Predicting social distancing and compulsive buying behaviours in response to COVID-19 in a United Kingdom sample

This study examines differences between key socio-demographic groups and the impact of strength of social network, political trust, and fear of COVID-19 on working from home (a key social distancing behaviour) and compulsive buying (a maladaptive behaviour) in response to COVID-19. This study used a correlational cross-sectional survey design. A sample of 411 participants in the United Kingdom (UK) completed measures of strength of social network, political trust, fear of COVID-19, length of self-isolation and compulsive buying. Results showed that older people and lower income groups are less likely to work from home in response to COVID-19; that people with a diagnosed mental health disorder exhibited less political trust, more fear of COVID-19, and more compulsive buying; and that people reporting COVID-19 symptomatology had been in self-isolation for longer and exhibited more compulsive buying than those with no COVID-19 symptomatology. The structural equation model showed that age, having a diagnosed mental health disorder, having COVID-19 symptomatology and strength of social network impacted on working from home and compulsive buying, through the mediators of political trust, fear of COVID-19 and length of self-isolation. The results demonstrate that some groups in the UK population may be vulnerable to maladaptive behaviours and poor social, psychological, and physical health outcomes as a result of the COVID-19 pandemic. These groups may require special support to cope effectively with the effects of COVID-19

Seleção de clones promissores de cupuaçuzeiros para a implantação de pomares comerciais no Estado do Amapá.

bitstream/item/145486/1/CPAF-AP-2015-BPD-91-Cupuacu-v3-1.pd

Cultivos sucessivos de milho em várzea.

Visando obter informações sobre formas de cultivares de milho em várzeas, capazes de manter em uma mesma área elevadas produtividades por um período maior que o verificado atualmente, estao sendo avaliados cultivos sucessivos dessa espécie, através de ações de pesquisa executadas em várzea úmida as margens do rio Mazagão, município de Mazagão, AP.bitstream/item/65117/1/AP-1997-cultivos-sucessivos-milho.pd

Effective transport barriers in nontwist systems

In fluids and plasmas with zonal flow reversed shear, a peculiar kind of transport barrier appears in the shearless region, one that is associated with a proper route of transition to chaos. These barriers have been identified in symplectic nontwist maps that model such zonal flows. We use the so-called standard nontwist map, a paradigmatic example of nontwist systems, to analyze the parameter dependence of the transport through a broken shearless barrier. On varying a proper control parameter, we identify the onset of structures with high stickiness that give rise to an effective barrier near the broken shearless curve. Moreover, we show how these stickiness structures, and the concomitant transport reduction in the shearless region, are determined by a homoclinic tangle of the remaining dominant twin island chains. We use the finite-time rotation number, a recently proposed diagnostic, to identify transport barriers that separate different regions of stickiness. The identified barriers are comparable to those obtained by using finite-time Lyapunov exponents.FAPESPCNPqCAPESMCT/CNEN (Rede Nacional de Fusao)Fundacao AraucariaUS Department of Energy DE-FG05-80ET-53088Physic