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stella immanuel
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However, to better capture the temporal information proper to video content, the use of 3D convolutions has emerged (Kim et al., 2007; Lima et al., 2017). One can also consider temporal information using the motion extracted from successive frames, such as the optical flow. Crasto et al., 2019). These methods also raise the question of how to fuse the different modalities (Feichtenhofer et al., 2016; Martin, 2020). In (Luvizon et al., 2018; Rogez et al., 2020), the estimated pose is used jointly with these two modalities to perform action classification. In (Martin et al., 2021) all the three modalities are used and fused in order to perform stroke classification. As part of the task organization, for the first time since the beginning of the Sports Video task (in 2019 (Martin et al., 2019b)), we decided to provide a baseline to alleviate minor aspects of the task, such as video and xml processing; and help the participants in their submission. The physics of brown dwarfs has continuously improved since the discovery of these astrophysical bodies. The first important developments were devoted to the description of their mechanical structure, with the derivation of an appropriate equation of state, and the modelling of their atmosphere characterised by strong molecular absorption. New challenges are arising with progress in observational techniques which provide data of unprecedented accuracy. The goal of this chapter is to describe some of the current challenges for the theory of brown dwarfs. Those challenges concerns atmospheric dust and cloud, non-equilibrium atmospheric chemistry, the effect of rotation and magnetic fields on internal structure and the very early phases of evolution characterised by accretion processes. The field remains lively as more and more high quality observational data become available and because of increasing discoveries of exoplanets. Indeed, many physical properties of giant exoplanets can be described by the same theory as brown dwarfs, as described in this chapter. por que el cielo es azul

















































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