同学们,让我们认识一位新朋友--来自加拿大的Eric。他将在中国度过一年的学习时光,他对中国的文化特别感兴趣。本期,他提了个有趣的问题:The Spring Festival is coming. Chinese call it“Nian”. What is Nian?要回答这个问题,请你先...同学们,让我们认识一位新朋友--来自加拿大的Eric。他将在中国度过一年的学习时光,他对中国的文化特别感兴趣。本期,他提了个有趣的问题:The Spring Festival is coming. Chinese call it“Nian”. What is Nian?要回答这个问题,请你先给他读一读下面的故事吧!展开更多
By generalizing a criterion of Mufa Chen for Markov jump processes,we establish the necessary and sufficient conditions for the extinction,explosion and coming down from infinity of a continuous-state nonlinear Neveu...By generalizing a criterion of Mufa Chen for Markov jump processes,we establish the necessary and sufficient conditions for the extinction,explosion and coming down from infinity of a continuous-state nonlinear Neveu’s branching process.展开更多
Editor's note: Of late, some scholars at home and abroad have presented or played up the notion that China is about to collapse, arousing a good deal of reaction and concern internationally. Chinese scholars and e...Editor's note: Of late, some scholars at home and abroad have presented or played up the notion that China is about to collapse, arousing a good deal of reaction and concern internationally. Chinese scholars and economists have responded to the notion from different angles. Printed here below are the views of Dr. Fan Gang. It is hoped that more people of insight would join the discussion.展开更多
The second coming is a master work of William Butler Yeats which is also one of the most thematically obscure poems.By analyzing the poem based on Yeats’philosophy of occultism and historical background as well as th...The second coming is a master work of William Butler Yeats which is also one of the most thematically obscure poems.By analyzing the poem based on Yeats’philosophy of occultism and historical background as well as the Bible,this paper states the theme of this poem is that western civilization has been destroyed by wars with the consequence of the appearance of anticivilization;then,a new civilization will come into being.展开更多
U.S.President Donald Trump’s recognition of Jerusalem as the capital of Israel,and the subsequent decision to relocate the U.S.embassy there from Tel Aviv in December 2017,invoked a tempest of criticism from around t...U.S.President Donald Trump’s recognition of Jerusalem as the capital of Israel,and the subsequent decision to relocate the U.S.embassy there from Tel Aviv in December 2017,invoked a tempest of criticism from around the world.展开更多
We have studied the electronic structures in titanium alumohydride compounds （in which Al is five-coordinate） Cp2Ti（u-H）2AlH2NH3（Ⅱ）, Cp2Ti（u-H）2AlCl2H2O（Ⅲ） and Cp2Ti（u-H）2AlH3（Ⅳ） (coming from real mol...We have studied the electronic structures in titanium alumohydride compounds （in which Al is five-coordinate） Cp2Ti（u-H）2AlH2NH3（Ⅱ）, Cp2Ti（u-H）2AlCl2H2O（Ⅲ） and Cp2Ti（u-H）2AlH3（Ⅳ） (coming from real molecules Cp2Ti（u-H）2AlH2N（CH3）2-CH2—)2（V）, Cp2Ti（u-H）2AlCl2O（C2H2）2（Ⅳ） and Cp2W（u-H）2Al（CH3）3（Ⅶ）, respectively) by CNDO/2 method and compared them with the electronic structure of Cp2Ti（u-H）2AlH2（Ⅰ） （in which Al is four-coordinate）. The results are in agreement with experiments. （1） Electronic structures in Ⅱ and Ⅲ. The results indicated that （i） the molecular orbitals which have large contribution to hydrogen bridge Ti（u-Hb）2Al in展开更多
A new year is coming.新年到,万象更新,让我们了解new多一点。和好久不见的朋友如何“破冰”?无论是打电话还是发信息,都可以大大方方地说:"What's new?"new和字母s“联手”,就是"新闻"。Listening to the new...A new year is coming.新年到,万象更新,让我们了解new多一点。和好久不见的朋友如何“破冰”?无论是打电话还是发信息,都可以大大方方地说:"What's new?"new和字母s“联手”,就是"新闻"。Listening to the news every day is a good habit.展开更多
In the therapeutic measure of humandiseases depicted by medicine in future,va-rious sorts of anesthetic treatment are be-coming more significant.The miraculousspinal pinching therapy in traditionalChinese medicine,lik...In the therapeutic measure of humandiseases depicted by medicine in future,va-rious sorts of anesthetic treatment are be-coming more significant.The miraculousspinal pinching therapy in traditionalChinese medicine,like the suggestiontherapy in Western medicine,has a ratheroptimistic prospect.展开更多
英语中一部分单词加上前缀in-或un-,可表示“不”、“无”、“非”等否定含义。它们与其同形的词根在意义上通常构成反义,如:correct/incorrect(正确的/不正确的);close/unclose(关、闭/打开)等。但是,有些由前缀in-或un-构成的派生词...英语中一部分单词加上前缀in-或un-,可表示“不”、“无”、“非”等否定含义。它们与其同形的词根在意义上通常构成反义,如:correct/incorrect(正确的/不正确的);close/unclose(关、闭/打开)等。但是,有些由前缀in-或un-构成的派生词却并无否定意义。它们与原词根貌似反义,实则同义或近义,使用时切勿望文生义。如: 1.habit vt.居住在 inhabit vt.居住于 1)They had habited different parts of the globe. 他们曾在世界各地住过。展开更多
China has made no secret of its ambitions to develop a large airplane.But the doubt is whether the homegrown aircraft manufacturer will be able to overcome Boeing and Airbus
Source:MIT Technology ntroduction Not all breakthroughs are created equal.Some arrive more or less as usable things;others mainly set the stage for innovations that emerge later,and we have to estimate when that will ...Source:MIT Technology ntroduction Not all breakthroughs are created equal.Some arrive more or less as usable things;others mainly set the stage for innovations that emerge later,and we have to estimate when that will be.But we’d bet that every one of the milestones on this list will be worth following in the coming years.1.Magic展开更多
文摘同学们,让我们认识一位新朋友--来自加拿大的Eric。他将在中国度过一年的学习时光,他对中国的文化特别感兴趣。本期,他提了个有趣的问题:The Spring Festival is coming. Chinese call it“Nian”. What is Nian?要回答这个问题,请你先给他读一读下面的故事吧!
基金Supported by NSFC(Grant No.12061004)NSF of Ningxia(Grant No.2021AAC02018)+2 种基金the Fundamental Research Funds for the Central Universities,North Minzu University(Grant No.2020KYQD17)Major research project for North Minzu University(Grant No.ZDZX201902)the Construction Project of First-Class Disciplines in Ningxia Higher Education(Grant No.NXYLXK2017B09)。
文摘By generalizing a criterion of Mufa Chen for Markov jump processes,we establish the necessary and sufficient conditions for the extinction,explosion and coming down from infinity of a continuous-state nonlinear Neveu’s branching process.
文摘Editor's note: Of late, some scholars at home and abroad have presented or played up the notion that China is about to collapse, arousing a good deal of reaction and concern internationally. Chinese scholars and economists have responded to the notion from different angles. Printed here below are the views of Dr. Fan Gang. It is hoped that more people of insight would join the discussion.
文摘The second coming is a master work of William Butler Yeats which is also one of the most thematically obscure poems.By analyzing the poem based on Yeats’philosophy of occultism and historical background as well as the Bible,this paper states the theme of this poem is that western civilization has been destroyed by wars with the consequence of the appearance of anticivilization;then,a new civilization will come into being.
文摘U.S.President Donald Trump’s recognition of Jerusalem as the capital of Israel,and the subsequent decision to relocate the U.S.embassy there from Tel Aviv in December 2017,invoked a tempest of criticism from around the world.
文摘We have studied the electronic structures in titanium alumohydride compounds （in which Al is five-coordinate） Cp2Ti（u-H）2AlH2NH3（Ⅱ）, Cp2Ti（u-H）2AlCl2H2O（Ⅲ） and Cp2Ti（u-H）2AlH3（Ⅳ） (coming from real molecules Cp2Ti（u-H）2AlH2N（CH3）2-CH2—)2（V）, Cp2Ti（u-H）2AlCl2O（C2H2）2（Ⅳ） and Cp2W（u-H）2Al（CH3）3（Ⅶ）, respectively) by CNDO/2 method and compared them with the electronic structure of Cp2Ti（u-H）2AlH2（Ⅰ） （in which Al is four-coordinate）. The results are in agreement with experiments. （1） Electronic structures in Ⅱ and Ⅲ. The results indicated that （i） the molecular orbitals which have large contribution to hydrogen bridge Ti（u-Hb）2Al in
文摘A new year is coming.新年到,万象更新,让我们了解new多一点。和好久不见的朋友如何“破冰”?无论是打电话还是发信息,都可以大大方方地说:"What's new?"new和字母s“联手”,就是"新闻"。Listening to the news every day is a good habit.
文摘In the therapeutic measure of humandiseases depicted by medicine in future,va-rious sorts of anesthetic treatment are be-coming more significant.The miraculousspinal pinching therapy in traditionalChinese medicine,like the suggestiontherapy in Western medicine,has a ratheroptimistic prospect.
文摘英语中一部分单词加上前缀in-或un-,可表示“不”、“无”、“非”等否定含义。它们与其同形的词根在意义上通常构成反义,如:correct/incorrect(正确的/不正确的);close/unclose(关、闭/打开)等。但是,有些由前缀in-或un-构成的派生词却并无否定意义。它们与原词根貌似反义,实则同义或近义,使用时切勿望文生义。如: 1.habit vt.居住在 inhabit vt.居住于 1)They had habited different parts of the globe. 他们曾在世界各地住过。
文摘China has made no secret of its ambitions to develop a large airplane.But the doubt is whether the homegrown aircraft manufacturer will be able to overcome Boeing and Airbus
文摘Source:MIT Technology ntroduction Not all breakthroughs are created equal.Some arrive more or less as usable things;others mainly set the stage for innovations that emerge later,and we have to estimate when that will be.But we’d bet that every one of the milestones on this list will be worth following in the coming years.1.Magic
