RESUMO
We present an atmospheric model tailored for the interactive visualization of planetary surfaces. As the exploration of the solar system is progressing with increasingly accurate missions and instruments, the faithful visualization of planetary environments is gaining increasing interest in space research, mission planning, and science communication and education. Atmospheric effects are crucial in data analysis and to provide contextual information for planetary data. Our model correctly accounts for the non-linear path of the light inside the atmosphere (in Earth's case), the light absorption effects by molecules and dust particles, such as the ozone layer and the Martian dust, and a wavelength-dependent phase function for Mie scattering. The mode focuses on interactivity, versatility, and customization, and a comprehensive set of interactive controls make it possible to adapt its appearance dynamically. We demonstrate our results using Earth and Mars as examples. However, it can be readily adapted for the exploration of other atmospheres found on, for example, of exoplanets. For Earth's atmosphere, we visually compare our results with pictures taken from the International Space Station and against the CIE clear sky model. The Martian atmosphere is reproduced based on available scientific data, feedback from domain experts, and is compared to images taken by the Curiosity rover. The work presented here has been implemented in the OpenSpace system, which enables interactive parameter setting and real-time feedback visualization targeting presentations in a wide range of environments, from immersive dome theaters to virtual reality headsets.
RESUMO
O WHO STEP Stroke foi desenvolvida para monitorar casos de doenças cerebrovasculares e possibilitar comparações de incidências. Objetivo: Descrever o perfil sociodemográfico e funcionalidade de pacientes acometidos por AVC admitidos no Hospital Regional de Coari durante um ano, e acompanha-los ao longo de um mês após admissão. Método: Estudo descritivo observacional, prospectivo e de seguimento dos casos entre outubro de 2010 e outubro de 2011. Utilizou-se a primeira etapa (Step 1) do WHO STEP Stroke para avaliar as hospitalizações por AVC em Coari-AM. Foram acompanhados 23 pacientes através de questionário padrão em até dois dias na internação, 10 e 28 dias após a internação. Resultados: A população estudada tinha média de idade de 72,8 (DP= 12,4) anos, em sua maioria homens (65,7%), pardos (65,2%) e hipertensos (95,7%), com incidência hospitalar de 30 casos em 100.000 habitantes e taxa de letalidade em 10 dias de 30,4% e 28 dias de 34,8%. O comprometimento neurológico na internação teve mediana de 28 (IIQ= 15-38) pontos, sendo 73,9% classificados como grave. Houve comprometimento funcional entre os sobreviventes. Conclusão: Estudo revelou uma predominância de homens, com idade elevada, pardos, sem estudo formal, baixa renda e com histórico de hipertensão arterial e diabetes, como perfil de internação hospitalar por doenças cerebrovasculares no município. A incidência de casos hospitalares de AVC foi em 30 (por 100.000) em Coari-AM, com graves comprometimentos neurológicos na admissão, e altas taxas de letalidade e prejuízo funcional após 28 dias do evento, quando comparadas a outras localidades no Brasil e no mundo
The WHO STEP Stroke is a tool developed to monitor cases of cerebrovascular and allow comparison of its incidence throughout the world. Objective: To describe the sociodemographic profile and functionality of stroke inpatients admitted in Coari´s Regional Hospital and followed up one month after admittance. Method: This is a prospective, descriptive observational and follow-up study of cases between October 2010 and October 2011. In this study, we used the first step (Step 1) of the WHO STEP Stroke to assess stroke hospitalization in Coari-AM Twenty-three patients were monitored with a standard questionnaire up to two days after hospitalization, 10 days, and 28 after hospitalization. Results: The studied population had average age of 72.8 (SD= 12.4) years, mostly men (65.7%), brown (65.2%), and hypertensive (95.7%), with a hospital incidence of 30 cases for 100.000 people, and mortality in 10 days of 30.4% and 28 days of 34.8%. The neurological impairment at hospitalization had a median of 28 (IIQ= 15-38) points, with 73.9% classified as severe. There was an impairment in functionality among the survivors. Conclusion: This study showed the profile of hospital admittance for cerebrovascular disease in this city to be mainly composed by older men, brown, with no formal study, low income, and history of systemic arterial hypertension and diabetes. The hospital incidence for stroke was 30 (per 100.000) in Coari-AM, with severe neurological impairment at admission, with high mortality rates, and functional deficits 28 days after the event when compared to other regions in Brazil and in the world
RESUMO
Human knowledge about the cosmos is rapidly increasing as instruments and simulations are generating new data supporting the formation of theory and understanding of the vastness and complexity of the universe. OpenSpace is a software system that takes on the mission of providing an integrated view of all these sources of data and supports interactive exploration of the known universe from the millimeter scale showing instruments on spacecrafts to billions of light years when visualizing the early universe. The ambition is to support research in astronomy and space exploration, science communication at museums and in planetariums as well as bringing exploratory astrographics to the class room. There is a multitude of challenges that need to be met in reaching this goal such as the data variety, multiple spatio-temporal scales, collaboration capabilities, etc. Furthermore, the system has to be flexible and modular to enable rapid prototyping and inclusion of new research results or space mission data and thereby shorten the time from discovery to dissemination. To support the different use cases the system has to be hardware agnostic and support a range of platforms and interaction paradigms. In this paper we describe how OpenSpace meets these challenges in an open source effort that is paving the path for the next generation of interactive astrographics.
