1,591 research outputs found

    SCRIPT : A Legacy of Vitality

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    Assessing linkages between petroleum platforms and pelagic fishes using telemetry with emphasis on blue runner (Caranx crysos)

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    Petroleum platforms number greater than 4,200 in the Gulf of Mexico and Caranx crysos (blue runner) is one of the most abundant fish species around these platforms. Forty-six blue runner were tagged with acoustical transmitters in August 2005, though the study was terminated prematurely due to the impending arrival of Hurricane Katrina. Nineteen blue runner were tagged in September 2006 and tracked for up to two months. Blue runner exhibited limited site fidelity around the platforms in 2005. The home range of twenty-three blue runner was calculated in 2005. A significant difference was found between the fork length of the fish and their overall 50% range, but their overall 95% range. The reverse was true when comparing mean daily ranges and fork length. The daytime core ranges were generally larger than the nighttime core ranges, though not significantly so. In 2006 tagged fish were released at unmanned platforms and all but one returned to the main complex and remained there over the course of the study period. The size of blue runner schools was estimated to be 36m. They were found to school more during the day than at night and moved between schools showing no preference for schooling with a particular fish. The blue runner showed a distinct diel vertical migration pattern with a marked descent to about 25m at night and ascent to the surface in the morning. The rate of ascent was significantly greater than the rate of descent. There was no relationship between these rates, the amplitude of migrations and maximum nightly depths with the lunar periodicity. There was a significant difference between the nighttime distribution of blue runner at the unmanned platforms and the manned platforms with fish at the unmanned platforms having a greater mean depth. The swimming speeds of tagged blue runner were greater during the day than at night and were indicative of passive foraging behavior. The lighted manned platforms appear to allow for greater foraging opportunities at night than the unmanned platforms

    Structure of zero divisors, and other algebraic structures, in higher dimensional real Cayley-Dickson algebras

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    Real Cayley-Dickson algebras are a class of 2ⁿ-dimensional real algebras containing the real numbers, complex numbers, quaternions, and the octonions (Cayley numbers) as special cases. Each real Cayley-Dickson algebra of dimension greater than eight (a higher dimensional real Cayley-Dickson algebra) is a real normed algebra containing a multiplicative identity and an inverse for each nonzero element. In addition, each element a in the algebra has defined for it a conjugate element ā analogous to the conjugate in the complex numbers. These algebras are not alternative, but are flexible and satisfy the noncommutative Jordan identity. Each element in these algebras can be written A= a₁+ea₂ where e is a basis element and a₁,a₂ are elements of the Cayley-Dickson algebra of next lower dimension. Results include the facts that for each real Cayley-Dickson algebra aⁱaʲ = aⁱ⁺ʲ and (aⁱb)aʲ = aⁱ(baʲ) for all integers i,j and any a,b in the algebra. The major result concerns zero divisors.... --Abstract, page ii

    Struggling to be Fit: Identity, Integrity, and the Law

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    This interdisciplinary co-authored Analysis piece introduces identity and integrity, which are argued to sit at the core of the person. It analyses approaches taken to these concepts by legal regimes, particularly in the context of individuals using artificial limbs or digital avatars. The piece concludes that law engages with identity and integrity to a limited and incomplete extent; and that law is thus inadequate in its engagement with the person, and its meaning making in this respect. This piece draws on two interdisciplinary funded projects, funded by the Wellcome Trust and the Arts and Humanities Research Council

    Digital electron microscopic examination of human sural nerve biopsies

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    Diabetic peripheral polyneuropathy is characterized by axonal degeneration and regeneration as well as by Schwann cell and microvascular changes. These changes have been described at both the light (LM) and the electron microscopic (EM) levels; however, EM has not been applied to large clinical trials. Our goal was to adapt the rigorous techniques used for quantifying human biopsies with LM image analysis to accommodate ultrastructural analyses. We applied digital image capture and analysis to the ultrastructural examination of axons in sural nerve biopsies from diabetic patients enrolled in a multicenter clinical trial. The selection of sural nerve biopsies was based on the quality of specimen fixation, absence of physical distortion, and nerve fascicle size (≥100 000; ≤425 000 µm 2 ). Thin sections were collected on formvar-coated slot grids, stabilized with carbon and scanned on a Phillips CM100 transmission electron microscope. Digital images were captured with a Kodak Megaplus 1.6 camera. A montage was constructed using software derived from aerial mapping applications, and this virtual image was viewed by EM readers. Computer-assisted analyses included identification and labeling of individual axons and axons within regenerating clusters. The average density of regenerating myelinated axon clusters per mm 2 was 65.8 ± 5.1, range of 0–412 ( n  = 193). These techniques increase the number of samples that may be analyzed by EM and extend the use of this technique to clinical trials using tissue biopsies as a primary endpoint.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72529/1/j.1085-9489.2003.03030.x.pd

    Disability and the Dancing Body:A Symposium on Ownership, Identity and Difference in Dance

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    Acknowledgements We would like to thank Siobhan Davies Studios, which was aptly described by one of our participants as “a Cathedral for contemporary dance”, for hosting the symposium and assisting us on the day. We would also like to thank the staff at the Centre for Dance Research (C-Dare) at Coventry University for their support during the day. We would also, of course, like to thank the AHRC for its kind support of InVisible Difference.Peer reviewedPublisher PD

    Global Health Nursing Imperative: Using Competency-Based Analysis to Strengthen Accountability for Population Based Practice, Education and Research

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    Learning Objectives: Discuss the unique challenges of developing a collaborative global nursing workforce. Compare three sets of competencies for public health nursing. Analyze the results of the comparison of the three sets of competencies. Discuss how the analysis can be used to guide community/public health nursing education, practice and research to encompass local, national and global emphasis. Presentation presented at 2017 AHPA conference in Atlanta Georgia
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