As a new research field,multimodal discourse analysis is facing a lot of challenges.On the one hand,the status of multimodality in traditional linguistics is questioned.Many linguists argue that nonlinguistic signs su...As a new research field,multimodal discourse analysis is facing a lot of challenges.On the one hand,the status of multimodality in traditional linguistics is questioned.Many linguists argue that nonlinguistic signs such as gestures and visual images are out of the scope of linguistics.On the other hand,the theories and methods of multimodal discourse analysis are still at an early stage of development and have many limitations.Moreover,many researchers have misunderstandings of the field.In view of these,this article provides a brief explanation of the basic questions of multimodal discourse analysis,including why we analyze multimodal discourse,whether linguistic theories are applicable to nonlinguistic signs such as visual images and gesture,what is the scope of multimodal research,what are the main theories and methods,and what are the limitations and misunderstandings.It further points out that researchers need to have the awareness of making their research interdisciplinary,empirical,and application-oriented.It argues that multimodal research should be based on theoretical and methodological innovation,and should aim at solving real communication problems in the multimedia age.The accurate understanding of these questions is crucial for developing multimodal discourse analysis into a new discipline with strong theoretical and methodological support.展开更多
Intercepted signal blind separation is a research topic with high importance for both military and civilian communication systems. A blind separation method for space-time block code （STBC） systems is proposed by us...Intercepted signal blind separation is a research topic with high importance for both military and civilian communication systems. A blind separation method for space-time block code （STBC） systems is proposed by using the ordinary independent component analysis （ICA）. This method cannot work when specific complex modulations are employed since the assumption of mutual independence cannot be satisfied. The analysis shows that source signals, which are group-wise independent and use multi-dimensional ICA （MICA） instead of ordinary ICA, can be applied in this case. Utilizing the block-diagonal structure of the cumulant matrices, the JADE algorithm is generalized to the multidimensional case to separate the received data into mutually independent groups. Compared with ordinary ICA algorithms, the proposed method does not introduce additional ambiguities. Simulations show that the proposed method overcomes the drawback and achieves a better performance without utilizing coding information than channel estimation based algorithms.展开更多
Critical Discourse Analysis derives from traditional critical linguistics.It is a new language theory in western language study emerging between 1970 s and1980s.This theory aims to analyze the non-literary discourse f...Critical Discourse Analysis derives from traditional critical linguistics.It is a new language theory in western language study emerging between 1970 s and1980s.This theory aims to analyze the non-literary discourse from the angle of criticism.Starting from the definition of critical discourse analysis and political discourse,this papers describes the current development of critical analysis approach for political discourse,explores this critical analysis course,and anticipates the tendency of critical political discourse analysis in our country.展开更多
This paper,by using the theory of Seven Building Tasks to analyze the Prose The Great Goal2 which was ever analyzed from the perspective of theme and rheme structure,aims to demonstrate the application of the new theo...This paper,by using the theory of Seven Building Tasks to analyze the Prose The Great Goal2 which was ever analyzed from the perspective of theme and rheme structure,aims to demonstrate the application of the new theory Severn Building Tasks to analyzing an essay,and thus provide a fresh theory and approach for English learners to analyze prose and learn the English language.展开更多
This paper proposes a reliability evaluation model for a multi-dimensional network system,which has potential to be applied to the internet of things or other practical networks.A multi-dimensional network system with...This paper proposes a reliability evaluation model for a multi-dimensional network system,which has potential to be applied to the internet of things or other practical networks.A multi-dimensional network system with one source element and multiple sink elements is considered first.Each element can con-nect with other elements within a stochastic connection ranges.The system is regarded as successful as long as the source ele-ment remains connected with all sink elements.An importance measure is proposed to evaluate the performance of non-source elements.Furthermore,to calculate the system reliability and the element importance measure,a multi-valued decision diagram based approach is structured and its complexity is analyzed.Finally,a numerical example about the signal transfer station system is illustrated to analyze the system reliability and the ele-ment importance measure.展开更多
文摘As a new research field,multimodal discourse analysis is facing a lot of challenges.On the one hand,the status of multimodality in traditional linguistics is questioned.Many linguists argue that nonlinguistic signs such as gestures and visual images are out of the scope of linguistics.On the other hand,the theories and methods of multimodal discourse analysis are still at an early stage of development and have many limitations.Moreover,many researchers have misunderstandings of the field.In view of these,this article provides a brief explanation of the basic questions of multimodal discourse analysis,including why we analyze multimodal discourse,whether linguistic theories are applicable to nonlinguistic signs such as visual images and gesture,what is the scope of multimodal research,what are the main theories and methods,and what are the limitations and misunderstandings.It further points out that researchers need to have the awareness of making their research interdisciplinary,empirical,and application-oriented.It argues that multimodal research should be based on theoretical and methodological innovation,and should aim at solving real communication problems in the multimedia age.The accurate understanding of these questions is crucial for developing multimodal discourse analysis into a new discipline with strong theoretical and methodological support.
基金supported by the National Natural Science Foundation of China (61201282)
文摘Intercepted signal blind separation is a research topic with high importance for both military and civilian communication systems. A blind separation method for space-time block code （STBC） systems is proposed by using the ordinary independent component analysis （ICA）. This method cannot work when specific complex modulations are employed since the assumption of mutual independence cannot be satisfied. The analysis shows that source signals, which are group-wise independent and use multi-dimensional ICA （MICA） instead of ordinary ICA, can be applied in this case. Utilizing the block-diagonal structure of the cumulant matrices, the JADE algorithm is generalized to the multidimensional case to separate the received data into mutually independent groups. Compared with ordinary ICA algorithms, the proposed method does not introduce additional ambiguities. Simulations show that the proposed method overcomes the drawback and achieves a better performance without utilizing coding information than channel estimation based algorithms.
基金the key research program"Comparison Study of China-US Political Discourse with Critical Discourse Analysis Theory"of Anhui Humanities and Social Sciences Research Foundation(No.SK2015 A445)entrusted program of Shanghai Foreign Language Education Press"A Study of Political Discourse from the Perspective of CDA"(No.SK2015 A799)2013 Quality Engineering Program"College English Curriculum Teaching Team"of Fuyang Normal University(No.2013JXTD07)
文摘Critical Discourse Analysis derives from traditional critical linguistics.It is a new language theory in western language study emerging between 1970 s and1980s.This theory aims to analyze the non-literary discourse from the angle of criticism.Starting from the definition of critical discourse analysis and political discourse,this papers describes the current development of critical analysis approach for political discourse,explores this critical analysis course,and anticipates the tendency of critical political discourse analysis in our country.
基金by-product of the provincial funding project:Empirical Study of Raising Postgraduates' Creative Thinking Ability黔教研合JG字(2015)003
文摘This paper,by using the theory of Seven Building Tasks to analyze the Prose The Great Goal2 which was ever analyzed from the perspective of theme and rheme structure,aims to demonstrate the application of the new theory Severn Building Tasks to analyzing an essay,and thus provide a fresh theory and approach for English learners to analyze prose and learn the English language.
基金supported by the National Natural Science Foundation of China(72101025,72271049),the Interdisciplinary Research Project for Young Teachers of USTB(Fundamental Research Funds for the Central Universities,FRF-IDRY-24-024)the Hebei Natural Science Foundation(F2023501011)+1 种基金the Fundamental Research Funds for the Central Universities(FRF-TP-20-073A1)the R&D Program of Beijing Municipal Education Commission(KM202411232015).
文摘This paper proposes a reliability evaluation model for a multi-dimensional network system,which has potential to be applied to the internet of things or other practical networks.A multi-dimensional network system with one source element and multiple sink elements is considered first.Each element can con-nect with other elements within a stochastic connection ranges.The system is regarded as successful as long as the source ele-ment remains connected with all sink elements.An importance measure is proposed to evaluate the performance of non-source elements.Furthermore,to calculate the system reliability and the element importance measure,a multi-valued decision diagram based approach is structured and its complexity is analyzed.Finally,a numerical example about the signal transfer station system is illustrated to analyze the system reliability and the ele-ment importance measure.
