Запропоновано застосування квадратичних фрактальних перетворень до шифрування і дешифрування зображень в градаціях сірого кольору.
The use of quadratic fractal transforms to encryption and decryption of images in grayscale color.
The paper is devoted to the development of a wireless noise-proof system with feedback based on LoRa
technology. The relevance of the work lies in the fact that the issue of protecting your property from burglars is
always on the agenda. It is also important that the alarm system is universal, it should also be an inexpensive
thing that would pay for itself in a short period of time, while at the same time providing a high level of
protection. Currently, the next problem is that to buy even a simple protection system you will have to pay
The aim of the paper is to present the research analysis and author’s practical experiences in implementing modern IT solutions. These solutions concern, in particular building and implementing the Integrated Multilevel IT Systems for Logistics, Finance and HR operating in the defense and security services. The detailed research was also on possibility of implementing systems for product coding, electronic shopping and distance learning.