bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of anomalous truth values on logical inference in VTF-logics as a basis for verification of rule-based systems
Authors: Arshinskiy L V , Arshinskiy V L , Dunaev M P , Nitezhuk M S 
Published: May 2021

Abstract
The paper is devoted to the problem of expert systems knowledge bases verification. The methodological basis of verification is logics with vector semantics in the VTF-logics form. The knowledge model is a rule-based system. The issues of algorithmization of contradictions and other problems detection are considered in the paper. Algorithmization is based on the characteristic features of in VTF-logics inference. It is shown that in the formalism under consideration, the anomalous truth of a small premise generates the same conclusion (a large premise is considered strictly true). Anomalies such as falsity, uncertainty, and contradiction are considered. The problems of reducing the computational complexity of algorithms are considered.
Potential of the railways of the multimodal transport network of the Eastern Siberia and Far East of Russia
Authors: Anisimov V A , Bogdanova L A , Morozova O S , Shkurnikov S V , Nesterova N S 
Published: May 2021

Abstract
The article notes the urgency of the problem of the formation and development of the regional multimodal transport network of Eastern Siberia and the Far East of Russia as a set of multimodal transport corridors. The enlarged functional structure of the design methodology for the integrated development of a multimodal transport network is presented. Using this methodology, the authors formulated the problem of designing the development of a regional multimodal transport network in Eastern Siberia and the Far East of Russia, gave a description of the proposed version of its appearance and the possible throughput of existing and new railways in the region under study. The options for the possible carrying capacity of the railway links of the network presented in the article represent an assessment of the potential of multimodal transport corridors, which is used to determine the options for the required traffic volumes along the network facilities.
A method that improves the safety states of technical means of control and management
Authors: Gromyshova S , Gozbenko V 
Published: May 2021

Abstract
The main focal points of improving the traffic safety management system are as follows. First, one must coordinate the interaction among all functional branches, their structural divisions and subsidiaries involved in the transportation process, based on common approaches to managing processes related to traffic safety. Second, one should implement the approaches and requirements that are congruent with international standards; to maintain a positive level of traffic safety culture through awareness of the importance and social responsibility of the holding employees when performing work that affects traffic safety, with simultaneous integration of mandatory and strict rules of conduct in all production processes. Third, one is to improve the regulatory framework. Train traffic safety is ensured at all stages of the life cycle of rolling stock, traffic support systems and infrastructure elements. Nevertheless, failures and malfunctions are detected during the operation. This article presents one of the methods for increasing the train traffic safety in the automation and telemechanics system.
Formation of algorithm of automatic parametric optimization of PI controller with variable parameters while using Internal Model Control
Authors: Kulikov V V , Kutsyi A P , Kutsyi N N 
Published: May 2021

Abstract
Known by its advantages, a proportional-integral controller (henceforth – a PI controller) with variable or switchable parameters, related to a class of controllers with a variable structure ((henceforth – variable structure controllers, VSC) that do not use a sliding mode, is applied to control an object in the automatic system with a sufficient delay, reducing the performance quality of standard controllers (integral, proportionally integral, proportionally integral differential). The specifics of building this controller makes it more difficult to use analytical approaches to the parametric optimization of the system, which defines the use of algorithmic methods. The present work uses a gradient algorithm, in which the gradient constituents are calculated with the help of sensitivity functions with their definite advantages. To obtain initial values of VSC adjustable parameters, an adjustment method of a standard PI controller based on the internal model controller (IMC) is used. The gradient algorithm of an automatic parametric optimization (henceforth – an APO algorithm) has calculated optimal parameters of VSC starting from the closeness of the output coordinate of the object to the reference process with a minimum of the integral quadratic criterion. The correctness of the calculated vector of the controller adjustment by the formed APO algorithm is confirmed by necessary and sufficient extremum conditions of the chosen optimization criterion.
Detailing the impact structure of the participants of the complex transport service
Authors: Zubkov V V 
Published: May 2021

Abstract
During the reforms underway in the railway industry, the consolidation of companies and vehicles, the formation of new models of transportation services is achieved through the creation and implementation of integrated high-tech information systems. In this case, a holistic approach to the effective management of the production system should determine the extent of their responsibility. The article illustrates the main aspects of quality management of customer service as one of the key factors of transportation company efficiency in the segment of freight transportation. The procedure of quality estimation of the transportation service is presented in the Target model of the complex transport service by each of its parties in the different transportation categories. Specification of the impact structure of the parties of the complex transport service on its quality level through calculation of a responsibility ratio has been made.
A technique of synthesis of unmanned aircraft control algorithms of a flat-symmetric scheme on the basis of the method of inverse problems of dynamics
Authors: Sizykh V N , Daneev A V , Bakanov M V , Daneev R A 
Published: May 2021

Abstract
The article discusses the development of non-traditional adaptive control systems for such a type of vehicle as an unmanned aerial vehicle based on the concepts of inverse problems of dynamics, adjacent to the class of absolutely stable dynamic systems. The paper proposes to use the idea of dividing spatial motion into isolated longitudinal and lateral motion (horizontal decomposition) to solve the problem of developing mathematical and information support for the trajectory control loop of unmanned aerial vehicles (AC), to synthesize a control algorithm by the method of inverse dynamics problems (OZD) and obtain analytical solution of the reference model. The relatively small tail surfaces of the unmanned aircraft lead to an insignificant mutual influence of the parameters in the longitudinal and lateral channels during the spatial movement of the aircraft, which makes it possible to accept the longitudinal and lateral channels of the aircraft movement as autonomous. The algorithm presented in the work can be considered as the mathematical support of the trajectory control loop of an unmanned aircraft. Based on the formulas given in the work, as well as mathematical dependencies that determine the optimization of the trajectory contour, a functional diagram can be built that determines the architectural appearance of a promising automatic control system for unmanned aircrafts.
Simulation of conditions for the occurrence and elimination of asynchronous mode in the power supply system
Authors: Afanasyev A P 
Published: May 2021

Abstract
This article discusses the phenomenon of a two-frequency asynchronous mode as the most typical and common in power systems. The analysis of methods of registration and elimination of the asynchronous mode and a description of their principles of operation of these methods are carried out. The conditions for the occurrence of an asynchronous mode are considered and analyzed, the main signs of the transition of an electrical network to an asynchronous mode are highlighted. On the basis of the RUSTab software package, an experiment was modeled that simulates the asynchronous mode and synchronous oscillations in the network section included in the IES of the East. The critical values of the parameters of the elements of the experimental network are estimated. The composition and parameters of the control action have been determined, which makes it possible to exclude the asynchronous mode without changing the network topology. The results obtained show the efficiency of using asynchronous mode methods based on the constructed model.
Checking the operation parameters of the traction power supply system with a long-term train schedule on the rated section of the railway line
Authors: Suslov K V , Akhmetshin A R , Astashkov N P , Olentsevich V A , Shtayger M G , Karlina A I 
Published: May 2021

Abstract
The handling of trains of increased weight and length, consisting of rolling stock with an axle load of 25 tons, and up to 27 – 29 tons in the future, is a difficult technical and economic task facing Russian Railways OAO today. A heavy train cannot be slowed down often, much less stopped, since this leads to a significant loss of energy. In the article, the authors considered the issue of strengthening the traction power supply system on the rated section of the railway line of the Eastern polygon in connection with an increase in the amount of cargo turnover by 2025. Based on the results of the traction calculation, the predicted values of the indicators were obtained. They are the total travel time of the train along the section of the railway line, the free running time of the train, the consumption of active and total electricity, the specific consumption of active and total electricity for each inter-substation zone of the railway line section. The operation parameters of the traction power supply system with a long-term train schedule on the rated section of the railway line are determined. The research results obtained by the authors made it possible to determine the limiting sections and objects of transport infrastructure for the handling of heavy-haul and long freight trains on the rated direction.
Calculation of operating modes of the traction power network system and the capacity of the 27.5 kV railway line section systems for batch train schedules
Authors: Suslov K V , Zatsarinnaya Yu N , Logacheva A G , Olentsevich V A , Karlina A I , Shtayger M G 
Published: May 2021

Abstract
Taking into account the relatively low profitability of railway transport, need of high capital intensity and the same infrastructure payback period, obviously the implementation of such large-scale projects is a difficult task. Therefore, the railway industry relies heavily on new modern technological processes of train traffic organization on the basis of the existing infrastructure or its partial modernization. The freight trains connection technology via virtual coupling will allow you to dynamically change the number and composition of trains that are part of a combined group, eliminate the inherent problems of the connected trains. But most important is that it creates a capacity reserve due to compaction of the train schedule, if there are no restrictions in the traction power network. By the example of the train schedule organization of the Mariinsk – Achinsk railway line section, the authors of this article analyzed the operating modes and capacity of the 27.5 kV system for a batch train schedule. The results show that connected trains require a longer minimum inter-train interval to restore the traction network. With the same inter-train interval for two trains’ types, the main operating mode characteristics of trains with a virtual coupling are better than those for connected trains. Using freight trains in a virtual coupling allows you to reduce the inter-train interval about 1.5-2 times.
Approaches to solving the resource supply problem of the railway company based on intellectual data analysis
Authors: Baryshnikova O V , Kukartsev V V , Ivanenko V V , Kernitskii V N , Gek D K , Rogova D V 
Published: May 2021

Abstract
The purchase of trade establishments is an important and complex process, on which companies spend a lot of resources in order to get the maximum benefit. There are many well-established methods for making a forecast of the required number of goods, but none of them can guarantee an accurate result, because in the matter of forecasting, there cannot be a method that produces a result with 100% accuracy. The object of our research is the process of creating a purchase forecast for trade enterprises. The subject is the analysis of the quality of the purchase forecast for retail outlets. To determine the quality of the purchase forecast of the retail outlets, it is necessary to understand how the purchasing process takes place, as well as highlight the factors that affect the forecast quality.
Intelligent automation system of the railway company’s purchasing activity based on artificial neural networks
Authors: Gek D K , Kukartsev V V , Markevich I V , Shalaeva D S , Yadrov A S , Rogova D V 
Published: May 2021

Abstract
A person is responsible for quality control of the purchase forecast of commercial enterprises, which entails a number of certain consequences. In this regard, we decided to create an intelligent system that will determine the quality of the forecast. Such a system will be a human assistant in deciding on the quality of the forecast. The system will also be able, if necessary, to indicate the necessary adjustments for its forecasting method. As part of this work, a software product will be created that will determine the quality of the created trade procurement plan, and, if necessary, help the user adjust the forecasting method used by the outlet. The aim of the work is to create an intelligent procurement system that will generate its forecast using a neural network, and then determine the forecast error using XYZ analysis.
An intelligent approach for creation of control systems for road sections with pedestrian crossings
Authors: Tynchenko V S , Bondarev A S , Apanasenko S V , Rogova D V , Yadrov A S , Moskvin S A 
Published: May 2021

Abstract
The article discusses the development of a system for recognizing people at a pedestrian crossing. Such recognition system includes a trained classifier and two sets of images taken from an open database containing images of city streets from outdoor cameras. Some shortcomings that can be easily solved with the help of the developed recognition system are analyzed. We also studied common methods of detection, for example, the Viola-Jones method, and their advantages in the operation of the system. A comparison of all the considered methods is carried out and the most suitable one for the set goal is selected and the method of constructing a classifier is described separately. This system is becoming more and more relevant with the development of the technological capabilities of urban life and improves its quality due to its smooth operation and good performance indicators.
Use of the multi-factor regression model for temperature control in structurally isolated rooms of the railway stations
Authors: Tynchenko V S , Markevich I V , Ogol A R , Baryshnikova O V , Rogova D V , Kotova O N 
Published: May 2021

Abstract
The article is devoted to the analysis and construction of a multivariate regression model. The mode of operation of generalized heat points is considered. The positive and negative aspects of using heat points to maintain the temperature at the desired level have been identified. The analysis of the multivariate model is carried out. The input data for the generated model has been defined. The factors that affect the temperature in structurally isolated rooms have been identified. A multifactorial regression model of temperature control in heated rooms has been built, with the help of which it is possible to determine how much heat needs to be supplied to a particular structurally isolated room, which will allow more efficient use of resources to maintain the temperature at the required level.
Confinement creates a 9 GPa ambience: emergence of cristobalite phases in a silica film
Authors: Pramanik Subrata , Ghosh Jiten , Chanda Dipak Kumar , Mukhopadhyay Mrinmay Kumar , Datta Alokmay 
Published: May 2021

Abstract
We present here the results of the x-ray fluorescence (XRF), x-ray photoelectron spectroscopy (XPS), Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive Analysis of x-rays (EDAX), x-ray Reflectivity (XRR), Secondary Ion Mass spectroscopy (SIMS) and x-ray Diffraction (XRD) studies of silica films spin-coated from a Tetraethyl Orthosilicate (TEOS) precursor on native and hydrophilized Al substrates. It is observed that the substrates are mainly porous (porosity ∼ 33%) AlO(OH), there is a diffuse interlayer of highly porous (porosity ∼ 90%) AlO(OH), essentially a modification of the substrate, and a top layer of silica composed of nanocrystals with in-plane dimensions of 100–300 nm and thickness of 2.5 nm with a sharply defined silica-hydrated alumina interface. The silica nanocrystals were found in the metastable high pressure cristobalite phases with the tetragonal or α-phase co-existing in its low (0.77 GPa) and high (9 GPa) pressure structures. This indicates a high normal stress developed from the confinement and provides a basis for the quantitative assessment of the confinement force, which comes out to be higher in value than the van der Waals force but weaker than the Hydrogen bonding force.
High-temperature compressive behavior and kinetics analysis of Al0.4MnCrCoFeNi high entropy alloy
Authors: Kaypour Hamed , Nategh Said , Gholamipour Reza , Khodabandeh Alireza 
Published: May 2021

Abstract
In the present study, AlxMnCrCoFeNi alloys (x = 0, 0.4) were produced by vacuum melting and casting. For this aim, ingots were subjected to the homogenization, cold roll, and annealing. X-ray diffraction analysis and SEM images indicated that the crystal structure is FCC solid solution for MnCrCoFeNi. Moreover, in addition to FCC solid solution, the alloy with aluminum (x = 0.4) ordered B2 precipitates. Besides, hot compressive tests were conducted at different temperatures and strain rates of 0.01, 0.05 and 0.1/s. Investigating the stress-strain diagrams and work hardening rate, it was revealed that twins played a role in the deformation mechanism. In the constitutive equation, the values of the stress exponent and activation energy were measured and they were 6.86 and 434 kJ mol−1, respectively. The exponential equations of peak stress and peak strain, as well as steady-state stress, were obtained due to the Zener-Hollomon parameter. Regarding the linear relationship between the work hardening rate and the dislocation annihilation coefficients, the activation energy of deformation changes at 600 °C. Finally, another effect of the Al addition was shown to be increase in initiation temperature of necklace structure about 200 °C in hot compression test. In addition, B2 nanoprecipitate and nanotwins indicated that there was twin deformation mechanism in alloy containing Al.
Comparative study on GMI properties of Co-based microwires improved by alcohol and liquid nitrogen medium-current annealing
Authors: Liu Rui , Cao Guanyu , Liu Jingshun , Li Ze , Zhang Yun , Liu Zetian 
Published: May 2021

Abstract
This work comparatively investigates the influence of alcohol and liquid nitrogen medium-current annealing on GMI effect of rotated-dipping Co-based microwires. The temperature field distribution of Co-based microwires during current-annealing process is accordingly simulated, further to acquire experimental parameters of annealing current. Experimental results indicate that, GMI characteristics of current-annealed microwires in mentioned two mediums are both significantly improved, and GMI ratio [ΔZ/Z
max]max and magnetic field response sensitivity ξ
max of alcohol-medium current-annealed microwires increase more observable. When the excitation current frequency f = 3 MHz, [ΔZ/Z
max]max and ξ
max of microwires annealed by alcohol medium at 300 mA can reach 240.8% and 78.7%/Oe, respectively. During different type medium-current annealing, the higher-intensity annealing current can generate a larger circular magnetic field, which can effectively regulate the magnetic domain structure of Co-based microwires, so that, they tend to arrange densely and orderly, and the domain walls become much clearer. Meanwhile, the circular permeability μ

φ
of microwires is significantly improved, thereby enhancing their GMI characteristics. Accordingly, the medium-current annealed Co-based microwires can be used as a typically sensitive material to provide technical support for the potential application of micromagnetic measurement field.
Impact of proton dose calculation algorithms on the interplay effect in PBS proton based SBRT lung plans
Authors: Rana Suresh , Rosenfeld Anatoly B 
Published: May 2021

Abstract

Purpose. The purpose of the current study was to investigate the impact of RayStation analytical pencil beam (APB) and Monte Carlo (MC) algorithms on the interplay effect in pencil beam scanning (PBS) proton-based stereotactic body radiation therapy (SBRT) lung plans. Methods. The current in-silico planning study was designed for a total dose of 5000 cGy(RBE) with a fractional dose of 1000 cGy(RBE). First, three sets of nominal plans were generated for each patient: (a) APB optimization followed by APB dose calculation (PB‐PB), (b) APB optimization followed by MC dose calculation (PB‐MC), and (c) MC optimization followed by MC dose calculation (MC‐MC). Second, for each patient, two sets of volumetric repainting plans (five repaintings) – PB-MCVR5 and MC-MCVR5 were generated based on PB-MC and MC-MC, respectively. Dosimetric differences between APB and MC algorithms were calculated on the nominal and interplay dose-volume-histograms (DVHs). Results. Interplay evaluation in non-volumetric repainting plans showed that APB algorithm overestimated the target coverage by up to 8.4% for D95% and 10.5% for D99%, whereas in volumetric repainting plans, APB algorithm overestimated by up to 5.3% for D95% and 7.0% for D99%. Interplay results for MC calculations showed a decrease in D95% and D99% by average differences of 3.5% and 4.7%, respectively, in MC‐MC plans and by 1.8% and 3.0% in MC-MCVR5 plans. Conclusion. In PBS proton-based SBRT lung plans, the combination of APB algorithm and interplay effect reduced the target coverage. This may result in inferior local control. The use of MC algorithm for both optimization and final dose calculations in conjunction with the volumetric repainting technique yielded superior target coverage.