Universidade de Pernambuco

About: Universidade de Pernambuco is a education organization based out in Recife, Brazil. It is known for research contribution in the topics: Population & Medicine. The organization has 6147 authors who have published 6948 publications receiving 73648 citations.

Comparison of motor competence levels on two assessments across childhood.

Abstract: This study compared performances and motor delay classifications for the Test of Gross Motor Development-2nd edition (TGMD-2) and the Korperkoordinationstest Fur Kinder (KTK) in a sample of 424 healthy children (47% girls) between 5 and 10 years of age. Low-to-moderate correlations (r range = 0.34–0.52) were found between assessments across age. In general, both boys and girls demonstrated higher raw scores across age groups. However, percentile scores indicated younger children outperformed older children, denoting a normative percentile-based decrease in motor competence (MC) in the older age groups. In total, the TGMD-2 and KTK classified 39.4% and 18.4% children, respectively, as demonstrating very low MC (percentile ≤5). In conclusion, the TGMD-2 classified significantly more children with motor delays than the KTK and the differences between children’s motor skill classification levels by these assessments became greater as the age groups increased. Therefore, the TGMD-2 may demonstrate more...

Climate changes in mangrove forests and salt marshes

Abstract: Esta e uma sintese enquadrada na Rede de Monitoramento de Habitats Bentonicos Costeiros (ReBentos, GT4: Manguezais e Marismas), embasada em literatura cientifica que examina interacoes entre clima e biodiversidade, assim como fatores antropicos, incluindo aqueles responsaveis pela diminuicao da resiliencia sistemica. O objetivo deste trabalho e determinar as dificuldades quanto a deteccao de sinais precoces e alertas de mudancas climaticas com dados de monitoramento. No presente trabalho, tambem foram exploradas formas de contornar os diversos obstaculos identificados. A exposicao e a sensitividade de especies de mangue e de marisma, bem como dos ecossistemas dos quais fazem parte, os tornam extremamente vulneraveis e potenciais indicadores ambientais de mudancas de nivel do mar e outras respostas as variacoes do clima. Entretanto, a interpretacao de mudancas em manguezais e marismas e em seus atributos sistemicos deve ser meticulosa, considerando assinatura energetica, regime de disturbios e pressoes ambientais em cada local de estudo. Os potenciais de adaptacao e de sobrevivencia, em resposta a tais mudancas, dependem da fisiologia de cada especie e dos processos contextuais onde reside a resiliencia e a capacidade de persistir (em niveis local, de paisagem e regionais). A zona costeira deve ser alvo de medidas antecipatorias para reducao de riscos por quaisquer impactos, uma vez que nela ha intensa convergencia de processos sociais e ecologicos. Os ecossistemas dessa zona devem ser integrados em estrategias de adaptacao. O manejo costeiro deve ser embasado em mitigacao pro-ativa e colaborativa de longo-termo, sempre com base em estudos ecossistemicos e em programas de monitoramento que possam 1) prover sistema de alerta precoce; 2) preencher lacunas entre correlacoes simplistas que proveem inferencias fracas, e abordagens baseadas em processos que levem a atribuicoes mais confiaveis e a melhores niveis de antecipacao.

Tooth Loss in Aggressive Periodontitis A Systematic Review

Abstract: Aggressive periodontitis (AgP) is thought to have a faster rate of progression than chronic periodontitis (CP). However, there is a lack of studies systematically investigating disease progression and tooth loss in AgP. A systematic search of the literature was conducted by two independent reviewers for longitudinal studies including patients with AgP (previously known as 'periodontosis', 'juvenile' or 'early-onset' periodontitis) indicating measures of disease progression. Ovid MEDLINE(®) and Embase databases were searched for at least 5-year longitudinal human studies in AgP patients. In total, 16 studies were included in the review, from an initial search of 1,601 titles. Heterogeneity was detected for disease definition and clinical data reporting; hence meta-analysis was feasible only for the objective measure 'tooth loss'. The average tooth loss for all AgP cases was 0.09 (95% C.I. = 0.06-0.16) per patient-year. The corresponding values by diagnosis were 0.05, 0.14, and 0.12 tooth loss per patient-year, respectively, for LAgP, GAgP, and un-specified AgP. For studies reporting tooth loss during the 'observational period' (excluding extractions at initial therapy), the average tooth loss for AgP was 0.09 per patient-year. High heterogeneity was detected for these analyses. In conclusion, most studies report good long-term stability of treated AgP cases.

Availability study on cloud computing environments: Live migration as a rejuvenation mechanism

Abstract: With the increasing adoption of cloud computing environments, studies about high availability in those systems became more and more significant. Software rejuvenation is an important mechanism to improve system availability. This paper presents a comprehensive availability model to evaluate the utilization of the live migration mechanism to enable VMM rejuvenation with minimum service interruption. Live migrations are performed observing a time-based trigger. We evaluate five different scenarios, with distinct time intervals for triggering the rejuvenation. The results show that the live migration can significantly reduce the system downtime.