Total number
Full text
Total number
Full text
Number of local repositories
Full text
0216U002340,
0113U002175
,
Methods and means of improving the quality of service data flow based on the local model of the controlled process
Lugovoi Anatolii Vasilyavich,
18-02-2016
Kremenchuk Mykhaylo Ostrogradskiy State University
The aim of this work is to develop theoretical principles, methods and tools to improve the QoS of users based on the concept of a local model of controlled process (LMCP), which increase reliability, fault tolerance and security of computer network in conditions of uncertainty its structure and parameters. The object of research - process of data transfer in computer network. Subject of research - mathematical models of processes and channels of network data transmission, methods and means of ensuring its service quality. For the first time developed the principles of using LMCP in problems of providing quality user service and performed formulation of the basic problems of QoS based on the concept of LMCP. For the first time developed the method of parametric identification of mathematical models of processes data transfer based on the LMCP. Developed basic algorithm of synthesis of LMCP for control objects described by ordinary differential equations. Developed a method for creating LMCP in the form of control's impact which is equivalent of the effect of external factors, and adapted to the problems of optimal choice in discrete control systems. Developed the mathematical implementation for LMCP and for the identification of parameters of the mathematical model of the data transfer process in the form of differential equations based liquid approach and set-theoretical model of describing the interaction of client-server systems in the problem of intercepting and analyzing data packets to relational database management systems (DBMS). Developed the algorithmic implementation of process of synthesis of local model for the problem of network traffic control based on the basic algorithm RED / ARED and discrete synthesis of local model of the internal structure of the SQL-query package. Developed the software as a multimodules client-server application consisting of services to intercept network traffic at the data link layer model of OSI, optimizing internal content of data packets in period between minimal network load and packet spoofing if exist corresponding LMCP metadata database in real time. Developed the information technology (IT) for management of congestion while providing QoS based on LMCP of data transfer. Developed the IT of external optimization SQL-queries based on building LMCP under uncertainty of physical and logical database structure.
Бельська Вікторія Юріївна
Бугаєць Наталія Сергіївна
Гученко Микола Іванович
Костенко Павло Павлович
Луговой Анатолій Васильович
Славко Олена Геннадіївна
Сохін Наталія Леонідівна
2020-04-02
Updated: 2025-12-16
Saving a scientific data set occurs in two stages:
1.) Creating a data set
Enter the name of the set, a brief description of the set (annotation), and click the “Create set” button. After that, a draft data set will be automatically created, which you can save for further work with the set. The system will redirect you to the “Data set information” page.
2.) Filling in the data
On the “Data set information” page, you need to fill in all the fields related to the data set and upload the files.
Please note! Each file is uploaded separately. This is done to ensure the stable operation of the system.
Once you have filled in the information about the scientific data set and added the necessary files, you can save the draft or send the data to the system.
Please note! Once the data has been sent, you cannot change it.
Drafts are necessary for storing the data set and editing it before sending.
All accounts on the NRA website go through a standard registration procedure and are verified. However, in order to obtain additional features, such as publishing open reviews of academic texts, verification by affiliation is required.
To obtain the status “verified”, you must change your primary email address to a corporate one, which is tied to a scientific or educational institution.
For example: user@ukrintei.ua, user@nas.gov.ua
After confirming your corporate email address, your account will be automatically verified by affiliation.
If your email address is corporate, but your account does not have a verification mark, you need to write to us at the email address NRAT@ukrintei.ua. After verification, we will add your address to the database, and your account will be verified.
After completing the verification procedure for affiliation, you can change the primary email address to a convenient one for you, without losing your status during the current verification.
You only need to verify for affiliation once.
* We use corporate addresses from the Unified State Database on Education and the State Register of Scientific Institutions Supported by the State
To search for news published on the official website of NRАT in the “News” section, you need to enter one word, several words, or an exact phrase in the search field. Different terms are separated by spaces.
The search is performed everywhere – in the title and the news text.
For a more comprehensive result, it is recommended to use word stems (parts of words without endings).
When using multiple words for the search, they are combined using one of the logical methods described below.
By default, the logical connector “and” is used. In this case, search results will include all news releases that contain the specified words, even if they are located separately from each other and are in different parts of the text.
Example: Search phrase: OECD report. Search result: all news containing the words “report” and “OECD” in the text and in the title, both together and separately.
If a phrase or phrase is enclosed in quotation marks (“), the results will include all publications where this exact phrase or phrase is found.
Example: Search phrase: “OECD report.” Search result: all news containing the exact phrase “OECD report.”
If you know the publication date of the news or are interested in a specific time frame in which they were published on the website, you can select such a date or date range in the additional field that looks like a calendar. The date is entered in the format year-month-day and confirmed by clicking on the corresponding date in the calendar dropdown. You can enter a date or choose one by browsing through the calendar by months and years. By default, the interval starts from the oldest date (2018-01-23) and ends with the current date.
You can also use one or more hashtags, which are located under the search field on the right side of the “News” page.
Please note: The search for academic texts is carried out in a separate search window at the following link https://nrat.ukrintei.ua/searchdb.
