Keeping Up-to-Date with Bayes (Abstract)

Bayes’ theorem, a rule for updating probabilities as new information is obtained, may be over two centuries old but it has been the driving force behind many of the most significant recent advances in statistics and other sciences

COVID and Coraje: Negotiating Latinx Immigrant Experiences of the Pandemic

11 pagesIn this paper, we compare observations from engaged ethnography and participant observation with Latinx immigrants in Colorado and Oregon during the COVID-19 pandemic. In particular, we focus on lived experiences of structural vulnerability, as well as the ways in which COVID-related disparities have become internalized as stigma and have amplified immigrants’ experiences of stress, anxiety, and “aislamiento,” or isolation. Indeed, Latinx immigrants in the US—especially those without legal status and those in mixed-status families—face a range of exclusions, discourses of blame and (un)deservingness, and forms of precarity that have contributed to disproportionate risk, suffering, and fear as the pandemic has unfolded. At the same time, by laying bare blatant injustices and racist exclusions, the pandemic has prompted some Latinx immigrants in our research and advocacy sites to enact new forms of resistance and contestation. We detail the range of ways which, in efforts to stay healthy and to challenge discriminatory portrayals of themselves as either disease carriers unlikely to heed public health warnings or as “public charges,” they insist upon their own rights, worth, belonging, and dignity. Finally, we conclude by discussing some of the ways in which these two U.S. states—and the health and social service organizations working with Latinx communities within them—have attempted to address coronavirus disparities among Latinx communities, showing how particular approaches can assuage short-term suffering and improve access to healthcare and other social supports, while others may create a new set of barriers to access for already marginalized communitiesNational Science Foundatio

Immigrant Communities and the Public Charge Rule

8 pages

The Kinematics and Dynamics of the Globular Clusters and the Planetary Nebulae of NGC 5128

A new kinematic and dynamic study of the halo of the giant elliptical galaxy, NGC 5128, is presented. From a spectroscopically confirmed sample of 340 globular clusters and 780 planetary nebulae, the rotation amplitude, rotation axis, velocity dispersion, and the total dynamical mass are determined for the halo of NGC 5128. The globular cluster kinematics were searched for both radial dependence and metallicity dependence by subdividing the globular cluster sample into 158 metal-rich ([Fe/H] > -1.0) and 178 metal-poor ([Fe/H] < -1.0) globular clusters. Our results show the kinematics of the metal-rich and metal-poor subpopulations are quite similar. The kinematics are compared to the planetary nebula population where differences are apparent in the outer regions of the halo. The total mass of NGC 5128 is found using the Tracer Mass estimator (Evans et al. 2003), to determine the mass supported by internal random motions, and the spherical component of the Jeans equation to determine the mass supported by rotation. We find a total mass of (1.0+/-0.2) x 10^(12) Msun from the planetary nebulae data out to a projected radius of 90 kpc and (1.3+/-0.5) x 10^(12) Msun from the globular clusters out to a projected radius of 50 kpc. Lastly, we present a new and homogeneous catalog of known globular clusters in NGC 5128. This catalog combines all previous definitive cluster identifications from radial velocity studies and HST imaging studies, as well as 80 new globular clusters from a study of M.A. Beasley et al. (2007, in preparation).Comment: Accepted in the Astronomical Journal,52 pages, 13 figures, 6 tables - Changes made to Table 1 from originally submitted 0704.118

Examining Design and Inter-Rater Reliability of a Rubric Measuring Research Quality across Multiple Disciplines

The paper presents a rubric to help evaluate the quality of research projects. The rubric was applied in a competition across a variety of disciplines during a two-day research symposium at one institution in the southwest region of the United States of America. It was collaboratively designed by a faculty committee at the institution and was administered to 204 undergraduate, master, and doctoral oral presentations by approximately 167 different evaluators. No training or norming of the rubric was given to 147 of the evaluators prior to the competition. The findings of the inter-rater reliability analysis reveal substantial agreement among the judges, which contradicts literature describing the fact that formal norming must occur prior to seeing substantial levels of inter-rater reliability. By presenting the rubric along with the methodology used in its design and evaluation, it is hoped that others will find this to be a useful tool for evaluating documents and for teaching research methods. Accessed 15,405 times on https://pareonline.net from May 29, 2009 to December 31, 2019. For downloads from January 1, 2020 forward, please click on the PlumX Metrics link to the right

Protecting Undocumented Students Post-Election

5 pages; news article from a websit

Social Determinants of Health and the Use of Community-Based Rehabilitation Following Stroke: Methodologic Considerations

Social determinants are non-medical factors frequently used to study disparities in health outcomes but have not been widely explored in regard to rehabilitation services utilization. In our NICHD-funded study, Access to and Effectiveness of Community-Based Rehabilitation After Stroke, we reviewed several conceptual models and frameworks for the study of social determinants to inform our work. The overall objective of this special communication is to describe our approach to identifying, selecting, and utilizing area-level measures of social determinants to explore the relationship between social determinants and rehabilitation use. We present our methods for developing a conceptual model and a methodological framework for the selection of social determinant measures relevant to rehabilitation use and an overview of publicly available data on social determinants. We then discuss methodological challenges encountered and future directions for this work

Basal channels drive active surface hydrology and transverse ice shelf fracture

Ice shelves control sea-level rise through frictional resistance, which slows the seaward flow of grounded glacial ice. Evidence from around Antarctica indicates that ice shelves are thinning and weakening, primarily driven by warm ocean water entering into the shelf cavities. We have identified a mechanism for ice shelf destabilization where basal channels underneath the shelves cause ice thinning that drives fracture perpendicular to flow. These channels also result in ice surface deformation, which diverts supraglacial rivers into the transverse fractures. We report direct evidence that a major 2016 calving event at Nansen Ice Shelf in the Ross Sea was the result of fracture driven by such channelized thinning and demonstrate that similar basal channel–driven transverse fractures occur elsewhere in Greenland and Antarctica. In the event of increased basal and surface melt resulting from rising ocean and air temperatures, ice shelves will become increasingly vulnerable to these tandem effects of basal channel destabilization

Exposure and potential effects of pesticides and pharmaceuticals in protected streams of the US National park Service southeast region

Globally, protected areas offer refugia for a broad range of taxa including threatened and endangered species. In the United States (US), the National Park Service (NPS) manages public lands to preserve biodiversity, but increasing park visitation and development of surrounding landscapes increase exposure to and effects from bioactive contaminants. The risk (exposure and hazard) to NPS protected-stream ecosystems within the highly urbanized southeast region (SER) from bioactive contaminants was assessed in five systems based on 334 pesticide and pharmaceutical analytes in water and 119 pesticides in sediment. Contaminant mixtures were common across all sampled systems, with approximately 24% of the unique analytes (80/334) detected at least once and 15% (49/334) detected in half of the surface-water samples. Pharmaceuticals were observed more frequently than pesticides, consistent with riparian buffers and concomitant spatial separation from non-point pesticide sources in four of the systems. To extrapolate exposure data to biological effects space, site-specific cumulative exposure-activity ratios (REAR) were calculated for detected surface-water contaminants with available ToxCast data; common exceedances of a 0.001 REAR effects-screening threshold raise concerns for molecular toxicity and possible, sub-lethal effects to non-target, aquatic vertebrates. The results illustrate the need for continued management of protected resources to reduce contaminant exposure and preserve habitat quality, including prioritization of conservation practices (riparian buffers) near stream corridors and increased engagement with upstream/up-gradient property owners and municipal wastewater facilities