6,354 research outputs found
Dynamical Models for the Formation of Elephant Trunks in H II Regions
The formation of pillars of dense gas at the boundaries of H II Regions is
investigated with hydrodynamical numerical simulations including ionising
radiation from a point source. We show that shadowing of ionising radiation by
an inhomogeneous density field is capable of forming so-called elephant trunks
(pillars of dense gas as in e.g. M16) without the assistance of self-gravity,
or of ionisation front and cooling instabilities. A large simulation of a
density field containing randomly generated clumps of gas is shown to naturally
generate elephant trunks with certain clump configurations. These
configurations are simulated in isolation and analysed in detail to show the
formation mechanism and determine possible observational signatures. Pillars
formed by the shadowing mechanism are shown to have rather different velocity
profiles depending on the initial gas configuration, but asymmetries mean that
the profiles also vary significantly with perspective, limiting their ability
to discriminate between formation scenarios. Neutral and molecular gas cooling
are shown to have a strong effect on these results.Comment: 17 pages, 11 figures, MNRAS. Minor revisions: typos corrected,
figures re-ordered to match published versio
Towards an Indigenous Leadership Paradigm for Dismantling Ableism
The purpose of this article is to propose an Indigenous leadership paradigm for dismantling ableism. I begin by defining ableism within the context of school leadership, then apply an Indigenous ontological and epistemological framework to strategies educational leaders can use to dismantle cultures of ableism within school communities
The World Watches: How Media Coverage of American Police Violence Influences The Perspectives of South Louisiana\u27s Community Members
Police violence towards African Americans in the United States have gained greater international attention in this decade due to social media and increased media coverage. Alton Sterlingâs death in Baton Rouge in the summer of 2016 resulted in local pushes for criminal and racial justice reform. However, international community members were largely absent from both community dialogue and action. Keeping this in mind, my research question is as follows: To what extent does media coverage of American police violence impact the perspectives of south Louisianaâs international community members with regards to African Americans and American society. Through qualitative research methodology, this study will illustrate the extent to which media coverage of police violence shaped international community membersâ perspectives.
The six-week research study lasted from January to March 2017, with Baton Rouge and New Orleans the two main locations. Twenty-three respondents contributed through either semi-structured interviews or surveys. Respondents were asked about domestic and media coverage of American police violence, its influence on their perspectives regarding African Americans and American society, and the impact that the Alton Sterling incident had on their perspectives. This study reveals factors such as social identity and interpretation of media shape their perspectives more than media coverage alone
Examining the Relationship between Medical Student Satisfaction and Academic Performance in a Pre-Clinical, Flipped-Classroom Curriculum
Medical schools are tasked with the responsibility of facilitating the acquisition of the specific vernacular, skill set, and reasoning capabilities of a physician for a group of individuals with a mĂ©lange of diverse experiences. Determining the best methods to train physicians is thus a challenge for those in medical education. Starting with the class of 2021, flipped classroom teaching and learning activities dominate Wright State University Boonshoft School of Medicineâs (WSU-BSOM) curriculum for MS1s and MS2s. This new curriculum is under constant evaluation to make sure it is best serving Boonshoft students. However, evaluating student evaluations on course satisfaction is difficult due to the amount of noise in qualitative data. We thus evaluated the quantitative and qualitative data from the surveys completed by the class of 2021 and correlated them with their NBME and final exam results from each module. It was found that a statistically significant relationship exists between student satisfaction and performance on final exams for most modules in this curriculum. Further studies are needed to create a framework for removing noise from these evaluations so those who design the curriculum may strive to improve student satisfaction in ways that will most improve student performance
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