Zero-crossing of a derivative of Gaussian filter is a well-known edge location criterion. Examples are the Laplacian, the second derivative in the gradient dire
The characteristics of coherent radiation produced by a cylindrical electron beam passing through a rectangular waveguide and linearly polarized wiggler are stu
摘 要:体育比赛通常为一天或者几天完成几个项目的比赛。队员对项目的比赛,有的正常发挥水平,有的低于平时水平很多,由于成功发挥或失败都会给队员在赛后产生各种心理活动,也会伴随着各种积极消极的情绪体验,因此,对队员赛后的心理状态一定要进行分析,并把存在的问题采取必要的措施加以调整,如果忽视了这个问题,那就有可能对下项或下面所有项目的比赛带来不良影响,甚至有的队员因第一项失误造以成下几项不战自溃的心理境
A model of random particles constructed by the operation of self-similarity in fractalgeometry is presented.The correlation function of the number density has b
神华黄骅港1期翻车机于1997年建造，设计年吞吐量为3000万t，投产之初就达到设计能力的55％。至2006年10月1日2期工程投入运营后，黄骅港设计吞吐能力达6000万t。
In this paper, the evaluation by running window smoothing is used for the digital processing of the polarization of geophysical ULF signals. The observed signal
针对浮式起重机必须满足恶劣作业环境下的安全与稳定特性,提出数字式重量传感器的设计方法,介绍了其内部结构及主要技术参数,阐述了该传感器在大型浮式起重机上的应用特性。
Accurate mutual coupling correction is necessary for an array antenna to reach ultra-low sidelobe level.If the mutual impedance or mutual coupling coefficient m
介绍了自动跟踪聚光太阳能热水器实验装置的结构、工作原理及工作过程,通过该实验装置,学生可较全面地了解PLC控制系统的组成与应用。该实验装置为学生进行PLC控制的实验、实
An isomorphism preserving Hamming distance between two algebraic geometry(AG)codes is presented to obtain the main parameters of Justesen’s algebraic geometry(