bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of the effectiveness of using artificial intelligence to predict the response of the human body to cardiovascular diseases
Authors: Golovenkin S E , Dorrer M G , Nikulina S Yu , Orlova Yu V , Pelipeckaya E Yu 
Published: November 2020

Abstract
This article discusses the issue of assessing the quality of predicting the dynamics of the human body in conditions of cardiovascular disease using intelligent software systems. To improve the forecast accuracy, the voting method of 3 competing systems was used, as well as the elimination of sparse data columns. Assessment of the quality of the prognosis of complications of cardiovascular diseases is carried out in terms of the accuracy and specificity of the diagnosis. The constructed system for 10 predicted diagnoses out of 12 showed a prediction accuracy of more than 90% with a specificity of more than 85%. This result shows a fairly high predictive ability of the created system when solving the problem of predicting the reaction of the human body to the onset of cardiovascular diseases (for example, complications of myocardial infarction).
CBC effectively stratifies the patients with different types of malignant tumors
Authors: Sadovsky M G , Feller A A , Martynova E A , Chernyaev D V , Semenov E V , Slepov E V , Zukov R A 
Published: November 2020

Abstract
Early prediction of tumor process especially related to the detection of oncological diseases at early stage is a hot problem. We compared the complete blood count data for patients with various types of tumors; the patients with tumors of the hematopoietic system were excluded from the study. We used both linear (K-means) and non-linear (elastic maps) methods. No informative patterns have been found through the implementation of classic linear statistics methods. On the contrary, the elastic maps technique revealed the specific groups among the patients. Neither relation to the gender, nor age of patients has been found. However, the abundance of basophils, eosinophils, leukocytes and immunoglobulins exhibit specific pattern of the clusters occupancy. Thus, in our study we found that patients are stratified in accordance with quantitative changes in laboratory blood parameters, which is associated with the body’s response to stress caused by a malignant tumor.
Comparison of the YOLOv3 and Mask R-CNN architectures’ efficiency in the smart refrigerator’s computer vision
Authors: Dorrer M G , Tolmacheva A E 
Published: November 2020

Abstract
The article deals with the computer vision system of the smart refrigerator “Robimarket”. The equipment of the working area of the refrigerator, the selection of a set of chambers, the collection of a training sample for the computer vision system are described. The choice of the artificial intelligence architecture of the computer vision system was made by comparative testing of the YOLOv3 and Mask R-CNN architectures. The comparison was made on one hardware platform, one training set and a set of test cases. As a result, a comparison table was created for the speed and quality values of each model. As a result, the Mask-RCNN architecture was chosen, which showed a significantly higher detection accuracy in the video stream with acceptable performance for this task.
On some forms of registration and display of modes of operation of vehicles
Authors: Kolesnikov I M , Malchikov S V , Blyankinshtein I M 
Published: November 2020

Abstract
The article discusses the shortcomings of existing methods of accounting for engine operating time for the purpose of forming standards and modes of maintenance and repair. The results of testing a vehicle using specialized tools, including an adapter to the OBD diagnostic connector and a smartphone with special software, which allows registering, storing and accumulating data on the speed and load modes of the engine and the car, are presented. According to the test results, the drawbacks of registering the parameters of speed and load modes are analyzed by traditional characteristics in the form of mathematical expectation and variance of random variables. Methods of formalized display of the character of parameter changes in time are considered using autocorrelation functions and matrices of transition probabilities. The results of testing the analysis of the nature of changes in operating parameters in urban and mainline operating conditions are presented.
Physical methods in innovative technological solutions of beet refuse processing
Authors: Perfilova Olga V , Babushkin Vadim A , Blinnikova Olga M , Bryksina Kristina V 
Published: November 2020

Abstract
Currently, the mechanisms of influence of microwave and infrared energy on the nutritional value of raw materials and food products are not fully understood. At the same time, the main task of the food industry is the maximum possible preservation of the healthy properties of raw materials during its processing, including using of physical methods. The authors investigated the possibility of using microwave and infrared heating in the production of dried beet refuse. The optimal parameters of microwave processing of beet refuse were established, at which the maximum increasing of the total antioxidants content is observed: electric power - 800 W, time - 160 sec, specific work - 640 W / g · sec, heating temperature of refuse - 92 ° C. The intensification of the process of beet refuse infrared drying with the lowest loss of antioxidants is provided at a temperature of 60-65°C and a drying time of 3 hours 25 minutes.
Engineering of constructive parameters of vibroaspiration separator of oil-containing grain seeds
Authors: Rogovskii I L , Palamarchuk I P , Voinash S A , Troyanovskaya I P , Butenko A F , Sokolova V A 
Published: November 2020

Abstract
At designing of a vibroaspiration separator on the carried out researches, the working hypothesis, concerning increase in a driving force of process of fractionation at the expense of imposing in system of the combined unbalance from action of compulsive forces and torque which are resulted in system at realization of a self-oscillation mode of movement of the central pipe of the distributor has been offered. During theoretical and experimental studies was proved the possibility to improve the quality of separation by using the lower distribution zone of the vibroaspiration separator. Increasing the speed of seed particles under the influence of centrifugal forces, Coriolis acceleration and self-oscillating motion in the process of seed separation can increase the value of trajectory changes by 25-30 %, and thus improve the quality of seed separation by 10-15 %. The results of experimental studies of created vibroaspiration separator of sunflower seeds allowed to substantiate the following rational parameters of this process: the diameter of the distributor hopper must be within 50-60 mm; the diameter of the branch pipe, that supplies seed into the vertical aspiration channel is 30-40 mm at useful channel length of 0.8 m; air flow speed, for the best separation of sunflower seeds is 75-90 % of the critical air flow rate and is 4.5-5.5 m/s. To achieve effective inertial forces and to ensure the clarity of the separation of fractions in the conditions of self-oscillating mode of movement of the central pipe of the distributor, it is rational to mount 20 sailing elements.
Features of ultrasonic non-destructive testing models of rectangular anisotropic elastic waveguides with a membrane coating
Authors: Storozhev S V , Bolnokin V E , Vyskub V G , Hai Duong Minh , Mutin D I 
Published: November 2020

Abstract
A numerical-analytical fuzzy-set method for synthesizing estimates of the influence of uncertainty factors in the form of scatter of the initial physical-mechanical and geometric parameters of a long waveguide of prismatic geometry from anisotropic single-crystal material of a cubic system on the phase velocities of traveling normal elastic waves for applying in ultrasonic nondestructive evaluation are presented. Waveguide has absolutely flexible inextensible thin coatings of a faces. The technique is based on the description of parameters with scatter errors in the form of fuzzy-intervals quantities and on the transition to fuzzy-set arguments in the analytical representations of wave numbers for various branches of the dispersion spectrum. The alpha-level form of the heuristic generalization principle is used. Examples of a fuzzy-set description of a series of frequency distributions characteristics of phase velocities of traveling normal waves for a waveguide from a silicon single crystal are given.
RETRACTED: Investigation of composite materials supported by carbon fiber fabric (TFC) in pre-cracked concrete beams
Authors: Karnoub Amer , Huang Hajian , Antypas I R 
Published: November 2020

Abstract
This work is a commitment to breaking down the conduct of pillars that strengthened by composite materials. The investigation was helped out through an exploratory and logical examination on eleven strengthened concrete and fortified solid components underneath and decently strengthened, pre-split and afterward strengthened utilizing nearby carbon-fiber texture utilizing epoxy pitches. So as to consider the impact of the underlying splitting condition on the conduct, one of the bars was strengthened without being broken ahead of time and contrasted with a pre-broken and fortified bundle and afterward to another stacked in any event, when broken without breaking or hardening. In this examination, four beams were pre-broken and reinforced in the all-inclusive part and as an afterthought part with U-formed pieces of various measurements to keep away from division on one side and the investigation of rebuilding of the compound at the impact of shear then again. At long last, a similar report was directed between the last estimated exploratory obstruction and that registered by expository models.
Method and means of cavitation erosion tests under abnormal conditions
Authors: Khmelev V N , Barsukov R V , Golykh R N , Abramenko D S , Genne D V , Tertishnikov P P 
Published: November 2020

Abstract
The monitoring method for erosion resistance of metals and protective coatings under cavitation exposure in abnormal operating conditions is proposed. This method extends the scope of the standard ASTM G32-10 Standard Test Method for Cavitation Erosion Using Vibratory Apparatus. The specialized ultrasonic device has been developed for the study of cavitation destruction of materials and coatings at high pressures, temperatures up to 1000 °C and in liquid media with various properties (including aggressive ones) for implementing the monitoring method. The control system based on continuous monitoring of electric parameters of piezoelectric vibratory system was used to providing the necessary vibration amplitude in the process of cavitation under all changes of liquids parameters. The control system (based on changes monitoring of liquid active resistance) was used for equal efficiency of cavitation process on the surface. Practical recommendations for testing of cavitation erosion of metals and protective coatings in abnormal conditions are given.
Non-parametric algorithms of identification and control of group of technological processes in low-carbon steel production
Authors: Kornet M E , Raskina A V , Korneeva A A , Videnin S A , Masich I S 
Published: November 2020

Abstract
This paper focuses on the design of a two-circuit scheme of a centralized control system for a group of technological processes in low-carbon steel production. The main feature of the proposed scheme is the presence of an external control loop with a centralized control unit, which is a set of software and algorithmic support. The functioning of control unit is to calculating of reference commands for local control loops in order to implement coordinated control of the system as a whole. For the development of algorithmic support, nonparametric identification and control algorithms were selected. The results of computational experiments presented in the work demonstrate the high efficiency of the proposed scheme.
Diagnostics of automobile starters by the parameter of current consumption
Authors: Puzakov A V , Dryuchin D A , Voinash S A , Ariko S Ye , Kamenchukov A V , Ukraimsky I S 
Published: November 2020

Abstract
The urgency of the problem of diagnosing automobile starters is caused by the high complexity of existing diagnostic methods that require removing the starter from the engine. The occurrence and development of malfunctions of starters are caused by a change in the current consumed at the time of starting the internal combustion engine. The value of the starter current consumption was experimentally determined using current-measuring pliers for a group of vehicles with different mileage. It has been established that the current consumed by workable starters decreases monotonically with an increase in operating time, not reaching the maximum permissible value determined by the method of tolerance boundaries. The current consumption of starters with malfunctions is much less than the allowable value, allowing you to use this parameter to determine the technical condition. To assess the service life of automotive starters, the degree of working capacity was used, due to the difference between the current and limit values of the diagnostic parameter. The practical significance of the research is to determine the residual life of automobile starters. Further research will be aimed at establishing the dependence of the current consumption on the ambient temperature and forming recommendations for diagnosing automotive starters.
Development of a technological processes registration system based on CCD cameras for tasks of industrial laser beam machining of materials
Authors: Chkalova D G 
Published: November 2020

Abstract
The use of CCD cameras for construction of systems for automated control of laser beam machining technological processes is an urgent task due to low cost of the equipment used and high information content of the resulting graphic data. The main goal of the study is to achieve the maximum information content of the working area image of the tool by ensuring its highest contrast by selecting the optimal relative position of the system components. As a result of the experiments, it was found that the most effective configuration of video recording system is lateral position of camera and illumination, opposed the movement direction of laser head. The methodology for comparing the contrast of obtained images from CCD cameras for various configurations in order to mathematically evaluate their applicability for automated processing tasks is proposed.
Modeling heat transfer processes in heating systems for surface of highways
Authors: Kamenchukov A V , Tyan V D , Voinash SA , Ariko S Ye , Teterina I A , Sokolova V A , Rzhavtsev A A 
Published: November 2020

Abstract
At present, icing of the road surface has a significant impact on traffic safety, which reduces the coefficient of adhesion of tires by 5–10 times. In order to reduce this negative effect in winter, frictional, chemical, physical-chemical and combined methods of struggle are used. In this case, one of the most promising ways to combat icing is to use a hydraulic system for snow melting. This is due to the possibility of laying not only individual systems of snow melting under the road surface, but also urban heat communications on road sections subject to frequent ice formation. In this regard, the modeling of heat transfer processes in heating systems for road surfaces is relevant. The proposed mathematical description, as well as its implementation in the Abaqus software package based on finite element calculations, makes it possible to determine the temperature on the surface of the highways taking into account the coolant supply, the location of pipes, their diameter and depth, air convection temperature and a number of other parameters. In this regard, the developed simulation model of the hydraulic system for heating the surface of highways will be widely used in the reconstruction of road surfaces, as well as for the optimization of heating network laying systems.
Power distribution mechanism for the transmission of forest tracked and wheeled vehicles
Authors: Dobretsov R Y , Voinash S A , Sokolova V A , Krivonogova A S , Pushkov Yu L , Andronov A V 
Published: November 2020

Abstract
The article schematically considers a proposal for development and application of a controlled power distribution mechanism for machines involved in timber industry and agriculture. Use of the mechanism will increase energy efficiency of skidder and forwarder on tractor chassis, improve steering quality of tracked vehicles and improve controllability of wheeled vehicles. For articulated vehicles, use of a controlled power distribution mechanism is expected to reduce stresses on swing mechanism. The article presents analysis results of literary sources on problem of using controlled power distribution mechanisms in transmissions of tracked and wheeled vehicles. Advantages of using such mechanisms in transmissions of tractors and forest vehicles on their chassis are shown. References are given to publications containing descriptions of mechanisms that are similar in characteristics to the developed one and known methods for determining main parameters of power distribution mechanisms, approaches to kinematic, force analysis and energy balance construction of such mechanisms. Kinematic diagram of a new controlled mechanism of power distribution is considered, main parameters, control technologies, and areas of its application are determined. Links between the project and currently developed capabilities of Russian production are outlined. Development prospects of technology for controlling distribution of power in transmissions of tracked and wheeled vehicles in the field of transport engineering are indicated. A reference is given to the research complex created and used at the Peter the Great St. Petersburg Polytechnic University, as allowing to conduct comprehensive tests of experimental models of transmissions of transport and traction vehicles.
The effect of microwave heating of fruit and vegetable raw materials on the water-soluble antioxidants content
Authors: Perfilova Olga V , Babushkin Vadim A , Bryksina Kristina V 
Published: November 2020

Abstract
In the food industry, when processing fruits and vegetables, heat treatment is used. Most often, the pretreatment processing of plant materials is carried out with steam or water, as a result of which there is a loss of nutrients valuable for the human body, including antioxidants. The article proves the advantage of using microwave heating as a preliminary heat treatment of apple and beet refuse in order to increase nutritional value by increasing the content of water-soluble antioxidants in them. Thus, the content of vitamin C increases by 1.32 - 1.57 times, flavonoids by 1.77 - 2.01 times.
Modeling of friction engagement in a joint with carbon-carbon composite bushings in the atmosphere of Venus
Authors: Alisin V V , Roshchin M N , Markachev N A , Bogachev V A 
Published: November 2020

Abstract
The issues of the friction engagement of a carbon-carbon composite with steel under conditions of temperature and composition of the atmosphere of the planet Venus are studied in the article. The statement on the admissibility of using a carbon-carbon composite in friction units in an open atmosphere is substantiated. Antifriction properties of a carbon-carbon composite are investigated for friction against steel in the speed range 0.05 - 0.25 m / s and a contact pressure of 1 MPa. Tribological tests were carried out in sliding conditions according to the pin-on-disk scheme on a high-temperature test bench with a temperature range of 300-600 ° C. It has been shown experimentally that for given parameters of friction, there is no seizure of surfaces. Based on the study, it was found that the average value of the friction coefficient is 0.25, and the experimental data spread is less than 20%.
Assessment of the stress-strain state of a cable with parallel-laid conductive cores under bending deformations
Authors: Ismailov G M , Nizhegorodov A I , Lomovskaya S A , Sarkisov Yu S , Gorlenko N P 
Published: November 2020

Abstract
The paper considers the stress-strain state of a cable with parallel-laid conductive cores, taking into account the operating conditions. With the help of the Ansys program, the tribological interaction of parallel laid cable elements is modeled, the contact stresses between the elements are determined. Assessment of the stress-strain state of a cable with parallel-laid conductive cores will make it possible to assess the strength of the cable construction materials. These results can be used for twisted cables in design to improve their reliability.
Estimation of gas exchange parameters in the engine by numerical simulation
Authors: Zholobov L A , Medvedev A V , Pasin A V , Novozhilov A I 
Published: November 2020

AbstractThe article is devoted to mathematical modeling of gas exchange processes. The features of modeling gas exchange processes based on gas dynamics equations are shown. The parameters of the gas flow are calculated by three conservation laws obtained by applying the general laws of physics to the elementary mass released in the flow, followed by a transition to the limit when the volume occupied by this mass tends to zero: momentum, mass, and energy. A mathematical model of the working process in the engine cylinder is created by the necessary conditions for calculating the entire gas exchange. Using a computer allows for a more accurate and complete description of all the main features. In the foreground is not the complexity and volume of calculations, but the accuracy of approximating the processes of fresh charge entering the engine cylinders, the air flow in the intake tract, the possibility of a comprehensive study of the effect on the filling process of each of the parameters of the intake tract design and gas distribution, and the features of the engine operation mode under study. Filling dynamic phenomena in the intake system has the main goal of optimizing engine design parameters.
Mathematical models and solution of problems of the transfer theory in technical systems based on the problem of filtration of the Poisson process
Authors: Firsov A N , Sorokina N V 
Published: November 2020

Abstract
In this paper the problem of the filtration of a Poisson random process is solved. The theory of filtration has a rich history, but in recent decades it has taken an important place in the framework of cybernetics and engineering. The requirements of modern production and the implementation of complex control and communication systems determine the development of filtration theory methods. Much attention is paid to the formal mathematical aspects of the problem. An analytical solution of the filtration problem is constructed by the authors of the paper, the suggested approach helps to reduce the solution of the problem to the solution of a system of ordinary differential equations of the first order, and the solutions of differential equations give the desired quantities. Thus, the method for solving the problem of filtration is simplified. The proposed approach can be used in the complex engineering systems’ management, for example, when proceeding data from different sensors.