Results 11 to 20 of about 4,435 (243)
Second-generation Fragments of a Comet Split in the Making: The Liller Family Comets
Research Notes of the AAS, 2023 Abstract Kreutz sungrazers and Kracht, Marsden, and Meyer sunskirters are regarded as second- or third-generation fragments of split comets. First-generation fragments have been observed to form, for example, in the cases of comets 73P/Schwassmann–Wachmann 3, D/1993 F2 (Shoemaker–Levy 9), and 332P/Ikeya–Murakami.
Carlos de la Fuente Marcos +1 more
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A Bayesian, Generalized Frailty Model for Comet Assays [PDF]
Journal of Biopharmaceutical Statistics, 2013 This paper proposes a flexible modeling approach for so-called comet assay data regularly encountered in preclinical research. While such data consist of non-Gaussian outcomes in a multilevel hierarchical structure, traditional analyses typically completely or partly ignore this hierarchical nature by summarizing measurements within a cluster.
Ghebretinsae, Aklilu Habteab +4 more
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Solar plasma generated by sungrazing comets [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractIt is analytically shown that passages of comets near the Sun's surface with velocities more than 600 km/s is accompanied by aerodynamic crushing of their nuclei within the solar chromosphere and transversal expansion of the crushed matter. The deceleration of the flattened hypervelocity body within the solar photosphere has sharply impulsive ...
F. S. Ibodov, S. Ibadov
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Will comet 209P/LINEAR generate the next meteor storm? [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 Previous studies have suggested that Comet 209P/LINEAR may produce strong me- teor activity on Earth on 2014 May 24; however, exact timing and activity level is difficult to estimate due to the limited physical observations of the comet. Here we reanalyze the optical observations of 209P/LINEAR obtained during its 2009 appari- tion.
Ye, Quanzhi, Wiegert, Paul A.
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Compression forces generated by actin comet tails on lipid vesicles [PDF]
Proceedings of the National Academy of Sciences, 2003 Polymerizing networks of actin filaments generate force for a variety of movements in living cells, including protrusion of filopodia and lamellipodia, intra- and intercellular motility of certain bacterial and viral pathogens, and motility of endocytic vesicles and other membrane-bound organelles.
Paula A, Giardini +2 more
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On Two Mechanism OP X-Ray Generation in Comets [PDF]
International Astronomical Union Colloquium, 1985 AbstractThe intensity of solar X-radiation scattered by a comet is calculated and compared to the proper X-radiation of the comet due to impacts of cometary and interplanetary dust particles. Detection of X-radiation of dusty comets at small heliocentric distances (R ≤ 1 a.u.) is found to be an indicator of high-temperature plasma generation as result ...
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COMET Flows: Towards Generative Modeling of Multivariate Extremes and Tail Dependence
Proceedings of the Thirty-First International Joint Conference on Artificial Intelligence, 2022 Normalizing flows—a popular class of deep generative models—often fail to represent extreme phenomena observed in real-world processes. In particular, existing normalizing flow architectures struggle to model multivariate extremes, characterized by heavy-tailed marginal distributions and asymmetric tail dependence among variables.
Andrew McDonald 0003 +2 more
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Shigella flexneriutilize the spectrin cytoskeleton during invasion and comet tail generation [PDF]
BMC Microbiology, 2012 Abstract Background The spectrin cytoskeleton is emerging as an important host cell target of enteric bacterial pathogens. Recent studies have identified a crucial role for spectrin and its associated proteins during key pathogenic processes of Listeria monocytogenes and Salmonella Typhimurium infections.
Ruetz, Tyson, Lin, Ann, Guttman, Julian
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Green electricity generation assessment using the CODAS-COMET method
Ecological Indicators, 2022 The purpose of this paper is to present the new hybrid multi-criteria decision analysis (MCDA) method CODAS-COMET for evaluating sustainable electricity generation considering renewable energy sources (RES). The introduced approach combines the advantages of two known MCDA methods: Characteristic Object METhod (COMET) and COmbinative Distance-based ...
Jarosław Wątróbski +3 more
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Unbiased orbit determination for the next generation asteroid/comet surveys [PDF]
Proceedings of the International Astronomical Union, 2005 In the next generation surveys, the discovery of moving objects can be successful only if an observation strategy and the identication/orbit determination procedure are appropriate for the diverse apparent motions of the target sub-populations. The observations must accurately measure the displacement over a short interval of time; observations ...
MILANI COMPARETTI, ANDREA +8 more
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