On Galactic density modeling in the presence of dust extinction

Inferences about the spatial density or phase-space structure of stellar populations in the Milky Way require a precise determination of the effective survey volume. The volume observed by surveys such as Gaia or near-infrared spectroscopic surveys, which have good coverage of the Galactic mid-plane region, is highly complex because of the abundant small-scale structure in the three-dimensional interstellar dust extinction. We introduce a novel framework for analyzing the importance of small-scale structure in the extinction. This formalism demonstrates that the spatially-complex effect of extinction on the selection function of a pencil-beam or contiguous sky survey is equivalent to a low-pass filtering of the extinction-affected selection function with the smooth density field. We find that the angular resolution of current 3D extinction maps is sufficient for analyzing Gaia sub-samples of millions of stars. However, the current distance resolution is inadequate and needs to be improved by an order of magnitude, especially in the inner Galaxy. We also present a practical and efficient method for properly taking the effect of extinction into account in analyses of Galactic structure through an effective selection function. We illustrate its use with the selection function of red-clump stars in APOGEE using and comparing a variety of current 3D extinction maps.Comment: Code available at https://github.com/jobovy/mwdust and at https://github.com/jobovy/apogee-map

Free-Enterprise Farming on Grasslands in Central NSW, Australia

A pathway is described in developing and improving the pastures on family-owned sheep and beef properties at sites near Blayney in central NSW. Initially, the twin approach of sowing perennial grasses, predominantly phalaris (Phalaris aquatica) with subterranean clover (Trifolium subterraneum) plus the recommended addition of superphosphate fertiliser, was closely followed but within a decade ill-thrift in pastures and livestock occurred. Once the core problem of soil acidity was recognised, steps were taken to overcome this constraint with applications of lime. However, an additional modification involving the application of gypsum with lime had to be sorted out and applied. This approach is explained. While recent drought conditions on the Central Tablelands/Slopes have been a factor in reducing the productivity of district pastures, an important part of the problem is a consequence of many landowners not understanding the basic principles of plant and livestock nutrition, an unwillingness of some research/advisory agronomists to recognise the expertise of successful producers, and the implementation of various farmer subsidy and support schemes that appear to reward dependent producers rather than encouraging independence

Active versus passive: evaluating the effectiveness of inoculation techniques in relation to misinformation about climate change

Objective: The current study evaluated whether an active inoculation (interactive skill development) or a passive inoculation message (provision of information) were effective tools for conferring resistance to misinformation about climate science in the context of extreme weather events. Method: Participants were randomly assigned to one of the three conditions: a control condition (no training); a passive inoculation condition; or an active inoculation condition. Participants completed demographic questions followed by training or no training and then evaluated a misinformation and factual article for reliability and persuasiveness. Results: Participants in the active inoculation condition rated the reliability and persuasiveness of the misinformation article and the reliability of the factual article lower than participants in the control condition. Participants in the passive inoculation training did not rate the reliability and persuasiveness of a misinformation and factual article significantly differently to those in the control condition. When factors such as ideological worldview and climate change beliefs were controlled for however, the inoculation interventions had no significant effect on ratings of reliability and persuasiveness for a misinformation or factual article. Conclusion: Inoculation seems to be a promising method of preventing the acceptance of misinformation on climate science. However, this analysis highlights that more investigation is required in order to determine the most effective inoculation training design

Re-imagination and re-design in physical education: implicit and explicit models in England and Wales

Starting with the questions “does physical education (PE) achieve desirable outcomes for the majority of youngsters who experience it?” and, as a corollary, “does it need to be re-imagined and re-designed?”, this chapter explores what we refer to as explicit and implicit models of PE past and present, including the alleged shortcomings of the subject that each model is intended to address. In the process we note that one implicit model–the so-called (sport-based) multi-activity model revolving around various “activity areas”, such as games, athletic activities, gymnastic activities, swimming, dance, and outdoor and adventurous activities, but dominated by games–continues to dominate the practice of PE, having seen off almost all competitors, with the notable exception of another implicit model in the form of health-related exercise. That said, to the extent that models such as TGfU, Sport Education and Co-operative Learning are being advocated at various physical education teacher education (PETE) institutions, attempts to re-imagine and re-design remain current, despite the changing neo-liberal landscape of PETE itself. Nevertheless, when reflecting upon the fortunes of the various explicit and implicit models of PE, it seems that, while these have increasingly been the subject of research and by degrees have taken root in academic PE, they largely have failed to do so in schools, much beyond the sphere of influence of academic institutions advocating particular models with their students and beyond individual units of work

Lived Experiences of Attorneys Who Represent Transgender Clients in Prison Placement

Researchers have indicated that there are no formal guidelines for placing convicted transgender felons in the United States in correctional facilities and addressing their post-placement medical care and treatment. The problem is that inappropriate placement may lead to the discrimination of transgender offenders; it may also put them in situations that threaten their safety. Attorneys are legal advocates assigned to defend and protect the rights of their clients during the trial and sentencing phase when correctional placement is determined. The purpose of this hermeneutic, phenomenological study was to explore the lived experiences of attorneys who represent transgender clients during the legal process of determining their correctional placement. Heider\u27s attribution theory and de Lauretis\u27s queer theory provided a conceptual framework for this study. Participants were 5 attorneys and 1 legal assistant in a large, urban county in Texas. Data were collected using semistructured interviews and analyzed using thematic, linguistic content analysis. The findings from this study suggested that the participant attorneys believed that gender self-identification may reduce the amount of discrimination that transgender clients face in the U.S. prison system and is the first step in determining safe and appropriate housing placement for transgender felons. The findings further suggested that judges and administrators serving in the U.S. criminal justice system need additional education about the transgender population so that sentencing decisions can effectively and safely house the transgender inmate population. The results of this study affect social change by providing wide-ranging administrative changes that should be made in order to address the overall needs of transgender individuals across the U.S. criminal justice system

'My expectations remain the same. The student has to be competent to practise' : practice assessor perspectives on the new social work degree qualification in England

Research has emphasized the importance of practice learning to social work qualifying education but has tended to feature social work educator and student perspectives more strongly than the views of those responsible for assessing students' practice in the field. This article draws on 195 responses to a postal questionnaire sent at two points in time to practice assessors working with students from nine social work qualifying programmes run in six higher education institutions collected as part of the evaluation of the new social work degree qualification in England. While practice assessors described changes in their role and in the opportunities available to students, they also emphasized continuities, particularly in the skills that they expected students to possess. The key difficulty they identified was the heavy workload resulting from combining their role as practice assessors with their other responsibilities at work. Increases in the number of social work students and changes to the organization of services are likely to create further pressures on practice assessors. Given that these issues are faced by a number of different professions, the article concludes that there is potential for future studies to look at the experiences of practice educators across different professional qualifying programmes

A Data-Based Approach for Selecting Pre- and Intra-Operative Language Mapping Tasks

Background: Pre- and intra-operative language mapping in neurosurgery patients frequently involves an object naming task. The choice of the optimal object naming paradigm remains challenging due to lack of normative data and standardization in mapping practices. The aim of this study was to identify object naming paradigms that robustly and consistently activate classical language regions and could therefore be used to improve the sensitivity of language mapping in brain tumor and epilepsy patients. Methods: Functional magnetic resonance imaging (fMRI) data from two independent groups of healthy controls (total = 79) were used to generate threshold-weighted voxel-based consistency maps. This novel approach allowed us to compare inter-subject consistency of activation for naming single objects in the visual and auditory modality and naming two objects in a phrase or a sentence. Results: We found that the consistency of activation in language regions was greater for naming two objects per picture than one object per picture, even when controlling for the number of names produced in 5 s. Conclusion: More consistent activation in language areas for naming two objects compared to one object suggests that two-object naming tasks may be more suitable for delimiting language eloquent regions with pre- and intra-operative language testing. More broadly, we propose that the functional specificity of brain mapping paradigms for a whole range of different linguistic and non-linguistic functions could be enhanced by referring to databased models of inter-subject consistency and variability in typical and atypical brain responses

Knowing practice in English teaching? Research challenges in representing the professional practice of English teachers

This article problematises representations of professional practice. It investigates assumptions behind received accounts of professional practice, including professional standards that purportedly capture what accomplished English teachers &ldquo;should know and be able to do&rdquo;, &ldquo;scientific&rdquo; studies that construct accounts of classrooms from the standpoint of academic researchers, and narratives written by teachers that claim to explore dimensions of classroom teaching that elude outside observers. Especially significant are attempts by practitioner researchers to develop accounts of their professional practice vis-a-vis constructions of their work from other standpoints. We argue that it is timely for practitioner researchers to reflexively examine the conditions for producing such accounts, and to address the question of the validity of their knowledge claims. Yet this is also &ndash; crucially &ndash; more than an epistemological issue, but one that requires acknowledging the primacy of practice for engaging with the complexities of classroom settings. This article gives an account of our ongoing efforts to develop forms of representation that might begin to do justice to the complexities of practice in comparison with accepted accounts of what English teachers know and do. We intend it to be read as a position paper which outlines a framework for research on English teaching as a dynamic culture practice. <br /

Concerns and Recommendations on Implementation of the Workforce Investment Act of 1998 in Boston: Summary of the Policy Roundtable: Local Implementation of the Workforce Investment Act and its Impact on Latinos and other Communities

The primary public funding vehicle for employment training and workforce education is in the midst of radical change. The transition from the Job Training Partnership Act of 1982 to the Workforce. Investment Act of 1998 (WIA) will have a dramatic impact on providers and clients alike. This impact is likely to be especially challenging for programs targeted to the hardest to serve populations. For example, many practitioners are worried that members of certain groups will be more likely to be lost and not receive needed services under the voucher system that will be the primary payment method under WIA. Linguistic minorities, a population requiring culturally competent, comprehensive services, are one diverse group that stands to fare poorly under WIA