Background.The learning process in physical education requires an appropriate and effective learning method.It is incumbent upon physical education teachers to determine learning methods that take into account the conditions of their students.Objectives.The objective of this study was to conduct a systematic review of the development Accessories of
Abstract Background Teleost paired fins are composed of two endoskeletal domains, proximal and distal radials, and an exoskeletal domain, the fin ray.The zebrafish pectoral fin displays elaborately patterned radials along the anteroposterior (AP) axis.Radials are considered homologous to tetrapod limb skeletons, and their patterning mechanisms in e
The aim of this study was to propose and evaluate a very small wind turbine (VSWT) that competes with commercial grid-connected VSWTs in terms of simplicity, robustness and price.Its main components are a squirrel-cage induction generator (SCIG) driven by a frequency converter.The system has a direct-drive shaft, and may be constructed with commerc
High-frequency surface wave radar (HFSWR) can detect and continuously track ship objects in real time and beyond the horizon.When ships navigate in a sea area, their motions in a time period form a scenario.The diversity and complexity of the motion scenarios make it difficult to accurately track ships, in which failures such as track fragmentation
This paper performs a detailed analysis and explores optimal control strategies for a fractional-order SIV epidemic model, incorporating a nonmonotonic incidence rate.In this paper, the population of vaccinated individuals is included in the disease dynamics model.After proving the 110 non-negative boundedness of the fractional-order SIV model, we