Three-row roller slewing bearings are the core components of large-scale rotating equipment. It has a large structural size and is subjected to heavy loads, which requires extremely high carrying capacity. The effect finite element mesh on capacity accuracy three-row bearing investigated. A local model established analyze contact area between raceway, compared with Hertz theory verify reasonabl...

The water carrying capacity and the state are two similar concepts, there no clear boundaries between them, so exists confusion during evaluation process. Additionally, current methods cannot meet dynamic change requirements under different control measures. This study emphasizes difference concepts points out that core of is determination thresholds. In contrast, a evaluation. A coupled iterat...

Abstract The combined weight method (CWM) for comprehensive water resources carrying capacity evaluation is proposed in this paper to evaluate the regional capacity. Firstly, accelerating genetic algorithm based on analytic hierarchy process (AGA-AHP) improved optimize expert matrix and determine subjective weight, which entropy used objective formula put forward get of index. Secondly, certain...

Autonomous sprayer UAVs are one of the most used aerial machines in modern agriculture. During flight missions, some common narrow obstacles appear flying zone. These non-detectable from satellite images and biggest challenges for autonomous farmland. This work introduces an obstacle avoidance architecture specifically UAVs. has generality spraying UAV problem, it reduces reliance on global map...