634 research outputs found

    10,000 Miles away but feeling right at home: Rethinking global social work pedagogy and local friendship

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    Summer 2018 -- Dublin, Ireland -- Partner Agencie(s): SWSD 2018https://deepblue.lib.umich.edu/bitstream/2027.42/152311/1/N.Levin_Poster.pd

    When Resilience Turns to Resistance: A Detroit Case Study

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    This article is the theoretical accompaniment to Resilience/Resistance: A Short Film About Detroit. The short film offers a character study of two sisters, Annette and Earlene, long-time residents who illustrate the broader story of the present-day negotiation between resilience and resistance at stake within the City of Detroit. This character sketch brings to bear an emotionally ranging response to the complexities of the recent re-urbanism driving the public narrative of Detroit. Working to complicate the use of the term ‘resilience’ within this redevelopment story, this piece and the accompanying short film offer the possibility that resilience and resistance are entangled phenomena. Resilience/Resistance asks the question: resilience for whom? In the case of Detroit, I propose two modes of resilience that coexist yet conflict: mechanical (outcome-oriented) and ecological (process-oriented) resilience. I argue that where the “urban core” of the downtown revitalization project strives for mechanical resilience, long-time residents embody ecological resilience by contrast. , Within the tension between mechanical and ecological resilience frameworks dwells the possibility – or necessity – of resistance.https://deepblue.lib.umich.edu/bitstream/2027.42/154846/1/JacksonLevin_WhenResilienceTurnstoResistance.pd

    Berry Street Childhood Institute: Melbourne, Australia

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    Field Placement Experience -- Melbourne, Australia -- Summer 2015 -- Partner Agencies: Berry Street Childhood Institutehttp://deepblue.lib.umich.edu/bitstream/2027.42/116183/1/POSTER_LEVIN.pd

    A Multi-media Approach to Building Listening and Speaking Skills in the Context of Cultural Competency

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    Students at Spartanburg High School recently received Apple MacBooks for use in the classroom. The goal of this project was to come up with short supplementary materials using this new technology to build German listening and speaking skills, as well as cultural competency. The hope was that incorporating technology would hold the interest of the students and provide new opportunities for instruction for the teacher. It was also hoped that the activities created would bring German culture to life for the students. The activities are divided into 4 sections: Nachrichten, Lieder, Jojo sucht das Glück, and Films & Märchen. Each folder contains an information page explaining the contents

    Neonatal Intraocular Injection and Delivery System

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    The proposed project is a way to deliver liquid medicine into the neonatal eye to prevent retinal detachment with lower risk for bacterial infection and drug misplacement. Currently, ophthalmologists use diabetic needles to introduce medication to the neonate eye. They estimate the injection location with hand-held calipers. This may allow the medicine to be misplaced from poor needle placement and introduce preventable error. The goal is to improve the delivery system ophthalmologists currently use by investigating ways to alter or enhance commonly used injection systems to make the procedure safer and more effective

    Nonlinear magnetoinductive waves and domain walls in composite metamaterials

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    We describe novel physics of nonlinear magnetoinductive waves in left-handed composite metamaterials. We derive the coupled equations for describing the propagation of magnetoinductive waves, and show that in the nonlinear regime the magnetic response of a metamaterial may become bistable. We analyze modulational instability of different nonlinear states, and also demonstrate that nonlinear metamaterials may support the propagation of domain walls (kinks) connecting the regions with the positive and negative magnetization.Comment: 5 pages, 5 figure

    DNA content analysis of colorectal cancer defines a distinct ‘microsatellite and chromosome stable’ group but does not predict response to radiotherapy

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    Colorectal cancers (CRC) are thought to have genetic instability in the form of either microsatellite instability (MSI) or chromosomal instability (CIN). Recently, tumours have been described without either MSI or CIN, that is, microsatellite and chromosome stable (MACS) CRCs. We investigated the (i) frequency of the MACS-CRCs and (ii) whether this genotype predicted responsiveness to neoadjuvant chemoradiotherapy. To examine the frequency of MACS-CRCs, DNA content (ploidy) was examined in 89 sporadic microsatellite-stable CRCs using flow cytometry. The tumours were also screened for mutations in KRAS/BRAF/TP53/PIK3CA by QMC-PCR. To examine the value of tumour ploidy in predicting response to chemoradiotherapy, DNA content was tested in a separate group of 62 rectal cancers treated with neoadjuvant chemoradiotherapy. Fifty-one of 89 CRCs (57%) were aneuploid and 38 (43%) were diploid. There was no significant association between mutations in TP53/KRAS/BRAF/PIK3CA and ploidy. Testing of association between mutations revealed only mutual exclusivity of KRAS/BRAF mutation (P < 0.001). Of the 62 rectal cancers treated with neoadjuvant chemoradiotherapy, 22 had responded (Mandard tumour regression grade 1/2) and 40 failed to respond (Grade 3–5). Twenty-five of 62 (40%) tumours were diploid, but there was no association between ploidy and response to therapy. We conclude that MACS-CRCs form a significant proportion of microsatellite-stable CRCs with a mutation profile overlapping that of CRCs with CIN. A diploid genotype does not, however, predict the responsiveness to radiotherapy

    Seismic velocities within the sedimentary succession of the Canada Basin and southern Alpha-Mendeleev Ridge, Arctic Ocean : evidence for accelerated porosity reduction?

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    Author Posting. © Crown Copyright, 2015. This article is posted here by permission of Oxford University Press for personal use, not for redistribution. The definitive version was published in Geophysical Journal International 204 (2016): 1-20, doi:10.1093/gji/ggv416.The Canada Basin and the southern Alpha-Mendeleev ridge complex underlie a significant proportion of the Arctic Ocean, but the geology of this undrilled and mostly ice-covered frontier is poorly known. New information is encoded in seismic wide-angle reflections and refractions recorded with expendable sonobuoys between 2007 and 2011. Velocity–depth samples within the sedimentary succession are extracted from published analyses for 142 of these records obtained at irregularly spaced stations across an area of 1.9E + 06 km2. The samples are modelled at regional, subregional and station-specific scales using an exponential function of inverse velocity versus depth with regionally representative parameters determined through numerical regression. With this approach, smooth, non-oscillatory velocity–depth profiles can be generated for any desired location in the study area, even where the measurement density is low. Practical application is demonstrated with a map of sedimentary thickness, derived from seismic reflection horizons interpreted in the time domain and depth converted using the velocity–depth profiles for each seismic trace. A thickness of 12–13 km is present beneath both the upper Mackenzie fan and the middle slope off of Alaska, but the sedimentary prism thins more gradually outboard of the latter region. Mapping of the observed-to-predicted velocities reveals coherent geospatial trends associated with five subregions: the Mackenzie fan; the continental slopes beyond the Mackenzie fan; the abyssal plain; the southwestern Canada Basin; and, the Alpha-Mendeleev magnetic domain. Comparison of the subregional velocity–depth models with published borehole data, and interpretation of the station-specific best-fitting model parameters, suggests that sandstone is not a predominant lithology in any of the five subregions. However, the bulk sand-to-shale ratio likely increases towards the Mackenzie fan, and the model for this subregion compares favourably with borehole data for Miocene turbidites in the eastern Gulf of Mexico. The station-specific results also indicate that Quaternary sediments coarsen towards the Beaufort-Mackenzie and Banks Island margins in a manner that is consistent with the variable history of Laurentide Ice Sheet advance documented for these margins. Lithological factors do not fully account for the elevated velocity–depth trends that are associated with the southwestern Canada Basin and the Alpha-Mendeleev magnetic domain. Accelerated porosity reduction due to elevated palaeo-heat flow is inferred for these regions, which may be related to the underlying crustal types or possibly volcanic intrusion of the sedimentary succession. Beyond exploring the variation of an important physical property in the Arctic Ocean basin, this study provides comparative reference for global studies of seismic velocity, burial history, sedimentary compaction, seismic inversion and overpressure prediction, particularly in mudrock-dominated successions

    Conservation of the endangered Arctic fox in Norway - are successful reintroductions enough?

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    Translocation of captive-bred animals has become a widespread conservation practice to counteract species extinctions. We analyse and discuss the apparent success and shortcomings of Arctic fox (Vulpes lagopus) reintroductions in alpine tundra areas of Norway. We followed the fate of 915 foxes between 2007 and 2020 and estimated the apparent survival and reproductive success of captive-bred and released Arctic foxes, compared to wild-born descendants. Relationship to abundance of small rodents, population size, and age were explored. Overall, apparent survival and probability of breeding were similar between captive-bred and wild-born foxes, positively linked to rodent abundance. For wild-born foxes, both breeding propensity and litter size declined with increasing fox population size. This could be a first sign of the limited capacity of single tundra patches to house self-subsistent populations. Thus, facilitating and maintaining connectivity among remnant and re-established Arctic fox populations, creating functional metapopulations, is essential for further improvement and longterm survival. Relying on the combined measures of supplementary feeding and red-fox (Vulpes vulpes) control, the Arctic fox captive-breeding and reintroduction programme has so far been highly successful. However, anthropogenic drivers facilitating red fox invasion into the Arctic fox habitat, along with climate driven irregularities and dampened small rodent cycles, could inhibit the establishment of a self-sustained population. A more holistic ecosystem approach and conservation measures to restore alpine fauna should be considered.publishedVersio
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