522 research outputs found

    A note on Influence diagnostics in nonlinear mixed-effects elliptical models

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    This paper provides general matrix formulas for computing the score function, the (expected and observed) Fisher information and the Δ\Delta matrices (required for the assessment of local influence) for a quite general model which includes the one proposed by Russo et al. (2009). Additionally, we also present an expression for the generalized leverage. The matrix formulation has a considerable advantage, since although the complexity of the postulated model, all general formulas are compact, clear and have nice forms.Comment: Paper submitted for possible publication, 6 page

    Condomínios horizontais em Brasília : elementos e composições

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    O artigo traz uma reflexão acerca da proliferação de áreas residenciais denominadas condomínios horizontais, que configuram importante questão no debate público relacionado ao recente processo de expansão urbana no Distrito Federal. A partir de pesquisa inicial realizada com moradores de condomínios de diferentes faixas de renda, desenvolve-se uma análise que parte do pressuposto de que tais formas sociais apresentam elementos que se combinam em composições singulares, não redutíveis a modelos fixos, porém comparáveis entre si e com outros processos de ocupação territorial urbanizadora. Entre os elementos apresentados, encontram-se processos de consolidação e regularização fundiária, bem como o medo e os significados da categoria “cidade” em Brasília. ______________________________________________________________________________ ABSTRACTThe article reflects upon the spread of residential areas such as horizontal condominiums, which stand as an important issue in the public debate related to the recent process of urban growth in the Federal District. Drawing from initial research with condominium residents pertaining to different income segments, the analysis is based on the premisse that such social forms present elements which combine in unique assemblages which cannot be reduced to static models but are comparable with one another and with other processes of urbanizing territorial occupation. Among the elements presented are processes of consolidation and land tenure regularization, as well as fear and the different meaning of the category “cidade” in Brasília

    Retirement is associated with a decrease in dietary quality.

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    Retirement has been associated with changes in dietary intake. We evaluated dietary intake and compliance to dietary guidelines after retirement in a population-based survey. Data from a prospective study conducted in Lausanne, Switzerland. Dietary intake was assessed using a validated food frequency questionnaire in 2009-2012 (first survey) and 2014-2017 (second survey). Total energy intake (TEI), macro and micronutrients, foods, dietary scores and compliance to dietary guidelines were assessed. Three approaches were used comparing changes in dietary intake: 1) before and after retiring (paired analysis); 2) in participants who retired with gender- and age-matched participants who did not retire (two-group comparison), and 3) in participants who retired, who did not retire or who were retired at both surveys (analysis of variance). Using the first approach, newly retired participants (n = 215) increased their intake of total (median and [interquartile range]: 15.2 [13.7-17.5] vs. 14.9 [13.3-17.1] % of TEI) and animal (11.1 [9.1-13.0] vs. 10.0 [8.5-12.6] %TEI) protein; total (35.8 [32.1-40.7] vs. 34.6 [30.0-39.1] %TEI), saturated and monounsaturated fat; alcohol; cholesterol; vitamin D and fish, and decreased their intake of vegetable protein; total carbohydrates and monosaccharides, and of the Mediterranean diet score. Those findings were confirmed for total and saturated fat, alcohol, total carbohydrates and monosaccharides; vitamin D and fish intake, and of the Mediterranean diet score in the other two approaches. Retirement was associated with an unhealthier dietary intake
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