在二语习得蓬勃发展的背景下,语言学习已超越传统的形态句法层面,更加关注特定语境中语言的整体意义。随着语料库语言学的发展,研究者开始利用大规模语料库探究词汇的深层使用特征与语义表现。本研究基于美国当代英语语料库(COCA),对动...在二语习得蓬勃发展的背景下,语言学习已超越传统的形态句法层面,更加关注特定语境中语言的整体意义。随着语料库语言学的发展,研究者开始利用大规模语料库探究词汇的深层使用特征与语义表现。本研究基于美国当代英语语料库(COCA),对动词“create”的扩展意义单位展开深入分析,重点考察其在不同语境中的搭配模式及语义韵特征,包括与形容词、副词、名词、介词的共现关系及其对语义倾向的影响。研究发现,虽然“create”通常被视为积极词汇,表示创造、发明或产生新事物,常与创新、想象力和生产力相关联,但在特定搭配中也可能呈现消极语义韵。例如当表达“制造问题”(creates a problem)或“引发混乱”(creates confusion)时,该动词往往带有负面含义。本研究不仅揭示了“create”在实际语用中的动态语义特征及语境依赖性,还为英语学习者提供了更为精细全面的词汇学习策略,即建议学习者在掌握词汇基本意义的同时,应关注其扩展意义单位,从而更准确地理解和使用目标词汇。展开更多
As a Chinese proverb declares,"The beginningof wisdom is to call things by their right names."For an entrepreneur,the beginning of his success isto call his brand by a right name.A brand needs agood name as ...As a Chinese proverb declares,"The beginningof wisdom is to call things by their right names."For an entrepreneur,the beginning of his success isto call his brand by a right name.A brand needs agood name as much as the mankind does.A展开更多
For decades,meals for astronauts during their trips off planet have mostly consisted of prepackaged dehydrated or freeze-dried food,occasionally garnished with terrarium-grown lettuce(Fig.1)[1,2].With longer-term miss...For decades,meals for astronauts during their trips off planet have mostly consisted of prepackaged dehydrated or freeze-dried food,occasionally garnished with terrarium-grown lettuce(Fig.1)[1,2].With longer-term missions to extraterrestrial outposts on the near horizon,a US National Aeronautics and Space Agency(NASA)competition now in its final stages aims to meet the nutritional needs of astronauts on deep space voyages.An added benefit could be innovations in low-resource food production that could help feed Earth’s still growing human population.展开更多
Using clustered regularly interspaced short palindromic repeats(CRISPR)-based molecular tools,scientists are engineering-as they are also doing with plants.-animals with advantageous traits,like disease resistance and...Using clustered regularly interspaced short palindromic repeats(CRISPR)-based molecular tools,scientists are engineering-as they are also doing with plants.-animals with advantageous traits,like disease resistance and improved food yield.While these innovative techniques could one day be applied in humans,technical hurdles and ethical concerns likely place this possibility far in the future,The enhancements rely on germline gene editing,which alters the genes in a way that passes the changes on to offspring.Ger m-line gene editing differs from the somatic cell gene editing used in the highly promising new treatment recently approved for the human disease sickle cell anemia.展开更多
Big investments and partnership announcements made 2021 a landmark year for the nascent electric vertical take-off and landing(e VTOL) aircraft industry. Indeed, several e VTOL developers have the bold-and many say wi...Big investments and partnership announcements made 2021 a landmark year for the nascent electric vertical take-off and landing(e VTOL) aircraft industry. Indeed, several e VTOL developers have the bold-and many say wildly optimistic-ambition to achieve regulatory certification and commence carrying paying passengers as early as 2024.展开更多
The authors show that the bubbles S^(2) × S^(2) can be created from vacuum fluctuation in the background de Sitter universes of k=0,1,so the space-time foam-like structure might really be constructed from bubbles...The authors show that the bubbles S^(2) × S^(2) can be created from vacuum fluctuation in the background de Sitter universes of k=0,1,so the space-time foam-like structure might really be constructed from bubbles of S2 x S2 in the very early inflating phase of our universe.Still,whether such foam-like structure persisted during the later evolution of the universe is a problem unsolved at present.展开更多
Three World Journals Created,two in Hongkong and other in Singapore.They are all bi-monthly e-periodicals in English,open-access(OA),peer-reviewed academic world journal series,created according to the PubMed Central ...Three World Journals Created,two in Hongkong and other in Singapore.They are all bi-monthly e-periodicals in English,open-access(OA),peer-reviewed academic world journal series,created according to the PubMed Central and SCI standards,supported by the editorial board of global experts in their research all over the world.展开更多
Qaidam Basin in Qinghai Province has rich multiple complex resources with salt lakes as the core.These resources form a special condition for the development of green economy,having rare and particular nature.The
It was well-known that non-manifold assembly was a key point for the finite element analysis between two contacted parts.It was important that the elements of the two parts along the interface had same nodes.Mimics,wh...It was well-known that non-manifold assembly was a key point for the finite element analysis between two contacted parts.It was important that the elements of the two parts along the interface had same nodes.Mimics,which was written by Materialise,can import 2D stacked展开更多
TRASH separation has become the talk of the town in China these days as the government unveils a list of 46 “pilot cities” which have been selected to build up a garbage sorting and processing system by 2020. Mandat...TRASH separation has become the talk of the town in China these days as the government unveils a list of 46 “pilot cities” which have been selected to build up a garbage sorting and processing system by 2020. Mandatory schemes on household garbage sorting have already emerged in metropolises like Shanghai in order to improve its recycling rates.展开更多
This paper presents an innovative switched-mode auto gain control （AGC） circuit with internally created reset module for DC-10Mb/s burst-mode unbalanced （BMU） optical data transmission. Conventional AGC circuit is...This paper presents an innovative switched-mode auto gain control （AGC） circuit with internally created reset module for DC-10Mb/s burst-mode unbalanced （BMU） optical data transmission. Conventional AGC circuit is inappropriate for BMU data transmission because it is based on average level detection and requires considerable time to settle on a predefined gain. Therefore, we adopt a fast switched-mode AGC based on peak level detection. After the gain is adjusted, the peak level detectors need to re-detect the peak level of the input signal. Thus, we develop an internally created reset module. This AGC with reset module exhibits a fast operation and achieves an adjusted stable gain within one-bit, avoiding any bit loss up to 10Mb/s data rate. During power-up, the peak level detectors possibly hold an uncertain level resulting in the bit-errors. We propose a power-up reset circuit to solve this problem. Designed in a 0.5μm CMOS technology, the circuit achieves an optical sensitivity of better than -30dBm and a wide dynamic range of over 30dB with a power dissipation of only 30 mW from a 5V supply.展开更多
Editor’s notes: In 2002 key popularized plan of China national sci-tech fruits, four belong to Qingdao city including Hisenses three fruits, astonishing all personnel inside and outside the trade. The three fruits ar...Editor’s notes: In 2002 key popularized plan of China national sci-tech fruits, four belong to Qingdao city including Hisenses three fruits, astonishing all personnel inside and outside the trade. The three fruits are KFR- (25G + 45L) W/BP frequency conversion 1 +2 airconditioner, commercial decision support system. Hisenses commercial guidance medium-to-small commercial management system. As a traditional household electrical appliances enterprise of 3C targets (household electrical appliances, telecommunications展开更多
On October 18,the High-level Forum on Connectivity,as one of the three high-level forums of the Third Belt and Road Forum for International Cooperation,opened.This forum aims at rallying the consensus of all parties,f...On October 18,the High-level Forum on Connectivity,as one of the three high-level forums of the Third Belt and Road Forum for International Cooperation,opened.This forum aims at rallying the consensus of all parties,forming a joint development force,and promoting the high-quality development of the Belt and Road cooperation.vips from at home and abroad spoke and exchanged views on topics such as“the‘physical connectivity’of deepening infrastructure and the‘institutional connectivity’of technology,standards。展开更多
During the epidemic,the demand for COVID-19 prevention supplies surged.The demand for items such as gauze masks,alcohol for disinfection,disinfectants,and antiviral medicines resulted in rapid growth in the number of ...During the epidemic,the demand for COVID-19 prevention supplies surged.The demand for items such as gauze masks,alcohol for disinfection,disinfectants,and antiviral medicines resulted in rapid growth in the number of platform users and orders.The average volume of orders received by DingDang Medicine Express per day was eight times that of the same period last year.At its peak,user traffic reached 50 times that which would occur on a normal day.In one week,DingDang Medicine Express sold 2 million gauze masks,and nearly 1 million bottles of disinfectant.Until now,DingDang Medicine Express has also provided 9 million health services visits.展开更多
The impact of the Belt and Road has continued to spread.Especially in the post-pandemic era,China and countries in Europe,Asia and Africa have restored their production capacities to build new engines for economic gro...The impact of the Belt and Road has continued to spread.Especially in the post-pandemic era,China and countries in Europe,Asia and Africa have restored their production capacities to build new engines for economic growth.This will inject new momentum into the economic growth of countries along the Belt and Road region.展开更多
Macao was handed back to China 20 years ago.Today,Macao is the most developed it has been throughout its history,a live testimony to the success of the“one country,two system”development model.Macao has created a so...Macao was handed back to China 20 years ago.Today,Macao is the most developed it has been throughout its history,a live testimony to the success of the“one country,two system”development model.Macao has created a sound legal system that is based on the constitution and Basic Law of Macao.With the opportunities of joining the Belt and Road Initiative and the Guangdong-Hong Kong-Macao Great Bay Area,Macao’s economy has achieved leapfrog development,local people’s lives have improved,various cultures intermingled and great achievements have been made.展开更多
文摘在二语习得蓬勃发展的背景下,语言学习已超越传统的形态句法层面,更加关注特定语境中语言的整体意义。随着语料库语言学的发展,研究者开始利用大规模语料库探究词汇的深层使用特征与语义表现。本研究基于美国当代英语语料库(COCA),对动词“create”的扩展意义单位展开深入分析,重点考察其在不同语境中的搭配模式及语义韵特征,包括与形容词、副词、名词、介词的共现关系及其对语义倾向的影响。研究发现,虽然“create”通常被视为积极词汇,表示创造、发明或产生新事物,常与创新、想象力和生产力相关联,但在特定搭配中也可能呈现消极语义韵。例如当表达“制造问题”(creates a problem)或“引发混乱”(creates confusion)时,该动词往往带有负面含义。本研究不仅揭示了“create”在实际语用中的动态语义特征及语境依赖性,还为英语学习者提供了更为精细全面的词汇学习策略,即建议学习者在掌握词汇基本意义的同时,应关注其扩展意义单位,从而更准确地理解和使用目标词汇。
文摘As a Chinese proverb declares,"The beginningof wisdom is to call things by their right names."For an entrepreneur,the beginning of his success isto call his brand by a right name.A brand needs agood name as much as the mankind does.A
文摘For decades,meals for astronauts during their trips off planet have mostly consisted of prepackaged dehydrated or freeze-dried food,occasionally garnished with terrarium-grown lettuce(Fig.1)[1,2].With longer-term missions to extraterrestrial outposts on the near horizon,a US National Aeronautics and Space Agency(NASA)competition now in its final stages aims to meet the nutritional needs of astronauts on deep space voyages.An added benefit could be innovations in low-resource food production that could help feed Earth’s still growing human population.
文摘Using clustered regularly interspaced short palindromic repeats(CRISPR)-based molecular tools,scientists are engineering-as they are also doing with plants.-animals with advantageous traits,like disease resistance and improved food yield.While these innovative techniques could one day be applied in humans,technical hurdles and ethical concerns likely place this possibility far in the future,The enhancements rely on germline gene editing,which alters the genes in a way that passes the changes on to offspring.Ger m-line gene editing differs from the somatic cell gene editing used in the highly promising new treatment recently approved for the human disease sickle cell anemia.
文摘Big investments and partnership announcements made 2021 a landmark year for the nascent electric vertical take-off and landing(e VTOL) aircraft industry. Indeed, several e VTOL developers have the bold-and many say wildly optimistic-ambition to achieve regulatory certification and commence carrying paying passengers as early as 2024.
基金Supported by the National Natural Science Foundation of China under Grant No.19473005the Education Commit tee of Hu’nan Province.
文摘The authors show that the bubbles S^(2) × S^(2) can be created from vacuum fluctuation in the background de Sitter universes of k=0,1,so the space-time foam-like structure might really be constructed from bubbles of S2 x S2 in the very early inflating phase of our universe.Still,whether such foam-like structure persisted during the later evolution of the universe is a problem unsolved at present.
文摘Three World Journals Created,two in Hongkong and other in Singapore.They are all bi-monthly e-periodicals in English,open-access(OA),peer-reviewed academic world journal series,created according to the PubMed Central and SCI standards,supported by the editorial board of global experts in their research all over the world.
文摘Qaidam Basin in Qinghai Province has rich multiple complex resources with salt lakes as the core.These resources form a special condition for the development of green economy,having rare and particular nature.The
文摘It was well-known that non-manifold assembly was a key point for the finite element analysis between two contacted parts.It was important that the elements of the two parts along the interface had same nodes.Mimics,which was written by Materialise,can import 2D stacked
文摘TRASH separation has become the talk of the town in China these days as the government unveils a list of 46 “pilot cities” which have been selected to build up a garbage sorting and processing system by 2020. Mandatory schemes on household garbage sorting have already emerged in metropolises like Shanghai in order to improve its recycling rates.
基金Supported by the Natural Science Foundation of Jiangsu Province （ BK2010411 ） and the National International Cooperation Project of China-Korea （2011DFA11310）.
文摘This paper presents an innovative switched-mode auto gain control （AGC） circuit with internally created reset module for DC-10Mb/s burst-mode unbalanced （BMU） optical data transmission. Conventional AGC circuit is inappropriate for BMU data transmission because it is based on average level detection and requires considerable time to settle on a predefined gain. Therefore, we adopt a fast switched-mode AGC based on peak level detection. After the gain is adjusted, the peak level detectors need to re-detect the peak level of the input signal. Thus, we develop an internally created reset module. This AGC with reset module exhibits a fast operation and achieves an adjusted stable gain within one-bit, avoiding any bit loss up to 10Mb/s data rate. During power-up, the peak level detectors possibly hold an uncertain level resulting in the bit-errors. We propose a power-up reset circuit to solve this problem. Designed in a 0.5μm CMOS technology, the circuit achieves an optical sensitivity of better than -30dBm and a wide dynamic range of over 30dB with a power dissipation of only 30 mW from a 5V supply.
文摘Editor’s notes: In 2002 key popularized plan of China national sci-tech fruits, four belong to Qingdao city including Hisenses three fruits, astonishing all personnel inside and outside the trade. The three fruits are KFR- (25G + 45L) W/BP frequency conversion 1 +2 airconditioner, commercial decision support system. Hisenses commercial guidance medium-to-small commercial management system. As a traditional household electrical appliances enterprise of 3C targets (household electrical appliances, telecommunications
文摘On October 18,the High-level Forum on Connectivity,as one of the three high-level forums of the Third Belt and Road Forum for International Cooperation,opened.This forum aims at rallying the consensus of all parties,forming a joint development force,and promoting the high-quality development of the Belt and Road cooperation.vips from at home and abroad spoke and exchanged views on topics such as“the‘physical connectivity’of deepening infrastructure and the‘institutional connectivity’of technology,standards。
文摘During the epidemic,the demand for COVID-19 prevention supplies surged.The demand for items such as gauze masks,alcohol for disinfection,disinfectants,and antiviral medicines resulted in rapid growth in the number of platform users and orders.The average volume of orders received by DingDang Medicine Express per day was eight times that of the same period last year.At its peak,user traffic reached 50 times that which would occur on a normal day.In one week,DingDang Medicine Express sold 2 million gauze masks,and nearly 1 million bottles of disinfectant.Until now,DingDang Medicine Express has also provided 9 million health services visits.
文摘The impact of the Belt and Road has continued to spread.Especially in the post-pandemic era,China and countries in Europe,Asia and Africa have restored their production capacities to build new engines for economic growth.This will inject new momentum into the economic growth of countries along the Belt and Road region.
文摘Macao was handed back to China 20 years ago.Today,Macao is the most developed it has been throughout its history,a live testimony to the success of the“one country,two system”development model.Macao has created a sound legal system that is based on the constitution and Basic Law of Macao.With the opportunities of joining the Belt and Road Initiative and the Guangdong-Hong Kong-Macao Great Bay Area,Macao’s economy has achieved leapfrog development,local people’s lives have improved,various cultures intermingled and great achievements have been made.
