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, the cumulative mass loss of ZQMn12-8-3-2 was about 1/3 that of ZHMn55-3-1. The corrosion current density of ZQMn12-8-3-2 was less than that of ZHMn55-3-1 under both static and cavitaiton condition. The free-corrosion potentials of ZQMn12-8-3-2 and ZHMn55-3-1 were all shifted in positive direction under cavitation condition compared to static condition. In the total cumulative mass loss under......
with roundness error was calculated by applying Palmgren-Miner linear cumulative damage theory. The influence of inner and outer raceway roundness error on the performance of the CRBs... cumulative damage theory. Finally, the effects of the raceway roundness error on the rotation accuracy, load distribution, and fatigue life of CRBs were studied. 2 Computational model The raceway roundness......
and initial orientation of SRX grains during the isothermal annealing were investigated. The results show that SRX can be accelerated through high-density twins introduced by high cumulative strain... stage until it finally approaches the fully annealed value. At high cumulative strain, variation of HV proceeds earlier into the middle stage and then reaches a steady value while HV keeps dropping......
principle of generalized linear models(GLM) was used in risk assessment method. The cumulative occurrence probability of the risk was transformed into logistic form according to its level. The risk assessment regression model was founded based on the prior information of the samples taking the transformed cumulative probability as the linking function. Then every level’s cumulative occurrence......
analysis was used to calculate the equilibrium con-stants and the thermodynamic functions including the entropy and free energy changes,minimizing the errorsquare sum by a computer program.关键词:......
, and was 2.29 times of the kinetic constant sum of photocatalytic and thermal catalytic reaction.关键词:......
关于索道布塔最优化设计朱永昌昆明有色冶金设计研究院摘 要:本文提出了一个大型非线性规划问题"索道布塔最优化设计"的数学模型,采用SUMT 一外点法优化技术,取得较好效益.为矿山机械设计提供了一种索道布塔最优化技术,可节省钢材20%左右.文中论述了SUMT 一外点法的原理,并提出对罚函数定义加权处理如下:Fx(X,Mk)=W1*Fcx(X)+W2*Mk*sum from i=1 to m{min[Gxi(X),O]}2.本题的设计变量维数为50时,约束条件数则为341.关键词:......
, and was 2.29 times of the kinetic constant sum of photocatalytic and thermal catalytic reaction.关键词:......
of Information Science and Engineering, Central South University, Changsha 410083, China) Abstract: Aiming at the optimization problem of maximizing the sum of bandwidth of spectrum resource and minimizing... maximizes the sum of bandwidth of spectrum resource, but also minimizes the number of used spectrum resource. Key words: cognitive wireless mesh networks; spectrum allocation; particle swarm optimization......
副产煤气系统为研究对象,利用混合整数线性规划法(mixed integer linear programming,MILP),以操作成本最小化为目标函数,以物料平衡,能量平衡,设备操作参数限制等为约束条件建立富余煤气优化调度模型.与前人的模型相比,对锅炉模型进行改进,不仅提高锅炉模型的调节精度,而且更接近实际情况.此外,为了研究煤气柜和锅炉稳定性,引入煤气柜总标准偏移量(sum of standard deviation volume,SSDV)惩罚因子和锅炉总改变量(sum of switching percentage,SSP)惩罚因子,并用帕雷托最优法理论确定出最佳的SSDV和SSP.结果表明,新的优化模型能很好地降低煤气柜和锅炉的波动,维持煤气系统的平稳运行.关键词:钢铁生产;副产煤气;能源利用率;整数线性规划;稳定性;优化;......
