bluuebunny/crossref_metadata_2025_split huggingface dataset:
Parents' use of harsh punishment and young children's behaviour and achievement: a longitudinal study of Jamaican children with conduct problems
Authors: Baker-Henningham H. , Francis T. 
Published: October 2018

Introduction.Harsh punishment by parents is common in low- and middle-income countries (LMIC), yet there is limited evidence from LMIC of the effects of harsh punishment on child outcomes.Methods.A longitudinal, prospective study was conducted with children with conduct problems to examine the associations between parents’ use of harsh punishment during the preschool years on child behaviour and school achievement in grade one of primary school. As part of an efficacy trial in 24 preschools, 225 children with the highest level of teacher-reported conduct problems were evaluated and their parents reported on how often they used harsh punishment. Outcome measures in grade one included child conduct problems by independent observation, teacher and parent report, child social skills by teacher and parent report, direct tests of children's academic achievement and language skills, and tester ratings of child attention and impulse control.Results.Children had a mean age of 6.92 years and 61% were boys. All parents reported using harsh punishment. After controlling for child age and sex, socio-economic status, parents’ involvement with child and maternal education, frequency of harsh punishment was associated with growth in child conduct problems by independent classroom observations (p = 0.037), parent (p = 0.018) and teacher (p = 0.044) report, a reduction in child social skills by teacher (p = 0.024) and parent (p = 0.014) report and poorer attention during the test session (p = 0.049).Conclusion.The associations between frequency of parents’ use of harsh punishment with their preschoolers with conduct problems and later child behaviour indicate a need to train parents in non-violent behaviour management.
Nonlinear travelling internal waves with piecewise-linear shear profiles
Authors: Oliveras K. L. , Curtis C. W. 
Published: October 2018

In this work, we study the nonlinear travelling waves in density stratified fluids with piecewise-linear shear currents. Beginning with the formulation of the water-wave problem due to Ablowitz et al. (J. Fluid Mech., vol. 562, 2006, pp. 313–343), we extend the work of Ashton & Fokas (J. Fluid Mech., vol. 689, 2011, pp. 129–148) and Haut & Ablowitz (J. Fluid Mech., vol. 631, 2009, pp. 375–396) to examine the interface between two fluids of differing densities and varying linear shear. We derive a systems of equations depending only on variables at the interface, and numerically solve for periodic travelling wave solutions using numerical continuation. Here, we consider only branches which bifurcate from solutions where there is no slip in the tangential velocity at the interface for the trivial flow. The spectral stability of these solutions is then determined using a numerical Fourier–Floquet technique. We find that the strength of the linear shear in each fluid impacts the stability of the corresponding travelling wave solutions. Specifically, opposing shears may amplify or suppress instabilities.
Genetic risk for schizophrenia is associated with substance use in emerging adulthood: an event-level polygenic prediction model
Authors: Mallard Travis T. , Harden K. Paige , Fromme Kim 
Published: October 2018

AbstractBackgroundEmerging adulthood is a peak period of risk for alcohol and illicit drug use. Recent advances in psychiatric genetics suggest that the co-occurrence of substance use and psychopathology arises, in part, from a shared genetic etiology. We sought to extend this research by investigating the influence of genetic risk for schizophrenia on trajectories of four substance use behaviors as they occurred across emerging adulthood.MethodYoung adult participants of non-Hispanic European descent provided DNA samples and completed daily reports of substance use for 1 month per year across 4 years (N = 30 085 observations of N = 342 participants). A schizophrenia polygenic score was included in two-level hierarchical linear models designed to test associations between genetic risk for schizophrenia, participant age, and four substance use phenotypes.ResultsParticipants with a greater schizophrenia polygenic score experienced greater age-related increases in the likelihood of using substances across emerging adulthood (p < 0.005). Additionally, our results suggest that the polygenic score was positively associated with participants’ overall likelihood to engage in illicit drug use but not alcohol-related substance use.ConclusionsThis study used a novel combination of polygenic prediction and intensive longitudinal methods to characterize the influence of genetic risk for schizophrenia on patterns of age-related change in substance use across emerging adulthood. Results suggest that genetic risk for schizophrenia has developmentally specific effects on substance use behaviors in a non-clinical population of young adults.
Opinion paper: poor response to treatment of depression in people in high occupational levels
Authors: Mandelli Laura , Serretti Alessandro , Porcelli Stefano , Souery Daniel , Mendlewicz Julien , Kasper Siegfried , Montgomery Stuart , Zohar Joseph 
Published: October 2018

AbstractThe working environment may have a significant effect on response to treatment of depression and this issue has not yet been sufficiently addressed in the scientific literature. There is evidence showing that being engaged in high-level positions can be an obstacle to the success of treatment. This article discusses the few evidence in the literature and some of the possible mechanisms involved. Specific personality attributes and difficulties in adapting to depression may delay access to care and may also reduce treatment compliance. The presence of stress in jobs that require high cognitive function and lack of social support may be elements that hinder the recovery process. Residual symptoms that impact on cognitive functions may undermine adherence to treatment and adversely affect the response. The implications of these issues are potentially relevant for clinical practice in the treatment of depression and for future research.
Affective and interpersonal psychopathic traits associated with reduced corpus callosum volume among male inmates – RETRACTED
Authors: Anderson Nathaniel E. , Maurer J. Michael , Nyalakanti Prashanth , Harenski Keith A. , Harenski Carla L. , Koenigs Michael R. , Decety Jean , Kiehl Kent A. 
Published: October 2018

AbstractBackgroundPsychopathy is a personality disorder associated with severe emotional and interpersonal consequences and persistent antisocial behavior. Neurobiological models of psychopathy emphasize impairments in emotional processing, attention, and integration of information across large-scale neural networks in the brain. One of the largest integrative hubs in the brain is the corpus callosum (CC) – a large white matter structure that connects the two cerebral hemispheres.MethodThe current study examines CC volume, measured via Freesurfer parcellation, in a large sample (n = 495) of incarcerated men who were assessed for psychopathic traits using the Hare Psychopathy Checklist-Revised (PCL-R).ResultsPsychopathy was associated with reduced volume across all five sub-regions of the CC. These relationships were primarily driven by the affective/interpersonal elements of psychopathy (PCL-R Factor 1), as no significant associations were found between the CC and the lifestyle/antisocial traits of psychopathy. The observed effects were not attributable to differences in substance use severity, age, IQ, or total brain volume.ConclusionsThese findings align with suggestions that core psychopathic traits may be fostered by reduced integrative capacity across large-scale networks in the brain.
Resilience, Agency and Coping with Hardship: Evidence from Europe during the Great Recession
Authors: DAGDEVIREN HULYA , DONOGHUE MATTHEW 
Published: October 2018

AbstractThis paper aims to contribute to the growing literature on resilience by focusing on coping with hardship during the Great Recession, drawing upon primary data gathered through household and key informant interviews in nine European countries. As the resilience approach highlights agency, the paper examines the nature of household responses to hardship during this period on the basis of the ‘structure-agency problem’. An important contribution of this paper is to identify different forms of agency and discuss their implications. More specifically, we conceptualise three different types of agency in coping with hardship: absorptive, adaptive and transformative. Analysis of the findings indicates that structural constraints remain prominent. Most coping mechanisms fall under the category of absorptive and adaptive agency characterised here as burden-bearing actions that ‘conform’ to changing circumstances rather than shaping those circumstances.
Measurement of runaway electron beam current in nanosecond-pulse discharges by a Faraday cup
Authors: Zhang Cheng , Liu Zehui , Qiu Jintao , Bai Han , Kong Fei , Shao Tao 
Published: October 2018

AbstractMeasurement of runaway electron beam (REB) is essential to investigate behavior of runaway electrons produced in nanosecond-pulse gas discharge. A Faraday cup is designed to measure the REB current in nanosecond-pulse discharge when the applied dV/dtis 75 kV/ns. The Faraday cup considers the impendence match with the oscilloscope and the design of the receiving part. The experimental results show that the measured REB current has a rise time of 348 ps and a full width at half maximum of 510 ps. The comparison of the measurement results by the Faraday cup and a REB collector confirm that the Faraday cup is able to measure REB current in nanosecond-pulse discharge. Furthermore, consecutive waveforms of the REB currents show stable results by using the designed Faraday cup. In addition, effects of the interelectrode gap, gas pressure, and cathode material on the REB current are investigated by the designed Faraday cup, and the measurement results provide characteristics of REB current under different conditions. The REB current decreases when the gap spacing or gas pressure increases. REB current increases with the cathode diameter. It indicates that the high-energy electrons are generated not only at the edge of the cathode but also on the side surface of the cathode.
Declining hepatitis E virus antibody prevalence in Phnom Penh, Cambodia during 1996–2017
Authors: Nouhin J. , Madec Y. , Prak S. , Ork M. , Kerleguer A. , Froehlich Y. , Pavio N. , Rouet F. 
Published: October 2018

AbstractHepatitis E virus (HEV) infection is endemic in Cambodia. However, little relevant data were available and there is no clue if HEV is an emerging or decreasing pathogen in that setting. The aim of our study was to describe temporal trends of anti-HEV IgG and IgM prevalences during the last two decades (1996–2017) in the context of population growth and urbanisation in Cambodia. A total of 2004 human plasma samples collected between 1996 and 2017 were tested for anti-HEV IgG and IgM using the commercial Wantai anti-HEV assays. Overall, the prevalences of anti-HEV IgG and IgM were 41.1% and 2.7%, respectively. Analysis by calendar period showed a decreasing trend of anti-HEV IgG prevalence over the last 21 years. After age- and gender-standardisation, the anti-HEV IgG prevalence rates decreased from 61.3% during the 1996–2000 period to 32.3% during the 2016–2017 period, but no trends were observed for anti-HEV IgM rates, which fluctuated around the overall one. In conclusion, our results suggest that HEV is not an emerging pathogen, but rather seems to circulate less in Cambodia, in particular, in Phnom Penh, since the prevalence of anti-HEV IgG has been significantly decreased during the past two decades.
Maternally inherited rRNA triggers de novo nucleolus formation in porcine embryos
Authors: Morovic Martin , Østrup Olga , Strejcek Frantisek , Benc Michal , Murin Matej , Jedlickova Katarina , Bartkova Alexandra , Lucas-Hahn Andrea , Pendovski Lazo , Laurincik Jozef 
Published: October 2018

SummaryThe present study examines the role of RNA polymerase I (RPI)-mediated transcription, maternally inherited rRNA and nucleolar proteins in the resumption of fibrillogranular nucleoli during embryonic genome activation (EGA) in porcine embryos. Late 4-cell embryos were incubated in the absence (control) or presence of actinomycin D (AD) (0.2 μg/ml for inhibition of RPI; 2.0 μg/ml for inhibition of total transcription) and late 2-cell embryos were cultured to the late 4-cell stage with 0.2 μg/ml AD to block EGA. Embryos were then processed for reverse-transcriptase polymerase chain reaction (RT-PCR), and for autoradiography (ARG), transmission electron microscopy (TEM), fluorescence in situ hybridization (FISH), silver staining and immunofluorescence (for RPI). Embryos in the control group displayed extranucleolar and intranucleolar ARG labelling, and exhibited de novo synthesis of rRNA and reticulated functional nucleoli. Nucleolar proteins were located in large foci. After RPI inhibition, nucleolar precursors transformed into segregated fibrillogranular structures, however no fibrillar centres were observed. The localization of rDNA and clusters of rRNA were detected in 57.1% immunoprecipitated (IP) analyzed nucleoli and dispersed RPI; 30.5% of nuclei showed large deposits of nucleolar proteins. Embryos from the AD-2.0 group did not display any transcriptional activity. Nucleolar formation was completely blocked, however 39.4% of nuclei showed rRNA clusters; 85.7% of nuclei were co-localized with nucleolar proteins. Long-term transcriptional inhibition resulted in the lack of ARG and RPI labelling; 40% of analyzed nuclei displayed the accumulation of rRNA molecules into large foci. In conclusion, maternally inherited rRNA co-localized with rDNA and nucleolar proteins can initiate a partial nucleolar assembly, resulting in the formation of fibrilogranular structures independently on activation of RPI-mediated transcription.
Voluntary policies on checkout foods and healthfulness of foods displayed at, or near, supermarket checkout areas: a cross-sectional survey
Authors: Lam Chi Ching Vivian , Ejlerskov Katrine T , White Martin , Adams Jean 
Published: October 2018

AbstractObjectiveTo determine if voluntary policies on supermarket checkout foods are associated with a difference in the healthfulness of foods displayed at, or near, supermarket checkout areas.DesignCross-sectional survey of foods at, or near, supermarket checkouts categorised as less healthy or not according to the Food Standards Agency’s Nutrient Profiling Model.SettingOne city in Eastern England (population about 125 000).SubjectsAll stores in nine supermarket groups open for business in June–July 2017 in the study city. Supermarket checkout food policies were categorised as clear and consistent, vague or inconsistent, or none.ResultsIn thirty-three stores, 11 434 checkout food exposures were recorded, of which 8010 (70·1 %) were less healthy; and 2558 foods in areas near checkouts, of which 1769 (69·2 %) were less healthy. After adjusting for a marker of store size, the odds of a checkout food exposure being ‘less healthy’ was lower in stores with vague or inconsistent checkout policies (OR=0·63; 95 % CI 0·49, 0·80) and in stores with clear and consistent checkout policies (OR=0·33; 95 % CI 0·24, 0·45), compared with no policy. There was no difference in the odds of foods near, but not at, checkouts being less healthy according to checkout food policy.ConclusionsSupermarket checkout food policies were associated with lower odds of checkout foods but not foods near, but not at, checkouts being less healthy. Further research is required to explore impacts on purchasing and consumption.
Upper Jurassic, Upper Cretaceous and Palaeocene conifer woods from Mexico
Authors: Ríos-Santos César , Cevallos-Ferriz Sergio R. S. 
Published: October 2018

ABSTRACTAlthough there are reports of permineralised woods in Mesozoic and Cenozoic strata in Mexico, there are few palaeobotanical studies based on coniferous stems. Four taxa of fossil wood from three localities in Mexico are described at the anatomical level and identified taxonomically based on detailed comparisons with woods of extant and fossil taxa. Agathoxylon gilii sp. nov. and A. jericonse sp. nov. are determined from the Todos Santos Formation (Upper Jurassic), in Chiapas; A. parrensis sp. nov. is described from the Las Encinas Formation (Palaeocene) in Coahuila; and Taxodioxylon cabullensis sp. nov. corresponds with material from the Packard Shale Formation in Sonora. Dominance of Araucariaceae and Cupressaceae in this region during the Mesozoic and early Cenozoic is further supported by leaf records, but these materials may also represent other taxa, like Cheirolepidaceae, which may have araucarioid secondary xylem. Records of Brachyphyllum and/or Pagiophyllum, which may represent araucarioid or cheirolepidaceous taxa, and different cupressaceous leaves, have been collected in rocks of the same period in nearby formations. At present, the amalgamation of isolated organs to form one plant is uncertain and, thus, there is an open challenge to reconstruct the plants and better understand these extinct communities. The new fossil taxa will add to the diversity of extinct plants and conifer communities during the Mesozoic and early Cenozoic in low-latitude North America.
Low‐Frequency Earthquakes and Pore Pressure Transients in Subduction Zones
Authors: Shapiro Nikolai M. , Campillo Michel , Kaminski Edouard , Vilotte Jean‐Pierre , Jaupart Claude 
Published: October 2018

AbstractLow‐frequency earthquakes (LFEs) have been observed in subduction zones and some major tectonic faults and may well be the most important constituents of tectonic tremors. In subduction zones, they were initially attributed to fluids released by dehydration reactions in downgoing slabs. Their seismic radiation pattern, however, is consistent with shear slip on the subduction interface, and this rapidly became the favored model. Recent studies indicate that the source duration of LFEs does not scale with magnitude, which can hardly be explained by shear rupture. We revisit the characteristics of LFE events in subduction zones as retrieved from local seismic arrays. We demonstrate that they can be explained equally well by forces acting in the direction of fluid motion. Such forces may be generated by a fast local pressure variations associated with unsteady fluid motion. The amount of fluid required for LFE activity is consistent with dehydration reaction rates.
New Capabilities for Prediction of High‐Latitude Ionospheric Scintillation: A Novel Approach With Machine Learning
Authors: McGranaghan Ryan M. , Mannucci Anthony J. , Wilson Brian , Mattmann Chris A , Chadwick Richard 
Published: October 2018

AbstractAs societal dependence on transionospheric radio signals grows, space weather impact on these signals becomes increasingly important yet our understanding of the effects remains inadequate. This challenge is particularly acute at high latitudes where the effects of space weather are most direct and no reliable predictive capability exists. We take advantage of a large volume of data from Global Navigation Satellite Systems (GNSS) signals, increasingly sophisticated tools for data‐driven discovery, and a machine learning algorithm known as the support vector machine (SVM) to develop a novel predictive model for high‐latitude ionospheric phase scintillation. This work, to our knowledge, represents the first time an SVM model has been created to predict high‐latitude phase scintillation. We use the true skill score to evaluate the SVM model and to establish a benchmark for high‐latitude ionospheric phase scintillation prediction. The SVM model significantly outperforms persistence (i.e., current and future scintillation are identical), doubling the predictive skill according to the true skill score for a 1‐hr lead time. For a 3‐hr lead time, persistence is comparable to a random chance prediction, suggesting that the memory of the ionosphere in terms of high‐latitude plasma irregularities is on the order of, or shorter than, a few hours. The SVM model predictive skill only slightly decreases between the 1‐ and 3‐hr predictive tasks, pointing to the potential of this method. Our findings can serve as a foundation on which to evaluate future predictive models, a critical development toward the resolution of space weather impact on transionospheric radio signals.
Non-Invasive Prediction of High-Risk Varices in Patients with Primary Biliary Cholangitis and Primary Sclerosing Cholangitis
Authors: Moctezuma-Velazquez Carlos , Saffioti Francesca , Tasayco-Huaman Stephanie , Casu Stefania , Mason Andrew , Roccarina Davide , Vargas Victor , Nilsson Jan-Erick , Tsochatzis Emmanuel , Augustin Salvador , Montano-Loza Aldo J. , Berzigotti Annalisa , Thorburn Douglas , Genesca Joan , Abraldes Juan Gonzalez 
Published: October 2018

BACKGROUND:
Baveno-VI guidelines recommend that patients with compensated cirrhosis with liver stiffness by transient elastography (LSM-TE) <20 kPa and platelets >150,000/mm3 do not need an esophagogastroduodenoscopy (EGD) to screen for varices, since the risk of having varices needing treatment (VNT) is <5%. It remains uncertain if this tool can be used in patients with cholestatic liver diseases (ChLDs): primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC). These patients may have a pre-sinusoidal component of portal hypertension that could affect the performance of this rule. In this study we evaluated the performance of Baveno-VI, expanded Baveno-VI (LSM-TE <25 kPa and platelets >110,000/mm3), and other criteria in predicting the absence of VNT.

METHODS:
This was a multicenter cross-sectional study in four referral hospitals. We retrospectively analyzed data from 227 patients with compensated advanced chronic liver disease (cACLD) due to PBC (n = 147) and PSC (n = 80) that had paired EGD and LSM-TE. We calculated false negative rate (FNR) and number of saved endoscopies for each prediction rule.

RESULTS:
Prevalence of VNT was 13%. Baveno-VI criteria had a 0% FNR in PBC and PSC, saving 39 and 30% of EGDs, respectively. In PBC the other LSM-TE-based criteria resulted in FNRs >5%. In PSC the expanded Baveno criteria had an adequate performance. In both conditions LSM-TE-independent criteria resulted in an acceptable FNR but saved less EGDs.

CONCLUSIONS:
Baveno-VI criteria can be applied in patients with cACLD due to ChLDs, which would result in saving 30–40% of EGDs. Expanded criteria in PBC would lead to FNRs >5%.