237,998 research outputs found

    REFORMING THE DELIVERY OF PUBLIC DENTAL SERVICES IN IRELAND: POTENTIAL COST IMPLICATIONS. ESRI RESEARCH SERIES NUMBER 80 APRIL 2019

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    This report details the results of an analysis of the potential cost implications of proposed changes to aspects of the model of delivery of publicly-financed dental services in Ireland, as set out in the new National Oral Health Policy (Department of Health, 2018b). Currently, dental services in Ireland are financed and delivered in a mixed public-private system, with most individuals paying out-of-pocket fees to independent dental practitioners. The public system currently finances the delivery of dental healthcare services to adult medical cardholders via the Dental Treatment Services Scheme (DTSS); to non-medical cardholder eligible adults via the Treatment Benefit Scheme (TBS); and to children and adults requiring special and complex care via the Public Dental Service (PDS). This report deals with proposed changes to the delivery of preventive dental healthcare services under the DTSS and PDS

    Surprising comparative properties of monetary models : results from a new model database

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    In this paper we investigate the comparative properties of empirically-estimated monetary models of the U.S. economy using a new database of models designed for such investigations. We focus on three representative models due to Christiano, Eichenbaum, Evans (2005), Smets and Wouters (2007) and Taylor (1993a). Although these models differ in terms of structure, estimation method, sample period, and data vintage, we find surprisingly similar economic impacts of unanticipated changes in the federal funds rate. However, optimized monetary policy rules differ across models and lack robustness. Model averaging offers an effective strategy for improving the robustness of policy rules

    Dropout Model Evaluation in MOOCs

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    The field of learning analytics needs to adopt a more rigorous approach for predictive model evaluation that matches the complex practice of model-building. In this work, we present a procedure to statistically test hypotheses about model performance which goes beyond the state-of-the-practice in the community to analyze both algorithms and feature extraction methods from raw data. We apply this method to a series of algorithms and feature sets derived from a large sample of Massive Open Online Courses (MOOCs). While a complete comparison of all potential modeling approaches is beyond the scope of this paper, we show that this approach reveals a large gap in dropout prediction performance between forum-, assignment-, and clickstream-based feature extraction methods, where the latter is significantly better than the former two, which are in turn indistinguishable from one another. This work has methodological implications for evaluating predictive or AI-based models of student success, and practical implications for the design and targeting of at-risk student models and interventions

    The Evaluation of Route Guidance Systems

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    BACKGROUND We were commissioned by the Transport and Road Research Laboratory to: "collaborate with the German government and their representatives who are responsible for conducting the LISB trial in Berlin in order to produce an agreed methodology, which is acceptable in both Germany and the UK, for assessing the automatic route guidance systems which will be provided in Berlin and London." The brief suggested a number of aspects to be included, and required detailed proposals, timescales and costs for implementation in London. 1.1.2 The background to the brief lies in decisions to introduce pilot automatic route guidance systems in the two cities. The principles of the systems are similar, and have been described in detail elsewhere (Jeffery, 1987). In brief, they involve : (i) a central computer which retains information on a specified road network, which is updated using real time information from the equipment users; (ii) infra red beacons at selected junctions which transmit information to equipped vehicles and receive information from those vehicles; (iii) in-vehicle equipment which includes a dead-reckoning system for position finding, a device for requesting guidance and specifying the destination, a micro-computer which selects the optimal route, and a display which indicates when a turn is required on the main network, and the compass direction and distance to the final destination; iv) transmission from the equipped vehicles of origin, requested destination, links used since passing the last beacon and, for each link, the time of entry and departure and time spent delayed. It is this travel time information which is used to update the central computer's knowledge of the best routes. (Continues..

    Why do I like people like me?

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    In many dimensions the ability to assess knowledge depends critically on the observer's own knowledge of that dimension. Building on this feature, this paper offers both theoretical and empirical evidence showing that, in those tasks where multidisciplinary knowledge is required, evaluations exhibit a similar-to-me effect: candidates who excel in the same dimensions as the evaluator tend to be ranked relatively higher. It is also shown that, if races or genders differ in their distribution of ability, group discrimination will arise unless evaluators (i) are well informed about the extent of intergroup differences and (ii) they may condition their assessments on candidates' group belonging
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