scholarly journals Development of the mathematical model for information system diagnosis adiposity in people with arterial hypertension

2012 ◽  
Vol 5 (2(7)) ◽  
pp. 25-26
Author(s):  
Дмитрий Антонович Амбросов
Keyword(s):  
Mathematical Model ◽  
Information System ◽  
Arterial Hypertension ◽  
System Diagnosis ◽  
The Mathematical Model

scholarly journals The mathematical model of monitoring information system with failure prediction

2019 ◽  
Vol 1260 ◽  
pp. 022010 ◽  
Author(s):  
N R Storozhenko ◽  
A I Goleva ◽  
V I Potapov ◽  
E I Pastuhova ◽  
D A Tunkov ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Information System ◽  
Failure Prediction ◽  
The Mathematical Model ◽  
Monitoring Information

scholarly journals METHODOLOGY OF DEVELOPMENT OF MATHEMATICAL MODELS OF INFORMATION PROCESSING SYSTEMS

2021 ◽  
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Information System ◽  
Information Processing ◽  
Mathematical Models ◽  
System Approach ◽  
Research Method ◽  
Literary Sources ◽  
History Of ◽  
The Mathematical Model

Modeling as a research method is a powerful cognitive tool throughout the history of human development. The article describes the methodology for the development of mathematical models of information systems, based on materials from various literary sources, author's developments on the system approach, mathematical modeling and programming. The mathematical model of the information system is described and all the characteristics of the IS are given.

scholarly journals СОПОСТАВЛЕНИЕ НАЦИОНАЛЬНЫХ РАМОК КВАЛИФИКАЦИЙ СРЕДСТВАМИ ВЭБ-ОРИЕНТИРОВАННОЙ ИНТЕЛЛЕКТУАЛЬНОЙ ИНФОРМАЦИОННОЙ СИСТЕМЫ

2016 ◽  
Vol 56 (6) ◽  
pp. 121
Author(s):  
Viacheslav V. Osadchyi ◽  
Volodymyr S. Yeremieiev ◽  
Serhii V. Sharov ◽  
Kateryna P. Osadcha ◽  
Serhii L. Koniukhov
Keyword(s):  
Mathematical Model ◽  
Information System ◽  
Comparative Analysis ◽  
Bologna Process ◽  
Output Data ◽  
Academic Mobility ◽  
National Qualifications Framework ◽  
Intelligent Information ◽  
The Bologna Process ◽  
The Mathematical Model

The introduction of the National qualifications framework in Ukraine is considered to be one of the obligatory factors of its entering the European space under conditions of the Bologna process and assuring academic mobility. The paper describes the structure and functional possibilities of web-oriented intelligent information system “Comparison of qualifications frameworks” which contains the database of national qualifications frameworks of other countries, enables users to compare the frameworks and to output data. It is noted that the developed information resource allows to carry out the comparison of different national frameworks supporting user awareness of education in different countries. The mathematical model of the intelligent information system which provides the realization of the quantitative comparative analysis of qualifications standards of European countries is also presented.

The selection of the indicators and the mathematical model for the evaluation of resistance of electronics and information systems to electromagnetic radiation.

2021 ◽  
Vol 5 ◽  
Author(s):  
A.J. Onufrej ◽  
◽  
A.V. Razumov ◽  
A.V. Rassadin
Keyword(s):  
Mathematical Model ◽  
Information System ◽  
Information Systems ◽  
Comparative Analysis ◽  
Electromagnetic Radiation ◽  
Analytical Model ◽  
Probability Of Failure ◽  
The Stability ◽  
The Mathematical Model ◽  
Selection Of

Based on a comparative analysis of the definitions of reliability and resistance, the article substantiates the possibility of using the probability of failure of radio-electronic equipment of an information system (REA IS) as an indicator of resistance to the effects of EMR. The interrelation of these definitions is shown and an analytical model is proposed for assessing the stability of equipment to the effects of a sequence of electromagnetic radiation. As an indicator of resistance, it is proposed to use the probability of failure of the REA during operation.

scholarly journals The mathematical model of cyber attacks on the critical information system

2019 ◽  
Vol 1202 ◽  
pp. 012013 ◽  
Author(s):  
S S Kochedykov ◽  
E V Grechishnikov ◽  
A V Dushkin ◽  
D E Orlova
Keyword(s):  
Mathematical Model ◽  
Information System ◽  
Cyber Attacks ◽  
Critical Information ◽  
The Mathematical Model

DETERMINATION OF PERFORMANCE INDICATORS OF THE TRUCK KrAZ-6510TE

2020 ◽  
pp. 19-26
Author(s):  
Olexandr Pavlenko ◽  
Serhii Dun ◽  
Maksym Skliar
Keyword(s):  
Mathematical Model ◽  
Surface Friction ◽  
Building Structures ◽  
Maximum Torque ◽  
Military Equipment ◽  
Military Vehicles ◽  
Force Magnitude ◽  
Vehicle Mobility ◽  
The Mathematical Model

In any economy there is a need for the bulky goods transportation which cannot be divided into smaller parts. Such cargoes include building structures, elements of industrial equipment, tracked or wheeled construction and agricultural machinery, heavy armored military vehicles. In any case, tractor-semitrailer should provide fast delivery of goods with minimal fuel consumption. In order to guarantee the goods delivery, tractor-semitrailers must be able to overcome the existing roads broken grade and be capable to tow a semi-trailer in off-road conditions. These properties are especially important for military equipment transportation. The important factor that determines a tractor-semitrailer mobility is its gradeability. The purpose of this work is to improve a tractor-semitrailer mobility with tractor units manufactured at PJSC “AutoKrAZ” by increasing the tractor-semitrailer gradeability. The customer requirements for a new tractor are determined by the maximizing the grade to 18°. The analysis of the characteristics of modern tractor-semitrailers for heavy haulage has shown that the highest rate of this grade is 16.7°. The factors determining the limiting gradeability value were analyzed, based on the tractor-semitrailer with a KrAZ-6510TE tractor and a semi-trailer with a full weight of 80 t. It has been developed a mathematical model to investigate the tractor and semi-trailer axles vertical reactions distribution on the tractor-semitrailer friction performances. The mathematical model has allowed to calculate the gradeability value that the tractor-semitrailer can overcome in case of wheels and road surface friction value and the tractive force magnitude from the engine. The mathematical model adequacy was confirmed by comparing the calculations results with the data of factory tests. The analysis showed that on a dry road the KrAZ-6510TE tractor with a 80 t gross weight semitrailer is capable to climb a gradient of 14,35 ° with its coupling mass full use condition. The engine's maximum torque allows the tractor-semitrailer to overcome a gradient of 10.45° It has been determined the ways to improve the design of the KrAZ-6510TE tractor to increase its gradeability. Keywords: tractor, tractor-semitrailer vehicle mobility, tractor-semitrailer vehicle gradeability.

EXPERIMENTAL STUDIES OF CAR PROPERTIES ON A PHYSICAL MODEL

2019 ◽  
pp. 10-16
Author(s):  
Oleksii Timkov ◽  
Dmytro Yashchenko ◽  
Volodymyr Bosenko
Keyword(s):  
Mathematical Model ◽  
Remote Control ◽  
Physical Model ◽  
Model Experiment ◽  
Experimental Studies ◽  
Electrical Energy ◽  
Short Term ◽  
Motor Current ◽  
Memory Card ◽  
The Mathematical Model

The article deals with the development of a physical model of a car equipped with measuring, recording and remote control equipment for experimental study of car properties. A detailed description of the design of the physical model and of the electronic modules used is given, links to application libraries and the code of the first part of the program for remote control of the model are given. Atmega microcontroller on the Arduino Uno platform was used to manage the model and register the parameters. When moving the car on the memory card saved such parameters as speed, voltage on the motor, current on the motor, the angle of the steered wheel, acceleration along three coordinate axes are recorded. Use of more powerful microcontrollers will allow to expand the list of the registered parameters of movement of the car. It is possible to measure the forces acting on the elements of the car and other parameters. In the future, it is planned to develop a mathematical model of motion of the car and check its adequacy in conducting experimental studies on maneuverability on the physical model. In addition, it is possible to conduct studies of stability and consumption of electrical energy. The physical model allows to quickly change geometric dimensions and mass parameters. In the study of highway trains, this approach will allow to investigate the various layout schemes of highway trains in the short term. It is possible to make two-axle road trains and saddle towed trains, three-way hitched trains of different layout. The results obtained will allow us to improve not only the mathematical model, but also the experimental physical model, and move on to further study the properties of hybrid road trains with an active trailer link. This approach allows to reduce material and time costs when researching the properties of cars and road trains. Keywords: car, physical model, experiment, road trains, sensor, remote control, maneuverability, stability.

RESEARCH OF INDICATORS OF A VEHICLE WITH A DIESEL WORKING ON DIESEL AND DIESEL GAS CYCLES USING THE MATHEMATICAL MODEL

2020 ◽  
pp. 14-19
Author(s):  
Serhii Kovbasenko ◽  
Andriy Holyk ◽  
Serhii Hutarevych
Keyword(s):  
Mathematical Model ◽  
Diesel Engine ◽  
Environmental Performance ◽  
Energy Performance ◽  
Dual Fuel ◽  
Fuel System ◽  
Compressed Natural Gas ◽  
Diesel Vehicles ◽  
Diesel Cycle ◽  
The Mathematical Model

The features of an advanced mathematical model of motion of a truck with a diesel engine operating on the diesel and diesel gas cycles are presented in the article. As a result of calculations using the mathematical model, a decrease in total mass emissions as a result of carbon monoxide emissions is observed due to a decrease in emissions of nitrogen oxides and emissions of soot in the diesel gas cycle compared to the diesel cycle. The mathematical model of a motion of a truck on a city driving cycle according to GOST 20306-90 allows to study the fuel-economic, environmental and energy indicators of a diesel and diesel gas vehicle. The results of the calculations on the mathematical model will make it possible to conclude on the feasibility of converting diesel vehicles to using compressed natural gas. Object of the study – the fuel-economic, environmental and energy performance diesel engine that runs on dual fuel system using CNG. Purpose of the study – study of changes in fuel, economic, environmental and energy performance of vehicles with diesel engines operating on diesel and diesel gas cycles, according to urban driving cycle modes. Method of the study – calculations on a mathematical model and comparison of results with road tests. Bench and road tests, results of calculations on the mathematical model of motion of a truck with diesel, working on diesel and diesel gas cycles, show the improvement of environmental performance of diesel vehicles during the converting to compressed natural gas in operation. Improvement of environmental performance is obtained mainly through the reduction of soot emissions and nitrogen oxides emissions from diesel gas cycle operations compared to diesel cycle operations. The results of the article can be used to further develop dual fuel system using CNG. Keywords: diesel engine, diesel gas engine, CNG

Sign in / Sign up

Export Citation Format

Share Document