7,586 research outputs found

    Framework and Initial Analyses of Fertilizer Profitability in Maize and Cotton in Zambia

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    Inorganic fertilizers will play a role in government programs, but whether or not a single policy is valuable for all farmers depends upon the net gain for the farmers. The research here seeks to demonstrate how to answer the question “Is fertilizer profitable in Zambia for maize and cotton in the smallholder sector?” This study identifies the key components determining profitability and then sets up a framework to evaluate the probability of farmers to obtain profitable results with fertilizer use on maize and cotton. Several cases are selected and the results are evaluated. Private profitability for the farmer at market prices is discussed, leaving social profitability to other researchers. A simple method for farmers and extensionists to use to assess a fertilizer investment is given, to assist in more site specific analysis, given prices and environment.food security, food policy, Zambia, maize, cotton, fertilizer, Agribusiness, Q18,

    Square Integer Heffter Arrays with Empty Cells

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    A Heffter array H(m,n;s,t)H(m,n;s,t) is an m×nm \times n matrix with nonzero entries from Z2ms+1\mathbb{Z}_{2ms+1} such that i)i) each row contains ss filled cells and each column contains tt filled cells, ii)ii) every row and column sum to 0, and iii)iii) no element from {x,x}\{x,-x\} appears twice. Heffter arrays are useful in embedding the complete graph K2nm+1K_{2nm+1} on an orientable surface where the embedding has the property that each edge borders exactly one ss-cycle and one tt-cycle. Archdeacon, Boothby and Dinitz proved that these arrays can be constructed in the case when s=ms=m, i.e. every cell is filled. In this paper we concentrate on square arrays with empty cells where every row sum and every column sum is 00 in Z\mathbb{Z}. We solve most of the instances of this case.Comment: 20 pages, including 2 figure

    Exploring positive adjustment in people with spinal cord injury.

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    This study explored adjustment in people with spinal cord injury; data from four focus groups are presented. Thematic analysis revealed four themes, managing goals and expectations, comparison with others, feeling useful and acceptance, showing participants positively engaged in life, positively interpreted social comparison information and set realistic goals and expectations. These positive strategies show support for adjustment theories, such as the Cognitive Adaptation Theory, the Control Process Theory and Response Shift Theory. These results also provide insight into the adjustment process of a person with spinal cord injury and may be useful in tailoring support during rehabilitation

    Implementation of ILLIAC 4 algorithms for multispectral image interpretation

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    Research has focused on the design and partial implementation of a comprehensive ILLIAC software system for computer-assisted interpretation of multispectral earth resources data such as that now collected by the Earth Resources Technology Satellite. Research suggests generally that the ILLIAC 4 should be as much as two orders of magnitude more cost effective than serial processing computers for digital interpretation of ERTS imagery via multivariate statistical classification techniques. The potential of the ARPA Network as a mechanism for interfacing geographically-dispersed users to an ILLIAC 4 image processing facility is discussed

    Otoconia as Test Masses in Biological Accelerometers: What Can We Learn About Their Formation from Evolutionary Studies and from Work in Microgravity?

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    This paper reviews previous findings and introduces new material about otolith end organs that help us to understand their functioning and development. In particular, we consider the end organs as biological accelerometers. The otoconia are dealt with as test masses whose substructure and evolutionary trend toward calcite may prove significant in understanding formation requirements. Space-flight helps illuminate the influence of gravity, while right-left asymmetry is suggested by study of certain rat strains

    “From the edge of the abyss to the foot of the rainbow – Narrating a journey of mental health recovery” the process of a wounded researcher

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    © 2017: Samantha J. Robertson, Diane Carpenter, Maggie Donovan-Hall, and Nova Southeastern University. In the UK, mental health service users are asked to “tell their stories” within clinical settings as a tool for diagnosis, formulation and treatment plans. Retelling, reliving and reflecting on traumatic and distressing experiences is not a benign activity. Yet the process of reframing lived experience within a personal narrative could support the development of: a more positive identity; self-management skills and improved social connections (Slade, 2009) and therefore contribute to mental health recovery. This is an exploration of my process as a wounded researcher in the development of a version of my narrative as an autoethnography. I developed a series of 54 vignettes that described memories of my lived experience. To start, I used memorable quotes - the voices of others within my narrative. Developing and analyzing my autoethnography was visceral. It highlighted aspects of my process (and the likely process of others) and raised many unresolved dilemmas. For example: what was left out or left unsaid and the issue of “narrative truth” (Craib, 2004); reordering the vignettes for coherence; the role of relational ethics; and the impact on my identity of this difficult on-going process. It impacted on my mental health, but it has been a crucial part of my recovery

    Phylogeny and systematics of the Coleoidea

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    15 p., 4 fig.http://paleo.ku.edu/contributions.htm

    Using public engagement and consultation to inform the development of ageing-and dementia-friendly pharmacies – Innovative practice

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    This study explored public perceptions about the importance of, and how to create, ageing- and dementia-friendly pharmacists and pharmacies. In September 2016, four focus groups (45 minutes each) were conducted with 16 participants who represented organisations, groups or forums working with and/or for older people and people with dementia in Greater London. Discussions were recorded via handwritten notes and thematically analysed. Participants confirmed the importance of pharmacists and pharmacies being ageing- and dementia-friendly and described variability in whether this is currently the case. Suggested strategies for improvement included targeting communication, pharmacist leadership and shop layout
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