Low-altitude economy, as an emerging comprehensive economic form, is widely concerned.Great development potential and strategic value are demonstrated by the low-altitude economy in modern society.However, the Leather development of low-altitude economy also faces with numerous challenges.At present, the coverage of low-altitude area by the ground
Offshore aquaculture fish farming faces labor shortage, safety, productivity and high operating cost issues.Unmanned underwater vehicles (UUVs) are being deployed to mitigate these issues.One of their applications is the fish net-pen visual inspection.This paper aims to develop and simulate with high-fidelity several trajectory tracking control sch
INTRODUCTION: The age increases in the will to conceive haveled to an increase in the difficulty of reproduction that is being compensated by the development of assisted reproduction techniques; however, the feelings accompanying their use are the same as in perinatal grief while not always recognized.OBJECTIVE.To explore the feelings of grief of w
Background and objectivesThe purpose of this study was to explore COVID-19 pandemic-related concerns among a racially and ethnically representative sample of older adults in the U.S.Research design and methodsParticipants were 501 English-speaking adults 60 years and older recruited online nationally across the U.S.from Amazon Mechanical Turk (mT
Abstract Brazil was Baby Tee formerly considered a country with intermediate hepatitis B endemicity, with large heterogeneity between Brazilian regions and areas of high prevalence, especially in the Amazon basin.Systematic vaccination of children was initiated in 1998.Between 2004 and 2009, a large population-based study reported decreased prevale