Holovko V.
Shtofel O.
Krasikov I.

Abstract
The growing of high-strength low-alloy steels use in the welded metal structures manufacture is accompanied by an increase in the requirements for the reliability of prediction results in the “composition-structure-properties” system. The fractal analysis methods use makes it possible to establish a metal structure characteristics numerical parameterization, the metallographic analysis of which gave only a qualitative assessment. The article shows the fractal analysis possibilities for the numerical evaluation of such of the structure of weld metal characteristics as the total length of grain boundaries, the distribution of dislocations at the grains structural boundaries, the distribution density of non-metallic inclusions accumulations with a distance less than 5r from one another. Thar was show the possibility of the structure and non-metallic inclusions numerical parametrization in the “structure-fractal-properties” system for predicting the mechanical properties of the low-alloy high-strength steels weld metal

Keywords: low-alloy steel; metallographic; fractal analysis; metal structure; non-metallic inclusions; mechanical properties.

Нalan O.
PhD, associate professor of the department of information technologies
of the State University of Infrastructure and Technologies,
Kyiv, Ukraine

Dovgenko S.
student (master’s degree) of the State University of Infrastructure and Technology,
 Kyiv, Ukraine

 Abstract
This article examines the role of apps in encouraging physical activity and engaging people to spend more time outdoors.  This article discusses the role of apps in encouraging physical activity and getting people to spend more time outdoors. The concept of a travel app that promotes healthy lifestyles and social interaction is considered.

Keywords: health, app for walking, algorithm for generating tourist routes, tourism, app for improving health.

Нalan O.
PhD, associate professor of the department of information technologies
of the State University of Infrastructure and Technologies,
Kyiv, Ukraine

Dovgenko O.
student (master’s degree) of the State University of Infrastructure and Technology,
Kyiv, Ukraine

 Abstract
This article is dedicated to the topic of developing software to improve decision-making processes and gain a competitive advantage. Accelerating data collection and processing for commercial institutions.

Keywords: software, decision-making, data collection and processing, data mining, automation.

Kazimov  M.
Doctor of philosophy in technical sciences, associate professor  Senior scientific worker at  Institute of Natural Resources,
Ministry of Science and Education of Azerbaijan, Baku

Aliyev M.
Doctor of philosophy in physics, associate professor
The head of the department of “Transport engineering and technical disciplines”
Nakhchivan State University, Nakhchivan

Abstract
The article views the characteristics of mountain-valley winds in the territory of the Nakhchivan Autonomous Republic and the processes of the emergence of instant gusts of these winds.

Depending on the complex geographical conditions of the region, the characteristics of mountain-valley winds, their curvilinear flow around mountain valleys and narrow passages, and the dynamics of wind speed were analyzed, and the results of scientific research conducted to determine the current wind potential of Nakhchivan Autonomous Republic were shown.

The results of the scientific research conducted on the causes and development of the instant wind gusts in the territory of the Nakhchivan Autonomous Republic have been shown. The impact of sudden wind gust on the environment was analyzed.

The researches caried out fully confirm the existence of the instant wind gust in the territory of Nakhchivan Autonomous Republic and how dangerous it is.

 Keywords: mountain-valley winds, instant wind gust, shower, thunderstorm, vortex, air temperature, relief of the area.