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Safety-assured high-speed navigation for MAVs.
Sci Robot
January 2025
Department of Mechanical Engineering, University of Hong Kong, Pokfulam, Hong Kong, China.
Micro air vehicles (MAVs) capable of high-speed autonomous navigation in unknown environments have the potential to improve applications like search and rescue and disaster relief, where timely and safe navigation is critical. However, achieving autonomous, safe, and high-speed MAV navigation faces systematic challenges, necessitating reduced vehicle weight and size for high-speed maneuvering, strong sensing capability for detecting obstacles at a distance, and advanced planning and control algorithms maximizing flight speed while ensuring obstacle avoidance. Here, we present the safety-assured high-speed aerial robot (SUPER), a compact MAV with a 280-millimeter wheelbase and a thrust-to-weight ratio greater than 5.
View Article and Find Full Text PDFStandardised activities in wheelchair rugby, comparison between athletes with coordination impairment and athletes with other impairments.
Front Sports Act Living
January 2025
Peter Harrison Centre for Disability Sport, School of Sport, Exercise, and Health Sciences, Loughborough University, Loughborough, United Kingdom.
Introduction: To determine if athletes with coordination impairment (CI) can continue playing wheelchair rugby (WR), while an evidence-based classification system, including impairment tests for CI is not yet available. This is a defensible practise if they show similar activity limitations as athletes with other eligible impairment types (OI) within the same sports class.
Methods: Standardised activities were measured in 58 elite WR athletes; 14 with CI and 44 with OI.
Long-term effect of short-term exercise instructions in Japanese patients with type 2 diabetes: observation study after randomized controlled study.
Diabetol Int
January 2025
Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
Aims: To clarify the long-term effects of short-term exercise instructions by physical therapists in Japanese people with type 2 diabetes (T2D).
Methods: This was a follow-up study of 2 years after randomized controlled study of short-term exercise instructions included 18 patients (5 in the non-intervention and 13 in the intervention groups). Motor skills, including 6 min walk test scores, and transtheoretical model was evaluated at baseline (week 0) the end of the study of the previous study (week 8), and 2 years after (2 years).
Social vocalizations indicate behavioural type in bats.
Proc Biol Sci
January 2025
Museum für Naturkunde, Leibniz-Institute for Evolution and Biodiversity Science, Invalidenstr 43, Berlin 10115, Germany.
Vocalizations play a crucial role in the social systems of many animals and may inadvertently reveal behavioural characteristics of the sender. Bats, the second largest mammalian order, rely extensively on vocalizations owing to their nocturnal lifestyle and complex social systems, making them ideal for studying links between vocalizations and consistent behavioural traits. In this study, we developed a new testing regime to investigate whether consistent individual vocalization differences in nectarivorous bats are associated with specific behavioural types.
View Article and Find Full Text PDFThe breakthroughs in communication distance and data rate have been eagerly anticipated by scientists in the area of underwater wireless optical communication (UWOC), which is seriously limited by the obvious aquatic attenuation in underwater channels. The high-power laser source and ultra-sensitive photodetector are straightforward in extending the UWOC distance. However, nonlinear impairments caused by bandwidth-limited high-power transmitters and sensitive receivers severely degrade the data rate of long-distance UWOC.
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