نتایج جستجو برای: gould integral
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The academic bottleneck. Academia is highly competitive with universitiesproducing a huge number of PhD graduates relative to the available ofacademic positions worldwide (Gould, 2015). For example, only 12.8%of PhDgraduates can attain in USA (Larson et al. 2014). Thisbottleneck also narrowing due economic cuts universities and researchinstitutions (OECD, 2016).
I discuss young close-by compact objects, recent supernovae in the solar neighbourhood, and point to their connection with cosmic ray studies. Especially the role of the Gould Belt is underlined.
A ‘‘rotating wall’’ perturbation technique enables confinement of up to 3310 electrons or 10 ions in Penning–Malmberg traps for periods of weeks. These rotating wall electric fields transfer torque to the particles by exciting Trivelpiece–Gould plasma modes with kzÞ0 and mu51 or 2. Modes that rotate faster than the plasma column provide a positive torque that counteracts the background drags, r...
Two new species of Brueelia are described and illustrated. These new species and their type hosts are: Brueelia sueta ex Pharomachrus pavoninus (Spix, 1824), the Pavonine Quetzal and Brueelia cicchinoi ex Trogon viridis Linnaeus, the White-tailed Trogon. Both new species differ from the only Brueelia described on Trogon mexicanus by many morphological features, including those present in the ma...
In this paper, we investigate sufficient conditions on the neighborhood of independent vertices which imply that a graph contains k independent cycles or chorded cycles. This is related to several results of Corrádi and Hajnal, Justesen, Wang, and Faudree and Gould on graphs containing k independent cycles, and Finkel on graphs containing k chorded cycles. In particular, we establish that if in...
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