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[en] For the twenty-fifth consecutive year, a NASA/ASEE Summer Faculty Fellowship Program was conducted at the Marshall Space Flight Center (MSFC). The basic objectives of the programs are: (1) to further the professional knowledge of qualified engineering and science faculty members; (2) to stimulate an exchange of ideas between participants and NASA; (3) to enrich and refresh the research and teaching activities of the participants' institutions; and (4) to contribute to the research objectives of the NASA Centers. The Faculty Fellows spent ten weeks at MSFC engaged in a research project compatible with their interests and background and worked in collaboration with a NASA/MSFC colleague
[en] This report includes an overview of some ways to go wrong in making decisions – Common deficiencies in reasoning and in modeling, thinking clearly about uncertainty, Case Studies: 1: NASA Challenger 2: Davis-Besse vessel-head event, Interlude: Critical Thinking 3: NASA Columbia 4: Fukushima and concluding thoughts.
[en] The US cosmic-ray research program has four facets. Theese are: the in-situ deep-space measurements, the solar and galactic measurements conducted from Earth-orbiting spacecraft, the heavy-nuclei and high-energy measurements from balloons, and the greater than 1016 eV air-shower measurements
[en] The author describes work involving NASA's Gamma Ray Observatory (GRO). GRO exemplifies the near zero principle because it investigates new gamma ray phenomena by relying on the space program to take us into the region of zero interference above the earth's atmosphere. In its present form GRO has four experiments
[en] This paper describes a probabilistic method which extends classical PRA to include some characteristics of the organization that processes or manages an engineering system. Ataxonomy of errors is presented and their organizational roots are examined. An assembly model is proposed for the analysis of the resulting spectrum of capacities of the system. The management of the Thermal Protection system of the Space Shuttle is used as an illustration. The model allows assessment of the benefits of organizational improvements of the orbiter's processing
[en] We present an analysis of the recently discovered blue L dwarf SDSS J141624.08+134826.7. We extend the spectral coverage of its published spectrum to ∼4 μm by obtaining a low-resolution L-band spectrum with SpeX on the NASA IRTF. The spectrum exhibits a tentative weak CH4 absorption feature at 3.3 μm but is otherwise featureless. We derive the atmospheric parameters of SDSS J141624.08+134826.7 by comparing its 0.7-4.0 μm spectrum to the atmospheric models of Marley and Saumon which include the effects of both condensate cloud formation and non-equilibrium chemistry due to vertical mixing and find the best-fitting model has Teff = 1700 K, log g = 5.5 (cm s-2), fsed = 4, and Kzz = 104 cm2 s-1. The derived effective temperature is significantly cooler than previously estimated but we confirm the suggestion by Bowler et al. that the peculiar spectrum of SDSS J141624.08+134826.7 is primarily a result of thin condensate clouds. In addition, we find strong evidence of vertical mixing in the atmosphere of SDSS J141624.08+134826.7 based on the absence of the deep 3.3 μm CH4 absorption band predicted by models computed in chemical equilibrium. Finally, this result suggests that observations of blue L dwarfs are an appealing way to quantitatively estimate the vigor of mixing in the atmospheres of L dwarfs because of the dramatic impact such mixing has on the strength of the 3.3 μm CH4 band in the emergent spectra of L dwarfs with thin condensate clouds.
[en] A set of peculiarities of the 24-th solar activity cycle is considered on the base of the data of Kislovodsk Mountain Astronomical Station (www.solarstation.ru) as well as NASA/Marshall data. The peculiarities of the 24-th cycle are: the asymmetry between sunspot areas of northern and southern solar hemispheres; the difference between sunspot latitudes in northern and southern solar hemispheres; low activity of the first years of the cycle; large relative amount of single sunspots