pinecone/core-2020-05-10-deduplication huggingface dataset:
Hermitian Interpolation Subject to Uncertainties

The book was dedicated to Professor P. Neittaanmaki on His 60th BirthdayInternational audienceThis contribution is a sequel of the report [1]. In PDE-constrained global optimization (e.g., [3]), iterative algorithms are commonly efficiently accelerated by techniques relying on approximate evaluations of the functional to be minimized by an economical but lower-fidelity model ("meta-model"), in a so-called "Design of Experiment" (DoE) [6]. Various types of meta-models exist (interpolation polynomials, neural networks, Kriging models, etc.). Such meta-models are constructed by pre-calculation of a database of functional values by the costly high-fidelity model. In adjoint-based numerical methods, derivatives of the functional are also available at the same cost, although usually with poorer accuracy. Thus, a question arises: should the derivative information, available but known to be less accurate, be used to construct the meta-model or be ignored? As the first step to investigate this issue, we consider the case of the Hermitian interpolation of a function of a single variable, when the function values are known exactly, and the derivatives only approximately, assuming a uniform upper bound ε on this approximation is known. The classical notion of best approximation is revisited in this context, and a criterion is introduced to define the best set of interpolation points. This set is identified by either analytical or numerical means. If n+1 is the number of interpolation points, it is advantageous to account for the derivative information when ε -> ε_0, where ε_0 decreases with n, and this is in favor of piecewise, low-degree Hermitian interpolants. In all our numerical tests, we have found that the distribution of Chebyshev points is always close to optimal, and provides bounded approximants with close-to-least sensitivity to the uncertainties
The lipid-lowering effects of lomitapide are unaffected by adjunctive apheresis in patients with homozygous familial hypercholesterolaemia - A post-hoc analysis of a Phase 3, single-arm, open-label trial

Objectives: Lomitapide (a microsomal triglyceride transfer protein inhibitor) is an adjunctive treatment for homozygous familial hypercholesterolaemia (HoFH), a rare genetic condition characterised by elevated low-density lipoprotein-cholesterol (LDL-C), and premature, severe, accelerated atherosclerosis. Standard of care for HoFH includes lipid-lowering drugs and lipoprotein apheresis. We conducted a post-hoc analysis using data from a Phase 3 study to assess whether concomitant apheresis affected the lipid-lowering efficacy of lomitapide. Methods: Existing lipid-lowering therapy, including apheresis, was to remain stable from Week-6 to Week 26. Lomitapide dose was escalated on the basis of individual safety/tolerability from 5mg to 60mg a day (maximum). The primary endpoint was mean percent change in LDL-C from baseline to Week 26 (efficacy phase), after which patients remained on lomitapide through Week 78 for safety assessment and further evaluation of efficacy. During this latter period, apheresis could be adjusted. We analysed the impact of apheresis on LDL-C reductions in patients receiving lomitapide. Results: Of the 29 patients that entered the efficacy phase, 18 (62%) were receiving apheresis at baseline. Twenty-three patients (13 receiving apheresis) completed the Week 26 evaluation. Of the six patients who discontinued in the first 26 weeks, five were receiving apheresis. There were no significant differences in percent change from baseline of LDL-C at Week 26 in patients treated (-48%) and not treated (-55%) with apheresis (p=0.545). Changes in Lp(a) levels were modest and not different between groups (p=0.436). Conclusion: The LDL-C lowering efficacy of lomitapide is unaffected by lipoprotein apheresis
The R-matrix action of untwisted affine quantum groups at roots of 1

Let \hat{g} be an untwisted affine Kac–Moody algebra. The quantum group U_q(\hat{g}) is known to be a quasitriangular Hopf algebra (to be precise, a braided Hopf algebra). Here we prove that its unrestricted specializations at odd roots of 1 are braided too: in particular, specializing q at 1 we have that the function algebra F_q[Ĥ] of the Poisson proalgebraic group Ĥ dual of Ĝ - a Kac–Moody group with Lie algebra \hat{g} - is braided. This in turn implies also that the action of the universal R-matrix on the tensor products of pairs of Verma modules can be specialized at odd roots of 1
Phosphorylation of silk fibroins improves the cytocompatibility of silk fibroin derived materials: a platform for the production of tuneable material

Silk fibroin demonstrates great biocompatibility and is suitable for many biomedical applications, including tissue engineering and regenerative medicine. Current research focuses on manipulating the physico-chemical properties of fibroin, and examining the effect of this manipulation on firobin's biocompatibility. Regenerated silk fibroin was modified by in vitro enzymatic phosphorylation and cast into films. Films were produced by blending, at several ratios, the phosphorylated and un-phosphorylated fibroin solutions. Fourier transform infra-red spectroscopy was used to determine the specific P–OH vibration peak, confirming the phosphorylation of the regenerated silk fibroin solution. Differential scanning calorimetry showed that phosphorylation altered the intra- and inter-molecular interactions. Further experiments demonstrated that phosphorylation can be used to tailor the hydrophylicity/hydrophobicity ratio as well as the crystalinity of silk fibroin films. Release profiling of a model drug was highly dependent on silk modification level. Cytotoxicity assays showed that exposure to lixiviates of phosphorylated films only slightly affected cellular metabolism and proliferation, although direct contact resulted in a strong direct correlation between phosphorylation level and cell proliferation. This new method for tuning silk biomaterials to obtain specific structural and biochemical features can be adapted for a wide range of applications. Phosphorylation of silk fibroins may be applied to improve the cytocompatibility of any silk-based device that is considered to be in contact with live animals or human tissues.The authors would like to acknowledge the support granted to the authors by European NOVO Project, contract no. FP7-HEALTH 2011-two-stage 278402
HERschel Observations of Edge-on Spirals (HEROES), II : tilted-ring modelling of the atomic gas disks

Context. Edge-on galaxies can off er important insight into galaxy evolution because they are the only systems where the distribution of the different components can be studied both radially and vertically. The HEROES project was designed to investigate the interplay between the gas, dust, stars, and dark matter (DM) in a sample of 7 massive edge-on spiral galaxies. 
Aims. In this second HEROES paper, we present an analysis of the atomic gas content of 6 out of 7 galaxies in our sample. The remaining galaxy was recently analysed according to the same strategy. The primary aim of this work is to constrain the surface density distribution, the rotation curve, and the geometry of the gas disks in a homogeneous way. In addition we identify peculiar features and signs of recent interactions. 
Methods. We have constructed detailed tilted-ring models of the atomic gas disks based on new GMRT 21-cm observations of NGC 973 and UGC 4277 and re-reduced archival H I data of NGC 5907, NGC 5529, IC 2531, and NGC 4217. Potential degeneracies between different models were resolved by requiring good agreement with the data in various representations of the data cubes. 
Results. From our modelling we find that all but one galaxy are warped along the major axis. In addition, we identify warps along the line of sight in three galaxies. A flaring gas layer is required to reproduce the data for only one galaxy, but (moderate) flares cannot be ruled out for the other galaxies either. A coplanar ring-like structure is detected outside the main disk of NGC4217, which we suggest could be the remnant of a recent minor merger event. We also find evidence of a radial inflow of 15 +/- 5 km s(-1) in the disk of NGC 5529, which might be related to the ongoing interaction with two nearby companions. For NGC 5907, the extended, asymmetric, and strongly warped outer regions of the H I disk also suggest a recent interaction. In contrast, the inner disks of these three galaxies (NGC 4217, NGC 5529, and NGC 5907) show regular behaviour and seem largely unaffected by the interactions. Our models further support earlier claims of prominent spiral arms in the disks of IC 2531 and NGC 5529. Finally, we detect a dwarf companion galaxy at a projected distance of 36 kpc from the centre of NGC 973
Measurement of the mass difference between top and anti-top quarks in pp collisions at √s = 7 TeV using the ATLAS detector

Artículo escrito por muchos autores, sólo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración y los autores que firman como pertenecientes a la UAMA measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb−1 data sample of proton–proton collisions at √ s = 7 TeV recorded with the ATLAS detector at the LHC, events consistent with tt production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields  Δm ≡ mt − mt = 0.67 ± 0.61 (stat) ± 0.41 (syst) GeV, consistent with CPT invarianceWe acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwid
Hamilton-connectivity of 3-domination critical graphs with α=δ+1≥5

A graph G is 3-domination critical if its domination number  γ  is 3 and the addition of any edge decreases  γ  by 1. Let G be a 3-domination critical graph with toughness more than one. It was proved G is Hamilton-connected for the cases α ≤ δ (Discrete Mathematics 271 (2003) 1-12) and α=δ+2 (European Journal of Combinatorics 23(2002) 777-784). In this paper, we show G is Hamilton-connected for the case α= δ+1≥5.Department of Logistics and Maritime StudiesAuthor name used in this publication: C. T. Ng2007-2008 > Academic research: refereed > Publication in refereed journalpreprint_postprin
Liquid Crystal Alignment on a-C:H Films by Nitrogen Plasma Beam Scanning

[[abstract]]AA(Department of Materials Science and Engineering, National Tsing Hua University, Hsin-Chu City, Taiwan), AB(Department of Materials Science and Engineering, National Tsing Hua University, Hsin-Chu City, Taiwan), AC(Department of Materials Science and Engineering, National Tsing Hua University, Hsin-Chu City, Taiwan), AD(Department of Materials Science and Engineering, National Tsing Hua University, Hsin-Chu City, Taiwan), AE(Mechanical Industry Research Laboratories, ITRI, Hsin-Chu City, Taiwan), AF(Mechanical Industry Research Laboratories, ITRI, Hsin-Chu City, Taiwan), AG(Mechanical Industry Research Laboratories, ITRI, Hsin-Chu City, Taiwan), AH(Department of Physics, National Tsing Hua University, Hsin-Chu City, Taiwan), AI(Department of Physics, National Tsing Hua University, Hsin-Chu City, Taiwan), AJ(Materials Research Laboratories, ITRI, Hsin-Chu City, Taiwan)[[fileno]]2010137010018[[department]]物理
Two formalisms of extended possibilistic logic programming with context-dependent fuzzy unification: A comparative description

Possibilistic logic is a logic of uncertainty where a certainty degree between 0 and 1, interpreted as a lower bound of a necessity measure, is attached to each classical formula. In this paper we present a comparative description of two models extending first order possibilistic logic so as to allow for fuzzy unification. The first formalism, called PLFC, is a general extension that allows clauses with fuzzy constants and fuzzily restricted quantifiers. The second formalism is an implication-based extension defined on top of Gödel infinitely-valued logic, capable of dealing with fuzzy constants. In this paper we compare these approaches, mainly their Horn-clause fragments, discussing their basic differences, specially in what regards their unification and automated deduction mechanisms
Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP

Electroweak measurements performed with data taken at the electron positron collider LEP at CERN from 1995 to 2000 are reported. The combined data set considered in this report corresponds to a total luminosity of about 3 fb(-1) collected by the four LEP experiments ALEPH, DELPHI, 13 and OPAL, at centre-of-mass energies ranging from 130 GeV to 209 GeV. Combining the published results of the four LEP experiments, the measurements include total and differential cross-sections in photon-pair, fermion-pair and four-fermion production, the latter resulting from both double-resonant WW and ZZ production as well as singly resonant production. Total and differential cross-sections are measured precisely, providing a stringent test of the Standard Model at centre-of-mass energies never explored before in electron positron collisions. Final-state interaction effects in four-fermion production, such as those arising from colour reconnection and Bose Einstein correlations between the two W decay systems arising in WW production, are searched for and upper limits on the strength of possible effects are obtained. The data are used to determine fundamental properties of the W boson and the electroweak theory. Among others, the mass and width of the W boson, m(w) and Gamma(w), the branching fraction of W decays to hadrons, B(W -> had), and the trilinear gauge-boson self-couplings g(1)(Z), K-gamma and lambda(gamma), are determined to be: m(w) = 80.376 +/- 0.033 GeV Gamma(w) = 2.195 +/- 0.083 GeV B(W -> had) = 67.41 +/- 0.27% g(1)(Z) = 0.984(-0.020)(+0.018) K-gamma ¿ 0.982 +/- 0.042 lambda(gamma) = 0.022 +/- 0.019
Coleman-Weinberg inflation in light of Planck

We revisit a single field inflationary model based on Coleman-Weinberg potentials. We show that in small field Coleman-Weinberg inflation, the observed amplitude of perturbations needs an extremely small quartic coupling of the inflaton, which might be a signature of radiative origin. However, the spectral index obtained in a standard cosmological scenario turns out to be outside the 2 sigma region of the Planck data. When a non-standard cosmological framework is invoked, such as brane-world cosmology in the Randall-Sundrum model, the spectral index can be made consistent with Planck data within 1 sigma, courtesy of the modification in the evolution of the Hubble parameter in such a scheme. We also show that the required inflaton quartic coupling as well as a phenomenologically viable B-L symmetry breaking together with a natural electroweak symmetry breaking can arise dynamically in a generalized B-L extension of the Standard Model where the full potential is assumed to vanish at a high scale
Prolonging in utero-like oxygenation after birth diminishes oxidative stress in the lung and brain of mice pups☆

BackgroundFetal-to-neonatal transition is associated with oxidative stress. In preterm infants, immaturity of the antioxidant system favours supplemental oxygen-derived morbidity and mortality.ObjectivesTo assess if prolonging in utero-like oxygenation during the fetal-to-neonatal transition limits oxidative stress in the lung and brain, improving postnatal adaptation of mice pups.Material and methodsInspiratory oxygen fraction (FiO2) in pregnant mice was reduced from 21% (room air) to 14% (hypoxia) 8–12 h prior to delivery and reset to 21% 6–8 h after birth. The control group was kept at 21% during the procedure. Reduced (GSH) and oxidized (GSSG) glutathione and its precursors [γ-glutamyl cysteine (γ-GC) and L-cysteine (CySH)] content and expression of several redox-sensitive genes were evaluated in newborn lung and brain tissue 1 (P1) and 7 (P7) days after birth.ResultsAs compared with control animals, the GSH/GSSG ratio was increased in the hypoxic group at P1 and P7 in the lung, and at P7 in the brain. In the hypoxic group a significant increase in the mRNA levels of NAD(P)H:quinone oxidoreductase 1 (noq1), Sulfiredoxin 1 (srnx1) and Glutathione Peroxidase 1 (gpx) was found in lung tissue at P1, as well as a significant increase in gpx in brain tissue at P7.ConclusionsDelaying the increase in tissue oxygenation to occur after birth reduces short-and-long-term oxidative stress in the lung. Similar yet more subtle effects were found in the brain. Apparently, the fetal-to-neonatal transition under hypoxic conditions appears to have protective qualities
Calibrating 30 Years of Experimental Research : A Meta-Analysis of the Atmospheric Effects of Music, Scent, and Color

Atmospheric in-store stimuli have been the subject of considerable empirical investigation for over 30 years. This research presents a meta-analysis of 66 studies and 135 effects (N = 15,621) calibrating the atmospheric effects of music, scent, and color on shopping outcomes. At an aggregate level, the results reveal that environments in which music or scent are present yield higher pleasure, satisfaction, and behavioral intention ratings when compared with environments in which such conditions are absent. Warm colors produce higher levels of arousal than cool colors, while cool colors produce higher levels of satisfaction than warm colors. The estimated average strength of these relationships ranged from small to medium. Effect sizes exhibited significant between-study variance, which can be partly explained by the moderators investigated. For instance, larger effect sizes were observed for the relationship between scent and pleasure in those samples with a higher (vs. lower) proportion of females. Data also indicated a tendency toward stronger music and scent effects in service settings as compared to retail settings. The results of this analysis, based on data aggregated across the research stream, offer retailers a guide to enhance customers? shopping experience through judicious use of in-store atmospheric stimuli.authorsversionPeer reviewe
Lengths of words in transformation semigroups generated by digraphs

The second and third authors were supported by the EPSRC grant EP/K033956/1.Given a simple digraph D on n vertices (with n≥2), there is a natural construction of a semigroup of transformations ⟨D⟩. For any edge (a, b) of D, let a→b be the idempotent of rank n−1 mapping a to b and fixing all vertices other than a; then, define ⟨D⟩ to be the semigroup generated by a→b for all (a,b)∈E(D). For α∈⟨D⟩, let ℓ(D,α) be the minimal length of a word in E(D) expressing α. It is well known that the semigroup Singn of all transformations of rank at most n−1 is generated by its idempotents of rank n−1. When D=Kn is the complete undirected graph, Howie and Iwahori, independently, obtained a formula to calculate ℓ(Kn,α), for any α∈⟨Kn⟩=Singn; however, no analogous non-trivial results are known when D≠Kn. In this paper, we characterise all simple digraphs D such that either ℓ(D,α) is equal to Howie–Iwahori’s formula for all α∈⟨D⟩, or ℓ(D,α)=n−fix(α) for all α∈⟨D⟩, or ℓ(D,α)=n−rk(α) for all α∈⟨D⟩. We also obtain bounds for ℓ(D,α) when D is an acyclic digraph or a strong tournament (the latter case corresponds to a smallest generating set of idempotents of rank n−1 of Singn). We finish the paper with a list of conjectures and open problemsPublisher PDFPeer reviewe
The Herschel Virgo Cluster Survey. XX. Dust and gas in the foreground
  Galactic cirrus

We study the correlation between far-infared/submm dust emission and atomic
gas column density in order to derive the properties of the high Galactic
latitude, low density, Milky Way cirrus in the foreground of the Virgo cluster
of galaxies. Dust emission maps from 60 to 850 um are obtained from SPIRE
observations carried out within the Herschel Virgo Cluster Survey, complemented
by IRAS-IRIS and Planck-HFI maps. Data from the Arecibo legacy Fast ALFA Survey
is used to derive atomic gas column densities for two broad velocity
components, low and intermediate velocity clouds. Dust emissivities are derived
for each gas component and each far-infared/submm band. For the low velocity
clouds, we measure an average emissivity 0.79 +/- 0.08 times 1E-20 MJy sr^-1
cm^2 at 250 um. After fitting a modified blackbody to the available bands, we
estimated a dust absorption cross-section 0.49 +/- 0.13 times 1E-25 cm^2 H^-1
at 250 um (with dust temperature T = 20.4 +/- 1.5 K and spectral index beta =
1.53 +/- 0.17). The results are in excellent agreement with those obtained by
Planck over a much larger coverage of the high Galactic latitude cirrus (50% of
the sky vs 0.2% in our work). For dust associated with intermediate velocity
gas, we confirm earlier Planck results and find a higher temperature and lower
emissivity and cross-section. After subtracting the modelled components, we
find regions at scales smaller than 20' where the residuals deviate
significantly from the average, cosmic-infrared-background dominated, scatter.
These large residuals are most likely due to local variations in the cirrus
dust properties (and/or the dust/atomic-gas correlation) or to high-latitude
molecular clouds with average N_H2 <~ 1E20 cm^-2. We find no conclusive
evidence for intracluster dust emission in Virgo.Comment: 25 pages, 19 figures, A&A accepte
Holographic magnetisation density waves.

We numerically construct asymptotically AdS black brane solutions of D = 4 Einstein theory coupled to a scalar and two U(1) gauge fields. The solutions are holographically dual to d = 3 CFTs in a constant external magnetic field along one of the U(1)’s. Below a critical temperature the system’s magnetisation density becomes inhomogeneous, leading to spontaneous formation of current density waves. We find that the transition can be of second order and that the solutions which minimise the free energy locally in the parameter space of solutions have averaged stressed tensor of a perfect fluid
H2FC SUPERGEN: An overview of the Hydrogen and Fuel Cell research across the UK

The United Kingdom has a vast scientific base across the entire Hydrogen and Fuel Cell research landscape, with a world class academic community coupled with significant industrial activity from both UK-based Hydrogen and Fuel Cell companies and global companies with a strong presence within the country. The Hydrogen and Fuel Cell (H2FC) SUPERGEN Hub, funded by the Engineering and Physical Sciences Research Council (EPSRC), was established in 2012 as a five-year programme to bring the UK's H2FC research community together. Here we present the UK's current Hydrogen and Fuel Cell activities along with the role of the H2FC SUPERGEN Hub