405 research outputs found

    Preschoolers prefer to learn causal information

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    Young children, in general, appear to have a strong drive to explore the environment in ways that reveal its underlying causal structure. But are they really attuned specifically to casual information in this quest for understanding, or do they show equal interest in other types of non-obvious information about the world? To answer this question, we introduced 20 three-year-old children to two puppets who were anxious to tell the child about a set of novel artifacts and animals. One puppet consistently described causal properties of the items while the other puppet consistently described carefully matched non-causal properties of the same items. After a familiarization period in which children learned which type of information to expect from each informant, children were given the opportunity to choose which they wanted to hear describe each of eight pictured test items. On average, children chose to hear from the informant that provided causal descriptions on 72% of the trials. This preference for causal information has important implications for explaining the role of conceptual information in supporting early learning and may suggest means for maximizing interest and motivation in young children

    Collective Identity and Careers in a White Nationalist Forum

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    The career is a sociological concept which explores engagement with a community over time. It has largely been discussed in an abstract way, making it unclear how the concept can be operationalised. Using an inductive, multimethodological research design, this thesis applies sociological and linguistic methods to explore the career in the context of a white nationalist discussion forum, moving beyond teleological radicalisation arguments into a more nuanced understanding of how white nationalist collective identity and authority are developed and expressed. The study begins with a multiple correspondence analysis as a novel method of systematically reviewing existing literature on careers. Two defining characteristics of careers are identified. The temporal element, or amount of time dedicated to the community, is investigated with sequence analysis of over 120,000 user careers. The behavioural element, or the nature of individuals’ engagement with the community, is explored using quantitative and qualitative corpus linguistic techniques, characterising language within and across career types. Four career types are identified based on duration. These career types of different lengths are shown to correlate with the use of several linguistic features, including epistemic stance features and pronominal features. However, analysis of individual careers shows that usage of most of these features decreases across the career, suggesting that no features are specifically associated with the late stages of long careers. Instead, careers are marked by the accrual of symbolic capital in the form of new linguistic resources, allowing them to perform authority and collective identity in unconventional ways without facing negative social consequences. The thesis shows that, despite a level of individual variation, typical careers are identifiable on both the temporal and behavioural levels, thus offering a new perspective on this key debate in the literature. The value of the career and collective identity concepts for studies of online communities is demonstrated. Appendices available upon reques

    A multivariable analysis of the contribution of socioeconomic and environmental factors to blood culture Escherichia Coli resistant to fluoroquinolones in high- and middle-income countries

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    Background Antimicrobial resistance (AMR) is a public health concern. We wanted to determine if various environmental and socioeconomic variables as well as markers of antimicrobial use impacted on the level of AMR in countries of different income levels. Methods We performed cross-national univariate and multivariable analyses using the national proportion of quinolone-resistant Escherichia coli (QREC) in blood culture as the dependent variable. Access to safe water and sanitation, other socioeconomic variables, and human and animal antimicrobial consumption were analysed. Results In middle-income countries, unsafely managed sanitation, corruption and healthcare access and quality were significantly associated with the national proportion of blood culture QREC (%) in univariate analyses, whereas no variables remained significant in the multivariable models. For the multivariable high-income country model, corruption and healthcare access and quality were significantly associated with blood culture QREC (%) levels. For the model including all countries, human fluoroquinolone use, corruption level, livestock and crop production index were significantly associated with blood culture QREC (%) levels in the univariate analyses. Conclusion Corruption is a strong predictor of AMR, likely reflecting a multitude of socioeconomic factors. Sanitation quality contributed to increased blood culture QREC (%) levels in middle-income countries, although was not an independent factor, highlighting the need to also focus on infrastructure such as sanitation services in the context of AMR

    Cold Agglutinin Disease

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    Cold agglutinin disease (CAD) is an uncommon form of cold autoimmune hemolytic anemia (AIHA). It should be considered in the differential diagnosis of elderly patients with unexplained chronic anemia presenting with or without cold-induced symptoms in the extremities, such as the fingers, ears, and nose. CAD is a complement-mediated process which leads to intravascular and extravascular hemolysis. A stepwise approach to laboratory testing can help confirm the diagnosis. Nearly all cold agglutinins are positive for the C3d direct antiglobulin test (DAT). A negative C3d DAT should prompt investigation of a possible warm AIHA. Ninety percent of cold agglutinins are of the IgM immunoglobulin class and should have a titer of 1:64 or higher at 4°C. Distinction from a warm AIHA is important, as therapy differs for the two entities. Corticosteroids are not effective at treating CAD and should not be used as therapy in these patients. Approximately 45–60% of patients with CAD respond to rituximab monotherapy. Combination therapy of rituximab and fludarabine has been shown to be effective in up to 76% of patients; however, patients experience more mild side effects with this treatment. New anti-complement drugs, such as eculizumab and sutimlimab, are currently in phase-3 trials to determine their efficacy and safety in patients with CAD

    Improving Outcomes in Adults with Diabetes Through an Interprofessional Collaborative Practice Program

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    In 2014, the Midwest Interprofessional Practice, Education and Research Center partnered with a Federally Qualified Health Center (FQHC) to implement an interprofessional collaborative practice (IPCP) education program to improve the health of adult patients with diabetes and to improve practice efficiency. This partnership included integrating an interprofessional team of students with the practice team. Twenty-five students and 20 staff engaged in the IPCP program, which included completion of educational modules on IPCP and implementation of daily huddles, focus patient visits, phone calls, team-based case presentations, medication reconciliation, and student-led group diabetes education classes. This study used a sequential mixed methods design. Tools used for collecting data from staff and students included demographic forms, the Interdisciplinary Education Perception Scale (IEPS), the Entry-level Interprofessional Questionnaire, the Collaborative Practice Assessment Tool, and pre/post module knowledge tests completed at baseline and at one-year post implementation. Patient clinical indicators included HgbA1c, glucose, lipid panel laboratory assessments, body mass index, blood pressure, and documentation of annual dental, foot, and eye examinations. Practice efficiency was measured by the average number of patients seen per provider per hour. Both students and staff showed significant knowledge gains in IPCP on Team Dynamics and Tips for Behavioural Changes knowledge tests (p \u3c .05). Patients who had an HgbA1c of ≥ 7% significantly decreased their HgbA1c (p \u3c .05) and glucose (p \u3c .01). However, BMI and annual dental and eye examinations did not improve. Providers demonstrated an increase in the number of patients seen per hour. This IPCP intervention showed improvement in practice efficiencies and select patient outcomes in a family practice clinic

    LMDA Review, volume 8, issue 2 (sic)

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    Contents include: Editor\u27s Note, Notes from the President, Four Dramturgs for Dramaturgs, Jon Jory: An Editorial Response/Current Issues in Dramaturgy, and Anne Bogart: Dramaturging the Audience. Issue editors: Michael Bigelow Dixon, Amy Wegenerhttps://soundideas.pugetsound.edu/lmdareview/1017/thumbnail.jp

    Exosomes and HIV Gag bud from endosome-like domains of the T cell plasma membrane

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    Exosomes are secreted, single membrane organelles of ∼100 nm diameter. Their biogenesis is typically thought to occur in a two-step process involving (1) outward vesicle budding at limiting membranes of endosomes (outward = away from the cytoplasm), which generates intralumenal vesicles, followed by (2) endosome–plasma membrane fusion, which releases these internal vesicles into the extracellular milieu as exosomes. In this study, we present evidence that certain cells, including Jurkat T cells, possess discrete domains of plasma membrane that are enriched for exosomal and endosomal proteins, retain the endosomal property of outward vesicle budding, and serve as sites of immediate exosome biogenesis. It has been hypothesized that retroviruses utilize the exosome biogenesis pathway for the formation of infectious particles. In support of this, we find that Jurkat T cells direct the key budding factor of HIV, HIV Gag, to these endosome-like domains of plasma membrane and secrete HIV Gag from the cell in exosomes

    Developmental differences in the influence of phonological similarity on spoken word processing in Mandarin Chinese.

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    The developmental trajectory of spoken word recognition has been well established in Indo-European languages, but to date remains poorly characterized in Mandarin Chinese. In this study, typically developing children (N=17; mean age 10; 5) and adults (N=17; mean age 24) performed a picture-word matching task in Mandarin while we recorded ERPs. Mismatches diverged from expectations in different components of the Mandarin syllable; namely, word-initial phonemes, word-final phonemes, and tone. By comparing responses to different mismatch types, we uncovered evidence suggesting that both children and adults process words incrementally. However, we also observed key developmental differences in how subjects treated onset and rime mismatches. This was taken as evidence for a stronger influence of top-down processing on spoken word recognition in adults compared to children. This work therefore offers an important developmental component to theories of Mandarin spoken word recognition

    Вивчення кварк-глюонної плазми хіггсового механізму порушення електрослабкої симетрії

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    Вже багато років наукове оточення всього світу хвилює питання звідки бере свій початок стандартна теорія походження матерії
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