Search
Now showing items 21-30 of 31
Mathematical description of imaging processes in ultra-wideband active aperture synthesis systems using stochastic sounding signals
(ХАІ, 2021)
Mathematical models of the fields of stochastic ultra-wideband signals that are necessary for solving problems of aperture synthesis of images using active radar methods are presented. The expediency of using V-transformations ...
Two-step providing of desired quality in lossy image compression by SPIHT
(ХАІ, 2020)
This paper considers the application of the two-step method in an encoder based on a discrete wavelet trans-form (DWT).
Method and information technology to research the component architecture of products to justify investments of high-tech enterprise
(ХАІ, 2021)
The tasks analyzed the product component architecture innovation and investment attractiveness, justify and select the diversified portfolio of orders, simulate and assess orders portfolio feasibility are stated and solved. ...
Exploring timeout as a performance and availability factor of distributed replicated database systems
(ХАІ, 2020)
In the paper, we consider the role of the application timeout which is the fundamental part of all distributed fault tolerance mechanisms working over the Internet and used as the main error detection mechanism here. The ...
Motions models of a two-wheeled experimental sample
(ХАІ, 2021)
The subject of study is the physical processes of translational and angular motion of a two-wheeled experimental sample. The goal is to develop physical, mathematical, and graphic models of the translational and angular ...
Performance evaluation of various deployment scenarios of the 3-replicated cassandra NoSQL cluster on AWS
(ХАІ, 2021)
A concept of distributed replicated NoSQL data storages Cassandra-like, HBase, MongoDB has been proposed to effectively manage Big Data set whose volume, velocity and variability are difficult to deal with by using the ...
Simulation and forecasting of the influenza epidemic process using seasonal autoregressive integrated moving average model
(ХАІ, 2021)
The study aims to develop a seasonal autoregressive integrated moving average (SARIMA) model for influenza epidemic process simulation and to investigate the experimental results of the simulation. The work is targeted at ...
Application of dynamic programming approach to computation of atomic functions
(ХАІ, 2021)
The special class of atomic functions is considered. The functions considered are used in discrete atomic compression (DAC) of digital images. The algorithm DAC is lossy and provides better compression than JPEG, which is ...
Data pre-processing to increase the quality of optical text recognition systems
(ХАІ, 2021)
The subject of study in the article is the formulation of a modern concept of improving the quality of work of optical recognition systems by using a set of various algorithms for preprocessing document images at the user's ...
Methods and technologies for ensuring cybersecurity of industrial and web-oriented systems and networks
(ХАІ, 2021)
The subject matter of the article is methods and technologies of ensuring the cybersecurity of industrial and web-oriented systems and networks, training of cybersecurity specialists during the acquisition of professional ...