淄博广电总台7+1讯道数字分量转播车系统

本文以淄博广电总台7 1讯道数字分量转播车为例,浅谈该车的视频、音频系统以及设备配置情况.     

Growth of NaBi（WO4）2 Dendrite and Mechanism

The solid-liquid interface motion of NaBi（WO4）2 （NBWO） melt crystal growth is observed in an in situ system, in which the whole processes of interface transition from fiat interface and cellular to dendrite are visualized. The spacing of the dendrite under smaller temperature gradient turns out to be larger than that under larger temperature gradient, which is found to be sensitive to the temperature distribution. The mechanism of dendrite growth of NBWO is studied based on the model of the growth units of anion coordination polyhedra. The { 001} face has two apex links, so it shows higher stability and has high growth rate and forms the arm of dendrite, whereas the {010} face has only one apex link, and thus shows relative slower growth rate and firstly forms the branches.     

Hajek—Renyi不等式的推广及其应用

对Hajek-Renyi不等式进行了推广，利用推广的不等式给出了随机变量序列绝对平均意义下的强大数定律的一个条件．     

知识探勘的利器——丛集算法(4)

九.核心丛集法(kernel-based clustering) 核心丛集法的发展动力在于转换数据维度的困难性,依:Mercer理论可知,各维度所产生的困难性,可利用核心转换的方式加以克服.     

Laboratory Studies of the Stratified Rotating Flow Passing over an Isolated Obstacle

We study the flow of a density-stratified fluid passing over an isolated obstacle,using towing-tank experiments.Our special concern is the response of the flow with different Froude numbers passing over a three-dimensional obstacle.A series of experiments of the stratified rotating flow passing over an isolated obstacle was carried out with the towering -tank controlled by the similarity laws and dynamic non-dimension parameters.These experiments show that the Froude number is a very important parameter,and the lee wave and the eddy structure experiments show that the Froude number is a very important parameter,and the lee wave and the eddy structure appear simultaneously under an appropriate conditions.The effect of rotation on the lee wave is mainly to change wave amplitude,particularly to restrain the development of the lee wave and to promote the formation of an eddy.     

红光激发下掺Ho3+氟化物薄膜的上转换发光

利用激光脉冲沉淀法制备了稀土Ho~(3 )掺杂的氟化物薄膜。观测到处于薄膜中的Ho~(3 )离子在632.8nm红光激发下的上转换发射。这些上转换发射包括:~5S_2→~5I_7,~5F_4→~5I_7和~5S_2→~5I_8。     

目标自适应分割算法的研究

初步探讨和分析几种实际典型场景目标与背景的特征，提出相应的目标分割算法，并对几种方法加以融合。实际跟踪算法中，实现目标分割方法的自动转换．自动调整自适应分割门限及搜索方案．实验表明，该算法转换灵活，跟踪平稳。自适应能力强，抗干扰性能好．易于软件实现．     

Theme Party主题Party

据说诺基亚72系列3款新机的设计灵感源于上世纪30年代的旧上海，时尚魅惑而又略带怀旧色彩。而如今这场充满激情的派对已经上演，一样的装扮，不同的面孔，而都显得格外耀眼     

微波吸收法研究Mn,Cu掺杂对ZnS:Mn,Cu光生载流子复合过程的影响

采用微波吸收法，测量了ZnS:Mn,Cu粉末材料受到超短脉冲激光激发后，其光生电子和浅束缚态电子的衰减过程.发现Mn,Cu的浓度对导带电子的寿命有明显的影响，提高掺杂浓度会使光生电子的寿命大大缩短，还研究了掺杂浓度对光致发光强度的影响. 关键词： 发光材料 硫化锌 光电子 微波吸收技术     

Crystal Structure of Adduct 2-Phenyl-imidazo [ 4,5-f ] 1,10-phenanthroline Methanol

The structure of the title adduct comprises a phenanthroline derivative 2-phenyl-imidazo[4,5-f]1,10-phenanthroline and a methanol.The composition of the crystalline adduct was characterized as C19H12N4.CH3OH.It belongs to orthorhombic system,space group Pna21 with a=1.3693(4)nm,b=2.2988(7)nm,c=0.51338(15)nm,V=1.6160(8)nm^3.Z=4,and final R1=0.0423.wR2=0.1012 .Crystal structure shows that all the 19 carbon atoms and 4 nitrogen atoms are coplanar.The bond length data indicated that a very extensive conjugation system was formed.This conjugation makes the compound being a potentially excellent energy transformer used for luminescent materials.