pinecone/core-2020-05-10-deduplication huggingface dataset:
Homogeneous spectroscopic parameters for bright planet host stars from
  the northern hemisphere

Aims. In this work we derive new precise and homogeneous parameters for 37
stars with planets. For this purpose, we analyze high resolution spectra
obtained by the NARVAL spectrograph for a sample composed of bright planet host
stars in the northern hemisphere. The new parameters are included in the
SWEET-Cat online catalogue. Methods. To ensure that the catalogue is
homogeneous, we use our standard spectroscopic analysis procedure, ARES+MOOG,
to derive effective temperatures, surface gravities, and metallicities. These
spectroscopic stellar parameters are then used as input to compute the stellar
mass and radius, which are fundamental for the derivation of the planetary mass
and radius. Results. We show that the spectroscopic parameters, masses, and
radii are generally in good agreement with the values available in online
databases of exoplanets. There are some exceptions, especially for the evolved
stars. These are analyzed in detail focusing on the effect of the stellar mass
on the derived planetary mass. Conclusions. We conclude that the stellar mass
estimations for giant stars should be managed with extreme caution when using
them to compute the planetary masses. We report examples within this sample
where the differences in planetary mass can be as high as 100% in the most
extreme cases.Comment: 6 pages; 3 Figures, 2 Tables in appendix; Accepted for A&
Higgs boson production and decay at $e^{+}e^{-}$ colliders as a probe of
  the Left-Right twin Higgs model

In the framework of the Left-Right twin Higgs (LRTH) model, we consider the
constrains from the latest search for high-mass dilepton resonances at the LHC
and find that the heavy neutral boson $Z_H$ is excluded with mass below 2.76
TeV. Under these constrains, we study the Higgs-Gauge coupling production
processes $e^{+}e^{-}\rightarrow ZH$, $e^{+}e^{-}\rightarrow
\nu_{e}\bar{\nu_{e}}H$ and $e^{+}e^{-}\rightarrow e^{+}e^{-}H$, top quark
Yukawa coupling production process $e^{+}e^{-}\rightarrow t\bar{t}H$, Higgs
self-couplings production processes $e^{+}e^{-}\rightarrow ZHH$ and
$e^{+}e^{-}\rightarrow \nu_{e}\bar{\nu_{e}}HH$ at $e^{+}e^{-}$ colliders.
Besides, we study the major decay modes of the Higgs boson, namely
$h\rightarrow f\bar{f}$($f=b,c,\tau$), $VV^{*}(V=W, Z)$, $gg$, $\gamma\gamma$.
We find that the LRTH effects are sizable so that the Higgs boson processes at
$e^{+}e^{-}$ collider can be a sensitive probe for the LRTH model.Comment: Final version to appear in Nucl.Phys.
An alternative Hamiltonian formulation for the Pais-Uhlenbeck oscillator

Ostrogradsky's method allows one to construct Hamiltonian formulation for a
higher derivative system. An application of this approach to the Pais-Uhlenbeck
oscillator yields the Hamiltonian which is unbounded from below. This leads to
the ghost problem in quantum theory. In order to avoid this nasty feature, the
technique previously developed in [Acta Phys. Polon. B 36 (2005) 2115] is used
to construct an alternative Hamiltonian formulation for the multidimensional
Pais-Uhlenbeck oscillator of arbitrary even order with distinct frequencies of
oscillation. This construction is also generalized to the case of an N=2
supersymmetric Pais-Uhlenbeck oscillator.Comment: Typos corrected. Published versio
Euro-VO - Coordination of Virtual Observatory activities in Europe

The European Virtual Observatory Euro-VO has been coordinating European VO
activities through a series of projects co-funded by the European Commission
over the last 15 years. The bulk of VO work in Europe is ensured by the
national VO initiatives and those of intergovernmental agencies. VO activities
at the European level coordinate the work in support of the three "pillars" of
the Virtual Observatory: support to the scientific community, take-up by the
data providers, and technological activities. Several Euro-VO projects have
also provided direct support to selected developments and prototyping. This
paper explains the methodology used by Euro-VO over the years. It summarizes
the activities which were performed and their evolutions at different stages of
the development of the VO, explains the Euro-VO role with respect to the
international and national levels of VO activities, details the lessons learnt
for best practices for the coordination of the VO building blocks, and the
liaison with other European initiatives, documenting the added-value of
European coordination. Finally, the current status and next steps of Euro-VO
are briefly addressed.Comment: 31 pages, 3 figure
Massive stars formed in atomic hydrogen reservoirs: HI observations of
  gamma-ray burst host galaxies

Long gamma-ray bursts (GRBs), among the most energetic events in the
Universe, are explosions of massive and short-lived stars, so they pinpoint
locations of recent star formation. However, several GRB host galaxies have
recently been found to be deficient in molecular gas (H2), believed to be the
fuel of star formation. Moreover, optical spectroscopy of GRB afterglows
implies that the molecular phase constitutes only a small fraction of the gas
along the GRB line-of-sight. Here we report the first ever 21 cm line
observations of GRB host galaxies, using the Australia Telescope Compact Array,
implying high levels of atomic hydrogen (HI), which suggests that the
connection between atomic gas and star formation is stronger than previously
thought, with star formation being potentially directly fuelled by atomic gas
(or with very efficient HI-to-H2 conversion and rapid exhaustion of molecular
gas), as has been theoretically shown to be possible. This can happen in low
metallicity gas near the onset of star formation, because cooling of gas
(necessary for star formation) is faster than the HI-to-H2 conversion. Indeed,
large atomic gas reservoirs, together with low molecular gas masses, stellar
and dust masses are consistent with GRB hosts being preferentially galaxies
which have very recently started a star formation episode after accreting
metal-poor gas from the intergalactic medium. This provides a natural route for
forming GRBs in low-metallicity environments. The gas inflow scenario is also
consistent with the existence of the companion HI object with no optical
counterpart ~19 kpc from the GRB 060505 host, and with the fact that the HI
centroids of the GRB 980425 and 060505 hosts do not coincide with optical
centres of these galaxies, but are located close to the GRB positions.Comment: Accepted to A&A. 16 pages, 6 figures, 5 table
Towards an ontology modeling tool. A validation in software engineering scenarios.

Ontology creation and management related processes are very important to define and develop semantic services. Ontology Engineering is the research field that provides the mechanisms to manage the life cycle of the ontologies. However, the process of building ontologies can be tedious and sometimes exhaustive. OWL VisMod is a tool designed for developing ontological engineering based on visual analytics concep tual modeling for OWL ontologies life cycle management, supporting both creation and understanding tasks. This paper is devoted to evaluate OWL VisMod through a set of defined tasks. The same tasks also will be done with the most known tool in Ontology Engineering, Protégé, in order to compare the obtained results and be able to know how is OWL VisMod perceived for the expert users. The comparison shows that both tools have similar acceptation scores, but OWL VisMod presents better feelings regard ing user’s perception tasks due to the visual analytics influence
The protoplanetary disk of FT Tauri : multi-wavelength data analysis and modeling

This work is supported by the Swiss National Science Foundation. L.P. acknowledges the funding from the FP7 Intra-European Marie Curie Fellowship (PIEF-GA-2009-253896). L.P. has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n. 267251. I.K., W.F.T., F.M., and P.W. acknowledge funding from an NWO MEERVOUD grant and from the EU FP7- 2011 under Grant Agreement nr. 284405. F.M. acknowledges support from the Millennium Science Initiative (Chilean Ministry of Economy), through grant Nucleus P10-022-F. I. Pascucci acknowledges NASA/ADP Grant NNX10AD62G.Investigating the evolution of protoplanetary disks is crucial for our understanding of star and planet formation. Several theoretical and observational studies have been performed in the last decades to advance this knowledge. FT Tauri is a young star in the Taurus star forming region that was included in a number of spectroscopic and photometric surveys. We investigate the properties of the star, the circumstellar disk, and the accretion and ejection processes and propose a consistent gas and dust model also as a reference for future observational studies. We performed a multi-wavelength data analysis to derive the basic stellar and disk properties, as well as mass accretion/outflow rate from TNG-Dolores, WHT-Liris, NOT-Notcam, Keck-Nirspec, and Herschel-Pacs spectra. From the literature, we compiled a complete Spectral Energy Distribution. We then performed detailed disk modeling using the MCFOST and ProDiMo codes. Multi-wavelengths spectroscopic and photometric measurements were compared with the reddened predictions of the codes in order to constrain the disk properties. This object can serve as a benchmark for primordial disks with significant mass accretion rate, high gas content and typical size.PostprintPeer reviewe
Opportunism and diversification : entrepreneurship and livelihood strategies in uncertain times

As economic crisis deepens across Europe people are forced to find innovative strategies to accommodate circumstances of chronic uncertainty. Even with a second multi-billion euro bailout package secured for Greece, the prospects of a sustainable recovery in the near future look bleak. However, crisis has also created dynamic spaces for entrepreneurial opportunism and diversification resulting in social mobility, relocation, shifts in livelihood strategy and a burgeoning informal economy. Although economic systems are currently undergoing radical reassessment, social demands such as competitive consumption remain. Opportunities for investment in renewable energy programmes, especially photovoltaics, are also pervasive. By considering cases of business opportunism and livelihood diversification in relation to Max Weber's concept of wertrational and notions of uncertainty, this article brings new perspectives to strategies of negotiating the worst economic crisis in living memory.Publisher PDFPeer reviewe
Quasi-exactly solvable spin 1/2 Schrödinger operators

The algebraic structures underlying quasi-exact solvability for spin 1/2 Hamiltonians in one dimension are studied in detail. Necessary and sufficient conditions for a matrix second-order differential operator preserving a space of wave functions with polynomial components to be equivalent to a Schrodinger operator are found. Systematic simplifications of these conditions are analyzed, and are then applied to the construction of new examples of multi-parameter QES spin 1/2 Hamiltonians in one dimension
Electromagnetic strength of neutron and proton single-particle nuclei

Electromagnetic strength functions of halo nuclei exhibit universal features that can be described in terms of characteristic scale parameters. For a nucleus with nucleon + core structure the reduced transition probability, as determined, e.g., by Coulomb dissociation experiments, shows a typical shape that depends on the nucleon separation energy and the orbital angular momenta in the initial and final states. The sensitivity to the final-state interaction (FSI) between the nucleon and the core can be studied systematically by varying the strength of the interaction in the continuum. In the case of neutron + core nuclei analytical results for the reduced transition probabilities are obtained by introducing the effective-range expansion. The scaling with the relevant parameters is found explicitly. General trends are observed by studying several examples of neutron +core and proton +core nuclei in a single-particle model assuming Woods-Saxon potentials. Many important features of the neutron halo case can be obtained from a square-well model. Rather simple analytical formulas are found. The nucleon-core interaction in the continuum affects the determination of astrophysical S factors at zero energy in the method of asymptotic normalisation coefficients (ANC). It is also relevant for the extrapolation of radiative capture cross sections to low energies. (c) 2005 Elsevier B.V. All rights reserved
W + W − production at high transverse momenta beyond NLO

Pair production of W gauge bosons is an important process at the LHC entering many experimental analyses, both as background in new-physics searches or Higgs measurements and as signal in precision studies and tests of the Standard Model. Therefore, accurate predictions for this class of processes are of great interest in order to exploit the full potential of LHC measurements. We use the LoopSim method to combine NLO QCD results for WW and WW + jet, as well as the loop-squared gluon-fusion contribution, to obtain approximate NNLO predictions for WW production. The cross sections are calculated with VBFNLO and include leptonic decays of the W bosons as well as finite-width and off-shell effects. We find that the size of the additional corrections beyond NLO can be significant and well outside of the NLO error bands given by renormalization and factorization scale variation. Applying a jet veto, we observe further negative corrections at NNLO, which we relate to the presence of large Sudakov logarithms
Accelerating Hilbert-Einstein universe without dynamic dark energy

By using an unmodified Einstein gravity theory it is shown that all of the speeding-up effects taking place in the current universe are entirely due to the quantum effects associated with the background radiation or to the combination of such effects with those derived from the presence of a cosmological constant, without invoking any dynamic dark energy component. We obtain that in both cases the universe accelerates at a rate slightly beyond what is predicted by a cosmological constant but does not induce any big rip singularity in the finite future. © 2006 Elsevier B.V. All rights reserved.MCYT. Research Project No. FIS2005-01181.Peer Reviewe
Holographic metals and insulators with helical symmetry.

Homogeneous, zero temperature scaling solutions with Bianchi VII spatial geometry are constructed in Einstein-Maxwell-Dilaton theory. They correspond to quantum critical saddle points with helical symmetry at finite density. Assuming AdS 5 UV asymptotics, the small frequency/(temperature) dependence of the AC/(DC) electric conductivity along the director of the helix are computed. A large class of insulating and conducting anisotropic phases is found, as well as isotropic, metallic phases. Conduction can be dominated by dissipation due to weak breaking of translation symmetry or by a quantum critical current
Late Quaternary evolution and sea-level history of a glaciated marine embayment, Bantry Bay, SW Ireland.

Ireland experienced a spatially complex pattern of relative sea-level (RSL) changes and shoreline development caused by the interplay of isostatic and eustatic (ice equivalent sea level) processes since the Last Glacial Maximum (LGM). Using a combination of high-resolution marine geophysical data, vibrocores, foraminiferal analysis and 10 AMS radiocarbon dates, we reconstruct the Late Quaternary evolution and RSL history of Bantry Bay, a large (40 km long, 5–10 km wide) embayment in SW Ireland.\ud
\ud
The data indicate two infill phases: one before and one after the LGM, separated by glacial and lowstand sediments. The pre-LGM history is not dated and the depositional history is inferred. A large sediment lobe formed at the outer edge of Bantry Bay as a lowstand ice-proximal glacimarine outwash system as the ice retreated after the LGM, at a sea level ca. 80 m lower than present. Iceberg scour immediately west of this location likely relate to the break-up of the local Kerry–Cork Ice Cap. Long curvilinear ridges, seen both offshore and on top of the sediment lobe, probably formed as shoreface ridges under stronger-than-present tidal currents during a period of RSL stability (pre-14.6 ka cal BP). A subsequent infill phase is characterised by a basin-wide erosional (ravinement) surface and the deposition of inter- and sub-tidal estuarine sediments. Although our data support the general trends, our stratigraphic and radiocarbon data suggest a higher sea level between 11 and 13.5 ka cal BP than predicted by existing glacial isostatic adjustment models
Self-referential memory in autism spectrum disorder and typical development : exploring the ownership effect.

Owned objects occupy a privileged cognitive processing status and are viewed almost as extensions of the self. It has been demonstrated that items over which a sense of ownership is felt will be better remembered than other items (an example of the “self-reference effect”). As autism spectrum disorder (ASD) is characterised by an a typical self-concept, people with ASD may not demonstrate this “ownership effect”. Two experiments were conducted which replicate and extend Cunningham, Turk, MacDonald, and Macrae (2008). In Experiment 1, neurotypical adults completed a card sorting task and cards belonging to the ‘self’ were better remembered than cards belonging to another person. In Experiment 2, adults with ASD recalled self- and other owned items equally well. These results shed light both on the relation between sense of self and the ownership effect, and the nature of the self-concept in ASD
On-shell diagrams, Graßmannians and integrability for form factors.

We apply on-shell and integrability methods that have been developed in the context of scattering amplitudes in N=4N=4 SYM theory to tree-level form factors of this theory. Focussing on the colour-ordered super form factors of the chiral part of the stress-tensor multiplet as an example, we show how to systematically construct on-shell diagrams for these form factors with the minimal form factor as further building block in addition to the three-point amplitudes. Moreover, we obtain analytic representations in terms of Graßmannian integrals in spinor helicity, twistor and momentum twistor variables. While Yangian invariance is broken by the operator insertion, we find that the form factors are eigenstates of the integrable spin-chain transfer matrix built from the monodromy matrix that yields the Yangian generators. Constructing them via the method of R operators allows to introduce deformations that preserve the integrable structure. We finally show that the integrable properties extend to minimal tree-level form factors of generic composite operators as well as certain leading singularities of their n-point loop-level form factors
The geomorphology of the Anthropocene: emergence, status and implications

This is the peer reviewed version of the following article: BROWN, A.G. ... et al, 2017. The geomorphology of the Anthropocene: emergence, status and implications. Earth Surface Processes and Landforms, 42(1), pp.71-90., which has been published in final form at http://dx.doi.org/10.1002/esp.3943. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.The Anthropocene is proposed as a new interval of geological time in which human influence on Earth and its geological record dominates over natural processes. A major challenge in demarcating the Anthropocene is that the balance between human-influenced and natural processes varies over spatial and temporal scales owing to the inherent variability of both human activities (as associated with culture and modes of development) and natural drivers (e.g. tectonic activity and sea level variation). Against this backdrop, we consider how geomorphology might contribute towards the Anthropocene debate focussing on human impact on aeolian, fluvial, cryospheric and coastal process domains, and how evidence of this impact is preserved in landforms and sedimentary records. We also consider the evidence for an explicitly anthropogenic geomorphology that includes artificial slopes and other human-created landforms. This provides the basis for discussing the theoretical and practical contributions that geomorphology can make to defining an Anthropocene stratigraphy. It is clear that the relevance of the Anthropocene concept varies considerably amongst different branches of geomorphology, depending on the history of human actions in different process domains. For example, evidence of human dominance is more widespread in fluvial and coastal records than in aeolian and cryospheric records, so geomorphologically the Anthropocene would inevitably comprise a highly diachronous lower boundary. Even to identify this lower boundary, research would need to focus on the disambiguation of human effects on geomorphological and sedimentological signatures. This would require robust data, derived from a combination of modelling and new empirical work rather than an arbitrary ‘war of possible boundaries’ associated with convenient, but disputed, `golden spikes’. Rather than being drawn into stratigraphical debates, the primary concern of geomorphology should be with the investigation of processes and landform development, so providing the underpinning science for the study of this time of critical geological transition
An investigation of how fungal infection influences drug penetration through onychomycosis patient's nail plates

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)The treatment of onychomycosis remains problematic even though there are several potent antifungal agents available for patient use. The aim of this investigation was to understand if the structural modifications that arise when a patient's nail become infected plates influences the permeation of drugs into the nail following topical application. It was hoped that through improving understanding of the nail barrier in the diseased state, the development of more effective topical treatments for onychomycosis could be facilitated. The permeation of three compounds with differing hydrophobicities; caffeine, terbinafine and amorolfine, (clogD at pH 7.4 of -0.55, 3.72 and 4.49 respectively), was assessed across both healthy and onychomycosis infected, full thickness, human nail plate sections. Transonychial water loss (TOWL) measurements performed on the healthy and diseased nails supported previous observations that the nail behaves like a porous barrier given the lack of correlation between TOWL values with the thicker, diseased nails. The flux of the more hydrophilic caffeine was two-fold greater across diseased in comparison to the healthy nails, whilst the hydrophobic molecules terbinafine and amorolfine showed no statistically significant change in their nail penetration rates. Caffeine flux across the nail was found to correlate with the TOWL measurements, though no correlation existed for the more hydrophobic drugs. This data supported the notion that the nail pores, opened up by the infection, facilitated the passage of hydrophilic molecules, whilst the keratin binding of hydrophobic molecules meant that their transport through the nail plate was unchanged. Therefore, in order to exploit the structural changes induced by nail fungal infection it would be beneficial to develop a small molecular weight, hydrophilic antifungal agent, which exhibits low levels of keratin binding