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Baoguo Pan,Min Chen,Yan Wang,Wei Xia 한국통계학회 2015 Journal of the Korean Statistical Society Vol.44 No.1
In this paper a weighted least absolute deviations (WLAD) estimator for fractionally autoregressiveintegrated moving average (ARFIMA) models is proposed, in which stationaryand non-stationary cases are discussed. The asymptotic normality of their local estimatorsis derived under a fractional moment condition. A Wald test for a linear hypothesis hasbeen constructed, its limiting distribution is presented, and a simulation study is given toevaluate the performance of the proposed WLAD estimator under the stationary case.
孫寶國(Sun Baoguo) 중국어문학연구회 2008 중국어문학논집 Vol.0 No.50
In the translation of Chinese texts, especially Chinese classical works, the translating method of foreignization , that is to say, adopting literal translation, amplification, literal translation with annotations, etc., should be advocated in order to better introduce Chinese culture to other countries. Only through this way can we retain the elegance of Chinese culture and make it standing erect in the world.
孫?國(Sun BaoGuo),崔昌源(Choi Chang-won) 중국어문학연구회 2008 중국어문학논집 Vol.0 No.48
P'yohae-rok, written by Ch'oe Pu is one of the most important works in Yon Haeng Rok of ancient Korea. It is really an excellent work not only because it possesses an important historical value, but also because it is well organized and gracefully worded. From the perspective of linguistic discourse, the author makes a detailed analysis of the style, lexicon and syntax of the work, and draws a conclusion that Choi Pu’s P'yohae-rok has a feature of current affairs, and uses many three-character and four-character structures. Besides, Ch'oi Pu employs a lot of rhetorical words to convey his emotion and set off the atmosphere in scenery description. At the same time, the work is characteristic of linear syntax.
Influence of CeO2 morphology on the catalytic oxidation of ethanol in air
Guilin Zhou,Baoguo Gui,Hongmei Xie,Fang Yang,Yong Chen,Shengming Chen,Xuxu Zheng 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.1
Nano-CeO2 catalysts of different shapes were synthesized at different hydrothermal crystallizationtemperatures from an alkaline aqueous solution. X-ray diffraction (XRD), transmission electronmicroscope (TEM), and H2 temperature-programmed reduction (H2-TPR) were used to study thesynthesized nano-CeO2 catalyst samples. The catalytic properties of the prepared nano-CeO2 catalystsfor the catalytic oxidation of ethanol in air were also investigated. TEM analysis showed that CeO2nanorod and nanocube catalysts have been synthesized at hydrothermal crystallization temperatures of373 K and 453 K, respectively. XRD results showed that the synthesized nano-CeO2 catalysts have similarcubic fluorite structures. H2-TPR results indicated that CeO2 nanorod and nanocube catalysts exhibitdifferent reduction behaviors for H2 and that the nanorod catalyst has better low-temperature reductionperformance than the nanocube catalyst. Ethanol catalytic oxidation results indicated that oxidation andcondensation products (including acetaldehyde, acetic acid, CO2, and ethyl acetate) have been producedfrom the prepared catalysts. The ethyl acetate and acetic acid can be ignited by ethanol at lowtemperature on the CeO2(R) catalyst to give low catalytic combustion temperature for ethyl acetate andacetic acid molecules. CeO2 nanorods gave ethanol oxidation conversion rates above 99.2% at 443 K andCO2 selectivity exceeding 99.6% at 483 K, while CeO2 nanocubes gave ethanol oxidation conversion ratesof about 95.1% until 508 K and CO2 selectivity of only 93.86% at 543 K. CeO2 nanorod is a potential lowcostand effective catalyst for removing trace amounts of ethanol to purify air.