bluuebunny/crossref_metadata_2025_split huggingface dataset:
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

Abstract
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

Abstract

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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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.