What does reflection from cloud sides tell us about vertical distribution of cloud droplet sizes? A. Marshak, J. V. Martins, V. Zubko, and Y. J. Kaufman NASA – Goddard Space Flight Center, Climate and Radiation Branch, Greenbelt, MD, USA Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD, USA Nortel Government Solutions, Inc., Lanham, MD, USA Recei...

NASA is developing the knowledge required to accurately predict and to efficiently manage radiation risk in space. The strategy employed has three research components: (1) ground-based simulation of space radiation components to develop a science-based understanding of radiation risk; (2) space-based measurements of the radiation environment on planetary surfaces and interplanetary space, as we...

SUPPORTING RESEARCH: NASA'S SCIENCE MISSION DIRECTORATE (SMD). NASA transformed its organization in the summer of 2004, uniting the former Earth and Space Science Enterprises. The Science Mission Directorate will carry out the scientific exploration of the Earth, Moon, Mars and beyond; chart the best route of discovery; and reap the benefits of Earth and space exploration for society. A combine...

Virtual reality (VR) can potentially enhance various design and construction assessment intensive tasks, such as review. However, it may lead to cognitive overload, adversely affecting the participants’ performance. It is critical understand effects of VR behavior for implementing technology in industry. The principal objective this study was investigate load (CL), task performance (TP), situat...

RESUMO Objetivos: adaptar, validar o conteúdo e avaliar a confiabilidade do instrumento National Aeronautics and Space Administration – Task Load Index , traduzido para português brasileiro. Métodos: estudo metodológico, dividido em cinco etapas: tradução; síntese; retrotradução; avaliação da versão por comitê de especialistas; pré-teste validação final profissionais saúde atuantes unidades int...

We refute Elaine Scarry’s contentions, published in the New York Review of Books in September and October 2000, that external electromagnetic fields can have been major contributors to the accidents to TWA Flight 800 and Swissair Flight 111. The refutation for TWA 800 cites NASA research done in support of the investigation. The refutation for Swissair 111 is new here.