pinecone/core-2020-05-10-deduplication huggingface dataset:
Resolving the gap and AU-scale asymmetries in pre-transitional disks of V1247 ORIONIS

adsurl: http://adsabs.harvard.edu/abs/2013prpl.conf2B051K adsnote: Provided by the SAO/NASA Astrophysics Data SystemPre-transitional disks are protoplanetary disks with a gapped disk structure, potentially indicating the presence of
young planets in these systems. In order to explore the structure of these objects and their gap-opening mechanism,
we observed the pre-transitional disk V1247 Orionis using the Very Large Telescope Interferometer, the Keck
Interferometer, Keck-II, Gemini South, and IRTF. This allows us to spatially resolve the AU-scale disk structure
from near- to mid-infrared wavelengths (1.5–13µm), tracing material at different temperatures and over a wide
range of stellocentric radii. Our observations reveal a narrow, optically thick inner-disk component (located at
0.18 AU from the star) that is separated from the optically thick outer disk (radii !46 AU), providing unambiguous
evidence for the existence of a gap in this pre-transitional disk. Surprisingly, we find that the gap region is filled
with significant amounts of optically thin material with a carbon-dominated dust mineralogy. The presence of this
optically thin gap material cannot be deduced solely from the spectral energy distribution, yet it is the dominant
contributor at mid-infrared wavelengths. Furthermore, using Keck/NIRC2 aperture masking observations in the
H, K′
, and L′ bands, we detect asymmetries in the brightness distribution on scales of ∼15–40 AU, i.e., within
the gap region. The detected asymmetries are highly significant, yet their amplitude and direction changes with
wavelength, which is not consistent with a companion interpretation but indicates an inhomogeneous distribution
of the gap material. We interpret this as strong evidence for the presence of complex density structures, possibly
reflecting the dynamical interaction of the disk material with sub-stellar mass bodies that are responsible for the
gap clearing.NASA through the Sagan Fellowship ProgramW. M. Keck FoundationAerospace Corporation’s Independent Research and Development (IR&D) programNASA AD
High p(t) measurements at the CERN SPS

The current experimental situation concerning high pt observables at the CERN SPS is reviewed. Recent data from the NA45, NA49 and NA57 collaborations are discussed and compared to earlier measurements by WA98 and NA45 at the same center-of-mass energies, as well as to measurements at the higher energies by the RHIC experiments. The observables include new p+p, A+A spectra, nuclear modification factors (R_AA, R_CP), two particle azimuthal correlations, and baryon to meson ratios at moderately high pt. Generally, the interpretation of the SPS data suffers from the lack of reliable baseline measurements (p+p and p+A). However, the overall picture that is emerging suggests that already at SPS energies medium effects similar to those observed at RHIC are present.The current experimental situation concerning high p t observables at the CERN SPS is reviewed. Recent data from the NA45, NA49 and NA57 collaborations are discussed and compared to earlier measurements by WA98 and NA45 at the same center-of-mass energies, as well as to measurements at the higher energies by the RHIC experiments. The observables include new p+p, A+A spectra, nuclear modification factors ( R AA , R CP ), two particle azimuthal correlations, and baryon to meson ratios at moderately high p t . Generally, the interpretation of the SPS data suffers from the lack of reliable baseline measurements (p+p and p+A). However, the overall picture that is emerging suggests that already at SPS energies medium effects similar to those observed at RHIC are present
On the continuity of the commutative limit of the 4d N=4 non-commutative super Yang-Mills theory

We study the commutative limit of the non-commutative maximally supersymmetric Yang-Mills theory in four dimensions (N=4SYM), where non-commutativity is introduced in the two spacelike directions. The commutative limits of non-commutative spaces are important in particular in the applications of non-commutative spaces for regularisation of supersymmetric theories (such as the use of non-commutative spaces as alternatives to lattices for supersymmetric gauge theories and interpretations of some matrix models as regularised supermembrane or superstring theories), which in turn can play a prominent role in the study of quantum gravity via the gauge/gravity duality. In general, the commutative limits are known to be singular and non-smooth due to UV/IR mixing effects. We give a direct proof that UV effects do not break the continuity of the commutative limit of the non-commutative N=4SYM to all order in perturbation theory, including non-planar contributions. This is achieved by establishing the uniform convergence (with respect to the non-commutative parameter) of momentum integrals associated with all Feynman diagrams appearing in the theory, using the same tools involved in the proof of finiteness of the commutative N=4SYM
A search for high-mass resonances decaying to τ+τ− in pp collisions at root s =8 TeV with the ATLAS detector

Çetin, Serkant Ali (Dogus Author)A search for high-mass resonances decaying into τ+τ− final states using proton-proton collisions at s=8$$ \sqrt{s}=8 $$ TeV produced by the Large Hadron Collider is presented. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 19.5–20.3 fb−1. No statistically significant excess above the Standard Model expectation is observed; 95% credibility upper limits are set on the cross section times branching fraction of Z′ resonances decaying into τ+τ− pairs as a function of the resonance mass. As a result, Z′ bosons of the Sequential Standard Model with masses less than 2.02 TeV are excluded at 95% credibility. The impact of the fermionic couplings on the Z′ acceptance is investigated and limits are also placed on a Z′ model that exhibits enhanced couplings to third-generation fermions
Overcoming mass-transfer limitations in partial hydrogenation of soybean oil using metal decorated polymeric membranes

The conventional soybean oil hydrogenation process (metal catalyst on solid support particles slurried in oil, H2 bubbled through the oil) is compared to metal-decorated integral-asymmetric polyetherimide (PEI) membranes, as far as changes in temperature and pressure are concerned.  Using metal decorated-polymeric membranes, H2 is supplied to the catalytic sites by permeation from the membrane substructure.  As opposed to the slurry process, metal-decorated membranes show only slightly increased trans fatty acid (TFA) formation when the temperature is raised (50-90°C) to accelerate the process.  This is likely due to the efficient and to some extent self-regulating H2 supply directly to the catalytic sites on the membrane skin.  The hydrogenation rate and TFA formation of the metal decorated membrane process show a minor dependence on pressure
Discrimination of speech sounds by children with dyslexia: comparisons with chronological age and reading level controls.

International audiencePrevious studies have shown that children suffering from developmental dyslexia have a deficit in categorical perception of speech sounds. The aim of the current study was to better understand the nature of this categorical perception deficit. In this study, categorical perception skills of children with dyslexia were compared with those of chronological age and reading level controls. Children identified and discriminated /do-to/ syllables along a voice onset time (VOT) continuum. Results showed that children with dyslexia discriminated among phonemically contrastive pairs less accurately than did chronological age and reading level controls and also showed higher sensitivity in the discrimination of allophonic contrasts. These results suggest that children with dyslexia perceive speech with allophonic units rather than phonemic units. The origin of allophonic perception in the course of perceptual development and its implication for reading acquisition are discussed
On the Existence of Quasipattern Solutions of the Swift–Hohenberg Equation

International audienceQuasipatterns (two-dimensional patterns that are quasiperiodic in any spatial direction) remain one of the outstanding problems of pattern formation. As with problems involving quasiperiodicity, there is a small divisor problem. In this paper, we consider 8-fold, 10-fold, 12-fold, and higher order quasipattern solutions of the Swift–Hohenberg equation. We prove that a formal solution, given by a divergent series, may be used to build a smooth quasiperiodic function which is an approximate solution of the pattern-forming PDE up to an exponentially small error
Mackey functions, induction from restriction functors and coinduction from transfer functors

Cataloged from PDF version of article.Boltje's plus constructions extend two well-known constructions on Mackey functors, the fixed-point functor and the fixed-quotient functor. In this paper, we show that the plus constructions are induction and coinduction functors of general module theory. As an application, we construct simple Mackey functors from simple restriction functors and simple transfer functors. We also give new proofs for the classification theorem for simple Mackey functors and semisimplicity theorem of Mackey functors. © 2007 Elsevier Inc. All rights reserved
Measurement of transverse momentum relative to dijet systems in PbPb and pp collisions at sqrt(s_NN) = 2.76 TeV

An analysis of dijet events in PbPb and pp collisions is performed to explore the properties of energy loss by partons traveling in a quark-gluon plasma. Data are collected at a nucleon-nucleon center-of-mass energy of 2.76 TeV at the LHC. The distribution of transverse momentum (p T) surrounding dijet systems is measured by selecting charged particles in different ranges of p T and at different angular cones of pseudorapidity and azimuth. The measurement is performed as a function of centrality of the PbPb collisions, the p T asymmetry of the jets in the dijet pair, and the distance parameter R used in the anti-k T jet clustering algorithm. In events with unbalanced dijets, PbPb collisions show an enhanced multiplicity in the hemisphere of the subleading jet, with the p T imbalance compensated by an excess of low-p T particles at large angles from the jet axes
An evaluation of the seizure process for pure titanium by a draw bending method

In order to evaluate the seizure of pressing process, we adopted a draw bending method to use pure titanium sheets of 1.0mm 
	 in thickness (JIS TP340, ASTM Grade2). The draw bending method was simulated under the conditions of die wall for pressing 
	 the glasses frame. The titanium sheet was dragged into the clearance between upper punch and die by the descent motion of the 
	 upper punch. The seizure occurred at the shoulder part and side wall part of the die. The working conditions changed within the 
	 bending radius of die, the lubricating condition and punch speed. The surface roughness of titanium sheets and die surface were 
	 measured by the surface measuring instrument using PGI (Phase Grating Interferometry )  system (Taylor Hobson Form Talysurf 
	 1200). The surface roughness and the punch load increased intensely within a 10mm of sliding distance under the non-lubricant 
	 condition, and increased gradually within a range of 10 to 50mm in every die radius. The load of draw bending process was 
	 related to the variation of surface roughness. The seizure of the pressing process, occurring between surfaces of specimen and 
	 die, was estimated by measuring the arithmetic mean roughness.11th International Conference on Technology of Plasticity, ICTP 2014, 19-24 October 2014, Nagoya Congress Center, Nagoya, Japa
Measurement of the centrality dependence of J/psi yields and observation of Z production in lead-lead collisions with the ATLAS detector at the LHC

Using the ATLAS detector, a centrality-dependent suppression has been observed in the yield of J/psi mesons produced in the collisions of lead ions at the Large Hadron Collider. In a sample of minimum-bias lead-lead collisions at a nucleon-nucleon centre of mass energy root s(NN) = 2.76 TeV, corresponding to an integrated luminosity of about 6.7 μb(-1), J/psi mesons are reconstructed via their decays to mu(+)mu(-) pairs. The measured J/psi yield, normalized to the number of binary nucleon-nucleon collisions, is found to significantly decrease from peripheral to central collisions. The centrality dependence is found to be qualitatively similar to the trends observed at previous, lower energy experiments. The same sample is used to reconstruct Z bosons in the mu(+)mu(-) final state, and a total of 38 candidates are selected in the mass window of 66 to 116 GeV. The relative Z yields as a function of centrality are also presented, although no conclusion can be inferred about their scaling with the number of binary collisions, because of limited statistics. This analysis provides the first results on J/psi and Z production in lead-lead collisions at the LHC
Search for anomalous production of prompt like-sign lepton pairs at s√=7TeV with the ATLAS detector

An inclusive search for anomalous production of two prompt, isolated leptons with the same electric charge is presented. The search is performed in a data sample corresponding to 4.7 fb(-1) of integrated luminosity collected in 2011 at root s = 7TeV with the ATLAS detector at the LHC. Pairs of leptons (e(+/-)e(+/-), e(+/-)mu(+/-), and mu(+/-)mu(+/-)) with large transverse momentum are selected, and the dilepton invariant mass distribution is examined for any deviation from the Standard Model expectation. No excess is found, and upper limits on the production cross section of like-sign lepton pairs from physics processes beyond the Standard Model are placed as a function of the dilepton invariant mass within a fiducial region close to the experimental selection criteria. The 95% confidence level upper limits on the cross section of anomalous e(+/-)e(+/-), e(+/-)mu(+/-), or mu(+/-)mu(+/-) production range between 1.7 fb and 64 fb depending on the dilepton mass and flavour combination
On the market value of information commodities. III. Demand price

The derived‐demand price of an information commodity depends on the commodity's cost impact on a user's production process. We model an arbitrary production process as a collection of interrelated tasks which can be represented in the form of a production digraph. The nodes of the digraph represent the subtasks in the production process. A directed edge from node a to node b signifies that the subtask corresponding to node b, in order to perform its function, requires input from the subtask corresponding to node a. Appropriate weights, representing costs, are assigned to nodes and arcs. The production digraph allows for investigating cost reduction possibilities. To reduce production costs we have to lower subtask‐costs, or lower the total by restructuring. The trick is to determine which subtasks to choose as reduction candidates, or to discover how to restructure the production process so as to reduce the costs. The digraph model is used, in particular, to estimate the maximum price a user should be willing to pay for an information commodity. If a producer could, by introducing some information commodity, lower production costs by x dollars, the user may be willing to pay as much as x dollars for the commodity
The panchromatic spectroscopic evolution of the classical CO nova V339 Delphini (Nova Del 2013) until X-ray turnoff

Context. Classical novae are the product of thermonuclear runaway-initiated explosions occurring on accreting white dwarfs. Aims. V339 Del (Nova Delphinus 2013) was one of the brightest classical novae of the last hundred years. Spectroscopy and photometry are available from γ-rays through infrared at stages that have frequently not been observed well. The complete data set is intended to provide a benchmark for comparison with modeling and for understanding more sparsely monitored historical classical and recurrent novae. This paper is the first in the series of reports on the development of the nova. We report here on the early stages of the outburst, through the X-ray active stage. Methods. A time sequence of optical, flux calibrated high resolution spectra was obtained with the Nordic Optical Telescope (NOT) using FIES simultaneously, or contemporaneously, with the Space Telescope Imaging Spectrograph (STIS) aboard the Hubble Space Telescope during the early stages of the outburst. These were supplemented with Mercator/HERMES optical spectra. High resolution IUE ultraviolet spectra of OS And 1986, taken during the Fe curtain phase, served as a template for the distance determination. We used standard plasma diagnostics (e.g., [O III] and [N II] line ratios, and the Hβ line flux) to constrain electron densities and temperatures of the ejecta. Using Monte Carlo modeling of the ejecta, we derived the structure, filling factor, and mass from comparisons of the optical and ultraviolet line profiles. Results. We derive an extinction of E(B - V) = 0.23 ± 0.05 from the spectral energy distribution, the interstellar absorption, and H I emission lines. The distance, about 4-4.5 kpc, is in agreement with the inferred distance from near infrared interferometry. The maximum velocity was about 2500 km s-1, measured from the UV resonance and optical profiles. The ejecta showed considerable fine structure in all transitions, much of which persisted as emission knots. The line profiles were modeled using a bipolar conical structure for the ejecta within a relatively restricted range of parameters. For V339 Del, we find that an inclination to the line of sight of about 35°-55°, an opening angle of 60°-80°, and an inner radius ΔR/R(t) ≈ 0.3 based on vrad,max matches the permitted and intercombination lines. The filling factor is f ≈ 0.1, and the derived range in the ejecta mass is (2-3) × 10-5M⊙.Peer-reviewedPublisher Versio
The value of the follow-through derives from motor learning depending on future actions

In ball sports, we are taught to follow through, despite the
inability of events after contact or release to influence the
outcome. Here we show that the specific motor memory
active at any given moment critically depends on the movement
that will be made in the near future. We demonstrate
that associating a different follow-through movement with
two motor skills that normally interfere allows them
to be learned simultaneously, suggesting that distinct future
actions activate separate motor memories. This implies that
when learning a skill, a variable follow-through would activate
multiple motor memories across practice, whereas a
consistent follow-through would activate a single motor
memory, resulting in faster learning. We confirm this prediction
and show that such follow-through effects influence
adaptation over time periods associated with real-world skill
learning. Overall, our results indicate that movements made
in the immediate future influence the current active motor
memory. This suggests that there is a critical time period
both before and after the current movement that determines
motor memory activation and controls learning.This is the final published version. The article was originally published in Current Biology, Volume 25, Issue 3, p397–401, 2 February 2015, DOI: 10.1016/j.cub.2014.12.03
Measurement of the inelastic pp cross-section at a centre-of-mass energy of √s = 7 TeV

The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum p [subscript T] > 0.2GeV/c in the pseudorapidity range 2.0 < η < 4.5, is measured by the LHCb experiment at a centre-of-mass energy of √s = 7 TeV. The cross-section in this kinematic range is determined to be σ [acc over inel] = 55.0 ± 2.4 mb with an experimental uncertainty that is dominated by systematic contributions. Extrapolation to the full phase space, using Pythia 6, yields σ [subscript inel] = 66.9 ± 2.9 ± 4.4 mb, where the first uncertainty is experimental and the second is due to the extrapolation.National Science Foundation (U.S.
Measurement of the forward Z boson production cross-section in pp collisions at $\sqrt{s} = 13$ TeV

A measurement of the production cross-section of Z bosons in pp collisions at $\sqrt{s} = 13$ TeV is presented using dimuon and dielectron final states in LHCb data. The cross-section is measured for leptons with pseudorapidities in the range $2.0 \eta 4.5$, transverse momenta $p_\text{T} 20$ GeV and dilepton invariant mass in the range $60 m(\ell\ell) 120$ GeV. The integrated cross-section from averaging the two final states is \begin{equation*}\sigma_{\text{Z}}^{\ell\ell} = 194.3 \pm 0.9 \pm 3.3 \pm 7.6\text{ pb,}\end{equation*} where the first uncertainty is statistical, the second is due to systematic effects, and the third is due to the luminosity determination. In addition, differential cross-sections are measured as functions of the Z boson rapidity, transverse momentum and the angular variable $\phi^*_\eta$
Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at $\sqrt{s}$ = 8 TeV

Results are reported from a search for the top squark $\tilde{t}_{1}$, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb$^{−1}$ of proton-proton collisions at $\sqrt{s}$ = 8 TeV collected with the CMS detector at the LHC. The search targets  $\tilde{t}_{1} → b\tilde{x}^{±}_{1}$ and $\tilde{t}_{1} → t^{(*)}\tilde{x}^{0}_{1}$ decay modes, where $\tilde{x}^{±}_{1}$ and $\tilde{x}^{0}_{1}$ are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, missing transverse energy, and either one or two leptons. Leading back- grounds are determined from data. No significant excess in data is observed above the expectation from standard model processes. The results exclude a region of the 00 two-dimensional plane of possible  $\tilde{t}_{1}$ and $\tilde{x}^{0}_{1}$ masses. The highest excluded $\tilde{t}_{1}$ and $\tilde{x}^{0}_{1}$ masses are about 700 GeV and 250 GeV, respectively