This paper proposes an approach to suppressing the elastic vibration and propellant sloshing in attitude control of a high slenderness ratio rocket.The main method is to combine a variable-gain robust observer with a variable structure controller for the purpose of Hats attitude stability and elastic vibration suppression.A variable-gain robust obs
In 3D digital urban planning applications, a model file may contain multiple building models, however, a single model or model component are very often needed to be used and operated independently.This paper studies 3D model segmentation and blanking technology Hats in 3D urban planning.Three kinds of blanking and segmentation methods are in detail
The main nonmedullary form of thyroid cancer is papillary thyroid Baby Health carcinoma (PTC) that accounts for 80-90% of all thyroid malignancies.Only 3-10% of PTC patients have a positive family history of PTC yet the familiality is one of the highest of all cancers as measured by case control studies.A handful of genes have been implicated accou
Soil mesofauna plays a key role in maintaining soil health by supporting the decomposition of organic matter, nutrient cycling and the maintenance of Originals Ribbed Tank soil structure.In this study of Slovenian agricultural ecosystems, we used four modifications of the QBS index, a soil biological quality index based on soil mesofauna.We compare