Grothendieck Toposes are often considered as generalized spaces; indeed, every space gives rise to a topos of sheaves, and various invariants and constructions from (algebraic) topology can be generalized to the level of toposes. In this talk, I will introduce a newly discovered invariant called the isotropy group of a topos and illustrate by considering special cases such as continuous group a...

In order to forage and to provision oVspring eVectively, seabirds negotiate a complex of behavioural, energetic, environmental and social constraints. In Wrst tests of GPS loggers with seabirds in North America, we investigated the foraging tactics of free-ranging northern gannets (Sula bassana) at a large and a mediumsized colony that diVered in oceanography, coastal position and prey Welds. G...

AIM This paper is a report of a study of how a cohort of African American men recognized and expressed symptoms of depression, and how depression affected their lives. BACKGROUND Major depressive disorder has had global financial consequences in the form of healthcare visits, lost work hours, and disruption of family lives. Early recognition of depression and engagement of depressed individua...

Matrix factorization (MF) has evolved as one of the better practice to handle sparse data in field of recommender systems. Funk singular value decomposition (SVD) is a variant of MF that exists as state-of-the-art method that enabled winning the Netflix prize competition. The method is widely used with modifications in present day research in field of recommender systems. With the potential of ...

Este estudo faz uso do samba-enredo História de ninar gente grande, da Escola Samba carioca Estação Primeira Mangueira (2019), e funk Céu pipa, composto por MC Marks (2020), como fontes históricas possíveis para pensar o protagonismo negro na história seu silenciamento no currículo formal escolar. Objetiva perquirir a importância práticas culturais constituição dos saberes históricos em ações e...

The integral of a function defined on the half-plane along the semi-circles centered on the boundary of the half-plane is known as the circular averages transform. Circular averages transform arises in many tomographic image reconstruction problems. In particular, in synthetic aperture radar (SAR) when the transmitting and receiving antennas are colocated, the received signal is modeled as the ...