bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mathematical modeling of the axial-piston pump power regulator
Authors: Zedgenizov V G , Kokourov D V , Biryukov D S 
Published: November 2021

Abstract
A mathematical model of the regulator was developed; a scheme for its solution in the Matlab-Simulink environment was suggested; dependencies of the spool movement (x1), piston (x2), transition time (t) and other parameters on the pressure in the pressure line (p) have been determined. The mathematical model of the regulator establishes the effect of pressure on control process parameters. When the pressure increases from 30 to 45 MPa, the regulator spool moves at a distance varying from 0.4 - 2.8 mm. The spool movement is proportional to the pressure. The piston movement is more sensitive to the change in pressure. It changes within the range of 3–19 mm, while the relationship is non-linear. The cylidner pressure and the ratio of rocker arms are proportional to the pressure and increases 1.5 times; the transition time is expressed by a non-linear dependence and decreases two-fold.
Computational studies of the influence of variable valve timing on the performance of a gas engine with Miller’s thermodynamic cycle
Authors: Milov K V 
Published: November 2021

Abstract
Current development trends in the field of internal combustion engines aim at regulating all processes of the engine and individual units. A converted diesel to gas engine with Miller thermodynamic cycle is more energy efficient at partial loads than a gas engine with Otto thermodynamic cycle. The Miller cycle engine with variable valve timing and valve lift has been investigated to improve performance and energy efficiency across the load range. The aim of the work is to study the influence of the displacement of the valve timing phases of the intake and exhaust camshafts and the valve lift height on the performance of the gas engine with the Miller cycle. Computer modelling was based on data obtained from the full-scale experiment on the gas engine with the Miller thermodynamic cycle.
Algorithm for determining the unbalances of continuous mixers rotors
Authors: Podgornyj Yu I , Martynova T G , Yu Skeeba V , Lobanov D V , Martyushev N V 
Published: November 2021

Abstract
The paper presents a design model of a continuous mixer, which employs working shafts with kneading and scraping blades as the equivalent rotors. The rotors are represented in the orthogonal system x, y, z. An algorithm for reducing a three-dimensional system to flat ones using three-dimensional simulation is proposed to simplify further calculations. The inertia and the mass moments of the rotors’ structural elements were determined for the specific parameters of the parts obtained by blanks casting taking into account the accuracy classes. The conducted research allowed developing recommendations for choosing rational methods for manufacturing parts of continuous mixers and optimal parameters for the operation of the mixer.
Estimation of the accuracy of fuel consumption measurement based on data from the on-board CAN-bus
Authors: Toropov E I , Trusov Y P , Vashurin A S , Moshkov P S 
Published: November 2021

Abstract
The legal requirements for vehicle exhaust emissions are becoming increasingly stringent. Emissions are directly related to fuel consumption. Therefore, reducing fuel consumption is a very urgent task. To solve this problem, it is necessary to assess the influence of various factors on the actual fuel consumption. To determine the fuel consumption, there are a large number of different methods using external flow meters installed in the fuel line, installing additional level sensors in the fuel tank. A very simple and convenient method is based on the use of information from the electronic engine control unit. This method requires minimal financial investment and does not require significant structural changes. The question arises about the measurement accuracy according to this method, since the ECU calculates the fuel consumption according to a mathematical model, calibrated and programmed at the factory. To assess the accuracy of this method, a set of tests was carried out. The tests were performed at constant vehicle speed and according to the standard driving cycle. During the tests, the fuel consumption was recorded using a high-precision calibrated flow meter installed in the fuel line and on the basis of data from the engine ECU. Based on the test results, a conclusion was made about the size of the discrepancy in the methods for determining the fuel consumption.
System for determining the parameters of a sea vessel by analyzing a photo image
Authors: Studenikin D E , Kuku E A 
Published: November 2021

Abstract
In this paper, a method is considered for determining the parameters of a sea vessel, such as its spatial orientation and the distance from the observation point to this vessel from a photographic image to facilitate the task of identifying vessels at night. A measuring system for practical implementation is proposed, consisting of an optical segment, a segment for determining the angle of the vessel by the image, a segment for determining the distance to the object, and a segment for accumulating and filtering data. An algorithm for extracting the parameters of ship lights from a photographic image, their analysis, and the calculation of the quantities required for classification are described. The effectiveness of various classifier architectures for determining the angle of the vessel was experimentally tested, among which the SVM architecture was the most effective. A method for compiling a “depth map” for a static image based on the data of real distances to objects in the daylight image and the coordinates of the corresponding pixels in the same image is described. The method of backpropagation of the error is used for the obtained distances in the corresponding segment of the system based on the existence of the position-distance mapping. The model of the “depth map” constructed based on these data made it possible to obtain a sufficient distance to the object from the photograph.
Assessment of the quality of control of the ship “crosshair” under wind load conditions
Authors: Yudin Yu I , Petrov S O 
Published: November 2021

Abstract
There are few ports in the Far North. Therefore, it is not difficult to assume that most of the cargo operations in the future will be implemented in the open part of the sea space of the Arctic regions. In this regard, the safe maneuvering of a tanker at the offshore oil terminal when carrying out cargo operations with hydrocarbon raw materials is one of the most important and urgent tasks. When performing this type of operation, the main threat to environmental safety is a rupture of the cargo line hose and damage to the underwater pipeline due to the tanker piling up on the oil terminal. Therefore, the improvement of the methods of controlling the movement of the tanker during its positioning at the oil terminal in the process of carrying out the operation of loading oil is significant. Improving tanker control technologies can contribute to improving the quality of control, reducing the likelihood of emergencies, and, as a result, increasing the safety of cargo operations when transshipping oil products in the open sea.
Numerical method for solving problems of dynamics of marine complexes and ship auxiliary mechanism
Authors: Osmukha S A 
Published: November 2021

Abstract
The article describes the study of methods of hydrodynamic coefficients using finite volumes, as well as numerical methods based on the study of data from the air tube experiment.The methods of converting the data of air tube experiments when working out the elements of the fixed assets of the fleet in the bases of orthogonal functions (bursts) were investigated and described. The study is based on the obtained mathematical models of processes using the methods of multi-turn engineering design, methods for constructing computer models in a structure that provides for an open process of developing and approving proposed project elements.An urgent task is to develop methods for reducing costs associated with the design and creation of marine infrastructure facilities and fixed working capital. The relevance of the tasks follows from the expensive cycles of project development, the labor costs of highly qualified specialists.
Automated system for diagnosing the structural failures of the unmanned vessel
Authors: Zaslonov V V 
Published: November 2021

Abstract
The studies show that individual elements of a vessel component that are subjected to variable-repeated loads may be destroyed even at lower voltages than any other calculated component (unit). This problem is particularly important for the dynamically developing direction of unmanned navigation, which operation may be carried out with a reduced crew, in its absence – both remotely and autonomously. Conditions of cyclic variable loads in corrosive media also play an important role with a total number of operation cycles, which may reach many millions over the entire operation period. It should be noted that the statistics show that about 80% of accidents in maritime transport are caused by fatigue effects. This paper is devoted to the development of software that is able to predict fatigue failure of units and structures. The paper also descriunmanned vessel the application within an unmanned vessel, as well as the use of described mathematical algorithm in a device with the possibility of projection of augmented reality on vessel units for further prediction. The described method of predicting the strength and simplifying the service is relevant when remote security controls are required.
The method for automatic control of a ship with directional instability
Authors: Kondratyev AI , Burylin I V , Mamaev KP , Skorokhodov S V 
Published: November 2021

Abstract
A method for creating an automatic control system for a ship with directional instability has been developed. As part of the tests of a small-sized unmanned vessel, a control diagram was built. It showed that the vessel is unstable along its route. It became necessary to add a control channel for the angular acceleration of the vessel to the main channels of the PID regulator. The PID-U regulator has a significant advantage in controlling an unstable vessel on the route over a standard PID regulator due to the channel of angular acceleration; the regulator monitors the angular speed and compensates it with control actions. The disadvantage of the method is difficulties in finding the angular acceleration of the vessel, since, gyroscopic sensors installed on vessels provide data only on the route and angular speed. Simple integration of the angular speed to determine the acceleration can result in errors, especially in wind-wave conditions. The mathematical observer based on the Kalman filter can be used. The results of operation modeling forthis regulator are described.
Assessment of working conditions and informational loads on car drivers
Authors: Denisov E I , Stepanyan I V , Khussein Abobakr Mohamed A , Vuitsik P A , Melnik M S 
Published: November 2021

Abstract
The article provides an overview of risk factors that are caused by the working conditions of car drivers and provides an example of a methodology for assessing visual loads that were measured using a digital video recorder. To assess real visual loads on a car driver, a method for simultaneous recording of information of visual load and heart rate has been developed and tested. The proposed method made it possible to establish a correlation between the dynamics of the flow of visual traffic information and the response of the driver’s body in the form of response changes in the pulse. The effectiveness of the method was shown and the correlation of video fragments and pulsograms with R = 0.4 was established. The results of the work are applicable to assess the working conditions of car drivers, when visual stress is a leading factor in working conditions, in order to prevent fatigue and road traffic accidents.
Algorithm for constructing a route to pass a narrow fairway
Authors: Antonov A A , Studenikin D E , Malakhov S O , Filatova R G , Kondratyev S I , Khekert E V 
Published: November 2021

Abstract
Modern navigation systems often employ the algorithms for plotting lines for the preliminary route construction. The current conditions of technological development imply the simplicity of constructing routes. However, the most important part was and remains the speed of the system that generates the route. The authors of the paper proposed a universal algorithm for constructing a navigation route in narrow channels of the sea. The presented algorithm identifies the middle of the fairway as the safest point at each narrow segment and connects them with track lines. The problem that can arise is smoothing, as the middle of the fairway can shift significantly. To solve this problem, new relative and absolute parameters that characterize plotting of turning points were introduced. In addition, a unified universal formula was proposed for finding the coordinates of these points on a line perpendicular to the current route of the vessel. It was experimentally proved that correctly selected empirical parameters enable the algorithm to quickly construct a route in any navigation area with a relatively low computational complexity. This approach is appropriate for clearly delineated zones of the fairway, and it is compatible with zone methods.
Development of calculation procedure for research and refinement of suspended design natural frequencies by example of vehicle exhaust system
Authors: Rakhmatov R I , Krutolapov V E , Nadareishvili G G , Malkin I V 
Published: November 2021

Abstract
The article presents a finite element model exhaust system developed in the ANSA software package. Experimental research of the dynamic characteristics mounts exhaust system. and developed calculation procedure for improvement of the suspended design natural frequencies based on the experimental definition of boundary conditions by the example of the vehicle exhaust system. Requirements for natural frequencies of the exhaust system are developed; finite element models of the exhaust system are developed; physical and mechanical characteristics of mounts are defined; natural frequencies and oscillation modes of the exhaust system taking into account physical and mechanical characteristics of mounts are calculated.
Impact of the Internet of Things on the formation of a model for optimizing port terminal operations
Authors: Botnaryuk M V , Kalinina S A 
Published: November 2021

Abstract
The research established that new business conditions have radically changed relations between the participants in the transport process. The Coronavirus Disease Pandemic (COVID-19) has revealed the lag of most maritime enterprises in the digitalization process. The problems of interaction and competitions caused by the transformation of stereotypes of behavior of transport services consumers have become more acute. The need for new approaches to optimizing port terminal operations has determined the purpose of the research. The problem is multifold, that is why the article analyzes statistics; a survey of top managers of companies providing port services was conducted. The key requirements of customers are the speed of service, organization of terminal operation on the concept of the Internet of Things, digital competence of company employees that affects the speed and quality of services.In order to optimize terminal operations, the authors suggest applying a mathematical model providing the competent planning of terminal operations with a given probability of customer service. The authors suggest increasing the cooperation between employers and educational institutions in the development of digital competence in students and application of the Internet of Things in the Maritime Industry.
Development and Application of Coal Mine Geological Drawing System Based on GIS Technology
Authors: Lin Liujun 
Published: November 2021

AbstractResource exploitation and competition have always been one of the most important topics in the world. Because the possession and exploitation of resources is directly related to the supply of social environment, we need to use various technologies to detect the resources owned by various environments in the country to make a reasonable allocation. In our country, the most commonly used technology should be GIS technology. Similarly, with the development of the past and times, the reserves of coal have begun to decrease, and the utilization of new energy has not been fully popularized, so the purpose of this paper is based on GIS technology to study the manufacture of geological drawing systems in coal mines, and to develop and apply them. After exploring the discovered coal, mine topographic map and the structure of the coal mine and its possible location, we can carry out systematic development and application through GIS by consulting the relevant literature of the geological map of the former coal mine and the development of GIS technology. Finally, its effect is verified by conducting another field survey of the discovered places. The experimental results show that the coal mine geological drawing system based on GIS technology can be more beneficial to our discovery and survey, which is 20% higher than the previous detection efficiency and 40% higher than the drawing accuracy.
Computer Data Storage and Management Platform Based on Big Data
Authors: Luo Cheng 
Published: November 2021

Abstract
Due to the continuous development of information technology, data has increasingly become the core of the daily operation of enterprises and institutions, the main basis for decision-making development. At the same time, due to the development of network, the storage and management of computer data has attracted more and more attention. Aiming at the common problems of computer data storage and management in practical work, this paper analyzes the object and content of data management, investigates the situation of computer data storage and management in China in recent two years, and interviews and tests the data of programming in this design platform. At the same time, in view of the related problems, the research results are applied to practice. On the basis of big data, the storage and management platform is designed. The research and design adopts a special B+ tree node linear structure of CIRC tree, and the linear node structure is changed into a ring structure, which greatly reduces the number of data persistence instructions and the performance overhead. The results show that compared with the most advanced B+ tree design for nonvolatile memory, crab tree has 3.1 times and 2.5 times performance improvement in reading and writing, respectively. Compared with the previous NV tree designed for nonvolatile memory, it has a performance improvement of 1.5 times, and a performance improvement of 8.4 times compared with the latest fast-fair. In the later stage, the expansion of the platform functions is conducive to the analysis and construction of data related storage and management functions, and further improve the ability of data management.
Facial Micro-expression Recognition Algorithm Based on Big Data
Authors: Xia Qun , Ding Xiaofeng 
Published: November 2021

Abstract
The 21st century is the era of big data. All aspects of society, from facial expressions to national defense and military, will generate massive amounts of data. Facial expression recognition technology, as a new technology spawned in the era of big data, has broad applications The prospects are widely used in intelligent transportation, assisted medical care, distance education, interactive games and public safety. In recent years, it has attracted more scholars’ attention and has become another research hotspot in the field of computer vision and machine learning. The purpose of this article is to study the facial micro-expression recognition algorithm based on big data. This time, big data technology is used to analyze the algorithm. Big data can better solve the small changes in face recognition and complex data processing. This paper firstly summarizes the basic theory of big data, derives the core technology of big data, and analyzes its shortcomings and shortcomings based on the current research status of facial micro-expression in my country, and finally discusses the big data based on big data. Research on facial micro-expression recognition algorithm under the following. This article takes the research situation of the face micro-expression recognition by related companies as the survey object, and analyzes it through the literature data method, questionnaire survey method, mathematical statistics method and other research methods. Experimental results show that the lower the dimensionality reduction, the less classification time is used. When the dimensionality reduction is 45 dimensions, the recognition rate of facial expressions is the highest.
Construction of Space Quantum Information System Based on Satellite Recognition
Authors: Tao Lingping 
Published: November 2021

Abstract
Satellite identification is a form of space quantum information, which refers to the use of artificial earth satellites as the transmitting station between earth communication stations to perform satellite identification to construct a space quantum information system. However, at this stage, a single form of identification cannot meet the needs of various aspects such as the development of the information society. And mobile broadband services. Based on this, this paper has carried out research on the construction of space quantum information system based on satellite recognition. This paper firstly introduces the research significance of space quantum information transmission based on satellite identification, and then analyzes the research status of space information system based on satellite identification and the research status of space quantum information system based on satellite identification at home and abroad. Aiming at the problem of asymmetrical transmission of space information, this paper proposes, a spatial asymmetric transmission scheme based on layered modulation and network coding, and in view of the low communication quality caused by the influence of weather and surrounding environment on the space-based communication channel, this paper proposes an adaptive transmission scheme of spatial information based on satellite cooperation. The survey results show that under the MNC strategy and the traditional zero-padded strategy, the end-to-end bit error rate performance of S2 is not much different. As the signal-to-noise ratio continues to increase to 30dB, the two are basically the same. In the whole range of k value, the access probability of the MNC strategy is equal to a constant 0.67 and remains unchanged. When k=1, under the OUS scheme, it shows that the two source nodes have the same probability of accessing the channel, and the access probability is 50%, which is 16.7% lower than that of the MNC scheme.