NeMo: 3D Neural Motion Fields from Multiple Video Instances of the Same Action

The task of reconstructing 3D human motion has wideranging applications. The gold standard Motion capture (MoCap) systems are accurate but inaccessible to the general public due to their cost, hardware and space constraints. In contrast, monocular human mesh recovery (HMR) methods are much more accessible than MoCap as they take single-view videos as inputs. Replacing the multi-view Mo- Cap systems with a monocular HMR method would break the current barriers to collecting accurate 3D motion thus making exciting applications like motion analysis and motiondriven animation accessible to the general public. However, performance of existing HMR methods degrade when the video contains challenging and dynamic motion that is not in existing MoCap datasets used for training. This reduces its appeal as dynamic motion is frequently the target in 3D motion recovery in the aforementioned applications. Our study aims to bridge the gap between monocular HMR and multi-view MoCap systems by leveraging information shared across multiple video instances of the same action. We introduce the Neural Motion (NeMo) field. It is optimized to represent the underlying 3D motions across a set of videos of the same action. Empirically, we show that NeMo can recover 3D motion in sports using videos from the Penn Action dataset, where NeMo outperforms existing HMR methods in terms of 2D keypoint detection. To further validate NeMo using 3D metrics, we collected a small MoCap dataset mimicking actions in Penn Action,and show that NeMo achieves better 3D reconstruction compared to various baselines

AVALIAÇÃO DOS IMPACTOS ECONOMICOS E SOCIAIS DA ADOÇÃO DA TECNOLOGIA DE MÓDULOS MÚLTIPLOS DE BENEFICIAMENTO DA CASTANHA DE CAJU EM TRÊS COOPERATIVAS DO ESTADO DO CEARÁ.

A metodologia de avaliação de impactos de programas/projetos/intevenções tecnológicas baseia-se na identificação e posterior mensuração ex-post da importância de transformações de aspectos da realidade resultantes do desenvolvimento, adoção e difusão de um programa de pesquisa, programa tecnológico e/ou inovação tecnológica. A metodologia esta baseada nas diferentes possibilidades de interação das dimensões da avaliação procurando preservar suas características particulares em um mesmo marco metodológico no qual estão envolvidos direta ou indiretamente atores relacionados com o objeto da avaliação e que percebem os impactos de forma heterogênea, a partir das suas situações particulares. A análise utilizou para a avaliação de impacto econômico a mensuração do excedente econômico gerado pela alteração da estrutura de custos de produção da amêndoa de castanha de caju com a adoção do novo perfil tecnológico e a Metodologia Sistema de Avaliação de Impacto da Inovação Tecnológica Agropecuária, segmentos social (Ambitec Social) na avaliação comparativa de impactos econômicos e sociais de três Minifabricas de castanha de caju e três Unidades de beneficamento de castanha, nos Estados do Ceará e Rio Grande do Norte, respectivamente. -------------------------------------------The impacts of programs/projects/ technology interventions evaluation methodology is based on the identification and subsequent ex post measurement of reality aspects transformations resulting from the development, adoption and diffusion of a research program, technological program and/or technological innovation. The methodology is based on the different possibilities of interaction of the size of the assessment looking preserve its particular characteristics in the same methodological framework in which are involved directly or indirectly related to the actors object of the evaluation and realize that the impacts of heterogeneous way, from their situations. The analysis used for the assessment of economic impact the measurement of the surplus generated by economic change in the structure of production costs of almonds, chestnuts, cashews with the adoption of new technological profile and Methodology Evaluation System Impact of Technological Innovation of Agriculture, social segments (Ambitec Social) in the benchmarking of economic and social impacts of three Minifabricas of cashew nut, and three units of beneficamento of brown, in the states of Ceara and Rio Grande do Norte, respectively.Análise comparativa, impactos, mini-fábrica, unidades de processamento, caju, benchmarking, impacts, mini-factory, processing units, cashews, Crop Production/Industries, Research and Development/Tech Change/Emerging Technologies,

CIRCLE: Capture In Rich Contextual Environments

Synthesizing 3D human motion in a contextual, ecological environment is important for simulating realistic activities people perform in the real world. However, conventional optics-based motion capture systems are not suited for simultaneously capturing human movements and complex scenes. The lack of rich contextual 3D human motion datasets presents a roadblock to creating high-quality generative human motion models. We propose a novel motion acquisition system in which the actor perceives and operates in a highly contextual virtual world while being motion captured in the real world. Our system enables rapid collection of high-quality human motion in highly diverse scenes, without the concern of occlusion or the need for physical scene construction in the real world. We present CIRCLE, a dataset containing 10 hours of full-body reaching motion from 5 subjects across nine scenes, paired with ego-centric information of the environment represented in various forms, such as RGBD videos. We use this dataset to train a model that generates human motion conditioned on scene information. Leveraging our dataset, the model learns to use ego-centric scene information to achieve nontrivial reaching tasks in the context of complex 3D scenes. To download the data please visit https://stanford-tml.github.io/circle_dataset/

A multilevel hypernetworks approach to capture meso-level synchronisation processes in football

Understanding team behaviours in sports performance requires understanding the interdependencies established between their levels of complexity (micro-meso-macro). Previously, most studies examined interactions emerging at micro- and macro-levels, thus neglecting those emerging at a meso-level (reveals connections between player and team levels, depicted by the emergence of coordination in specific sub-groups of players-simplices during performance). We addressed this issue using the multilevel hypernetworks approach, adopting a cluster-phase method, to record player-simplice synchronies in two performance conditions where the number, size and location of goals were manipulated (first-condition: 6 × 6 + 4 mini-goals; second-condition: Gk + 6 × 6 + Gk). We investigated meso-level coordination tendencies, as a function of ball-possession (attacking/defending), field-direction (longitudinal/lateral) and teams (Team A/Team B). Generally, large synergistic relations and more stable patterns were observed in the longitudinal direction of the field than the lateral direction for both teams, and for both game phases in the first condition. The second condition displayed higher synchronies and more stable patterns in the lateral direction than the longitudinal plane for both teams, and for both game phases. Results suggest: (i) usefulness of hypernetworks in assessing synchronisation of teams at a meso-level; (ii) coaches may consider manipulating these task constraints to develop levels of local synchronies within teams

Structural dynamics of first-order phase transition in giant magnetocaloric La(Fe,Si)13: The free energy landscape

Maximizing the performance of magnetic refrigerators and thermomagnetic energy harvesters is imperative for their successful implementation and can be done by maximizing their operation frequency. One of the features delimiting the frequency and efficiency of such devices is the phase transition kinetics of their magnetocaloric/thermomagnetic active material. While previous studies have described the magnetic component governing the kinetics of the magnetovolume phase transition in La(Fe,Si)13 giant magnetocaloric materials, a comprehensive description of its structural component has yet to be explored. In this study, in situ synchrotron X-ray diffraction is employed to describe the structural changes upon magnetic field application/removal. Long magnetic field dependent relaxation times up to a few hundred seconds are observed after the driving field is paused. The phase transition is found to be highly asymmetric upon magnetic field cycling due to the different Gibbs energy landscapes and the absence of an energy barrier upon field removal. An exponential relationship is found between the energy barriers and the relaxation times, suggesting the process is governed by a non-thermal activation over an energy barrier process. Such fundamental knowledge on first-order phase transition kinetics suggests pathways for materials optimization and smarter design of magnetic field cycling in real-life devices

Ecossistema do turismo de base comunitária: uma análise a partir dos negócios com impacto social em Corumbá-MS/Community-based tourism ecosystem: an analysis of business with social impact in Corumbá-MS

O objetivo é analisar o ecossistema do TBC a partir dos negócios de impacto de Corumbá-MS. Na teoria foram discutidos negócios com impacto, TBC e ecossistema de negócios. A pesquisa tem um caráter exploratório com a abordagem qualitativa. Foram utilizadas entrevistas semiestruturadas. Os sujeitos da pesquisa foram os empreendedores sociais de negócios com impacto de Corumbá-MS. Os dados coletados foram tratados de acordo com a análise de conteúdo. Os negócios com impacto relataram que seguem os preceitos da economia solidária. O Pantanal é conhecido por seu turismo de pesca, e não existe um desenvolvimento de atividades turísticas que aprimoram, ou mesmo influenciam positivamente, os empreendimentos sociais. O fato dos negócios atrelarem suas atividades com as características socioculturais locais pode influenciar no desenvolvimento do TBC. Ecossistema de negócio envolve todos os agentes que podem influenciar um empreendimento de diferentes formas, mas não foi observado no estudo. O foco no turismo da pesca não valoriza os aspetos culturais trabalhados pelos empreendimentos do TBC

Evidence for the associated production of a single top quark and a photon in proton-proton collisions at s=\sqrt{s}= 13 TeV

The first evidence of events consistent with the production of a single top quark in association with a photon is reported. The analysis is based on proton-proton collisions at s=13  TeV and recorded by the CMS experiment in 2016, corresponding to an integrated luminosity of 35.9  fb-1. Events are selected by requiring the presence of a muon (μ), a photon (γ), an imbalance in transverse momentum from an undetected neutrino (ν), and at least two jets (j) of which exactly one is identified as associated with the hadronization of a b quark. A multivariate discriminant based on topological and kinematic event properties is employed to separate signal from background processes. An excess above the background-only hypothesis is observed, with a significance of 4.4 standard deviations. A fiducial cross section is measured for isolated photons with transverse momentum greater than 25 GeV in the central region of the detector. The measured product of the cross section and branching fraction is σ(pp→tγj)B(t→μνb)=115±17(stat)±30(syst)  fb, which is consistent with the standard model prediction.Peer Reviewe

Contactless doping characterization of Ga_2O_3 using acceptor Cd probes

Finding suitable p-type dopants, as well as reliable doping and characterization methods for the emerging wide bandgap semiconductor beta-Ga_2O_3 could strongly influence and contribute to the development of the next generation of power electronics. In this work, we combine easily accessible ion implantation, diffusion and nuclear transmutation methods to properly incorporate the Cd dopant into the beta-Ga_2O_3 lattice, being subsequently characterized at the atomic scale with the Perturbed Angular Correlation (PAC) technique and Density Functional Theory (DFT) simulations. The acceptor character of Cd in beta-Ga_2O_3 is demonstrated, with Cd sitting in the octahedral Ga site having a negative charge state, showing no evidence of polaron deformations nor extra point defects nearby. The possibility to determine the charge state of Cd will allow assessing the doping type, in particular proving p-type character, without the need for ohmic contacts. Furthermore, a possible approach for contactless charge mobility studies is demonstrated, revealing thermally activated free electrons for temperatures above similar to 648 K with an activation energy of 0.54(1) and local electron transport dominated by a tunneling process between defect levels and the Cd probes at lower temperatures