Browsing by Author "Hassan, M"
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Item Open Access Cost of capital to the hospital sector.(J Health Econ, 1988-03) Sloan, FA; Valvona, J; Hassan, M; Morrisey, MAThis paper provides estimates of the cost of equity and debt capital to for-profit and non-profit hospitals in the U.S. for the years 1972-83. The cost of equity is estimated using, alternatively, the Capital Asset Pricing Model and Arbitrage Pricing Theory. We find that the cost of equity capital, using either model, substantially exceeded anticipated inflation. The cost of debt capital was much lower. Accounting for the corporate tax shield on debt and capital paybacks by cost-based insurers lowered the net cost of capital to hospitals.Item Open Access Equity and accuracy in medical malpractice insurance pricing.(J Health Econ, 1990-11) Sloan, FA; Hassan, MThis study examines alternative classification approaches for setting medical malpractice insurance premiums. Insurers generally form risk classification categories on factors other than the physician's own loss experience. Our analysis of such classification approaches indicates different but no more categories than now used. An actuarially-fair premium-setting scheme based on the frequency and severity of the individual physician's losses would substantially penalize adverse experience. Alternatively, premiums could be set for groups of physicians, such as hospital medical staffs. Our simulations suggest that even staffs at rather small hospitals may be large enough to be experience-rated.Item Open Access Hospital Investment Decisions and the Cost of Capital(Journal of Business, 1989-10) Sloan, FA; Wedig, G; Hassan, MItem Open Access Microbially induced calcite precipitation effect on soil thermal conductivity(Geotechnique Letters, 2016-01-06) Venuleo, S; Laloui, L; Terzis, D; Hueckel, T; Hassan, M© 2016, Thomas Telford Services Ltd. All rights reserved.Efficiency of energy piles is strongly affected by soil saturation conditions: low water contents considerably decrease their performance thus limiting the possibility to extend their application to arid environments. This paper investigates the microbially induced calcite precipitation (MICP) technique as a potential means of enhancing the soil–pile heat exchange rates by improving the thermal properties of soil. The study puts the focus on measuring the thermal conductivity of untreated and treaded sand at various degrees of saturation. Experimental results clearly show a significant improvement of the thermal conductivity of soil especially for low degrees of saturation. This enhancement is attributed to the mineralised calcite crystals acting as ‘thermal bridges’ between the soil grains, offering a larger surface area for heat exchange compared with the untreated material in which exchanges occur through smaller contact points.