The aim of this study is to conduct the validity analysis of the test paper of the academic English reading and writing course referring to the freshmen of non-English majors in a university of Technology in Shanghai....The aim of this study is to conduct the validity analysis of the test paper of the academic English reading and writing course referring to the freshmen of non-English majors in a university of Technology in Shanghai.The validity is mainly analyzed from these three aspects:the content and construct validity,the reaction process,and the internal structure of the test paper.And the principles of language assessment in the design of the test paper are given in this study.The validity study was also conducted in a class with 42 freshmen,and the scores of them were analyzed through the internal correlation coefficient from Statistic Package for Social Science(SPSS)25.0.Finally,the validity of the test paper is concluded.展开更多
This study develops a holistic view of the novel coronavirus(COVID-19)spread worldwide through a spatial–temporal model with network dynamics.By using a unique human mobility dataset containing 547166 flights with a ...This study develops a holistic view of the novel coronavirus(COVID-19)spread worldwide through a spatial–temporal model with network dynamics.By using a unique human mobility dataset containing 547166 flights with a total capacity of 101455913 passengers from January 22 to April 24,2020,we analyze the epidemic correlations across 22 countries in six continents and particularly the changes in such correlations before and after implementing the international travel restriction policies targeting different countries.Results show that policymakers should move away from the previous practices that focus only on restricting hotspot areas with high infection rates.Instead,they should develop a new holistic view of global human mobility to impose the international movement restriction.The study further highlights potential correlations between international human mobility and focal countries’epidemic situations in the global network of COVID-19 pandemic.展开更多
文摘The aim of this study is to conduct the validity analysis of the test paper of the academic English reading and writing course referring to the freshmen of non-English majors in a university of Technology in Shanghai.The validity is mainly analyzed from these three aspects:the content and construct validity,the reaction process,and the internal structure of the test paper.And the principles of language assessment in the design of the test paper are given in this study.The validity study was also conducted in a class with 42 freshmen,and the scores of them were analyzed through the internal correlation coefficient from Statistic Package for Social Science(SPSS)25.0.Finally,the validity of the test paper is concluded.
基金This work was supported by the National Natural Science Foundation of China(Nos.91846302,71720107003,and 71973107).
文摘This study develops a holistic view of the novel coronavirus(COVID-19)spread worldwide through a spatial–temporal model with network dynamics.By using a unique human mobility dataset containing 547166 flights with a total capacity of 101455913 passengers from January 22 to April 24,2020,we analyze the epidemic correlations across 22 countries in six continents and particularly the changes in such correlations before and after implementing the international travel restriction policies targeting different countries.Results show that policymakers should move away from the previous practices that focus only on restricting hotspot areas with high infection rates.Instead,they should develop a new holistic view of global human mobility to impose the international movement restriction.The study further highlights potential correlations between international human mobility and focal countries’epidemic situations in the global network of COVID-19 pandemic.
