490 research outputs found

    Process consent and research with older persons living with dementia

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    There is always a debate around consent in the context of research. Given the expansion of different approaches to qualitative research within dementia care, there is increasing consideration around consent in this context; particularly in research concerning the experiences of living with dementia and the care of persons with dementia. Specifically there is a drive to directly involve persons with dementia as they offer specific expertise concerning living with dementia. Additionally, capacity legislation strengthens the case for ensuring that persons with dementia are actively enabled to make their own decisions for as long as possible. This paper discusses an approach and method that can enable more persons who are living with dementia to participate in some types of research should they want to. Currently, most researchers rely on an extension of the traditional competency-based informed consent method and/or proxy consent or assent. However, related to the development of so-called person-centred and participatory research in dementia, there are now a number of academic publications on approaches and practical methods of \u27inclusionary\u27 consent. This paper considers the broader contextual influences on inclusionary consent and outlines the key aspects of such approaches based on the development of one specific method for including persons with dementia in consent processes. The method is based on the premise that, for persons with a dementia, informed consent becomes increasingly redundant and consequently exclusionary to them as persons. And even where capacity is said to no longer exist, persons with dementia are often able to make choices and make known their preferences about participating in research where the consent process is made specifically dementia-sensitive. Ethics committees can facilitate researchers both by supporting them when they need to and want to include persons with dementia in gerontological research and by challenging them to ensure that participation is genuine and starts with process consent

    Implementing an e-learning Masters programme for Practice Development

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    Introduction – The need for more effective person centred care has been propositioned for a number of years (Dewar and Nolan 2013; McCormack, Dewing and McCance, 2011; Dewing, 2004) and Practice Development (PD) has been viewed as one way to embed this into organisational culture (Manley, Sanders, Cardiff and Webster, 2011). More recently multiple policy reports echo this call (Age UK, 2012; Willis Commission on Nursing, 2012; Parliamentary Health Service Ombudsman, 2011). Joint work between the Department of Nursing and England Centre for Practice Development at Canterbury Christ Church University has validated an innovative Masters level programme in Practice Development, utilising workplace and e-learning approaches to facilitate creativity in the work setting. Aim: This paper will briefly describe the programme and then explore the experiences and challenges of implementing a work based and e-learning Masters Practice Development and Innovation programme. Approach: Practice Development is built on the key principles of person-centredness, shared values and vision, transforming individuals and culture through active learning, facilitation and engagement (McCormack, Manley, Titchen 2013). Thus, the approach to the Masters programme reflects these principles and utilises facilitation methods to enable practice development to transform the learner and work setting. As part of this process we, as lecturers, have been developing our own values and beliefs and expanded our knowledge and skills so that we can positively impact on the learner experience and work as learning partners. The programme is, therefore, evolving to embody these principles and enable learners to incorporate them into practice. The programme is built around ten core Practice Development/Innovation principles and the process of Active Learning, which will be expanded on in the presentation. Our vision is to make this programme accessible to regional, national and international learners. The work-based and e-learning approaches make this achievable but bring challenges to ensure that the programme reflects the principles of Practice Development from a distance. This is further complicated by facilitating a range of learners from diverse clinical areas, experiences and cultures who have often been exposed to traditional forms of learning. Thus, facilitating the learners to engage with the material, and incorporate it into their own practice setting, has led to careful consideration of materials for the learners to access. As the programme is progressing areas are emerging that need to be thoughtfully considered and addressed to ensure development of learning. Considerations: Initial themes starting to emerge are: increasing lecturer knowledge and skills around both Practice Development and different tools for e-learning, learners previous experience of facilitation and willingness to take responsibility for their own learning, challenges of promoting active learning approaches online , enabling achievement of Masters level learning outcomes with a distance approach, new ways of working for individuals plus the organisational views around supporting learners in practice. These require both lecturers and learners to be motivated to learn and devote time to engage with material and processes. However, it also requires lecturers and learners to make choices and reflect on activities to assess the relevance and usefulness to their situation. The programme encourages learners to be creative and examine issues differently which takes time to engage with and progress. Conclusion: Evaluation of this programme is in its infancy. A key learning point is that transforming practice through Practice Development and innovation in the workplace also involves transforming University views on learning, engagement and creativity

    Exploration History and Mineral Potential of the Central Arctic Zn-Pb District, Nunavut

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    Exploration in the central Arctic Zn-Pb District took place in five phases: 1) an initial exploration period (1960–70), during which most surface showings on Cornwallis and Little Cornwallis islands were found; 2) a discovery period (1971–79), during which the buried Polaris ore body was discovered and its feasibility and viability established, new showings were found farther afield, and many showings received limited drill testing; 3) the production period (1980–88), dominated by drilling at Polaris Mine; 4) an ore-replacement exploration period (1989–2001), during which showings close to Polaris were extensively drilled, showings on Cornwallis Island drill tested, and new showings found and drilled farther away; and 5) a reclamation period (2002–05), during which the infrastructure was removed and the mine site restored. Factors affecting the timing and rate of exploration were generally intrinsic to the region: 1) discovery of showings in 1960, 2) discovery of the Polaris ore body in 1971, 3) declining reserves between 1989 and 2002, 4) closure of the mine in 2002, 5) the short exploration season and difficult logistics, and 6) lack of competition. The external drivers of exploration were 1) oil-related exploration that led to the discovery of the Polaris showings, 2) the onset of regional exploration coinciding with spikes in the price of zinc, and 3) the surge in scientific interest in carbonate-hosted Zn-Pb deposits in 1967. Probabilistic, discovery-time curve analysis indicates that over 50 showings remain undiscovered. Because logistics controlled the target selection, the standard assumption of a logical discovery process (from largest target to smallest target) is likely invalid. This means that large, untested targets may still exist in the district.Les travaux d’exploration dans le district de Zn-Pb du centre de l’Arctique se sont déroulés en cinq étapes : 1) une période d’exploration initiale (1960 - 1970), durant laquelle la plupart des traces détectées sur l’île Cornwallis et la Petite île Cornwallis ont été trouvées; 2) une période de découverte (1971- 1979), pendant laquelle la zone de minéralisation enterrée de Polaris a été découverte et sa faisabilité et sa rentabilité ont été déterminées, de nouvelles traces ont été décelées plus au loin, et de nombreuses traces ont fait l’objet d’un nombre restreint d’essais de foration; 3) une période de production (1980-1988), dominée par les travaux de foration à la mine Polaris; 4) une période d’exploration de remplacement de minerai (1989- 2001), dans le cadre de laquelle les traces situées à proximité de Polaris ont fait l’objet de forations intenses, les traces de l’île Cornwallis ont fait l’objet d’essais et de nouvelles traces ont été découvertes et forées plus loin; et 5) une période de remise en état (2002-2005), durant laquelle l’infrastructure a été retirée et l’emplacement de la mine a été restauré. Généralement, les facteurs touchant la programmation et le régime d’exploration étaient intrinsèques à la région : 1) la découverte des traces en 1960, 2) la découverte du corps minéralisé de Polaris en 1971, 3) la diminution des réserves entre 1989 et 2002, 4) la fermeture de la mine en 2002, 5) la courte saison d’exploration et la logistique qui présentait des difficultés, et 6) l’absence de concurrence. Les motifs externes à l’exploration étaient les suivants : 1) l’exploration pétrolière qui a engendré la découverte des traces de Polaris, 2) le début de l’exploration régionale qui coïncidait avec les variations brusques du prix du zinc, et 3) l’intérêt soudain, dans le monde scientifique, envers les gisements de Zn-Pb dans la roche hôte carbonatée en 1967. L’analyse probabiliste de la courbe de découverte par rapport au temps indique que plus d’une cinquantaine de traces n’ont toujours pas été découvertes. Puisque la logistique décidait du choix des cibles, il est très vraisemblable que l’hypothèse standard d’un processus de découverte logique (de la cible la plus grande à la cible la plus petite) ne soit pas valable. Cela signifie que de vastes cibles n’ayant pas fait l’objet d’essais existent encore dans le district

    Coupled Electron Ion Monte Carlo Calculations of Dense Metallic Hydrogen

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    We present a new Monte Carlo method which couples Path Integral for finite temperature protons with Quantum Monte Carlo for ground state electrons, and we apply it to metallic hydrogen for pressures beyond molecular dissociation. We report data for the equation of state for temperatures across the melting of the proton crystal. Our data exhibit more structure and higher melting temperatures of the proton crystal than Car-Parrinello Molecular Dynamics results. This method fills the gap between high temperature electron-proton Path Integral and ground state Diffusion Monte Carlo methods

    Anodic dissolution of metals in oxide-free cryolite melts

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    The anodic behavior of metals in molten cryolite-alumina melts has been investigated mostly for use as inert anodes for the Hall-HĂ©roult process. In the present work, gold, platinum, palladium, copper, tungsten, nickel, cobalt and iron metal electrodes were anodically polarized in an oxide-free cryolite melt (11%wt. excess AlF3 ; 5%wt. CaF2) at 1273 K. The aim of the experiments was to characterize the oxidation reactions of the metals occurring without the effect of oxygen-containing dissolved species. The anodic dissolution of each metal was demonstrated, and electrochemical reactions were assigned using reversible potential calculation. The relative stability of metals as well as the possibility of generating pure fluorine is discussed

    Evidence for strong electron-phonon coupling and polarons in the optical response of La_{2-x}Sr_xCuO_4

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    The normal state optical response of La_{2-x}Sr_xCuO_4 is found to be consistent with a simple multi-component model, based on free carriers with strong electron-phonon interaction, localized polaronic states near 0.15 eV and a mid-infrared band at 0.5 eV. Normal state reflectance and absorbance of La_{1.83}Sr_{0.17}CuO_4 are investigated and their temperature dependence is explained. Both, the ac and dc response are recovered and the quasi-linear behavior of the optical scattering rate up to 3000- 4000 cm^{-1} is found to be consistent with strong electron-phonon interaction, which also accounts for the value of T_c. Although not strictly applicable in the superconducting state, our simple model accounts for the observed penetration depth and the optical response below T_c can be recovered by introducing a small amount of additional carriers. Our findings suggest that the optical response of La_{2-x}Sr_xCuO_4 could be explained both, in the normal and superconducting state, by a simple multi-fluid model with strong electron-phonon interaction if the gap symmetry and the temperature dependence of the 0.5 eV mid-infrared band are adequately taken into account.Comment: 22 pages, REVTeX, 12 figures in ps-fil

    King and Queen County Shoreline Situation Report

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    The data inventory developed for the Shoreline Situation Reports are based on a three-tiered shoreline assessment approach. This assessment characterizes conditions in the shorezone observed from a small boat moving along the shoreline. Handheld GPS units record data observations in the field. The three tiered shoreline assessment approach divides the shorezone into three regions: the immediate riparian zone, evaluated for land use the bank, evaluated for height, stability, cover and natural protection the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes. Three GIS coverages are generated from the collection technique. They can be downloaded at this site. The GIS coverages use a digitized 1:24,000 scale USGS high water line (HWL) shoreline as the baseline coverage. However, if the position of the digitized HWL differs greatly from the observed shoreline on a 1994 color infra-red digital ortho quarter quadrangle (DOQQ), the shoreline position is corrected to align more closely with the land-water interface observed in the DOQQ. Using ArcInfo, the base shoreline is re-coded with the attributes defined in each coverage. The KQ_lubc coverage are features related to the land use in the riparian zone, and conditions at the bank. The KQ_sstru coverage includes information pertaining to structures for shoreline defense. Finally, KQ_astru identifies structures which are typically built for access and recreational activities at the shore. A metadata file is provided to describe each coverage

    Continuum variational and diffusion quantum Monte Carlo calculations

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    This topical review describes the methodology of continuum variational and diffusion quantum Monte Carlo calculations. These stochastic methods are based on many-body wave functions and are capable of achieving very high accuracy. The algorithms are intrinsically parallel and well-suited to petascale computers, and the computational cost scales as a polynomial of the number of particles. A guide to the systems and topics which have been investigated using these methods is given. The bulk of the article is devoted to an overview of the basic quantum Monte Carlo methods, the forms and optimisation of wave functions, performing calculations within periodic boundary conditions, using pseudopotentials, excited-state calculations, sources of calculational inaccuracy, and calculating energy differences and forces
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