pinecone/core-2020-05-10-deduplication huggingface dataset:
The GPU vs Phi Debate: Risk Analytics Using Many-Core Computing

The risk of reinsurance portfolios covering globally occurring natural
catastrophes, such as earthquakes and hurricanes, is quantified by employing
simulations. These simulations are computationally intensive and require large
amounts of data to be processed. The use of many-core hardware accelerators,
such as the Intel Xeon Phi and the NVIDIA Graphics Processing Unit (GPU), are
desirable for achieving high-performance risk analytics. In this paper, we set
out to investigate how accelerators can be employed in risk analytics, focusing
on developing parallel algorithms for Aggregate Risk Analysis, a simulation
which computes the Probable Maximum Loss of a portfolio taking both primary and
secondary uncertainties into account. The key result is that both hardware
accelerators are useful in different contexts; without taking data transfer
times into account the Phi had lowest execution times when used independently
and the GPU along with a host in a hybrid platform yielded best performance.Comment: A modified version of this article is accepted to the Computers and
  Electrical Engineering Journal under the title - "The Hardware Accelerator
  Debate: A Financial Risk Case Study Using Many-Core Computing"; Blesson
  Varghese, "The Hardware Accelerator Debate: A Financial Risk Case Study Using
  Many-Core Computing," Computers and Electrical Engineering, 201
CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy
  with CAFOS

Context. CARMENES is a stabilised, high-resolution, double-channel
spectrograph at the 3.5 m Calar Alto telescope. It is optimally designed for
radial-velocity surveys of M dwarfs with potentially habitable Earth-mass
planets. Aims. We prepare a list of the brightest, single M dwarfs in each
spectral subtype observable from the northern hemisphere, from which we will
select the best planet-hunting targets for CARMENES. Methods. In this first
paper on the preparation of our input catalogue, we compiled a large amount of
public data and collected low-resolution optical spectroscopy with CAFOS at the
2.2 m Calar Alto telescope for 753 stars. We derived accurate spectral types
using a dense grid of standard stars, a double least-squares minimisation
technique, and 31 spectral indices previously defined by other authors.
Additionally, we quantified surface gravity, metallicity, and chromospheric
activity for all the stars in our sample. Results. We calculated spectral types
for all 753 stars, of which 305 are new and 448 are revised. We measured
pseudo-equivalent widths of Halpha for all the stars in our sample, concluded
that chromospheric activity does not affect spectral typing from our indices,
and tabulated 49 stars that had been reported to be young stars in open
clusters, moving groups, and stellar associations. Of the 753 stars, two are
new subdwarf candidates, three are T Tauri stars, 25 are giants, 44 are K
dwarfs, and 679 are M dwarfs. Many of the 261 investigated dwarfs in the range
M4.0-8.0 V are among the brightest stars known in their spectral subtype.
Conclusions. This collection of low-resolution spectroscopic data serves as a
candidate target list for the CARMENES survey and can be highly valuable for
other radial-velocity surveys of M dwarfs and for studies of cool dwarfs in the
solar neighbourhood.Comment: A&A, in pres
Contractions from $osp(1|32) \oplus osp(1|32)$ to the M-theory
  superalgebra extended by additional fermionic generators

We study here the generalized Weimar-Woods contractions of the superalgebra
$osp(1|32) \oplus osp(1|32)$ in order to obtain a suitable algebra that could
describe the gauge group of $D=11$ supergravity. The contracted superalgebras
are assumed to be given in terms of fermionic extensions of the M-theory
superalgebra. We show that the only superalgebra of this type obtained by
contraction is the only one for which the three-form of $D=11$ supergravity
cannot be trivialized. Therefore, $D=11$ supergravity cannot be connected in
this way with a contraction of $osp(1|32) \oplus osp(1|32)$
Tuning the bulk properties of bidisperse granular mixtures by small
  amount of fines

We study the bulk properties of isotropic bidisperse granular mixtures using
discrete element simulations. The focus is on the influence of the size
(radius) ratio of the two constituents and volume fraction on the mixture
properties. We show that the effective bulk modulus of a dense granular (base)
assembly can be enhanced by up to 20% by substituting as little as 5% of its
volume with smaller sized particles. Particles of similar sizes barely affect
the macroscopic properties of the mixture. On the other extreme, when a huge
number of fine particles are included, most of them lie in the voids of the
base material, acting as rattlers, leading to an overall weakening effect. In
between the limits, an optimum size ratio that maximizes the bulk modulus of
the mixture is found. For loose systems, the bulk modulus decreases
monotonically with addition of fines regardless of the size ratio. Finally, we
relate the mixture properties to the 'typical' pore size in a disordered
structure as induced by the combined effect of operating volume fraction
(consolidation) and size ratio
Relighting the Fire: Visualizing the Lesbian in Contemporary India

This article revisits the controversy surrounding Deepa Mehta’s Fire (1996), India’s first publicly-released film depicting female same-sex desire. The film has become a touchstone for discussions of the representation of queer and LGBT lives in India. While the majority of critical accounts of the film have rejected the use of “lesbian” on the basis of its Anglo-American specificity, this article seeks to recast lesbians at the heart of Fire by filtering them through the lens of transnational protest, and by offering a close reading of the film’s own play on religious and cultural symbolism. Viewed almost two decades after its release, in the light of the Delhi rape case of December 2012 and subsequent events, including the upholding of a law criminalizing gay sex in November 2013, the film now more than ever seems to offer a fantasy of the future, rather than a viable reality in the present day. Within Fire, the circumnavigation of heteronormative power and desire is certainly queer, but the film's labelling as “lesbian” subsequent to its release in India opened up an important public forum for a debate about female desire and independence that continues to resonate today. This article does not attempt to offer a conclusive argument about the use of the term “lesbian” to label the relationship between women that is depicted within the film, but it does examine the way in which the film itself visualizes desire between women, and in particular the use of Hindu narratives, imagery and motifs. The film’s interpellation into lesbian politics is facilitated by the strong emphasis on a female-centred desire that is not defined by motherhood, that cannot be contained, and that demands to be seen
Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at $\sqrt{s}$ = 7 TeV

A search for resonances produced in 7 TeV proton-proton collisions and decaying into top-quark pairs is described. In this Letter events where the top-quark decay produces two massive jets with large transverse momenta recorded with the ATLAS detector at the Large Hadron Collider are considered. Two techniques that rely on jet substructure are used to separate top-quark jets from those arising from light quarks and gluons. In addition, each massive jet is required to have evidence of an associated bottom-quark decay. The data are consistent with the Standard Model, and limits can be set on the production cross section times branching fraction of a Z' boson and a Kaluza-Klein gluon resonance. These limits exclude, at the 95% credibility level, Z' bosons with masses 0.70-1.00 TeV as well as 1.28-1.32 TeV and Kaluza-Klein gluons with masses 0.70-1.62 TeV
Renegotiation-Proof Climate Agreements with Full Participation: Conditions for Pareto-Efficiency

Recent contributions show that climate agreements with broad participation can be implemented as weakly renegotiation-proof equilibria in simple models of greenhouse gas abatement where each country has a binary choice between cooperating (i.e., abate emissions) or defecting (no abatement). Here we show that this result carries over to a model where countries have a continuum of emission choices. Indeed, a Pareto-efficient climate agreement can always be implemented as a weakly renegotiation-proof equilibrium, for a sufficiently high discount factor. This means that one need not trade-off a  narrow but deep  treaty with a  broad but shallow  treaty.<br><br>
The final publication is available at link.springer.co
The high bone mass phenotype is characterised by a combined cortical and trabecular\ud
bone phenotype: Findings from a pQCT case–control study

High bone mass (HBM), detected in 0.2% of DXA scans, is characterised by a mild skeletal dysplasia largely\ud
unexplained by known genetic mutations. We conducted the first systematic assessment of the skeletal phenotype\ud
in unexplained HBM using pQCT in our unique HBM population identified from screening routine UK\ud
NHS DXA scans.\ud
pQCT measurements from the mid and distal tibia and radius in 98 HBM cases were compared with (i) 65\ud
family controls (constituting unaffected relatives and spouses), and (ii) 692 general population controls.\ud
HBM cases had substantially greater trabecular density at the distal tibia (340 [320, 359] mg/cm3), compared\ud
to both family (294 [276, 312]) and population controls (290 [281, 299]) (pb0.001 for both, adjusted for age,\ud
gender, weight, height, alcohol, smoking, malignancy, menopause, steroid and estrogen replacement use).\ud
Similar results were obtained at the distal radius. Greater cortical bone mineral density (cBMD) was observed\ud
in HBM cases, both at the midtibia and radius (adjusted pb0.001). Total bone area (TBA) was higher in HBM\ud
cases, at the distal and mid tibia and radius (adjusted pb0.05 versus family controls), suggesting greater periosteal\ud
apposition. Cortical thickness was increased at the mid tibia and radius (adjusted pb0.001), implying\ud
reduced endosteal expansion. Together, these changes resulted in greater predicted cortical strength\ud
(strength strain index [SSI]) in both tibia and radius (pb0.001).We then examined relationships with age; tibial\ud
cBMD remained constant with increasing age amongst HBM cases (adjusted β −0.01 [−0.02, 0.01], p=0.41),\ud
but declined in family controls (−0.05 [−0.03, −0.07], pb0.001) interaction p=0.002; age-related changes\ud
in tibial trabecular BMD, CBA and SSI were also divergent. In contrast, at the radius HBM cases and controls\ud
showed parallel age-related declines in cBMD and trabecular BMD.\ud
HBM is characterised by increased trabecular BMD and by alterations in cortical bone density and structure,\ud
leading to substantial increments in predicted cortical bone strength. In contrast to the radius, neither trabecular\ud
nor cortical BMD declined with age in the tibia of HBM cases, suggesting attenuation of age-related bone\ud
loss in weight-bearing limbs contributes to the observed bone phenotype
From mantle to critical zone : a review of large and giant sized deposits of the rare earth elements

MS, AF and FW acknowledge the support of the NERC SoS:RARE consortium grant (NE/M011267/1). D. Kavecsanszki acknowledges the support of a postgraduate fellowship from the College of Engineering, Mathematics and Physical Sciences at the University of Exeter.The rare earth elements are unusual when defining giant-sized ore deposits, as resources are often quoted as total rare earth oxide, but the importance of a deposit may be related to the grade for individual, or a limited group of, the elements. Taking the total REE resource, only one currently known deposit (Bayan Obo) would class as giant (>1.7×107 tonnes contained metal), but a range of others classify as large (>1.7×106 tonnes). With the exception of unclassified resource estimates from the Olympic Dam IOCG deposit, all of these deposits are related to alkaline igneous activity – either carbonatites or agpaitic nepheline syenites. The total resource in these deposits must relate to the scale of the primary igneous source, but the grade is a complex function of igneous source, magmatic crystallisation, hydrothermal modification and supergene enrichment during weathering. Isotopic data suggest that the sources conducive to the formation of large REE deposits are developed in subcontinental lithospheric mantle, enriched in trace elements either by plume activity, or by previous subduction. The reactivation of such enriched mantle domains in relatively restricted geographical areas may have played a role in the formation of some of the largest deposits (e.g. Bayan Obo). Hydrothermal activity involving fluids from magmatic to meteoric sources may result in the redistribution of the REE and increases in grade, depending on primary mineralogy and the availability of ligands. Weathering and supergene enrichment of carbonatite has played a role in the formation of the highest grade deposits at Mount Weld (Australia) and Tomtor (Russia). For the individual REE with the current highest economic value (Nd and the HREE), the boundaries for the large and giant size classes are 2 orders of magnitude lower, and deposits enriched in these metals (agpaitic systems, ion absorption deposits) may have significant economic impact in the near future.Publisher PDFPeer reviewe
Anti-de-Sitter regular electric multipoles: Towards Einstein-Maxwell-AdS solitons

We discuss electrostatics in Anti-de-Sitter (AdS) spacetime, in global coordinates. We observe that the multipolar expansion has two crucial differences to that in Minkowski spacetime. First, there are everywhere regular solutions, with finite energy, for every multipole moment exceptfor the monopole. Second, all multipole moments decay with the same inverse power of the areal radius, 1/r, as spatial infinity is approached. The first observation suggests there may be regular, self-gravitating, EinsteinMaxwell solitons in AdSspacetime. The second observation, renders a Lichnerowicz-type no-soliton theorem inapplicable. Consequently, we suggest Einstein-Maxwell solitons exist in AdS, and we support this claim by computing the first order metric perturbations sourced by test electric field multipoles, which are obtained analytically in closed form
The Intestinal Microbiota Contributes to the Ability of Helminths to Modulate Allergic Inflammation.

Intestinal helminths are potent regulators of their host's immune system and can ameliorate inflammatory diseases such as allergic asthma. In the present study we have assessed whether this anti-inflammatory activity was purely intrinsic to helminths, or whether it also involved crosstalk with the local microbiota. We report that chronic infection with the murine helminth Heligmosomoides polygyrus bakeri (Hpb) altered the intestinal habitat, allowing increased short chain fatty acid (SCFA) production. Transfer of the Hpb-modified microbiota alone was sufficient to mediate protection against allergic asthma. The helminth-induced anti-inflammatory cytokine secretion and regulatory T cell suppressor activity that mediated the protection required the G protein-coupled receptor (GPR)-41. A similar alteration in the metabolic potential of intestinal bacterial communities was observed with diverse parasitic and host species, suggesting that this represents an evolutionary conserved mechanism of host-microbe-helminth interactions
Multiwavelength optical observations of chromospherically active binary systems - V. FF UMa (2RE J0933+624): a system with orbital period variation

Context. This is the fifth paper in a series aimed at studying the chromospheres of active binary systems using several optical spectroscopic indicators to obtain or improve orbital solution and fundamental stellar parameters. Aims. We present here the study of FF UMa ( 2RE J0933+ 624), a recently discovered, X- ray/ EUV selected, active binary with strong Hα emission. The objectives of this work are, to find orbital solutions and define stellar parameters from precise radial velocities and carry out an extensive study of the optical indicators of chromospheric activity. Methods. We obtained high resolution echelle spectroscopic observations during five observing runs from 1998 to 2004. We found radial velocities by cross correlation with radial velocity standard stars to achieve the best orbital solution. We also measured rotational velocity by cross- correlation techniques and have studied the kinematic by galactic space- velocity components ( U, V, W) and Eggen criteria. Finally, we have determined the chromospheric contribution in optical spectroscopic indicators, from Ca II H & K to Ca II IRT lines, using the spectral subtraction technique. Results. We have found that this system presents an orbital period variation, higher than previously detected in other RS CVn systems. We determined an improved orbital solution, finding a circular orbit with a period of 3.274 days. We derived the stellar parameters, confirming the subgiant nature of the primary component (M_P = 1.67 M_[circled dot] and R sin i_P = 2.17 R_[circled dot]) and obtained rotational velocities (v sin i), of 33.57 +/- 0.45 km s^-1 and 32.38 +/- 0.75 km s^-1 for the primary and secondary components respectively. From our kinematic study, we can deduce its membership to the Castor moving group. Finally, the activity study has given us a better understanding of the possible mechanisms that produce the orbital period variation
A multipopulation parallel genetic simulated annealing based QoS routing and wavelength assignment integration algorithm for multicast in optical networks

Copyright @ 2008 Elsevier B.V. All rights reserved.In this paper, we propose an integrated Quality of Service (QoS) routing algorithm for optical networks. Given a QoS multicast request and the delay interval specified by users, the proposed algorithm can find a flexible-QoS-based cost suboptimal routing tree. The algorithm first constructs the multicast tree based on the multipopulation parallel genetic simulated annealing algorithm, and then assigns wavelengths to the tree based on the wavelength graph. In the algorithm, routing and wavelength assignment are integrated into a single process. For routing, the objective is to find a cost suboptimal multicast tree. For wavelength assignment, the objective is to minimize the delay of the multicast tree, which is achieved by minimizing the number of wavelength conversion. Thus both the cost of multicast tree and the user QoS satisfaction degree can approach the optimal. Our algorithm also considers load balance. Simulation results show that the proposed algorithm is feasible and effective. We also discuss the practical realization mechanisms of the algorithm.This work was supported in part by the Engineering and Physical Sciences Research Council (EPSRC) of UK under Grant EP/E060722/1, the National Natural Science Foundation of China under Grant nos. 60673159 and 70671020, the National High-Tech Research and Development Plan of China under Grant no. 2006AA01Z214, Program for New Century Excellent Talents in University, and the Key Project of Chinese Ministry of Education under Grant no. 108040
On the use of the Hs estimator for the experimental assessment of transmissibility matrices

The experimental estimation of frequency response functions characterizing SISO linear systems is a well established topic. Several estimators are defined in the literature, each estimator being optimal depending upon the assumptions with respect to the balance of noise between the input and output of the system. H1 and H2 have to be used in case of presence of noise on output and input, respectively. The HV or Hs estimator is chosen if input and output are assumed to have equivalent SNR. These estimators are also established for MIMO linear systems, with additional difficulties due to the necessity of inversing cross spectral matrices. A transmissibility function is generally defined as a linear relationship between two outputs of a linear system. For MIMO systems, transmissibilities are not defined by the system only, it also depends on the input quantities. It is however possible to define a transmissibility matrix between two sets of outputs that is, under some assumptions, uniquely defined. This approach is especially the base of Operational Transfer Path analysis, an engineering method benefiting of a strong research effort in the last few years. This paper deals with the use of the application of MIMO system estimators to the experimental assessment of transmissibility matrices. Transmissibility matrices are generally estimated using a H1 like approach in the literature. The possibility of using H2 and Hs is presented in this work, from the theoretical point of view and with numerical and practical illustrations.status: publishe
Broken planar Skyrmions — statics and dynamics

The broken planar Skyrme model is a theory that breaks global O (3) symmetry to the dihedral group D N . It has been shown that the single soliton solution is formed of N constituent parts, named partons, that are topologically confined. The multisoliton solutions have already been computed for N  = 3 and were shown to be related to polyiamonds. We extend this for larger N and demonstrate that this polyform structure continues (planar figures formed by regular N -gons joined along their edges, of which polyiamonds are the N  = 3 subset). Furthermore, we numerically simulate the dynamics of this model for the first time. It will be demonstrated that the time dependent behaviour of these solutions can be broken down into the interactions of its constituent partons, with certain collisions exhibiting parton exchange. The results are then compared with those of the standard planar Skyrme model
The 3-loop non-singlet heavy flavor contributions and anomalous dimensions for the structure function F2(x,Q2) and transversity

We calculate the massive flavor non-singlet Wilson coefficient for the heavy flavor contributions to the structure function F2(x,Q2) in the asymptotic region Q2≫m2 and the associated operator matrix element Aqq,Q(3),NS(N) to 3-loop order in Quantum Chromodynamics at general values of the Mellin variable N . This matrix element is associated with the vector current and axial vector current for the even and the odd moments N , respectively. We also calculate the corresponding operator matrix elements for transversity, compute the contributions to the 3-loop anomalous dimensions to O(NF) and compare to results in the literature. The 3-loop matching of the flavor non-singlet distribution in the variable flavor number scheme is derived. All results can be expressed in terms of nested harmonic sums in N space and harmonic polylogarithms in x -space. Numerical results are presented for the non-singlet charm quark contribution to F2(x,Q2)