pinecone/core-2020-05-10-deduplication huggingface dataset:
Reconstruction of ice-sheet changes in the Antarctic Peninsula since the Last Glacial Maximum

This is an Open Access article published by Elsevier and distributed under a Creative Commons Attribution Licence CC-BY 3.0 http://creativecommons.org/licenses/by/3.0/ which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.This paper compiles and reviews marine and terrestrial data constraining the dimensions and configuration of the Antarctic Peninsula Ice Sheet (APIS) from the Last Glacial Maximum (LGM) through deglaciation to the present day. These data are used to reconstruct grounding-line retreat in 5ka time-steps from 25kaBP to present. Glacial landforms and subglacial tills on the eastern and western Antarctic Peninsula (AP) shelf indicate that the APIS was grounded to the outer shelf/shelf edge at the LGM and contained a series of fast-flowing ice streams that drained along cross-shelf bathymetric troughs. The ice sheet was grounded at the shelf edge until ~20calkaBP. Chronological control on retreat is provided by radiocarbon dates on glacimarine sediments from the shelf troughs and on lacustrine and terrestrial organic remains, as well as cosmogenic nuclide dates on erratics and ice moulded bedrock. Retreat in the east was underway by about 18calkaBP. The earliest dates on recession in the west are from Bransfield Basin where recession was underway by 17.5calkaBP. Ice streams were active during deglaciation at least until the ice sheet had pulled back to the mid-shelf. The timing of initial retreat decreased progressively southwards along the western AP shelf; the large ice stream in Marguerite Trough may have remained grounded at the shelf edge until about 14calkaBP, although terrestrial cosmogenic nuclide ages indicate that thinning had commenced by 18kaBP. Between 15 and 10calkaBP the APIS underwent significant recession along the western AP margin, although retreat between individual troughs was asynchronous. Ice in Marguerite Trough may have still been grounded on the mid-shelf at 10calkaBP. In the Larsen-A region the transition from grounded to floating ice was established by 10.7-10.6calkaBP. The APIS had retreated towards its present configuration in the western AP by the mid-Holocene but on the eastern peninsula may have approached its present configuration several thousand years earlier, by the start of the Holocene. Mid to late-Holocene retreat was diachronous with stillstands, re-advances and changes in ice-shelf configuration being recorded in most places. Subglacial topography exerted a major control on grounding-line retreat with grounding-zone wedges, and thus by inference slow-downs or stillstands in the retreat of the grounding line, occurring in some cases on reverse bed slopes
Disk-like bicelles in block copolymer/homopolymer blends

Mixtures of micelle-forming and lamella-forming amphiphiles in solution can form disk-shaped bilayers, sometimes referred to as bicelles. Using self-consistent field theory (SCFT), we investigate the structure and stability of these aggregates in a blend of two species of PS-PDMS diblock with PDMS homopolymer at 225C. We find that the center of each disk is mainly composed of lamella-forming diblocks, while its thicker rim is mostly formed of micelle-forming diblocks. However, this segregation is not perfect, and the concentration of micelle formers is of the order of 10% on the flat central surface of the bicelle. We also find that the addition of micelle former to the mixture of lamella former and homopolymer is necessary for disk-like bicelles to be stable. Specifically, the free energy density of the disk has a minimum as a function of the disk radius when both micelle- and lamella-forming diblocks are present, indicating that the bicelles have a preferred, finite radius. However, it decays monotonically when only lamella former is present, indicating that the bicelle structure is always unstable with respect to further aggregation in these systems. Finally, we identify a concentration range where the bicelle is predicted to have a lower free energy density than the simple spherical, cylindrical and lamellar aggregates formed with similar amphiphile number fractions
Influence of Non-Potential Coronal Magnetic Topology on Solar-Wind
  Models

By comparing a magneto-frictional model of the low coronal magnetic field to
a potential-field source-surface model, we investigate the possible impact of
non-potential magnetic structure on empirical solar-wind models. These
empirical models (such as Wang-Sheeley-Arge) estimate the distribution of
solar-wind speed solely from the magnetic-field structure in the low corona.
Our models are computed in a domain between the solar surface and 2.5 solar
radii, and are extended to 0.1 AU using a Schatten current-sheet model. The
non-potential field has a more complex magnetic skeleton and quasi-separatrix
structures than the potential field, leading to different sub-structure in the
solar-wind speed proxies. It contains twisted magnetic structures that can
perturb the separatrix surfaces traced down from the base of the heliospheric
current sheet. A significant difference between the models is the greater
amount of open magnetic flux in the non-potential model. Using existing
empirical formulae this leads to higher predicted wind speeds for two reasons:
partly because magnetic flux tubes expand less rapidly with height, but more
importantly because more open field lines are further from coronal-hole
boundaries.Comment: 21 pages, 14 figures, accepted for publication in Solar Physic
Distinguishing `disks' from `mergers': tracing the kinematic asymmetries
  in local (U)LIRGs using `kinemetry'-based criteria

The kinematic characterization of different galaxy populations is a key
observational input to distinguish between different galaxy evolutionary
scenarios, since it helps to determine the number ratio of rotating disks to
mergers at different cosmic epochs. Local (U)LIRGs offer a unique opportunity
to study at high linear resolution and S/N extreme star forming events and
compare them with those observed at high-z. We obtained Very Large Telescope
(VLT) VIMOS optical integral field spectroscopy (IFS) data of a sample of 38
(U)LIRGs. The `unweighted' and `weighted' {kinemetry}-based methods are used to
kinematically classify our galaxies in `disk' and `merger'. We simulate our
systems at z=3 to evaluate how a loss of angular resolution affects our
results. From the kinemetry-based analysis we are able classify our local
(U)LIRGs in three distinct kinematic groups according to their total kinematic
asymmetry values (K$_{tot}$) as derived when using the weighted (unweighted)
method: 1) 25 out of 50 galaxies are kinematically classified as `disk', with a
K$_{tot}\leq$ 0.16 (0.14); 2) 9 out of 50 galaxies are kinematically classified
as `merger', with a K$_{tot}\geq$ 0.94 (0.66); 3) 16 out of 50 galaxies lie in
the `transition region', in which disks and mergers coexist, with 0.16 (0.14)
$<$ K$_{tot}$ $<$ 0.94 (0.66). When we apply our criteria to the high-z
simulated systems, a lower total kinematic asymmetry frontier value (K$_{tot}$
$\sim$ 0.16 ($\sim$ 0.14)) is derived with respect to that found locally. The
loss of angular resolution smears out the kinematic features, thus making
objects to appear more kinematically regular than actually they are.Comment: 17 pages, 7 figures, 4 table
Search for associations containing young stars (SACY) VII. New stellar
  and substellar candidate members in the young associations

The young associations offer us one of the best opportunities to study the
properties of young stellar and substellar objects and to directly image
planets thanks to their proximity ($<$200 pc) and age ($\approx$5-150 Myr).
However, many previous works have been limited to identifying the brighter,
more active members ($\approx$1 M$_\odot$) owing to photometric survey
sensitivities limiting the detections of lower mass objects. We search the
field of view of 542 previously identified members of the young associations to
identify wide or extremely wide (1000-100,000 au in physical separation)
companions. We combined 2MASS near-infrared photometry ($J$, $H$, $K$) with
proper motion values (from UCAC4, PPMXL, NOMAD) to identify companions in the
field of view of known members. We collated further photometry and spectroscopy
from the literature and conducted our own high-resolution spectroscopic
observations for a subsample of candidate members. This complementary
information allowed us to assess the efficiency of our method. We identified 84
targets (45: 0.2-1.3 M$_\odot$, 17: 0.08-0.2 M$_\odot$, 22: $<$0.08 M$_\odot$)
in our analysis, ten of which have been identified from spectroscopic analysis
in previous young association works. For 33 of these 84, we were able to
further assess their membership using a variety of properties (X-ray emission,
UV excess, H$_\alpha$, lithium and K I equivalent widths, radial velocities,
and CaH indices). We derive a success rate of 76-88% for this technique based
on the consistency of these properties. Once confirmed, the targets identified
in this work would significantly improve our knowledge of the lower mass end of
the young associations. Additionally, these targets would make an ideal new
sample for the identification and study of planets around nearby young stars.Comment: 28 pages, 24 figures, accepted in A&
Measurement of the transverse momentum spectrum of the Higgs boson
  produced in pp collisions at sqrt(s) = 8 TeV using H to WW decays

The cross section for Higgs boson production in pp collisions is studied
using the H to WW decay mode, followed by leptonic decays of the W bosons to an
oppositely charged electron-muon pair in the final state. The measurements are
performed using data collected by the CMS experiment at the LHC at a
centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of
19.4 inverse femtobarns. The Higgs boson transverse momentum (pT) is
reconstructed using the lepton pair pT and missing pT. The differential cross
section times branching fraction is measured as a function of the Higgs boson
pT in a fiducial phase space defined to match the experimental acceptance in
terms of the lepton kinematics and event topology. The production cross section
times branching fraction in the fiducial phase space is measured to be 39 +/- 8
(stat) +/- 9 (syst) fb. The measurements are found to agree, within
experimental uncertainties, with theoretical calculations based on the standard
model.Comment: Replaced with the published version. Added the journal reference and
  DOI. All the figures and tables can be found at
  http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-15-01
Designing a knowledge co-production operating space for urban environmental governance lessons from Rotterdam, Netherlands and Berlin, Germany

Challenges for a sustainable urban development are increasingly important in cities because urbanization and related land take come up with negative challenges for the environment and for city residents. Searching for successful solutions to environmental problems requires combined efforts of different scientific disciplines and an active dialogue between stakeholders from policy and society. In this paper, we present a comparative assessment of the way policy-science dialogues have achieved knowledge co-production about strategic urban environmental governance action using the cities of Berlin in Germany and Rotterdam in the Netherlands as case studies. The ecosystem services framework is applied as a lens for policy-science interaction and a 'knowledge co-production operating space' is introduced. We show how policy officers, urban planners, practitioners and scientists learned from each other, and highlight the impact of this knowledge co-production for governance practice. We found that the concerted collaboration and co-creation between researchers and policy officers have led to mutual learning and establishment of relationships and trust in both cities. Not only the policy-relevance of research and its policy uptake were achieved but also new insights for research blind spots were created. In our conclusions we reflect on co-production processes with two types of conditions that we introduced to be most influential in the way knowledge can be co-created. These are conditions that relate to the way knowledge co-production processes are set-up and, conditions that relate to the expected value or benefit that the co-produced knowledge will bring across society, policy and practice
Factors influencing participant"s satisfaction in a victim-offender program

This paper analyses the relationship between external factors, internal factors and satisfaction level of participants in an adult victim-offender mediation (VOM) program. The validated"Criminal Mediation Satisfaction Questionnaire" (CSM-P) was administered to 103 offenders and 110 victims. Analysis explored in the entire sample variables related to satisfaction and the relationship between socio-legal variables, criminal record and mediation process with satisfaction level for victims and offenders as well as for participants with low and high satisfaction scores. Results show high satisfaction among victims and offenders. Victim' age and absence of aggravating circumstances were related to higher satisfaction levels.This paper analyses the relationship between external factors, internal factors and satisfaction level of participants in an adult victim-offender mediation (VOM) program. The validated “Criminal Mediation Satisfaction Questionnaire” (CSM-P) was administered to 103 offenders and 110 victims. Analysis explored in the entire sample variables related to satisfaction and the relationship between socio-legal variables, criminal record and mediation process with satisfaction level for victims and offenders as well as for participants with low and high satisfaction scores. Results show high satisfaction among victims and offenders. Victim’ age and absence of aggravating circumstances were related to higher satisfaction levels
Effects of parameter estimation on prediction densities: A bootstrap approach

We use a bootstrap procedure to study the impact of parameter estimation on prediction densities, focusing on seasonal ARIMA processes with possibly non normal innovations. We compare prediction densities obtained using the Box and Jenkins approach with bootstrap densities which may be constructed either taking into account parameter estimation variability or using parameter estimates as if they were known parameters. By means of Monte Carlo experiments, we show that the average coverage of the intervals is closer to the nominal value when intervals are constructed incorporating parameter uncertainty. The effects of parameter estimation are particularly important for small sample sizes and when the error distribution is not Gaussian. We also analyze the effect of the estimation method on the shape of prediction densities comparing prediction densities constructed when the parameters are estimated by Ordinary Least Squares (OLS) and by Least Absolute Deviations (LAD). We show how, when the error distribution is not Gaussian, the average coverage and length of intervals based on LAD estimates are closer to nominal values than those based on OLS estimates. Finally, the performance of the bootstrap intervals is illustrated with two empirical examples.Publicad
Older adult education in a Maltese University of the Third Age : a critical perspective

The education of older adults has been considered the fastest growing branch of adult education in post-industrial countries and one of the most crucial challenges facing current adult European education. It has generated a significant number of research projects and publications seeking to analyse the character of third age learning. This article represents a further attempt, in Sandra Cusack’s words, to root down the\ud
expansion of older adult education programmes in ‘Critical Educational Theory’, as a distinct form of ‘Critical Sociological Theory’. Critical field research was carried out at the University of the Third Age (U3A) in Valletta (Malta), due to the fact that the U3A represents one of the most successful and important educational programmes specifically developed for older people. Data were interpreted through Paulo Freire’s critical pedagogy and critical educational gerontological theory. The study revealed that despite the often reported positive functions of U3A for older persons and society in\ud
general, the Valletta U3A is grounded in mainstream and traditional models of educational practice which equate education as a one-way flow of information from teachers to students. The study concluded that as a result of such a ‘banking’ ideology, the U3A fails to act as an archetype of transformative education but is yet another euphemism for glorified occupational therapy that is both conservative and oppressive
Failure on clinical image quality criteria in digital mammography: how can radiographers do better?

Purpose: To assess image quality using PGMI (perfect, good, moderate, inadequate) scale in digital mammography examinations acquired in DR systems. Identify the main failures and propose corrective actions. Evaluate the most typical breast density. Methods and Materials: Clinical image quality criteria were evaluated considering mammograms acquired in 13 DR systems and classified according to PGMI scale using the criteria described in European Commission guidelines
for radiographers. The breast density was assessed according to ACR recommendations. The data were collected on the acquisition system monitor to reproduce the daily practice of the radiographer. Results: The image quality criteria were evaluated in 3044 images. The criteria were fully achieved in 41% of the images that were classified as P (perfect), 31 % of the images were classified as M (moderate), 20% G (good) and 9% I (inadequate). The main cause of inadequate image quality was absence of all breast tissue in the image, skin folders in the pectoral muscle and in the infra-mammary angle. The higher number of failures occurred in MLO projections (809 out of 1022). The most represented (36%) breast type was type 2 (25-50% glandular tissue). Conclusion: Incorrect radiographic technique was frequently detected suggesting potential training needs and poor communication between the team members (radiographer and radiologists). Further correlations are necessary to identify the main causes for the failures, namely specific education and training in digital mammography and workload
Search for s-channel single top-quark production in proton-proton collisions at root s=8 TeV with the ATLAS detector

Çetin, Serkant Ali (Dogus Author)This Letter presents a search at the LHC for s-channel single top-quark production in proton-proton collisions at a centre-of-mass energy of 8 TeV. The analyzed data set was recorded by the ATLAS detector and corresponds to an integrated luminosity of 20.3 fb(-1). Selected events contain one charged lepton, large missing transverse momentum and exactly two b-tagged jets. A multivariate event classifier based on boosted decision trees is developed to discriminate s-channel single top-quark events from the main background contributions. The signal extraction is based on a binned maximum-likelihood fit of the output classifier distribution. The analysis leads to an upper limit on the s-channel single topquark production cross-section of 14.6 pb at the 95% confidence level. The fit gives a cross-section of sigma(s) = 5.0 +/- 4.3 pb, consistent with the Standard Model expectation
Search for same-sign top-quark production and fourth-generation
  down-type quarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

A search is presented for same-sign top-quark production and down-type heavy
quarks of charge -1/3 in events with two isolated leptons (electrons or muons)
that have the same electric charge, at least two jets and large missing
transverse momentum. The data are selected from pp collisions at sqrt(s)=7 TeV
recorded by the ATLAS detector and correspond to an integrated luminosity of
1.04 inverse femtobarns. The observed data are consistent with expectations
from Standard Model processes. Upper limits are set at 95% confidence level on
the cross section of new sources of same-sign top-quark pair production of
1.4-2.0 pb depending on the assumed mediator mass. Upper limits are also set on
the pair-production cross-section for new heavy down-type quarks; a lower limit
of 450 GeV is set at 95% confidence level on the mass of heavy down-type quarks
under the assumption that they decay 100% of the time to Wt.Comment: 23 pages plus author list (46 pages total), 10 figures, 9 tables,
  revised author list, matches version published in JHE
Functional Stepped Surfaces, Flips and Generalized Substitutions

Remplace N° 06014 (2006) 23 [lirmm-00102710 ? version 1]International audienceA substitution is a non-erasing morphism of the free monoid. The notion of multidimensional substitution of non-constant length acting on multidimensional words is proved to be well-defined on the set of two-dimensional words related to discrete approximations of irrational planes. Such a multidimensional substitution can be associated with any usual unimodular substitution. The aim of this paper is to extend the domain of definition of such multidimensional substitutions to functional stepped surfaces. One central tool for this extension is the notion of flips acting on tilings by lozenges of the plane
Convergence of Genes and Cellular Pathways Dysregulated in Autism Spectrum Disorders.

International audienceRare copy-number variation (CNV) is an important source of risk for autism spectrum disorders (ASDs). We analyzed 2,446 ASD-affected families and confirmed an excess of genic deletions and duplications in affected versus control groups (1.41-fold, p = 1.0 × 10(-5)) and an increase in affected subjects carrying exonic pathogenic CNVs overlapping known loci associated with dominant or X-linked ASD and intellectual disability (odds ratio = 12.62, p = 2.7 × 10(-15), ∼3% of ASD subjects). Pathogenic CNVs, often showing variable expressivity, included rare de novo and inherited events at 36 loci, implicating ASD-associated genes (CHD2, HDAC4, and GDI1) previously linked to other neurodevelopmental disorders, as well as other genes such as SETD5, MIR137, and HDAC9. Consistent with hypothesized gender-specific modulators, females with ASD were more likely to have highly penetrant CNVs (p = 0.017) and were also overrepresented among subjects with fragile X syndrome protein targets (p = 0.02). Genes affected by de novo CNVs and/or loss-of-function single-nucleotide variants converged on networks related to neuronal signaling and development, synapse function, and chromatin regulation
Parameters of heavy quark effective theory from N f = 2 lattice QCD

We report on a non-perturbative determination of the parameters of the lattice Heavy Quark Effective Theory (HQET) Lagrangian and of the time component of the heavy-light axial-vector current with Nf=2 flavors of massless dynamical quarks. The effective theory is considered at the 1/mh order, and the heavy mass mh covers a range from slightly above the charm to beyond the beauty region. These HQET parameters are needed to compute, for example, the b-quark mass, the heavy-light spectrum and decay constants in the static approximation and to order 1/mh in HQET. The determination of the parameters is done non-perturbatively. The computation reported in this paper uses the plaquette gauge action and two different static actions for the heavy quark described by HQET. For the light-quark action we choose non-perturbatively O(a)-improved Wilson fermions