Dawn Coleby

Bio: Dawn Coleby is an academic researcher from RMIT University. The author has contributed to research in topics: Randomized controlled trial & Emergency department. The author has an hindex of 9, co-authored 19 publications receiving 532 citations. Previous affiliations of Dawn Coleby include University of Leicester & Coventry University.

Feature selective validation (FSV) for validation of computational electromagnetics (CEM). part II- assessment of FSV performance

Abstract: The feature selective validation (FSV) method has been proposed as a technique to allow the objective, quantified, comparison of data for inter alia validation of computational electromagnetics. In the companion paper "Feature selective validation for validation of computational electromagnetics. Part I-The FSV method," the method was outlined in some detail. This paper addresses two specific issues related to the implementation of the FSV method, namely "how well does it produce results that agree with visual assessment?" and "what benefit can it provide in a practical validation environment?" The first of these questions is addressed by comparing the FSV output to the results of an extensive survey of EMC engineers from several countries. The second is approached via a case study analysis

Validation of a Three-Dimensional Transmission Line Matrix (TLM) Model Implementation of a Mode-Stirred Reverberation Chamber

Abstract: Reverberation chambers are attractive electromagnetic compatibility test facilities, both economically and technically. Careful design and analysis of these facilities are important, if the results obtained are to be treated with a high level of confidence. Numerical modeling is an important part of the process of reverberation chamber design and analysis. Hence, it is important that the modeling techniques to be used are appropriately validated. Much of the published work to date takes either a statistical or a deterministic view of validation. This paper provides validation evidence for a low-resolution transmission line matrix (TLM) model of a reverberation chamber in a manner approximating the way in which the chamber is used, i.e., validating based on the effects of a simple device under test. A variety of statistical and heuristic approaches have been used to quantify the level of agreement, intending to set the likely lower bound for the quality of comparisons between simulations and measurements. While not drawing any "universal" conclusions about the veracity of the TLM technique, the paper concludes that a relatively simple model of a reverberation chamber provides a useful analysis of the chamber with close comparisons between modeled and measured data.

Analysis of techniques to compare complex data sets

Abstract: This paper analyses a number of techniques that can be used to compare complex data sets, such as those arising from electromagnetic simulation and experimentation. The techniques assessed are: correlation, several reliability factors and feature selective validation. The study examines the performance of each technique for data comparison. The paper provides a comprehensive summary of the techniques and compares their performance and comments on their use in the validation of numerical modelling codes and model designs.

Delay between symptom onset and clinic attendance following TIA and minor stroke: the BEATS study

Abstract: Background: rapid specialist assessment of patients with transient ischaemic attack (TIA) reduces the risk of recurrent stroke. National guidelines advise that high-risk patients are assessed within 24 h and low-risk patients within 7 days. Aim: to quantify delay and map pathways taken by patients from symptom onset to specialist assessment. Design: retrospective cohort study. Setting: rapid access TIA clinic. Methods: structured interviews with 278 patients newly diagnosed with TIA (222) or minor stroke (56), and examination of medical records. Results: of the 133 high-risk TIA patients, 11 (8%) attended the clinic within 24 h of symptom onset; of the 89 low-risk TIA patients, 47 (53%) attended within 7 days. Median delay between symptom onset and seeking help from a healthcare professional (HCP) was 4.0 h (IQR 0.5, 41.3). Delay was less if symptoms were correctly interpreted but not reduced by a publicity campaign (FAST) to encourage an urgent response. Most patients (156, 56%) first contacted a general practitioner (GP) and 46 (17%) called an ambulance or attended the emergency department. Over a third (36%) had a second consultation with an HCP before attending the clinic, and this was more likely in those presenting to paramedics, out of hours GP services or optometry. Time to clinic attendance was less if an emergency pathway was used and greater if patients were seen by a second HCP. Conclusions: factors contributing to delay include incorrect interpretation of symptoms and failure to invoke emergency services. Delays after presentation could be addressed by direct referral by out of hours services, paramedics and optometrists.

About the National Institute for Health and Care Excellence - NICE.

Abstract:

Institutional change and healthcare organizations: from professional dominance to managed care

Abstract: From an historical and sociological perspective, ‘integrated care’ has emerged as part of institutional efforts to break up professional fiefdoms, especially of subspecialists entrenched in hospitals, and to reorganise services around clinically integrated pathways and services for the patients. It was the more enlightened part of what I have called the ‘buyers’ revolt’, which occurred in the 1980s when those who had long paid the bills (insurers, governments, employers) became so fed up by the waste, excesses, and variability of services delivered under professional dominance that they started to take forceful action w1x. This book is a masterpiece of historical work and organisational analysis of that revolt at its centre, the San Francisco Bay area.

Feature selective validation (FSV) for validation of computational electromagnetics (CEM). part II- assessment of FSV performance

Abstract: The feature selective validation (FSV) method has been proposed as a technique to allow the objective, quantified, comparison of data for inter alia validation of computational electromagnetics. In the companion paper "Feature selective validation for validation of computational electromagnetics. Part I-The FSV method," the method was outlined in some detail. This paper addresses two specific issues related to the implementation of the FSV method, namely "how well does it produce results that agree with visual assessment?" and "what benefit can it provide in a practical validation environment?" The first of these questions is addressed by comparing the FSV output to the results of an extensive survey of EMC engineers from several countries. The second is approached via a case study analysis

Improving post-stroke recovery: the role of the multidisciplinary health care team.

Abstract: Stroke is a leading cause of serious, long-term disability, the effects of which may be prolonged with physical, emotional, social, and financial consequences not only for those affected but also for their family and friends. Evidence for the effectiveness of stroke unit care and the benefits of thrombolysis have transformed treatment for people after stroke. Previously viewed nihilistically, stroke is now seen as a medical emergency with clear evidence-based care pathways from hospital admission to discharge. However, stroke remains a complex clinical condition that requires health professionals to work together to bring to bear their collective knowledge and specialist skills for the benefit of stroke survivors. Multidisciplinary team working is regarded as fundamental to delivering effective care across the stroke pathway. This paper discusses the contribution of team working in improving recovery at key points in the post-stroke pathway.