Hyperspectral images (HSIs) include hundreds of spectral bands, which lead to Hughes phenomenon in classification task and decrease the classification accuracy.Feature selection can remove redundant and noisy features in the HSIs to overcome this phenomenon.In real applications, we may face a HSI scene with only a few labeled samples.Meanwhile, the
Special attention and efforts to protect from or reduce health-related outcomes of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus triggering coronavirus disease 2019 (COVID-19), should be applied in susceptible populations, including frail older people.In particular, the early death cases occurred primarily in older people
Because of logistical constraints little previous information exists on ivory gulls (Pagophila eburnea) in the waters around Svalbard and the east coast of Greenland in late winter/early spring.The Swedish Arctic Ocean 2002 expedition investigated these areas at that time of year and in this paper I report on the observations of ivory gulls made du
Human knee joints move smoothly under high load conditions due to articular cartilage and synovial fluid.Much attention is paid to the role of proteoglycans.It is suggested that a part of proteoglycan forms aggregate on the cartilage surface, making a polymer brush, which has an important adi-2 pro fs r black edition role in lubrication.In order to
For a scenario of a close flyby of a compact star near a spinning black hole, we provide analytical and numerical estimates for the shift of trajectory periastron due to relativistic (beyond mustang bitless bridle post-Newtonian) effects.More specifically, we derived a generalized expression (not limited to quasi-circular or elliptical orbits) dire