586 research outputs found
Evaluating the Success of Forest Restoration
Forest restoration projects are occurring throughout the world. Restoration projects can vary greatly depending on the type of forest and the type of stressors that have caused ecosystem degradation and the need for restoration. Because of this variability, and because objective criteria for determining the success of restoration projects are lacking, it is difficult to evaluate the overall success of forest restoration projects. Using ecological standards developed for river restoration as a model, a similar set of standards was applied to forest restoration projects. The standards put forward can be used to evaluate the success of ecosystem restoration universally through the use of site-specific indicators of ecological success. This analysis found that many but not all of the criteria are being used to evaluate forest restoration success. Furthermore, the ecological health of the restored ecosystem is not always prioritized, as socioeconomic values are occasionally favored. Thus, it is important for a set of evaluation criteria primarily related to ecological health to be readily accepted by forest restoration practitioners
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Pituophis ruthveni
Number of Pages: 16Geological SciencesIntegrative Biolog
A-twisted heterotic Landau-Ginzburg models
In this paper, we apply the methods developed in recent work for constructing
A-twisted (2,2) Landau-Ginzburg models to analogous (0,2) models. In
particular, we study (0,2) Landau-Ginzburg models on topologically non-trivial
spaces away from large-radius limits, where one expects to find correlation
function contributions akin to (2,2) curve corrections. Such heterotic theories
admit A- and B-model twists, and exhibit a duality that simultaneously
exchanges the twists and dualizes the gauge bundle. We explore how this duality
operates in heterotic Landau-Ginzburg models, as well as other properties of
these theories, using examples which RG flow to heterotic nonlinear sigma
models as checks on our methods.Comment: 31 pages, LaTe
Leadership Initiatives International Public Health Internship Program
In a nine-month internship for Leadership Initiatives, our team worked together to develop and implement an international public health campaign to address major health concerns prevalent in the region of Bauchi State, Nigeria. Our topic was the issue of selfmedication and its effects among the community. We launched a campaign to collect survey data and develop an educational workshop for the project.https://scholarworks.moreheadstate.edu/celebration_posters_2023/1030/thumbnail.jp
Deformed Quantum Cohomology and (0,2) Mirror Symmetry
We compute instanton corrections to correlators in the genus-zero topological
subsector of a (0,2) supersymmetric gauged linear sigma model with target space
P1xP1, whose left-moving fermions couple to a deformation of the tangent
bundle. We then deduce the theory's chiral ring from these correlators, which
reduces in the limit of zero deformation to the (2,2) ring. Finally, we compare
our results with the computations carried out by Adams et al.[ABS04] and Katz
and Sharpe[KS06]. We find immediate agreement with the latter and an
interesting puzzle in completely matching the chiral ring of the former.Comment: AMSLatex, 30 pages, one eps figure. V4: typos corrected, final
version appearing in JHE
The Effects of Leadership Curricula With and Without Implicit Bias Training on Graduate Medical Education: A Multicenter Randomized Trial
Purpose:
To determine whether a brief leadership curriculum including high-fidelity simulation can improve leadership skills among resident physicians. Method:
This was a double-blind randomized controlled trial among obstetrics and gynecology (OB/GYN) and emergency medicine (EM) residents across 5 academic medical centers from different geographic areas of the United States, 2015–2017. Participants were assigned to 1 of 3 study arms: the LEADS (Leadership Education Advanced During Simulation) curriculum, a shortened TeamSTEPPS (Team Strategies and Tools to Enhance Performance and Patient Safety) curriculum, or as active controls (no leadership curriculum). Active controls were recruited from a separate site and not randomized in order to limit any unintentional introduction of materials from the leadership curricula. The LEADS curriculum was developed in partnership with the Council on Resident Education in Obstetrics and Gynecology and Council of Residency Directors in Emergency Medicine as a novel way to provide a leadership toolkit. Both LEADS and the abbreviated TeamSTEPPS were designed as six 10-minute interactive web-based modules.
The primary outcome of interest was the leadership performance score from the validated Clinical Teamwork Scale instrument measured during standardized high-fidelity simulation scenarios. Secondary outcomes were 9 key components of leadership from the detailed leadership evaluation measured on 5-point Likert scales. Both outcomes were rated by a blinded clinical video reviewer. Results:
One hundred and ten OB/GYN and EM residents participated in this 2-year trial. Participants in both LEADS and TeamSTEPPS had statistically significant improvement in leadership scores from “average” to “good” ranges both immediately and at the 6-month follow-up, while controls remained unchanged in the “average” category throughout the study. There were no differences between the LEADS and TeamSTEPPS curricula with respect to the primary outcome. Conclusions:
Residents who participated in a brief structured leadership training intervention had improved leadership skills that were maintained at 6-month follow-up
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Summer-time use of west coast US National Marine Sanctuaries by migrating sooty shearwaters (Puffinus griseus)
Non-breeding sooty shearwaters are the most abundant seabird in the California Current Large Marine Ecosystem (CCLME) during boreal spring and summer months. This, combined with relatively great energy demands, reliance on patchy, shoaling prey (krill, squid, and forage fishes), and unconstrained mobility free from central-place-foraging demands-make shearwaters useful indicators of ecosystem variability. During 2008 and 2009, we used satellite telemetry to evaluate shearwater ranging patterns throughout the CCLME and specifically within the US Exclusive Economic Zone (EEZ) among birds captured at three locations: Columbia River Plume, WA; Monterey Bay, CA; and Santa Barbara Channel, CA. Shearwaters ranged throughout the entire CCLME from southeast Alaska to southern Baja California, Mexico. Within the EEZ during 2008 and 2009, shearwaters spent 68% and 46% of time over the shelf ( 1000 m), respectively. In 2008 and 2009, shearwaters spent 22% and 25% of their time in the EEZ within the five west coast National Marine Sanctuaries, respectively; high utilization occurred in non-sanctuary waters of the EEZ. Shearwater utilization distribution (based on the Brownian-bridge movement model) among sanctuaries was disproportionate according to sanctuary availability (based on area) within the EEZ. Shearwaters utilized the Monterey Bay sanctuary (2008, 2009) and the Channel Islands sanctuary (2009) disproportionately more than other sanctuaries. Although all five sanctuaries were used by shearwaters, waters outside sanctuary zones appeared significantly more important and likely supported large aggregations of shearwaters. Utilization distributions among individual birds from three discrete capture locations were variable and revealed greater similarity in space-use sharing within capture-location groupings and during 2008 when shearwaters were more aggregated than in 2009. We identified several regional "habitat hotspot" areas, including the Columbia River Plume, Cape Blanco, Monterey Bay, Estero/San Luis Obispo Bays, and the eastern Santa Barbara Channel through the inner Southern California Bight. Published by Elsevier Ltd.Keywords: Protected areas, Indicator species, Satellite telemetry, Marine spatial planning, California Current, Habitat hotspots, Space-use, Seabirds, Ecosystem managemen
Carotenoid skin ornaments as flexible indicators of male foraging behavior in a marine predator: Variation among Mexican colonies of brown booby ( Sula leucogaster )
Carotenoid-dependent ornaments can reflect animals’ diet and foraging behaviors. However, this association should be spatially flexible and variable among populations to account for geographic variation in optimal foraging behaviors. We tested this hypothesis using populations of a marine predator (the brown booby, Sula leucogaster) that forage across a gradient in ocean depth in and near the Gulf of California. Specifically, we quantified green chroma for two skin traits (foot and gular color) and their relationship to foraging location and diet of males, as measured via global positioning system tracking and stable carbon isotope analysis of blood plasma. Our three focal colonies varied in which foraging attributes were linked to carotenoid-rich ornaments. For gular skin, our data showed a shift from a benthic prey-green skin association in the shallow waters in the north to a pelagic prey-green skin association in the deepest waters to the south. Mean foraging trip duration and distance of foraging site from coast also predicted skin coloration in some colonies. Finally, brown booby colonies varied in which trait (foot versus gular skin color) was associated with foraging metrics. Overall, our results indicate that male ornaments reflect quality of diet and foraging–information that may help females select mates who are adapted to local foraging conditions and therefore, are likely to provide better parental care. More broadly, our results stress that diet-dependent ornaments are closely linked to animals’ environments and that we cannot assume ornaments or ornament signal content are ubiquitous within species, even when ornaments appear similar among populations
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