基于解耦差分泽尼克待定系数法的二维横向剪切波面重建算法

横向剪切干涉术是一种自参考干涉计量技术,其原理是被检测波前与其自身被剪开的波前之间在重叠范围内相干涉,由干涉图得到两相互剪切波前的波前差,通过波面重建算法得到待测波面.在波面重建算法中,泽尼克待定系数法是其中的一种.分析了横向剪切干涉技术的测量原理;提出了一种新的基于解耦差分泽尼克待定系数法的二维横向剪切波面重建算法....     

Electroweak symmetry breaking and beyond the Standard Model physics — A review

In this talk, I shall first discuss the Standard Model Higgs mechanism and then highlight some of its deficiencies making a case for the need to go beyond the Standard Model (BSM). The BSM tour will be guided by symmetry arguments. I shall pick up four specific BSM scenarios, namely, supersymmetry, little Higgs, gauge-Higgs unification, and the Higgsless approach. The discussion will be confined mainly on their electroweak symmetry breaking aspects.      

基于均值漂移和模糊积分融合的高光谱图像分割

针对高光谱图像的特殊性,给出了一种基于均值漂移和模糊积分融合的高光谱图像分割算法。依据高光谱图像各波段间高度的相关性将其分为若干组,通过主成分分析对各波段子集进行降维。在此基础上,采用均值漂移算法计算各波段子集图像的聚类中心进而实现分割,再利用模糊积分融合各波段子集的分割结果。仿真结果证明了该算法的有效性。     

String cloud and domain walls with quark matter for a higher dimensional FRW universe in self creation cosmology

In this study, we research a higher dimensional flat Friedmann-Robertson-Walker(FRW) universe in Barber's second theory when strange quark matter(SQM) and normal matter(NM) are attached to the string cloud and domain walls. We obtain zero string tension density for this model. We obtain dust quark matter solutions. This result agrees with Kiran and Reddy, Krori et al, Sahoo and Mishra and Reddy. In our solutions the quark matter transforms to other particles over time. We also obtain two different solutions for domain walls with quark and normal matters by using a deceleration parameter. Also, the features of the obtained solutions are discussed and some physical and kinematical quantities are generalized and discussed. Our results are consistent with Yilmaz, Adcox et al and Back et al in four and five dimensions.     

Multifractality of nonlinear iterative processes

The Havlin-Bunde multifractal hypothesis [Physica D 38:184 (1989)] is expanded (in the form of the dimension-invariance approach) to nonlinear iterative (recursion) processes such as dielectric breakdown, phase transitions from periodic attractors to chaos, and cascades in turbulence. Comparison with model and laboratory data of different authors shows that for strong nonlinearity the dimension invariance is broken     

基于ZBLANⅩⅣPr,Yb频率上转换发光的三维立体显示

本文对利用ZBLANⅩⅣPr,Yb频率上转换发光的三维立体显示做了研究,探讨了其中的一些物理问题.在实验中,我们利用Yb³⁺离子敏化的方法提高Pr³⁺的上转换发光效率;通过降低能引起单频上转换发光的激光强度来提高寻址点和非寻址点在显示过程中的对比度.     

动力破碎分形和加载的关系

 应用由Grady和Kipp推广的Mott公式，导出了物体破碎碎块的分形公式，求出了分形维数，然后将此公式和加载及加载时间联系起来，阐明了分形维数的物理本质。     

高精度光学对准测量装置的设计

设计了一套光学对准测量装置,该装置主要由面阵CCD相机、光学镜头、图像处理模块、LED红光光源、球面反光镜组成。介绍了测量原理,测量目标采用等腰三角形排列,通过面阵CCD对目标所反射的图像进行采集,由图像处理模块对该图像进行实时处理,能够同时得到X、Y、Z以及旋转角度等四维坐标数据。推导了光斑图像坐标和被测平面距离等计算公式,并进行了对准精度分析。结果表明,该装置位置误差〈1mm,角度误差为0．24°,实现了高精度、自动、快速对准测量。