广义凸非光滑规划的Mond－Weir对偶

建立了非光滑Lipschitz规划的两种Mond—Weir对偶形式，然后利用Clarke广义梯度定义的Lipschitz函数的广义凸性条件，证明了相应的弱对偶、强对偶和严格逆对偶定理，所得结果涵盖并推广了有关已知的对偶性定理。     

一类广义凸多目标变分控制问题的对偶模型的有效性的几个补充定理

本文考虑一类约束多目标变分控制问题,在[10]的基础上,目标函数和约束函数的广义(F,ρ)-凸性假设下,证明了原问题和对偶问题关于有效解的几个弱对偶定理和强对偶定理.本文的模型与结果推广了[7]中的相应模型与结果,同时推广了[10]的结果.     

一类广义（h，φ）-半无限规划的最优性条件

本文利用广义运算，定义一类不变凸、严格不变凸、不变伪凸、严格不变伪凸、不变拟凸等函数，然后研究它们的最优性条件。     

基于B-凸的新型广义凸多目标规划的对偶问题

基于B-凸性,在定义附加E,F映射条件下得到一类新的广义凸函数,称之为B-(E,F)-凸函数.在广义B-(E,F)-凸性条件下,研究了一类多目标规划问题的对偶问题,得到了相关结论.     

无穷维向量优化问题的弱Pareto最优解的充分条件

文【1】在无穷维空间中建立了可微多目标规划的最优性条件,并得到了一些有意义的结论．文章用p－不变凸来代替η－凸,得到了无穷维向量最优问题的弱pareto最优解的一些充分条件．     

一类向量优化问题的弱有效解的Kuhn-Tucker充分条件

在Banach空间中,利用几类广义不变凸的概念,获得了一类向量优化问题的弱有效解的Kuhn-Tucker型充分条件,改进和推广了已有文献中的一些相应结果.     

一类广义(h,ψ)-半无限规划的最优性条件

本文利用广义运算,定义一类不变凸、严格不变凸、不变伪凸、严格不变伪凸、不变拟凸等函数,然后研究它们的最优性条件.     

S-d-invexity条件下的多目标规划和凸规划问题

新定义了一种广义的d-invexity函数,(记为S-d-invex),进而考虑了一类非线性多目标规划问题,且通过引入Pareto最优解,凸集,和凸函数的概念,得到了凸规划问题的最优结果.     

若干可微广义凸模糊映射的特性及相互关系

由Buckley—Feuring定义的模糊可微性的概念,利用模糊映射的左右手函数讨论在可微条件下,伪凸模糊映射、严格拟凸模糊映射、强拟凸模糊映射和严格伪凸模糊映射的特点,深入讨论了四者之间的相互关系,分析了四种映射互相转化的条件及如何削减某些凸性规划条件和简化模糊规划问题。     

一类广义一致凸分式多目标规划的最优性条件

对一致凸函数进行推广，引入了几类新的一致(F，ψ，b)-凸函数概念，并证明了在这些新广义一致凸函数条件下，一类异分母分式多目标规划的一些最优性充分条件。     

一类二阶变系数线性微分方程的解法

研究了利用常数变易法求一类二阶变系数线性微分方程通解的解法,给出通解公式.     

集值映射优化问题解的存在性及解集性质

在实线性拓扑空间框架下,给出了无约束集值映射向量优化问题(UVP)解的存在性,并给出了其解集的一个结构性质:闭性.这是单值向集值的过渡.     

从改造后的B(ā)cklund变换出发找MKdV方程的新解

A modified version of the bilinear Backlund transformation for the MKdV equation was given, with which some new solutions of the MKdV equation are obtained. The approach used here is general and can be applied to other soliton equations.     

Optimization of band-notched UWB antenna using micro-genetic algorithm combined with FDTD

The micro-genetic algorithm(MGA)optimization combined with the finite-difference time-domain(FDTD)method is applied to design a band-notched ultra wide-band(UWB)antenna. A U-type slot on a stepped U-type UWB monopole is used to obtain the band-notched characteristic for 5 GHz wireless local area network(WLAN)band. The measured results show that voltage standing wave ration(VSWR)less than 2 covers 3.1-10.6 GHz operating band and VSWR more than 2 is within 5.150-5.825 GHz notched one with the highest value of 5.6. Agreement among the calculated, HFSS simulated and measured results validates the effectiveness of this MGA-FDTD method, which is efficient for UWB antennas design.     

具偏差变元的非线性差分不等式

研究了一类具偏差变元的非线性差分不等式解的一些性质,获得了对应差分方程的振动性的一些结果。     

用TAB（R，C）函数显示基本初等函数的一般方法

通过在TrueBASIC中对显示器显示范围的情况和基本初等函数的特征的分析，给出了显示基本初等函数图象编程的一般方法。     

几类环的对偶模等价性条件

本文利用对偶模的有关概念研究了Tfg-coherent环、coherent环、ITF环、IF环、T正则环、正则环及半单环的有关性质并得到了若干等价性判别条件。主要结论为：（1）R为左Tfg-coherent环扭类T中的左T一投射模的对偶是Tfg-平坦模（T平模）左投射模的对偶是Tfg一平坦模（T平模）。（2）若R的每个左循环模为自反模（reflexive）,则R为左T正则环R为右ITF环,且每个右T平模的子模是T平模每左模的对偶模是T平模。     

一类新二阶非线性微分方程的可积判据

先通过类比名的Bernoulli方程，提出了一类新二阶非线性微分方程，然后对它引进特征方程的概念，给出了一个实用的可积充分判据及其通解的积分表达式；在退化情形下，导出了经典的二阶常系数线性非齐次微分方程的通解表达式及二阶变系数线性齐次微分方程的一个新的可积类型。     

Numerical simulation of water mitigation effects on shock wave with SPH method

The water mitigation effect on the propagation of shock wave was investigated numerically. The traditional smoothed particle hydrodynamics (SPH) method was modified based on Riemann solution. The comparison of numerical results with the analytical solution indicated that the modified SPH method has more advantages than the traditional SPH method. Using the modified SPH algorithm, a series of one-dimensional planar wave propagation problems were investigated, focusing on the influence of the air-gap between the high-pressure air and water and the thickness of water. The numerical results showed that water mitigation effect is significant. Up to 60% shock wave pressure reduction could be achieved with the existence of water, and the shape of shock wave was also changed greatly. It is seemly that the small air-gap between the high-pressure air and water has more influence on water mitigation effect.     

New exact solutions of nonlinear differential-difference equations with symbolic computation

In this paper, the Toda equation and the discrete nonlinear Schrdinger equation with a saturable nonlinearity via the discrete ＂ （G′/G＂）-expansion method are researched. As a result, with the aid of the symbolic computation, new hyperbolic function solution and trigonometric function solution with parameters of the Toda equation are obtained. At the same time, new envelop hyperbolic function solution and envelop trigonometric function solution with parameters of the discrete nonlinear Schro¨dinger equation with a saturable nonlinearity are obtained. This method can be applied to other nonlinear differential-difference equations in mathematical physics.