Cognitive satellite communications (SatCom) is considered to be able to alleviate the bottleneck of spectrum resource shortage due to traditional spectrum allocation.This paper focuses on a special scenario where Paddles the frequency band of SatCom is recommended by the terrestrial terminal according to its spectrum sensing results.Further speakin
This paper discusses the impact of air pollution on medical expenditure in eastern, central, and western China by applying the fixed-effect model, random-effect model, and panel threshold regression model.According to theoretical and empirical analyses, there are different relationships between the two indexes in different regions of China.For east
Background.Fewer studies have attempted to address elder abuse and neglect in Bangladesh despite its widespread prevalence and fatal consequences.Objectives.To collect qualitative facts concerning the nature of elder abuse and neglect in Bangladesh and to find out the causes and impacts of this malpractice.Material and methods.The study categorized