The purpose of the study is to analyse quantitative and qualitative composition registered in Ukraine 2020 agricultural forestry tractors (hereinafter - tractors) identify areas for improvement technical regulatory elements their commissioning operation. Research methods. methodological basis work analysis generalization data on tractors, as well certain regulation (technical regulations, stand...

We analyse conformal gauge, or isotropic, singularities in cosmological models in general relativity. Using the calculus of tractors, we find conditions in terms of tractor curvature for a local extension of the conformal structure through a cosmological singularity and prove a local extension theorem along a congruence of time-like conformal geodesics.

The food production process across the developing world is under huge pressure pertaining to mounting challenges like water shortage, low fertility of land, climatic variations, lack technological progress, and many other unforeseen challenges. This study explores impact crises on production. index was used for relationship measured in availability (million-acre feet). Other explanatory variabl...

In order obtain suitable and effective farm machinery performance besides higher crop yield, on time farm machinery field operations are essential. Farm tractors are important machines that used for soil tillage, crop planting and protection. It is even used for harvesting crops in some areas. Thus, any failure in farm tractors influences the series of field operations. Farm managers are usuall...

In the new agricultural scenarios, the interaction between autonomous tractors and a human operator is important when they jointly perform a task. Obtaining and exchanging accurate localization information between autonomous tractors and the human operator, working as a team, is a critical to maintaining safety, synchronization, and efficiency during the execution of a mission. An advanced loca...