29,907 research outputs found
Preliminary Abundance Analysis of Galactic Bulge Main Sequence, Subgiant, and Giant Branch Stars Observed During Microlensing with Keck/HIRES
We present an abundance analysis of six main sequence turnoff, subgiant, and
giant branch stars toward the Galactic bulge that were observed with Keck/HIRES
during microlensing events. This is an early look at the first detailed
chemical analysis of main sequence stars in the Galactic bulge. Lensing events
allow the effective aperture of Keck to be increased beyond its current
dimensions; although, some events still stretched its spectroscopic
capabilities. Future large telescopes with high resolution and high throughput
spectrometers will allow the study of abundances in distant stellar populations
and in less evolved stars with greater ease.Comment: 8 pages including 2 figures. To appear in SPIE proceedings on
Astronomical Telescopes and Instrumentation. Uses spie.cl
Explicating the role of partnerships in changing the health and well-being of local communities: a profile of neighbourhood renewal activity focused on promoting health and well-being in Salford and the north west region and the north east of England
This scoping and mapping report is one of three outputs from a project: Explicating the role of partnerships in
changing the health and well-being of local communities, one of a number of projects in a larger Higher Education Funding Council Strategic Development Fund project ( HEFCE )
entitled: Urban Regeneration: Making a Difference. This was a collaborative venture between Manchester Metropolitan University, Northumbria University, University of Salford and
University of Central Lancashire. Bradford University was an affiliated partner
Can a combination of the conformal thin-sandwich and puncture methods yield binary black hole solutions in quasi-equilibrium?
We consider combining two important methods for constructing
quasi-equilibrium initial data for binary black holes: the conformal
thin-sandwich formalism and the puncture method. The former seeks to enforce
stationarity in the conformal three-metric and the latter attempts to avoid
internal boundaries, like minimal surfaces or apparent horizons. We show that
these two methods make partially conflicting requirements on the boundary
conditions that determine the time slices. In particular, it does not seem
possible to construct slices that are quasi-stationary and avoid physical
singularities and simultaneously are connected by an everywhere positive lapse
function, a condition which must obtain if internal boundaries are to be
avoided. Some relaxation of these conflicting requirements may yield a soluble
system, but some of the advantages that were sought in combining these
approaches will be lost.Comment: 8 pages, LaTeX2e, 2 postscript figure
Engage D2.7 Annual combined thematic workshops progress report
This deliverable reports on the organisation and results obtained from the third and fourth editions of the Engage thematic challenge (TC) workshops held in 2021. Due to the Covid-19 pandemic, the third editions of the TC2 and TC3 workshops, initially scheduled to be held in 2020, were delayed to the beginning of 2021. The TC1 and TC4 workshops reached their third edition in 2021, while TC2 and TC3 closed with the fourth edition. The main lessons learned relate to data availability, collaboration opportunities, machine learning and artificial intelligence methodologies and approaches, and incentives for future ATM implementations
Water Table Level as Influenced by Rainfall, Crop Requirements, and Tiling Method
In 1979, a portion of the research farm was tiled in a pattern to provide a good soil environment for large-tillage trial plots. This was used as an opportunity to compare tile installation methods, one using a conventional trenching machine and another using a trenchless âtile plowâ machine. The tile plow inserted plastic tile using a mole approach, which opened the soil and inserted the tile without leaving an open trench that would later require backfilling. The heaving of the soil by the tile plow did require some soil manipulation to allow cropping. Past research on this study has shown that plowing and trenching methods were not significantly different and that water table measurements were influenced more by timing of water needs of the crop being grown and intensity of the rainfall events
Water Table Level as Influenced by Rainfall, Crop Requirements, and Tiling Method during the past Three Years
In 1979, a portion of the research farm was pattern tiled including the large tillage plots. This was used as an opportunity to compare tile installation methods: a conventional trenching machine (used widely prior to late 70s), and a trenchless âtile plowâ machine. The tile plow inserted plastic tile using a mole approach, which is the current primary tiling method. This research showed that plow and trenching tiling methods were not significantly different and both provided adequate drainage. It also showed that water table measurements were influenced more by timing of water needs of the crop being grown and intensity of the rainfall event than tiling method. This report focuses on continued research completed on these trial plots from 2009 to 2011 measuring water table level
Water Table Level as Influenced by Rainfall, Crop Requirements, and Tiling Method During the Past Two Years
In 1979, a portion of the research farm was pattern tiled. This was used as an opportunity to compare tile installation methods: a conventional trenching machine (used widely prior to late 1970s) and a trenchless âtile plowâ machine. The tile plow inserted plastic tile using a mole approach, which is the current primary tiling method. This research showed plow and trenching tiling methods were not significantly different and both provided adequate drainage. It also showed that water table measurements were influenced more by timing of water needs of the crop being grown and intensity of the rainfall event than tiling method. This report focuses on continued water table monitoring from 2012 to 2013
Characterizing Compressibility of Disjoint Subgraphs with NLC Grammars
We consider compression of a given set S of isomorphic and disjoint subgraphs of a graph G using node label controlled (NLC) graph grammars. Given S and G, we characterize whether or not there exists a NLC graph grammar consisting of exactly one rule such that (1) each of the subgraphs S in G are compressed (i.e., replaced by a nonterminal) in the (unique) initial graph I , and (2) the set of generated terminal graphs is the singleton {G}.acceptance rate: 39%status: publishe
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