pinecone/core-2020-05-10-deduplication huggingface dataset:
A near-infrared interferometric survey of debris-disk stars. VI.
  Extending the exozodiacal light survey with CHARA/JouFLU

We report the results of high-angular-resolution observations that search for
exozodiacal light in a sample of main sequence stars and sub-giants. Using the
"jouvence" of the fiber linked unit for optical recombination (JouFLU) at the
center for high angular resolution astronomy (CHARA) telescope array, we have
observed a total of 44 stars. Out of the 44 stars, 33 are new stars added to
the initial, previously published survey of 42 stars performed at CHARA with
the fiber linked unit for optical recombiation (FLUOR). Since the start of the
survey extension, we have detected a K-band circumstellar excess for six new
stars at the ~ 1\% level or higher, four of which are known or candidate
binaries, and two for which the excess could be attributed to exozodiacal dust.
We have also performed follow-up observations of 11 of the stars observed in
the previously published survey and found generally consistent results. We do
however detect a significantly larger excess on three of these follow-up
targets: Altair, $\upsilon$ And and $\kappa$ CrB. Interestingly, the last two
are known exoplanet host stars. We perform a statistical analysis of the JouFLU
and FLUOR samples combined, which yields an overall exozodi detection rate of
$21.7^{+5.7}_{-4.1}\%$. We also find that the K-band excess in FGK-type stars
correlates with the existence of an outer reservoir of cold ($\lesssim 100\,$K)
dust at the $99\%$ confidence level, while the same cannot be said for A-type
stars.Comment: Accepted for publication in Astronomy & Astrophysics. 18 pages, 20
  figure
Search for a charged Higgs boson in pp collisions at sqrt(s) = 8 TeV

A search for a charged Higgs boson is performed with a data sample corresponding to an integrated luminosity of 19.7 +/- 0.5 inverse-femtobarns collected with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV. The charged Higgs boson is searched for in top quark decays for m(H+/-) &lt; m(t) - m(b), and in the direct production pp -&gt; t (b) H+/- for m(H+/-) &gt; m(t) - m(b). The H+/- -&gt; tau+/- nu[tau] and H+/- -&gt; t b decay modes in the final states tau[h]+jets, mu tau[h], l+jets, and ll' (l = e, mu) are considered in the search. No signal is observed and 95\% confidence level upper limits are set on the charged Higgs boson production. A model-independent upper limit on the product branching fraction B( t -&gt; H+/- b ) B( H+/- -&gt; tau+/- nu[tau] )= 1.2-0.15\% is obtained in the mass range m(H+/-) = 80-160 GeV, while the upper limit on the cross section times branching fraction sigma( pp -&gt; t (b) H+/- ) B( H+/- -&gt; tau+/- nu[tau] ) = 0.38-0.025 pb is set in the mass range m(H+/-) = 180-600 GeV. Here, cross section sigma( pp -&gt; t (b) H+/- ) stands for the sum sigma( pp -&gt; tbar (b) H+ ) + sigma( pp -&gt; t (bbar) H- ). Assuming B( H+/- -&gt; t b ) = 1, an upper limit on sigma ( pp -&gt; t (b) H+/- ) of 2.0-0.13 pb is set for m(H+/-) = 180-600 GeV. The combination of all considered decay modes and final states is used to set exclusion limits in the m(H+/-)-tan(beta) parameter space in different MSSM benchmark scenarios
The role of land surface schemes in the regional climate model (RegCM) for seasonal scale simulations over Western Himalayas

This document is the Accepted Manuscript version of the following article: Pushp Raj Tiwari, et al, 'The role of land surface schemes in teh regional climate model (RegCM) for seasonal scale simulations over Western Himalaya', Atmosfera, Vol. 28 (2): 129-142, April 2015, doi: http://www.revistascca.unam.mx/atm/index.php/atm/article/view/44598/43373.Climate prediction over the Western Himalaya is a challenging task due to the highly variable altitude and orientation of orographic barriers. Surface characteristics also play a vital role in climate simulations and need appropriate representation in the models. In this study, two land surface parameterization schemes (LSPS), the Biosphere-Atmosphere Transfer Scheme (BATS) and the Common Land Model (CLM, version 3.5) in the regional climate model (RegCM, version 4) have been tested over the Himalayan region for nine distinct winter seasons in respect of seasonal precipitation (three years each for excess, normal and deficit). Reanalysis II data of the National Centers for Environmental Prediction (NCEP)/Department of Energy (DOE) have been used as initial and lateral boundary conditions for the RegCM model. In order to provide land surface boundary conditions in the RegCM model, geophysical parameters (10 min resolution) obtained from United States of Geophysical Survey were used. The performance of two LSPS (CLM and BATS) coupled with the RegCM is evaluated against gridded precipitation and surface temperature data sets from the India Meteorological Department (IMD). It is found that the simulated surface temperature and precipitation are better represented in the CLM scheme than in the BATS when compared with observations. Further, several statistical analysis such as bias, root mean square error (RMSE), spatial correlation coefficient (CC) and skill scores like the equitable threat score (ETS) and the probability of detection (POD) are estimated for evaluating RegCM simulations using both LSPS. Results indicate that the RMSE decreases and the CC increases with the use of the CLM compared to BATS. ETS and POD also indicate that the performance of the model is better with the CLM than with the BATS in simulating seasonal scale precipitation. Overall, results suggest that the performance of the RegCM coupled with the CLM scheme improves the model skill in predicting winter precipitation (by 15-25%) and temperature (by 10-20%) over the Western Himalaya
Application of hybrid binomial Langevin-multiple mapping conditioning method to reacting jet flow

The hybrid binomial Langevin-MMC (Multiple Mapping Conditioning) method combines the advantages of the binomial Langevin and MMC models in a consistent manner to overcome difficulties in each. The binomial Langevin method provides joint velocity-scalar statistics, but the treatment of scalars is complex since specification of the bounds is not trivial. The MMC method is capable of dealing with the mixing of any number of scalars, but it can be difficult to specify coefficients involving averages of the scalars and the introduced reference space. The difficulties are overcome by using the velocity statistics from the binomial Langevin model to obtain the reference variable for MMC and, subsequently, the mixing of MMC scalars is performed in a manner that minimises the difference between the mixture fractions for each submodel. The current work expands past studies of NO conversion in a mixing layer to include a study of the Sandia D Flame in preparation for the application to more complex combustion phenomena. Results compare favourably with experimental data and other models
Search for supersymmetry in events with a lepton, a photon, and large missing transverse energy in pp collisions at √s = 7 TeV

A search is performed for an excess of events, over the standard model expectations, with a photon, a lepton, and large missing transverse energy in pp collisions at sqrt(s) = 7 TeV. Such events are expected in many new physics models, in particular a supersymmetric theory that is broken via a gauge-mediated mechanism, when the lightest charged and neutral gauginos are mass degenerate. The data sample used in this search corresponds to an integrated luminosity of 35 inverse picobarns collected with the CMS detector at the LHC. No evidence of such an excess above the standard model backgrounds, dominated by W-gamma production, is found. The results are presented as 95% confidence level upper limits on the cross section for a benchmark gauge-mediated scenario, and are then converted into exclusion limits on the squark, gluino, and wino masses
Measurement of the Underlying Event Activity at the LHC with √s = 7 TeV and Comparison with √s = 0.9 TeV

A measurement of the underlying activity in scattering processes with a hard scale in the several GeV region is performed in proton-proton collisions at sqrt(s) = 0.9 and 7 TeV, using data collected by the CMS experiment at the LHC. The production of charged particles with pseudorapidity |eta| < 2 and transverse momentum pT > 0.5 GeV/c is studied in the azimuthal region transverse to that of the leading set of charged particles forming a track-jet. A significant growth of the average multiplicity and scalar-pT sum of the particles in the transverse region is observed with increasing pT of the leading track-jet, followed by a much slower rise above a few GeV/c. For track-jet pT larger than a few GeV/c, the activity in the transverse region is approximately doubled with a centre-of-mass energy increase from 0.9 to 7 TeV. Predictions of several QCD-inspired models as implemented in PYTHIA are compared to the data
Interaction between vertical and horizontal tax competition: evidence and some theory.

The aim of this paper is to determine to what extent and how federal taxes affect local tax decisions. Testing the impact of an increase in the federal tax on horizontal tax competition with Canada-US data for 1984--1994, we find evidence that an increase in federal tax affects horizontal tax competition. The novelty of our approach is that it indirectly tests the effect of an increase in federal tax on provincial tax, by testing whether provincial reaction to an increase in neighboring tax changes according to the federal tax level. The test allows for control of yearly macroeconomic shocks by inserting dummies for each year. These are not used in the empirical literature on vertical tax competition because they would cause perfect collinearity with the federal tax.
Characterization of lead-recycling facility emissions at various workplaces: Major insights for sanitary risks assessment

Most available studies on lead smelter emissions deal with the environmental impact of outdoor particles,\ud
but only a few focus on air quality at workplaces. The objective of this study is to physically and chemically\ud
characterize the Pb-rich particles emitted at different workplaces in a lead recycling plant. A multiscale\ud
characterization was conducted from bulk analysis to the level of individual particles, to assess the\ud
particles properties in relation with Pb speciation and availability. Process PM from various origins were\ud
sampled and then compared; namely Furnace and Refining PM respectively present in the smelter and at\ud
refinery workplaces, Emissions PM present in channeled emissions.\ud
These particles first differed by their morphology and size distribution, with finer particles found in\ud
emissions. Differences observed in chemical composition could be explained by the industrial processes.\ud
All PM contained the same major phases (Pb, PbS, PbO, PbSO4 and PbO·PbSO4) but differed on the nature\ud
and amount of minor phases. Due to high content in PM, Pb concentrations in the CaCl2 extractant reached\ud
relatively high values (40mgL−1). However, the ratios (soluble/total) of CaCl2 exchangeable Pb were\ud
relatively low (<0.02%) in comparison with Cd (up to 18%). These results highlight the interest to assess\ud
the soluble fractions of all metals (minor and major) and discuss both total metal concentrations and\ud
ratios for risk evaluations. In most cases metal extractability increased with decreasing size of particles,\ud
in particular, lead exchangeability was highest for channeled emissions.\ud
Such type of study could help in the choice of targeted sanitary protection procedures and for further\ud
toxicological investigations. In the present context, particular attention is given to Emissions and Furnace\ud
PM. Moreover, exposure to other metals than Pb should be considered
Elastic anisotropy and extreme Poisson's ratios in single crystals

Copyright © 2010 Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Acta Materialia. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Acta Materialia, Vol. 58 Issue 19 (2010). DOI:  10.1016/j.actamat.2010.08.006The relationship between elastic anisotropy and extreme Poisson’s ratio behaviour (either positive or negative) in single-crystalline materials has been investigated using experimentally determined single-crystal elastic constants for a wide range of solid materials. This makes use of a recently proposed elastic anisotropy index that is applicable to all crystal symmetries. For many real materials we find a striking correlation between the value of the elastic anisotropy index and the magnitudes of maximum and minimum Poisson’s ratios this is independent of crystal symmetry. This structure–property relationship provides new examples of auxetics and shows that negative Poisson’s ratios are actually not uncommon among many classes of inorganic (and organic) materials, including elemental metals, alloys, ionic solids, molecular solids and giant covalent networks
Thallium elemental behavior and stable isotope fractionation during magmatic processes

JP was partly supported by NERC fellowship NE/H01313X/2. AB was supported by a Janet Watson Earth Science and Engineering Departmental PhD studentship and MW was supported in part by an undergraduate research opportunity award from Imperial College London. Trace element analyses were supported from US NSF Grant EAR-1456814 to TP.Stable thallium (Tl) isotopes are an extremely sensitive tracer for the addition of small amounts of sediments or materials altered at low temperatures to the source(s) of mantle-derived melts. The ability of Tl to trace such materials is due to the large concentration contrast between the mantle (Tl < 2 ng/g) and possible exotic inputs (Tl ~ 100 ng/g to > μg/g), which also often display fractionated Tl isotope compositions. However, the magnitude of Tl isotope fractionation induced by igneous processes alone has not been systematically assessed. Here, two suites of co-genetic magmas, spanning a large range of differentiation, from Hekla, Iceland, and Anatahan, in the Mariana arc, are used to assess the behavior of thallium and its stable isotope variations during magmatic processes. Thallium behaves as a near-perfectly incompatible lithophile element throughout magmatic evolution, mirroring elements such as Rb, Cs, and K. Lavas from Hekla have restricted Cs/Tl ratios and stable Tl isotope compositions, which overlap with mantle estimates. Lavas from subduction-related Anatahan volcano also have a restricted range in Tl isotope composition, which overlaps with Hekla and MORB, demonstrating that fractional crystallisation and partial melting does not fractionate stable Tl isotopes. Subduction environments display variable Cs/Tl, indicating that the subduction process commonly fractionates these two elements. The immunity of thallium stable isotopes to fractionation by magmatic processes coupled with its extreme sensitivity for tracing pelagic sediments, FeMn crusts and low temperature altered oceanic crust highlight its value in elucidating the nature of mantle sources of both oceanic basalts and arc lavas. Critically, meaningful interpretation of thallium isotope compositions need not be restricted to primitive lavas.PostprintPeer reviewe
A systematic review: The effects of orientation programs for cancer patients and their family/carers

OBJECTIVES:     To assess the effects of information interventions which orient patients and their carers/family to a cancer care facility and the services available within the facility.    DESIGN:     Systematic review of randomised controlled trials (RCTs), cluster RCTs and quasi-RCTs.    DATA SOURCES:     MEDLINE, CINAHL, PsycINFO, EMBASE and the Cochrane Central Register of Controlled Trials.    METHODS:     We included studies evaluating the effect of an orientation intervention, compared with a control group which received usual care, or with trials comparing one orientation intervention with another orientation intervention.    RESULTS:     Four RCTs of 610 participants met the criteria for inclusion. Findings from two RCTs demonstrated significant benefits of the orientation intervention in relation to reduced levels of distress (mean difference (MD): -8.96, 95% confidence interval (95%CI): -11.79 to -6.13), but non-significant benefits in relation to the levels state anxiety levels (MD -9.77) (95%CI: -24.96 to 5.41). There are insufficient data on the other outcomes of interest.    CONCLUSIONS:     This review has demonstrated the feasibility and some potential benefits of orientation interventions. There was a low level of evidence to suggest that orientation interventions can reduce distress in patients. However, other outcomes, including patient knowledge recall/satisfaction, remain inconclusive. The majority of trials were subjected to high risk of bias and were likely to be insufficiently powered. Further well conducted and powered RCTs are required to provide evidence for determining the most appropriate intensity, nature, mode and resources for such interventions. Patient and carer-focused outcomes should be included.Griffith Health, School of Nursing and MidwiferyFull Tex
Behind the screen : commercial sex, digital spaces and working online

The rise of the internet and related digital technologies has had a profound impact on many aspects of people's working and social lives, including the buying and selling of sexual services. In addition to providing new ways to advertise for sex workers who provide services to clients in person, the internet has also seen the development of completely new forms of commercial sex (like webcamming) that take place entirely in an online environment. Using the largest datasets created in the UK/Europe, this article explores how sex workers use the internet and digital technologies to facilitate the range of different services that they offer. We identify the ways in which the internet has improved the ability for sex workers to organize and professionalize their services, with increasing profit and safety being core objectives. At the same time, we explore some of the challenges and potential (new) harms that arise for sex workers working online. In this paper, we aim to explore the diversity of ways in which sex workers interact with online and digital technology. This paper advances knowledge by: a) demonstrating how the shift to online working developed for sex workers and their views on the importance of the internet to their working lives; b) exposing the different marketing strategies adopted by sex workers, including the use of social media and personal websites in building an online brand; and c) discussing the impact of online reviews and the wider culture of reviewing commercial sexual services
Precision study of the η→μμγ and ω→μ+μμπ0 electromagnetic transition form-factors and of the ρ→μμ line shape in NA60

International audienceThe NA60 experiment studied low-mass muon pair production in proton–nucleus (p–A) collisions using a 400 GeV proton beam at the CERN SPS. The low-mass dimuon spectrum is well described by the superposition of the two-body and Dalitz decays of the light neutral mesons η , ρ , ω , η′ and ϕ , and no evidence of in-medium effects is found. A new high-precision measurement of the electromagnetic transition form factors of the η and ω was performed, profiting from a 10 times larger data sample than the peripheral In–In sample previously collected by NA60. Using the pole-parameterisation |F(M)|2=(1−M2/Λ2)−2 we find Λη−2=1.934±0.067 (stat.) ±0.050 (syst.) (GeV/c2)−2 and Λω−2=2.223±0.026 (stat.) ±0.037 (syst.) (GeV/c2)−2 . An improved value of the branching ratio of the Dalitz decay ω→μ+μ−π0 is also obtained, with BR(ω→μ+μ−π0)=[1.41±0.09 (stat.)±0.15 (syst.)]×10−4 . Further results refer to the ρ line shape and a new limit on ρ/ω interference in hadron interactions
Genetic characterisation of Escherichia coli RecN protein as a member of SMC family of proteins

YesThe proteins of SMC family are characterised by having Walker A and B sites. The Escherichia coli RecN protein is a prokaryotic member of SMC family that involved in the induced excision of Tn10 and the repair of the DNA double strand breaks. In this work, the Walker A nucleotide binding site of the E. coli RecN protein was mutated by changing the highly conserved lysine residue 35 to the aspartic acid (D), designated as recN(K35D). Reverse genetics was utilized to delete the entire recN gene (Delta recN108) or introduce the recN(K35D) gene into the E. coli chromosomal DNA. The recN(K35D) cells showed decreasing in the frequency of excision of Tn10 from gal7
A new characterization of P6-free graphs.

We study P6-free graphs, i.e., graphs that do not contain an induced path on six vertices. Our main result is a new characterization of this graph class: a graph G is P6-free if and only if each connected induced subgraph of G on more than one vertex contains a dominating induced cycle on six vertices or a dominating (not necessarily induced) complete bipartite subgraph. This characterization is minimal in the sense that there exists an infinite family of P6-free graphs for which a smallest connected dominating subgraph is a (not induced) complete bipartite graph. Our characterization of P6-free graphs strengthens results of Liu and Zhou, and of Liu, Peng and Zhao. Our proof has the extra advantage of being constructive: we present an algorithm that finds such a dominating subgraph of a connected P6-free graph in polynomial time. This enables us to solve the Hypergraph 2-Colorability problem in polynomial time for the class of hypergraphs with P6-free incidence graphs.\ud
\u
Mixing 3-colourings in bipartite graphs.

For a 3-colourable graph G, the 3-colour graph of G, denoted C_3(G), is the graph with node set the proper vertex 3-colourings of G, and two nodes adjacent whenever the corresponding colourings differ on precisely one vertex of G. We consider the following question: given G, how easily can one decide whether or not C_3(G) is connected? We show that the 3-colour graph of a 3-chromatic graph is never connected, and characterise the bipartite graphs for which View the MathML source  is connected. We also show that the problem of deciding the connectedness of the 3-colour graph of a bipartite graph is coNP-complete, but that restricted to planar bipartite graphs, the question is answerable in polynomial time
On the non-triviality of certain spaces of analytic functions : hyperfunctions and ultrahyperfunctions of fast growth

We study function spaces consisting of analytic functions with fast decay on horizontal strips of the complex plane with respect to a given weight function. Their duals, so called spaces of (ultra)hyperfunctions of fast growth, generalize the spaces of Fourier hyperfunctions and Fourier ultrahyperfunctions. An analytic representation theory for their duals is developed and applied to characterize the non-triviality of these function spaces in terms of the growth order of the weight function. In particular, we show that the Gelfand-Shilov spaces of Beurling type and Roumieu type are non-trivial if and only if 

sup p >= 2 (log p)(p)/h(p)M(p) < infinity, 

for all h > 0 and some h > 0, respectively. We also study boundary values of holomorphic functions in spaces of ultradistributions of exponential type, which may be of quasianalytic type