568 research outputs found
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Connecting the dots: Why does what and who came before us matter?
A "Coloring Outside the Lines" editorial column. A review of organizations who pioneered the involvement of persons of color in park stewardship, outdoor recreation, historic preservation, and other forms of place-based conservation.
Recommended from our members
Sea-level rise and vanishing coastal parks: A call to action for park managers and leaders
A "Coloring Outside the Lines" editorial column
Use of Multiple Methods: An Examination of Constraints Effecting Ethnic Minority Visitor Use of National Parks and Management Implications
Understanding outdoor recreation participation and national park visitation by members of ethnic minority groups has been a particular focus of outdoor recreation researchers for the past twenty years. Attracting ethnic minorities, and understanding their recreation needs and interests, demands a multi-faceted approach and sustained commitment not only by the U.S. National Park Service (NPS) but by other resource management agencies as well
The Relationship Between Teacher, School, and Student-Related Factors on the Discretionary Placement of African American Students in Disciplinary Alternative Education Programs.
Exclusionary disciplinary consequences are imposed on students as early as preschool. Students receive punishments such as in-school suspension, out-of-school suspension, and placements in Disciplinary Alternative Education Programs. African American students are most impacted by exclusionary discipline practices isolating them from the environment most conducive to learning. Many negative outcomes are associated with the loss of instructional days including poor academic performance and behavior problems. The purpose of this study is to examine if a relationship exists between teacher, school, and student-related factors on the discretionary placement of African American students in Disciplinary Alternative Education Programs (DAEPs) in Texas P 12 public schools. This quantitative correlational study uses Pearson r correlation coefficient and multiple regression statistical analysis to measure the relationship and degree of predictability of student placement in DAEPs concerning three independent variables: teacher, school, and student-related factors and six sub-variables: ethnicity, gender, enrollment, teacher-to-student ratio, socioeconomic status, and attendance. The study will provide insight into the number of students removed from the traditional instructional setting by way of DAEP placement and an analysis of the demographic factors that may or may not have involvement in those placements. This study seeks to bring awareness to the need for structural reform, equitable purposeful school funding, and professional development diversity training to minimize the time students spend outside of the traditional instructional setting and maximize equitable educational opportunities. Keywords: Disciplinary Alternative Education Programs, in-school suspension, out-of-school suspension, school fundin
15N NMR study of a mixture of uniformly labeled tRNAs
15N NMR spectra were taken of 15N-enriched tRNA extracted from bakers yeast; ammonium sulfate was used as a nitrogen source. The increase in the degree of denaturation of tRNA, which occurs with increase in temperature from 30 degrees C to 70 degrees C, resulted in no large changes in 15N chemical shifts at acidic and neutral pH but quite pronounced changes in proton-15N nuclear Overhauser effects
An Integrative Review of the Literature on Women in the Outdoors
The intent of this integrative reÂview was to examine approaches used in the existing literature about women and the outdoors, to determine the status of current research, and to suggest implicaÂtions for the future
Isolating a violet stimulated luminescence (VSL) signal in quartz suitable for dating:Investigating different thermal treatments and signal integration limits
Flying-Fox Species Density-A Spatial Risk Factor for Hendra Virus Infection in Horses in Eastern Australia
Hendra virus causes sporadic but typically fatal infection in horses and humans in eastern Australia. Fruit-bats of the genus Pteropus (commonly known as flying-foxes) are the natural host of the virus, and the putative source of infection in horses; infected horses are the source of human infection. Effective treatment is lacking in both horses and humans, and notwithstanding the recent availability of a vaccine for horses, exposure risk mitigation remains an important infection control strategy. This study sought to inform risk mitigation by identifying spatial and environmental risk factors for equine infection using multiple analytical approaches to investigate the relationship between plausible variables and reported Hendra virus infection in horses. Spatial autocorrelation (Global Moran’s I) showed significant clustering of equine cases at a distance of 40 km, a distance consistent with the foraging ‘footprint’ of a flying-fox roost, suggesting the latter as a biologically plausible basis for the clustering. Getis-Ord Gi* analysis identified multiple equine infection hot spots along the eastern Australia coast from far north Queensland to central New South Wales, with the largest extending for nearly 300 km from southern Queensland to northern New South Wales. Geographically weighted regression (GWR) showed the density of P. alecto and P. conspicillatus to have the strongest positive correlation with equine case locations, suggesting these species are more likely a source of infection of Hendra virus for horses than P. poliocephalus or P. scapulatus. The density of horses, climate variables and vegetation variables were not found to be a significant risk factors, but the residuals from the GWR suggest that additional unidentified risk factors exist at the property level. Further investigations and comparisons between case and control properties are needed to identify these local risk factors
Flying-Fox Species Density-A Spatial Risk Factor for Hendra Virus Infection in Horses in Eastern Australia
Hendra virus causes sporadic but typically fatal infection in horses and humans in eastern Australia. Fruit-bats of the genus Pteropus (commonly known as flying-foxes) are the natural host of the virus, and the putative source of infection in horses; infected horses are the source of human infection. Effective treatment is lacking in both horses and humans, and notwithstanding the recent availability of a vaccine for horses, exposure risk mitigation remains an important infection control strategy. This study sought to inform risk mitigation by identifying spatial and environmental risk factors for equine infection using multiple analytical approaches to investigate the relationship between plausible variables and reported Hendra virus infection in horses. Spatial autocorrelation (Global Moran’s I) showed significant clustering of equine cases at a distance of 40 km, a distance consistent with the foraging ‘footprint’ of a flying-fox roost, suggesting the latter as a biologically plausible basis for the clustering. Getis-Ord Gi* analysis identified multiple equine infection hot spots along the eastern Australia coast from far north Queensland to central New South Wales, with the largest extending for nearly 300 km from southern Queensland to northern New South Wales. Geographically weighted regression (GWR) showed the density of P. alecto and P. conspicillatus to have the strongest positive correlation with equine case locations, suggesting these species are more likely a source of infection of Hendra virus for horses than P. poliocephalus or P. scapulatus. The density of horses, climate variables and vegetation variables were not found to be a significant risk factors, but the residuals from the GWR suggest that additional unidentified risk factors exist at the property level. Further investigations and comparisons between case and control properties are needed to identify these local risk factors
Mosaic tetracycline resistance genes encoding ribosomal protection proteins
First reported in 2003, mosaic tetracycline resistance genes are a subgroup of the genes encoding ribosomal protection proteins (RPPs). They are formed when two or more RPP-encoding genes recombine resulting in a functional chimera. To date, the majority of mosaic genes are derived from sections of three RPP genes, tet(O), tet(W) and tet(32), with others comprising tet(M) and tet(S). In this first review of mosaic genes, we report on their structure, diversity and prevalence, and suggest that these genes may be responsible for an under-reported contribution to tetracycline resistance in bacteria
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