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Thin solar concentrator with high concentration ratio
SPIE Proceedings, 2013Solar concentrators are often used in conjunction with III-V multi-junction solar cells for cost reduction and efficiency improvement purposes. High flux concentration ratio, high optical efficiency and high manufacture tolerance are the key features required for a successful solar concentrator design.
Jhe-Syuan Lin, Chao-Wen Liang
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Factors Influencing Cyclosporine Blood Concentration—Dose Ratio
Annals of Pharmacotherapy, 2002OBJECTIVE: To analyze the trough cyclosporine concentration—dose ratio (CDR) and its relationship to some commonly available factors such as cyclosporine dosage, patient age, grade of obesity, posttransplant days, serum creatinine, serum bilirubin, and serum cholesterol by multiple linear regression. METHODS: The study was performed on 866 samples from
Mar, García-Sáiz +4 more
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Conglomerate Mergers and Concentration Ratios
The Review of Economics and Statistics, 1974THE recent wave of conglomerate mergers has subsided considerably, but the effects of the large number of mergers are still being debated and subject to close scrutiny by government agencies. One of the most serious criticisms which has been leveled against conglomerate mergers is their presumed anticompetitive effect upon the industries of the ...
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Ratio Limit Theorem for Concentration Functions
Theory of Probability & Its Applications, 2002Let \(X_1,X_2,\ldots\) be a sequence of iid random variables with distribution function \(F\), and let \(Q(n,z)=\sup_xP\{x\leq S_n\leq x+z\}\) be the concentration function of the sequence \(S_0=0, S_n=X_1+\cdots+X_n.\) The author shows that if \(F\) is nonlattice, then for fixed \(z_1>0, z_2>0\), \[ \lim_{n\to\infty}\frac{Q(n+m,z_1)}{Q(n,z_2)}=\frac ...
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The Gini Concentration Ratio and the Minor Concentration Ratio: A Two Parameter Index of Inequality
The Review of Economics and Statistics, 1977,"Air Pollution and Property Values; A Reply," this REVIEW 54 (Nov. 1972), 470-473. Commission on the Third London Airport, Papers and Proceedings, VII, parts I and 2 (London: H.M.S.O., 1970). David, E. L., "Lake Shore Property Values: A Guide to Public Investment in Recreation," Water Resources Research, 4 (Aug. 1968), 692 707. Freeman, A. M.
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A resistant concentration ratio
2013In this paper a resistant version of the concentration ratio is proposed. This functional has a bounded influence function and the comparison of its value with the value of the Gini index supplies a diagnostic tool for influential observations.
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In Defense of the Average Concentration Ratio
Journal of Political Economy, 1975A substantial number of attempts to test the traditional structureperformance hypothesis of classical industrial organization economics have used weighted average concentration ratios as one of several independent variables.1 In a recent issue of this journal, Stanley Boyle (1973) claims to demonstrate that "the statistical weighting methods which have
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Maximum concentration ratio of direct solar radiation
Applied Optics, 1993I propose a refinement for a well-known formula that gives the maximum geometric concentration ratio of direct solar radiation.
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Fish/sediment concentration ratios for organic compounds
Environmental Science & Technology, 1984The concentration ratio of chlorinated or polynuclear aromatic hydrocarbons in fish to the sediments from their habitat increases with hydraulic retention time of the basin. Fish/sediment ratios for chlorinated hydrocarbons are about 3 orders of magnitude higher than for aromatic hydrocarbons with the same octanol-water partition coefficient ...
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Enhancing concentration ratio of solar concentrators
Solar irradiation is approximately 1kW/m2 on the surface of the Earth and utilising only 1 % of global solar resources could be enough to achieve the recommendations of international organisations to achieve a long-term climate stabilisation. Concentration of solar energy is a possible solution to overcome the low density disadvantage and to achieve a ...openaire +1 more source