Eye tracking (oculography) is a technology that allows recording the direction of human gaze on a visual stimulus. It’s application can provide researchers with valuable data on which elements of the environment are most attractive in various contexts, in areas such as marketing, psychology, etc. The aim of this work is to identify the pattern of human attention distribution on visual stimulus objects of different sizes using eye tracking technology. A webcam was used to record the subjects’ gaze movements while they were studying experimental images. The results of the experiments showed that larger objects in visual stimuli receive higher attention priority than smaller objects. This observation is true for both human-created works and images created by artificial intelligence (Kandinsky 3.1 is used in this study). The obtained results of the study will improve our understanding of how people perceive visual information, which can contribute to the creation of more effective approaches to interface development.

Keywords: eye tracking technology, attention priority, region of interest, number of eye gaze registrations, artificial intelligence, Vincent Van Gogh

Effect of water-soluble polymers additive and surface treatment on particle size distribution are shown in this article.

Keywords: electrolytic copper powder, water-soluble polymer, polyvinylpyrrolidone, polyacrilamide, electropolishing, atomic force microscopy

The effect of two surface-active substances (SAS) - polyvinylpyrrolidone (PVP) and polyacrilamide (PAA) on formation kinetics of anodic synthesized electrolytes for copper powders production was reviewed, as well as product properties. It was found that the copper powder properties defined by polymer film of PVP and PAA formed on cathode surface. Nanosized particles percentage increasing by dints of copper ions direct discharge from ammonia complex ions provided by polymer film. In the electrolyte containing PAA is possible to obtain copper powder with nanosized (less 100 nm) particles content of 50,2%, average size in nanosized range is 43nm with needle-dendrite particle shape

Keywords: electrolytic copper powder, vibrating cathode, polarization curve, chronopotentiometry, potential dip after current tripping, particle size distribution, water soluble polymer, nanosized particle, ammonia chloride, polyvinylpyrrolidone, polyacrilamide, am

The analytical decision on definition of a forming wall of the bunker of the greatest capacity is provided in article among all bunkers having identical entrance and exhaust outlets. Such bunkers are intended for a hydraulic type of the expiration of bulk. They reduce a pulsation loose at its exit from the outlet and reduce extent of influence of the dynamic arches by account characteristics of the bunker.

Keywords: sliding lines, entrance openings, outlets, bunker, loose body, expense of the loose.