121 research outputs found

    Promoting College Readiness and Access: Practices and Policy Implications

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    Persisting social and economic inequalities exist in achieving a postsecondary education. These inequalities are attributable to economic, racial, and gender disparities that result in considerable gaps in college access, achievement, and college completion for minority groups. This article presents the current landscape for college readiness and access. Effective practices for promoting college readiness and access are discussed along with policy implications at the state level

    There\u27s A Little Bit Of Irish Everywhere

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    https://digitalcommons.library.umaine.edu/mmb-vp/6654/thumbnail.jp

    Frankie Pacetti, E.J. Pacetti and Sandie Stratton

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    Frankie Pacetti, a noted sports and commercial fisherwoman, E.J. Pacetti, an experienced commercial crabber in the region and Sandie Stratton, interviewed by Jennifer Warren and Melissa Williams on October 30, 2010

    Resource Prospector Propulsion Cold Flow Test

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    For the past year, NASA Marshall Space Flight Center and Johnson Space Center have been working on a government version of a lunar lander design for the Resource Prospector Mission. A propulsion cold flow test system, representing an early flight design of the propulsion system, has been fabricated. The primary objective of the cold flow test is to simulate the Resource Prospector propulsion system operation through water flow testing and obtain data for anchoring analytical models. This effort will also provide an opportunity to develop a propulsion system mockup to examine hardware integration to a flight structure. This paper will report the work progress of the propulsion cold flow test system development and test preparation. At the time this paper is written, the initial waterhammer testing is underway. The initial assessment of the test data suggests that the results are as expected and have a similar trend with the pretest prediction. The test results will be reported in a future conference

    The city as a refuge for insect pollinators

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    Urban ecology research is changing how we view the biological value and ecological importance of cities. Lagging behind this revised image of the city are natural resource management agencies’ urban conservation programs that historically have invested in education and outreach rather than programs designed to achieve high-priority species conservation results. This essay synthesizes research on urban bee species diversity and abundance to suggest how urban conservation can be repositioned to better align with a newly unfolding image of urban landscapes. We argue that pollinators put high-priority and high-impact urban conservation within reach. In a rapidly urbanizing world, transforming how environmental managers view the city can improve citizen engagement while exploring more sustainable practices of urbanization

    The Transition from Practitioner to Professor: The Struggle of New Faculty to Find their Place in the World of Academia

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    Becoming a college professor brings both the feeling of self-accomplishment and discernment regarding this prestigious achievement. Most doctoral candidates are practitioners in the eld of public education and will hopefully transition from a principalship to the oce of a college professor. While this journey is lled with personal attainment, some of the doctoral graduates experience a variety of struggles along the way to their positions in higher education. This study examined this journey for some of those who have made the move. The questions posed to the participants centered on the benefits, disadvantages, and suggestions on ways to assist fellow completers who have decided to take a position in higher education. Four primary struggles were identied as a result of the study: (1) struggle with the role, (2) struggle with self, (3) cultural struggle, and (4) future struggles. Through a narrative approach, the participants addressed their feelings regarding the move to a professorship, struggles they faced along the way and the impact the professional change had on their lives

    Electronic communication of cells with a surface mediated by boronic acid saccharide interactions

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    The fabrication of a molecularly tailored surface functionalised with a saccharide binding motif, a phenyl boronic acid derivative is reported.The functionalised surface facilitated the transfer of electrons, via unique electronic interactions mediated by the presence of the boronic acid, from a macrophage cell line. This is the first example of eukaryotic cellular-electrical communication mediated by the binding of cells via their cell–surface saccharide units

    Habitat restoration benefits wild bees: A meta‐analysis

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    Pollinator conservation is of increasing interest in the light of managed honeybee (Apis mellifera) declines, and declines in some species of wild bees. Much work has gone into understanding the effects of habitat enhancements in agricultural systems on wild bee abundance, richness and pollination services. However, the effects of ecological restoration targeting “natural” ecological endpoints (e.g. restoring former agricultural fields to historic vegetation types or improving degraded natural lands) on wild bees have received relatively little attention, despite their potential importance for countering habitat loss.We conducted a meta‐analysis to evaluate the effects of ecological restoration on wild bee abundance and richness, focusing on unmanaged bee communities in lands restored and managed to increase habitat availability and quality. Specifically, we assessed bee abundance and/or richness across studies comparing restored vs. unrestored treatments and studies investigating effects of specific habitat restoration techniques, such as burning, grazing, invasive plant removal and seeding.We analysed 28 studies that met our selection criteria: these represented 11 habitat types and 7 restoration techniques. Nearly all restorations associated with these studies were performed without explicit consideration of habitat needs for bees or other pollinators. The majority of restorations targeted plant community goals, which could potentially have ancillary benefits for bees.Restoration had overall positive effects on wild bee abundance and richness across multiple habitat types. Specific restoration actions, tested independently, also tended to have positive effects on wild bee richness and abundance.Synthesis and applications. We found strong evidence that ecological restoration advances wild bee conservation. This is important given that habitat loss is recognized as a leading factor in pollinator decline. Pollinator responses to land management are rarely evaluated in non‐agricultural settings and so support for wild bees may be an underappreciated benefit of botanically focused management. Future restoration projects that explicitly consider the needs of wild bees could be more effective at providing nesting, foraging and other habitat resources. We encourage land managers to design and evaluate restoration projects with the habitat needs of wild bee species in mind.We found strong evidence that ecological restoration advances wild bee conservation. This is important given that habitat loss is recognized as a leading factor in pollinator decline. Pollinator responses to land management are rarely evaluated in non‐agricultural settings and so support for wild bees may be an underappreciated benefit of botanically focused management. Future restoration projects that explicitly consider the needs of wild bees could be more effective at providing nesting, foraging and other habitat resources. We encourage land managers to design and evaluate restoration projects with the habitat needs of wild bee species in mind.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142557/1/jpe13012-sup-0001-FigS1.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/142557/2/jpe13012.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/142557/3/jpe13012_am.pd

    Early Planet Formation in Embedded Disks (eDisk). II. Limited Dust Settling and Prominent Snow Surfaces in the Edge-on Class I Disk IRAS 04302+2247

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    While dust disks around optically visible, Class II protostars are found to be vertically thin, when and how dust settles to the midplane are unclear. As part of the Atacama Large Millimeter/submillimeter Array (ALMA) large program, Early Planet Formation in Embedded Disks, we analyze the edge-on, embedded, Class I protostar IRAS 04302+2247, also nicknamed the ``Butterfly Star." With a resolution of 0.05" (8~au), the 1.3 mm continuum shows an asymmetry along the minor axis which is evidence of an optically thick and geometrically thick disk viewed nearly edge-on. There is no evidence of rings and gaps, which could be due to the lack of radial substructure or the highly inclined and optically thick view. With 0.1" (16~au) resolution, we resolve the 2D snow surfaces, i.e., the boundary region between freeze-out and sublimation, for 12^{12}CO JJ=2--1, 13^{13}CO JJ=2--1, C18^{18}O JJ=2--1, H2H_{2}CO JJ=30,33_{0,3}--20,22_{0,2}, and SO JJ=656_{5}--545_{4}, and constrain the CO midplane snow line to 130\sim 130 au. We find Keplerian rotation around a protostar of 1.6±0.4M1.6 \pm 0.4 M_{\odot} using C18^{18}O. Through forward ray-tracing using RADMC-3D, we find that the dust scale height is 6\sim 6 au at a radius of 100~au from the central star and is comparable to the gas pressure scale height. The results suggest that the dust of this Class~I source has yet to vertically settle significantly.Comment: 33 pages, 21 figures. Accepted for publication in ApJ as one of the first-look papers of the eDisk ALMA Large Progra
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