针对当前分析弹药消耗影响客观因素时,所反映的影响规律不够直观的问题,采用多元回归分析原理及模型,借鉴定量评估模型,结合弹药消耗量的数据,利用SPSS(Statistical Product and Service Solutions)软件弹药消耗量的影响因素进行多元回...针对当前分析弹药消耗影响客观因素时,所反映的影响规律不够直观的问题,采用多元回归分析原理及模型,借鉴定量评估模型,结合弹药消耗量的数据,利用SPSS(Statistical Product and Service Solutions)软件弹药消耗量的影响因素进行多元回归分析,建立了回归方程来预测弹药消耗量。结果表明,利用SPSS软件直接对影响弹药消耗量的因素进行回归分析,避免了复杂的推导与计算。通过各模型的预测对比,发现预测精度较高。展开更多
Product form queueing networks with string transitions have been studied in the literature as a model incorporating several features of the existing networks. That model includes state-dependent transition rates at th...Product form queueing networks with string transitions have been studied in the literature as a model incorporating several features of the existing networks. That model includes state-dependent transition rates at the cost of a restrictive form of the string transitions: First a sequence of nonnegative vectors is removed, and then a sequence of nonnegative vectors is added to the network state. Such a transition structure excludes, for example, networks with positive and negative signals recently studied in the literature. This paper extends the string transition networks to allow transitions of mixed vector additions and vector removals, and it includes assembly-transfer networks as well as networks with negative and positive signals as special cases. Assuming that the transition rates are independent of the network state except at the boundaries, we obtain general modifications for the string transition network under which it possesses a product form equilibrium distribution. The network is shown to satisfy a class of local balance as expressed by a set of traffic equations.展开更多
选取典型的河道淤泥作为研究对象,以不同配比的水泥和生石灰作为固化剂,对固化淤泥土进行击实试验和间接抗拉试验,通过统计产品与服务解决方案(Statistical Product and Service Solutions,SPSS)正交设计分析软件来探究固化剂配比变化...选取典型的河道淤泥作为研究对象,以不同配比的水泥和生石灰作为固化剂,对固化淤泥土进行击实试验和间接抗拉试验,通过统计产品与服务解决方案(Statistical Product and Service Solutions,SPSS)正交设计分析软件来探究固化剂配比变化对淤泥强度性能的影响。数据结果表明,含8%(全文均指质量比)水泥和12%生石灰的固化淤泥土的7 d无侧限抗压强度的代表值为0.9 MPa;在水泥含量保持不变的条件下,随着石灰含量的增加,28 d无侧限抗压强度没有明显增加。可见,固化淤泥土的无侧限抗压强度受水泥含量影响最大,即水泥含量越大,固化淤泥土的7 d和28 d无侧限抗压强度越大。展开更多
文摘针对当前分析弹药消耗影响客观因素时,所反映的影响规律不够直观的问题,采用多元回归分析原理及模型,借鉴定量评估模型,结合弹药消耗量的数据,利用SPSS(Statistical Product and Service Solutions)软件弹药消耗量的影响因素进行多元回归分析,建立了回归方程来预测弹药消耗量。结果表明,利用SPSS软件直接对影响弹药消耗量的因素进行回归分析,避免了复杂的推导与计算。通过各模型的预测对比,发现预测精度较高。
基金Technology Foundation STW, Applied Science Division of NWO the Technology Programme of the Ministry of Economic Affairs
文摘Product form queueing networks with string transitions have been studied in the literature as a model incorporating several features of the existing networks. That model includes state-dependent transition rates at the cost of a restrictive form of the string transitions: First a sequence of nonnegative vectors is removed, and then a sequence of nonnegative vectors is added to the network state. Such a transition structure excludes, for example, networks with positive and negative signals recently studied in the literature. This paper extends the string transition networks to allow transitions of mixed vector additions and vector removals, and it includes assembly-transfer networks as well as networks with negative and positive signals as special cases. Assuming that the transition rates are independent of the network state except at the boundaries, we obtain general modifications for the string transition network under which it possesses a product form equilibrium distribution. The network is shown to satisfy a class of local balance as expressed by a set of traffic equations.
文摘选取典型的河道淤泥作为研究对象,以不同配比的水泥和生石灰作为固化剂,对固化淤泥土进行击实试验和间接抗拉试验,通过统计产品与服务解决方案(Statistical Product and Service Solutions,SPSS)正交设计分析软件来探究固化剂配比变化对淤泥强度性能的影响。数据结果表明,含8%(全文均指质量比)水泥和12%生石灰的固化淤泥土的7 d无侧限抗压强度的代表值为0.9 MPa;在水泥含量保持不变的条件下,随着石灰含量的增加,28 d无侧限抗压强度没有明显增加。可见,固化淤泥土的无侧限抗压强度受水泥含量影响最大,即水泥含量越大,固化淤泥土的7 d和28 d无侧限抗压强度越大。
