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New rate-distortion modeling and efficient rate control for H.264/AVC video coding

Yimin Zhou, Auteur ; Yu Sun, Auteur ; Zhidan Feng, Auteur |

Dans Signal processing. Image communication (Vol. 24 N° 5, Mai 2009)

Rate control (RC) is crucial in controlling compression bit rates and qualities for networked video applications. In this paper, we propose a new rate-distortion (R-D) model and an efficient rate control scheme for H.264/AVC video coding, which[...]

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Removal of trace olefins from aromatics at room temperature using pyridinium and imidazolium ionic liquids

Yu Sun, Auteur ; Li Shi, Auteur |

Dans Industrial & engineering chemistry research (Vol. 50 N° 15, Août 2011)

[BuPy]Br-AlCl3 and [BMIm]Br-AlCl3 were used to remove trace olefins from aromatics. At room temperature, almost 100% olefin conversion was obtained using [BuPy]Br-AlCl3 as the catalyst. The effects of the cation and the dosage of AlCl3 in the io[...]

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Research on reactive adsorption desulfurization over Ni/ZnO−SiO2−Al2O3 adsorbent in a fixed-fluidized bed reactor

Jingxin Fan, Auteur ; Gang Wang, Auteur ; Yu Sun, Auteur |

Dans Industrial & engineering chemistry research (Vol. 49 N° 18, Septembre 2010)

Reactive adsorption desulfurization of FCC gasoline over a Ni/ZnO−SiO2−Al2O3 adsorbent was carried out in a fixed-fluidized bed reactor at low pressures in the presence of hydrogen. The results show that high temperature, high pressure, high mol[...]

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