7,203 research outputs found

    Residential and support services for older people in the Waikato, 1992-1997: Privatisation and emerging resistance

    Get PDF
    As disproportionate users of services, older people are more vulnerable to shifts in policy in health care and social support. This paper focuses on older people as a group affected by economic and social restructuring. We summarise the history of support for older New Zealanders in the century prior to 1984, and assess the impacts of the subsequent shifts in social welfare policy up to 1997. Four reference points for appreciating the impacts of these policy changes are suggested: • shifts in general health care and housing policy • the cumulative impacts of restructuring on families and communities • evolving patterns of disability in the older population • the emerging resistance of older people to privatisation. We follow this up with analysis of a case study carried out in the Waikato on the provision of residential and caring services, and describe shifts in the supply of age-targeted housing and community support services. For example, in contrast to the trend towards reduced involvement by the state in residential care (e.g. rest homes), there has been no concerted dis-investment in pensioner housing. Finally we document the emerging resistance of older people to change

    Seeing farmers' markets: Theoretical and media perspectives on new sites of exchange in New Zealand

    Get PDF
    In this paper we explore the extent to which a reciprocal relationship exists between contemporary theorisation about farmers' markets in geography and the rapidly expanding public discourse surrounding these sites of exchange in New Zealand. Activities branded as farmers' markets are seen widely as local phenomena of systemic significance for the understanding of evolving geographies of production, consumption and exchange. As something ‘new’ on the landscape, farmers' markets also attract attention in the media. An electronic database of significant print media contributions over the period 1995 to 2007 provides the empirical basis for an assessment of the extent to which theorisation and the public discourse address common themes. Our analysis indicates that, while the economic and social constructions in both the research literature and the media database share common themes, strong contrasts in ways of ‘seeing’ farmers' markets are apparent. We note the predilection in the print media to present the nature and purpose of farmers' markets through the personal experiences and ‘stories’ of participants. There is a tendency to focus on the appeal of markets to the consumers who form the readership base. The theorised alterity of the farmers' market, either in terms of production methods or motivations for consumption, is not reflected strongly in media reports, and this raises questions about ‘over-theorisation’ in the academic literature. Our aim is to promote reflection in both the editorial offices of the media and in the academy by documenting the nature of these contrasting views

    The Intermediate Coupling Regime in the AdS/CFT Correspondence

    Get PDF
    The correspondence between the 't Hooft limit of N=4 super Yang-Mills theory and tree-level IIB superstring theory on AdS(5)xS(5) in a Ramond-Ramond background at values of lambda=g^2 N ranging from infinity to zero is examined in the context of unitarity. A squaring relation for the imaginary part of the holographic scattering of identical string fields in the two-particle channels is found, and a mismatch between weak and strong 't Hooft coupling is pointed out within the correspondence. Several interpretations and implications are proposed.Comment: 10 pages, LaTeX, reference adde

    Comparing post-combustion CO2 capture operation at retrofitted coal-fired power plants in the Texas and Great Britain electric grids

    Get PDF
    Stuart Cohen is with UT Austin, Hannah Chalmers is with University of Edinburgh, Michael Webber is with UT Austin, and Carey King is with UT AustinThis work analyses the carbon dioxide (CO2) capture system operation within the Electric Reliability Council of Texas (ERCOT) and Great Britain (GB) electric grids using a previously developed first-order hourly electricity dispatch and pricing model. The grids are compared in their 2006 configuration with the addition of coal-based CO2 capture retrofits and emissions penalties from 0 to 100 US dollars per metric ton of CO2 (USD/tCO2). CO2 capture flexibility is investigated by comparing inflexible CO2 capture systems to flexible ones that can choose between full- and zero-load CO2 capture depending on which operating mode has lower costs or higher profits. Comparing these two grids is interesting because they have similar installed capacity and peak demand, and both are isolated electricity systems with competitive wholesale electricity markets. However, differences in capacity mix, demand patterns, and fuel markets produce diverging behaviours of CO2 capture at coal-fired power plants. Coal-fired facilities are primarily base load in ERCOT for a large range of CO2 prices but are comparably later in the dispatch order in GB and consequently often supply intermediate load. As a result, the ability to capture CO2 is more important for ensuring dispatch of coal-fired facilities in GB than in ERCOT when CO2 prices are high. In GB, higher overall coal prices mean that CO2 prices must be slightly higher than in ERCOT before the emissions savings of CO2 capture offset capture energy costs. However, once CO2 capture is economical, operating CO2 capture on half the coal fleet in each grid achieves greater emissions reductions in GB because the total coal-based capacity is 6 GW greater than in ERCOT. The market characteristics studied suggest greater opportunity for flexible CO2 capture to improve operating profits in ERCOT, but profit improvements can be offset by a flexibility cost penalty.Mechanical Engineerin

    Exact low-energy effective actions for hypermultiplets in four dimensions

    Get PDF
    We consider the general hypermultiplet Low-Energy Effective Action (LEEA) that may appear in quantized, four-dimensional, N=2 supersymmetric, gauge theories, e.g. in the Coulomb and Higgs branches. Our main purpose is a description of the exact LEEA of n magnetically charged hypermultiplets. The hypermultiplet LEEA is given by the N=2 supersymmetric Non-Linear Sigma-Model (NLSM) with a 4n-dimensional hyper-K"ahler metric, subject to non-anomalous symmetries. Harmonic Superspace (HSS) and the NLSM isometries are very useful to constrain the hyper-K"ahler geometry of the LEEA. We use N=2 supersymmetric projections of HSS superfields to N=2 linear (tensor) O(2) and O(4) multiplets in N=2 Projective Superspace (PSS) to deduce the explicit form of the LEEA in some particular cases. As the by-product, a simple new classification of all multi-monopole moduli space metrics having su(2)_R symmetry is proposed in terms of real quartic polynomials of 2n variables, modulo Sp(n) transformations. The 4d hypermultiplet LEEA for n=2 can be encoded in terms of an elliptic curve.Comment: 60 pages, LaTeX, macros included, references adde

    Cubic Twistorial String Field Theory

    Full text link
    Witten has recently proposed a string theory in twistor space whose D-instanton contributions are conjectured to compute N=4 super-Yang-Mills scattering amplitudes. An alternative string theory in twistor space was then proposed whose open string tree amplitudes reproduce the D-instanton computations of maximal degree in Witten's model. In this paper, a cubic open string field theory action is constructed for this alternative string in twistor space, and is shown to be invariant under parity transformations which exchange MHV and googly amplitudes. Since the string field theory action is gauge-invariant and reproduces the correct cubic super-Yang-Mills interactions, it provides strong support for the conjecture that the string theory correctly computes N-point super-Yang-Mills tree amplitudes.Comment: 19+1 pages, 4+1 EPS figures, JHEP3 LaTeX; v2: minor corrections, references added; v3: the final version published in JHEP with a new footnote on the d=0 on-shell contributio

    VisGenome: visualization of single and comparative genome representations

    Get PDF
    VisGenome visualizes single and comparative representations for the rat, the mouse and the human chromosomes at different levels of detail. The tool offers smooth zooming and panning which is more flexible than seen in other browsers. It presents information available in Ensembl for single chromosomes, as well as homologies (orthologue predictions including ortholog one2one, apparent ortholog one2one, ortholog many2many) for any two chromosomes from different species. The application can query supporting data from Ensembl by invoking a link in a browser

    Final Report of the Commission on Presidential Disability and the Twenty-Fifth Amendment

    Get PDF
    This Report examines the Twenty-Fifth Amendment to identify potential difficulties in presidential succession and makes recommendations

    Smoking in asthma is associated with elevated levels of corticosteroid resistant sputum cytokines—an exploratory study

    Get PDF
    <p>Background: Current cigarette smoking is associated with reduced acute responses to corticosteroids and worse clinical outcomes in stable chronic asthma. The mechanism by which current smoking promotes this altered behavior is currently unclear. Whilst cytokines can induce corticosteroid insensitivity in-vitro, how current and former smoking affects airway cytokine concentrations and their responses to oral corticosteroids in stable chronic asthma is unclear.</p> <p>Objectives: To examine blood and sputum cytokine concentrations in never, ex and current smokers with asthma before and after oral corticosteroids.</p> <p>Methods: Exploratory study utilizing two weeks of oral dexamethasone (equivalent to 40 mg/day prednisolone) in 22 current, 21 never and 10 ex-smokers with asthma. Induced sputum supernatant and plasma was obtained before and after oral dexamethasone. 25 cytokines were measured by multiplex microbead system (Invitrogen, UK) on a Luminex platform.</p> <p>Results: Smokers with asthma had elevated sputum cytokine interleukin (IL) -6, -7, and -12 concentrations compared to never smokers with asthma. Few sputum cytokine concentrations changed in response to dexamethasone IL-17 and IFNα increased in smokers, CCL4 increased in never smokers and CCL5 and CXCL10 reduced in ex-smokers with asthma. Ex-smokers with asthma appeared to have evidence of an ongoing corticosteroid resistant elevation of cytokines despite smoking cessation. Several plasma cytokines were lower in smokers wi</p> <p>Conclusion: Cigarette smoking in asthma is associated with a corticosteroid insensitive increase in multiple airway cytokines. Distinct airway cytokine profiles are present in current smokers and never smokers with asthma and could provide an explanatory mechanism for the altered clinical behavior observed in smokers with asthma.</p&gt
    corecore