pinecone/core-2020-05-10-deduplication huggingface dataset:
Extension of Bilbro-McMillan Charge Density Wave-Superconductivity coexistence relation to quantum régimes: application to superconducting domes around quantum critical points

International audienceQuantum critical points (QCP) accompanied by superconductivity are ubiquitous in condensed matter physics. In general, the transition temperature T_O of an ordered state, e.g. antiferromagnetic, goes to zero under the influence of an external parameter, e.g. pressure. Superconductivity appears before the disappearance of the ordered state, but reaches its maximum when T_O=0. Presently, the implications of the QCP's on superconductivity are a subject of debate. It is propose here that both transition temperatures satisfy the relation 〖T ̃_O〗^2+〖T ̃_c〗^2=1, where the tilde indicates normalization to the maximum values. Inspired from the basic postulate of theories of superconductors, it is proposed as an extension from Bilbro-McMillan relation
Increasing companies' absorptive capacity through participation in collaborative research centres

Norway has developed ambitious goals to become one of the leading environment friendly energy nations. The establishment of Centres for Environment-friendly Energy Research (CEER) scheme is one of the main measures for addressing these goals. The CEER scheme seeks to develop expertise and promote innovation through focus on long-term research in selected areas of environment-friendly energy, in close collaboration between prominent research communities and users like industry and public administrative bodies. The main objective of this paper is to explore and present the potential benefits companies may gain from participation in collaborative research centres like CEER, as well as possible barriers for participation. The framing in this paper is on the development of the absorptive capacity for the industry partners through active participation in the concrete research activities. Based on the empirical material for this paper, collected from one of the eight technological CEERs, we conclude that there are benefits to be gained from companies involving themselves in large-scale research centres. Their potential absorptive capacity is increased by exposure of knowledge and hopefully new positive experience with collaboration over time. However, both this effect, and a potential increase in realized absorptive capacity is very dependent on the active involvement of the company and choosing the right persons to represent the company towards the research centre. By contacting the researchers on a regular, keeping up to date, taking initiative and proposing research projects, combined with some patience, participating industry partners should be well positioned to reap the benefits from their funding
Adaptive estimation of mean and volatility functions in (auto)-regressive models

International audienceIn this paper, we study the problem of nonparametric estimation of the mean and variance functionsb and σ2 in a model: Xi+1=b(Xi)+σ(Xi)εi+1. For this purpose, we consider a collection of finite dimensional linear spaces. We estimate b using a mean squares estimator built on a data driven selected linear space among the collection. Then an analogous procedure estimates σ2, using a possibly different collection of models. Both data driven choices are performed via the minimization of penalized mean squares contrasts. The penalty functions are random in order not to depend on unknown variance-type quantities. In all cases, we state nonasymptotic risk bounds in empirical norm for our estimators and we show that they are both adaptive in the minimax sense over a large class of Besov balls. Lastly, we give the results of intensive simulation experiments which show the good performances of our estimator
Sparsely sampling the sky: Regular vs. random sampling

International audienceAims. The next generation of galaxy surveys, aiming to observe millions of galaxies, are expensive both in time and money. This raises questions regarding the optimal investment of this time and money for future surveys. In a previous work, we have shown that a sparse sampling strategy could be a powerful substitute for the – usually favoured – contiguous observation of the sky. In our previous paper, regular sparse sampling was investigated, where the sparse observed patches were regularly distributed on the sky. The regularity of the mask introduces a periodic pattern in the window function, which induces periodic correlations at specific scales. Methods. In this paper, we use a Bayesian experimental design to investigate a “random” sparse sampling approach, where the observed patches are randomly distributed over the total sparsely sampled area. Results. We find that in this setting, the induced correlation is evenly distributed amongst all scales as there is no preferred scale in the window function. Conclusions. This is desirable when we are interested in any specific scale in the galaxy power spectrum, such as the matter-radiation equality scale. As the figure of merit shows, however, there is no preference between regular and random sampling to constrain the overall galaxy power spectrum and the cosmological parameters
Hydrophilicity of Mordenites with Different SiO[2]/Al[2]O[3] Molar Ratio

Hydrophicility of H-mordenites with SiO[2]/Al[2]O[3] molar ratio (MR) varying in the range from 10 up to 206 was investigated by IR spectroscopy, TPD of ammonia and thermogravimetry methods. It was found that dealuminated mordenite retains affinity for water in the entire MR range, in contrast to published results for synthetic pentasil zeolites. In H-mordenites extra-framework aluminum exists in the form of dimers of aluminum hydroxide, those presumably are stabilized in the channels of mordenite. An inversely proportional correlation between the water content in pores and the concentration of channel Lewis sites was observed
Exogenous control over intracellular acidification: Enhancement via proton caged compounds coupled to gold nanoparticles and analternative pathway with DMSO

Proton caged compounds exhibit a characteristic behavior when\ud
directly dosed into cells or being coupled to gold nanoparticles\ud
prior to the dosing.When irradiated in the near ultraviolet region,\ud
they release protons that interac twith intracellular HCO3-\ud
to yield H2CO3. The dissociation of carbonic acid,then, releases CO2 that\ud
can be distinctively singled out in infrared spectra.\ud
In the process of searching a pathway to augment the intra-\ud
cellular uptake of proton caged compounds,we probed the asso-\ud
ciation of 1-(2-nitrophenyl)-ethylhexadecylsulfonate (HDNS) with\ud
DMSO, an agent to enhance the membrane permeability.We found\ud
out a different UV-induced protonation mechanism that opens up to new conduits of employing of proton caged compounds
Online dispute resolution: an artificial intelligence perspective

Litigation in court is still the main dispute resolution mode. However, given the amount
and characteristics of the new disputes, mostly arising out of electronic contracting, courts are
becoming slower and outdated. Online Dispute Resolution (ODR) recently emerged as a set of
tools and techniques, supported by technology, aimed at facilitating conflict resolution. In this
paper we present a critical evaluation on the use of Artificial Intelligence (AI) based techniques in
ODR. In order to fulfill this goal, we analyze a set of commercial providers (in this case twenty
four) and some research projects (in this circumstance six). Supported by the results so far
achieved, a new approach to deal with the problem of ODR is proposed, in which we take on some
of the problems identified in the current state of the art in linking ODR and AI.The work described in this paper is included in TIARAC - Telematics and
Artificial Intelligence in Alternative Conflict Resolution Project (PTDC/JUR/71354/2006), which
is a research project supported by FCT (Science & Technology Foundation), Portugal. The work
of Davide Carneiro is also supported by a doctoral grant by FCT (SFRH/BD/64890/2009).Acknowledgments. The work described in this paper is included in TIARAC - Telematics and Artificial Intelligence in Alternative Conflict Resolution Project (PTDC/JUR/71354/2006), which is a research project supported by FCT (Science & Technology Foundation), Portugal. The work of Davide Carneiro is also supported by a doctoral grant by FCT (SFRH/BD/64890/2009)
Children's exposure to second hand smoke at home : a cross-sectional study in Portugal

Second-hand tobacco smoke (SHS) is a major indoor pollutant that causes serious health problems for all exposed, especially children. Children are often exposed to SHS at home, due to parental or other households’ or guests’ smoking. This study describes Portuguese children's exposure to SHS at home (total and by Portuguese main regions).

In 2010/2011, a questionnaire was applied to a sample of Portuguese children in the 4th grade (N = 3187, mean age 9.05 ± 0.7 years, 51.1% male). Descriptive analysis, chi-square tests and crude odds ratios were performed.

Of the participants, 62.9% of those with smoking parents and 19.2% of those with non-smoking parents were exposed to SHS at their home. Parental smoking varied significantly among regions and was significantly associated with children's exposure to SHS at home.

Children's exposure to SHS at home was high, especially if their parents smoke. Children living in Lisbon Region presented the highest SHS exposure rate. The association of SHS exposure with geographic regions suggests the influence of social and contextual factors on smoking behaviour and on tobacco control effectiveness. Our findings highlight the need to effectively prevent children's SHS exposure at their home and to develop tailored tobacco control measures by region.This work was supported by FEDER through the Programa Operacional Factores de Competitividade - COMPETE (FCOMP-01-0124-FEDER-009117), and by FCT - Fundacao para a Ciencia e a Tecnologia (Ref. PTDC/CPE-CED/098281/2008)
Transverse momentum dependence of D-meson production in Pb-Pb collisions at √ sNN=2.76 TeV

The production of prompt charmed mesons D0, D+ and D∗+, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the centre-of-mass energy per nucleon pair, sNN−−−√, of 2.76 TeV. The production yields for rapidity |y| < 0.5 are presented as a function of transverse momentum, p T, in the interval 1–36 GeV/c for the centrality class 0–10% and in the interval 1–16 GeV/c for the centrality class 30–50%. The nuclear modification factor R AA was computed using a proton-proton reference at s√=2.76 TeV, based on measurements at s√=7 TeV and on theoretical calculations. A maximum suppression by a factor of 5-6 with respect to binary-scaled pp yields is observed for the most central collisions at p T of about 10 GeV/c. A suppression by a factor of about 2-3 persists at the highest p T covered by the measurements. At low p T (1-3 GeV/c), the R AA has large uncertainties that span the range 0.35 (factor of about 3 suppression) to 1 (no suppression). In all p T intervals, the R AA is larger in the 30-50% centrality class compared to central collisions. The D-meson R AA is also compared with that of charged pions and, at large p T, charged hadrons, and with model calculations
Measurement of the t-channel single top-quark production cross section in pp collisions at root s=7 TeV with the ATLAS detector

We report a measurement of the cross section of single top-quark production in the t-channel using 1.04 fb(-1) of pp collision data at root s = 7 TeV recorded with the ATLAS detector at the LHC. Selected events feature one electron or muon, missing transverse momentum, and two or three jets, exactly one of them identified as originating from a b quark. The cross section is measured by fitting the distribution of a multivariate discriminant constructed with a neural network, yielding sigma(t) = 83 +/- 4 (stat.)(-19)(+20) (syst.) pb, which is in good agreement with the prediction of the Standard Model. Using the ratio of the measured to the theoretically predicted cross section and assuming that the top-quark-related CKM matrix elements obey the relation vertical bar V-tb vertical bar >> vertical bar V-ts vertical bar, vertical bar V-td vertical bar, the coupling strength at the W-t-b vertex is determined to be vertical bar V-tb vertical bar = 1.13(-0.13)(+0.14). If it is assumed that vertical bar V-tb vertical bar <= 1 a lower limit of vertical bar V-tb vertical bar > 0.75 is obtained at the 95% confidence level
Project management office models: a review

Organizations are facing competitive and globalized markets, as well as constant environmental changes that often require an
organizational restructuring of the business models in order to boost performance. Project management practices can help to achieve
strategic goals and increase value of projects in organizations. The Project Management Office (PMO) is an organizational structure
created in order to promote and improve project management practice, by adopting appropriate methodologies to achieve high
levels of efficiency and effectiveness. In recent years several models and functions of PMO have been proposed by many authors,
varying from the PMO with a sole function of reporting project execution, to the one who participates in the definition of
organizational strategies. The main purpose of this article is to present a review of the typologies of PMO. Since the importance of
PMO is increasing in organizations, the results of this work are useful to provide guidance to organizations on implementing or
restructuring their own PMO
Ionospheric Modelling using GPS to Calibrate the MWA. II :
                    Regional ionospheric modelling using GPS and GLONASS to estimate ionospheric gradients

This document is the Accepted Manuscript version of a Published Work that appeared in final form in Publications of the Astronomical Society of Australia (PASA), after peer review and technical editing by the publisher. The version of record is available on line at https://doi.org/10.1017/pasa.2016.22 COPYRIGHT: ?? Astronomical Society of Australia 2016.We estimate spatial gradients in the ionosphere using the Global Positioning System (GPS) and GLONASS (Russian global navigation system) observations, utilising data from multiple GPS stations in the vicinity of Murchison Radio-astronomy Observatory (MRO). In previous work the ionosphere was characterised using a single-station to model the ionosphere as a single layer of fixed height and this was compared with ionospheric data derived from radio astronomy observations obtained from the Murchison Widefield Array (MWA). Having made improvements to our data quality (via cycle slip detection and repair) and incorporating data from the GLONASS system, we now present a multi-station approach. These two developments significantly improve our modelling of the ionosphere. We also explore the effects of a variable-height model. We conclude that modelling the small-scale features in the ionosphere that have been observed with the MWA will require a much denser network of Global Navigation Satellite System (GNSS) stations than is currently available at the MRO
The administration route is decisive for the ability of the vaccine adjuvant CAF09 to induce antigen-specific CD8+ T-cell responses : the immunological consequences of the biodistribution profile

A prerequisite for vaccine-mediated induction of CD8+ T-cell responses is the targeting of dendritic cell (DC) subsets specifically capable of cross-presenting antigen epitopes to CD8+ T cells. Administration of a number of cationic adjuvants via the intraperitoneal (i.p.) route has been shown to result in strong CD8+ T-cell responses, whereas immunization via e.g. the intramuscular (i.m.) or subcutaneous (s.c.) routes often stimulate weak CD8+ T-cell responses. The hypothesis for this is that self-drainage of the adjuvant/antigen to the lymphoid organs, which takes place upon i.p. immunization, is required for the subsequent activation of cross-presenting lymphoid organ-resident CD8α+ DCs. In contrast, s.c. or i.m. immunization usually results in the formation of a depot at the site of injection (SOI), which hinders the self-drainage and targeting of the vaccine to cross-presenting CD8α+ DCs. We investigated this hypothesis by correlating the biodistribution pattern and the adjuvanticity of the strong CD8+ T-cell inducing liposomal cationic adjuvant formulation 09 (CAF09), which is composed of dimethyldioctadecylammonium bromide/monomycoloyl glycerol liposomes with polyinosinic:polycytidylic acid electrostatically adsorbed to the surface. Biodistribution studies with radiolabeled CAF09 and a surface-adsorbed model antigen [ovalbumin (OVA)] showed that a significantly larger fraction of the vaccine dose localized in the draining lymph nodes (dLNs) and the spleen 6 h after i.p. immunization, as compared to after i.m. immunization. Studies with fluorescently labelled OVA+CAF09 demonstrated a preferential association of OVA+CAF09 to DCs/monocytes, as compared to macrophages and B cells, following i.p. immunization. Administration of OVA+CAF09 via the i.p. route did also result in DC activation, whereas no DC activation could be measured within the same period with unadjuvanted OVA and OVA+CAF09 administered via the s.c. or i.m. routes. In the dLNs, the highest level of activated, cross-presenting CD8α+ DCs was detected at 24 h post immunization, whereas an influx of activated, migrating and cross-presenting CD103+ DCs to the dLNs could be measured after 48 h. This suggests that the CD8α+ DCs are activated by self-draining OVA+CAF09 in the lymphoid organs, whereas the CD103+ DCs are stimulated by the OVA+CAF09 at the SOI. These results support the hypothesis that the self-drainage of OVA+CAF09 to the draining LNs is required for the activation of CD8α+ DCs, while the migratory CD103+ DCs may play a role in sustaining the subsequent induction of strong CD8+ T-cell responses
Fine-scale monitoring of fish movements and multiple environmental parameters around a decommissioned offshore oil platform : A pilot study in the North Sea

Acknowledgements The authors would like to thank OSPAR for providing data for offshore structures in the North Sea, and Imants G. Priede (University of Aberdeen), Stewart Chalmers (University of Aberdeen), John Polanski (University of Aberdeen), Thomas O’Donoghue (University of Aberdeen), and Michelle Horsfield (BP), Anne Walls (BP), Peter Evans (BP), Alwyn Mcleary (BP) and all the crew members of the Miller platform for invaluable advice and support in conducting this research project. This work was coordinated by Oceanlab, University of Aberdeen and supported by the BP Fellowship in Applied Fisheries Programme.Peer reviewedPublisher PD
Brain network characterization of high-risk preterm-born school-age children.

Higher risk for long-term cognitive and behavioral impairments is one of the hallmarks of extreme prematurity (EP) and pregnancy-associated fetal adverse conditions such as intrauterine growth restriction (IUGR). While neurodevelopmental delay and abnormal brain function occur in the absence of overt brain lesions, these conditions have been recently associated with changes in microstructural brain development. Recent imaging studies indicate changes in brain connectivity, in particular involving the white matter fibers belonging to the cortico-basal ganglia-thalamic loop. Furthermore, EP and IUGR have been related to altered brain network architecture in childhood, with reduced network global capacity, global efficiency and average nodal strength. In this study, we used a connectome analysis to characterize the structural brain networks of these children, with a special focus on their topological organization. On one hand, we confirm the reduced averaged network node degree and strength due to EP and IUGR. On the other, the decomposition of the brain networks in an optimal set of clusters remained substantially different among groups, talking in favor of a different network community structure. However, and despite the different community structure, the brain networks of these high-risk school-age children maintained the typical small-world, rich-club and modularity characteristics in all cases. Thus, our results suggest that brain reorganizes after EP and IUGR, prioritizing a tight modular structure, to maintain the small-world, rich-club and modularity characteristics. By themselves, both extreme prematurity and IUGR bear a similar risk for neurocognitive and behavioral impairment, and the here defined modular network alterations confirm similar structural changes both by IUGR and EP at school age compared to control. Interestingly, the combination of both conditions (IUGR + EP) does not result in a worse outcome. In such cases, the alteration in network topology appears mainly driven by the effect of extreme prematurity, suggesting that these brain network alterations present at school age have their origin in a common critical period, both for intrauterine and extrauterine adverse conditions
A density spike on astrophysical scales from an N-field waterfall transition

Hybrid inflation models are especially interesting as they lead to a spike in the density power spectrum on small scales, compared to the CMB, while also satisfying current bounds on tensor modes. Here we study hybrid inflation with N waterfall fields sharing a global SO(N) symmetry. The inclusion of many waterfall fields has the obvious advantage of avoiding topologically stable defects for N>3. We find that it also has another advantage: it is easier to engineer models that can simultaneously (i) be compatible with constraints on the primordial spectral index, which tends to otherwise disfavor hybrid models, and (ii) produce a spike on astrophysically large length scales. The latter may have significant consequences, possibly seeding the formation of astrophysically large black holes. We calculate correlation functions of the time-delay, a measure of density perturbations, produced by the waterfall fields, as a convergent power series in both 1/N and the field's correlation function Δ(x). We show that for large N, the two-point function is 〈δt(x)δt(0)〉 ∝ Δ[superscript 2](|x|)/N and the three-point function is 〈δt(x)δt(y)δt(0)〉 ∝ Δ(|x−y|)Δ(|x|)Δ(|y|)/N[superscript 2]. In accordance with the central limit theorem, the density perturbations on the scale of the spike are Gaussian for large N and non-Gaussian for small N.United States. Dept. of Energy (Contract DE-SC00012567)Massachusetts Institute of Technology. Undergraduate Research Opportunities ProgramUniversity of Illinois at Urbana-Champaign (Fortner Fellowship
Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at √s = 8 TeV

A search is presented for particle dark matter produced in association with a pair of top quarks in pp collisions at a centre-of-mass energy of √s = 8 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 19.7 fb[superscript −1]. This search requires the presence of one lepton, multiple jets, and large missing transverse energy. No excess of events is found above the SM expectation, and upper limits are derived on the production cross section. Interpreting the findings in the context of a scalar contact interaction between fermionic dark matter particles and top quarks, lower limits on the interaction scale are set. These limits are also interpreted in terms of the dark matter-nucleon scattering cross sections for the spin-independent scalar operator and they complement direct searches for dark matter particles in the low mass region.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio