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In 1971, Roger Payne published the paper ‘Acoustic Location of Prey by Barn Owls (Tyto alba)’. Payne had conducted the underlying experiments at Cornell University in partial fulfilment of the requirements for his PhD, which he obtained in 1961. When the paper was published, Payne, a zoologist, was a professor at Rockefeller University. By that time he was already famous for his discovery of so...

We study propagation property for one-dimensional nonlinear diffusion equations with convection-absorption, including the prototype model ∂t(u m)− ∂x(|∂xu|p−1∂xu)− μ|∂xu|q−1∂xu+ λu = 0, where m, p, q, k > 0, and n-dimensional simplified variant ∂t(u )−Δp+1u = 0, where Δp+1u = div (|∇u|p−1∇u). Among the conclusions, we make complete classification of the parameters in the first equation to disti...

Tian Xu is professor and vice chairman of Genetics at Yale University and a Howard Hughes Medical Institute investigator. His lab is working to understand the mechanisms of tumorigenesis and metastasis using Drosophila and mouse models. Notably, Dr. Xu has developed the powerful piggyBac transposon mutagenesis system, which has allowed investigators to perform forward genetics in mammalian mode...

Partial Order Reduction (POR) is a technique that reduces the search space by recognizing interchangeable orders between actions and expanding only a subset of all possible orders during the search. It has been extensively studied in model checking and has proven to be an enabling technique for reducing the search space and costs. Several POR algorithms have been proposed in planning, including...