CMB Telescopes and Optical Systems

The cosmic microwave background radiation (CMB) is now firmly established as a fundamental and essential probe of the geometry, constituents, and birth of the Universe. The CMB is a potent observable because it can be measured with precision and accuracy. Just as importantly, theoretical models of the Universe can predict the characteristics of the CMB to high accuracy, and those predictions can be directly compared to observations. There are multiple aspects associated with making a precise measurement. In this review, we focus on optical components for the instrumentation used to measure the CMB polarization and temperature anisotropy. We begin with an overview of general considerations for CMB observations and discuss common concepts used in the community. We next consider a variety of alternatives available for a designer of a CMB telescope. Our discussion is guided by the ground and balloon-based instruments that have been implemented over the years. In the same vein, we compare the arc-minute resolution Atacama Cosmology Telescope (ACT) and the South Pole Telescope (SPT). CMB interferometers are presented briefly. We conclude with a comparison of the four CMB satellites, Relikt, COBE, WMAP, and Planck, to demonstrate a remarkable evolution in design, sensitivity, resolution, and complexity over the past thirty years.Comment: To appear in: Planets, Stars and Stellar Systems (PSSS), Volume 1: Telescopes and Instrumentatio

Management of intra-abdominal infections : recommendations by the WSES 2016 consensus conference

This paper reports on the consensus conference on the management of intra-abdominal infections (IAIs) which was held on July 23, 2016, in Dublin, Ireland, as a part of the annual World Society of Emergency Surgery (WSES) meeting. This document covers all aspects of the management of IAIs. The Grading of Recommendations Assessment, Development and Evaluation recommendation is used, and this document represents the executive summary of the consensus conference findings.Peer reviewe

Volunteer Engagement in Housing Co-Operatives – Civil Society “en miniature”

Housing co‐operatives host miniature versions of civil society. They vitalise a social system that is shaped by formal regulations, economic functions, and a population of private housing units. The study examines factors that influence a person’s willingness to volunteer in civic society using a multilevel analysis based on survey data from 32 co‐operatives and 1263 members. To do so, the social exchange theory is extended to include the member value approach, which connects social engagement with the fulfillment of a range of needs, thus going beyond a narrow economic cost benefit analysis. Study results show that volunteer engagement largely depends on the degree to which members can expect to experience their own achievement. This finding provides an explanation for significant differences in the engagement levels beyond factors that have already been determined (age, level of education). On an organizational level, the study reveals that the age of an organization influences volunteer engagement, but that the size and the degree of professionalization do not have an effect on it

Time Matters in Team Performance: Effects of Member Familiarity, Entrainment, and Task Discontinuity on Speed and Quality

We compared the speed and quality of performance for familiar, initially unfamiliar but continuing, and one-shot (single session) teams. We also proposed and observed entrainment effects for task time limits. Over the course of weekly sessions with changing tasks, continuing teams reached speed levels of the initially familiar teams, but the one-shot teams were consistently slower. Continuing teams also tended to have higher-quality output than the one-shot teams. There were no differences in how quickly each type of group entrained to time limits on the tasks. Entrainment was not robust to task discontinuity (Task A, then B). However, entrainment on repeated trials of a task persisted even when a different type of task “interrupted” those repeated trials (Task A, then B, then A again). Results compel a richer incorporation of time as a medium for complex task sequences, and time-based constructs as a feature of team membership in the study of group effectiveness

Acesso à assistência oncológica: mapeamento dos fluxos origem-destino das internações e dos atendimentos ambulatoriais. O caso do câncer de mama Access to cancer care: mapping hospital admissions and high-complexity outpatient care flows. The case of breast cancer

Este estudo analisa o fluxo de pacientes atendidas com câncer de mama, no Brasil, no âmbito do SUS, segundo o tipo de tratamento recebido. Foram identificadas redes de atenção oncológica com base nas informações do Sistema de Informações Hospitalares e do Sistema Informações Ambulatoriais de Alta Complexidade em Oncologia, relativas ao período 2005-2006, utilizando os programas TabWin e TerraView. O atendimento está amplamente distribuído pelo território nacional, com forte concentração nos maiores centros, e indícios de escassez de atendimento mesmo nas regiões onde a oferta de serviços é maior. Grande proporção das pacientes reside a mais de 150km do local de atendimento. A identificação das redes constitui ferramenta com aplicação importante no planejamento e na melhoria da distribuição dos serviços, considerando que o acesso geográfico é relevante para o desfecho do tratamento. A redução das taxas de morbidade e mortalidade depende da identificação precoce, pois, uma vez identificado o caso, o tratamento adequado e ágil concorre para reduzir os impactos da doença.<br>This study analyzes the flow of patients with breast cancer treated in Brazil's Unified National Health System (SUS) by type of treatment (surgery, radiotherapy, and chemotherapy). Hospital and outpatient services networks were identified based on data from the National Information System for Inpatient Care (SIH), and the National Information System for Outpatient Cancer Care, for 2005-2006, using TabWin and TerraView. Health services networks reach most of the country, and few municipalities are not connected to a network. However, treatment is highly concentrated in the largest cities, and even the latter show evidence of service shortages. Furthermore, a large proportion of patients live more than 150km from the respective service. Network identification is important for planning and improving services distribution, since geographic access is a relevant issue for treatment outcome. Reduction of morbidity and mortality requires early identification, and appropriate and prompt treatment can reduce the impacts of the disease