A dynamic model that considers both linear and complex nonlinear effects extensively benefits the model-based controller development.However, predicting a detailed aerodynamic model with good accuracy for unmanned aerial vehicles (UAVs) is challenging due to their irregular here shape and low Reynolds number behavior.This work proposes an approach
Abstract Density-wave fronts in a vibrofluidized wet granular layer undergoing a gas-liquid-like transition are investigated here experimentally.The threshold of the instability is governed by the amplitude of the vertical vibrations.Fronts, which are curved into a spiral shape, propagate coherently along the circular rim of the container with lead
Across much of Africa, decades of civil war, land reforms, and persecution by humans have decimated wildlife populations.African wild dogs (Lycaon pictus) have declined dramatically during the past decades, but have shown recent natural recolonisation of some hbl5266ca areas.In Angola, they were rediscovered after almost five decades when no survey