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Institutional Repository
4809 Publications
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  • Equality measures properties for location problems

    Barbati, Maria; Piccolo, Carmela (2015)
    The objectives underlying location decisions can be various. Among them, equity objectives have received an increasing attention in recent years, especially in the applications related to the public sector, where fair distributions of accessibility to the services should be guaranteed among users. In the literature a huge number of equality measures have been proposed; then, the problem of selecting the most appropriate one to be adopted in the decision-making processes is crucial. For this r...

    The XMM Cluster Survey:forecasting cosmological and cluster scaling-relation parameter constraints

    Sahlen, Martin; Viana, Pedro T. P.; Liddle, Andrew R.; Romer, A. Kathy; Davidson, Michael; Hosmer, Mark; Lloyd-Davies, Ed; Sabirli, Kivanc; Collins, Chris A.; Freeman, Peter E.; Hilton, Matt; Hoyle, Ben; Kay, Scott T.; Mann, Robert G.; Mehrtens, Nicola;... (2009)
    We forecast the constraints on the values of σ8, Ωm and cluster scaling-relation parameters which we expect to obtain from the XMM Cluster Survey (XCS). We assume a flat Λ cold dark matter Universe and perform a Monte Carlo Markov Chain analysis of the evolution of the number density of galaxy clusters that takes into account a detailed simulated selection function. Comparing our current observed number of clusters shows good agreement with predictions. We determine the expected degradation o...

    Use of remotely-sensed land surface temperature as a proxy for air temperatures at high elevations:findings from a 5000 metre elevational transect across Kilimanjaro

    Pepin, N. C.; Maeda, E. E.; Williams, R. (2016)
    High elevations are thought to be warming more rapidly than lower elevations, but there is a lack of air temperature observations in high mountains. This study compares instantaneous values of land surface temperature (1030/2230 and 0130/1330 local solar time) as measured by MODIS MOD11A2/MYD11A2 at 1 km resolution from the TERRA and AQUA platforms respectively with equivalent screen level air temperatures (in the same pixel). We use a transect of 22 in situ weather stations across Kilimanjar...

    Preparation and evaluation of a thermosensitive hydrogel for the nasal delivery of insulin

    Nazar, Hamde (2012)
    Towards the development of a drug delivery vehicle for the nasal delivery of insulin, N-trimethyl chitosan has been co-formulated with poly(ethylene glycol) and glycerophosphate into a thermosensitive hydrogel structure, the sol-to-gel transition properties of which occur at physiologically relevant temperatures over optimally brief timescales. In vitro experiments mimicking those of the nasal environment have indicated the dual capability of the formulation to affect the opening of tight jun...

    The sustainability of community-based ecotourism in Southern Africa

    Mearns, Kevin (2010)
    The global trend towards sustainability is influencing humankind on a daily basis. One of the aspects of human life that is significantly influenced by this trend is decision making with regard to travel and holidays. The investigation was initiated in an attempt to monitor the sustainability of community-based ecotourism in southern Africa and to set a baseline for future comparison. A comprehensive inventory of 331 community-based tourism ventures across southern Africa was compiled as p...
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