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The effects of gasification temperature (850–1000°C) and partial pressure of CO2 (0.3–1.0 atm) on gasification rate of tire-char/CO2 have been determined in a thermobalance reactor. The gasification rate was found to be independent of char size for sizes less than 0.65 mm and initial sample...
Persistent link: https://www.econbiz.de/10011053462
The effects of bed temperature (700–900 °C), freeboard temperature (600–800 °C) and excess-air ratio (0–100%) on CO, NOx and SO2 emissions, axial temperature profiles, and combustion efficiency of shredded waste tires have been determined in a 76.2 mm i.d. × 1.2m high fluidized-bed...
Persistent link: https://www.econbiz.de/10011054561
The effects of feed rate of waste tires (0.21*0.52 kg/h), oxygen concentration (0–11%), pyrolysis temperature (700–800°C), and fluidizing gas velocity (1.5−3.0 μmf) on product (gas, oil, char) yield, composition, energy recovery, and heating value of the product gas have been determined...
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We propose autocorrelation-robust asymptotic variances of the Brier score and Brier skill score, which are generally applicable in circumstances with weak serial correlation. An empirical application in macroeconomics underscores the importance of taking care of serial correlation. We find that...
Persistent link: https://www.econbiz.de/10011242158
We develop a non-linear forecast combination rule based on copulas that incorporate the dynamic interaction between individual predictors. This approach is optimal in the sense that the resulting combined forecast produces the highest discriminatory power as measured by the receiver operating...
Persistent link: https://www.econbiz.de/10011155375
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The main focus of this paper is to explore the potential for improving econometric specification in modeling hedge fund returns. Specifically, we examine the effects of (1) correcting for selectivity bias due to sample attrition; (2) allowing for nonlinearity; and (3) controlling for...
Persistent link: https://www.econbiz.de/10011005964