Applied Mathematics and Fundamental Informatics
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Published By Fsb Eihe Omsk State Technical University

2311-4908

2021 ◽  
Vol 8 (1) ◽  
pp. 042-049
Author(s):  
D. I. Ivanov ◽  

The article examines the problem of automatic object recognition using a video stream as a digital image. Algorithms for recognizing and tracking objects in the video stream are considered, methods used in video processing are analyzed, and the use of machine learning tools in working with video is described.The main approaches to solving the problem of recognizing moving objects in a video stream are investigated: the detection-based approach and the tracking-based approach. Arguments are made in favor of the tracking-based approach, and, in addition, modern methods of tracking objects in the video stream are considered. In particular, the algorhythms: Online Boosting Tracker - one of the first object tracking algorithms with high tracking accuracy, MIL Tracker (Multiple Instance Learning Tracker), which is a development of the idea of learning with a teacher and the Online Boosting algorithm and the KCF Tracker algorithm (Kernelized Correlation Filters Tracker) - a method that uses the mathematical properties of overlapping areas of positive examples.As a result, the advantages and disadvantages of the considered methods and algorithms for recognizing and tracking objects for various applications are highlighted.


2021 ◽  
Vol 8 (1) ◽  
pp. 067-075
Author(s):  
Y. Y. Fyalkovskiy ◽  

Successful enterprise management in modern conditions requires the optimization of its business processes. This problem can be solved using simulation, which involves the construction of models that describe the processes as they would in reality. Based on the simulation results, decisions are made to improve the technology and methodology for performing business processes, rational use of resources, reduce the cost of business processes, etc. The paper considers the practical aspects of building models and modeling using one of the popular computer simulation systems Anylogic.


2021 ◽  
Vol 8 (1) ◽  
pp. 004-012
Author(s):  
Y. R. Ashrafova ◽  
◽  
S. R. Rasulova ◽  
◽  

The solution to the optimal control problem by power of external and internal sources acting on the multilink system in nonlocal boundary conditions is investigated. Each arc of the system is an object with distributed parameters, described by a differential equation of hyperbolic type and related only by boundary values, and in an arbitrary way. Due to the long duration of the object's functioning, the exact values of the initial conditions are not known, but a set of their possible values is given. Based on the results of additional measurements of the state of the process at the input or output ends of the arcs (which are not internal vertices), a target functional is constructed, for which minimization a formula for its gradient is obtained.


2021 ◽  
Vol 8 (1) ◽  
pp. 050-058
Author(s):  
D. A. SAGAYDAK ◽  

The possibility of using the secret sharing scheme for secure information exchange in data transmission and storage systems is given. Variants of 1) demultiplexing of transmitted data over two communication channels with different bandwidths are proposed, when a smaller part of information is transmitted over a closed communication channel with a lower capital capacity, and through an open channel with a higher bandwidth, most of the information; 2) distributed storage of data using the services of data processing centers, when not all information is transferred to storage, but some of its large part, which cannot be used to restore the original information.


2021 ◽  
Vol 8 (1) ◽  
pp. 013-022
Author(s):  
O. N. Kaneva ◽  
◽  
A. V. Zykina ◽  
M. M. Volodchenko ◽  
◽  
...  

In this research, an algorithm for creating an optimal schedule for the production of petroleum products is proposed. For solving this problem, a commodity production math model is described. An algorithm for finding a valid point for a nonlinear optimization problem is considered. The algorithm used in the optimize.minimize method is described. A simulation experiment of calculating the optimal schedule by this method is carried out on the basis of the proposed technological scheme.


2021 ◽  
Vol 8 (1) ◽  
pp. 023-033
Author(s):  
E. A. GAVRILOVA ◽  
◽  
I. V. FEDOROV ◽  

This article discusses the relevance of document flow automation in the medical field. The modeling of business processes of the subject area using the CASE tool AllFusion Process Modeler has been performed. An architectural description of the document management system of a medical institution is given. The architecture design was carried out using the unified modeling language UML.


2021 ◽  
Vol 8 (1) ◽  
pp. 034-041
Author(s):  
T. A. Ermakova ◽  
◽  
E.V. Morar ◽  

The article discusses the issues of creating an online store for a company selling footwear Tamaris. Shown is a method for constructing a balance model of an enterprise to assess the costs of counter services. The analysis of the subject area was carried out and the functional requirements for the project were identified. The examples of the implementation of the site pages using the CMS WordPress are considered. The structure of the information base in the 1C: Enterprise system is given.


2021 ◽  
Vol 8 (1) ◽  
pp. 059-066
Author(s):  
K. S. TESLOV ◽  

The article contains a description of the developed mathematical models of a control object (a multi-flow furnace of an oil refinery), a MATLAB application that demonstrates the simulation process, as well as a multivariable automatic control system. The block diagrams of the model of the control system of the multi-stream furnace are presented. The purpose of this work is to develop a demonstration model of a multi-connected control system for a multi-flow furnace of an oil refinery. A description of the created software package based on the MATLAB interactive environment for scientific and engineering calculations with the Simulink and AppDesigner extension packages is presented, which contains tools for modeling the processes of the selected object under the conditions of disturbances acting on the object, as well as allowing visualization of the results obtained and plotting time characteristics.


Author(s):  
I. V. STARIKOV ◽  
◽  
M. S. PESHKO ◽  
V. G. KHOMCHENKO ◽  
◽  
...  

The process of the crude oil heating is continuous and its parameters can change over time, so the process must be controlled. The article presents the development of the traditional control system of a crude oil heating process and analytical expressions, with the Simulink model. The study results of the obtained model under the conditions of its parameters changing are presented in the framework established by the regulation.


2020 ◽  
Vol 7 (4) ◽  
pp. 004-011
Author(s):  
O. S. Solovyeva ◽  
◽  
V. A. Gorbunov ◽  
A. V. Myshlyavtsev ◽  
◽  
...  

In this paper, a simple lattice model of the metal-organic adsorption layer of 1,3,5- tris(pyridyl)benzene and copper on the surface of Ti2CO2 was proposed. In this model, the selfassembly of the organometallic layer is considered as a one-component system that implicitly includes metal adatoms. The ground state phase diagram is calculated. A Monte Carlo simulation is performed using the Metropolis algorithm and the parallel temperature technique. The isotherm of the metal-organic is calculated at T = 300 K. All the results indicate the possibility of the formation of stable metal-organic phases on the Ti2CO2 surface.


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