bluuebunny/crossref_metadata_2025 huggingface dataset:
Jakarta-Bandung High-Speed rail transportation project: facts and challenges
Authors: Purba Aleksander , Purba John Tampil
Published: October 2020

There are several factors that determine the success of high-speed operation. The first and most important is levels of ridership. The aims of this research is to examine whether level of ridership sufficient to cover its costs. Based on long experienced of Asia and Europe it is crucial to ensure level of ridership needed to justify the cost of high-speed systems similar to those in other countries range from eight million to ten million riders per line in the first year. However, given the current ridership level of existing conventional rail, on-going HSR project is unlikely to be able to achieve a level of ridership sufficient to cover its costs except a huge amount of highway travellers shift modes to high-speed to avoid driving in congestion and a significant percentage of induced traffic along the HSR line in a way that uses the high-speed services.
Peculiarities of container terminal functioning in delivery chains
Authors: Ilesaliev I I , Makhmatkulov S G , Abduvakhitov S R
Published: October 2020

The purpose of this article is to study the container terminal as a complex technical system. The object of study is a container terminal. The subject of the study is a functional study of the container terminal at the junction of road and rail transport. The research methodology is based on the Markov random processes scheme. An example of a method for determining the number of reach players is given.
Architecture of managing big data of mixed transportation of passengers in aglomerations
Authors: Zhuravleva N A , Poliak M
Published: October 2020

The aim of this study is to develop a big data architecture that can provide the formation and management of competitive mixed passenger traffic in agglomerations in real time, taking into account the optimization of their cost, speed and new services. The work is based on studies of development trends of transport systems in agglomerations (SmartCitiesWorld); analysis of the methodology and use of systems for managing relational databases of structured data, as well as non-relational databases, information processing experience AIIM. For the analysis of passenger flows and decision-making on optimal routes, spatial databases OGS that implement standards have been used. The study substantiates the conclusion that the Big Data technology, implemented according to the cascade principle of information support for the transportation process, ensures the growth of monetization of all its components (transport infrastructure, vehicles and their management system). On this basis, a big data architecture was built, which implies the sharing of structured and unstructured data in the management of passenger traffic in agglomeration. This architecture made it possible to take into account the influence of the most important changes in the agglomeration on the mobility of its population and to optimize the financial performance of transport organizations due to the competitiveness of the allocated mixed routes.
Development of artificial intelligence as a modern business technology using the transport industry as an example
Authors: Romanova N , Kakhrimanova D , Semenova A , Safronova A , Belyaeva E
Published: October 2020

The article is devoted to the development of artificial intelligence, which is a form of various technological solutions and methods that can create programs in the likeness of human intelligence. The role and importance of artificial intelligence in modern business. The directions in which artificial intelligence and machine learning are developing are considered. The article notes the difficult moments associated with the creation of conditions (legislative framework, infrastructure, motivation of entrepreneurs, etc.) for the introduction of artificial intelligence in business. The article presents an assessment of the results of the introduction of artificial intelligence in the global and domestic business. Since technologies such as artificial intelligence and machine learning, which are important for the modern world, are attracting increasing attention, the article discusses the introduction of artificial intelligence in such a dynamic industry as the transportation industry. Considering the practice acquired by Western companies in the field of innovation and digitalization, it is possible to predict the possibility of using artificial intelligence by Russian companies in those industries where it is difficult to compete without the introduction of robotics. To enhance the process of creating and implementing artificial intelligence in Russian business, it is important to know and be able to evaluate the problems that hinder the development of new technological solutions. In this regard, the article discusses the barriers to the active implementation of artificial intelligence in the transport industry.
Forecasting the resource of mechanical system by the Theory of Catastrophes
Authors: Seregin Dmitry , Zorin Vladimir
Published: October 2020

The article considers the formation of a mathematical model for changing the technical state of a mechanical system using the Theory of Catastrophes. During the operation of the mechanical system, failures gradually accumulate, causing a decrease in working capacity and machine failure. The Theory of Catastrophes allows developing models for changing the technical condition of a mechanical system for various operating modes and operating conditions. In the field of the space of technical states of a mechanical system containing critical features, the coordinates of the point of the limiting state and possible failure of the part are determined.
Reliability forecasting for optimal planning of measures for maintenance of security systems of transport infrastructure facilities
Authors: Tsarkova E , Belyaev A , Churakov D , Andreeva E
Published: October 2020

The paper studies the methods for predicting the reliability of technical security equipment located at transport infrastructure facilities. The methods of determining the probability of the state of readiness of technical systems with various combinations of parameters of the maintenance system are considered. The automation capabilities are demonstrated in the study of the effectiveness of technical security equipment based on the analysis of their tactical and technical characteristics.
Modeling and testing of three-point bending of rectangular hollow sections for vehicles and highway guardrails
Authors: Kukhar V , Sahirov Y , Klimov E , Marchenko I , Nahnibeda M
Published: October 2020

Steel hollow sections are common for transport engineering, vehicles, highway guardrails. The special requirements for strength and stiffness are determined by tests. The three-point bending test experimental and FEM research were carried out on steel rectangular hollow sections (RHS) with a cross section of 40 mm × 50 mm, manufactured in two ways: (a) by cold bending of steel strips on roll-forming mill in semi-closed section with a longitudinal gap of 0.5 mm between the edges formed on a 40 mm web (B-RHS); (b) similar cold roll-forming to the closed section and welding with a longitudinal weld along the web middle of 50 mm (BW-RHS). As a result, the graphs and analytical equations for relating the force (P) and deflection (f) at load on 50 mm and 40 mm webs were obtained, and revealed the advantages of bent-welded sections (BW-RHS) by stiffness and strength. FEM was performed using the SolidWorks CAD/CAE system for various RHS wall thicknesses (t = 1.93 mm, 1.84 mm and 0.7 mm). It is shown that the BW-RHS design increase the stiffness by at least 50%, reduce the wall thickness by 61.9% while maintaining the same stiffness and ensuring the high strength indices for the case of least loading on the larger web, i.e. the maximum stresses in the RHS webs will be 2.33 times less than the yield stress of low-carbon steel.
Formation of optimal structure and properties of automotive pearlite steel during cold processing
Authors: Filippov Aleksey , Pachurin German , Mukhina Mariia , Smirnova Zhanna , Chelnokova Elena
Published: October 2020

Special requirements for structural and mechanical properties are applied to core fasteners manufactured on cold-forming machines made of automotive pearlitic steel. Mill products come as an original unit to manufacture various fasteners of hot-rolled steel, which can not be used for forming hardware due to the poor quality of the structure and surface layer. Therefore, the calibration rod undergoes intermediate heat treatment before drawing. In addition, products of strength grade 8.8 and higher, obtained from alloy steels on cold-forming machines, are quenched during tempering, which often leads to decarburization, cracking and bending of finished products, which increases the labor intensity, energy intensity and, consequently, the final cost. The article suggests a method for producing rolled products from automotive pearlitic steel 35Cr and 38CrA, including an isothermal process that excludes full annealing, quenching when tempering rod-shaped products and preventing decarburization, risks and curvature. The design, caused by passing through the drawing die, strengthening the surface by reducing and rolling the thread, provides mechanical properties of bolts and studs M8 strength grade 8.8 and 9.8.
Practical methods for the experimental determination of the mechanical characteristics of cement stone under compression
Authors: Lobanov D , Strungar E , Kurbatov Y , Zubova E , Wildemann V , Kashevarova G
Published: October 2020

In this work, we propose practical methods for the experimental study of the mechanical characteristics and staging of damage accumulation of cement stone based on the joint use of modern testing equipment and a non-contact optical video system for analyzing displacement and deformation fields, as well as a system for recording acoustic emission signals. In the framework of these practical methods, compression tests of cement stone samples of various shapes and geometrical sizes were carried out. The diagrams of deformation and application of loading have been obtained, the mechanical characteristics have been determined, and the staging of damage accumulation in a cement stone has been analyzed. We have received a conclusion about the optimal shape of samples of cement stone, which can be used to determine the prism strength, elastic modulus and Poisson’s ratio using the proposed practical methods.
Salt flux compositions for reprocessing and producing Al-Mg-based alloys and composites
Authors: Suzdaltsev A V , Nikolaev A Yu , Smirnov A S
Published: October 2020

Al-Mg alloys and composite materials based on Al-Mg alloys are widely used in various fields due to their unique characteristics. In this paper, compositions of salt fluxes for processing alloys, as well as for the synthesis of Al-Mg-based composites, are thermodynamically justified and experimentally tested. The NaCl-KCl (chloride-fluoride flux) with MgF2 additives is recommended for further studies.
Coating effect on thermal-physical and corrosion characteristics of ultralight Mg-based alloy
Authors: Krit B L , Wu R Z , Morozova N V , Kondratsky I O , Medvetskova V M
Published: October 2020

Due to its unique properties, magnesium alloys at present are widely used in aircraft and defence technologies, despite the significant drawback as low corrosion resistance. The most effective method of alloys protection is micro-arc oxidation (MAO). But firstly, the alloys oxidation has a number of difficulties, and secondly, the ceramic coatings have an effect on thermal-physical characteristics of modified material. The presented report devotes of the developed technological mode of a protective coating forming on the ultralight alloy Mg-8Li-1Al-0.6Ce by the MAO method. The role of cathodic polarization at the treatment was mentioned. An integrated assessment of the ability to thermal conductivity and corrosion resistance of the modified alloy was made. Despite the relatively small thickness and the presence of pores, the resulting coating provides sufficiently high corrosion resistance; the formed coating slightly (not more than 5%) reduces the thermal conductivity of the ultralight Mg alloy.
Surface quality formation at polymer composite details’ abrasive processing
Authors: Tamarkin Mikhail , Tishchenko Elina , Azarova Anna , Butenko Viktor
Published: October 2020

The article presents the results of studies of the process of abrasive processing of parts made of polymer composite materials. Special features of processing of polymer composites, technology of production of preform by hydroabosive cutting are described. Studies have been carried out and stages of preparation of a part made of polymer composite material for “gluing” operation have been described. Dependencies for determination of surface roughness during hydroabrasive cutting of polymer composite material are given. Studies have been carried out to achieve the necessary surface roughness when gluing blanks. A curvature is given describing the surface roughness, which is necessary to achieve a reliable adhesive connection. Results of theoretical and experimental studies of hydroabrasive cutting process are presented. Technique of the execution, applied tools and equipment are described. The results of theoretical and experimental studies were compared. Their high convergence has been established. The results of experimental studies on preparation of parts from polymer composite materials for gluing are presented. Abrasive tool, processing modes are selected. Design method for abrasive processing of parts made of polymer composite materials is proposed.
Mobile parks of construction machinery
Authors: Tuskaeva Zalina
Published: October 2020

Research subject: mobile parks of construction machinery. Objectives: substantiation of multifaceted approach to questions of mobile parks formation and functioning. Methods and materials: Considering the linear nature of the certain part of the construction projects development, in order to rationalize the production organization, it is necessary to explain and develop a methodology for establishing mobile parks of construction machinery (MPCM). The methods for stationary parks build-out are widely known, but the specifics of linear construction and new functional conditions require the use of economic and mathematical methods close to the actual production conditions, taking into account the probabilistic nature. Results: a phased, step-by-step approach to the formation of mobile parks of construction machinery with an appropriate feasibility is proposed. Conclusions: a complex, systematic approach to the development of mobile parks in construction will allow the task to use in practice.
Methodology for evaluating energy-saving technical solutions of impact machines and equipment
Authors: Abramenkov D E , Popov N A , Abramenkov E A
Published: October 2020

The paper proposes a method of sequential exclusion at the stage of designing feature elements in known and synthesized pneumatic impact mechanisms in order to select preferred constructive solution of machine mechanism for destruction of mountain ranges in preparing the bases for construction of buildings and structures. The method involves a phased analysis of several variants of mechanisms at the same time with exception of the same structural features, elements that have the same effect on the work process and resource mechanisms. Thus, only original compositions remain that characterize distinctive qualities of technical solution of the pneumatic impact mechanism variant corresponding to its intended purpose.
Distribution of the relative frequency of immersion of pea grains in the liquid depending from the height of transportation
Authors: Saitov V , Farafonov V , Saitov A , Malykh T
Published: October 2020

One of the main ways to protect seed material from various diseases is treatment with chemicals. The most effective way to protect seeds from various diseases is wet etching with the simultaneous release of grain impurities. To develop a device for cleaning and etching seeds by wet density, studies were conducted to determine the minimum height of the loading hopper relative to the surface of the water solution of the etcher when transporting spherical grains to it in order to ensure that the surface tension forces are overcome. Practical experiments were conducted on throwing single grains of peas of the Vita variety (spherical grain) with a humidity of 14% into a liquid with a density of ρzh = 1000, 1090 and 1150 kg/m3. Sodium chloride salt (NaCl) was used to change the density liquid. To obtain more reliable information, the experiments were carried out in three-fold repetition. The temperature of the surrounding air and liquid of different densities ρzh was 20°C. It is established that when single pea grains fall 100%, the immersion in water (ρzh = 1000 kg/m3) occurs at a transport height h of at least 12.0·10−3 m. In the case of 100% immersion of pea grains in an aqueous solution of sodium chloride (NaCl) with a density of ρzh = 1090 and 1150 kg/m3, the minimum transport height h is 15.0·10−3 and 18.0·10−3 m, respectively.
Analysis of noise sources in the acoustic field of a combine harvester’s rotating thresher drum
Authors: Stepanov Valentin , Polushkin Oleg , Kireev Sergey , Korchagina Marina
Published: October 2020

The main goal of the current research is to analyze the acoustic field of the threshing unit of a combine harvester. This research implements a numerical simulation of gas flow based on the Navier-Stokes equations with discretization of equations by the finite volume method. The finite element mesh used in the idealized model allows one to adequately analyze noise sources up to a frequency of 2500 Hz based on the broadband noise source models of Curl and Proudman. In this paper, the analysis of the flow around the threshing unit at two rotation speeds of 500 rpm and 980 rpm was performed in order to point out elements contributing the most to the noise environment of a combine harvester in operation. As a result of the analysis, the spectra of maximum acoustic pressure and intensity were obtained. Based on this data, there were obtained design refinement areas and areas of increased technological control of a typical thresher drum for the practical implementation in the noise reduction strategies.
A Mathematical Model of the Dynamic Interaction of a Locomotive’s Wheelset and Track
Authors: Buynosov A , Timukhina E , Argannikov B , Antropov S
Published: October 2020

The interaction of the wheel and the rail is the physical basis for the movement of rolling stock on railways. In order to reduce the wear rate of wheel sets and rails, it is necessary to create a mathematical model for the interaction of the “wheel-rail” pair, on which one could look at various methods to reduce catastrophic wear. Currently widely used mathematical algorithms with many degrees of freedom of dynamic interaction of a pair of “wheelset rolling stock – railway track” have a number of disadvantages that affect the accuracy of the calculation results. It is necessary to first build the dynamic equations of dynamics in a basic fixed coordinate system, and then introduce a transformation into local coordinate systems. The algorithm proposed by the authors for constructing dynamic equations, taking into account the inclination and elevation of the outer rail over the inner rail, and the speed of the portable movement of the center of mass of the wheelset, allows to avoid all kinds of errors. In this paper, we describe an algorithm for constructing dynamic equations describing the joint motion of a wheel pair and a rail track, as well as an algorithm for solving the dynamic contact problem. The equations of translational and rotational dynamics of a wheel pair of a railway rolling stock (locomotive), the equations of motion of interacting bodies and communications are constructed. Based on the described mathematical algorithms, programs have been developed for calculating the forces of dynamic interaction in the wheel – rail system.
Specific aspects of calculating electrical energy losses in electricity networks
Authors: Tsygulev Nikolay , Khlebnikov Vladimir , Voronina Yekaterina
Published: October 2020

The paper present modes of operation of 10(6) kV distribution networks, which are determined by the loads of consumers. The network scheme is based on an open circuit, which allows you to perform calculations for each 10(6) kV distribution line (feeder) separately. The calculation of power losses in the electric network is carried out by the method of average loads. The paper determines the integral characteristics of the operational parameters of the head branch, determines the parameters of the equivalent power loss of the feeder equivalent circuit, and the equivalent circuit determines the energy loss in the feeder. The paper compiles the equivalent circuit of the considered network section, calculated the parameters of the equivalent circuit elements and determines the total power loss in all linear sections. The paper presents an algorithm for calculating the steady state using the example of a feeder and shows the sequence of calculation of current distribution in the branches of the equivalent circuit.
Synchronous generators for traction mechanisms
Authors: Fedorov T
Published: October 2020

This article shows the principle of operation, experimental characteristics, comparison with other types of generators, functional diagrams of an electric generator set based on a field regulated reluctance machine. Attention is drawn to the high specific performance and favorable performance characteristics of these power generating sets. The simplicity of the design ensures high manufacturability of the electric machine, the non-contact design in combination with a “cold” winding-free rotor increases the reliability of the bearings and the entire machine, the ability to make the rotor massive (the rotor poles and the shaft are from one solid billet) significantly increase it strength and lateral stiffness. Also it allows obtaining high angular velocities and large moment overloads. Small control powers along the excitation circuit with a sufficiently high speed of this channel contribute to the achievement of high accuracy of maintaining a given voltage at favorable mass and dimensional parameters of the electric power plant.
Machining quality improvement and noise reduction of vehicle gears
Authors: Bagaiskov Yu
Published: October 2020

Gear honing is a method to ensure high quality of vehicle gear teeth lateral faces used primarily for batch and mass production. Gear hones are used for this operation. Both the service life of vehicle systems and the vehicle noise level depend on the gear’s parameters accuracy and machining quality. Effectiveness of using gear hones depends mainly on the hardness and elasticity modulus of their composite material. In terms of the elasticity modulus, gear hones can be hard and elastic, depending on the bonding agent type. Some increase in roughness of the gear teeth lateral faces was observed at decreased hardness of the hard gear hone material due to accelerated pitting of abrasive particles. As the gear hone material elasticity degree increased with simultaneous hardness decrease, roughness decreased significantly, even at an increased abrasive grit size, as a result of alignment of the abrasive grain peaks along the supporting surface, extended contact time of the grains and machined surface, contact pattern area and fullness of machining; a favorable grid of machining marks is available. Though removal of such coarse irregularities as dents and burrs by hard gear hones is more efficient. Overall reduction of the noise level of vehicle gears is observed, as well. Correspondence of the obtained experimental results to the suggested theoretic criterion of quality and machining fullness.
The necessary conditions for the safe operation and mobility of the low-tonnage road train with the maximum load up to 3.5 tons under critical traffic indicators
Authors: Godzhaev Z A , Godzhaev T Z , Kalinin Ya V , Korolyash V A , Ju Soloveva O
Published: October 2020

This article focuses on the conditions for the safe operation of low-tonnage road trains (hereinafter LTRT) with trailers which are platforms with load capacities up to 3 tons that transport agricultural machines, mini-plants, and other equipment as well as tourist cabins. There are numerous risks in transporting such trailers that can occur due to a small turning radius or emergency braking. To assess the results of the research and experiments on the safe operation of LTRT with trailers, we used the works of the following scholars: Godjaev, Izmaylov, Komarov, Korolyash, Volchkov, Maloletov. As a result, we developed and tested a mechanical flexible coupling device under the leadership of the “Federal Scientific Agroengineering Center VIM” and the Volgograd State Technical University’s Department of Road Transport. Certificate No 2018137360, 22.10.2018. Further research can help define critical indicators for the safe operation of LTRT with load capacities up to 3.5 tons, so calculate the speed limit at critical turns, emergency braking, and reversing.
Psychological determinacy of communication styles of aviation industry students
Authors: Khokhlina O , Pomytkina L , Lych O , Gorbenko S , Kazak A
Published: October 2020

The article presents the results of a theoretical and empirical study of the problem of style peculiarities of the human life activities, namely the styles of communication of student youth aviation industry as a specific form of human activity, the essence of which is the interaction of partners, subject-subject relations. The style of life activities is considered as a way of existence of a person characterized by originality; it covers the entire system of human being, its internal and external manifestations, and provides activity of a certainty in the characterization and predictability of behavior in a wide range of situations. The authors proceed from the assumption that enhancement of the subject’s life activity requires taking into account the existing and expanding (or forming), in the given direction, style peculiarities of the activity in mutual connection to its personal qualities. The article reflects the basic theoretical foundations of the conducted research and the empirical data obtained on students’ communication styles and their connection with the mental qualities of the personality. It is revealed that modern student youth is characterized by use in communication of a wide range of means, among which, according to various classifications, prevail styles such as: altruistic, cooperative, collegial, liberal, dialogical, compromise, whichintheir content indicate the orientation of the subject on partner, cooperation with him, finding a common solution, mutual respect, etc., demonstrating the ability to communicate. The data obtained also indicate the need for students to expand the irarsenal of communication toolsanduse the ircap abilitiesin a variety of conditions and requirements of life activities. The study proved that there is a mutual connection between the communication styles with the mental (personality) qualities of students: personality qualities may lead to an inclination for a particular style of communication, and vice versa. The same testifies the possibility of their formation of certain styles on the basis of development (or creation) of corresponding personality qualities; extension of the same style peculiarities of interaction, the use by a person of specific styles in life will promote the development of personality’s associated with this mental formations.
Digitalization in the transport industry: development perspective
Authors: Borisova E V , Pyataeva O A
Published: October 2020

Analyzing the current state of digitalization in the transport industry in Russia and abroad, it can be revealed that various digital technologies are currently being introduced facilitate business transactions, as well as increase their efficiency. The topic of this article is becoming more relevant due to digital revolution which can stimulate economic growth and development. Therefore, the study of issues related to the digitalization, including the study and determination of trends in the transport business, became the purpose of this research. This goal was achieved using methods of analysis, inference, generalization, as well as statistical methods. As a result of the research the authors has observed several factors that affect the development of the transport and logistics system in Russia. In fact, trends in the transport industry were formulated and conclusions about the directions of decision-making in transport sphere were made. In this research the authors highlighted the problems and advantages associated with making such decisions, and provided examples of their successful implementation. Based on the research data the authors were made a proposal to pay special attention to the training of specialists who are able to implement new tasks. It will contribute to faster and more competent involvement of digital technologies, strengthening the company’s position in the competitive environment.
Gas transport organization management using statistical control methods and information technologies
Authors: Bolotokov A S , Lisenkov A N , Yasashin V A
Published: October 2020

The methodology and experience of researching the activities of a gas transportation organization (GTO) as a management object in the development of its quality management system using statistical control methods and information technology tools - the MC “Tracking system” are considered. Based on the data obtained using the system for the GTO under study, an analysis of the causes and sources of car downtime, their distribution in areas of responsibility (manufacturing plant, Russian Railways, technological zone, trader and others), as well as distributions within such zones, were made. Using control cards, control and normalization of the delivery dates of products and their tolerance values, in accordance with the international standard (the “three-sigma” rule), ensuring the delivery time beyond the tolerance limits in no more than three cases out of a thousand of such deliveries, were carried out. Based on the results of the analysis, recommendations were formulated for the modernization of the GTO activities to reduce costs caused by the downtime of cars. According to the data obtained, when comparing the activities of the GTO for 2017 and 2018, the effect was expressed in a reduction in costs of more than 24 million rubles.
Transport control and monitoring systems as the basis of national economic security
Authors: Dmitrieva G S , Rodionov A S , Danilina M V , Pimenov N A , Buslaev S I
Published: October 2020

Transport is one of the main tools in solving major political and economic tasks in ensuring the country’s defense capability. Management and monitoring of transport serve as an information basis for ensuring the functioning and development of the socio-economic system. In the modern world, transport management and monitoring of stable and long-term socio-economic transport development are of particular importance. This article discusses such concepts as transport management and monitoring, economic security and ensuring counteraction to its threats, threshold values of indicators of economic security and various approaches to their formation, innovative activity as one of the mechanisms for ensuring the development of the Russian economy.
Research of problems of small businesses of transport and logistics
Authors: Keschyan Nadezhda
Published: October 2020

The article explores the problems faced by entrepreneurs in the transport and logistics market. In order to identify problems in the development of support for small businesses that do business in the field of transport and logistics, a sociological study was conducted. The survey was conducted, 445 respondents took part in the survey. Respondents are representatives of small businesses in the field of transport and logistics who work in the Krasnodar Territory. The questionnaire consisted of 17 questions. Most of the questionnaires were distributed electronically using the database of the municipal administration. The results include: an assessment of the quality of official information on measures to support small business in the field of transport and logistics, placed in the public domain according to the level of accessibility and understandability; assessment of administrative barriers in the field of logistics and transport; assessment of the activities of authorities in the field of small business development of the transport and logistics market.
Strategic Collaboration ICT in the online Transportation Services in Jakarta Area
Authors: Purba John Tampil , Samuel Sylvia , Purba Aleksander
Published: October 2020

The purpose of writing this paper is to contribute as an effort to explore the financial technology collaboration landscape used in online transportation applications that are now widely applied by a number of transport companies in Indonesia. Stability in Fintech business is the main foundation of sustainable digital transactions. Therefore this paper discusses these priorities in the issues of digitalization. Technological innovations in financial services are the result of meetings between drivers and customers. Then the customer’s preference is the respondent as “digital native” who interacts with the convenience, security, speed and cost of financial services the higher the demand. This study took 8 months with respondents who had used FinTech transactions daily in the Jakarta area. Here, use quantitative data analysis to present findings and discussions. It was found that; first, the adoption of the adoption of FinTech as a rapidly growing payment tool in economic transactions. Second, developing technology, with the presence of the internet, big data, cellular, and computing power, has become a clear driver of innovation in online transportation services. The conclusion is that the benefits of Fintech are very large in serving the community at this time for that business opportunities in this field are truly great.
Improving transport infrastructure in strategies to attract foreign investors to Africa
Authors: Pungnirund Bundit
Published: October 2020

The paper discusses the most recent African initiatives to attract foreign direct investment (FDI) through improving institutional environment and economy’s competitiveness in the context of regional transport infrastructure modernizing. The FDI role in public-private partnerships and implementation of large infrastructure projects in Africa, such as railways’ and seaports’ construction and modernization, is also considered. The author analyzes the prospects of increasing FDI inflows in Africa through regional transportation development (namely, through seaports and railway networks).
Optimization of the customs bodies’ communications as an instrument to facilitate transport flows in the Siberian region
Authors: Fomenko D S , Shmatkoy R N
Published: October 2020

The purpose of this paper is to disclose the mechanism for reproducing the communication optimization model of the customs authorities of the Siberian Customs Administration, which ensures the prompt elimination of contingencies in the operation of software operated by the customs authorities, which in turn will ensure compliance with customs operations and reduce the amount of downtime (delays) of transport funds. Methods of research that will let to achieve this goal are the analysis and experiment of a model for optimizing communications. This paper presents a practical implementation of the model for optimizing communications of the customs authorities of the Siberian Customs Administration, which allows considering an effective approach to eliminating emergency situations in the operation of software and ensuring compliance with the deadlines for customs operations. In connection with the launching of the Siberian Electronic Customs, in the region of activities of which the entire declarative mass of the Siberian region will be concentrated by 2021, the process of implementing a communication model under the conditions of the creation of the Siberian Electronic Customs is being considered. The statistical data of the filed declarations of goods to the customs authorities of the Siberian region for 2016 - 2019 are analyzed. It helps determiming the share of the load for each official working with declarations of goods and contingencies.
Logistics and transport as elements of sustainable development of territories
Authors: Kurbatova S M , Aisner L Yu , Mazurov V Yu
Published: October 2020

The article considers a number of aspects related to the essence of logistics and transport as elements of sustainable development of territories. The main directions of interaction between logistics, transport and sustainable development of territories are presented. The importance of creating technological and infrastructural reserves of the transport system to meet the needs of socio-economic development of the country is noted. The importance of an integrated approach to an effective solution to the tasks set by the concept of sustainable development with the help of the transport component is noted.
Production and logistics of goods in the Arctic zone of Russia
Authors: Fattakhov R V , Stroev P V , Morkovkin D E , Gibadullin A A , Isaichykova N I
Published: October 2020

The study focuses on the extraction, production, transfer, transportation and storage of goods in the Arctic zone. The issues of ensuring the transportation of goods to the Arctic zone and the movement of extracted goods and services from the Arctic are relevant and necessary for study. The study revealed the main problems that arise in the Arctic after the extraction and transportation of natural resources. Achieving the efficiency of production and transportation of goods and reducing the burden on the environment should be decided at the state level. At the same time, in order to increase the efficiency of production, production, transfer and transportation of goods, a model has been developed that will improve the efficiency of production and transport enterprises in the Arctic zone.
On the issue of security of land transfer from agricultural to industrial and transport use
Authors: Uskov V , Shariapova E , Pisareva N
Published: October 2020

The present paper raises the questions that directly relate to the contemporary development of national economy of the Russian Federation. The main orientations of the strategic development of Russia are enshrined in Decrees of the President of Russia “On the Strategy for the Economic Security of the Russian Federation for the Period until 2030” and “On Approving the Doctrine of Food Security of the Russian Federation”. Having analyzed the aforementioned documents, the authors came to a conclusion that the primary challenge for Russia’s economy today is the development of industrial and transport which is impossible without the expansion of a production areas. Growth of zones of manufacture entails the necessity to acquire supplementary areas, which often is carried out at the expense of agricultural lands. Rezoning of agricultural lands is regulated and strictly regimented by the legislation of the Russian federation. The paper describes an attempt to solve a conflict situation, which consists in the fact that agricultural lands are aimed at fulfilling a food program, while the food program demands the rezoning of lands including agricultural, which may lead to the decrease in production of agricultural goods. In the present paper, the authors make several proposals that will minimize security risks for national economy.
Investigation of improvement in stability and power conversion efficiency of organic solar cells fabricated by incorporating carbon nanostructures in device architecture
Authors: Subramanyam B V R S , Mahakul Prakash Chandra , Sa Kadambinee , Raiguru Jagatpati , Mahanandia Pitamber
Published: October 2020

Carbon nanotubes (CNTs) along with reduced graphene oxide (RGO) are synthesized using modest methods and their composites with the polymers PEDOT:PSS and P3HT are prepared using an easy solution method. An attractive improvement in the composites’ physical properties with wt% increase of the filler material is observed, encouraging their applications in the fabrication of organic solar cells (OSCs). Using the composites in appropriate layers of the device architecture, OSCs have been fabricated by spin coating, and the incorporation of filler CNTs and RGO has been observed to result in considerable improvement in the power conversion efficiency (PCE) of all OSCs. To study the stability of the devices, the electrical properties of the OSCs have been periodically investigated in two different environments to understand the impact of both intrinsic and extrinsic degradation. The incorporation of filler carbon nanomaterials has been noticed to be successful in significantly prolonging the stability of the OSCs while maintaining the augmentation in PCE. For the best performing devices, the incorporation of CNTs and RGO has enhanced the PCE by 12.52% and 13.21% and improved the device lifetime by 37.31% and 43.23%, respectively, compared to the reference device. The results discussed in this report are greatly promising for the large scale consideration of a pioneering role of organic materials in numerous optoelectronic devices from a new and innovative perception assisted by the application of carbon-based nanomaterials.
On modular Harish-Chandra series of finite unitary groups
Authors: Norton Emily
Published: October 2020

In the modular representation theory of finite unitary groups when the characteristic

ℓ
\ell

of the ground field is a unitary prime, the

s
l

^

e

\widehat {\mathfrak {sl}}_e

-crystal on level

2
2

Fock spaces graphically describes the Harish-Chandra branching of unipotent representations restricted to the tower of unitary groups. However, how to determine the cuspidal support of an arbitrary unipotent representation has remained an open question. We show that for

ℓ
\ell

sufficiently large, the

s
l

∞

\mathfrak {sl}_\infty

-crystal on the same level

2
2

Fock spaces provides the remaining piece of the puzzle for the full Harish-Chandra branching rule.
Right atrial volume is a major determinant of tricuspid annulus area in functional tricuspid regurgitation: a three-dimensional echocardiographic study
Authors: Muraru Denisa , Addetia Karima , Guta Andrada C , Ochoa-Jimenez Roberto C , Genovese Davide , Veronesi Federico , Basso Cristina , Iliceto Sabino , Badano Luigi P , Lang Roberto M
Published: October 2020

Aims

The aim of this study is to explore the relationships of tricuspid annulus area (TAA) with right atrial maximal volume (RAVmax) and right ventricular end-diastolic volume (RVEDV) in healthy subjects and patients with functional tricuspid regurgitation (FTR) of different aetiologies and severities.

Methods and results

We enrolled 280 patients (median age 66 years, 59% women) with FTR due to left heart disease (LHD), pulmonary hypertension (PH), corrected tetralogy of Fallot (TOF), chronic atrial fibrillation (AF), and 210 healthy volunteers (45 years, 53% women). We measured TAA at mid-systole and end-diastole, tenting volume of tricuspid leaflets, RAVmax, and RVEDV by 3D echocardiography. Irrespective of TA measurement timing, TAA correlated more closely with RAVmax than with RVEDV in both controls and FTR patients. On multivariable analysis, RAVmax was the most important determinant of TAA, accounting for 41% (normals) and 56% (FTR) of TAA variance. In FTR patients, age, RVEDV, and left ventricular ejection fraction were also independently correlated with TAA. RAVmax (AUC = 0.81) and TAA (AUC = 0.78) had a greater ability than RVEDV (AUC = 0.72) to predict severe FTR (P < 0.05). Among FTR patients, those with AF had the largest RAVmax and smallest RVEDV. RAVmax and TA were significantly dilated in all FTR groups, except in TOF. PH and TOF had largest RVEDV, yet tenting volume was increased only in PH and LHD.

Conclusion

RA volume is a major determinant of TAA, and RA enlargement is an important mechanism of TA dilation in FTR irrespective of cardiac rhythm and RV loading conditions.
Greater Social Engagement and Greater Gray Matter Microstructural Integrity in Brain Regions Relevant to Dementia
Authors: Felix Cynthia , Rosano Caterina , Zhu Xiaonan , Flatt Jason D , Rosso Andrea L
Published: October 2020

Objective

Social engagement (SE) may protect against cognitive decline in older adults. We estimate associations of SE with gray matter (GM) microstructure in regions of interest (ROI) relevant to social cognition, among community-dwelling older adults.

Method

Cross-sectional analysis of 293 Health ABC study participants who underwent 3 Tesla magnetic resonance imaging with diffusion tensor and free from cognitive impairment was conducted. Linear regression models tested associations between SE index (marital status, not living alone, social activities, work, and volunteering) and mean diffusivity (MD) of GM ROIs, adjusted for age, race, gender, and education. Hearing and activities of daily living (ADL) difficulties were tested as confounders. Effect modification by gender was tested with interaction terms and stratification by gender.

Results

Higher SE was significantly related to lower MD (greater GM microstructural integrity) (shown as standardized estimate [p-value]) in left middle frontal gyrus-orbital part: −.168 (.005), left caudate nucleus: −.141 (.02), left temporal pole-middle temporal gyrus: −.136 (.03), right middle frontal gyrus: −.160 (.006), right superior frontal gyrus-orbital part: −.187 (.002), and right middle frontal gyrus-orbital part: −.124 (.04), when adjusted for demographic attributes. Associations were robust to adjustments for hearing or ADL difficulty. There was significant effect modification by gender for some ROIs, with associations only for females.

Discussion

SE is related to greater microstructural integrity of specific GM regions relevant to social cognition, that have described roles in dementia. SE may therefore be a useful preventive mechanism against loss of GM integrity in older adults.
Trends in Bacteremia Over 2 Decades in the Top End of the Northern Territory of Australia
Authors: Douglas Nicholas M , Hennessy Jann N , Currie Bart J , Baird Rob W
Published: October 2020

Background

Information on the local distribution of bloodstream pathogens helps to guide empiric antibiotic selection and can generate hypotheses regarding the effectiveness of infection prevention practices. We assessed trends in bacterial blood culture isolates at Royal Darwin Hospital (RDH) in the Northern Territory of Australia between 1999 and 2019.

Methods

 Species identification was extracted for all blood cultures first registered at RDH. Thirteen organisms were selected for focused analysis. Trends were examined graphically and using univariable linear regression.

Results

 Between 1999 and 2019, 189 577 blood cultures from 65 276 patients were processed at RDH. Overall, 6.72% (12 747/189 577) of blood cultures contained a bacterial pathogen. Staphylococcus aureus was the most common cause of bacteremia during the first decade, with an estimated incidence of 96.6 episodes per 100 000 person-years (py; 95% CI, 72.2–121/100 000 py) in 1999. Since 2009, S. aureus bacteremia has declined markedly, whereas there has been an inexorable rise in Escherichia coli bacteremia (30.1 to 74.7/100 000 py between 1999 and 2019; P < .001), particularly in older adults. Since 2017, E. coli has been more common than S. aureus. Rates of Streptococcus pneumoniae bacteremia have reduced dramatically in children, while Burkholderia pseudomallei remained the fourth most common bloodstream isolate overall.

Conclusions

 The incidence of S. aureus bacteremia, though high by international standards, is declining at RDH, possibly in part due to a sustained focus on both community and hospital infection prevention practices. Gram-negative bacteremia, particularly due to E. coli, is becoming more common, and the trend will likely continue given our aging population.