For n≥3,we construct a class{Wn,π1,π2}of n^(2)×n^(2) hermitian matrices by the permutation pairs and show that,for a pair{π1,π2}of permutations on(1,2,…,n),Wn,π1,π2 is an entanglement witness of the n⊗n s...For n≥3,we construct a class{Wn,π1,π2}of n^(2)×n^(2) hermitian matrices by the permutation pairs and show that,for a pair{π1,π2}of permutations on(1,2,…,n),Wn,π1,π2 is an entanglement witness of the n⊗n system if{π1,π2}has the property(C).Recall that a pair{π1,π2}of permutations of(1,2,…,n)has the property(C)if,for each i,one can obtain a permutation of(1,…,i−1,i+1,…,n)from(π1(1),…,π1(i−1),π1(i+1),…,π1(n))and(π2(1),…,π2(i−1),π2(i+1),…,π2(n)).We further prove that Wn,π1,π2 is not comparable with Wn,π,which is the entanglement witness constructed from a single permutationπ;Wn,π1,π2 is decomposable ifπ1π2=id orπ21=π22=id.For the low dimensional cases n∈{3,4},we give a sufficient and necessary condition onπ1,π2 for Wn,π1,π2 to be an entanglement witness.We also show that,for n∈{3,4},Wn,π1,π2 is decomposable if and only ifπ1π2=id orπ21=π22=id;W3,π1,π2 is optimal if and only if(π1,π2)=(π,π2),whereπ=(2,3,1).As applications,some entanglement criteria for states and some decomposability criteria for positive maps are established.展开更多
China, in 2005, had gone through a year of trade disputes with some major trade partners such as the United States of America, the European,etc..But what was the impact of the disputes on China's trade relatio... China, in 2005, had gone through a year of trade disputes with some major trade partners such as the United States of America, the European,etc..But what was the impact of the disputes on China's trade relations with them? The documents of the China Ministry of Commerce show that all the relations had witnessed a optimistic development, with active fruits ahieved as well.……展开更多
On the occasion of the 20th anniversary of the founding of Gofront Dyeing&Finishing Machinery Manufacturer Ltd.,the Documentary"Originality Made"made by CCTV-9 Discovery channel,during which Gofront Dyei...On the occasion of the 20th anniversary of the founding of Gofront Dyeing&Finishing Machinery Manufacturer Ltd.,the Documentary"Originality Made"made by CCTV-9 Discovery channel,during which Gofront Dyeing&Finishing was selected as the first dyeing and finishing equipment manufacturing enterprise in China,presented its premiere in Guangzhou,on November 24th,2017.展开更多
According to Roland Berger Strat-egy Consultants 2014 outlook on China’s healthcare services industry released on January 10th,2014,Ro-land Berger believes that Chinese healthcare market and industry will see structu...According to Roland Berger Strat-egy Consultants 2014 outlook on China’s healthcare services industry released on January 10th,2014,Ro-land Berger believes that Chinese healthcare market and industry will see structural shifts and dynamic changes over the next decade,with 2014 marking an important start to this process.This year is likely to witness展开更多
Wireless Power Transfer(WPT)technology can provide real-time power for many terminal devices in Internet of Things(IoT)through millimeterWave(mmWave)to support applications with large capacity and low latency.Although...Wireless Power Transfer(WPT)technology can provide real-time power for many terminal devices in Internet of Things(IoT)through millimeterWave(mmWave)to support applications with large capacity and low latency.Although the intelligent reflecting surface(IRS)can be adopted to create effective virtual links to address the mmWave blockage problem,the conventional solutions only adopt IRS in the downlink from the Base Station(BS)to the users to enhance the received signal strength.In practice,the reflection of IRS is also applicable to the uplink to improve the spectral efficiency.It is a challenging to jointly optimize IRS beamforming and system resource allocation for wireless energy acquisition and information transmission.In this paper,we first design a Low-Energy Adaptive Clustering Hierarchy(LEACH)clustering protocol for clustering and data collection.Then,the problem of maximizing the minimum system spectral efficiency is constructed by jointly optimizing the transmit power of sensor devices,the uplink and downlink transmission times,the active beamforming at the BS,and the IRS dynamic beamforming.To solve this non-convex optimization problem,we propose an alternating optimization(AO)-based joint solution algorithm.Simulation results show that the use of IRS dynamic beamforming can significantly improve the spectral efficiency of the system,and ensure the reliability of equipment communication and the sustainability of energy supply under NLOS link.展开更多
The present study,based on Labov's narrative theory,focuses on how witnesses,involvement affects their narrative reconstruction of the criminal case.Witnesses5 involvement is first subcategorized,and there are two...The present study,based on Labov's narrative theory,focuses on how witnesses,involvement affects their narrative reconstruction of the criminal case.Witnesses5 involvement is first subcategorized,and there are two circumstances concerning their involvements,one being single suspect versus victim(s)crime and the other multiple suspects versus victim(s)crime.The present study takes four witness statements from a single suspect malicious injury case as data to further analyze the effects exerted by different witness involvements on witness statements and their corresponding representations.Results of the analysis indicate that how witnesses are involved in the criminal event exert different effects on witness statements in three aspects as follows:narrative structure,participant distribution,and language strategies.The results of this study further revealed that the more legal responsibility a witness is likely to take for the criminal event,the more transformations he would make in his narrative reconstruction of the crime.展开更多
Production Recovery China’s apparel industry saw a sharp increase in the output for the January-September period, according to data collected from statistics-worthy
In Lianyungang,a city on the eastern coast of China,is a hill known as Kongwang,which translates as'Confucius Contemplates,'a name it received after the great philosopher Confucius(Kong Zi in Chinese)
A quantum entangled state is easily disturbed by noise and degenerates into a separable state.Compared to the entanglement with bipartite quantum systems,less progress has been made for the entanglement with multipart...A quantum entangled state is easily disturbed by noise and degenerates into a separable state.Compared to the entanglement with bipartite quantum systems,less progress has been made for the entanglement with multipartite quantum systems.For tripartite separability of a four-qubit system,we propose two entanglement witnesses,each of which corresponds to a necessary condition of tripartite separability.For the four-qubit GHZ state mixed with a W state and white noise,we prove that the necessary conditions of tripartite separability are also sufficient at W states side.展开更多
The recent years have witnessed the exit of many foreign cosmetic brands from the Chinese market,such as Revlon and e.l.f.Since 2021,about 20 foreign cosmetic brands have withdrawn from the Chinese market,where they c...The recent years have witnessed the exit of many foreign cosmetic brands from the Chinese market,such as Revlon and e.l.f.Since 2021,about 20 foreign cosmetic brands have withdrawn from the Chinese market,where they cannot escape the doom of failure.展开更多
According to the recently issued 2022 China Game Industry Report,the actual sales revenue of China’s game market in 2022 reached RMB 265.884billion,down by 10.33% year on year.The number of game users was 664 million...According to the recently issued 2022 China Game Industry Report,the actual sales revenue of China’s game market in 2022 reached RMB 265.884billion,down by 10.33% year on year.The number of game users was 664 million,down by 0.33% year on year.After the evident slowdown of market growth in2021,the year 2022 witnessed the first decline in the past eight years,and the game industry has entered the phase of focusing on stock market.As the blue ocean of the market shrinks and the market competition becomes increasingly fierce,the significance of "going overseas" will be more and more important for the game industry.展开更多
1 Art Market Issue 9,2023,China inthe Archives,The rise and fall of classical books have witnessed the hard course of civilization inheritance.As a national cultural palace in the new era,the China National Archives o...1 Art Market Issue 9,2023,China inthe Archives,The rise and fall of classical books have witnessed the hard course of civilization inheritance.As a national cultural palace in the new era,the China National Archives of Publications and Culture not only collects versions in the form of objects and paper.展开更多
China’s national gallery has witnessed and contributed to the development of Chinese culture and fine arts since its opening,and served as an active advocate for exchanges among civilizations.
The first China-Arab States Summit ushered in a new era for the relationship between China and the Arab world.CHINA and the Arab world,though geographically far apart,have enjoyed friendship that goes back millennia.T...The first China-Arab States Summit ushered in a new era for the relationship between China and the Arab world.CHINA and the Arab world,though geographically far apart,have enjoyed friendship that goes back millennia.The Silk Road and the maritime Spice Route have witnessed the two ancient civilizations learn from each other and inspire each other,jointly promoting the prosperity of human society.In modern times.展开更多
基金partially supported by National Natural Science Foundation of China(11671294,12071336)。
文摘For n≥3,we construct a class{Wn,π1,π2}of n^(2)×n^(2) hermitian matrices by the permutation pairs and show that,for a pair{π1,π2}of permutations on(1,2,…,n),Wn,π1,π2 is an entanglement witness of the n⊗n system if{π1,π2}has the property(C).Recall that a pair{π1,π2}of permutations of(1,2,…,n)has the property(C)if,for each i,one can obtain a permutation of(1,…,i−1,i+1,…,n)from(π1(1),…,π1(i−1),π1(i+1),…,π1(n))and(π2(1),…,π2(i−1),π2(i+1),…,π2(n)).We further prove that Wn,π1,π2 is not comparable with Wn,π,which is the entanglement witness constructed from a single permutationπ;Wn,π1,π2 is decomposable ifπ1π2=id orπ21=π22=id.For the low dimensional cases n∈{3,4},we give a sufficient and necessary condition onπ1,π2 for Wn,π1,π2 to be an entanglement witness.We also show that,for n∈{3,4},Wn,π1,π2 is decomposable if and only ifπ1π2=id orπ21=π22=id;W3,π1,π2 is optimal if and only if(π1,π2)=(π,π2),whereπ=(2,3,1).As applications,some entanglement criteria for states and some decomposability criteria for positive maps are established.
文摘 China, in 2005, had gone through a year of trade disputes with some major trade partners such as the United States of America, the European,etc..But what was the impact of the disputes on China's trade relations with them? The documents of the China Ministry of Commerce show that all the relations had witnessed a optimistic development, with active fruits ahieved as well.……
文摘On the occasion of the 20th anniversary of the founding of Gofront Dyeing&Finishing Machinery Manufacturer Ltd.,the Documentary"Originality Made"made by CCTV-9 Discovery channel,during which Gofront Dyeing&Finishing was selected as the first dyeing and finishing equipment manufacturing enterprise in China,presented its premiere in Guangzhou,on November 24th,2017.
文摘According to Roland Berger Strat-egy Consultants 2014 outlook on China’s healthcare services industry released on January 10th,2014,Ro-land Berger believes that Chinese healthcare market and industry will see structural shifts and dynamic changes over the next decade,with 2014 marking an important start to this process.This year is likely to witness
基金supported by the National Natural Science Foundation of China 62001051.
文摘Wireless Power Transfer(WPT)technology can provide real-time power for many terminal devices in Internet of Things(IoT)through millimeterWave(mmWave)to support applications with large capacity and low latency.Although the intelligent reflecting surface(IRS)can be adopted to create effective virtual links to address the mmWave blockage problem,the conventional solutions only adopt IRS in the downlink from the Base Station(BS)to the users to enhance the received signal strength.In practice,the reflection of IRS is also applicable to the uplink to improve the spectral efficiency.It is a challenging to jointly optimize IRS beamforming and system resource allocation for wireless energy acquisition and information transmission.In this paper,we first design a Low-Energy Adaptive Clustering Hierarchy(LEACH)clustering protocol for clustering and data collection.Then,the problem of maximizing the minimum system spectral efficiency is constructed by jointly optimizing the transmit power of sensor devices,the uplink and downlink transmission times,the active beamforming at the BS,and the IRS dynamic beamforming.To solve this non-convex optimization problem,we propose an alternating optimization(AO)-based joint solution algorithm.Simulation results show that the use of IRS dynamic beamforming can significantly improve the spectral efficiency of the system,and ensure the reliability of equipment communication and the sustainability of energy supply under NLOS link.
基金This paper is supported by"the Opening Project of Key Laboratory ofEvidence Science(China University of Political Science and Law),Project No.2016KFKT09."。
文摘The present study,based on Labov's narrative theory,focuses on how witnesses,involvement affects their narrative reconstruction of the criminal case.Witnesses5 involvement is first subcategorized,and there are two circumstances concerning their involvements,one being single suspect versus victim(s)crime and the other multiple suspects versus victim(s)crime.The present study takes four witness statements from a single suspect malicious injury case as data to further analyze the effects exerted by different witness involvements on witness statements and their corresponding representations.Results of the analysis indicate that how witnesses are involved in the criminal event exert different effects on witness statements in three aspects as follows:narrative structure,participant distribution,and language strategies.The results of this study further revealed that the more legal responsibility a witness is likely to take for the criminal event,the more transformations he would make in his narrative reconstruction of the crime.
文摘Viscose and terylene staple fi ber market is very hot as prices rise this year.The main reason for the positive market activity is that cotton prices
文摘Production Recovery China’s apparel industry saw a sharp increase in the output for the January-September period, according to data collected from statistics-worthy
文摘In Lianyungang,a city on the eastern coast of China,is a hill known as Kongwang,which translates as'Confucius Contemplates,'a name it received after the great philosopher Confucius(Kong Zi in Chinese)
基金Supported by the National Natural Science Foundation of China(Grant No:61871347)。
文摘A quantum entangled state is easily disturbed by noise and degenerates into a separable state.Compared to the entanglement with bipartite quantum systems,less progress has been made for the entanglement with multipartite quantum systems.For tripartite separability of a four-qubit system,we propose two entanglement witnesses,each of which corresponds to a necessary condition of tripartite separability.For the four-qubit GHZ state mixed with a W state and white noise,we prove that the necessary conditions of tripartite separability are also sufficient at W states side.
文摘The recent years have witnessed the exit of many foreign cosmetic brands from the Chinese market,such as Revlon and e.l.f.Since 2021,about 20 foreign cosmetic brands have withdrawn from the Chinese market,where they cannot escape the doom of failure.
文摘According to the recently issued 2022 China Game Industry Report,the actual sales revenue of China’s game market in 2022 reached RMB 265.884billion,down by 10.33% year on year.The number of game users was 664 million,down by 0.33% year on year.After the evident slowdown of market growth in2021,the year 2022 witnessed the first decline in the past eight years,and the game industry has entered the phase of focusing on stock market.As the blue ocean of the market shrinks and the market competition becomes increasingly fierce,the significance of "going overseas" will be more and more important for the game industry.
文摘1 Art Market Issue 9,2023,China inthe Archives,The rise and fall of classical books have witnessed the hard course of civilization inheritance.As a national cultural palace in the new era,the China National Archives of Publications and Culture not only collects versions in the form of objects and paper.
文摘China’s national gallery has witnessed and contributed to the development of Chinese culture and fine arts since its opening,and served as an active advocate for exchanges among civilizations.
文摘The first China-Arab States Summit ushered in a new era for the relationship between China and the Arab world.CHINA and the Arab world,though geographically far apart,have enjoyed friendship that goes back millennia.The Silk Road and the maritime Spice Route have witnessed the two ancient civilizations learn from each other and inspire each other,jointly promoting the prosperity of human society.In modern times.
