Showing 1 - 10 of 19
The World Wide Web contains a vast corpus of consumer-generated content that holds invaluable insights for improving the product and service offerings of firms. Yet the typical method for extracting diagnostic information from online content--text mining--has limitations. As a starting point, we...
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Traditional methods of applying classification models into the area of credit scoring may ignore the effect from censoring. Survival analysis has been introduced with its ability to deal with censored data. The mixture cure model, one important branch of survival models, is also applied in the...
Persistent link: https://www.econbiz.de/10010939775
Based on the physical phenomena of optical effects produced by the partial discharge (PD) and on the characteristics of fluorescent fiber sensing of weak fluorescent signals, a PD measurement system using a fluorescent fiber sensor was designed. The main parameters of the sensing system were...
Persistent link: https://www.econbiz.de/10011031382
Coal bio-oil slurries (CBSs) were prepared by blending coal with bio-oil from the fast pyrolysis, and their apparent viscosities were measured by a rotary viscometer. The influences of coal rank, solid concentration, particle size distribution and temperature on the apparent viscosity and...
Persistent link: https://www.econbiz.de/10011053234
Thermal gravimetric (TG) analysis was conducted to compare the fundamental pyrolytic behaviors between the lignocellulose fermentation residue (LFR) and three other biomass raw materials. It was found that the TG weight loss curve of LFR appeared very close to the curve of acidified alkaline...
Persistent link: https://www.econbiz.de/10011054049
Triethylamine was found to be effective in promoting the cracking of heptane at the temperature of 550–650°C. The experimental yields of ethylene and propylene are more than twice as high as the calculated values on hypothesis of no interaction between triethylamine and heptane, when the mass...
Persistent link: https://www.econbiz.de/10011055355
This paper constructs the positive arbitrage position by alternating the spot index with Chinese Exchange Traded Fund (ETF) portfolio and estimating the arbitrage-free interval of futures with the latest trade data. Then, an improved Delta-normal method was used, which replaces the simple linear...
Persistent link: https://www.econbiz.de/10010744314
Biomass can be converted to liquid product for fuels and for chemicals by hydrothermal treatment. A method for further treatment of the liquid product much depends on the composition determination, and therefore analysis of the liquid product is important. The much water makes the analysis...
Persistent link: https://www.econbiz.de/10010702563