scholarly journals Identifying and Ranking Areas of Relative Need for New Public Dental Clinics Using a State-of-the-Art Data Simulation Approach

2006 ◽  
Vol 12 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Yevgeni Dudko ◽  
◽  
Dennis Robey ◽  
Estie Kruger ◽  
Marc Tennant
2020 ◽  
Vol 493 (3) ◽  
pp. 4078-4093 ◽  
Author(s):  
Samuel R Hinton ◽  
Cullan Howlett ◽  
Tamara M Davis

ABSTRACT We compare the performance of four state-of-the-art models for extracting isotropic measurements of the baryon acoustic oscillation (BAO) scale. To do this, we created a new, public, modular code barry, which contains data sets, model fitting tools, and model implementations incorporating different descriptions of non-linear physics and algorithms for isolating the BAO feature. These are then evaluated for bias, correlation, and fitting strength using mock power spectra and correlation functions developed for the Sloan Digital Sky Survey Data Release 12. Our main findings are as follows: (1) all of the models can recover unbiased constraints when fit to the pre- and post-reconstruction simulations. (2) Models that provide physical descriptions of the damping of the BAO feature (using e.g. standard perturbation or effective-field theory arguments) report smaller errors on average, although the distribution of mock χ2 values indicates these are underestimated. (3) Allowing the BAO damping scale to vary can provide tighter constraints for some mocks, but is an artificial improvement that only arises when noise randomly sharpens the BAO peak. (4) Unlike recent claims in the literature when utilizing a BAO Extractor technique, we find no improvement in the accuracy of the recovered BAO scale. (5) We implement a procedure for combining all models into a single consensus result that improves over the standard method without obviously underestimating the uncertainties. Overall, barry provides a framework for performing the cosmological analyses for upcoming surveys, and for rapidly testing and validating new models.


2017 ◽  
Vol 12 (1) ◽  
pp. 11-16
Author(s):  
Yevgeni Dudko ◽  
Dennis E Robey ◽  
Estie Kruger ◽  
Marc Tennant

Background: Lower socioeconomic groups and country residents are more likely to experience dental disease. Previous research has found that it is generally more cost effective to provide subsidised dental care through publically employed dentists when compared to subcontracting the work out to the private sector. Objective: The primary objective of this study was to identify and rank areas of relative need for new public dental care facilities across Australia. The secondary objective was to gauge how many of these areas arelocated in the vicinity of an existing public hospital (medical) with a view to utilise existing infrastructure for future service rollout. Methods: Usual resident population, employment status and socioeconomic distribution data was downloaded from the Australian Bureau of Statistics website at Statistical Area 1 level. A mathematical weighing formula was applied to those variables, which subsequently allowed for ranking of the results based on magnitude of the product values. The findings were considered in terms of proximity to existing public health infrastructure. Results: A total of 49 SA1 areas were identified and preselected as potential sites for new public dental clinics across Australia. Eighty per cent of the identified areas of relative need were located outside metropolitanareas. Fifty per cent of those were found to be in close proximity to an existing public hospital (medical). Conclusion: Offering subsidised dental care through existing public hospitals may be an option. Such an approach has a potential to improve access to subsidised dental care in regional centres while minimising capitalexpenditure on infrastructure. Abbreviations: ABS – Australian Bureau of Statistics; ASGS – Australian Statistical Geography Standard; SEIFA – Socio-Economic Indexes for Areas


2006 ◽  
Vol 514-516 ◽  
pp. 1678-1681 ◽  
Author(s):  
Nuno Franco ◽  
Eduardo Alves ◽  
Nuno P. Barradas

The Hotbird is a state of the art X-ray laboratory for advanced materials characterisation, installed at ITN since 1999. Several major improvements in its capabilities have been implemented. On the one hand, new hardware developments have extended the applications that can be studied and on the other hand, new software has enabled both enhanced automated control of the system, and improved data analysis that leads to extraction of further precise information from the data. One improvement was the implementation of the x-ray reflectometry (XRR) technique, which is a major expansion of the Hotbird capabilities. XRR is well-suited to characterise film thickness and roughness with high resolution. Furthermore, several optics improvements, such as a Göbel mirror and monochromators were introduced. The combination of this optics allows one to use either a higher intensity beam (orders of magnitude better) or a higher resolution beam configuration. A new high-temperature chamber was developed, which allows one to perform in-situ experiments with excellent temperature control up to 800 °C, in all possible configurations. Data simulation/fitting analysis software for XRR was developed. Also, to control the diffractometer and perform experiments, a new user-friendly software package was developed. In order to illustrate the Hotbird capabilities improvements, several experimental examples will be described.


2021 ◽  
Vol 22 (1) ◽  
pp. 201-262
Author(s):  
Mark Spottswood

Abstract This Article explores settlement incentives under three different burden of proof rules. The conventional burden of proof is a discontinuous step-function, jumping from no damages to full damages at the 0.5 jury confidence level. Continuous burdens of proof, by contrast, would permit sanctions to steadily increase as juror confidence rises from 0 to 1, with no discontinuity. Linear burdens, which have received extensive attention in prior literature, escalate sanctions steadily across the whole range of confidence levels, while the logistic burden takes a nonlinear form. Using a data simulation approach guided by the empirical realities of American civil litigation, I consider the incentives that each of these rules creates for parties contemplating settlement, using a model in which parties make divergent forecasts of their expected outcomes at trial due to optimism bias. Based on this analysis, I conclude that a linear burden would likely raise our settlement rate by a modest amount, except in very large cases and in “easy” cases, in which an unbiased person would predict that a trial factfinder would have a level of confidence in liability quite close to either zero or one. I also compare the expected error rate of the settlements that each rule produces, and find that the linear rule modestly lowers the expected error rate of settlement overall, although this benefit does not hold for easy cases or those with very high damages. Lastly, I conduct a similar analysis for the logistic burden, finding that it induces a similar quality and quantity of settlements as we currently achieve using conventional burdens.


2018 ◽  
Vol 85 (1) ◽  
pp. 11-27 ◽  
Author(s):  
Renate Reiter ◽  
Tanja Klenk

For more than 30 years, New Public Management has been the most popular label for public sector reform. For more than 15 years, however, New Public Management has also been heavily criticized. There is a growing trend to consider New Public Management as ‘dead’ and claim the evolution of a new reform trend, called post-New Public Management. Like New Public Management, post-New Public Management is an umbrella term that is used to prescribe and/or describe different reform trends. The aim of this article is to give a state of the art of recent post-New Public Management literature by discerning the manifold meanings of this label. For this purpose, a systematic review of 84 articles published in peer-reviewed high-quality journals has been conducted. The article shows that, so far, the post-New Public Management idea has been very influential as an ‘ideational weapon’ to indicate a crisis of the New Public Management model. The use of the post-New Public Management idea as a blueprint for future reform, however, still needs further treatment. Points for practitioners Since the 1980s, New Public Management has served as a toolbox for the reform of public administrations all over the Organisation for Economic Co-operation and Development and beyond. In the course of its ‘pick and choose’ application, New Public Management has become an object of manifold criticism. In order to overcome the New Public Management ‘leftovers’, reformers of public management have reintroduced old concepts or invented new reform tools since the late 1990s. Systematically reviewing both theoretical and empirical academic works on this ‘post-New Public Management’ movement, we – inter alia – shed light on the question of whether ‘post-New Public Management’ can be considered a (new) model for practitioners of public management reform.


1981 ◽  
Vol 57 (6) ◽  
pp. 279-283
Author(s):  
C. H. Meng ◽  
J. D. A. Williamson ◽  
P. L. Cottell

A simple analytical approach to estimating the performance of logging machine prototypes was compared with computer simulation, specifically the program CANLOG. Results from the two methods did not differ appreciably, despite the greater complexity and cost of the simulation approach. However, neither method was particularly reliable, as judged from comparison with available field data. Simulation may be an effective alternative where considerable interaction exists between machines or machine functions in operation, where variable distributions are given substance through empirical studies, and where program documentation is sufficient to place control of the procedure in the hands of the user.


2013 ◽  
Vol 769 ◽  
pp. 19-26 ◽  
Author(s):  
Paryanto ◽  
Jochen Merhof ◽  
Matthias Brossog ◽  
Christian Fischer

Commonly, a modelling and simulation approach is used for parameter optimization and system behavior analysis of assembly system components. However, such simulation approaches are often not well integrated or its analysis is still based on a specific physical domain. This paper proposes an integrated simulation approach that can be used for designing, analyzing and optimizing the entire physical domain as well as the control system of mechatronic components in an assembly system. The state-of-the-art, requirements, our concept and the limitations of an integrated simulation approach are explained in this paper. A case study of the development of conveyor systems using the multi-domain simulation tool OpenModelica is also presented. On-going research shows that the integrated approach offers various benefits such as reduced development time and minimized errors, as well as maintenance during the commissioning process.


2019 ◽  
Author(s):  
Mathieu Gravey ◽  
Grégoire Mariethoz

Abstract. Multiple-point geostatistics enable the realistic simulation of complex spatial structures by inferring statistics from a training image. These methods are typically computationally expensive and require complex algorithmic parametrizations. The approach that is presented in this paper is easier to use than existing algorithms, as it requires few independent algorithmic parameters. It is natively designed for handling continuous variables, and quickly implemented by capitalizing on standard libraries. The algorithm can handle incomplete training images of any dimensionality, with categorical or/and continuous variables, and stationarity is not explicitly required. It is possible to perform unconditional or conditional simulations, even with exhaustively informed covariates. The method provides new degrees of freedom by allowing kernel weighting for pattern matching. Computationally, it is adapted to modern architectures and runs in constant time. The approach is benchmarked against a state-of-the-art method. An efficient open-source implementation of the algorithm is released and can be found here (https://github.com/GAIA-UNIL/G2S), to promote reuse and further evolution.


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