A novel systematic quality monitoring and prediction method based on Fisher discriminant analysis (FDA) and kernel regression is proposed. The FDA method is first used for quality monitoring. If the process is un-der ...A novel systematic quality monitoring and prediction method based on Fisher discriminant analysis (FDA) and kernel regression is proposed. The FDA method is first used for quality monitoring. If the process is un-der normal condition, then kernel regression is further used for quality prediction and estimation. If faults have oc-curred, the contribution plot in the fault feature direction is used for fault diagnosis. The proposed method can ef-fectively detect the fault and has better ability to predict the response variables than principle component regression (PCR) and partial least squares (PLS). Application results to the industrial fluid catalytic cracking unit (FCCU) show the effectiveness of the proposed method.展开更多
This paper examines the effects of firm structure on the financial reporting quality of Nigerian-quoted manufacturing firms by using assets, the leverage, the share dispersion, and the residuals of the modified Edward...This paper examines the effects of firm structure on the financial reporting quality of Nigerian-quoted manufacturing firms by using assets, the leverage, the share dispersion, and the residuals of the modified Edward Bell Ohlson （EBO） model as proxies of firm structure and the financial reporting quality respectively. The data are extracted from 12 sample firms representing 50% （as the population of the study） of all the quoted manufacturing companies in Nigeria. A multiple regression is used as a tool of analysis for the study. The result reveals a strongly positive relationship between the firm structure and the financial reporting quality of the quoted manufacturing firms in Nigeria. Therefore, it is recommended among others that the regulators should enforce more on the financial statement disclosure and transparency among companies quoted on the Nigerian Stock Exchange （NSE）, in order to ensure a higher quality of the financial reporting展开更多
To meet the requirement of high-quality transmission of videos captured by unmanned aerial vehicles （UAV） with low bandwidth, a novel rate control （RC） scheme based on region-of-interest （ROI） is proposed. First...To meet the requirement of high-quality transmission of videos captured by unmanned aerial vehicles （UAV） with low bandwidth, a novel rate control （RC） scheme based on region-of-interest （ROI） is proposed. First, the ROI information is sent to the encoder with the latest high efficient video coding （HEVC） standard to generate an ROI map. Then, by using the ROI map, bit allocation methods are developed at frame level and large coding unit （LCU） level, to avoid inaccurate bit allocation produced by camera movement. At last, by using a better robustness R-2 model, the quantization parameter （QP） for each LCU is calculated. The experimental results show that the proposed RC method can get a lower bitrate error and a higher quality for reconstructed video by choosing appropriate pixel weight on the HEVC platform.展开更多
基金Supported by the National Natural Science Foundation of China (60504033)the Open Project of State Key Laboratory of Industrial Control Technology in Zhejiang University (0708004)
文摘A novel systematic quality monitoring and prediction method based on Fisher discriminant analysis (FDA) and kernel regression is proposed. The FDA method is first used for quality monitoring. If the process is un-der normal condition, then kernel regression is further used for quality prediction and estimation. If faults have oc-curred, the contribution plot in the fault feature direction is used for fault diagnosis. The proposed method can ef-fectively detect the fault and has better ability to predict the response variables than principle component regression (PCR) and partial least squares (PLS). Application results to the industrial fluid catalytic cracking unit (FCCU) show the effectiveness of the proposed method.
文摘This paper examines the effects of firm structure on the financial reporting quality of Nigerian-quoted manufacturing firms by using assets, the leverage, the share dispersion, and the residuals of the modified Edward Bell Ohlson （EBO） model as proxies of firm structure and the financial reporting quality respectively. The data are extracted from 12 sample firms representing 50% （as the population of the study） of all the quoted manufacturing companies in Nigeria. A multiple regression is used as a tool of analysis for the study. The result reveals a strongly positive relationship between the firm structure and the financial reporting quality of the quoted manufacturing firms in Nigeria. Therefore, it is recommended among others that the regulators should enforce more on the financial statement disclosure and transparency among companies quoted on the Nigerian Stock Exchange （NSE）, in order to ensure a higher quality of the financial reporting
文摘To meet the requirement of high-quality transmission of videos captured by unmanned aerial vehicles （UAV） with low bandwidth, a novel rate control （RC） scheme based on region-of-interest （ROI） is proposed. First, the ROI information is sent to the encoder with the latest high efficient video coding （HEVC） standard to generate an ROI map. Then, by using the ROI map, bit allocation methods are developed at frame level and large coding unit （LCU） level, to avoid inaccurate bit allocation produced by camera movement. At last, by using a better robustness R-2 model, the quantization parameter （QP） for each LCU is calculated. The experimental results show that the proposed RC method can get a lower bitrate error and a higher quality for reconstructed video by choosing appropriate pixel weight on the HEVC platform.
