The crossover between short-range and long-range(LR)universal behaviors remains a central theme in the physics of LR interacting systems.The competition between LR coupling and the Berezinskii-Kosterlitz-Thouless mech...The crossover between short-range and long-range(LR)universal behaviors remains a central theme in the physics of LR interacting systems.The competition between LR coupling and the Berezinskii-Kosterlitz-Thouless mechanism makes the problem more subtle and less understood in the two-dimensional(2D)XY model,a cornerstone for investigating low-dimensional phenomena and their implications in quantum computation.We study the 2D XY model with algebraically decaying interaction~1/r^(2+σ).Utilizing an advanced update strategy,we conduct LR Monte Carlo simulations of the model up to a linear size of L=8192.Our results demonstrate continuous phase transitions into a ferromagnetic phase forσ<2,which exhibit the simultaneous emergence of a long-ranged order and a power-law decaying correlation function due to the Goldstone mode.Furthermore,we fnd logarithmic scaling behaviors in the low-temperature phase atσ=2.The observed scaling behaviors in the low-temperature phase forσ≤2 agree with our theoretical analysis.Our fndings request further theoretical understanding and can be of practical application in cutting-edge experiments like Rydberg atom arrays.展开更多
The rapid evolution of satellite constellation projects(e.g.,SpaceX)and the standardization of 3rd Generation Partnership Project(3GPP)non-terrestrial networks(NTNs)have positioned satellite Internet networking(SIN)as...The rapid evolution of satellite constellation projects(e.g.,SpaceX)and the standardization of 3rd Generation Partnership Project(3GPP)non-terrestrial networks(NTNs)have positioned satellite Internet networking(SIN)as a cornerstone of future communication systems.The demand for ubiquitous connectivity,resilient infrastructures,and intelligent network services has never been greater,driven by applications ranging from global broadband access to emergency response and space-air-ground integration.展开更多
A novel suppression method of the phase noise is proposed to reduce the negative impacts of phase noise in coherent optical orthogonal frequency division multiplexing(CO-OFDM)systems.The method integrates the sub-symb...A novel suppression method of the phase noise is proposed to reduce the negative impacts of phase noise in coherent optical orthogonal frequency division multiplexing(CO-OFDM)systems.The method integrates the sub-symbol second-order polynomial interpolation(SSPI)with cubature Kalman filter(CKF)to improve the precision and effectiveness of the data processing through using a three-stage processing approach of phase noise.First of all,the phase noise values in OFDM symbols are calculated by using pilot symbols.Then,second-order Newton interpolation(SNI)is used in second-order interpolation to acquire precise noise estimation.Afterwards,every OFDM symbol is partitioned into several sub-symbols,and second-order polynomial interpolation(SPI)is utilized in the time domain to enhance suppression accuracy and time resolution.Ultimately,CKF is employed to suppress the residual phase noise.The simulation results show that this method significantly suppresses the impact of the phase noise on the system,and the error floors can be decreased at the condition of 16 quadrature amplitude modulation(16QAM)and 32QAM.The proposed method can greatly improve the CO-OFDM system's ability to tolerate the wider laser linewidth.This method,compared to the linear interpolation sub-symbol common phase error compensation(LI-SCPEC)and Lagrange interpolation and extended Kalman filter(LRI-EKF)algorithms,has superior suppression effect.展开更多
Pathogens and pests are major threats to agricultural productivity and food security.Diseases in major crops caused by pathogens or pests can reduce annual yields by up to 40%(Ficke et al.,2018),resulting in billions ...Pathogens and pests are major threats to agricultural productivity and food security.Diseases in major crops caused by pathogens or pests can reduce annual yields by up to 40%(Ficke et al.,2018),resulting in billions of dollars in economic losses each year.There is an urgent need to develop innovative and sustainable technologies to protect crops from pathogens and pests and to enhance the resilience of agricultural systems.The plant immune system,which protects plants from numerous pathogens and pests,has been the focus of intensive research over the past decades.With rapid advancement in mechanistic understanding and biotechnological development,rational design of precisely regulated plant immune surveillance has become increasingly feasible.This approach is now central to breeding crops with enhanced disease/pest resistance,supporting global food security and sustainable agriculture.展开更多
With the rapid development of electric vehicles and energy storage systems,the demand for high-energy-density lithium batteries continues to rise[1].However,higher energy density often increases safety risks,particula...With the rapid development of electric vehicles and energy storage systems,the demand for high-energy-density lithium batteries continues to rise[1].However,higher energy density often increases safety risks,particularly thermal runaway(TR),which can lead to combustion or explosion.TR is typically initiated by mechanical,electrical,or thermal abuse,and the process involves the decomposition of the solid electrolyte interphase(SEl),separator melting leading to internal short circuits,chemical crosstalk between the electrodes accompanied by violent energy release,and complete combustion of all materials[2].展开更多
The landscape of chemistry and chemical engineering is undergoing a profound and rapid transformation.As the global community faces unprecedented challenges,ranging from the urgent need to mitigate climate change and ...The landscape of chemistry and chemical engineering is undergoing a profound and rapid transformation.As the global community faces unprecedented challenges,ranging from the urgent need to mitigate climate change and achieve net-zero emissions,to the transition toward a circular economy and the demand for sustainable energy systems,the traditional boundaries of chemical sciences are continually being redefined.We are experiencing a transformation shift from empirical,trial-and-error methodologies toward rational,data-driven design and atomiclevel precision.At the heart of this scientific revolution is a vibrant,innovative,and deeply committed generation of early-career scholars.展开更多
Faced with the wave of global energy structure transition,it is imperative to promote the application of renewable power generators(RPGs),such as wind energy,in power systems.Thus,wind turbine generation(WTG)has been ...Faced with the wave of global energy structure transition,it is imperative to promote the application of renewable power generators(RPGs),such as wind energy,in power systems.Thus,wind turbine generation(WTG)has been gradually promoted.To improve the inertia response(IR)and primary frequency regulation(PFR)capability of WTG in power systems,the gridforming control strategy of WTG(GFM-WTG),which displays an independent IR ability,has shown great potential in PFR,especially in weak grids.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.12204173 and 12275263)the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0301900)supported by the Natural Science Foundation of Fujian Province 802 of China(Grant No.2023J02032)。
文摘The crossover between short-range and long-range(LR)universal behaviors remains a central theme in the physics of LR interacting systems.The competition between LR coupling and the Berezinskii-Kosterlitz-Thouless mechanism makes the problem more subtle and less understood in the two-dimensional(2D)XY model,a cornerstone for investigating low-dimensional phenomena and their implications in quantum computation.We study the 2D XY model with algebraically decaying interaction~1/r^(2+σ).Utilizing an advanced update strategy,we conduct LR Monte Carlo simulations of the model up to a linear size of L=8192.Our results demonstrate continuous phase transitions into a ferromagnetic phase forσ<2,which exhibit the simultaneous emergence of a long-ranged order and a power-law decaying correlation function due to the Goldstone mode.Furthermore,we fnd logarithmic scaling behaviors in the low-temperature phase atσ=2.The observed scaling behaviors in the low-temperature phase forσ≤2 agree with our theoretical analysis.Our fndings request further theoretical understanding and can be of practical application in cutting-edge experiments like Rydberg atom arrays.
文摘The rapid evolution of satellite constellation projects(e.g.,SpaceX)and the standardization of 3rd Generation Partnership Project(3GPP)non-terrestrial networks(NTNs)have positioned satellite Internet networking(SIN)as a cornerstone of future communication systems.The demand for ubiquitous connectivity,resilient infrastructures,and intelligent network services has never been greater,driven by applications ranging from global broadband access to emergency response and space-air-ground integration.
基金supported by the National Natural Science Foundation of China(Nos.U21A20447 and 61971079)。
文摘A novel suppression method of the phase noise is proposed to reduce the negative impacts of phase noise in coherent optical orthogonal frequency division multiplexing(CO-OFDM)systems.The method integrates the sub-symbol second-order polynomial interpolation(SSPI)with cubature Kalman filter(CKF)to improve the precision and effectiveness of the data processing through using a three-stage processing approach of phase noise.First of all,the phase noise values in OFDM symbols are calculated by using pilot symbols.Then,second-order Newton interpolation(SNI)is used in second-order interpolation to acquire precise noise estimation.Afterwards,every OFDM symbol is partitioned into several sub-symbols,and second-order polynomial interpolation(SPI)is utilized in the time domain to enhance suppression accuracy and time resolution.Ultimately,CKF is employed to suppress the residual phase noise.The simulation results show that this method significantly suppresses the impact of the phase noise on the system,and the error floors can be decreased at the condition of 16 quadrature amplitude modulation(16QAM)and 32QAM.The proposed method can greatly improve the CO-OFDM system's ability to tolerate the wider laser linewidth.This method,compared to the linear interpolation sub-symbol common phase error compensation(LI-SCPEC)and Lagrange interpolation and extended Kalman filter(LRI-EKF)algorithms,has superior suppression effect.
基金supported by Yazhouwan National Laboratorysupported by Yazhouwan National Laboratory(2310JM01)supported by the National Natural Science Foundation of China(32372490).
文摘Pathogens and pests are major threats to agricultural productivity and food security.Diseases in major crops caused by pathogens or pests can reduce annual yields by up to 40%(Ficke et al.,2018),resulting in billions of dollars in economic losses each year.There is an urgent need to develop innovative and sustainable technologies to protect crops from pathogens and pests and to enhance the resilience of agricultural systems.The plant immune system,which protects plants from numerous pathogens and pests,has been the focus of intensive research over the past decades.With rapid advancement in mechanistic understanding and biotechnological development,rational design of precisely regulated plant immune surveillance has become increasingly feasible.This approach is now central to breeding crops with enhanced disease/pest resistance,supporting global food security and sustainable agriculture.
基金supported by the Beijing Natural Science Foundation(2232037,F252071,2242041,and 2232054)Fundamental Research Funds for the Central Universities(FRF-GF-25-014).
文摘With the rapid development of electric vehicles and energy storage systems,the demand for high-energy-density lithium batteries continues to rise[1].However,higher energy density often increases safety risks,particularly thermal runaway(TR),which can lead to combustion or explosion.TR is typically initiated by mechanical,electrical,or thermal abuse,and the process involves the decomposition of the solid electrolyte interphase(SEl),separator melting leading to internal short circuits,chemical crosstalk between the electrodes accompanied by violent energy release,and complete combustion of all materials[2].
文摘The landscape of chemistry and chemical engineering is undergoing a profound and rapid transformation.As the global community faces unprecedented challenges,ranging from the urgent need to mitigate climate change and achieve net-zero emissions,to the transition toward a circular economy and the demand for sustainable energy systems,the traditional boundaries of chemical sciences are continually being redefined.We are experiencing a transformation shift from empirical,trial-and-error methodologies toward rational,data-driven design and atomiclevel precision.At the heart of this scientific revolution is a vibrant,innovative,and deeply committed generation of early-career scholars.
基金supported by the National Natural Science Foundation of China(Grant No.52325702)。
文摘Faced with the wave of global energy structure transition,it is imperative to promote the application of renewable power generators(RPGs),such as wind energy,in power systems.Thus,wind turbine generation(WTG)has been gradually promoted.To improve the inertia response(IR)and primary frequency regulation(PFR)capability of WTG in power systems,the gridforming control strategy of WTG(GFM-WTG),which displays an independent IR ability,has shown great potential in PFR,especially in weak grids.
