pinecone/core-2020-05-10-deduplication huggingface dataset:
A relative Szemerédi theorem

The celebrated Green-Tao theorem states that there are arbitrarily long arithmetic progressions in the primes. One of the main ingredients in their proof is a relative Szemerédi theorem which says that any subset of a pseudorandom set of integers of positive relative density contains long arithmetic progressions. In this paper, we give a simple proof of a strengthening of the relative Szemerédi theorem, showing that a much weaker pseudorandomness condition is sufficient. Our strengthened version can be applied to give the first relative Szemerédi theorem for k-term arithmetic progressions in pseudorandom subsets of  Z[subscript N]  of density  N[superscript −c[subscript k]]. The key component in our proof is an extension of the regularity method to sparse pseudorandom hypergraphs, which we believe to be interesting in its own right. From this we derive a relative extension of the hypergraph removal lemma. This is a strengthening of an earlier theorem used by Tao in his proof that the Gaussian primes contain arbitrarily shaped constellations and, by standard arguments, allows us to deduce the relative Szemerédi theorem.Simons Foundation. Postdoctoral FellowshipNational Science Foundation (U.S.) (grant DMS-1069197)Alfred P. Sloan FoundationMassachusetts Institute of Technology (MIT NEC Corporation Fund Award)Microsoft Research (PhD Fellowship
Deep underground rotation measurements: GINGERino ring laser gyroscope
  in Gran Sasso

GINGERino is a large frame laser gyroscope investigating the ground motion in
the most inner part of the underground international laboratory of the Gran
Sasso, in central Italy. It consists of a square ring laser with a $3.6$ m
side. Several days of continuous measurements have been collected, with the
apparatus running unattended. The power spectral density in the seismic
bandwidth is at the level of $10^{-10} \rm{(rad/s)/\sqrt{Hz}}$. A maximum
resolution of $30\,\rm{prad/s}$ is obtained with an integration time of few
hundred seconds. The ring laser routinely detects seismic rotations induced by
both regional earthquakes and teleseisms. A broadband seismic station is
installed on the same structure of the gyroscope. First analysis of the
correlation between the rotational and the translational signal are presented.Comment: Accepted for publication in Review in Scientific Instrument
Sedentary behaviour across the primary-secondary school transition: a systematic review

This is an open access article under the CC BY license (http://\ud
creativecommons.org/licenses/by/4.0/).The transition from primary/middle school to secondary/high school is likely to be a key period in children's development, characterised by significant changes in their social and physical environment. However, little is known about the changes in sedentary behaviour that accompany this transition. This review aimed to identify, critically appraise and summarise the evidence on changes in sedentary behaviour across the primary – secondary school transition. Published English language studies were located from computerised and manual searches in 2015. Inclusion criteria specified a longitudinal design, baseline assessment when children were in primary/middle school with at least one follow-up during secondary/high school and a measure of sedentary behaviour at both (or all) points of assessment. Based on data from 11 articles (19 independent samples), tracking coefficients were typically in the range of 0.3 to 0.5 and relatively consistent across the different sedentary behaviours examined and durations of follow-up. Both screen-based sedentary behaviour and overall sedentary time increased during the school transition. Overall there was an increase of approximately 10–20 min per day per year in accelerometer-assessed sedentary time. Consistent with the broader age-related changes in behaviour observed during this period, sedentary behaviour increases during the transition from primary/middle to secondary/high school. Investigating features of the social and physical environment that might exacerbate or attenuate this trend would be a valuable next step
A global database of lake surface temperatures collected by in situ and satellite methods from 1985-2009

Global environmental change has influenced lake surface temperatures, a key driver of ecosystem structure and function. Recent studies have suggested significant warming of water temperatures in individual lakes across many different regions around the world. However, the spatial and temporal coherence associated with the magnitude of these trends remains unclear. Thus, a global data set of water temperature is required to understand and synthesize global, long-term trends in surface water temperatures of inland bodies of water. We assembled a database of summer lake surface temperatures for 291 lakes collected in situ and/or by satellites for the period 1985-2009. In addition, corresponding climatic drivers (air temperatures, solar radiation, and cloud cover) and geomorphometric characteristics (latitude, longitude, elevation, lake surface area, maximum depth, mean depth, and volume) that influence lake surface temperatures were compiled for each lake. This unique dataset offers an invaluable baseline perspective on global-scale lake thermal conditions as environmental change continues.Sapna Sharma … Justin Brookes … Anna Rigosi et. al
Search for new phenomena in photon+jet events collected in proton-proton collisions at root s = 8 TeV with the ATLAS detector

Available online 14 December 2013This Letter describes a model-independent search for the production of new resonances in photon + jet ( ) events using 20 fb -1 of proton-proton LHC data recorded with the ATLAS detector at a centre-of-mass energy of . The mass distribution is compared to a 24 Physics Letters B Vol. xx (2013) xx background model fit from data; no significant deviation from the background-only hypothesis is found. Limits are set at 95% credibility level on generic Gaussian-shaped signals and two benchmark phenomena beyond the Standard Model: non-thermal quantum black holes and excited quarks. Non-thermal quantum black holes are excluded below masses of 4.6 TeV and excited quarks are excluded below masses of 3.5 TeV.G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (ATLAS Collaboration
Early growth characteristics and the risk of reduced lung function and asthma : A meta-analysis of 25,000 children

Disclosure of potential conflict of interest: I. Anessi-Maesano has received a grant from the FP7 MeDALL project (Mechanisms of the Development of ALLergy, FP7 no. 261357) and has board memberships with the European Respiratory Journal, Clinical and Experimental Allergy, the International Journal of Tuberculosis and Lung Disease, BMC Public Health, the European Respiratory Review, Multidisciplinary Respiratory Medicine, Therapeutic Advances in Respiratory Disease, Multidisciplinary Review Frontiers in Medicine, and La lettre du pneumologue. S. H. Arshad has received grants from the National Institutes of Health (NIH) and the Medical Research Council and has consultant arrangements with Merck & Co. U. Frey and A. Schmidt have received grants from the Swiss National Science Foundation. A. J. Henderson has received grants from the Medical Research Council and the Wellcome Trust. H. M. Inskip has received grants from the UK Medical Research Council, the British Heart Foundation, Asthma Research UK, the British Lung Foundation, the Food Standards Agency, and the Dunhill Medical Trust; is deputy chair of a grant-funding board for the UK Medical Research Council; and has her employment funded by the Medical Research Council. S. Lau has received grants from the German Research Foundation, Allergopharma, and Symbiopharma and has consultant arrangements with Merck. K. C. Pike has received grants from the Food Standards Agency and the British Lung Foundation. The rest of the authors declare that they have no relevant conflicts of interest.Peer reviewedPostprin
The politics of the digital single market:Culture vs. competition vs. copyright

This paper examines the implications for European music culture of the European Union’s Digital Single Market strategy. It focuses on the regulatory framework being created for the management of copyright policy, and in particular the role played by Collective Management Organisations (or Collecting Societies). One of the many new opportunities created by digitalization has been the music streaming services. These depend on consumers being able to access music wherever they are, but such a system runs counter to the management of rights on a national basis and through collecting organisations who act as monopolies within their own territories. The result has been ‘geo-blocking’. The EU has attempted to resolve this problem in a variety of ways, most recently in a Directive designed to reform the CMOs. In this paper, we document these various efforts, showing them to be motivated by a deep-seated and persisting belief in the capacity of ‘competition’ to resolve problems that, we argue, actually lie elsewhere - in copyright policy itself. The result is that the EU’s intervention fails to address its core concern and threatens the diversity of European music culture by rewarding those who are already commercially successful
Optimal run-and-tumble–based transportation of a Janus particle with active steering

Although making artificial micrometric swimmers has been made possible by using various propulsion mechanisms, guiding their motion in the presence of thermal fluctuations still remains a great challenge. Such a task is essential in biological systems, which present a number of intriguing solutions that are robust against noisy environmental conditions as well as variability in individual genetic makeup. Using synthetic Janus particles driven by an electric field, we present a feedback-based particle-guiding method quite analogous to the “run-and-tumbling” behavior of Escherichia coli but with a deterministic steering in the tumbling phase: the particle is set to the run state when its orientation vector aligns with the target, whereas the transition to the “steering” state is triggered when it exceeds a tolerance angle α. The active and deterministic reorientation of the particle is achieved by a characteristic rotational motion that can be switched on and off by modulating the ac frequency of the electric field, which is reported in this work. Relying on numerical simulations and analytical results, we show that this feedback algorithm can be optimized by tuning the tolerance angle α. The optimal resetting angle depends on signal to noise ratio in the steering state, and it is shown in the experiment. The proposed method is simple and robust for targeting, despite variability in self-propelling speeds and angular velocities of individual particles.UTokyo Research掲載「ミクロ粒子の遠隔制御」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/controlling-microparticles-from-afar.htmlUTokyo Research "Controlling microparticles from afar" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/controlling-microparticles-from-afar.htm
Radio continuum and X-ray emission from the most extreme far-IR-excess galaxy NGC 1377: An extremely obscured AGN revealed

Context. Galaxies which strongly deviate from the radio-far infrared (FIR) correlation are of great importance for studies of galaxy evolution as they may be tracing early, short-lived stages of starbursts and active galactic nuclei (AGNs). The most extreme FIR-excess galaxy NGC 1377 has long been interpreted as a young dusty starburst, but millimeter observations of CO lines revealed a powerful collimated molecular outflow which cannot be explained by star formation alone. Aims. This paper aims to determine the nature of the energy source in the nucleus of NGC 1377 and to study the driving mechanism of the collimated CO outflow. Methods. We present new radio observations of NGC 1377 at 1.5 and 10 GHz obtained with the Jansky Very Large Array (JVLA) and Chandra X-ray observations. The observations are compared to synthetic starburst models to constrain the properties of the central energy source. Results. We obtained the first detection of the cm radio continuum and X-ray emission in NGC 1377. We found that the radio emission is distributed in two components, one on the nucleus and another offset by 4″5 to the south-west. We confirm the extreme FIR-excess of the galaxy, with a q ≃ 4.2, which deviates by more than 7σ from the radio-FIR correlation. Soft X-ray emission is detected on the off-nucleus component. From the radio emission we estimated for a young (<10 Myr) starburst a star formation rate (SFR) of <0.1 M yr. Such a SFR is not sufficient to power the observed IR luminosity and to drive the CO outflow. Conclusions. We found that a young starburst cannot reproduce all the observed properties of the nucleus of NGC 1377. We suggest that the galaxy may be harboring a radio-quiet, obscured AGN of 10M, accreting at near-Eddington rates. We speculate that the off-nucleus component may be tracing an hot-spot in the AGN jet.  © 2016 ESO.F.C. acknowledges support from Swedish National Science Council grant 637-2013-7261. A.L. acknowledges support from the ERC Advanced Grant >FEEDBACK>. R.H.I., M.A.P.T. and A.A. acknowledge support from the Spanish MINECO through grants AYA2012-38491-C02-02 and AYA2015-63939-C2-1-PPeer Reviewe
Ce(Mn,Fe)O2–(La,Sr)(Fe,Mn)O3 composite as an active cathode for electrochemical reduction of CO2 in proton conducting solid oxide cells

AbstractA solid oxide electrolysis cell concept for reducing CO2 to CO was studied using a proton conducting mixed oxide — BaCe0.7Zr0.1Y0.1Yb0.06Zn0.04O3−δ (BCZYYZ) as an electrolyte. The oxide composite mixture: Ce0.6Mn0.3Fe0.1O2–La0.6Sr0.4Fe0.9Mn0.1O3 (12.5–87.5wt.%) was examined as enhancing catalyst electrode for CO2 reduction and proton oxidation reaction on the cathode side for avoiding coke formation. Here we demonstrate the successful electrochemical reduction of CO2 in proton conducting SOECs. During electrochemical reduction of CO2 at 700°C, current densities as high as 0.5A/cm2 and 1A/cm2 at 1.3V and 2.2V respectively, were withdrawn even though the cell employed a 400μm thick BCZYYZ electrolyte support
The Relationship between Learning Styles, Creative Thinking Performance and Multimedia Learning Materials

AbstractThis paper reports the findings of a research which looks at the influence of learning styles on engineering students’ creative thinking performance when multimedia learning tool is used. Taking into consideration the ubiquity of technology-based educational tool and its possible impact on students’ creative performance, a multimedia learning tool was developed for a group of mechanical engineering students based on a specific subject. The purpose was to investigate the relationship between students’ learning styles and their creative thinking after using the multimedia learning tool. The Torrance Test of Creative Thinking (TTCT) was used as the main instrument to measure students’ creative thinking before and after the multimedia learning tool was administered. The Index of Learning Style (ILS) was also used to identify students’ learning styles. The independent sample t- test and one-way analysis of variance were used to compare the TTCT scores with the learning styles dimensions. The findings indicate that active, reflective, intuitive and high visual students benefit creatively after using the multimedia learning tool
Ptf1a/Rbpj complex inhibits ganglion cell fate and drives the specification of all horizontal cell subtypes in the chick retina

AbstractDuring development, progenitor cells of the retina give rise to six principal classes of neurons and the Müller glial cells found within the adult retina. The pancreas transcription factor 1 subunit a (Ptf1a) encodes a basic-helix–loop–helix transcription factor necessary for the specification of horizontal cells and the majority of amacrine cell subtypes in the mouse retina. The Ptf1a-regulated genes and the regulation of Ptf1a activity by transcription cofactors during retinogenesis have been poorly investigated. Using a retrovirus-mediated gene transfer approach, we reported that Ptf1a was sufficient to promote the fates of amacrine and horizontal cells from retinal progenitors and inhibit retinal ganglion cell and photoreceptor differentiation in the chick retina. Both GABAergic H1 and non-GABAergic H3 horizontal cells were induced following the forced expression of Ptf1a. We describe Ptf1a as a strong, negative regulator of Atoh7 expression. Furthermore, the Rbpj-interacting domains of Ptf1a protein were required for its effects on cell fate specification. Together, these data provide a novel insight into the molecular basis of Ptf1a activity on early cell specification in the chick retina
Fetal brain development in chimpanzees versus humans

SummaryIt is argued that the extraordinary brain enlargement observed in humans is due to not only the human-specific pattern of postnatal brain development, but also to that of prenatal brain development [1,2]. However, the prenatal trajectory of brain development has not been explored in chimpanzees (Pan troglodytes), even though they are our closest living relatives. To address this lack of information, we tracked fetal development of the chimpanzee brain from approximately 14 to 34 weeks of gestation (just before birth) in utero using three-dimensional ultrasound imaging. The results were compared with those obtained for the human brain during approximately the same period. We found that the brain volume of chimpanzee fetuses was only half that of human fetuses at 16 weeks of gestation. Moreover, although the growth velocity of brain volume increased until approximately 22 weeks of gestation in both chimpanzees and humans, chimpanzee fetuses did not show the same accelerated increase in brain volume as human fetuses after that time. This suggests that maintenance of fast development of the human brain during intrauterine life has contributed to the remarkable brain enlargement observed in humans
Heavy Higgs resonances for the neutralino relic density in the Higgs decoupling limit of the CP-noninvariant minimal supersymmetric standard model

AbstractThe lightest neutralino is a compelling candidate to account for cold dark matter in the universe in supersymmetric theories with R-parity. In the CP-invariant theory, the neutralino relic density can be found in accord with recent WMAP data if neutralino annihilation in the early universe occurs via the s-channel A funnel. In contrast, in the CP-noninvariant theory two heavy neutral Higgs bosons can contribute to the Higgs funnel mechanism significantly due to a CP-violating complex mixing between two heavy states, in particular, when they are almost degenerate. With a simple analytic and numerical analysis, we demonstrate that the CP-violating Higgs mixing can modify the profile of the neutralino relic density considerably in the heavy Higgs funnel with the neutralino mass close to half of the heavy Higgs masses
Identification of novel markers for uncomplicated lower genital tract infections and upper genital tract pathology due to Chlamydia trachomatis

SummaryBackgroundUntreated Chlamydia trachomatis infections in women can result in disease sequelae such as salpingitis and pelvic inflammatory disease (PID), ultimately culminating in tubal occlusion and infertility. Whilst nucleic acid amplification tests can effectively diagnose uncomplicated lower genital tract (LGT) infections, they are not suitable for diagnosing upper genital tract (UGT) pathological sequelae. As a consequence, this study aimed to identify serological markers that can, with a high degree of sensitivity and specificity, discriminate between LGT infections and UGT pathology.MethodsPlasma was collected from 73 women with a history of LGT infection, UGT pathology due to C. trachomatis, or no serological evidence of C. trachomatis infection. Western blotting was used to analyze antibody reactivity against extracted chlamydial proteins. Sensitivity and specificity of differential markers were also calculated.ResultsFour antigens (CT157, CT423, CT727 and CT396) were identified and found to be capable of discriminating between the infection and disease sequelae state. Sensitivity and specificity calculations showed that our assay for diagnosing LGT infection had a sensitivity of 75% and specificity of 76%, whilst the assay for identifying UGT pathology demonstrated 80% sensitivity and 86% specificity.ConclusionsThe use of these assays could potentially facilitate earlier diagnoses in women suffering UGT pathology due to C. trachomatis
Z′ studies at the LHC: an update

AbstractWe reanalyse the potential of the LHC to discover new Z′ gauge bosons and to discriminate between various theoretical models. Using a fast LHC detector simulation, we have investigated how well the characteristics of Z′ bosons from different models can be measured. For this analysis we have combined the information coming from the cross section measurement, which provides also the Z′ mass and total width, the forward–backward charge asymmetries on- and off-peak, and the Z′ rapidity distribution, which is sensitive to its uū and dd̄ couplings. We confirm that new Z′ bosons can be observed in the process pp→Z′→ℓ+ℓ−, up to masses of about 5 TeV for an integrated luminosity of 100 fb−1. The off- and on-resonance peak forward–backward charge asymmetries AFBℓ show that interesting statistical accuracies can be obtained up to Z′ masses of the order of 2 TeV. We then show how the different experimental observables allow for a diagnosis of the Z′ boson and the distinction between the various considered models
Residual Z2×Z2 symmetries and lepton mixing

AbstractWe consider two novel scenarios of residual symmetries of the lepton mass matrices. Firstly we assume a Z2×Z2 symmetry Gℓ for the charged-lepton mass matrix and a Z2 symmetry Gν for the light neutrino mass matrix. With this setting, the moduli of the elements of one column of the lepton mixing matrix are fixed up to a reordering. One may interchange the roles of Gℓ and Gν in this scenario, thereby constraining a row, instead of a column, of the mixing matrix. Secondly we assume a residual symmetry group Gℓ≅Zm (m>2) which is generated by a matrix with a doubly-degenerate eigenvalue. Then, with Gν≅Z2×Z2 the moduli of the elements of a row of the lepton mixing matrix get fixed. Using the library of small groups we have performed a search for groups which may embed Gℓ and Gν in each of these two scenarios. We have found only two phenomenologically viable possibilities, one of them constraining a column and the other one a row of the mixing matrix