Global Parametric Sufficient Optimality Conditions for Semi-infinite Discrete Minmax Fractional Programming Problems Involving Generalized （η,ρ）-invex Functions

In this paper,we discuss a large number of sets of global parametric sufficient optimality condi-tions under various gcneralized (η,ρ)-invexity assumptions for a semi-infinite minmax fractional programmingproblem.     

多发弹丸发射系统阀门电源及可编程发射控制器的研制

多发弹丸发射系统是我院20世纪90年代从俄罗斯引进的设备，用于发射弹丸的快阀门电源属于非标产品，其备件缺乏，维修困难。为保证HL-2A装置弹丸注入实验顺利进行，根据设计要求，研制了这套弹丸快阀电源和可编程发射控制器。它们之间的连接如图1所示。     

卫视资讯站

亚太2R（76．5°E）卫星，接收参数3780V 28060-组的Alpha、Sigma、LigTV等12个频道全部加密，有条件接收。3826H6507一组中新增EiEurope频道，免费接收。     

DC／DV

300D降价的消息无疑是这个秋天刚开始时最大的一个新闻，一直在800万像素阵营徘徊的消费者也不得不把目光转向了这款目前已经低过7000元的数码单反相机。     

SrHfO3和SrTiO3光学特性的第一性原理研究

用全电势线性缀加平面波法(FLAPW)计算了SrTiO3和SrHfO3的光学特性,即介电函数虚部ε2(ω)、光学吸收系数I(ω)和反射率R(ω).对它们光学特性进行了对比分析,给出了它们光学特性的差别,并进行了解释.计算的SrTiO3光学谱分别在4.4,7.4,8.3和23.6eV处出现峰值,且其在4.4eV处的峰值比较高而尖.计算结果与实验值符合得很好.     

Chiral Parameter of Transparent Films Containing Polymer Cholesteric Liquid Crystal-R

The transparent film containing a kind of polymer cholesteric liquid crystal-R was fabricated by the freezing method. The optical polarization response of the film was investigated by a self-manufactured apparatus and its optical rotatory dispersion was measured by a novel technique at the wavelength from 35Onto to 66Onto.At various wavelengths, the chiral parameter of the film has been obtained. The results show that the chiral parameter decreases as the wavelength increases. The maximum and minimum chiral parameters are 0.0343 at the wavelength of 350 nm and 0.0058 at the wavelength of 660 nm, respectively. The obtained data indicate that this kind of polymer cholesteric liquid crystal-R is a promising candidate host material for solid optical chiral waveguides.     

F-H实验仪与光栅光谱仪连用观测253.7nm谱线

通过F-H实验仪和光栅光谱仪的连用，可实时观测汞原子从6s6s1So态激发到6s6sSP1态，退激时，辐射出能量为4．9eV的光量子，其波长为253．7nm．     

金时空 injoy M300

在本期北京国际通信展专题中匆匆露了一面的金时空网机injoy M300终于被小编们拿到手啦，尽管其“金时空网机”的名字听起来还很陌生，便仍是货真价实的PPC智能电话哦——只不过常见的GSM/GPRS通讯模块换成了UT斯达康的PHS系统，小灵通的用家们也能享用到PPC智能手机丰富的多媒体功能了哟！     

秋之硕果

金秋时节，数码相机厂商如同丰收的农人，为消费者呈献上了累累硕果。新桃换旧符的速度越来越快。在大饱眼福的同时却仿佛多了些无从挑选的困惑。