Browsing Articles by Title

Now showing items 468-487 of 761

On the Cartesian product of non well-covered graphs

Hartnell, Bert L.; Rall, Douglas F. (Electronic Journal of Combinatorics, 2013-04-30)

A graph is well-covered if every maximal independent set has the same cardinality, namely the vertex independence number. We answer a question of Topp and Volkmann (1992) and prove that if the Cartesian product of two ...
On the crucial cluster Andrews-Lindsay 1 and a 4% distance solution for its planetary nebula

Majaess, Daniel J.; Carraro, G.; Moni Bidin, C.; Bonatto, C.; Turner, David Gerald, 1945-; Moyano, M.; Berdnikov, L.; Giorgi, E. (EDP Sciences, 2014-07)

Andrews-Lindsay 1 is a pertinent open cluster because it may host the planetary nebula (PN) PHR 1315-6555, yet ambiguities linger concerning its fundamental parameters (>50% scatter). New multiband BV JHW₁₋₄ ...
On the detection of Lorentzian profiles in a power spectrum: a Bayesian approach using ignorance priors

Guenther, David B.; Gruberbauer, Michael; Kallinger, T.; Weiss, W. W. (EDP Sciences, 2009-11)

Aims. Deriving accurate frequencies, amplitudes, and mode lifetimes from stochastically driven pulsation is challenging, more so, if one demands that realistic error estimates be given for all model fitting parameters. As ...
On the estimation and detection of the Rees–Sciama effect

Fullana, M. J.; Arnau, J. V.; Thacker, Robert John, 1970-; Couchman, H. M. P.; Sáez, D. (Oxford University Press, 2017-02)

Maps of the Rees–Sciama (RS) effect are simulated using the parallel N-body code, hydra, and a run-time ray-tracing procedure. A method designed for the analysis of small, square cosmic microwave background (CMB) maps is ...
On the existence of young embedded clusters at high Galactic latitude

Turner, David Gerald, 1945-; Carraro, G.; Panko, E. A. (Oxford University Press, 2017-05-24)

Careful analyses of photometric and star count data available for the nine putative young clusters identified by Camargo et al. at high Galactic latitudes reveal that none of the groups contain early-type stars, and most ...
On the form of the Spitzer Leavitt Law and its dependence on metallicity

Majaess, Daniel J.; Turner, David Gerald, 1945-; Gieren, W. (American Astronomical Society, 2013-08-01)

The form and metallicity dependence of Spitzer mid-infrared Cepheid relations are a source of debate. Consequently, Spitzer 3.6 and 4.5 [mu]m period–magnitude and period–color diagrams were re-examined via robust routines, ...
On the lack of correlation between [O iii]/[O ii] and Lyman continuum escape fraction

Bassett, R.; Ryan-Weber, E. V.; Cooke, Jeffery; Diaz, C. G.; Nanayakkara, T.; Yuan, T. T.; Spitler, L. R.; Meštrić, U.; Garel, T.; Sawicki, Marcin, 1969-; Gwyn, S.; Golob, Anneya (Oxford University PressRoyal Astronomical Society, 2019-03)

We present the first results of our pilot study of eight photometrically selected Lyman-continuum (LyC) emitting galaxy candidates from the COSMOS field and focus on their optical emission line ratios. Observations were ...
On the orbits of G-closure points of ultimately nonexpansive mappings

Kiang, Mo Tak (Hindawi Publishing CorporationSpringer, 2006)

Let X be a closed subset of a Banach space and G an ultimately nonexpansive commutative semigroup of continuous selfmappings. If the G-closure of X is nonempty, then the closure of the orbit of any G-closure point is a ...
On the temporal dynamics of spatial stimulus-response transfer between spatial incompatibility and Simon tasks

Ivanoff, Jason, 1974-; Blagdon, Ryan Andrew; Feener, Stefanie; McNeil, Melanie; Muir, Paul H. (Frontiers Research Foundation, 2014-08-19)

The Simon effect refers to the performance (response time and accuracy) advantage for responses that spatially correspond to the task-irrelevant location of a stimulus. It has been attributed to a natural tendency to respond ...
One-neutron knockout from [superscript 24–28]Ne isotopes

Rodriguez-Tajes, C.; Cortina-Gil, D.; Alvarez-Pol, H.; Aumann, T.; Benjamin, E.; Benlliure, J.; Borge, M. J. G.; Caamano, M.; Casarejos, E.; Chatillon, A.; Kanungo, Rituparna (Elsevier, 2010)

One-neutron knockout reactions of [superscript 24–28]Ne in a beryllium target have been studied in the Fragment Separator (FRS), at GSI. The results include inclusive one-neutron knockout cross-sections as well as ...
One-neutron removal from [superscript 29]Ne: defining the lower limits of the island of inversion

Kobayashi, N.; Nakamura, T.; Kondo, Y.; Tostevin, J. A.; Aoi, N.; Baba, H.; Barthelemy, R.; Famiano, M. A.; Fukuda, N.; Inabe, N.; Kanungo, Rituparna (American Physical Society, 2016-01-20)

Background: Very neutron-rich isotopes, including [superscript 30−32]Ne, in the vicinity of N = 20 are known to exhibit ground states dominated by fp-shell intruder configurations: the “island of inversion.” Systematics ...
One-neutron removal reactions on Al isotopes around the N = 20 shell closure

Nociforo, C.; Prochazka, A.; Kanungo, Rituparna; Aumann, T.; Boutin, D.; Cortina-Gil, D.; Davids, B.; Diakaki, M.; Farinon, F.; Geissel, H. (American Physical Society, 2012-04-12)

The one-neutron removal cross sections of neutron-rich Al isotopes and longitudinal momentum distributions of the residues have been measured for A = 33 to 36 at relativistic energies ([approximate to] 900 MeV/u). The ...
Ophiolitic mélanges in crustal-scale fault zones: implications for the Late Palaeozoic tectonic evolution in West Junggar, China

Chen, Shi; Pe-Piper, Georgia; Piper, David J. W.; Guo, Zhaojie (American Geophysical Union, 2014-12)

The Baijiantan and Darbut ophiolites in West Junggar are exposed in steep fault zones (>70°) containing serpentinite mélange, in contact on either side with regionally distributed Upper Devonian-Lower ...
Orbitally modulated photoexcited Si I emission in the eclipsing composite-spectrum binary [zeta] Aurigae

Harper, G. M.; Griffin, R. E. M.; Bennett, Philip Desmond, 1952-; O'Riain, N. (Oxford University Press, 2016-02-21)

We examine the little-known phenomenon of orbitally modulated Si I emission at [lambda] 3905.523 [angstrom] and [lambda] 4102.936 [angstrom] in composite-spectrum binaries, with specific reference to [zeta] Aurigae (K4 Ib ...
Order barriers and characterizations for continuous mono-implicit Runge-Kutta schemes

Muir, Paul H.; Owren, Brynjulf (American Mathematical Society, 1993-10)

The mono-implicit Runge-Kutta (MIRK) schemes, a subset of the family of implicit Runge-Kutta (IRK) schemes, were originally proposed for the numerical solution of initial value ODEs more than fifteen years ago. During the ...
Order results for mono-implicit Runge-Kutta methods

Burrage, K.; Chipman, F. H.; Muir, Paul H. (Society for Industrial and Applied Mathematics, 1994-06)

The mono-implicit Runge-Kutta methods are a subclass of the well-known implicit Runge-Kutta methods and have application in the efficient numerical solution of systems of initial and boundary value ordinary differential ...
Organoaluminum(III) complexes of the bis-N,N[prime]-(2,6-diisopropylphenyl)imidazolin-2-imine ligand

Todd, Angela D. K.; McClennan, William L.; Masuda, Jason Douglas, 1977- (Royal Society of Chemistry, 2016)

The reaction of trimethylaluminum with the bis-N,N[prime] -(2,6-diisopropylphenyl)imidazolin-2-imine (L–H) ligand 1 afforded several new organometallic aluminium complexes. Reaction in a 1 : 1 stoichiometry at room temperature ...
Origin and Reticulate Evolutionary Process of Wheatgrass Elymus trachycaulus (Triticeae: Poaceae)

Zuo, Hongwei; Wu, Panpan; Wu, Dexiang; Sun, Genlou (Public Library of Science, 2015-05-06)

To study origin and evolutionary dynamics of tetraploid Elymus trachycaulus that has been cytologically defined as containing StH genomes, thirteen accessions of E. trachycaulus were analyzed using two low-copy nuclear ...
The origin of blueshifted absorption features in the X-ray spectrum of PG 1211+143: outflow or disc

Gallo, Luigi C.; Fabian, A. C. (Oxford University Press, 2013-09)

In some radio-quiet active galactic nuclei (AGN), high-energy absorption features in the X-ray spectra have been interpreted as ultrafast outflows (UFOs) – highly ionized material (e.g. Fe XXV and Fe XXVI) ejected at mildly ...
Origin of worldwide cultivated barley revealed by NAM-1 gene and grain protein content

Wang, Yonggang; Ren, Xifeng; Sun, Dongfa; Sun, Genlou (Frontiers Media, 2015-09-30)

The origin, evolution, and distribution of cultivated barley provides powerful insights into the historic origin and early spread of agrarian culture. Here, population-based genetic diversity and phylogenetic analyses were ...