This Special Topic of the Journal of Semiconductors(JOS)features expanded versions of key articles presented at the 2024 IEEE International Conference on Integrated Circuits Technologies and Applications(ICTA),which w...This Special Topic of the Journal of Semiconductors(JOS)features expanded versions of key articles presented at the 2024 IEEE International Conference on Integrated Circuits Technologies and Applications(ICTA),which was held in Hangzhou,Zhejiang,China,from October 25 to 27,2024.展开更多
The increasing requirements for bandwidth drive the 100G Ethernet into use as quickly as possible.The major technologies supporting 100G Ethernet interface include the physical layer channel convergence technology,mul...The increasing requirements for bandwidth drive the 100G Ethernet into use as quickly as possible.The major technologies supporting 100G Ethernet interface include the physical layer channel convergence technology,multi-fiber channel and Wavelength Division Multiplexing(WDM)technology.The key technology for high-speed optical devices at the interface requires a breakthrough.The demands driven by the increase of interface rate require better packet processing and storage,system switching,and backplane technology.In addition,in the network,the transport problem of the new interface should be solved,including defining transport standards and pushing the development of key transport technologies.As far as the cost and requirements are concerned,the commercial application of 100G Ethernet is viable in Metropolitan Area Networks(MANs).展开更多
Cloud computing technology is changing the development and usage patterns of IT infrastructure and applications. Virtualized and distributed systems as well as unified management and scheduling has greatly im proved c...Cloud computing technology is changing the development and usage patterns of IT infrastructure and applications. Virtualized and distributed systems as well as unified management and scheduling has greatly im proved computing and storage. Management has become easier, andOAM costs have been significantly reduced. Cloud desktop technology is develop ing rapidly. With this technology, users can flexibly and dynamically use virtual ma chine resources, companies＇ efficiency of using and allocating resources is greatly improved, and information security is ensured. In most existing virtual cloud desk top solutions, computing and storage are bound together, and data is stored as im age files. This limits the flexibility and expandability of systems and is insufficient for meetinz customers＇ requirements in different scenarios.展开更多
Purpose–The intelligent Central Traffic Control(CTC)system plays a vital role in establishing an intelligent high-speed railway(HSR)system.As the core of HSR transportation command,the intelligent CTC system is a new...Purpose–The intelligent Central Traffic Control(CTC)system plays a vital role in establishing an intelligent high-speed railway(HSR)system.As the core of HSR transportation command,the intelligent CTC system is a new HSR dispatching command system that integrates the widely used CTC in China with the practical service requirements of intelligent dispatching.This paper aims to propose key technologies and applications for intelligent dispatching command in HSR in China.Design/methodology/approach–This paper first briefly introduces the functions and configuration of the intelligent CTC system.Some new servers,terminals and interfaces are introduced,which are plan adjustment server/terminal,interface for automatic train operation(ATO),interface for Dynamic Monitoring System of Train Control Equipment(DMS),interface for Power Supervisory Control and Data Acquisition(PSCADA),interface for Disaster Monitoring,etc.Findings–The key technologies applied in the intelligent CTC system include automatic adjustment of train operation plans,safety control of train routes and commands,traffic information data platform,integrated simulation of traffic dispatching and ATO function.These technologies have been applied in the Beijing-Zhangjiakou HSR,which commenced operations at the end of 2019.Implementing these key intelligent functions has improved the train dispatching command capacity,ensured the safe operation of intelligent HSR,reduced the labor intensity of dispatching operators and enhanced the intelligence level of China’s dispatching system.Originality/value–This paper provides further challenges and research directions for the intelligent dispatching command of HSR.To achieve the objectives,new measures need to be conducted,including the development of advanced technologies for intelligent dispatching command,coping with new requirements with the development of China’s railway signaling system,the integration of traffic dispatching and train control and the application of AI and data-driven modeling and methods.展开更多
Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applic...Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applications. The Terahertz region has been the focus of research worldwide since early 1990s. Due to their unique characteristics, Terahertz technologies have a wide range of applications, such as hazard detection, high speed data communications, radio astronomy, and biomedical imaging.展开更多
During the past few years, the terahertz （THz） frequency regime has had renewed scientific and technological interest because of recent breakthroughs in the areas of high power sources, sensitive detectors, novel ma...During the past few years, the terahertz （THz） frequency regime has had renewed scientific and technological interest because of recent breakthroughs in the areas of high power sources, sensitive detectors, novel materials, and high resolution video imaging. Because it lies between the radio frequencies and infrared wavelengths, the terahertz electromagnetic region was thought to be promising for practical applications （300 micrometers wavelength corresponds to 1 THz frequency）, but it suffered from very high attenuation through the atmosphere （above 1 dB/meter）, and was found to be difficult to generate, modulate, and detect. On the other hand, many non-polar dielectric materials are transparent to THz waves,展开更多
Among all the metro Ethernet technologies,Virtual Private LAN Service(VPLS),a Layer 2 Virtual Private Network(L2VPN)technology,has drawn wide attention due to its simplicity,reliability,and ease of use.VPLS can implem...Among all the metro Ethernet technologies,Virtual Private LAN Service(VPLS),a Layer 2 Virtual Private Network(L2VPN)technology,has drawn wide attention due to its simplicity,reliability,and ease of use.VPLS can implement multipoint-to-multipoint interconnection of Local Area Networks(LAN)in the wide area.Its core elements include the Label Distribution Protocol(LDP)based or Border Gateway Protocol(BGP)based Pseudowire(PW)setup and maintenance on the control plane,Media Access Control(MAC)address learning on the data plane,and PW encapsulation on the transport plane.With hierarchical architecture,VPLS enables cross-domain Virtual Local Area Network(VLAN)services.Benefitting from its unique technical advantages,VPLS supports a wide variety of applications including L2VPN for VIP customers,municipal communications infrastructure and personal distributed services.展开更多
HSDPA(High Speed Downlink Packet Access)technology is a type of enhanced WCDMA technology based on R5 and employed with a 5 MHz spectrum.It can provide a maximum bit rate of 13.9 Mb/s thereby dramatically extending th...HSDPA(High Speed Downlink Packet Access)technology is a type of enhanced WCDMA technology based on R5 and employed with a 5 MHz spectrum.It can provide a maximum bit rate of 13.9 Mb/s thereby dramatically extending the transmission rate and spectrum efficiency of R99 version.Currently,it is the first choice of mobile operators for high bit rate mobile multimedia services.All the mobile technologies and their characteristics,which are employed by HSDPA system in WCDMA,are analyzed in the following.The possible applications of HSDPA are also discussed in this article.展开更多
When computers and communication devices are available everywhere in the future,the categories of communication will expand to cover not only the man-man and the man-machine,but also the machine-machine(M2M)communicat...When computers and communication devices are available everywhere in the future,the categories of communication will expand to cover not only the man-man and the man-machine,but also the machine-machine(M2M)communication.Someday,the traffic generated by machines will greatly exceed those of man-machine and man-man applications.Large numbers of M2M applications will need various wireless networks to support them.This paper introduces the characteristics,advantages and disadvantages of the currently available various wireless network technologies,including WiFi,Bluetooth,ZigBee,passive RFID and the 802.15 standard networks.展开更多
The paper introduces two typical 3G services:the mobile multimedia short message service and the streaming media service. The former is considered as a strong driving force to promote the development of 3G services an...The paper introduces two typical 3G services:the mobile multimedia short message service and the streaming media service. The former is considered as a strong driving force to promote the development of 3G services and applications.The latter is regarded as a typical service on future 3G networks.As supporting technologies of 3G services,open service architecture and open mobile architecture are also discussed.展开更多
Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applic...Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applications. The Terahertz region has been the focus of research worldwide since early 1990s. Due to their unique characteristics, Terahertz technologies have a wide range of applications, such as hazard detection, high speed data communications, radio astronomy, and biomedical imaging.展开更多
Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applic...Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applications. The Terahertz region has been the focus of research worldwide since early 1990s. Due to their unique characteristics, Terahertz technologies have a wide range of applications, such as hazard detection, high speed data communications, radio astronomy, and biomedical imaging.展开更多
This paper provides an extension to the earlier work wherein a comparison between different models that had studied the effects of several parameters scaling on the performance of carbon nano tube field-effect transis...This paper provides an extension to the earlier work wherein a comparison between different models that had studied the effects of several parameters scaling on the performance of carbon nano tube field-effect transistors was presented. The evaluation for the studied models, with regard to the scaling effects, was to determine those which best reflect the very essence of carbon nano-tube technologies. Whereas the models subject this comparison （Fettoy, Roy, Stanford, and Southampton） were affected to varying degrees due to such parametric variations, the Stanford model was shown as still being valid for a wide range of chiralities and diameter sizes; a model that is also applicable for circuit simulations. In this paper, we present a comparative assessment of the various models subject to the study with regard to the effect of incorporating multiple carbon nanotubes in the channel region. We also assess the effect of oxide thickness on transistor performance in terms of the supply voltage threshold effects. Results leveraging our findings in this ongoing research endeavor reveal that many research efforts were not efficient to high degree due to high delay and not valid for circuit simulations.展开更多
A Chinese delegation of 24 persons headed by Mr. Luan Enjie, Vice Administrator of China National Space Administration (CNSA) attended the Second Asia-Pacific Conference on Multilateral Cooperation in Space Technology...A Chinese delegation of 24 persons headed by Mr. Luan Enjie, Vice Administrator of China National Space Administration (CNSA) attended the Second Asia-Pacific Conference on Multilateral Cooperation in Space Technology and Applications held at Islamabad, the Capital of Pakistan from April 22 to 26, 1995. Following the First AsiaPacific Workshop held in Beijing in December, 1992, and the First Asia-Pacific Conference on Multilateral Cooperation in展开更多
Disaster warning,disaster estimation and relief depend more and more on the application of space remote sensing technologies,such as those used for optic-camera,hyperspectrum,infrared,SAR,seismo-electromagnet and grav...Disaster warning,disaster estimation and relief depend more and more on the application of space remote sensing technologies,such as those used for optic-camera,hyperspectrum,infrared,SAR,seismo-electromagnet and gravitation measurement.On May 12,2008,a magnitude of 8.展开更多
Since the Asia Pacific Workshop on Multilateral Cooperation in Space Technology and Applications was held in Beijing in December, 1992, the preparatory committee for Asia-Pacific Space Cooperation Mechanism and the Li...Since the Asia Pacific Workshop on Multilateral Cooperation in Space Technology and Applications was held in Beijing in December, 1992, the preparatory committee for Asia-Pacific Space Cooperation Mechanism and the Liaison Committee for AP-MC-STA have done many fruitful works. Thanks to the First Asia Pacific Conference on Multilateral Cooperation in Space Tech-展开更多
The environmental conditions in China are still very serious. In the years to come, the mission for environmental treatment and protection, supervision,
Artificial intelligence(AI)is moving toward a new stage in its generalized development.To explain the upgrading path of sustainable design driven by AI can provide a certain basis and support for its application in de...Artificial intelligence(AI)is moving toward a new stage in its generalized development.To explain the upgrading path of sustainable design driven by AI can provide a certain basis and support for its application in design.Based on research into modern intelligence technology and design practices,this article(1)focuses on AI+,by means of relational comparisons and hierarchical structure analysis;(2)studies the value-added effect and new characteristics exhibited by the content,method,process,form,effect,and other aspects of design under the concept of sustainability;and(3)explores the upgrading mode and technological application of sustainable design,whose development is obviously influenced by the new generation of intelligence technology,through the upgrading paths of sensation,thinking,simulacrum,and construction.The continuous integration of sustainable design and AI is a trend that will endow the design process and designed objects with intelligent functions and multiple characteristics from the dimensions of cognition,thought,expression,and action.New tools and subjects will profoundly affect the value creation of design in the dimensions of environment,economy,and society.展开更多
Journal Introduction"International Journal of Plant Engineering and Management"is in the charge of Ministry of Industry and Information Technology of the People's Republic of China,and organized by North...Journal Introduction"International Journal of Plant Engineering and Management"is in the charge of Ministry of Industry and Information Technology of the People's Republic of China,and organized by Northwestern Polytechnical University.It is a kind of English academic quarterly publication publicly issued at home and abroad.Plant engineering and management is a comprehensive interdisciplinary subject mainly reporting academic research on the application technology of equipment and industry management.展开更多
文摘This Special Topic of the Journal of Semiconductors(JOS)features expanded versions of key articles presented at the 2024 IEEE International Conference on Integrated Circuits Technologies and Applications(ICTA),which was held in Hangzhou,Zhejiang,China,from October 25 to 27,2024.
文摘The increasing requirements for bandwidth drive the 100G Ethernet into use as quickly as possible.The major technologies supporting 100G Ethernet interface include the physical layer channel convergence technology,multi-fiber channel and Wavelength Division Multiplexing(WDM)technology.The key technology for high-speed optical devices at the interface requires a breakthrough.The demands driven by the increase of interface rate require better packet processing and storage,system switching,and backplane technology.In addition,in the network,the transport problem of the new interface should be solved,including defining transport standards and pushing the development of key transport technologies.As far as the cost and requirements are concerned,the commercial application of 100G Ethernet is viable in Metropolitan Area Networks(MANs).
文摘Cloud computing technology is changing the development and usage patterns of IT infrastructure and applications. Virtualized and distributed systems as well as unified management and scheduling has greatly im proved computing and storage. Management has become easier, andOAM costs have been significantly reduced. Cloud desktop technology is develop ing rapidly. With this technology, users can flexibly and dynamically use virtual ma chine resources, companies＇ efficiency of using and allocating resources is greatly improved, and information security is ensured. In most existing virtual cloud desk top solutions, computing and storage are bound together, and data is stored as im age files. This limits the flexibility and expandability of systems and is insufficient for meetinz customers＇ requirements in different scenarios.
基金This work was supported in part by the National Natural Science Foundation of China under Grant 62203468Young Elite Scientist Sponsorship Program by CAST under Grant 2022QNRC001+1 种基金Foundation of China State Railway Group Co.,Ltd.under Grant K2021X001Foundation of China Academy of Railway Sciences Corporation Limited under Grant 2021YJ315.
文摘Purpose–The intelligent Central Traffic Control(CTC)system plays a vital role in establishing an intelligent high-speed railway(HSR)system.As the core of HSR transportation command,the intelligent CTC system is a new HSR dispatching command system that integrates the widely used CTC in China with the practical service requirements of intelligent dispatching.This paper aims to propose key technologies and applications for intelligent dispatching command in HSR in China.Design/methodology/approach–This paper first briefly introduces the functions and configuration of the intelligent CTC system.Some new servers,terminals and interfaces are introduced,which are plan adjustment server/terminal,interface for automatic train operation(ATO),interface for Dynamic Monitoring System of Train Control Equipment(DMS),interface for Power Supervisory Control and Data Acquisition(PSCADA),interface for Disaster Monitoring,etc.Findings–The key technologies applied in the intelligent CTC system include automatic adjustment of train operation plans,safety control of train routes and commands,traffic information data platform,integrated simulation of traffic dispatching and ATO function.These technologies have been applied in the Beijing-Zhangjiakou HSR,which commenced operations at the end of 2019.Implementing these key intelligent functions has improved the train dispatching command capacity,ensured the safe operation of intelligent HSR,reduced the labor intensity of dispatching operators and enhanced the intelligence level of China’s dispatching system.Originality/value–This paper provides further challenges and research directions for the intelligent dispatching command of HSR.To achieve the objectives,new measures need to be conducted,including the development of advanced technologies for intelligent dispatching command,coping with new requirements with the development of China’s railway signaling system,the integration of traffic dispatching and train control and the application of AI and data-driven modeling and methods.
文摘Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applications. The Terahertz region has been the focus of research worldwide since early 1990s. Due to their unique characteristics, Terahertz technologies have a wide range of applications, such as hazard detection, high speed data communications, radio astronomy, and biomedical imaging.
文摘During the past few years, the terahertz （THz） frequency regime has had renewed scientific and technological interest because of recent breakthroughs in the areas of high power sources, sensitive detectors, novel materials, and high resolution video imaging. Because it lies between the radio frequencies and infrared wavelengths, the terahertz electromagnetic region was thought to be promising for practical applications （300 micrometers wavelength corresponds to 1 THz frequency）, but it suffered from very high attenuation through the atmosphere （above 1 dB/meter）, and was found to be difficult to generate, modulate, and detect. On the other hand, many non-polar dielectric materials are transparent to THz waves,
基金supported by the Startup Program of Innovative Young Talents of Jiangsu Provincial Natural Science Foundation under Grant No.BK2007604
文摘Among all the metro Ethernet technologies,Virtual Private LAN Service(VPLS),a Layer 2 Virtual Private Network(L2VPN)technology,has drawn wide attention due to its simplicity,reliability,and ease of use.VPLS can implement multipoint-to-multipoint interconnection of Local Area Networks(LAN)in the wide area.Its core elements include the Label Distribution Protocol(LDP)based or Border Gateway Protocol(BGP)based Pseudowire(PW)setup and maintenance on the control plane,Media Access Control(MAC)address learning on the data plane,and PW encapsulation on the transport plane.With hierarchical architecture,VPLS enables cross-domain Virtual Local Area Network(VLAN)services.Benefitting from its unique technical advantages,VPLS supports a wide variety of applications including L2VPN for VIP customers,municipal communications infrastructure and personal distributed services.
文摘HSDPA(High Speed Downlink Packet Access)technology is a type of enhanced WCDMA technology based on R5 and employed with a 5 MHz spectrum.It can provide a maximum bit rate of 13.9 Mb/s thereby dramatically extending the transmission rate and spectrum efficiency of R99 version.Currently,it is the first choice of mobile operators for high bit rate mobile multimedia services.All the mobile technologies and their characteristics,which are employed by HSDPA system in WCDMA,are analyzed in the following.The possible applications of HSDPA are also discussed in this article.
文摘When computers and communication devices are available everywhere in the future,the categories of communication will expand to cover not only the man-man and the man-machine,but also the machine-machine(M2M)communication.Someday,the traffic generated by machines will greatly exceed those of man-machine and man-man applications.Large numbers of M2M applications will need various wireless networks to support them.This paper introduces the characteristics,advantages and disadvantages of the currently available various wireless network technologies,including WiFi,Bluetooth,ZigBee,passive RFID and the 802.15 standard networks.
文摘The paper introduces two typical 3G services:the mobile multimedia short message service and the streaming media service. The former is considered as a strong driving force to promote the development of 3G services and applications.The latter is regarded as a typical service on future 3G networks.As supporting technologies of 3G services,open service architecture and open mobile architecture are also discussed.
文摘Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applications. The Terahertz region has been the focus of research worldwide since early 1990s. Due to their unique characteristics, Terahertz technologies have a wide range of applications, such as hazard detection, high speed data communications, radio astronomy, and biomedical imaging.
文摘Terahertz waves, sitting in the gap between the middle infrared and millimeter wave regions, are known as the last vacant area of the electromagnetic spectrum that has not quite been understood and brought into applications. The Terahertz region has been the focus of research worldwide since early 1990s. Due to their unique characteristics, Terahertz technologies have a wide range of applications, such as hazard detection, high speed data communications, radio astronomy, and biomedical imaging.
文摘This paper provides an extension to the earlier work wherein a comparison between different models that had studied the effects of several parameters scaling on the performance of carbon nano tube field-effect transistors was presented. The evaluation for the studied models, with regard to the scaling effects, was to determine those which best reflect the very essence of carbon nano-tube technologies. Whereas the models subject this comparison （Fettoy, Roy, Stanford, and Southampton） were affected to varying degrees due to such parametric variations, the Stanford model was shown as still being valid for a wide range of chiralities and diameter sizes; a model that is also applicable for circuit simulations. In this paper, we present a comparative assessment of the various models subject to the study with regard to the effect of incorporating multiple carbon nanotubes in the channel region. We also assess the effect of oxide thickness on transistor performance in terms of the supply voltage threshold effects. Results leveraging our findings in this ongoing research endeavor reveal that many research efforts were not efficient to high degree due to high delay and not valid for circuit simulations.
文摘A Chinese delegation of 24 persons headed by Mr. Luan Enjie, Vice Administrator of China National Space Administration (CNSA) attended the Second Asia-Pacific Conference on Multilateral Cooperation in Space Technology and Applications held at Islamabad, the Capital of Pakistan from April 22 to 26, 1995. Following the First AsiaPacific Workshop held in Beijing in December, 1992, and the First Asia-Pacific Conference on Multilateral Cooperation in
文摘Disaster warning,disaster estimation and relief depend more and more on the application of space remote sensing technologies,such as those used for optic-camera,hyperspectrum,infrared,SAR,seismo-electromagnet and gravitation measurement.On May 12,2008,a magnitude of 8.
文摘Since the Asia Pacific Workshop on Multilateral Cooperation in Space Technology and Applications was held in Beijing in December, 1992, the preparatory committee for Asia-Pacific Space Cooperation Mechanism and the Liaison Committee for AP-MC-STA have done many fruitful works. Thanks to the First Asia Pacific Conference on Multilateral Cooperation in Space Tech-
文摘The environmental conditions in China are still very serious. In the years to come, the mission for environmental treatment and protection, supervision,
文摘Artificial intelligence(AI)is moving toward a new stage in its generalized development.To explain the upgrading path of sustainable design driven by AI can provide a certain basis and support for its application in design.Based on research into modern intelligence technology and design practices,this article(1)focuses on AI+,by means of relational comparisons and hierarchical structure analysis;(2)studies the value-added effect and new characteristics exhibited by the content,method,process,form,effect,and other aspects of design under the concept of sustainability;and(3)explores the upgrading mode and technological application of sustainable design,whose development is obviously influenced by the new generation of intelligence technology,through the upgrading paths of sensation,thinking,simulacrum,and construction.The continuous integration of sustainable design and AI is a trend that will endow the design process and designed objects with intelligent functions and multiple characteristics from the dimensions of cognition,thought,expression,and action.New tools and subjects will profoundly affect the value creation of design in the dimensions of environment,economy,and society.
文摘Journal Introduction"International Journal of Plant Engineering and Management"is in the charge of Ministry of Industry and Information Technology of the People's Republic of China,and organized by Northwestern Polytechnical University.It is a kind of English academic quarterly publication publicly issued at home and abroad.Plant engineering and management is a comprehensive interdisciplinary subject mainly reporting academic research on the application technology of equipment and industry management.
