Closing the gap? Overcoming limitations in sociomaterial accounts of early literacy

This article uses a sociomaterial perspective to explore how deficit views of young children’s language and literacy are sustained and can be challenged. Foregrounding the notion of multiplicity, it considers how diverse sociomaterial relations work to uphold particular kinds of practice and particular arrangements of bodies and things over others. These relations may interfere with and interface with each other in different ways, sometimes sustaining but also potentially disrupting deficit discourses and practices. Our sociomaterial perspective is illustrated with a short vignette from a study of children and touchscreen tablets in an early years setting. An initial analysis is followed by a series of alternate and tentative tracings of other kinds of relations that play through those moments. The article contributes to debates about social inequality by troubling the certainties generated though deficit models of children’s literacy, whilst working proactively to envision and produce alternate possibilities that foreground the potentialities generated as people and other materials assemble together

Limiting the effects of earthquakes on gravitational-wave interferometers

Ground-based gravitational wave interferometers such as the Laser Interferometer Gravitational-wave Observatory (LIGO) are susceptible to high-magnitude teleseismic events, which can interrupt their operation in science mode and significantly reduce the duty cycle. It can take several hours for a detector to stabilize enough to return to its nominal state for scientific observations. The down time can be reduced if advance warning of impending shaking is received and the impact is suppressed in the isolation system with the goal of maintaining stable operation even at the expense of increased instrumental noise. Here we describe an early warning system for modern gravitational-wave observatories. The system relies on near real-time earthquake alerts provided by the U.S. Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA). Hypocenter and magnitude information is generally available in 5 to 20 minutes of a significant earthquake depending on its magnitude and location. The alerts are used to estimate arrival times and ground velocities at the gravitational-wave detectors. In general, 90\% of the predictions for ground-motion amplitude are within a factor of 5 of measured values. The error in both arrival time and ground-motion prediction introduced by using preliminary, rather than final, hypocenter and magnitude information is minimal. By using a machine learning algorithm, we develop a prediction model that calculates the probability that a given earthquake will prevent a detector from taking data. Our initial results indicate that by using detector control configuration changes, we could prevent interruption of operation from 40-100 earthquake events in a 6-month time-period

Les arbres hors forêt : vers une meilleure prise en compte

Pour favoriser une meilleure prise en compte des arbres hors forêt, cet ouvrage, constitué de deux parties, a voulu privilégier deux perspectives fort différentes mais absolument complémentaires, le niveau général et celui du particulier. Cette approche permet, non seulement de s'inscrire dans une réflexion itérative, mais également de créer le lien entre les réalités locales et les tendances générales. La première partie, Arbres hors forêt, facteur d'aménagement intégré de l'espace rural et urbain, tente de faire le point sur les connaissances accumulées relatives aux ressources des arbustes et arbres hors forêt; elle s'appuie sur la documentation existante et sur les travaux effectués dans des secteurs connexes. La seconde partie, Arbres hors forêt, objet d'un savoir partagé sous toutes les latitudes, examine ces ressources dans des situations concrètes et localisées à partir d'études de cas nationales. Dans l'une et l'autre de ces parties, on se penche sur les caractéristiques et les potentialités des arbres hors forêt, ressource dispersée, le plus souvent appropriée et cultivée, aux fonctions multiples, procurant de nombreux produits et des services envi ro n nementaux. Dans l'une et l'autre des perspectives, on apprécie leur contribution à l'économie locale, on entrevoit leur impact au niveau national et on pressent certains de leurs effets à l'échelle internationale. On constate alors que les arbres hors forêt sont bien connus des paysans, mal cernés par les gestionnaires et trop peu pris en compte dans les statistiques officielles et les aides au développement. Les caractéristiques majeures qui émergent à l'égard des arbres hors forêt dans l'un et l'autre des modes d'analyse est, d'une part, leur image imprécise faute d'éléments chiffrés et d'informations allant au-delà de leurs évidentes potentialités, malgré des efforts d'évaluation spécifiques et, d'autre part, leur poids indiscutable dans le combat pour la sécurité alimentaire, la lutte contre la pauvreté et la relève du défi de d'amélioration de l'environnement. (Résumé d'auteur

Accuracy of Emergency Medical Services Dispatcher and Crew Diagnosis of Stroke in Clinical Practice.

BACKGROUND: Accurate recognition of stroke symptoms by Emergency Medical Services (EMS) is necessary for timely care of acute stroke patients. We assessed the accuracy of stroke diagnosis by EMS in clinical practice in a major US city. METHODS AND RESULTS: Philadelphia Fire Department data were merged with data from a single comprehensive stroke center to identify patients diagnosed with stroke or TIA from 9/2009 to 10/2012. Sensitivity and positive predictive value (PPV) were calculated. Multivariable logistic regression identified variables associated with correct EMS diagnosis. There were 709 total cases, with 400 having a discharge diagnosis of stroke or TIA. EMS crew sensitivity was 57.5% and PPV was 69.1%. EMS crew identified 80.2% of strokes with National Institutes of Health Stroke Scale (NIHSS) ≥5 and symptom durationmodel, correct EMS crew diagnosis was positively associated with NIHSS (NIHSS 5-9, OR 2.62, 95% CI 1.41-4.89; NIHSS ≥10, OR 4.56, 95% CI 2.29-9.09) and weakness (OR 2.28, 95% CI 1.35-3.85), and negatively associated with symptom duration \u3e270 min (OR 0.41, 95% CI 0.25-0.68). EMS dispatchers identified 90 stroke cases that the EMS crew missed. EMS dispatcher or crew identified stroke with sensitivity of 80% and PPV of 50.9%, and EMS dispatcher or crew identified 90.5% of patients with NIHSS ≥5 and symptom duration \u3c6 \u3eh. CONCLUSION: Prehospital diagnosis of stroke has limited sensitivity, resulting in a high proportion of missed stroke cases. Dispatchers identified many strokes that EMS crews did not. Incorporating EMS dispatcher impression into regional protocols may maximize the effectiveness of hospital destination selection and pre-notification

Pervasive Rise of Small-scale Deforestation in Amazonia

Understanding forest loss patterns in Amazonia, the Earth’s largest rainforest region, is critical for effective forest conservation and management. Following the most detailed analysis to date, spanning the entire Amazon and extending over a 14-year period (2001–2014), we reveal significant shifts in deforestation dynamics of Amazonian forests. Firstly, hotspots of Amazonian forest loss are moving away from the southern Brazilian Amazon to Peru and Bolivia. Secondly, while the number of new large forest clearings (>50 ha) has declined significantly over time (46%), the number of new small clearings (<1 ha) increased by 34% between 2001–2007 and 2008–2014. Thirdly, we find that small-scale low-density forest loss expanded markedly in geographical extent during 2008–2014. This shift presents an important and alarming new challenge for forest conservation, despite reductions in overall deforestation rates

The genomes of two key bumblebee species with primitive eusocial organization

Background: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies. Bumblebees are also invaluable natural and agricultural pollinators, and there is widespread concern over recent population declines in some species. High-quality genomic data will inform key aspects of bumblebee biology, including susceptibility to implicated population viability threats. Results: We report the high quality draft genome sequences of Bombus terrestris and Bombus impatiens, two ecologically dominant bumblebees and widely utilized study species. Comparing these new genomes to those of the highly eusocial honeybee Apis mellifera and other Hymenoptera, we identify deeply conserved similarities, as well as novelties key to the biology of these organisms. Some honeybee genome features thought to underpin advanced eusociality are also present in bumblebees, indicating an earlier evolution in the bee lineage. Xenobiotic detoxification and immune genes are similarly depauperate in bumblebees and honeybees, and multiple categories of genes linked to social organization, including development and behavior, show high conservation. Key differences identified include a bias in bumblebee chemoreception towards gustation from olfaction, and striking differences in microRNAs, potentially responsible for gene regulation underlying social and other traits. Conclusions: These two bumblebee genomes provide a foundation for post-genomic research on these key pollinators and insect societies. Overall, gene repertoires suggest that the route to advanced eusociality in bees was mediated by many small changes in many genes and processes, and not by notable expansion or depauperation

The Effect of Shift Structure on Performance

The effect of shift structure on worker performance and productivity is of increasing interest to firms and regulatory bodies. Using approximately 743,000 emergency medical incidents attended by 2,381 paramedics in Mississippi, we evaluate the extent that paramedics\u27 performance toward the end of shifts is impacted by shift length. We find evidence that performance deteriorates toward the end of long shifts, and argue that fatigue is the mediating factor. Our calculations imply that such deterioration may result in a 0.76 percent increase in 30-day mortality. These findings have implications for workforce organization, calling attention to regulation designed to limit extended work hours

Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial

Background Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy

Couples’ dyadic coping in the context of child-related stressors: A systematic review across three decades

The relevance of dyadic coping (DC), a concept how couples cope with stressors together, has been established in different contexts (e.g., daily hassles, mental and physical health) and is related to different outcomes such as relationship satisfaction, relationship quality and stability, psychological well-being, and child behavior. The current systematic review aims at providing an integration of the field of research on couple’s DC with child-related stressors which are understood as demands that arise for couples due to becoming or being parents. DC and related search terms were used for the literature search in PsycINFO, Psyndex, and Medline. We included 55 publications (reporting empirical data on 6,779 couples in total) including quantitative, qualitative, and mixed-methods studies published between 1990 and 2020. We applied a narrative synthesis approach organizing the results around six identified areas of child-related stressors: pregnancy and transition to parenthood, parenting, child mental health, child disability, child chronic physical illness, and child death. Overall, results show the importance of DC for both individual and relationship functioning in the context of child-related stress. Surprisingly, effects of parental DC on child outcomes remained understudied, although the existing studies yield promising results for child adjustment. In conclusion, adapting a “we”-perspective, mutual understanding and support is of importance not only to overcome the stressor but also to grow together as a couple. As DC plays a significant role for couples to cope in a resilient way when facing child-related stressors it should be more promoted in couple- and family counseling and therapy