Developments in new-generation information technology have enabled Digital Twins to reshape the physical world into a virtual digital space and provide technical support for constructing the Metaverse.Metaverse object...Developments in new-generation information technology have enabled Digital Twins to reshape the physical world into a virtual digital space and provide technical support for constructing the Metaverse.Metaverse objects can be at the micro-,meso-,or macroscale.The Metaverse is a complex collection of solid,liquid,gaseous,plasma,and other uncertain states.Additionally,the Metaverse integrates tangibles with social relations,such as interpersonal(friends,partners,and family)and social relations(ethics,morality,and law).This review introduces some principles and laws,such as broken windows theory,small-world phenomenon,survivor bias,and herd behavior,for constructing a Digital Twins model for social relations.Therefore,from multiple perspectives,this article reviews mappings of tangible and intangible real-world objects to the Metaverse using the Digital Twins model.展开更多
Our goal is to develop THz module on chip to visualize bone grinding at the early stage so that arthritis can be visualized and treated early.A critical component of such module is antenna.A compact 4 by 4 beamforming...Our goal is to develop THz module on chip to visualize bone grinding at the early stage so that arthritis can be visualized and treated early.A critical component of such module is antenna.A compact 4 by 4 beamforming antenna array for biomedical application is presented in this paper.We are proposing a novel antenna which is in the form of a circular ribbon shape with a gold patch.Gold material for the patch is used to enhance its conductivity and to cut down backward radiation.Differential port pin used to increase the bandwidth.Au-posts are finally used for output connection.The proposed antenna operates over the frequency band from 201 GHz to more than 228 GHz.Directivity and gain of the proposed antenna are 13 dB and 7 dB respectively.This makes it applicable for imaging systems because of the frequency band for biomedical imaging.Index Terms-Beamforming antenna,antenna array,Advanced design system(ADS),Biomedical imaging.展开更多
A novel architecture for Wireless Power Transfer(WPT)module using monolithic components on GaN is presented in this paper.The design of such a WPT module receives DC power from solar panels,consists of photonic power ...A novel architecture for Wireless Power Transfer(WPT)module using monolithic components on GaN is presented in this paper.The design of such a WPT module receives DC power from solar panels,consists of photonic power converter(PPC),beamforming antenna,low pass filter,input matching network,rectifier,output matching network and logic circuit(off-chip)which are all integrated on a GaN chip.Our WPT components show excellent simulated performance,for example,our novel beam-forming antenna and multiple port wideband antenna have a gain of 8.7 dB and 7.3 dB respectively.We have added a band pass filter to the rectifier output which gives two benefits to the circuit.The first one is filtering circuit will remove unwanted harmonics before collecting DC power and second is filter will boost the efficiency of rectifier by optimizing the load impedance.Our proposed rectifier has RF-DC conversion efficiency of 74%and 67%with beam-forming antenna and multiple port wide band antenna respectively.Our WPT module is designed to charge a rechargeable battery(3 V and 1 mA)of a radio module which will be used between two antennas in future 5G networks.We believe our proposed WPT module architecture is unique and it is applicable to both microwave and millimeter wave systems such as 6G.展开更多
It is our great pleasure to announce the publication of this special section in Journal of Computer Science and Technology(JCST),Memory-Centric System Research for High-Performance Computing(HPC).The growing disparity...It is our great pleasure to announce the publication of this special section in Journal of Computer Science and Technology(JCST),Memory-Centric System Research for High-Performance Computing(HPC).The growing disparity between CPU speed and memory speed,known as the memory-wall problem,has been a long-standing challenge in the computing industry.Several memory technologies and architectures including 3Dstacked memory,non-volatile random-access memory(NVRAM),memristor,hybrid software and hardware caches,etc.have been introduced in recent years to address the infamous memory-wall problem.展开更多
文摘Developments in new-generation information technology have enabled Digital Twins to reshape the physical world into a virtual digital space and provide technical support for constructing the Metaverse.Metaverse objects can be at the micro-,meso-,or macroscale.The Metaverse is a complex collection of solid,liquid,gaseous,plasma,and other uncertain states.Additionally,the Metaverse integrates tangibles with social relations,such as interpersonal(friends,partners,and family)and social relations(ethics,morality,and law).This review introduces some principles and laws,such as broken windows theory,small-world phenomenon,survivor bias,and herd behavior,for constructing a Digital Twins model for social relations.Therefore,from multiple perspectives,this article reviews mappings of tangible and intangible real-world objects to the Metaverse using the Digital Twins model.
文摘Our goal is to develop THz module on chip to visualize bone grinding at the early stage so that arthritis can be visualized and treated early.A critical component of such module is antenna.A compact 4 by 4 beamforming antenna array for biomedical application is presented in this paper.We are proposing a novel antenna which is in the form of a circular ribbon shape with a gold patch.Gold material for the patch is used to enhance its conductivity and to cut down backward radiation.Differential port pin used to increase the bandwidth.Au-posts are finally used for output connection.The proposed antenna operates over the frequency band from 201 GHz to more than 228 GHz.Directivity and gain of the proposed antenna are 13 dB and 7 dB respectively.This makes it applicable for imaging systems because of the frequency band for biomedical imaging.Index Terms-Beamforming antenna,antenna array,Advanced design system(ADS),Biomedical imaging.
文摘A novel architecture for Wireless Power Transfer(WPT)module using monolithic components on GaN is presented in this paper.The design of such a WPT module receives DC power from solar panels,consists of photonic power converter(PPC),beamforming antenna,low pass filter,input matching network,rectifier,output matching network and logic circuit(off-chip)which are all integrated on a GaN chip.Our WPT components show excellent simulated performance,for example,our novel beam-forming antenna and multiple port wideband antenna have a gain of 8.7 dB and 7.3 dB respectively.We have added a band pass filter to the rectifier output which gives two benefits to the circuit.The first one is filtering circuit will remove unwanted harmonics before collecting DC power and second is filter will boost the efficiency of rectifier by optimizing the load impedance.Our proposed rectifier has RF-DC conversion efficiency of 74%and 67%with beam-forming antenna and multiple port wide band antenna respectively.Our WPT module is designed to charge a rechargeable battery(3 V and 1 mA)of a radio module which will be used between two antennas in future 5G networks.We believe our proposed WPT module architecture is unique and it is applicable to both microwave and millimeter wave systems such as 6G.
文摘It is our great pleasure to announce the publication of this special section in Journal of Computer Science and Technology(JCST),Memory-Centric System Research for High-Performance Computing(HPC).The growing disparity between CPU speed and memory speed,known as the memory-wall problem,has been a long-standing challenge in the computing industry.Several memory technologies and architectures including 3Dstacked memory,non-volatile random-access memory(NVRAM),memristor,hybrid software and hardware caches,etc.have been introduced in recent years to address the infamous memory-wall problem.
