Amid the current evolving global political and economic landscape, the digital economy has achieved a positive momentum in BRICS countries. Emerging technologies ranging from big data, cloud computing, and the Interne...Amid the current evolving global political and economic landscape, the digital economy has achieved a positive momentum in BRICS countries. Emerging technologies ranging from big data, cloud computing, and the Internet of Things to artificial intelligence(AI) have maintained a dynamic development. New phenomena such as “new retail” and “new manufacturing” are persistently changing people's daily lives and gradually influencing human values and notions in social governance. BRICS countries have accelerated the innovation and development of the digital economy by constantly improving relevant cooperation mechanisms. “Digital BRICS” has already become an important force to promote world economic growth and enhance the reform of the global economic governance system. The development of the digital economy per se has unique characteristics. Thus, BRICS countries are faced with practical challenges in deepening cooperation. Particularly, they must reconsider the national security risks created by the transnational diffusion of technologies and the implications for the international order stemming from the excessive expansion of the power of digital giants. BRICS countries can continue to bridge differences and divergences among each other by strengthening functional cooperation in joint efforts to create greater room for shared digital benefits and open up a new future for the digital economy characterized by harmony, cooperation, and coexistence.展开更多
This paper focus on the function of cooperative learning in developing positive affect,Including reducing anxiety,increasing motivation,facilitating the development of positive attitudes toward learning and language l...This paper focus on the function of cooperative learning in developing positive affect,Including reducing anxiety,increasing motivation,facilitating the development of positive attitudes toward learning and language learning,promoting self-esteem,as well as supporting different learning styles and encouraging perseverance in the difficult and confusing process of learning a foreign language.展开更多
Sharing the hardware platform between diverse information systems to establish full cooperation among different functionalities has attracted substantial attention.However,broadband multifunctional integrated systems ...Sharing the hardware platform between diverse information systems to establish full cooperation among different functionalities has attracted substantial attention.However,broadband multifunctional integrated systems with large operating frequency ranges are challenging due to the bandwidth and computing speed restrictions of electronic circuitry.Here,we report an analog parallel processor(APP)based on the silicon photonic platform that directly discretizes and parallelizes the broadband signal in the analog domain.The APP first discretizes the signal with the optical frequency comb and then adopts optical dynamic phase interference to reassign the analog signal into 2N parallel sequences.Via photonic analog parallelism,data rate and data volume in each sequence are simultaneously compressed,which mitigates the requirement on each parallel computing core.Moreover,the fusion of the outputs from each computing core is equivalent to directly processing broadband signals.In the proof-of-concept experiment,two-channel analog parallel processing of broadband radar signals and high-speed communication signals is implemented on the single photonic integrated circuit.The bandwidth of broadband radar signal is 6 GHz and the range resolution of 2.69 cm is achieved.The wireless communication rate of 8 Gbit/s is also validated.Breaking the bandwidth and speed limitations of the single-computing core along with further exploring the multichannel potential of this architecture,we anticipate that the proposed APP will accelerate the development of powerful optoelectronic processors as critical support for applications such as satellite networks and intelligent driving.展开更多
The Shanghai Cooperation Organization (SOC), made up of six member countries, is reinventing itself and banding together to deal with the region's security and economic development. Operating under the "Shang...The Shanghai Cooperation Organization (SOC), made up of six member countries, is reinventing itself and banding together to deal with the region's security and economic development. Operating under the "Shanghai Spirit"-the essence of state-to-state relations where trust and equality are key to members looking out for each other-questions need to be asked and answered at the organization's fifth anniversary. Despite the best intentions, a clear road map is needed to clarify the SCO's future.展开更多
基金a special project supported by the National Social Science Fund of China for strategic research on the Belt and Road Initiative (BRI) titled “Report on Countries along the Belt and Road” (Grant No. 17VDL002)。
文摘Amid the current evolving global political and economic landscape, the digital economy has achieved a positive momentum in BRICS countries. Emerging technologies ranging from big data, cloud computing, and the Internet of Things to artificial intelligence(AI) have maintained a dynamic development. New phenomena such as “new retail” and “new manufacturing” are persistently changing people's daily lives and gradually influencing human values and notions in social governance. BRICS countries have accelerated the innovation and development of the digital economy by constantly improving relevant cooperation mechanisms. “Digital BRICS” has already become an important force to promote world economic growth and enhance the reform of the global economic governance system. The development of the digital economy per se has unique characteristics. Thus, BRICS countries are faced with practical challenges in deepening cooperation. Particularly, they must reconsider the national security risks created by the transnational diffusion of technologies and the implications for the international order stemming from the excessive expansion of the power of digital giants. BRICS countries can continue to bridge differences and divergences among each other by strengthening functional cooperation in joint efforts to create greater room for shared digital benefits and open up a new future for the digital economy characterized by harmony, cooperation, and coexistence.
文摘This paper focus on the function of cooperative learning in developing positive affect,Including reducing anxiety,increasing motivation,facilitating the development of positive attitudes toward learning and language learning,promoting self-esteem,as well as supporting different learning styles and encouraging perseverance in the difficult and confusing process of learning a foreign language.
基金supported in part by the National Natural Science Foundation of China(T2225023,62205202)the Shanghai Sailing Program(No.22YF1420200)。
文摘Sharing the hardware platform between diverse information systems to establish full cooperation among different functionalities has attracted substantial attention.However,broadband multifunctional integrated systems with large operating frequency ranges are challenging due to the bandwidth and computing speed restrictions of electronic circuitry.Here,we report an analog parallel processor(APP)based on the silicon photonic platform that directly discretizes and parallelizes the broadband signal in the analog domain.The APP first discretizes the signal with the optical frequency comb and then adopts optical dynamic phase interference to reassign the analog signal into 2N parallel sequences.Via photonic analog parallelism,data rate and data volume in each sequence are simultaneously compressed,which mitigates the requirement on each parallel computing core.Moreover,the fusion of the outputs from each computing core is equivalent to directly processing broadband signals.In the proof-of-concept experiment,two-channel analog parallel processing of broadband radar signals and high-speed communication signals is implemented on the single photonic integrated circuit.The bandwidth of broadband radar signal is 6 GHz and the range resolution of 2.69 cm is achieved.The wireless communication rate of 8 Gbit/s is also validated.Breaking the bandwidth and speed limitations of the single-computing core along with further exploring the multichannel potential of this architecture,we anticipate that the proposed APP will accelerate the development of powerful optoelectronic processors as critical support for applications such as satellite networks and intelligent driving.
文摘The Shanghai Cooperation Organization (SOC), made up of six member countries, is reinventing itself and banding together to deal with the region's security and economic development. Operating under the "Shanghai Spirit"-the essence of state-to-state relations where trust and equality are key to members looking out for each other-questions need to be asked and answered at the organization's fifth anniversary. Despite the best intentions, a clear road map is needed to clarify the SCO's future.
