Human coronavirus infection getting into the brain:By February 2022,the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection,causing the coronavirus disease 2019(COVID-19)outbreak,has infected around 4...Human coronavirus infection getting into the brain:By February 2022,the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection,causing the coronavirus disease 2019(COVID-19)outbreak,has infected around 415 million people,and caused~5.8 million deaths worldwide(WHO,https://covid19.who.int/).As SARS-CoV-2 replicates during the infection,it undergoes genetic mutation to generate variants with varying characteristics and mutation frequencies.The emerging,over time,new variants that differ with transmissibility,immunity,and infection severity pose continuous challenges to established COVID-19 management strategies and regulations.Several SARS-CoV-2 variants such as Omicron(B.1.1.529),Delta(B.1.617.2),UK(B.1.17),South Africa(B.1.351),Brazil(P.1),and New York B.1.525-B.1.526 were detected worldwide and accelerated severity of COVID-19 pandemic(Figure 1A;McQuaid et al.,2021).展开更多
The Chinese modernization, though sharing certain elements with other modernization processes in contemporary history, is characterized by features unique to the Chinese context.
Today is Thanksgiving Day in the U.S.People share a big meal with family and friends.The delicious smell of roast turkey fills the house.Corn,potatoes,sweet potatoes and green beans are on the table and ready to eat.T...Today is Thanksgiving Day in the U.S.People share a big meal with family and friends.The delicious smell of roast turkey fills the house.Corn,potatoes,sweet potatoes and green beans are on the table and ready to eat.There is cranberry sauce,too.Later there will be pumpkin pie!展开更多
Catastrophic forgetting describes the fact that machine learning models will likely forget the knowledge of previously learned tasks after the learning process of a new one.It is a vital problem in the continual learn...Catastrophic forgetting describes the fact that machine learning models will likely forget the knowledge of previously learned tasks after the learning process of a new one.It is a vital problem in the continual learning scenario and recently has attracted tremendous concern across different communities.We explore the catastrophic forgetting phenomena in the context of quantum machine learning.It is found that,similar to those classical learning models based on neural networks,quantum learning systems likewise suffer from such forgetting problem in classification tasks emerging from various application scenes.We show that based on the local geometrical information in the loss function landscape of the trained model,a uniform strategy can be adapted to overcome the forgetting problem in the incremental learning setting.Our results uncover the catastrophic forgetting phenomena in quantum machine learning and offer a practical method to overcome this problem,which opens a new avenue for exploring potential quantum advantages towards continual learning.展开更多
Three flora assemblages of Yima formation, in western Henan are systematically studied. The beginning time from which the climate in this region during the middle Jurassic and the late Jurassic period getting hot was ...Three flora assemblages of Yima formation, in western Henan are systematically studied. The beginning time from which the climate in this region during the middle Jurassic and the late Jurassic period getting hot was Bajocian to early Bathonian,obviously earlier than in south Europe, middle Asia,and Siberia.展开更多
Robert,an experienced sky diver(跳伞运动员),was readying him-self for a jump when he spotted(发现)another man outfitted(装备)todive wearing dark glasses,carrying a white cane(手杖)and holding aseeing-eye dog(导盲犬)by...Robert,an experienced sky diver(跳伞运动员),was readying him-self for a jump when he spotted(发现)another man outfitted(装备)todive wearing dark glasses,carrying a white cane(手杖)and holding aseeing-eye dog(导盲犬)by a leash(皮带)。Shocked that the blind展开更多
More than twenty years ago, when I first started working on plasticity and regeneration in the peripheral nervous system, I had the feeling of being part of a little, though lively, scientific community that was rarth...More than twenty years ago, when I first started working on plasticity and regeneration in the peripheral nervous system, I had the feeling of being part of a little, though lively, scientific community that was rarther isolated in the world of neuroscience which appeared to me as almost only focused on central nervous system. Since then, things have progressively changed very much and, today, interest in the regeneration in the peripheral nervous system, and especially in its main component. Le. the peripheral nerves （Geuna S, Raimondo S, Ronchi G, et al. Histology of the peripheral nerve and changes occurring during nerve regeneration. Int Rev Neurobiol. 2009;87：27-46.）, is sprading tremendouslty among both basic and clinical neuroscientists.展开更多
I believe the world can be better. I am also certain that it is getting worse. We can seize our (?) and move beyond the dangers that threatenus, but to be effectives we (?) abandon the naive beliefs controlling us. Ev...I believe the world can be better. I am also certain that it is getting worse. We can seize our (?) and move beyond the dangers that threatenus, but to be effectives we (?) abandon the naive beliefs controlling us. Everytime I hear someone (?). 'The world will change when things get badenough.' I get more disturbed. This common beliet ignores the fact that human beings can adapt to almosteverything. What was once intolerable all too easily becomes the norm There展开更多
The latest book of my poems has not been sellingvery well -- in fact 122 of my personal friends andrelations tell me they’ve bought it, but the publi-shers say only 84 copies have been sold. So thegeneral public seem...The latest book of my poems has not been sellingvery well -- in fact 122 of my personal friends andrelations tell me they’ve bought it, but the publi-shers say only 84 copies have been sold. So thegeneral public seem to have received it rather coldly. 'The trouble is,' said Edith, 'that nobody hasever heard of you; and those who have heard of展开更多
The 19th World Congress of the International Federation of Translators(FIT) was held in San Francisco from August 1-4. Huang Youyi,Vice President of China International Publishing Group,has just completed a term as FI...The 19th World Congress of the International Federation of Translators(FIT) was held in San Francisco from August 1-4. Huang Youyi,Vice President of China International Publishing Group,has just completed a term as FIT vice president.At the conference site on August 1,Huang spoke to ChinAfrica on展开更多
Manas has been the most affluent county in Xinjiang Uygur Autonomous Region, northwest China. The per capita income reached 5,318 yuan (8.27 yuan against US dollar) in 2002. Yet some households in the county are still...Manas has been the most affluent county in Xinjiang Uygur Autonomous Region, northwest China. The per capita income reached 5,318 yuan (8.27 yuan against US dollar) in 2002. Yet some households in the county are still living in poverty. To get them rid of poverty, the county government has launched a poverty alleviation project, which has involved some 160 government institntions, enterprises, schools and other units. An official review on the project last year found that good results had been achieved in poverty alleviation. In 2002 alone, 199 households had been helped to shake off the poverty and move towards a relatively comfortable life.展开更多
his cellphone in the air and spun itaround to find a signal. ＂This is how we get network coverage whenever we want to make phone calls,＂ he told ChinAfrica. Uchena. manager of the Santa Meteo Radio in northwest Cam...his cellphone in the air and spun itaround to find a signal. ＂This is how we get network coverage whenever we want to make phone calls,＂ he told ChinAfrica. Uchena. manager of the Santa Meteo Radio in northwest Cameroon, said only three out of the 10 villages which make up the Santa administrative re- gion have this kind of network availability. The other seven are completely cut off from the telecommuni- cations network.展开更多
EVRARD Ndayikeje is a Burundian agricultural technician. Since November 2015, he works shoulder to shoulder with Chinese experts based in his country on various projects aimed at improving Burundi＇s agricultural sect...EVRARD Ndayikeje is a Burundian agricultural technician. Since November 2015, he works shoulder to shoulder with Chinese experts based in his country on various projects aimed at improving Burundi＇s agricultural sector, including rice cultivation.展开更多
The rapid development of the Internet brings opportunities not only to China, but also to African countries Experts believe that Africa has the considerable potential to develop Internet-related businesses, including ...The rapid development of the Internet brings opportunities not only to China, but also to African countries Experts believe that Africa has the considerable potential to develop Internet-related businesses, including the domain name industry. However, this potential is being negated by barriers such as the lack of communication facilities and infrastructure, low literacy rates and an absence of financing schemes.展开更多
Realizing the importance of English in a global world,Chinese parents are enrolling their kids into specialist English centers in droves,no matter the financial cost by Gui Gui QIU Yu,who was born and raised in Beijin...Realizing the importance of English in a global world,Chinese parents are enrolling their kids into specialist English centers in droves,no matter the financial cost by Gui Gui QIU Yu,who was born and raised in Beijing, does not fully recall what he was do-展开更多
PEOPLE usually link traditional Chinese medicine （TCM） with a Chinese face. But when patients step into the small acupuncture clinic at the Confucius Institute of the Cheikh Anta Diop University of Dakar. Senegal, t...PEOPLE usually link traditional Chinese medicine （TCM） with a Chinese face. But when patients step into the small acupuncture clinic at the Confucius Institute of the Cheikh Anta Diop University of Dakar. Senegal, they find a Senegalese woman sitting in front of them.展开更多
轻动词,也称“弱语义动词”,语义内容含量少,无法独立充当谓语,需要其他实词补充语义内容,共同构成谓语成分。英语中常见的轻动词短语结构是“轻动词+不定冠词+名词(由动词转化派生)”,例如:GIVE A N(V),然而,GIVE同时也是一个语义内容...轻动词,也称“弱语义动词”,语义内容含量少,无法独立充当谓语,需要其他实词补充语义内容,共同构成谓语成分。英语中常见的轻动词短语结构是“轻动词+不定冠词+名词(由动词转化派生)”,例如:GIVE A N(V),然而,GIVE同时也是一个语义内容充足的‘强语义动词’,可构成表“给予事件”的双及物结构。认知语言学认为语言形式与概念结构有仿拟关系,二者同构程度越高,越易存储和提取。这种仿拟可以是语码对经验的直接模仿,也可以是语码对图式化的其他语码的仿拟,本文认为轻动词短语GIVE A N(V)的形成机制就是对实义动词GIVE双及物结构的仿拟。仿拟一个语言结构必然会受到该结构概念的影响,本文认为轻动词短语GIVE A N(V)的认知原理是(GIVE)给予事件模型和N(V)中谓词事件模型整合生成的新事件模型。展开更多
文摘Human coronavirus infection getting into the brain:By February 2022,the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection,causing the coronavirus disease 2019(COVID-19)outbreak,has infected around 415 million people,and caused~5.8 million deaths worldwide(WHO,https://covid19.who.int/).As SARS-CoV-2 replicates during the infection,it undergoes genetic mutation to generate variants with varying characteristics and mutation frequencies.The emerging,over time,new variants that differ with transmissibility,immunity,and infection severity pose continuous challenges to established COVID-19 management strategies and regulations.Several SARS-CoV-2 variants such as Omicron(B.1.1.529),Delta(B.1.617.2),UK(B.1.17),South Africa(B.1.351),Brazil(P.1),and New York B.1.525-B.1.526 were detected worldwide and accelerated severity of COVID-19 pandemic(Figure 1A;McQuaid et al.,2021).
文摘The Chinese modernization, though sharing certain elements with other modernization processes in contemporary history, is characterized by features unique to the Chinese context.
文摘Today is Thanksgiving Day in the U.S.People share a big meal with family and friends.The delicious smell of roast turkey fills the house.Corn,potatoes,sweet potatoes and green beans are on the table and ready to eat.There is cranberry sauce,too.Later there will be pumpkin pie!
基金supported by the Start-Up Fund from Tsinghua University(Grant No.53330300320)the National Natural Science Foundation of China(Grant No.12075128)the Shanghai Qi Zhi Institute。
文摘Catastrophic forgetting describes the fact that machine learning models will likely forget the knowledge of previously learned tasks after the learning process of a new one.It is a vital problem in the continual learning scenario and recently has attracted tremendous concern across different communities.We explore the catastrophic forgetting phenomena in the context of quantum machine learning.It is found that,similar to those classical learning models based on neural networks,quantum learning systems likewise suffer from such forgetting problem in classification tasks emerging from various application scenes.We show that based on the local geometrical information in the loss function landscape of the trained model,a uniform strategy can be adapted to overcome the forgetting problem in the incremental learning setting.Our results uncover the catastrophic forgetting phenomena in quantum machine learning and offer a practical method to overcome this problem,which opens a new avenue for exploring potential quantum advantages towards continual learning.
文摘Three flora assemblages of Yima formation, in western Henan are systematically studied. The beginning time from which the climate in this region during the middle Jurassic and the late Jurassic period getting hot was Bajocian to early Bathonian,obviously earlier than in south Europe, middle Asia,and Siberia.
文摘Robert,an experienced sky diver(跳伞运动员),was readying him-self for a jump when he spotted(发现)another man outfitted(装备)todive wearing dark glasses,carrying a white cane(手杖)and holding aseeing-eye dog(导盲犬)by a leash(皮带)。Shocked that the blind
文摘More than twenty years ago, when I first started working on plasticity and regeneration in the peripheral nervous system, I had the feeling of being part of a little, though lively, scientific community that was rarther isolated in the world of neuroscience which appeared to me as almost only focused on central nervous system. Since then, things have progressively changed very much and, today, interest in the regeneration in the peripheral nervous system, and especially in its main component. Le. the peripheral nerves （Geuna S, Raimondo S, Ronchi G, et al. Histology of the peripheral nerve and changes occurring during nerve regeneration. Int Rev Neurobiol. 2009;87：27-46.）, is sprading tremendouslty among both basic and clinical neuroscientists.
文摘I believe the world can be better. I am also certain that it is getting worse. We can seize our (?) and move beyond the dangers that threatenus, but to be effectives we (?) abandon the naive beliefs controlling us. Everytime I hear someone (?). 'The world will change when things get badenough.' I get more disturbed. This common beliet ignores the fact that human beings can adapt to almosteverything. What was once intolerable all too easily becomes the norm There
文摘The latest book of my poems has not been sellingvery well -- in fact 122 of my personal friends andrelations tell me they’ve bought it, but the publi-shers say only 84 copies have been sold. So thegeneral public seem to have received it rather coldly. 'The trouble is,' said Edith, 'that nobody hasever heard of you; and those who have heard of
文摘The 19th World Congress of the International Federation of Translators(FIT) was held in San Francisco from August 1-4. Huang Youyi,Vice President of China International Publishing Group,has just completed a term as FIT vice president.At the conference site on August 1,Huang spoke to ChinAfrica on
文摘Manas has been the most affluent county in Xinjiang Uygur Autonomous Region, northwest China. The per capita income reached 5,318 yuan (8.27 yuan against US dollar) in 2002. Yet some households in the county are still living in poverty. To get them rid of poverty, the county government has launched a poverty alleviation project, which has involved some 160 government institntions, enterprises, schools and other units. An official review on the project last year found that good results had been achieved in poverty alleviation. In 2002 alone, 199 households had been helped to shake off the poverty and move towards a relatively comfortable life.
文摘his cellphone in the air and spun itaround to find a signal. ＂This is how we get network coverage whenever we want to make phone calls,＂ he told ChinAfrica. Uchena. manager of the Santa Meteo Radio in northwest Cameroon, said only three out of the 10 villages which make up the Santa administrative re- gion have this kind of network availability. The other seven are completely cut off from the telecommuni- cations network.
文摘EVRARD Ndayikeje is a Burundian agricultural technician. Since November 2015, he works shoulder to shoulder with Chinese experts based in his country on various projects aimed at improving Burundi＇s agricultural sector, including rice cultivation.
文摘The rapid development of the Internet brings opportunities not only to China, but also to African countries Experts believe that Africa has the considerable potential to develop Internet-related businesses, including the domain name industry. However, this potential is being negated by barriers such as the lack of communication facilities and infrastructure, low literacy rates and an absence of financing schemes.
文摘Realizing the importance of English in a global world,Chinese parents are enrolling their kids into specialist English centers in droves,no matter the financial cost by Gui Gui QIU Yu,who was born and raised in Beijing, does not fully recall what he was do-
文摘PEOPLE usually link traditional Chinese medicine （TCM） with a Chinese face. But when patients step into the small acupuncture clinic at the Confucius Institute of the Cheikh Anta Diop University of Dakar. Senegal, they find a Senegalese woman sitting in front of them.
文摘轻动词,也称“弱语义动词”,语义内容含量少,无法独立充当谓语,需要其他实词补充语义内容,共同构成谓语成分。英语中常见的轻动词短语结构是“轻动词+不定冠词+名词(由动词转化派生)”,例如:GIVE A N(V),然而,GIVE同时也是一个语义内容充足的‘强语义动词’,可构成表“给予事件”的双及物结构。认知语言学认为语言形式与概念结构有仿拟关系,二者同构程度越高,越易存储和提取。这种仿拟可以是语码对经验的直接模仿,也可以是语码对图式化的其他语码的仿拟,本文认为轻动词短语GIVE A N(V)的形成机制就是对实义动词GIVE双及物结构的仿拟。仿拟一个语言结构必然会受到该结构概念的影响,本文认为轻动词短语GIVE A N(V)的认知原理是(GIVE)给予事件模型和N(V)中谓词事件模型整合生成的新事件模型。
