We study the one-dimensional asymmetric simple exclusion process （ASEP） with generic open boundaries （in- cluding current-counting deformation）, and obtain the exact solutions of this ASEP via the off-diagonal Bet...We study the one-dimensional asymmetric simple exclusion process （ASEP） with generic open boundaries （in- cluding current-counting deformation）, and obtain the exact solutions of this ASEP via the off-diagonal Bethe ansatz method. In particular, numerical results for the small size asymmetric simple exclusion process indicate that the spectrum obtained by the Bethe ansatz equations is complete. Moreover, we present the eigenvalue of the totally asymmetric exclusion process and the corresponding Bethe ansatz equations.展开更多
The surface micro-discharge(SMD)excited by pulsed voltage in open air is experimentally studied by measuring its voltage,current,emission image,emission spectrum,and ultraviolet(UV)absorption spectrum.It is found that...The surface micro-discharge(SMD)excited by pulsed voltage in open air is experimentally studied by measuring its voltage,current,emission image,emission spectrum,and ultraviolet(UV)absorption spectrum.It is found that the SMD occurs intermittently in each cycle,and that it consists of many filaments on the surface of grounded electrode.While the applied voltage’s peak value Up increases from 1.75 kV to 7.25 kV,the discharge area keeps expanding until Up≈6 kV,when the discharge occupies all the available area.The emission spectrum of nitrogen metastable N2(C-B)and the density of ozone increase almost linearly.The ozone density decreases hyperbolically downstream of the grounded electrode due to the diffusion in open air.The characteristics of pulsed SMD are presented and analyzed as well,which may be referred by further investigations.展开更多
在回顾了现有的开放式频谱系统中的动态频谱分配算法后,基于快速收敛和公平性两方面的性能因素并兼顾系统总带宽性能,提出了两种易于实现且具有良好收敛性能的启发式频谱动态分配算法——兼顾最大化系统总带宽的快速收敛算法(fast conve...在回顾了现有的开放式频谱系统中的动态频谱分配算法后,基于快速收敛和公平性两方面的性能因素并兼顾系统总带宽性能,提出了两种易于实现且具有良好收敛性能的启发式频谱动态分配算法——兼顾最大化系统总带宽的快速收敛算法(fast convergency algorithm with maximum bandwidth,简称FCMB)和兼顾最大化系统总带宽的启发式公平性分配算法(heuristic fairness algorithm with maximum bandwidth,简称HFWB).通过大量的仿真实验,就系统总带宽、公平性以及收敛性能3个方面,与现有的协调式最大化系统总带宽(collaboration max-sum-bandwidth,简称CMSB)算法、随机分布式算法(randomized distributed algorithm,简称RAND)以及以最大化系统总带宽为目标的理论最优(theoretical max-bandwidth optimal,简称OPTL)算法进行了比较,并针对主、次用户数目变化、系统中信道数目以及次用户干扰区域半径大小变化等不同系统参数情况下各种算法的性能进行了对比分析.仿真结果表明,在综合考虑系统总带宽的基础上,FCMB算法和HFWB算法在快速收敛和兼顾系统带宽的公平性能上分别表现突出,尤其是FCMB算法,其在收敛速度上远远优于其他算法(和与其在系统吞吐性能上表现相近的CMSB算法相比,在收敛性能上至少有300%的提高).展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11375141,11475135,11434013 and 11425522the Ministry of Education Doctoral Program Fund under Grant No 20126101110004the Northwest University Graduate Student Innovation Fund under Grant No YZZ14104
文摘We study the one-dimensional asymmetric simple exclusion process （ASEP） with generic open boundaries （in- cluding current-counting deformation）, and obtain the exact solutions of this ASEP via the off-diagonal Bethe ansatz method. In particular, numerical results for the small size asymmetric simple exclusion process indicate that the spectrum obtained by the Bethe ansatz equations is complete. Moreover, we present the eigenvalue of the totally asymmetric exclusion process and the corresponding Bethe ansatz equations.
基金Project supported by Fundamental Research Fund for the Central Universities of China,State Key Laboratory of Electrical Insulation and Power Equipment(EIPE11108)
文摘The surface micro-discharge(SMD)excited by pulsed voltage in open air is experimentally studied by measuring its voltage,current,emission image,emission spectrum,and ultraviolet(UV)absorption spectrum.It is found that the SMD occurs intermittently in each cycle,and that it consists of many filaments on the surface of grounded electrode.While the applied voltage’s peak value Up increases from 1.75 kV to 7.25 kV,the discharge area keeps expanding until Up≈6 kV,when the discharge occupies all the available area.The emission spectrum of nitrogen metastable N2(C-B)and the density of ozone increase almost linearly.The ozone density decreases hyperbolically downstream of the grounded electrode due to the diffusion in open air.The characteristics of pulsed SMD are presented and analyzed as well,which may be referred by further investigations.
基金Supported by the National Basic Research Program of China under Grant No.2003CB314806(国家重点基础研究发展计划(973)) the National High-Tech Research and Development Plan of China under Grant No.2007AA12Z321(国家高技术研究发展计划(863))+2 种基金National Natural Science Foundation of China under Grant Nos.60603060 60472067 90604019 (国家自然科学基金)
文摘在回顾了现有的开放式频谱系统中的动态频谱分配算法后,基于快速收敛和公平性两方面的性能因素并兼顾系统总带宽性能,提出了两种易于实现且具有良好收敛性能的启发式频谱动态分配算法——兼顾最大化系统总带宽的快速收敛算法(fast convergency algorithm with maximum bandwidth,简称FCMB)和兼顾最大化系统总带宽的启发式公平性分配算法(heuristic fairness algorithm with maximum bandwidth,简称HFWB).通过大量的仿真实验,就系统总带宽、公平性以及收敛性能3个方面,与现有的协调式最大化系统总带宽(collaboration max-sum-bandwidth,简称CMSB)算法、随机分布式算法(randomized distributed algorithm,简称RAND)以及以最大化系统总带宽为目标的理论最优(theoretical max-bandwidth optimal,简称OPTL)算法进行了比较,并针对主、次用户数目变化、系统中信道数目以及次用户干扰区域半径大小变化等不同系统参数情况下各种算法的性能进行了对比分析.仿真结果表明,在综合考虑系统总带宽的基础上,FCMB算法和HFWB算法在快速收敛和兼顾系统带宽的公平性能上分别表现突出,尤其是FCMB算法,其在收敛速度上远远优于其他算法(和与其在系统吞吐性能上表现相近的CMSB算法相比,在收敛性能上至少有300%的提高).
