基于模型的FLIR图像的多分辨率分割方法

针对低对比度前视红外（ＦＬＩＲ）图像分割问题的特点，将多分辨率图像处理技术与基于模型的前视红外图像分割方法结合起来，提出了基于模型的ＦＬＩＲ图像的多分辨率分割方法．首先建立一金字塔结构的多分辨率图像集，然后在每一固定分辨率级别上使用基于模型的ＦＬＩＲ图像分割方法，并用低分辨率上的分割结果修正高分辨率上迭代的初始概率，最后在原ＦＬＩＲ图像中得到分割结果．该方法能得到更为精确的目标分割结果，并大大减小背景对分割图像的干扰，同时还加快了选代的收敛速度．对实际红外目标图像的分割结果证实了本算法的有效性．     

气动激光器非平衡喷管流的数值模拟

利用两步ＭａｃＣｏｒｍａｃｋ显示格式对气动激光器喷管内的平衡、非平衡流动进行了研究．算例表明，该差分格式具有高效、简易、易收敛的特点，适用于拟一维喷管内平衡、非平衡流计算．在二振型二温度弛豫模型及典型ＣＯ２－Ｎ２－Ｈ２Ｏ组分条件下，对弛豫时间的实验数据进行了综合整理及分析，在此基础上，研究了弛豫时间对计算结果的影响     

惯量松驰因子的一个数值试验

研究了惯量松驰因子对ＳＩＭＰＬＥ算法收敛性能的影响，通过实例，找到了影响该项性能的最佳惯量松驰参数。     

二次凸规划的迭代解

线性互补问题的投影Jacobi松弛算法应用于求解不等式约束的二次规划问题,对称半正定的二次规划问题由K-T条件可以转化为P_0-矩阵的非对称线性互补问题(LCP),通过求解带扰动项的P-矩阵的非对称线性互补问题得到二次规划的最优解。最后给出一些数值结果。     

2D Hubbard模型正常态的NMR研究

从Zou-Anderson有效哈密顿量出发，研究正常态下高温超导材料CuO2平面Cu^2 核自旋驰豫问题，假设Spinon与铜核自旋之间存在一超精细耦合作用。计算了各种掺下核自旋驰豫率1／T1与温度T的关系。     

受多个位移和应力约束时弹性连杆机构截面参数的优化设计

本文将最佳准则方法和双因子算法相结合,对受多个位移约束和应力约束的弹性连杆机构截面参数的优化设计问题进行了研究,给出了相应的设计递推公式。并讨论了双因子的取值范围。     

Liquid fragility——A key togoing deep into materials of glassy states

“Liquid fragility“ is a concept that has been widely used in the investigation on the glass community,though it was presented less than two decades ago. The concept enables the comparison between the glass-forming liquids with different dynamic characters by using a general criterion, in which the temperature scale is reduced by the glass transition temperature. In order to illuminate the significance of the concept in the fields of the glass transition,structural relaxation process and the structure of supercooled liquids, the accomplished progress and the faced challenges are summarized from different aspects such as on the correlation between dynamics and thermodynamic characters of condensed matters, on the energy landscape, on the nonexponential relaxation and on the theoretical model of microstructure and medium-range order. The tendency of investigation in “liquid fragility“ is also evaluated.     

Study on the viscoelastic behavior of SEEPS block copolymer based on a modified BSW model

Studies on the viscoelastic behavior of styrene[ethylene-（ethylene-propylene）] -styrene block copolymer （SEEPS） were carried out, and some characteristic viscoelastic parameters were calculated. The longest relaxation time was obtained through simulating the relaxation spectrum on the basis of a modified Baumgaertel-SchausbergerWinter （mBSW） model. The results revealed that there exists a “second plateau” in the low frequency region of the master curves. The reason for this phenomenon is attributed to the entanglement of macromolecular chains. It is suggested that the hard blocks, polystyrene, act as entanglement points, resulting in a topology restraint to the movement of macromolecular chains. Meanwhile, it is found that the horizontal shift factors （aT） vs temperature in the master curve could be fitted to the WiUiams-Landel-Ferry （WLF） equation and Arrhenius equation respectively and the flow activation energy （Ea） is 127.88 kJ/mol. In addition, the plateau modulus （GN） and entanglement molecule weight （Me） were calculated.     

Belousov-Zhabotinsky反应修正的俄勒岗模型的弛豫振荡的渐近解

应用奇微扰理论得到了Belousov-Zhabotinsky振荡反应的俄勒岗模型约化的两变量形式的修正模型,给出了该模型的弛豫振荡的渐近解及其振荡周期.     

简约粒子群优化算法

针对全局版粒子群的早熟和局部版粒子群的最优位置信息利用率低的问题，提出简约粒子群算法．该算法使用速度松弛迭代策略，使粒子不必频繁更新速度，当粒子速度有利于适应度进一步提高时，就在下一个迭代周期内维持该速度，这有利于提高良好速度信息的利用率，减小算法的计算量，加快运算的收敛速度．同时，利用精英集团策略，使多个最优位置信息在种群内充分共享，有效地控制了种群多样性，避免了早熟现象．在典型标准测试函数上进行了全局、局部版惯性因子粒子群和全局、局部版约束因子粒子群测试比较，结果表明简约粒子群算法具有更强的寻优能力和更高的稳定性，且计算量也比较小．