A psychologist has come up with a formula for parents struggling to find the perfect toy for their children this Christmas. Dr.Cliff Arnall,who has previously come up with calculations for the happiest and most depres...A psychologist has come up with a formula for parents struggling to find the perfect toy for their children this Christmas. Dr.Cliff Arnall,who has previously come up with calculations for the happiest and most depressing day of the year,reckons that mathematics can be used to展开更多
This study investigates the differences in pragmatic competence between Hong Kong and Chinese mainland university students.Participants included 19 native speakers of English,115 Chinese mainland students,divided into...This study investigates the differences in pragmatic competence between Hong Kong and Chinese mainland university students.Participants included 19 native speakers of English,115 Chinese mainland students,divided into those who had spent time abroad in an English-speaking country(CM A)and those who had not(CM NA),and 97 Hong Kong students,divided into those from an English-medium secondary school(Hong Kong EMI)and those from a Chinese-medium school(Hong Kong CMI).Linguistic proficiency was measured by a C-test,and pragmatic competence by a Metapragmatic Knowledge Test,an Irony Test and a Monologic Role Play.Group scores were compared using ANCOVAs to control for differences in proficiency.The results point to a continuum of pragmatic competence—EMI>CMI>CM A>CM NA—reflecting the groups’access to English in real-life contexts.The differences between the Hong Kong groups and the Chinese mainland groups were clearest in those tests measuring processing capacity(i.e.,Irony Response Time and the Monologic Role Play).CM A,but not CM NA,performed as well as the Hong Kong groups on measures of metapragmatic awareness.The results are discussed in terms of Bialystok’s(1993)distinction between analyzed representation and control of processing.展开更多
文摘为了优化气隙磁通密度波形的幅值与正弦畸变率2个关键指标,提出了一种基于Kriging模型与差分进化算法(differential evolution algorithm,DEA)相结合的多目标优化方法。首先,通过对飞轮储能用永磁同步电机(permanent magnet synchronous motor for flywheel energy storage,FPMSM)有限元模型进行拉丁超立方体采样(Latin hypercube sampling,LHS),取得样本数据,并引入Kriging算法建立对应的替代模型;其次,利用DEA对影响气隙磁通密度波形的关键结构参数进行全局优化,给出Pareto最优解;最后,对Pareto最优解集的3种优化方案与原始方案进行对比分析和有限元验证。结果表明,所提FPMSM气隙磁通密度波形多目标优化方法能够使气隙磁通密度波形在幅值提高的同时,正弦畸变率显著降低。
文摘A psychologist has come up with a formula for parents struggling to find the perfect toy for their children this Christmas. Dr.Cliff Arnall,who has previously come up with calculations for the happiest and most depressing day of the year,reckons that mathematics can be used to
文摘This study investigates the differences in pragmatic competence between Hong Kong and Chinese mainland university students.Participants included 19 native speakers of English,115 Chinese mainland students,divided into those who had spent time abroad in an English-speaking country(CM A)and those who had not(CM NA),and 97 Hong Kong students,divided into those from an English-medium secondary school(Hong Kong EMI)and those from a Chinese-medium school(Hong Kong CMI).Linguistic proficiency was measured by a C-test,and pragmatic competence by a Metapragmatic Knowledge Test,an Irony Test and a Monologic Role Play.Group scores were compared using ANCOVAs to control for differences in proficiency.The results point to a continuum of pragmatic competence—EMI>CMI>CM A>CM NA—reflecting the groups’access to English in real-life contexts.The differences between the Hong Kong groups and the Chinese mainland groups were clearest in those tests measuring processing capacity(i.e.,Irony Response Time and the Monologic Role Play).CM A,but not CM NA,performed as well as the Hong Kong groups on measures of metapragmatic awareness.The results are discussed in terms of Bialystok’s(1993)distinction between analyzed representation and control of processing.
