2,878 research outputs found

    Touring Colonial America: Review of Edward Kimber, \u3ci\u3eItinerant Observation in America\u3c/i\u3e, ed. Kevin J. Hayes.

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    Traveling to the colonies in 1742 at age twenty-three, young Edward Kimber embarked on what was no doubt the adventure of his life. Son of Isaac Kimber, editor of the London Magazine from 1732 to 1755, Edward had grown up around the publishing industry and was keenly aware of the public appetite for reading material. Like nearly all literate travelers of his day, but perhaps more aware than many that his travels in the colonies would furnish material for later publication, Kimber dutifully kept a journal record of his observations and experiences. His American adventure yielded literary fruit from 1743 until 1746 in both prose and poetry, and two of his later novels incorporated American motifs and references. Itinerant Observations in America was the longest and most important product of Kimber\u27s American experiences. Kevin J. Hayes\u27s edition of this work provides the complete text of the Observations as it appeared in the London Magazine and publishes fourteen poems written by Kimber while in America that appeared in the London Magazine from 1743 through 1744. Hayes reprints Kimber\u27s editorial notes and provides additional and extensive annotations of historical, geographical, and literary references in the text. In his introduction, Hayes discusses the biographical and historical context for Kimber\u27s work, analyzes Kimber\u27s composition and revision of the Observations, attributes five works to Kimber not previously assigned to him, traces Kimber\u27s recognition and literary reputation, and offers a brief assessment of the literary merits of the Observations

    Pauli Murray: Human Rights Visionary and Trailblazer

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    Cosmic-ray neutron probes on the high plains of Nebraska: applications to large scale agriculture

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    Cosmic-rays have some surprising applications in precision agriculture. The cosmic-ray neutron probe (CRNP), when implemented as a roving instrument, can be used to create spatial maps of soil moisture, and from these maps soil hydraulic properties can be inferred. In this work, we combine data from a mobile CRNP with laboratory samples to make spatial predictions of soil hydraulic properties for select field sites around the state of Nebraska. These maps, which focus on wilting point and field capacity, can, in turn, be used to determine the optimal timing and application rates for irrigation farmers, many of whom have the capability to finely tune the spatial distribution of water applied on a field, but currently lack the requisite data to support such management practices. We find that 4 CRNP soil moisture maps are adequate to describe the dominant underlying spatial structure of the field (\u3e75% of variability) using Empirical Orthogonal Functions. The CRNP soil moisture maps combined with an elevation layer provided strong statistical predictors of laboratory measured soil hydraulic properties. The economic viability of the method depends on numerous local cost factors but rising demand for water resources may dictate the need for innovative approaches such as this one to reduce future water use

    Conspiracy theorists helped the Parkland students keep gun control on the national agenda

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    In the wake of the mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida, gun control has remained on the political and media agendas for far longer than has been the case following similar events in the past. Joseph E. Uscinski, Darin DeWitt, and Matthew D. Atkinson argue that this shooting has continued to capture the nation's attention because of the conspiracy theory narratives that surround it. The politically strategic Parkland students have benefited from the public attention generated by conspiracy theorists – who accuse the students of being ‘crisis actors’ – to remain in the media spotlight and keep the issue of gun control on the national agenda

    Just like previous presidents, Donald Trump's political fortunes rise and fall with the economy

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    In spite of an ever-growing list of scandals and criminal indictments, President Trump's job approval rating has rallied from its December nadir. Trump's approval rating is now in the low 40s - where Reagan's and Clinton's approval stood around the time of their first midterm elections. Given Trump's controversial statements and the various crises which have gripped the White House since the inauguration, why is the 45th president’s approval rating so high? Matthew D. Atkinson, Darin DeWitt, and Joseph E. Uscinski find that, as has been the case with past US presidents, Trump’s approval rate ebbs and flows with the public’s perception of the economy. A relatively buoyant economy, they write, is keeping Trump’s approval rating higher than it might otherwise be. This says something particularly damning not just about approval ratings, but about voters, elections, and democracy as well

    Stable isotope investigation of the migratory behavior of silverhaired bats (Lasionycteris noctivagans) in eastern North America

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    We investigated the migratory movements of silver-haired bats (Lasionycteris noctivagans) across the eastern extent of the species’ range. We conducted stable hydrogen isotope analysis of fur samples (δ2Hfur) from museum specimens collected across latitudes and at all times of the year. We first used these data to estimate the timing of fur replacement and to develop a model associating δ2Hfur with that of local precipitation (δ2Hprecip) at the location where fur replacement occurred. We then used this model to 1) identify individuals that had migrated across latitudes, and 2) investigate the presence of continental-scale patterns in the estimated distance traveled. Bats were at their location of fur replacement between 20 June and 26 August, and there was a strong linear relationship between δ2Hfur and δ2Hprecip in bats collected during this time. There was substantial variation in the migratory movements of this species. Twenty-four of 38 females and 14 of 30 males showed isotopic evidence of leaving the area where fur replacement occurred (i.e., migrating across latitudes), whereas the remaining bats were either sedentary or moved at a small spatial scale. Males appeared to migrate consistently, regardless of latitude of origin, whereas there was a partial leapfrog pattern in migratory movements of females. To our knowledge, this is the first evidence of leapfrog migration in bat

    The Short Rotation Period of Hi'iaka, Haumea's Largest Satellite

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    Hi'iaka is the larger outer satellite of the dwarf planet Haumea. Using relative photometry from the Hubble Space Telescope and Magellan and a phase dispersion minimization analysis, we have identified the rotation period of Hi'iaka to be ~9.8 hrs (double-peaked). This is ~120 times faster than its orbital period, creating new questions about the formation of this system and possible tidal evolution. The rapid rotation suggests that Hi'iaka could have a significant obliquity and spin precession that could be visible in light curves within a few years. We then turn to an investigation of what we learn about the (presently unclear) formation of the Haumea system and family based on this unexpectedly rapid rotation rate. We explore the importance of the initial semi-major axis and rotation period in tidal evolution theory and find they strongly influence the time required to despin to synchronous rotation, relevant to understanding a wide variety of satellite and binary systems. We find that despinning tides do not necessarily lead to synchronous spin periods for Hi'iaka, even if it formed near the Roche limit. Therefore the short rotation period of Hi'iaka does not rule out significant tidal evolution. Hi'iaka's spin period is also consistent with formation near its current location and spin up due to Haumea-centric impactors.Comment: 21 pages with 6 figures, to be published in The Astronomical Journa

    Stroke Quality Measures in Mexican Americans and Non-Hispanic Whites

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    Mexican Americans (MAs) have been shown to have worse outcomes after stroke than non-Hispanic Whites (NHWs), but it is unknown if ethnic differences in stroke quality of care may contribute to these worse outcomes. We investigated ethnic differences in the quality of inpatient stroke care between MAs and NHWs within the population-based prospective Brain Attack Surveillance in Corpus Christi (BASIC) Project (February 2009- June 2012). Quality measures for inpatient stroke care, based on the 2008 Joint Commission Primary Stroke Center definitions were assessed from the medical record by a trained abstractor. Two summary measure of overall quality were also created (binary measure of defect-free care and the proportion of measures achieved for which the patient was eligible). 757 individuals were included (480 MAs and 277 NHWs). MAs were younger, more likely to have hypertension and diabetes, and less likely to have atrial fibrillation than NHWs. MAs were less likely than NHWs to receive tPA (RR: 0.72, 95% confidence interval (CI) 0.52, 0.98), and MAs with atrial fibrillation were less likely to receive anticoagulant medications at discharge than NHWs (RR 0.73, 95% CI 0.58, 0.94). There were no ethnic differences in the other individual quality measures, or in the two summary measures assessing overall quality. In conclusion, there were no ethnic differences in the overall quality of stroke care between MAs and NHWs, though ethnic differences were seen in the proportion of patients who received tPA and anticoagulant at discharge for atrial fibrillation

    The Success Model: A Student Athlete Educational Model Designed to Improve Academic Performance Through the Utilization of Athletic Transferable Skills

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    The Success Model was developed to assist educators and counselors improve the way they prepare student athletes for academic, athletic, and future career success. The Success Model is made up four interrelating components: (a) Seif-management, (b) Note-taking, (c) Test-taking, and (d) Career Resources. This article explored why the Success Model is needed and how athletic transferable skills can be used as the building blocks for teaching studenl athletes how to succeed in classroom as well as all areas of life
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