Aiming at studying the influence of actuating frequency on plasma assisted detonation initiation by alternating current dielectric barrier discharge, a loosely coupled method is used to simulate the detonation initiat...Aiming at studying the influence of actuating frequency on plasma assisted detonation initiation by alternating current dielectric barrier discharge, a loosely coupled method is used to simulate the detonation initiation process of a hydrogenoxygen mixture in a detonation tube at different actuating frequencies. Both the discharge products and the detonation forming process which is assisted by the plasma are analyzed. It is found that the patterns of the temporal and spatial distributions of discharge products in one cycle are not changed by the actuating frequency. However, the concentration of every species decreases as the actuating frequency rises, and atom O is the most sensitive to this variation, which is related to the decrease of discharge power. With respect to the reaction flow of the detonation tube, the deflagration-todetonation transition（DDT） time and distance both increase as the actuating frequency rises, but the degree of effect on DDT development during flow field evolution is erratic. Generally, the actuating frequency affects none of the amplitude value of the pressure, temperature, species concentration of the flow field, and the combustion degree within the reaction zone.展开更多
Currently, China is advancing the Belt and Road Initiative, which creates a new opportunity of historical significance and provides guidance for the economic and social development of ethnic minority communities(parti...Currently, China is advancing the Belt and Road Initiative, which creates a new opportunity of historical significance and provides guidance for the economic and social development of ethnic minority communities(particularly those in western China). Under the new historical conditions, it is necessary to innovate and improve China's regional aid policies and regional development strategies such as the "pairing assistance" and the Western Development, and organically combine them with the Belt and Road Initiative. In the meantime, China should revolve tightly around the internal and external "connectivity," and give full play to the functions of the "pairing assistance" policy and the "Western Development" strategy in a bid to boost the ethnic development of contemporary China within the framework of the Belt and Road Initiative.展开更多
The“counterpart aid to Xinjiang”is one of the important measures to implement the country’s western development strategy.It aims to shorten the gap between higher education in Xinjiang and the eastern region and to...The“counterpart aid to Xinjiang”is one of the important measures to implement the country’s western development strategy.It aims to shorten the gap between higher education in Xinjiang and the eastern region and to maintain the coordinated development of education,economy and society in the eastern and western regions.This article takes the counterpart support of Xinjiang students from the School of Foreign Languages of Jilin Engineering Normal University as an example to explore the problem of the initiative training of Xinjiang students in English learning in our school,mainly from the aspects of the students themselves,the teachers and the entire education and training environment of our school.The angle explains how to help them improve their learning initiative.This article is divided into three parts.The first is the analysis of the connotation of learning initiative;the second is its meaning;the last is how to build the learning initiative of Xinjiang students.展开更多
There are some positive and negative comments of the German experts from think tanks in terms of understanding and commenting on "The Belt and Road" Initiative (BRI). They analyzed the risks and difficulyt o...There are some positive and negative comments of the German experts from think tanks in terms of understanding and commenting on "The Belt and Road" Initiative (BRI). They analyzed the risks and difficulyt of "The Belt and Road" projects and thus proposed some suggestions on avoiding risks involved in the implementation of "The Belt and Road".展开更多
In the context of Chinese evidence law,the role of the expert asistant is to"offer opinion on the forensic expertise or specialized issues."This role is multiple facet,somewhat similar to a lawyer's role...In the context of Chinese evidence law,the role of the expert asistant is to"offer opinion on the forensic expertise or specialized issues."This role is multiple facet,somewhat similar to a lawyer's role,and to some extent similar to that of a forensic expert or a witness.For this simple reason,the views on the legal status of opinions of the expert assistant also vary from“cross-examination method,""forensic expertise"to"witmess tcstimony."This confusion regarding the role of the expert assistant often results in ifcultics in deciding whether to admit the expert assistant opinion as evidence at trial.The regulation that the expert assistant opinion"can be taken as evidence for determining facts of a case after cross-examination"stipulated in Paragraph 2 of Article 15 of the Supreme People's Court Interpretation of the Law in the Conduct of Environmental Civil Public Interest Litigations promulgated in 2015 could be seen as trends of a transition in the role of the expert assistant towards that of the expert witness.This article atempts to analyze reasons,sigificance,and prospects of sucha transition,and give suggestions to improve the application of examination rules for the expert winess and admissibility rules for scientifc evidence.展开更多
基金Project supported by the Open Project of Science and Technology on Scramjet Laboratory,China(Grant No.CG-2014-05-118)the National Natural Science Foundation of China(Grant No.91441123)
文摘Aiming at studying the influence of actuating frequency on plasma assisted detonation initiation by alternating current dielectric barrier discharge, a loosely coupled method is used to simulate the detonation initiation process of a hydrogenoxygen mixture in a detonation tube at different actuating frequencies. Both the discharge products and the detonation forming process which is assisted by the plasma are analyzed. It is found that the patterns of the temporal and spatial distributions of discharge products in one cycle are not changed by the actuating frequency. However, the concentration of every species decreases as the actuating frequency rises, and atom O is the most sensitive to this variation, which is related to the decrease of discharge power. With respect to the reaction flow of the detonation tube, the deflagration-todetonation transition（DDT） time and distance both increase as the actuating frequency rises, but the degree of effect on DDT development during flow field evolution is erratic. Generally, the actuating frequency affects none of the amplitude value of the pressure, temperature, species concentration of the flow field, and the combustion degree within the reaction zone.
基金a staged research result of"Studies on Regional Policy Innovation and Regional Coordinated Development"(13&ZD017)a key program of the National Social Sciences Fund+1 种基金the"Strategy of Building World-Class Centrally-administered Universities(Programs)and Promoting Characteristic Development"a program supported by special government funds(96176206)
文摘Currently, China is advancing the Belt and Road Initiative, which creates a new opportunity of historical significance and provides guidance for the economic and social development of ethnic minority communities(particularly those in western China). Under the new historical conditions, it is necessary to innovate and improve China's regional aid policies and regional development strategies such as the "pairing assistance" and the Western Development, and organically combine them with the Belt and Road Initiative. In the meantime, China should revolve tightly around the internal and external "connectivity," and give full play to the functions of the "pairing assistance" policy and the "Western Development" strategy in a bid to boost the ethnic development of contemporary China within the framework of the Belt and Road Initiative.
基金financially supported by the"13th Five-Year Plan"of Education Science in Jilin Province in 2017 as one of the research results of"Study of the initiative in English learning of the Xinjiang students assisted by other universities"(GHI 170652).
文摘The“counterpart aid to Xinjiang”is one of the important measures to implement the country’s western development strategy.It aims to shorten the gap between higher education in Xinjiang and the eastern region and to maintain the coordinated development of education,economy and society in the eastern and western regions.This article takes the counterpart support of Xinjiang students from the School of Foreign Languages of Jilin Engineering Normal University as an example to explore the problem of the initiative training of Xinjiang students in English learning in our school,mainly from the aspects of the students themselves,the teachers and the entire education and training environment of our school.The angle explains how to help them improve their learning initiative.This article is divided into three parts.The first is the analysis of the connotation of learning initiative;the second is its meaning;the last is how to build the learning initiative of Xinjiang students.
文摘There are some positive and negative comments of the German experts from think tanks in terms of understanding and commenting on "The Belt and Road" Initiative (BRI). They analyzed the risks and difficulyt of "The Belt and Road" projects and thus proposed some suggestions on avoiding risks involved in the implementation of "The Belt and Road".
文摘In the context of Chinese evidence law,the role of the expert asistant is to"offer opinion on the forensic expertise or specialized issues."This role is multiple facet,somewhat similar to a lawyer's role,and to some extent similar to that of a forensic expert or a witness.For this simple reason,the views on the legal status of opinions of the expert assistant also vary from“cross-examination method,""forensic expertise"to"witmess tcstimony."This confusion regarding the role of the expert assistant often results in ifcultics in deciding whether to admit the expert assistant opinion as evidence at trial.The regulation that the expert assistant opinion"can be taken as evidence for determining facts of a case after cross-examination"stipulated in Paragraph 2 of Article 15 of the Supreme People's Court Interpretation of the Law in the Conduct of Environmental Civil Public Interest Litigations promulgated in 2015 could be seen as trends of a transition in the role of the expert assistant towards that of the expert witness.This article atempts to analyze reasons,sigificance,and prospects of sucha transition,and give suggestions to improve the application of examination rules for the expert winess and admissibility rules for scientifc evidence.
