344 research outputs found
Ian Rankin and the ethics of crime fiction
Writer Ian Rankin has suggested that crime fiction should invoke a self-conscious interrogation of the dark underside of society, that readers should subsequently be drawn toward an ethical engagement with the world around them. The author considers the implications of this ethical potential with reference to Rankin's depictions of postdevolution Scotland
Research-based assessment affordances and constraints: Perceptions of physics faculty
To help faculty use research-based materials in a more significant way, we
learn about their perceived needs and desires and use this information to
suggest ways for the Physics Education Research community to address these
needs. When research-based resources are well aligned with the perceived needs
of faculty, faculty members will more readily take them up. We used
phenomenographic interviews of ordinary physics faculty and department chairs
to identify four families of issues that faculty have around research-based
assessments (RBA). First, many faculty are interested in using RBAs but have
practical needs around how to do so: how to find them, which ones there are,
and how to administer them. They want help addressing these needs. Second, at
the same time, many faculty think that RBAs are limited and don't measure many
of the things they care about, or aren't applicable in their classes. They want
assessments to measure skills, perceptions, and specific concepts. Third, many
faculty want to turn to communities of other faculty and experts to help them
interpret their assessment results and suggest other ways to do assessment.
They want to norm their assessment results by comparing to others and
interacting with faculty from other schools to learn about how they do
assessment. Fourth, many faculty consider their courses in the broader contexts
of accountability and their departments. They want help with assessment in
these broader contexts. We also discuss how faculty members role in their
department and type of institution influence their perceived wants and needs
around assessment.Comment: submitted to Physical Review Special Topics - Physics Education
Researc
An Intensity and Size Phase Space for Tropical Cyclone Structure and Evolution
Intensity and size are important to characterize a tropical cyclone (TC), but there are a wide variety of ways that both metrics are defined. TC intensity can refer to either a maximum sustained wind speed at some height level or central surface pressure minimum, and TC size may refer to the radius of maximum wind, the radius of gale force wind, or be based on other criteria. While different definitions of TC intensity and size have useful applications, there are varying amounts of redundant information and covariations between some size and intensity variables that make investigating physical relationships more challenging. In this study, we use aircraft observations and Best Track information to calculate an empirical orthogonal function analysis that yields new, orthogonal metrics of TC intensity and size. The new, linearly independent metrics reduce a seven-dimensional space of co-varying parameters into a simplified, two-dimensional phase space in which key TC structural changes can be visualized and historically contextualized. Additionally, our analysis introduces a new parameter that is a simplified measure of the wind decay outside the radius of maximum tangential velocity. We show that this decay parameter is nearly orthogonal to the new intensity and size metrics and is useful for identifying TC maturity. We demonstrate the utility of the new phase space by first comparing the structural evolution of the large Hurricane Rita (2005) and small Hurricane Charley (2004) using observations, as well as comparing two modeling simulations of Hurricane Rita with different initial conditions in the phase space.publishedVersio
Rejecting the knitted claymore : the challenge to cultural nationalism in Scottish literary magazines of the 1960s and 1970s
The late 1950s and early 1960s witnessed a dramatic moment of change in the history and context of small magazines within Scotland and Britain as a whole. In Scotland, some critics felt that literary culture had become increasingly inward-looking, too reluctant to move with the times and to take on board the wider sociological changes of the moment. Beginning with little magazines such as Jabberwock and Sidewalk in the late 1950s and early 1960s, this chapter examines the restlessness and push for change found in Scottish literary magazines throughout the sixties. This need to move the Scottish literary scene on from within therefore permeates many of the short-lived, energetic magazines of this period. Tracing through the 1960s, into the 1970s, looking at magazines such as Lines Review and Scottish International, this chapter then reflects upon the ways in which Scottish magazine culture became increasingly more polemical, politically and culturally engaged
'Five stones underneath' : Literary representations of the Lockerbie air disaster
December 21st 2018 marked the 30th anniversary of the Lockerbie Air Disaster. Despite this lengthy passage of time, the case remains highly contentious and active. A quick search on the topic reveals a host of possible conspiracy theories and cover-ups, many conflicting narratives and possibilities, and, for many, a strong feeling that the sentencing of Abdelbasset al-Megrahi represented a miscarriage of justice. While there have been many political books and articles on Lockerbie, surprisingly to date there have been no scholarly papers on its literary representations. This article therefore considers the ways in which the Lockerbie Air Disaster has been considered in fiction, drama and poetry since 1988, surveying what has been published, as well as examining some of the motivations behind these. As will be demonstrated, some common threads run through these literary texts: namely, a frustration with the slowness of the ongoing criminal case and the perception that justice has still to be served. As will be demonstrated, many of the Lockerbie texts therefore contain inherent, politically-charged provocations, sending out reminders that many aspects of the case have still to be accounted for in the public domain
The development of Diplostomum phoxini (Strigeida, Trematoda) in vivo and in vitro
Abstract Not Provided
Demonstration of early functional compromise of bone marrow derived hematopoietic progenitor cells during bovine neonatal pancytopenia through in vitro culture of bone marrow biopsies
<p>Abstract</p> <p>Background</p> <p>Bovine neonatal pancytopenia (BNP) is a syndrome characterised by thrombocytopenia associated with marked bone marrow destruction in calves, widely reported since 2007 in several European countries and since 2011 in New Zealand. The disease is epidemiologically associated with the use of an inactivated bovine virus diarrhoea (BVD) vaccine and is currently considered to be caused by absorption of colostral antibody produced by some vaccinated cows (“BNP dams”). Alloantibodies capable of binding to the leukocyte surface have been detected in BNP dams and antibodies recognising bovine MHC class I and β-2-microglobulin have been detected in vaccinated cattle. In this study, calves were challenged with pooled colostrum collected from BNP dams or from non-BNP dams and their bone marrow hematopoietic progenitor cells (HPC) cultured <it>in vitro</it> from sternal biopsies taken at 24 hours and 6 days post-challenge.</p> <p>Results</p> <p>Clonogenic assay demonstrated that CFU-GEMM (colony forming unit-granulocyte/erythroid/macrophage/megakaryocyte; pluripotential progenitor cell) colony development was compromised from HPCs harvested as early as 24 hour post-challenge. By 6 days post challenge, HPCs harvested from challenged calves failed to develop CFU-E (erythroid) colonies and the development of both CFU-GEMM and CFU-GM (granulocyte/macrophage) was markedly reduced.</p> <p>Conclusion</p> <p>This study suggests that the bone marrow pathology and clinical signs associated with BNP are related to an insult which compromises the pluripotential progenitor cell within the first 24 hours of life but that this does not initially include all cell types.</p
Identficaton and Characterization of Pollutant Hot Spots Integratng Probe Vehicle, Traffic and Land Use Data
Identification and Characterization of PM2.5 and VOC Hot Spots on Arterial Corridor by Integrating Probe Vehicle, Traffic, and Land Use Data: The purpose of this study is to explore the use of integrated probe vehicle, traffic and land use data to identify and characterize fine particulate matter (PM2.5) and volatile organic compound (VOC) hot spot locations on urban arterial corridors. An emission hot spot is defined as a fixed location along a corridor in which the mean pollutant concentrations are consistently above the 85th percentile of pollutant concentrations when considering all other locations along the corridor during the same time period. In order to collect data for this study, an electric vehicle was equipped with instruments designed to measure PM2.5 and VOC concentrations. Second-by-second measurements were performed for each pollutant from both the right and left sides of the vehicle. Detailed meteorological, traffic and land use data is also available for this research. The results of a statistical analysis are used to better understand which data sources are most valuable in estimating PM2.5 and VOC hot spot locations consistent with empirical data, as well as which variables have the greatest impact on emissions and pollutant levels at a microscale level. This research highlights the importance of considering both consistency and peak emission levels when identifying hot spot locations. An objective of this research is to develop a method to identify urban arterial hot spot locations that provides a balance of efficiency (in terms of capital expenses, time, resources, expertise requirements, etc.) and accuracy.https://pdxscholar.library.pdx.edu/trec_seminar/1074/thumbnail.jp
The Mental Health and Social Media Use of Young Australians during the COVID-19 Pandemic
Young people may be particularly vulnerable to the mental health impacts of the COVID-19 pandemic and may also be more likely to use social media at this time. This study aimed to explore young people\u27s mental health and social media use during the COVID-19 pandemic and examined their use of social media to seek and provide support for suicidal thoughts and self-harm during this period. Young people aged 16-25 (n = 371, M = 21.1) from the general population in Australia completed an anonymous, cross-sectional online survey advertised on social media from June to October 2020. Participants reported high levels of psychological distress, with over 40% reporting severe levels of anxiety and depression, and those with a mental health diagnosis were more likely to perceive the pandemic to have had a negative impact on their mental health. Gender-diverse participants appeared the most negatively impacted. Social media use was high, with 96% reporting use at least once a day, and two-thirds reporting an increase in social media use since the start of the pandemic. One-third had used social media to seek support for suicidal thoughts or self-harm, and half had used it to support another person. This study adds to a growing literature suggesting social media can provide an opportunity to support young people experiencing psychological distress and suicide risk. Uniquely, this study points to the utility of using social media for this purpose during high-risk periods such as pandemics, where access to face-to-face support may be limited. To promote the quality and safety of support provided on social media, resources for help-seekers and help-givers should be developed and disseminated. Social media companies must consider the vulnerability of some users during pandemics and do what they can to promote wellbeing and safety
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