In this paper, two types of silicon（Si） particles ball-milled from n-type Si wafers, respectively, with resistivity values of 1 Ω·cm and 0.001 Ω·cm are deposited with silver（Ag）. The Ag-deposited n-typ...In this paper, two types of silicon（Si） particles ball-milled from n-type Si wafers, respectively, with resistivity values of 1 Ω·cm and 0.001 Ω·cm are deposited with silver（Ag）. The Ag-deposited n-type 1-Ω·cm Si particles（nl-Ag） and Ag-deposited n-type 0.001-Ω·cm Si particles（n0.001-Ag） are separately used as an anode material to assemble coin cells,of which the electrochemical performances are investigated. For the matching of work function between n-type 1-Ω·cm Si（nl） and Ag, nl-Ag shows discharge specific capacity of up to 683 mAh·g^-1 at a current density of 8.4 A·g^-1, which is40% higher than that of n0.001-Ag. Furthermore, the resistivity of nl-Ag is lower than half that of n0.001-Ag. Due to the mismatch of work function between n-type 0.001-Ω·cm Si（n0.001） and Ag, the discharge specific capacity of n0.001-Ag is 250.2 mAh·g^-1 lower than that of nl-Ag after 100 cycles.展开更多
This paper constructs a stochastic endogenous growth model through introducing into a matching function. We study the stochastic optimization problem of the workers and employers pursuing expectation discount effectiv...This paper constructs a stochastic endogenous growth model through introducing into a matching function. We study the stochastic optimization problem of the workers and employers pursuing expectation discount effectiveness (income or profit) maximum in the service market. By using stochastic analysis methods and process, we analyze the relationship between the number of employment, wage and labor input under equilibrium level. Moreover we discuss the workers 'welfare, some helpful results are obtained.展开更多
在进行多雷达多目标航迹匹配时,由于测元系统误差随跟踪距离传播,雷达测量精度下降,易出现航迹匹配错误的情况。针对该情况,应用多测元非线性融合模型,采用样条约束的误差模型最佳弹道估计(Error Model Best Estimation of Trajectory,E...在进行多雷达多目标航迹匹配时,由于测元系统误差随跟踪距离传播,雷达测量精度下降,易出现航迹匹配错误的情况。针对该情况,应用多测元非线性融合模型,采用样条约束的误差模型最佳弹道估计(Error Model Best Estimation of Trajectory,EMBET)方法对雷达测元系统误差进行自校准,将利用欧几里得距离进行航迹匹配的传统方法改为利用精度较高的雷达测距作差比较,有效解决了多雷达航迹匹配时的门限阈值合理设置的难题。仿真结果证明算法有效适用,可极大地提高多雷达多目标航迹匹配时的准确度,对完成多目标空域分布、目标识别等突防效果分析评估具有重要价值。展开更多
基金Project supported by the China Postdoctoral Science Foundation(Grant No.2016M592115)the Jiangxi Postdoctoral Foundation,China(Grant No.2015KY12)+1 种基金the Fund from the Jiangxi Provincial Education Department,China(Grant No.150184)the Fund from Nanchang University,China(Grant No.CX2017006)
文摘In this paper, two types of silicon（Si） particles ball-milled from n-type Si wafers, respectively, with resistivity values of 1 Ω·cm and 0.001 Ω·cm are deposited with silver（Ag）. The Ag-deposited n-type 1-Ω·cm Si particles（nl-Ag） and Ag-deposited n-type 0.001-Ω·cm Si particles（n0.001-Ag） are separately used as an anode material to assemble coin cells,of which the electrochemical performances are investigated. For the matching of work function between n-type 1-Ω·cm Si（nl） and Ag, nl-Ag shows discharge specific capacity of up to 683 mAh·g^-1 at a current density of 8.4 A·g^-1, which is40% higher than that of n0.001-Ag. Furthermore, the resistivity of nl-Ag is lower than half that of n0.001-Ag. Due to the mismatch of work function between n-type 0.001-Ω·cm Si（n0.001） and Ag, the discharge specific capacity of n0.001-Ag is 250.2 mAh·g^-1 lower than that of nl-Ag after 100 cycles.
文摘This paper constructs a stochastic endogenous growth model through introducing into a matching function. We study the stochastic optimization problem of the workers and employers pursuing expectation discount effectiveness (income or profit) maximum in the service market. By using stochastic analysis methods and process, we analyze the relationship between the number of employment, wage and labor input under equilibrium level. Moreover we discuss the workers 'welfare, some helpful results are obtained.
文摘在进行多雷达多目标航迹匹配时,由于测元系统误差随跟踪距离传播,雷达测量精度下降,易出现航迹匹配错误的情况。针对该情况,应用多测元非线性融合模型,采用样条约束的误差模型最佳弹道估计(Error Model Best Estimation of Trajectory,EMBET)方法对雷达测元系统误差进行自校准,将利用欧几里得距离进行航迹匹配的传统方法改为利用精度较高的雷达测距作差比较,有效解决了多雷达航迹匹配时的门限阈值合理设置的难题。仿真结果证明算法有效适用,可极大地提高多雷达多目标航迹匹配时的准确度,对完成多目标空域分布、目标识别等突防效果分析评估具有重要价值。
