Validade interna, dimensionalidade e desempenho da escala Body Shape Questionnaire em uma população de estudantes universitários brasileiros

OBJECTIVE: To adapt the Body Shape Questionnaire for use in the Brazilian population; to study the internal validity and the dimensionality of the scale when used in a non- clinical Brazilian population. METHOD: A cross- sectional study was accomplished comprising 164 students in the first 3 years of the School of Medicine conveniently selected at the Universidade Federal de São Paulo (UNIFESP). The 34- item Body Shape Questionnaire version and a questionnaire to assess demographic and anthropometric information were used. RESULTS: The internal consistency of the Body Shape Questionnaire measured by Cronbach's alpha was 0.97, indicating that the questions of the scale converge to the same construct. The factor analysis of the scale resulted in a four- dimension solution accounting for 66.4% of the total data variability. Regarding the final score of Body Shape Questionnaire, the mean score was 58.7 ± 25.1 for men and 89.7 ± 31.3 for women. DISCUSSION: We found statistically significant gender differences in the means of the Body Shape Questionnaire scores. Women showed higher dissatisfaction than did men as to their appearance as measured by the Body Shape Questionnaire. The adapted version of the scale seems to maintain the characteristics of the original scale.OBJETIVO: Adaptar a escala Body Shape Questionnaire para uso no Brasil; estudar a validade interna e a dimensionalidade da escala quando usada em uma população não clínica brasileira. MÉTODO: Um estudo de corte transversal foi realizado envolvendo uma população selecionada por conveniência de 164 estudantes dos três primeiros anos do curso de Medicina da Universidade Federal de São Paulo (UNIFESP). Foram usados a versão de 34 itens do Body Shape Questionnaire e um questionário adicional para informação demográfica e antropométrica. RESULTADOS: A consistência interna do Body Shape Questionnaire, medida através do alfa de Cronbach, foi de 0,97, o que indica que as questões da escala convergem para um mesmo construto. A análise fatorial da escala resultou em uma solução de quatro dimensões que responde por 66,4% da variabilidade total dos dados. Em relação aos escores Body Shape Questionnaire, sua média foi de 58,7 ± 25,1 para os homens e 89,7 ± 31,3 para as mulheres. DISCUSSÃO: Encontramos uma diferença estatisticamente significante entre os gêneros na média dos escores do Body Shape Questionnaire. As alterações de imagem corporal, medidas pelo Body Shape Questionnaire, mostram uma grande insatisfação com a aparência em mulheres quando comparadas aos homens. A versão adaptada da escala parece manter as características da escala original.Universidade Federal de São Paulo (UNIFESP) Department of PsychiatryUNIFESP, Department of PsychiatrySciEL

A P\'eclet-robust discontinuous Galerkin method for nonlinear diffusion with advection

We analyze a Discontinuous Galerkin method for a problem with linear advection-reaction and $p$-type diffusion, with Sobolev indices $p\in (1, \infty)$. The discretization of the diffusion term is based on the full gradient including jump liftings and interior-penalty stabilization while, for the advective contribution, we consider a strengthened version of the classical upwind scheme. The developed error estimates track the dependence of the local contributions to the error on local P\'eclet numbers. A set of numerical tests supports the theoretical derivations

A posteriori error estimates for the virtual element method

An a posteriori error analysis for the virtual element method (VEM) applied to general elliptic problems is presented. The resulting error estimator is of residual-type and applies on very general polygonal/polyhedral meshes. The estimator is fully computable as it relies only on quantities available from the VEM solution, namely its degrees of freedom and element-wise polynomial projection. Upper and lower bounds of the error estimator with respect to the VEM approximation error are proven. The error estimator is used to drive adaptive mesh refinement in a number of test problems. Mesh adaptation is particularly simple to implement since elements with consecutive co-planar edges/faces are allowed and, therefore, locally adapted meshes do not require any local mesh post-processing

A Survey on Computational Propaganda Detection

Propaganda campaigns aim at influencing people's mindset with the purpose of advancing a specific agenda. They exploit the anonymity of the Internet, the micro-profiling ability of social networks, and the ease of automatically creating and managing coordinated networks of accounts, to reach millions of social network users with persuasive messages, specifically targeted to topics each individual user is sensitive to, and ultimately influencing the outcome on a targeted issue. In this survey, we review the state of the art on computational propaganda detection from the perspective of Natural Language Processing and Network Analysis, arguing about the need for combined efforts between these communities. We further discuss current challenges and future research directions.Comment: propaganda detection, disinformation, misinformation, fake news, media bia

QCD ghost f(T)-gravity model

Within the framework of modified teleparallel gravity, we reconstruct a f(T) model corresponding to the QCD ghost dark energy scenario. For a spatially flat FRW universe containing only the pressureless matter, we obtain the time evolution of the torsion scalar T (or the Hubble parameter). Then, we calculate the effective torsion equation of state parameter of the QCD ghost f(T)-gravity model as well as the deceleration parameter of the universe. Furthermore, we fit the model parameters by using the latest observational data including SNeIa, CMB and BAO data. We also check the viability of our model using a cosmographic analysis approach. Moreover, we investigate the validity of the generalized second law (GSL) of gravitational thermodynamics for our model. Finally, we point out the growth rate of matter density perturbation. We conclude that in QCD ghost f(T)-gravity model, the universe begins a matter dominated phase and approaches a de Sitter regime at late times, as expected. Also this model is consistent with current data, passes the cosmographic test, satisfies the GSL and fits the data of the growth factor well as the LCDM model.Comment: 19 pages, 9 figures, 2 tables. arXiv admin note: substantial text overlap with arXiv:1111.726

A note on comonotonicity and positivity of the control components of decoupled quadratic FBSDE

In this small note we are concerned with the solution of Forward-Backward Stochastic Differential Equations (FBSDE) with drivers that grow quadratically in the control component (quadratic growth FBSDE or qgFBSDE). The main theorem is a comparison result that allows comparing componentwise the signs of the control processes of two different qgFBSDE. As a byproduct one obtains conditions that allow establishing the positivity of the control process.Comment: accepted for publicatio

The likely impact of COVID-19 on education: Reflections based on the existing literature and recent international datasets

In order to reduce the spread of COVID-19, most countries around the world have decided to temporarily close educational institutions. However, learning has not stopped but is now fully taking place online as schools and universities provide remote schooling. Using existing literature and evidence from recent international data (Eurostat, PISA, ICILS, PIRLS, TALIS), this report attempts to gain a better understanding of how the COVID-19 crisis may affect students’ learning. It looks at the different direct and indirect ways through which the virus and the measures adopted to contain it may impact children’s achievement. ‘Conservative’ estimates for a few selected EU countries consistently indicate that, on average, students will suffer a learning loss. It is also suggested that COVID-19 will not affect students equally, will influence negatively both cognitive and non-cognitive skills acquisition, and may have important long-term consequences in addition to the short-term ones.JRC.B.4-Human Capital and Employmen

A EDUCAÇÃO AMBIENTAL NO MUSEU FLORESTAL OCTÁVIO VECCHI, SÃO PAULO, SP

Considerando o potencial dos museus em geral e, em especial, dos museus de ciência, como espaços de educação ambiental, é importante discutir se as finalidades institucionais e as práticas educativas realizadas nesses espaços contemplam a dimensão da educação ambiental. Nesse sentido, o presente artigo tem o objetivo de caracterizar e analisar as finalidades institucionais e as práticas do Museu Florestal Octávio Vecchi e, a partir dessas análises, elaborar uma proposta de aspectos teóricos e práticos a serem considerados no desenvolvimento da educação ambiental no referido museu, localizado no Parque Estadual Alberto Löfgren, em São Paulo – SP. Foi realizada a análise documental das fontes primárias do acervo da Biblioteca do antigo Instituto Florestal e do acervo Museu Florestal Octávio Vecchi e realizada a observação de práticas educativas desenvolvidas no museu. Constatou-se que sempre houve uma preocupação com o patrimônio natural, em atividades com a comunidade local, no reforço na identidade local e como instituição. Nas visitas observadas foram identificadas práticas de educação ambiental nas suas macrotendências pragmática e conservacionista, enfatizando a preservação das florestas e a reciclagem. Destacou-se, pois, a importância de uma equipe fixa no serviço educativo, de maior integração entre as equipes de mediação do Museu Florestal e do parque no qual está inserido e de ampliação das parcerias para um trabalho de educação ambiental em uma perspectiva crítica

Effects of remote monitoring on clinical outcomes and use of healthcare resources in heart failure patients with biventricular defibrillators: results of the MORE-CARE multicentre randomized controlled trial

Aims: The aim of this study was to evaluate the clinical efficacy and safety of remote monitoring in patients with heart failure implanted with a biventricular defibrillator (CRT-D) with advanced diagnostics. Methods and results: The MORE-CARE trial is an international, prospective, multicentre, randomized controlled trial. Within 8 weeks of de novo implant of a CRT-D, patients were randomized to undergo remote checks alternating with in-office follow-ups (Remote arm) or in-office follow-ups alone (Standard arm). The primary endpoint was a composite of death and cardiovascular (CV) and device-related hospitalization. Use of healthcare resources was also evaluated. A total of 865 eligible patients (mean age 66 \ub1 10 years) were included in the final analysis (437 in the Remote arm and 428 in the Standard arm) and followed for a median of 24 (interquartile range = 15\u201326) months. No significant difference was found in the primary endpoint between the Remote and Standard arms [hazard ratio 1.02, 95% confidence interval (CI) 0.80\u20131.30, P = 0.89] or in the individual components of the primary endpoint (P > 0.05). For the composite endpoint of healthcare resource utilization (i.e. 2-year rates of CV hospitalizations, CV emergency department admissions, and CV in-office follow-ups), a significant 38% reduction was found in the Remote vs. Standard arm (incidence rate ratio 0.62, 95% CI 0.58\u20130.66, P < 0.001) mainly driven by a reduction of in-office visits. Conclusions: In heart failure patients implanted with a CRT-D, remote monitoring did not reduce mortality or risk of CV or device-related hospitalization. Use of healthcare resources was significantly reduced as a result of a marked reduction of in-office visits without compromising patient safety. Trial registration: NCT00885677