273 research outputs found

    Ask the audience: a simple teaching method to improve the learning experience in large lectures

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    The popularity of computer science H.E. courses has resulted in the challenge of delivering lectures to large cohorts of computing undergraduates. In some cases there has been limited success in student engagement. There is little scope for interaction and feedback may be inhibited. It is generally accepted that where students actively engage with feedback, this may promote learning. This paper explains a technique, Colourcard, that is being used successfully in two U.K. universities to support the strategic goal to use feedback as part of teaching to promote learning. The basis of the technique is that lecturers use student feedback to control the pace and direction of the lecture, and to support the development of a relationship between lecturer and students. Findings from two case studies are briefly presented. The cases involve delivery of first year undergraduate systems analysis and data modelling lectures to large student groups in 2002/03

    What factors facilitate a GP survey high response rate?

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    Copyright © 2005 Royal Australian College of General Practitioners Copyright to Australian Family Physician. Reproduced with permission. Permission to reproduce must be sought from the publisher, The Royal Australian College of General Practitioners.General practitioners are inundated with surveys seeking information about their beliefs and practices by a range of health researchers, policy makers and marketers. Their time for these surveys is often unpaid, or under-rewarded, or impinges on other responsibilities. If response rates are too low – something all too common – results are impossible or difficult to interpret.J. Fielding, H. Clothier, N. Stocks N and H. Kell

    Expanding the Envelope of UAS Certification: What it Takes to Type Certify a UAS for Precision Agricultural Spraying

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    One of the key challenges to the development of a commercial Unmanned Air-craft System (UAS) market is the lack of explicit consideration of UAS in the current regulatory framework. Despite recent progress, additional steps are needed to enable broad UAS types and operational models. This paper discusses recent research that examines how a risk-based approach for safety might change the process and substance of airworthiness requirements for UAS. The project proposed risk-centric airworthiness requirements for a midsize un-manned rotorcraft used for agricultural spraying and also identified factors that may contribute to distinguishing safety risk among different UAS types and operational concepts. Lessons learned regarding how a risk-based approach can expand the envelope of UAS certification are discussed

    Healthy families: the present and future role of the supermarket

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    In this report, we contend that the grocery industry must be accountable for their role in an obesogenic environment. The social context most likely to support making healthy behaviour changes is the family. For families, supermarkets represent more than merely places in which to spend their money. They establish the values that underpin the ways in which people conduct their lives

    Detecting the start of an influenza outbreak using exponentially weighted moving average charts

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    Background. Influenza viruses cause seasonal outbreaks in temperate climates, usually during winter and early spring, and are endemic in tropical climates. The severity and length of influenza outbreaks vary from year to year. Quick and reliable detection of the start of an outbreak is needed to promote public health measures. Methods. We propose the use of an exponentially weighted moving average (EWMA) control chart of laboratory confirmed influenza counts to detect the start and end of influenza outbreaks. Results. The chart is shown to provide timely signals in an example application with seven years of data from Victoria, Australia. Conclusions. The EWMA control chart could be applied in other applications to quickly detect influenza outbreaks

    Estimation of Influenza Vaccine Effectiveness from Routine Surveillance Data

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    BACKGROUND: Influenza vaccines are reviewed each year, and often changed, in an effort to maintain their effectiveness against drifted influenza viruses. There is however no regular review of influenza vaccine effectiveness during, or at the end of, Australian influenza seasons. It is possible to use a case control method to estimate vaccine effectiveness from surveillance data when all patients in a surveillance system are tested for influenza and their vaccination status is known. METHODOLOGY/PRINCIPAL FINDINGS: Influenza-like illness (ILI) surveillance is conducted during the influenza season in sentinel general practices scattered throughout Victoria, Australia. Over five seasons 2003-7, data on age, sex and vaccination status were collected and nose and throat swabs were offered to patients presenting within three days of the onset of their symptoms. Swabs were tested using a reverse transcriptase polymerase chain reaction (RT-PCR) test. Those positive for influenza were sent to the World Health Organization (WHO) Collaborating Centre for Reference and Research on Influenza where influenza virus culture and strain identification was attempted. We used a retrospective case control design in five consecutive influenza seasons, and estimated influenza vaccine effectiveness (VE) for patients of all ages to be 53% (95% CI 38-64), but 41% (95% CI 19-57) adjusted for age group and year. The adjusted VE for all adults aged at least 20 years, the age groups for whom a benefit of vaccination could be shown, was 51% (95% CI 34-63). Comparison of VE estimates with vaccine and circulating strain matches across the years did not reveal any significant differences. CONCLUSIONS/SIGNIFICANCE: These estimates support other field studies of influenza vaccine effectiveness, given that theoretical considerations suggest that these values may underestimate true effectiveness, depending on test specificity and the ratio of the influenza ILI attack rate to the non-influenza ILI attack rate. Incomplete recording of vaccination status and under-representation of children in patients from whom a swab was collected limit the data. Improvements have been implemented for prospective studies