The ongoing research on secure and trustworthy issues in next generation Internet technology is still insufficient. China has achieved some progress in the field of the trusted next generation Internet. Under the supp...The ongoing research on secure and trustworthy issues in next generation Internet technology is still insufficient. China has achieved some progress in the field of the trusted next generation Internet. Under the support of the National High Technology Research and Development Program of China (863 Program), Tsinghua University and other units have completed the program named 'Research on Critical Technologies and Demonstration Applications of the Trusted Next Generation Internet', which targets the secure and trustworthy problems existing in the current Internet. With focus on tackling the technical problem of authentic address access in the Internet, a prototype system for trusted Internet infrastructure, security service and typical applications are designed and implemented. It is expected that the trusted next generation Internet will support the trusted computer network, trusted telecom network and trusted broadcast & TV network applications.展开更多
The IPv6-powered Internet will cover not only its data communication market, but also the voice-service-dominant fixed-line and mobile markets. The fresh markets of video communication for recreational/educational pur...The IPv6-powered Internet will cover not only its data communication market, but also the voice-service-dominant fixed-line and mobile markets. The fresh markets of video communication for recreational/educational purposes and information household appliance networking are also on the horizon. In other words, IPv6 means new revenue resources for telecom carriers.展开更多
The paper discusses the characteristics of next generation services, and analyzes its development barriers and cut-in points.Broadband services that NGN offers have to transit from an unknown state to an popular state...The paper discusses the characteristics of next generation services, and analyzes its development barriers and cut-in points.Broadband services that NGN offers have to transit from an unknown state to an popular state to become a scale economy.Personal information and communication services and multimedia entertainment services will be the cut-in points.展开更多
On June 25, 2016, the Long March 7(LM-7) launch vehicle completed its maiden flight successfully. LM-7, as a new generation of medium and basic launch vehicle based on the design concepts of non-toxic and nonpolluting...On June 25, 2016, the Long March 7(LM-7) launch vehicle completed its maiden flight successfully. LM-7, as a new generation of medium and basic launch vehicle based on the design concepts of non-toxic and nonpolluting, was developed for the purpose of launching a cargo spacecraft to the Chinese space station. Based on the experience on launching cargo spacecraft and satellites, LM-7 can be adapted for mainstream satellite launch missions in the future with its characteristics of serialization and continuous optimization. LM-7 is expected to be used to launch manned spacecraft in the future. This paper presents a general review of LM-7 with regard to the general scheme and provides references for the development prospects of a medium launch vehicle series in China.展开更多
The provision mode of the telecommunication service has experienced an evolving process, and showing the developing trend from distributed to centralized, from integrated to separated, and from closed to open. To suit...The provision mode of the telecommunication service has experienced an evolving process, and showing the developing trend from distributed to centralized, from integrated to separated, and from closed to open. To suit this trend, there will be three provision modes as Session Initiation Protocol (SIP) server, Open Service Access (OSA) application server and intelligent network(IN) in Next Generation Network (NGN), provides all kinds of services and applications to the subscribers. With the popularity of broadband access and Internet, the NGN will provide single telecommunication service and act as the important national infrastructure to offer various information services to the subscribers. The service provision mode will be more open, diversified, and individualized.展开更多
Chemical space is vast,and the space of physical properties derived from it even more so.Despite over a century of physical chemistry measurements,we still lack large,well-organised data sets of key physical propertie...Chemical space is vast,and the space of physical properties derived from it even more so.Despite over a century of physical chemistry measurements,we still lack large,well-organised data sets of key physical properties such as the interfacial tension of surfactant solutions.Access to such data sets is essential to developing the next generation of predictive models for physicochemical properties using modern approaches such as artificial intelligence and machine learning(ML).Thus,we require experimental methods which can efficiently provide large,reproducible and informative data sets.In this work,we developed a robotic,automated pendant drop module for the efficient characterisation of the interfacial properties of surfactant-containing solutions.Provided with surfactant stock solutions,the module measures a surface tension isotherm,from which multiple important physical properties can be determined,including the critical micelle concentration and the maximum surface excess concentration.The module handles critical experimental challenges and decisions such as choosing an appropriate drop volume,detecting failed measurements and selecting concentration points to measure.To obtain a maximally informative dataset,the platform leverages an active learning algorithm combining Bayesian inference and mutual information to dynamically design experiments in response to collected data.We validate the platform by characterising a range of surfactants and demonstrate the effectiveness of its capabilities by mapping the surface tension of binary surfactant mixtures.This module lays the foundation for efficiently and autonomously generating informative datasets of the interfacial properties of surfactant formulations,paving the way to the next generation of ML models for the prediction of formulation properties.展开更多
Main challenges of Earth sciences in Africa The UNESCO’s Earth Science Education Initiative in Africa(ESEIA)is probably one of the most important legacies of the International Year of Planet Earth(IYPE).ESEIA was ann...Main challenges of Earth sciences in Africa The UNESCO’s Earth Science Education Initiative in Africa(ESEIA)is probably one of the most important legacies of the International Year of Planet Earth(IYPE).ESEIA was announced by the Director General of UNESCO at the occasion of the Africa Regional Launch of IYPE in Arusha(Tanzania)in 2008.The overall intention of this initiative is to support the development of the next generation of earth scientists in Africa who are equipped with the necessary tools.展开更多
文摘The ongoing research on secure and trustworthy issues in next generation Internet technology is still insufficient. China has achieved some progress in the field of the trusted next generation Internet. Under the support of the National High Technology Research and Development Program of China (863 Program), Tsinghua University and other units have completed the program named 'Research on Critical Technologies and Demonstration Applications of the Trusted Next Generation Internet', which targets the secure and trustworthy problems existing in the current Internet. With focus on tackling the technical problem of authentic address access in the Internet, a prototype system for trusted Internet infrastructure, security service and typical applications are designed and implemented. It is expected that the trusted next generation Internet will support the trusted computer network, trusted telecom network and trusted broadcast & TV network applications.
文摘The IPv6-powered Internet will cover not only its data communication market, but also the voice-service-dominant fixed-line and mobile markets. The fresh markets of video communication for recreational/educational purposes and information household appliance networking are also on the horizon. In other words, IPv6 means new revenue resources for telecom carriers.
文摘The paper discusses the characteristics of next generation services, and analyzes its development barriers and cut-in points.Broadband services that NGN offers have to transit from an unknown state to an popular state to become a scale economy.Personal information and communication services and multimedia entertainment services will be the cut-in points.
文摘On June 25, 2016, the Long March 7(LM-7) launch vehicle completed its maiden flight successfully. LM-7, as a new generation of medium and basic launch vehicle based on the design concepts of non-toxic and nonpolluting, was developed for the purpose of launching a cargo spacecraft to the Chinese space station. Based on the experience on launching cargo spacecraft and satellites, LM-7 can be adapted for mainstream satellite launch missions in the future with its characteristics of serialization and continuous optimization. LM-7 is expected to be used to launch manned spacecraft in the future. This paper presents a general review of LM-7 with regard to the general scheme and provides references for the development prospects of a medium launch vehicle series in China.
文摘The provision mode of the telecommunication service has experienced an evolving process, and showing the developing trend from distributed to centralized, from integrated to separated, and from closed to open. To suit this trend, there will be three provision modes as Session Initiation Protocol (SIP) server, Open Service Access (OSA) application server and intelligent network(IN) in Next Generation Network (NGN), provides all kinds of services and applications to the subscribers. With the popularity of broadband access and Internet, the NGN will provide single telecommunication service and act as the important national infrastructure to offer various information services to the subscribers. The service provision mode will be more open, diversified, and individualized.
基金funding from the National Growth Fund project“Big Chemistry”(1420578)funded by the Ministry of Education,Culture and ScienceThis project was also supported by the European Union and the Swiss State Secretariat for Education,Research and Innovation(SERI)under contract numbers 22.00017 and 22.00034(Horizon Europe Research and Innovation Project CORENET).
文摘Chemical space is vast,and the space of physical properties derived from it even more so.Despite over a century of physical chemistry measurements,we still lack large,well-organised data sets of key physical properties such as the interfacial tension of surfactant solutions.Access to such data sets is essential to developing the next generation of predictive models for physicochemical properties using modern approaches such as artificial intelligence and machine learning(ML).Thus,we require experimental methods which can efficiently provide large,reproducible and informative data sets.In this work,we developed a robotic,automated pendant drop module for the efficient characterisation of the interfacial properties of surfactant-containing solutions.Provided with surfactant stock solutions,the module measures a surface tension isotherm,from which multiple important physical properties can be determined,including the critical micelle concentration and the maximum surface excess concentration.The module handles critical experimental challenges and decisions such as choosing an appropriate drop volume,detecting failed measurements and selecting concentration points to measure.To obtain a maximally informative dataset,the platform leverages an active learning algorithm combining Bayesian inference and mutual information to dynamically design experiments in response to collected data.We validate the platform by characterising a range of surfactants and demonstrate the effectiveness of its capabilities by mapping the surface tension of binary surfactant mixtures.This module lays the foundation for efficiently and autonomously generating informative datasets of the interfacial properties of surfactant formulations,paving the way to the next generation of ML models for the prediction of formulation properties.
文摘Main challenges of Earth sciences in Africa The UNESCO’s Earth Science Education Initiative in Africa(ESEIA)is probably one of the most important legacies of the International Year of Planet Earth(IYPE).ESEIA was announced by the Director General of UNESCO at the occasion of the Africa Regional Launch of IYPE in Arusha(Tanzania)in 2008.The overall intention of this initiative is to support the development of the next generation of earth scientists in Africa who are equipped with the necessary tools.
