8383 research outputs found
Sort by
Why appealing to the virtues of scientific theory (and method) is necessary but insufficient for effecting systemic change: Commentary on Fergnani & Chermack, 2021
Get PDFFrom Wiley via Jisc Publications RouterHistory: pub-print 2021, received 2021-01-31, rev-recd 2021-02-11, accepted 2021-02-16, pub-electronic 2021-03-18Article version: VoRPublication status: Publishe
The prognostic value of emergency department measured hypertension: A systematic review and meta‐analysis
Get PDFFrom Wiley via Jisc Publications RouterHistory: received 2021-03-25, rev-recd 2021-06-07, accepted 2021-06-15, pub-electronic 2021-09-22Article version: VoRPublication status: PublishedFunder: Royal College of Emergency Medicine; Id: http://dx.doi.org/10.13039/501100007566Funder: National Institute of Health Research (UK)Abstract: Objectives: The objective was to assess the prognostic value of hypertension detected in the emergency department (ED). Methods: The ED presents a unique opportunity to predict long‐term cardiovascular disease (CVD) outcomes with its potential for high‐footfall, and large‐scale routine data collection applied to underserved patient populations. A systematic review and meta‐analyses were conducted to assess the prognostic performance and feasibility of ED‐measured hypertension as a risk factor for long‐term CVD outcomes. We searched MEDLINE and Embase databases and gray literature sources. The target populations were undifferentiated ED patients. The prognostic factor of interest was hypertension. Feasibility outcomes included prevalence, reliability, and follow‐up attendance. Meta‐analyses were performed for feasibility using a random effect and exact likelihood. Results: The searches identified 1072 studies after title and abstract review, 53 studies had their full text assessed for eligibility, and 26 studies were included. Significant heterogeneity was identified, likely due to the international populations and differing study design. The meta‐analyses estimate of prevalence for ED‐measured hypertension was 0.31 (95% confidence interval 0.25–0.37). ED hypertension was persistent outside the ED (FE estimate of 0.50). The proportion of patients attending follow‐up was low with an exact likelihood estimate of 0.41. Three studies examined the prognostic performance of hypertension and demonstrated an increased risk of long‐term CVD outcomes. Conclusion: Hypertension can be measured feasibly in the ED and consequently used in a long‐term cardiovascular risk prediction model. There is an opportunity to intervene in targeted individuals, using routinely collected data
Publication outperformance among global South researchers: An analysis of individual-level and publication-level predictors of positive deviance
Get PDFFrom Springer Nature via Jisc Publications RouterHistory: received 2020-12-19, accepted 2021-08-05, registration 2021-08-06, pub-electronic 2021-09-13, online 2021-09-13, pub-print 2021-10Publication status: PublishedAbstract: Research and development are central to economic growth, and a key challenge for countries of the global South is that their research performance lags behind that of the global North. Yet, among Southern researchers, a few significantly outperform their peers and can be styled research “positive deviants” (PDs). In this paper we ask: who are those PDs, what are their characteristics and how are they able to overcome some of the challenges facing researchers in the global South? We examined a sample of 203 information systems researchers in Egypt who were classified into PDs and non-PDs (NPDs) through an analysis of their publication and citation data. Based on six citation metrics, we were able to identify and group 26 PDs. We then analysed their attributes, attitudes, practices, and publications using a mixed-methods approach involving interviews, a survey and analysis of publication-related datasets. Two predictive models were developed using partial least squares regression; the first predicted if a researcher is a PD or not using individual-level predictors and the second predicted if a paper is a paper of a PD or not using publication-level predictors. PDs represented 13% of the researchers but produced about half of all publications, and had almost double the citations of the overall NPD group. At the individual level, there were significant differences between both groups with regard to research collaborations, capacity development, and research directions. At the publication level, there were differences relating to the topics pursued, publication outlets targeted, and paper features such as length of abstract and number of authors
An interview with Judith Weir
Get PDFCemil Egeli previously worked as a researcher on the flagship arts TV programme 'The South Bank Show' (then broadcast on ITV), where in 2001 Judith Weir received the prestigious music award for her choral and orchestral work, We Are Shadows. Some 20 years later, Judith Weir has very kindly agreed to him posing some interview questions
Oscillatory and stability of a mixed type difference equation with variable coefficients
Get PDFThe goal of this paper is to study the oscillatory and stability of the mixed type difference equation with variable coefficients where is the delay term and is the advance term and they are positive real sequences for and , respectively, and and are real functions. This paper generalise some known results and the examples illustrate the results
Error estimates of a continuous Galerkin time stepping method for subdiffusion problem
Get PDFA continuous Galerkin time stepping method is introduced and analyzed for subdiffusion problem in an abstract setting. The approximate solution will be sought as a continuous piecewise linear function in time and the test space is based on the discontinuous piecewise constant functions. We prove that the proposed time stepping method has the convergence order for general sectorial elliptic operators for nonsmooth data by using the Laplace transform method, where is the time step size. This convergence order is higher than the convergence orders of the popular convolution quadrature methods (e.g., Lubich's convolution methods) and L-type methods (e.g., L1 method), which have only convergence for the nonsmooth data. Numerical examples are given to verify the robustness of the time discretization schemes with respect to data regularity
Loneliness and Scholastic Self-Beliefs among Adolescents: A population-based survey.
Get PDFThis is an Accepted Manuscript of an article published by Taylor & Francis in Scandinavian Journal of Educational Research on 18/10/2021, available online: https://doi.org/10.1080/00313831.2021.1983865Loneliness has previously been linked to cognitive and attentional bias, and such biases may have a detrimental impact on perceived scholastic self-beliefs. Little is known about the relationship in school-aged adolescents. The current study examined the association between loneliness and scholastic self-beliefs in a nationally representative Danish sample of adolescents (aged 11-, 13- and 15 years, n = 3815, collected by the Health Behaviour in School-aged Children study (HBSC, 2014). Through binary logistic regressions, results demonstrated that higher levels of loneliness, measured by a single item and a composite score, were associated with poorer self-reported achievement perception, higher feelings of school dissatisfaction, and greater feelings of school pressure. Results also suggested gender played a moderating role. The current study highlights the importance of loneliness for scholastic self-beliefs, and provides a novel insight by utilising distinct loneliness measures. The implications, in relation to research and practise, are discussed
Stress Corrosion Cracking of Additively Manufactured Alloy 625
Get PDFFrom MDPI via Jisc Publications RouterHistory: accepted 2021-10-12, pub-electronic 2021-10-15Publication status: PublishedLaser bed powder fusion (LPBF) is an additive manufacturing technology for the fabrication of semi-finished components directly from computer-aided design modelling, through melting and consolidation, layer upon layer, of a metallic powder, with a laser source. This manufacturing technique is particularly indicated for poor machinable alloys, such as Alloy 625. However, the unique microstructure generated could modify the resistance of the alloy to environment assisted cracking. The aim of this work was to analyze the stress corrosion cracking (SCC) and hydrogen embrittlement resistance behavior of Alloy 625 obtained by LPBF, both in as-built condition and after a standard heat treatment (grade 1). U-bend testing performed in boiling magnesium chloride at 155 and 170 °C confirmed the immunity of the alloy to SCC. However, slow strain rate tests in simulated ocean water on cathodically polarized specimens highlighted the possibility of the occurrence of hydrogen embrittlement in a specific range of strain rate and cathodic polarization. The very fine grain size and dislocation density of the thermally untreated specimens appeared to increase the hydrogen diffusion and embrittlement effect on pre-charged specimens that were deformed at the high strain rate. Conversely, heat treatment appeared to mitigate hydrogen embrittlement at high strain rates, however at the slow strain rate all the specimens showed a similar behavior
The Wiener–Hopf technique, its generalizations and applications: constructive and approximate methods
Get PDFFrom The Royal Society via Jisc Publications RouterHistory: received 2021-07-01, accepted 2021-09-10, pub-electronic 2021-10-20, pub-print 2021-10-27Article version: VoRPublication status: PublishedFunder: Royal Society; Id: http://dx.doi.org/10.13039/501100000288; Grant(s): Dorothy Hodgkin Research Fellowship, Wolfson Research Merit Award and Ser Cymru FutureFunder: Belarusian Republican Foundation for Fundamental Research; Id: http://dx.doi.org/10.13039/100007595; Grant(s): F20MS-083Funder: Engineering and Physical Sciences Research Council; Id: http://dx.doi.org/10.13039/501100000266; Grant(s): EP/R014604/1This paper reviews the modern state of the Wiener–Hopf factorization method and its generalizations. The main constructive results for matrix Wiener–Hopf problems are presented, approximate methods are outlined and the main areas of applications are mentioned. The aim of the paper is to offer an overview of the development of this method, and demonstrate the importance of bringing together pure and applied analysis to effectively employ the Wiener–Hopf technique
Waiting for Brexit: Crisis, conjuncture, method
Get PDFFrom Wiley via Jisc Publications RouterHistory: received 2020-11-30, rev-recd 2021-07-06, accepted 2021-09-25, pub-electronic 2021-10-20Article version: VoRPublication status: PublishedAbstract: UK geopolitics for the last five years has been heavily dominated by Brexit. The lead up to the referendum, the result, negotiations, intervening general election, extensions, further negotiations, and impending exit from the European Union have captured both academic and public interest. This paper contributes to geographical and wider social science research on the everyday geographies of socio‐economic change, with a particular focus on Brexit and the temporal politics of waiting. Emerging analyses focus on Brexit as an event, as uncertainty, and a discrete period for and of research on public moods. I illustrate how exploring Brexit through the lens of waiting provides new ways of thinking through the time‐spaces of Brexit, by drawing on data collected during an ethnographic participatory project in Gorse Hill, Greater Manchester (2018–2020). Analysis of group discussions, peer‐led research projects, podcast recordings, vox pops, and ethnographic fieldnotes highlight the embodied, everyday, endured, and emplaced experience of waiting for Brexit. More specifically, findings make the case for this waiting as crisis, as conjuncture, and as method. The paper closes with a discussion of the pace and timeliness of research, and the implications of waiting for, in, and with Brexit and other forms of socio‐economic change
Data sources:
Access Repository Dashboard
Do you manage ChesterRep? Access insider analytics, issue reports and manage access to outputs from your repository in the CORE Repository Dashboard!