Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in astrophysics, particle physics and cosmology. CTA is an international initiative to build the next generation instrument, with a factor of 5-10 improvement in sensitivity in the 100 GeV-10 TeV range and the extension to energies well below 100 GeV and above 100 TeV. CTA will consist of two arrays (one in the north, one in the south) for full sky coverage and will be operated as open observatory. The design of CTA is based on currently available technology. This document reports on the status and presents the major design concepts of CTA

Hospitalização e fatores associados entre residentes de instituições de longa permanência para idosos Hospitalization and risk factors among elderly individuals living in nursing homes

O estudo avaliou a prevalência de internação hospitalar no período de um ano e os fatores associados com base em um censo entre residentes de instituições de longa permanência para idosos em Pelotas, Rio Grande do Sul, Brasil. A internação hospitalar foi avaliada com a pergunta: "Desde <mês> do ano passado, o(a) Sr.(a) baixou em algum hospital?". Dos 521 indivíduos elegíveis, coletou-se informação de 466 (89,4%). A prevalência de hospitalização no último ano foi de 23,9% (IC95%: 19,9-27,8) e associou-se com: incapacidade para atividades básicas vida diária, ocorrência de queda no último ano e o fato de ser ex-fumante. Indivíduos solteiros e separados tiveram proteção para internação hospitalar. Houve também associação inversa do desfecho com autopercepção de saúde. A alta prevalência de internação hospitalar encontrada em indivíduos residentes em instituições de longa permanência para idosos é um importante indicador para o planejamento dos serviços de saúde, de forma a bem atender as demandas de uma população em transição demográfica e epidemiológica.<br>The aim of the present study was to evaluate the prevalence of hospital admissions over a one-year period and associated factors through a survey of elderly subjects living in nursing homes in Pelotas, Rio Grande do Sul State, Brazil. Hospital admissions were assessed using the question: "From <month> last year to today, were you admitted to a hospital?" Out of 521 eligible individuals, information was collected for 466 (89.4%). Prevalence of hospital admissions in the previous 12 months was 23.9% (95%CI: 19.9-27.8). Admissions were directly associated with: inability to perform basic activities of daily living, falls, and history of smoking. Single and divorced individuals were less likely to be hospitalized. There was an inverse association between hospitalization and self-rated health. The high prevalence of hospitalization among elderly subjects living in nursing homes is an important indicator for the organization of health services, in order to ensure high-quality services for a population group experiencing a demographic and epidemiological transition