The methods of modifying dimension and shape of structure, or covering damping material are effective to reduce structure-borne noise, while these methods are based on the knowledge of qualitative and quantitative rel...The methods of modifying dimension and shape of structure, or covering damping material are effective to reduce structure-borne noise, while these methods are based on the knowledge of qualitative and quantitative relationship between sound radiation and design parameters. In order to decrease the complexity of the problem, response surface method(RSM) was utilized to analyze and optimize the vibro-acoustic properties of the damping structure. A simple case was illustrated to demonstrate the capabilities of the developed procedure. A structure-born noise problem was approximated by a series of polynomials using RSM. Three main performances were considered, i.e. sound radiation power, first order modal frequency and total mass. Consequently, the response surface model not only gives the direction of design modification, it also leads to an optimal design of complex systems.展开更多
For many years now, scholars or researchers have been advocating for an androgynous or all-embracing （multicultural） approach in teaching and learning of musical arts and other performing arts at universities, perfo...For many years now, scholars or researchers have been advocating for an androgynous or all-embracing （multicultural） approach in teaching and learning of musical arts and other performing arts at universities, performing arts centres and other institutions. This article discusses the study and teaching situation of musical arts in South Africa, based on the research of nine institutions of higher learning. The major objective of this article therefore is to explore the extent to which South African institutions of higher learning and performing arts centres have incorporated the arts and culture of the historically marginalised people of South Africa in their respective curricula. From the results, it points out that music departments at South African institutions of higher learning have not yet fully transformed their programmes away from European models to programmes that affirm and embrace all the musical styles and genres practiced in the country. The article provides an advocacy for a strong androgynic approach in the study and teaching of performing arts in South Africa： the incorporation of both African indigenous and Western art forms in the respective curricula.展开更多
1.概况 《篇章中的词汇模型》原名为Patterns of Lexis in Text,系当代英国语言学家Michael Hoey博士关于衔接理论与应用的一部新著。全书共276页,1991年由牛津大学出版社出版。该书从研究词汇衔接人手,建立了词汇衔接模型,拓展了篇章...1.概况 《篇章中的词汇模型》原名为Patterns of Lexis in Text,系当代英国语言学家Michael Hoey博士关于衔接理论与应用的一部新著。全书共276页,1991年由牛津大学出版社出版。该书从研究词汇衔接人手,建立了词汇衔接模型,拓展了篇章衔接理论,进而对系统功能语言学M. A. K. Halliday的语言模式作了重新解释与修订,从而克服了以句子语法笼统描写篇章所带来的局限,因而有重要的理论和应用价值。展开更多
文摘The methods of modifying dimension and shape of structure, or covering damping material are effective to reduce structure-borne noise, while these methods are based on the knowledge of qualitative and quantitative relationship between sound radiation and design parameters. In order to decrease the complexity of the problem, response surface method(RSM) was utilized to analyze and optimize the vibro-acoustic properties of the damping structure. A simple case was illustrated to demonstrate the capabilities of the developed procedure. A structure-born noise problem was approximated by a series of polynomials using RSM. Three main performances were considered, i.e. sound radiation power, first order modal frequency and total mass. Consequently, the response surface model not only gives the direction of design modification, it also leads to an optimal design of complex systems.
文摘For many years now, scholars or researchers have been advocating for an androgynous or all-embracing （multicultural） approach in teaching and learning of musical arts and other performing arts at universities, performing arts centres and other institutions. This article discusses the study and teaching situation of musical arts in South Africa, based on the research of nine institutions of higher learning. The major objective of this article therefore is to explore the extent to which South African institutions of higher learning and performing arts centres have incorporated the arts and culture of the historically marginalised people of South Africa in their respective curricula. From the results, it points out that music departments at South African institutions of higher learning have not yet fully transformed their programmes away from European models to programmes that affirm and embrace all the musical styles and genres practiced in the country. The article provides an advocacy for a strong androgynic approach in the study and teaching of performing arts in South Africa： the incorporation of both African indigenous and Western art forms in the respective curricula.
文摘1.概况 《篇章中的词汇模型》原名为Patterns of Lexis in Text,系当代英国语言学家Michael Hoey博士关于衔接理论与应用的一部新著。全书共276页,1991年由牛津大学出版社出版。该书从研究词汇衔接人手,建立了词汇衔接模型,拓展了篇章衔接理论,进而对系统功能语言学M. A. K. Halliday的语言模式作了重新解释与修订,从而克服了以句子语法笼统描写篇章所带来的局限,因而有重要的理论和应用价值。
