The global spread of COVID-19 has not been effectively controlled.It poses a significant threat to public health and global economic development.This paper uses a mathematical model with vaccination and isolation treatment to study the transmission dynamics of COVID-19.In this paper, some basic properties of the model are analyzed.The control repro
The capture of non-target species is a conservation issue in many commercial fisheries.Bycatch reduction devices (BRDs) are commonly used as mitigation tools to improve selectivity of fishing gear and thus reduce bycatch.The aim of this paper was to refine a simple #Stirrups BRD to exclude 4 species of freshwater turtles from commercial fyke nets i
In order to complete the tasks of demand perception (perception), data collection (communication), and material delivery (logistics) at disaster relief sites in multi-UAV emergency scenarios, a two-stage solution framework was proposed for multi-UAV path Vanadyl planning that integrated perception, communication, and logistics objective considering
The developed model of the WWER-1000 reactor using MCNP6.2 (Monte Carlo N-Particle Transport Linear Actuator Code) includes the detailed core taking into account the design of the fuel assemblies, as well as the baffle, the lower plenum, the fuel support columns, the core barrel, a downcomer, and the reactor pressure vessel.It allows implementing m