随机右删失非参数回归模型的影响分析

将随机删失非参数固定设计回归模型转化为非参数回归模型进行研究;然后对此模型作了局部影响分析,得到计算影响矩阵及最大影响曲率方向的简洁公式;最后通过实例分析,验证了分析方法的有效性.     

某型飞机燃料油消耗模型的建立及诊断

为确定某型飞机的燃料油消耗量同其它因素之间的相关关系,借助SPSS统计分析软件,运用逐步回归分析方法,对某场站近三年燃料油消耗的实际数据进行研究.首先,运用逐步回归分析的方法,分别挑选出影响飞机在起飞滑跑、空中飞行及降落滑跑等三个阶段燃油消耗量的变量,并建立对应的回归模型.然后,对回归模型作统计诊断,检验模型的有效性及可能存在的异常点.最后,根据回归分析及统计诊断的结果,得出结论.     

超临界CO2中以PEG2000为模板制备TiO2/SiO2复合材料

超临界CO2;PEG;模板;TiO2/SiO2;复合材料     

地方二本院校应用物理学专业人才培养研究

为了解决地方性二本院校应用物理学专业在人才培养过程中的诸多问题,以六盘水师范学院应用物 理专业为例,通过对新形势下应用物理学的发展状况、学生入学情况,以及公司和企业人才需求进行分析. 结果表 明,为了培养出应用型高级专门人才,地方二本院校培养应用物理学专业人才亟需改革,增加实践课程比例,降低 课程难度,深化课程体系改革,修订教学大纲成为当今面临的主要问题     

Effects of polarons on static order hyperpolarizabilities polarizabilities and second of conjugated polymers

According to the one-dimensional tight-binding Su-Schrieffer-Heeger model, we have investigated the effects of charged polarons on the static polarizability, axx, and the second order hyperpolarizabilities, γxxxx, of conjugated polymers. Our results are consistent qualitatively with previous ab initio and semi-empirical calculations. The origin of the universal growth is discussed using a local-view formalism that is based on the local atomic charge derivatives. Furthermore, combining the Su Schrieffer-Heeger model and the extended Hubbard model, we have investigated systematically the effects of electron-electron interactions on αxx and γxxxx of charged polymer chains. For a fixed value of the nearest-neighbour interaction V, the values of αxx and γxxxx increase as the on-site Coulomb interaction U increases for U 〈 Uc and decrease with U for U 〉 Uc, where Uc is a critical value of U at which the static polarizability or the second order hypcrpolarizability reaches a maximal value of αxx or γxxxx. It is found that the effect of the e-e interaction on the value of αxx is dependent on the ratio between U and V for either a short or a long charged polymer. Whereas, that effect on the value of γxxxx is sensitive both to the ratio of U to V and to the size of the molecule.     

Effects of polarons on static polarizabilities and second order hyperpolarizabilities of conjugated polymers

According to the one-dimensional tight-binding Su-Schrieffer-Heeger model,we have investigated the effects of charged polarons on the static polarizability,α xx,and the second order hyperpolarizabilities,γ xxxx,of conjugated polymers.Our results are consistent qualitatively with previous ab initio and semi-empirical calculations.The origin of the universal growth is discussed using a local-view formalism that is based on the local atomic charge derivatives.Furthermore,combining the Su-Schrieffer-Heeger model and the extended Hubbard model,we have investigated systematically the effects of electron-electron interactions on α xx and γ xxxx of charged polymer chains.For a fixed value of the nearest-neighbour interaction V,the values of α xx and γ xxxx increase as the on-site Coulomb interaction U increases for U U c and decrease with U for U U c,where U c is a critical value of U at which the static polarizability or the second order hyperpolarizability reaches a maximal value of α max or γ max.It is found that the effect of the e-e interaction on the value of α xx is dependent on the ratio between U and V for either a short or a long charged polymer.Whereas,that effect on the value of γ xxxx is sensitive both to the ratio of U to V and to the size of the molecule.     

一类多对多随机格斗的获胜概率

为了计算出多对多随机格斗的获胜概率,首先推导出多对多随机格斗的状态转移速率,然后应用拉普拉斯变换的性质,分别计算出在不带搜索和带搜索两种情形下,三对二随机格斗中双方各自获胜概率的实用公式.     

随机删失非参数回归模型的离差度量

主要研究了随机删失非参数固定设计回归模型的离差度量.首先利用随机删失非参数回归模型的性质和生存分布的Kaplan-Meier乘积限估计,将原模型转化为非参数回归模型进行研究;然后对模型作了离差度量分析,得到了模型的离差度量序列;最后通过实例分析,验证了上述诊断方法的有效性.