34,003 research outputs found

    Measuring and comparing the reliability of the structured walkthrough evaluation method with novices and experts

    Get PDF
    Effective evaluation of websites for accessibility remains problematic. Automated evaluation tools still require a significant manual element. There is also a significant expertise and evaluator effect. The Structured Walkthrough method is the translation of a manual, expert accessibility evaluation process adapted for use by novices. The method is embedded in the Accessibility Evaluation Assistant (AEA), a web accessibility knowledge management tool. Previous trials examined the pedagogical potential of the tool when incorporated into an undergraduate computing curriculum. The results of the evaluations carried out by novices yielded promising, consistent levels of validity and reliability. This paper presents the results of an empirical study that compares the reliability of accessibility evaluations produced by two groups (novices and experts). The main results of this study indicate that overall reliability of expert evaluations was 76% compared to 65% for evaluations produced by novices. The potential of the Structured Walkthrough method as a useful and viable tool for expert evaluators is also examined. Copyright 2014 ACM

    Literature circles, gender and reading for enjoyment

    Get PDF
    The research was commissioned through Information and Analytical Services Division, which is responsible for providing analytical services within the Scottish Executive Education Department (SEED). Their work is part of a multidisciplinary unit (consisting of researchers, economists and statistics staff) and the staff undertakes and funds economic analysis and social research in the fields of: school education; children, young people and social work: architecture; and tourism, culture and sport

    Menstrual cycle and competitive bidding

    Get PDF
    In an experiment using two-bidder first-price sealed bid auctions with symmetric independent private values, we collected information on the female participants' menstrual cycles. We find that women bid significantly higher than men in their menstrual and premenstrual phase but do not bid significantly different in other phases of the menstrual cycle. We suggest an evolutionary hypothesis according to which women are genetically predisposed by hormones to generally behave more riskily during their fertile phase of their menstrual cycle in order to increase the probability of conception, quality of offspring, and genetic variety. Our finding is in contrast to results by Chen, Katuscak and Ozdenoren (2005, 2009).hormones; menstrual cycle; gender; likelihood of conception; first price auction; risk behavior; competition; bidding; endocrinological economics

    The Visible Hand: Finger ratio (2D:4D) and competitive behavior

    Get PDF
    In an experiment using two-bidder first-price sealed bid auctions with symmetric independent private values, we scan also the right hand of each subject. We study how the ratio of the length of the index and ring fingers (2D:4D) of the right hand, a measure of prenatal hormone exposure, is correlated with bidding behavior and total profits. 2D:4D has been reported to predict competitiveness in sports competition (Manning and Taylor, 2001, and Hoenekopp, Manning and Mueller, 2006), risk aversion in an investment task (Dreber and Hoffman, 2007), and the average profitability of high-frequency traders in financial markets (Coates, Gurnell and Rustichini, 2009). We do not find any significant correlation between 2D:4D and both bidding or profits. Yet, our study raises an issue of ethnic differences with respect to 2D:4D.hormones; digit ratio; 2D:4D; risk behavior; competition; competitive behavior; bidding; endocrinological economics

    The Visible Hand: Finger Ratio (2D:4D) and Competitive Behavior

    Get PDF
    In an experiment using two-bidder first-price sealed bid auctions with symmetric independent private values, we scan also the right hand of each subject. We study how the ratio of the length of the index and ring fingers (2D:4D) of the right hand, a measure of prenatal hormone exposure, is correlated with bidding behavior and total profits. 2D:4D has been reported to predict competitiveness in sports competition (Manning and Taylor, 2001, and Honekopp, Manning and Muller, 2006), risk aversion in an investment task (Dreber and Hoffman, 2007), and the average profitability of high-frequency traders in financial markets (Coates, Gurnell and Rustichini, 2009). We do not find any significant correlation between 2D:4D and both bidding or profits. Yet, our study raises an issue of ethnic differences with respect to 2D:4D.Hormones, Digit ratio, 2D:4D, Risk behavior, Competition, Competitive behavior, Bidding, Endocrinological economics

    Propellant slosh coupling with bending Interim report

    Get PDF
    Vibrational characteristics of large liquid propellant space vehicl
    • …
    corecore