eliminate the “human” factor during road construction works. The interaction of the components of the complex for high-speed construction of asphalt concrete pavements is considered. The work of machines is described from the energy point of view, which is based on various interaction processes. The main components of the system structure and principles are considered. Multi-factor processes of road construction equipment operation are explained. The structure of algorithms for implementing an integrated machine management system is presented. The structure of hardware interaction through mathematical modeling to direct control of machine functionality in real time is described. Asphalt paving is represented by a multi-factor process, where one of the significant factors of the quality of the laid asphalt concrete is the road construction equipment used, which provides the required quality parameters of the road surface. The article describes a method for creating complex structural elements that allow creating artificial intelligence systems in the future.
Comparative evaluation of the performance of different asphalt concrete road pavements on reinforced concrete road structures
Authors: Arous N N , Goryachev M G
Published: July 2021

Comparative design of structures allows at an early stage of project development to assess their behavior and predict service life. Approximate numerical methods, for example, the finite element method, are widely introduced to simulate the operation of pavements on road structures. The variety of modern asphalt concrete poses the problem of finding the most effective design solutions based on the results of comparing the performance indicators of road pavements. The article presents the results of modeling by the finite element method of the work of road pavements, consisting of a two-layer asphalt-concrete package, on a reinforced concrete slab of bridge. Various options for combinations of asphalt concrete are considered. The well-known American method of the Asphalt Institute was used as a methodological basis. For the criterion of the limiting state, the indicator of accumulated fatigue cracks in the amount of 10% of the wheelpath area is taken. Preliminary recommendations are given on the field of application of the considered road pavements on reinforced concrete bridges in the conditions of the Syrian Arab Republic.
Ready-mixed concrete recycling system
Authors: Maksimychev O I , Ostroukh A V , Filippova N A , Pronin C B , Libenko A V
Published: July 2021

This article describes the technological diagram and equipment required for establishing a Ready-Mixed Concrete Recycling System, which allows to divide concrete into separate components, such as cement milk, crushed stone and sand. The waste from demolished concrete structures can be reused to reduce the environmental burden during their life cycle and ensure economic use of the construction resources. The recycled aggregate concrete is a sustainable concrete waste which in the long term can replace the demand for natural aggregate, a process which would, in turn, lead to its preservation. Most concrete industries have been observed to be reluctant in the production of recycled aggregate concrete and utilization in its maximum potential. Industries are yet to embrace it not only due to its uncertain material performance but also due to its unexplored manufacturing plant operations which are yet to be established. The system is using wireless communication technologies and data exchange between sensors and data acquisition devices. The raw materials obtained by the showcased recycling process could be reused in subsequent production cycles of ready-mixed concrete preparation. The following process could help reduce the growing amount of industrial waste generated with constant infrastructure improvements, which could be beneficial both from an environmental and economical standpoint.
Railroad cement warehouse digital system
Authors: Vasiliev Y E , Ostroukh A V , Pronin C B , Sarychev I Y , Kotlarsky I.E.
Published: July 2021

In the article the concept of Railroad Cement Warehouse Digital System (RCWDS) with two silos. The article briefly analyzes the ways of unloading hopper, as well as basic equipment for mechanical and pneumatic conveying of cement hopper in the cement silos. The system is a set of hardware maintenance, information, mathematical and software for management of technological objects of railroad warehouse of cement. The system allows you to track trends in cement consumption and accumulation and manage its stocks rationally. The system also allows remote calibration of all silos, further reducing costs and staff time on site. The system is using technological equipment and industrial controllers that allow monitoring silo filling, the occurrence of excess pressure and reduce the risk of dust release into the atmosphere. The system is scalable and can be further modified to control a large number of silos. In accordance with the proposed concept, RCWDS provides the optimum level of automation in the collection and processing of information for generating control signals and transmit them without loss and distortion to the actuators in order to achieve the most efficient warehouse operation cement.
Capacity of merging areas of multi-lane roads with two-lane entrance ramps
Authors: Kostsov A V , Tanatova A M
Published: July 2021

The discrepancy between transport demand and supply in the largest cities of the Russian Federation determines the need to create urban high-speed roads on their territory. Currently, there is no data on the capacity of sections of multi-lane road junctions with two-lane exit ramps, taking into account traffic conditions in large and major cities of Russia. The article presents the results of studies of the throughput of such sections of interfaces. The research was carried out using simulation methods after calibration of the model taking into account traffic conditions on the roads of the largest cities of the Russian Federation. The obtained research results are recommended for a reasonable assignment of the type of conjugation of two-lane exits with multi-lane highways on the territory of large and largest cities in Russia.
Application of digital technologies at road monitoring
Authors: Fotiadi A A , Zhustareva E V , Bochkarev V I , Gnezdilova S A , Partsevsky E D
Published: July 2021

Largely, the condition of the road network determines the economic and social development of any country. Annual monitoring of roads and analysis of their condition allow identifying in advance the sections where repairs are needed. In order to develop a correct and effective repair strategy, it is necessary to be able to analyze large volumes of road monitoring data. Therefore, the development and introduction of specialized software into practice are required for gathering, storing, processing and analyzing a great amount of data. The paper examines current specialized software developed by the specialists of the Department “Construction and Maintenance of Roads” of MADI (software products: ProfORG and Vsteets2) to process road monitoring data. This software makes it possible to record, store, process and analyze information using the DVS-3 road mobile laboratory. The article presents the research results of changes in the longitudinal and transverse roughness of the pavement surfaces performed using the ProfORG and Vsteets2 software.
Methodology and examples for assessing the environmental performance of certain road traffic management measures
Authors: Shelmakov S V , Grigoreva T U
Published: July 2021

The article describes the methodology for assessing the impact of road traffic management (RTM) measures on the environment and public health. As an approbation of the methodology, such measures as ban on the movement of heavy trucks, ban on the movement of cars worse than the third ecological class and organizing the movement of non-motorized transport (NMT) are considered. Assessment of these measures impact on the environment was to provide an assessment of the pollutant emissions by the transport flow, the maximum and annual average ground-level concentrations of pollutants at the adjoining territory, the traffic flow noise characteristics (TFNC) and the equivalent sound levels at the adjoining territory. These estimates formed the basis for calculating public health risk indicators. Studies have shown that the greatest efficiency can be provided by measures to organize the movement of NMT and ban on the low environmental classes’ vehicles movement. It is also shown, that in addition to the traffic flows characteristics, specific features of the territory under consideration also have a significant impact on the results.
Distributed generation in small-scale power generation. Search for energy-efficient solutions by automation of complex power systems
Authors: Golubchik T V , Kulikov A S , Taratutin D Y
Published: July 2021

The Paper presents data on the control of a generating set from an external source in parallel operation with the network. An experimental study was carried out on the example of a real generator set that provides a production facility with electricity. The economic feasibility of the simultaneous use of several sources of electricity is considered. The advantages and disadvantages of usage a generator set for parallel operation with the mains are considered. Considered solutions for the automation of complex systems in the small power industry.
Methodology and results of experimental studies of precision weighing systems of refueling complexes of upper stages and spacecraft of space rockets
Authors: Sova A N , Shulga V M , Valyaev O A , Zolotoy S A , Loginov A A
Published: July 2021

This article presents the main provisions of the new methodology, scientific and methodological approach and the results of experimental studies of precision weighing systems of refueling complexes of upper stages and spacecraft of space rockets. The article presents the following results of experimental studies of precision weighing systems: experimental substantiation of the provisions and conclusions of the metrological model of the refueling complex; experimental confirmation of the metrological characteristics of weighing devices of platform scales and platform two-channel scales in terms of weighing the delivered doses; experimental determination of the actual dose delivery error according to the indications of platform scales and two-channel platform scales with the supply of propellant components from transport and refueling containers; experimental testing of PC software in order to identify possible errors, as well as to make possible adjustments to the software for more accurate tracking of the main refueling operations; selection of optimal values of low flow rate for a more accurate cutoff of the dose and practicing the operator’s actions at the stage of the cutoff operation; determination of cutoff errors based on statistical processing of experimental data. The article also presents in detail the experimental unique scientific installation created by the authors, identifies the directions of its practical application in testing new weighing systems, in research work and in the educational process.
Technology for the production of modifying additives for concrete and asphalt concrete
Authors: Sukhanov A S , Kolosov A D , Kondrat’ev V V , Kononenko R V
Published: July 2021

The article presents the results of the development of modifying additives for concretes and asphalt concrete, consisting of spherical SiO2 and fulleron, extracted from silicon production waste. The use of these additives can reduce the destruction of asphalt concrete pavements, increase water and frost resistance. The proposed technology is energy- and resource-saving, converting metallurgical production wastes into the class of “associated mineral raw materials” and improving the environmental situation in regions with the presence of metallurgical industries. The paper presents studies of the feedstock and characteristics of waste gases of silicon production, the characteristics of the main technological equipment for the production of modifiers, the instrumental-technological scheme of the production process, the chemical composition and quality indicators of the resulting spherical silicon dioxide. The order and relationship of the processes that make up the technology of the associated additives based on production of silicon have been determined. The economic effect of the use of these modifiers in asphalt concrete pavements is achieved by increasing the durability and increasing the turnaround time.
Mixture substantiation of the powder composition for bearing units seats restoring of rolling bearings
Authors: Lyakhov Yu E , Zorin V A
Published: July 2021

The article substantiates optimal and most promising composition of a powdery thermoplastic composite polymer material used to restore worn-out rolling bearing units seats with combination of electrostatic and vibro-vortex coating methods. A laboratory installation for applying and forming coatings by a chamber electrostatic method is presented, with the help of which coatings were applied to steel 45 and AL-4 aluminum samples, after which they were melted in an oven at a temperature of 220 °C for 10 minutes. Based on the studies carried out, the optimal composition of the powdery polymer composition was determined: epoxy oligomer-32 … 40 %, powdered glass fiber-9.8 … 11.6 %, the rest-polyamide 12. At the same time, the coatings obtained from this composition on aluminum alloys substrates have insufficient adhesive strength. Therefore, the search for ways to increase it is relevant, and the solution of this issue will create a reliable technology for restoring rolling bearings seats.
Formation of minimum social standards in the field of public transport services for the provinces of Syria
Authors: Othman D M , Roshchin A I
Published: July 2021

The problem of planning public transport in most Syrian cities is an essential problem since until now almost no one has addressed it. The reasons for this are the lack of adequate information about volumes of passenger traffic and the work of urban passenger transport, which affects on the quality of decisions made by the management of transport organizations, which, as a rule, choose either unsuitable systems for organizing urban passenger transport (UPT), or allow private operators to make their own decisions. Depending on the results of practical researches of passenger transportation in the province of Latakia, as well as after studying the social standards of different countries of the world, including the Russian Federation, authors have defined some parameters which that characterize the passenger experience before, during and after each trip. These materials have allowed to formulate recommendations in the field of public transport passenger service in the form of minimum social standards. These standards should become the basis for Improving public transport services for passengers not only in Latakia province, but also in Syria as a whole.
Simulation of the force factors causing engine idling to vibrate
Authors: Safronov P V , Alekseev I V
Published: July 2021

The article provides a diagram and a description of the physical reasons that cause the engine to vibrate on the suspension at idle. The substantiation of the assumption about the inertial nature of these reasons is given. The main dependences for modeling the force effects on the engine casing at idle modes are given. The above theoretical aspects of modeling oscillations at idle speed are confirmed by the results of experiments to determine the influence of the moment of inertia of rotating engine parts on the amplitude of its oscillations on the suspension.
Assessment of the ecological and social potential of the organization of ecological zones to ensure sustainable transport development of territories
Authors: Donchenko V V , Shelmakov S V , Sharov M I , Lobikov A V , Chizhova V S
Published: July 2021

The article presents the results of an assessment of the impact on the environment and public health of measures to prohibit entry into a certain territory of the city of cars belonging to low environmental classes (“ecological zone” or “ecozone”). When justifying the choice of the city on the example of which the research was conducted (Novosibirsk), both environmental and socio-economic aspects were taken into account. The assessment of the environmental impact of the ecozone organization consisted in modeling traffic flows on the road network before and after the organization of the ecozone, estimating the emissions of pollutants from the totality of traffic flows, calculating the maximum and average annual surface concentrations of the considered pollutants on the territory of the ecozone. Based on the calculated average annual concentrations of pollutants, characteristics of the population density living in the ecozone, and scenarios of its interaction with pollutants, public health risk assessments were carried out before and after the organization of the ecozone. Studies have shown that the change in gross emissions of major pollutants during the organization of the ecozone in Novosibirsk will be 40…60%. Ground-level concentrations of these pollutants will decrease by about the same amount. Carcinogenic and non-carcinogenic risks to the population will be reduced by about half.
Navigation system with STV driver assistance function
Authors: Gaevskiy V V , Ghith S
Published: July 2021

The article deals with the problems of application of modern driver assistance systems on single-track vehicles (STV). The design features of the STV that prevent the installation of such systems are presented. Variants of a motorcycle entering a turn are considered, with concerning the gyroscopic moment of the STV wheels and the causes of situations in the turn. A new navigation system with a driver assistance function with an analysis of its operation and advantages is proposed.
Modeling of diesel structure-borne noise in an unsteady operating mode
Authors: Shatrov M G , Yakovenko A L , Alekseev I V , Bogdanov S N , Glazkov A O
Published: July 2021

The article considers some aspects of the modeling of the working process and structure-borne noise of a diesel engine in a transient mode. The main factors that cause differences in the diesel working process from similar stationary modes are described. A method for calculating the structure-borne noise from the diesel working process at the transient mode is presented. A study of the noise of a 6-cylinder (S=10.7 cm, D= 12,4 cm) diesel engine during acceleration was performed. The results of calculations showed that the noise of the 6-cylinder diesel engine is 2… 3 dB higher in the entire range of engine speeds compared to similar speeds in steady-state for diesel full-load characteristics.