1,112 research outputs found
Simulation of modelling of turbulent trailing edge flow
No full textComputations of turbulent trailing-edge flow have been carried out at a Reynolds number of 1000 (based on the free-stream quantities and the trailing-edge thickness) using an unsteady 3D Reynolds-Averaged Navier–Stokes (URANS) code, in which two-equation (k–?) turbulence models with various low-Re near wall treatments were implemented. Results from a direct numerical simulation (DNS) of the same flow are available for comparison and assessment of the turbulence models used in the URANS code. Two-dimensional URANS calculations are carried out with turbulence mean properties from the DNS used at the inlet; the inflow boundary-layer thickness is 6.42 times the trailing-edge thickness, close to typical turbine blade flow applications. Many of the key flow features observed in DNS are also predicted by the modelling; the flow oscillates in a similar way to that found in bluff-body flow with a von Kármán vortex street produced downstream. The recirculation bubble predicted by unsteady RANS has a similar shape to DNS, but with a length only half that of the DNS.It is found that the unsteadiness plays an important role in the near wake, comparable to the modelled turbulence, but that far downstream the modelled turbulence dominates. A spectral analysis applied to the force coefficient in the wall normal direction shows that a Strouhal number based on the trailing-edge thickness is 0.23, approximately twice that observed in DNS. To assess the modelling approximations, an a priori analysis has been applied using DNS data for the key individual terms in the turbulence model equations. A possible refinement to account for pressure transport is discussed
Identifying Personal Beliefs and Values Through Group Sense-Making
No full textGraduates increasingly encounter a world characterised by super complexity, where their ability to understand their environs and their own responses to situations is of paramount importance. In addition, the ability to articulate one’s values, beliefs and feelings is crucial in the workplace to enable careful judgement, creative thinking and decision-making. The process of group-sensemaking encourages students to practice being vulnerable by examining and articulating their responses to situations, events or ideas. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland
Morse resolutions of powers of square-free monomial ideals of projective dimension one
No full textLet I be a square-free monomial ideal of projective dimension one. Starting with the Taylor complex on the generators of Ir, we use discrete Morse theory to describe a CW complex that supports a minimal free resolution of Ir. To do so, we concretely describe the acyclic matching on the faces of the Taylor complex. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature
The everyday experience of living with and managing a neurological condition (the LINC study): study design
No full textBackground: The impact of neurological conditions on individuals, families and society is increasing and having a significant economic impact in Canada. While some economic data is known, the human costs of living with a neurological condition are poorly understood and rarely factored into future burden analyses. The "Living with the Impact of a Neurological Condition (LINC)" study aims to fill this gap. It seeks to understand, for children and adults with neurological conditions, the supports and resources that make everyday life possible and meaningful. Methods/design: The LINC study is a nested study using mixed methods. We are interested in the following outcomes specifically: health status; resource utilization; self-management strategies; and participation. Three studies captured data from multiple sources, in multiple ways and from multiple perspectives. Study One: a populationbased survey of adults (n = 1500), aged 17 and over and parents (n = 200) of children aged 5 to 16 with a neurological condition. Study Two: a prospective cohort study of 140 adults and parents carried out using monthly telephone calls for 10 months; and Study Three: a multiple perspective case study (MPCS) of 12 adults and 6 parents of children with a neurological condition. For those individuals who participate in the MPCS, we will have data from all three studies giving us rich, in depth insights into their daily lives and how they cope with barriers to living in meaningful ways. Discussion: The LINC study will collect, for the first time in Canada, data that reflects the impact of living with a neurological condition from the perspectives of the individuals themselves. A variety of tools will be used in a combination, which is unique and innovative. This study will highlight the commonalities of burden that Canadians living with neurological conditions experience as well as their strategies for managing everyday life. [ABSTRACT FROM AUTHOR
A usability study on the Komen Virtual Tissue Bank
No full textThe Susan G. Komen for the Cure Virtual Tissue Bank application was evaluated for usability via established usability testing methods. Five subjects were each asked to perform five application tasks; the usability metrics gathered include time-on-task, task success, and issues with severity ratings. First, the study revealed that the application should provide better guidance when users are required to launch external applications. Second, results indicated that the layout of hyperlinks to searchable experimental datasets was confusing and should be redesigned. Moreover, the study showed that some subjects who were unsuccessful at completing certain tasks mistakenly believed they were successful. This indicated that the feedback delivered to the user by the application needed to be designed to remove ambiguities. Third, the author speculates that the descriptive power of the System Usability Scale may be tailored to fit data-driven bioinformatics repositories through exploratory factor analysis. The study demonstrated the relevance and need for usability research in the bioinformatics domain
Reflecting on good mathematics teaching: knowing, nurturing, noticing
No full textThe chapter "Reflecting on good mathematics teaching: Knowing, nurturing, noticing" was written by Susan Oesterle (Douglas College Faculty). The book brings together recent research and commentary in secondary school mathematics from a breadth of contemporary Canadian and International researchers and educators. It is both representative of mathematics education generally, as well as unique to the particular geography and culture of Canada. The chapters address topics of broad applicability such as technology in learning mathematics, recent interest in social justice contexts in the learning of mathematics, as well as Indigenous education. The voices of classroom practitioners, the group ultimately responsible for implementing this new vision of mathematics teaching and learning, are not forgotten. Each section includes a chapter written by a classroom teacher, making this volume unique in its approach. Part of the "Advances in mathematics education" series. Provided by publisher.book chapte
Erratum to: A mixed methods feasibility study of nicotine-assisted smoking reduction programmes delivered by community pharmacists – The RedPharm study
No full textFollowing publication of this article [1], it has come to our attention that the author, Susan MacAskill, has had her name captured incorrectly. The correct spelling is the aforementioned
How Beliefs Make A Difference (PhD dissertation) SEARCHABLE pdf
No full textHow are beliefs efficacious? One answer is: via rational intentional action. But there are other ways that beliefs are efficacious. This dissertation examines these other ways, and sketches an answer to the question of how beliefs are efficacious that takes into account how beliefs are involved in the full range of behavioral disciplines, from psychophysiology and cognition to social and economic phenomena.
The account of how beliefs are efficacious I propose draws on work on active accounts of perception. I develop an account based on a proposal sketched by the cognitive scientist Ulrich Neisser. Neisser sketched an active account of perception, on which dynamic anticipatory schemata direct an organism's exploration and action, and are in turn revised as a result of exploration and action. This notion of schema has roots in nineteenth century neurophysiology and in Frederick Bartlett's subsequent work on memory. Neisser appealed to it to unite what he thought was right about information-processing accounts of perception with what he thought was right about ecological accounts of perception. The point that we must anticipate in order to perceive has been recognized by philosophers in the form of the "theory-ladenness of observation." I extend the concept of anticipatory schema to include its role in social perception and social interaction; the concept of anticipatory schema provides a more interactive account of the role of expectations in the maintenance and existence of social institutions, and can be used to enrich the account of convention David Lewis provided. I also show that the concept of rational expectations, which explains the neutrality of money in terms of the efficacy of anticipatory expectations, is compatible with the proposed account of how beliefs are efficacious.
I discuss how the proposal accounts for the three main modes by which beliefs can be efficacious: (i) via their role in causing intentional action, (ii) via their role in causing economic phenomena and the existence and maintenance of social institutions, and (iii) via their role in causing unintentional physiological responses, including anticipatory physiological responses that can enable perception, cause involuntary actions and give rise to the placebo effect
Author Correction: Inherited causes of clonal haematopoiesis in 97,691 whole genomes (Nature, (2020), 586, 7831, (763-768), 10.1038/s41586-020-2819-2)
No full text© 2021, The Author(s), under exclusive licence to Springer Nature Limited. In this Article, Abhishek Niroula should have been listed as an author, with the affiliations: Broad Institute of MIT and Harvard, Cambridge, MA, USA; and Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA. They performed additional bioinformatic analyses (see ‘Author contributions’). The original Article has been corrected online
Recontacting in clinical practice: the views and expectations of patients in the United Kingdom
No full textThis is the author accepted manuscript. The final version is available on open access from Springer Nature via the DOI in this record.This paper explores the views and expectations of patients concerning recontacting in clinical practice. It is based on 41 semi-structured interviews conducted in the UK. The sample comprised patients or parents of patients: without a diagnosis; recently offered a test for a condition or carrier risk; with a rare condition; with a Variant of Unknown Significance (VUS) – some of whom had been recontacted. Participants were recruited both via the National Health Service (NHS) and through online, condition-specific support groups.
Most respondents viewed recontacting as desirable, however there were different opinions and expectations about what type of new information should trigger recontacting. An awareness of the potential psychological impact of receiving new information led some to suggest that recontacting should be planned, and tailored to the nature of the new information and the specific situation of patients and families.
The lack of clarity about lines of responsibility for recontacting and perceptions of resource constraints in the NHS tended to mitigate respondents’ favorable positions towards recontacting and their preferences. Some respondents argued that recontacting could have a preventative value and reduce the cost of healthcare. Others challenged the idea that resources should be used to implement formalized recontacting systems – via arguments that there are ‘more pressing’ public health priorities, and for the need for healthcare services to offer care to new patients.Economic and Social Research Council (ESRC
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