Appraisal Theory is a further development of interpersonal function in systemic functional linguistics. Based on the subsystem-attitude system in Appraisal Theory, an attempt is made to conduct a comparative analysis ...Appraisal Theory is a further development of interpersonal function in systemic functional linguistics. Based on the subsystem-attitude system in Appraisal Theory, an attempt is made to conduct a comparative analysis of attitudinal resources in English and Chinese news on MH370 accident. Meanwhile, certain attitudes or stances conveyed by the authors of these news will be revealed through some typical examples. Both quantitative and qualitative methods are adopted in the present study to make a statistical and interpretive analysis of the collected materials. It is found that both English and Chinese news contain many attitudinal resources. There are similarities and differences concerning the distribution of attitudinal resources between English and Chinese news. The findings suggest that though news is expected to be objective and factual, it may imply the authors＇ subjective attitudes to some extent. So readers should get hang of the different opinions and stances hidden behind different news reporting so as to improve abilities to appreciate and differentiate different news.展开更多
The total photodetachment cross section of a linear triatomic anion is derived for arbitrary laser polarization direction. The cross section is ,shown to be strongly oscillatory when the laser polarization direction i...The total photodetachment cross section of a linear triatomic anion is derived for arbitrary laser polarization direction. The cross section is ,shown to be strongly oscillatory when the laser polarization direction is parallel to the axis of the system; the oscillation amplitude decreases and vanishes as the angle between the laser polarization and the anion axis increases and becomes perpendicular to the axis. The average cross section over the orientations of the triatomie system is also obtained. The cross section of the triatomic anion is compared with the cross section of a two-center system. We find there are two oscillation frequencies in the triatomie anion in contrast to only one oscillation frequency in the two-center case. Closed-orbit theory is used to explain the oscillations.展开更多
This paper studies identification of systems in which the system output is quantized, transmitted through a digital communication channel, and observed afterwards. The concept of the CR Ratio is introduced to characte...This paper studies identification of systems in which the system output is quantized, transmitted through a digital communication channel, and observed afterwards. The concept of the CR Ratio is introduced to characterize impact of communication channels on identification. The relationship between the CR Ratio and Shannon channel capacity is discussed. Identification algorithms are further developed when the channel error probability is unknown.展开更多
文摘Appraisal Theory is a further development of interpersonal function in systemic functional linguistics. Based on the subsystem-attitude system in Appraisal Theory, an attempt is made to conduct a comparative analysis of attitudinal resources in English and Chinese news on MH370 accident. Meanwhile, certain attitudes or stances conveyed by the authors of these news will be revealed through some typical examples. Both quantitative and qualitative methods are adopted in the present study to make a statistical and interpretive analysis of the collected materials. It is found that both English and Chinese news contain many attitudinal resources. There are similarities and differences concerning the distribution of attitudinal resources between English and Chinese news. The findings suggest that though news is expected to be objective and factual, it may imply the authors＇ subjective attitudes to some extent. So readers should get hang of the different opinions and stances hidden behind different news reporting so as to improve abilities to appreciate and differentiate different news.
文摘The total photodetachment cross section of a linear triatomic anion is derived for arbitrary laser polarization direction. The cross section is ,shown to be strongly oscillatory when the laser polarization direction is parallel to the axis of the system; the oscillation amplitude decreases and vanishes as the angle between the laser polarization and the anion axis increases and becomes perpendicular to the axis. The average cross section over the orientations of the triatomie system is also obtained. The cross section of the triatomic anion is compared with the cross section of a two-center system. We find there are two oscillation frequencies in the triatomie anion in contrast to only one oscillation frequency in the two-center case. Closed-orbit theory is used to explain the oscillations.
基金This research is supported in part by supported in part by the National Science Foundation under ECS-0329597, DMS-0603287, and DMS-0624849.
文摘This paper studies identification of systems in which the system output is quantized, transmitted through a digital communication channel, and observed afterwards. The concept of the CR Ratio is introduced to characterize impact of communication channels on identification. The relationship between the CR Ratio and Shannon channel capacity is discussed. Identification algorithms are further developed when the channel error probability is unknown.
