关于Lipschitz区域上Schrdinger方程的不连续边界值问题

讨论Lipschitz区域上Schr dinger方程的不连续边界值问题及其研究进展 ,给出Lp(p >1)边值问题和Hp(p <1)边值问题的位势理论 .同时指出Besov Sobolev边值、Orlicz边值等需要进一步研究的问题 .     

一种新型的九进八出卫星中频切换开关

WS-4408九进八出卫星中频切换开关(题头图)具有使用方便、信号损耗低,切换信号迅速可靠的优点。开关体积为30cm×11cm×4cm,质量为0.72kg。     

硫化锌掺钴对电子结构和光学性质的影响

根据密度泛函理论对钴掺硫化锌周围的品格进行了结构优化,计算得到了钴杂质周围的晶体结构、电子态密度分布和吸收光谱.计算结果表明,由于Co原子掺入ZnS晶格常数减小,导致晶格畸变;带隙变窄;吸收峰展宽至更长波长区域.     

钟祥有线电视网络升级改造和区域联网规划及技术方案

钟祥有线电视网络升级改造和区域联网规划及技术方案湖北钟祥有线电视台范寿嗣１概述钟祥市地处长江中游江汉平原，地域４４８８平方公里，２４个乡、镇、场，人口１０６万。根据湖北省委经济发展战略部署，在长江流域建设以武汉为龙头的城市群。为适应经济建设的需要，钟...     

信息产业园区腾飞任重而道远

近日，信息产业部颁布并授牌了首批31个国家级电子信息产业园，这些产业园各自拥有突出区域产业的特色和优势，在不同产品领域内具有一定产业规模、技术水平和创新能力，区内优势企业比较集中，产业链相对完善，配套服务体系基本具备，主要经济技术指标处于国内领先地位，为高新产业园区明确了产业发展方向，赋予了更高的使命。     

TD系统设备完成首次技术比拼测漫游和切换

据悉，日前TD-SCDMA系统设备进行第一次技术比拼，主要测网络漫游切换。据透露，该次最新一轮网络漫游切换测试是3月27日开始的，TD-SCDMA产业链的4家网络设备核心企业大唐移动、鼎桥通信、中兴通讯和中国普天进行了历史上第一次技术大比拼，刚刚获得的测试结果显示，上述几大系统设备厂商在此方面悉数过关。     

Pseudo-Spin-Valve Trilayer Using Amorphous CoNbZr Layer： Giant Magnetoresistance, Domain Structures and Potentials for Spin-Electronic Devices

We propose a pseudo-spin-valve (PSV) trilayer using amorphous CoNbZr Mloy for soft magnetic layers. The giant magnetoresistance (GMR), domain structures and their variation upon thermal annealing are investigated. The GMR effect is not only stable up to 300℃ but also enhanced due to the improvement of the interfaces between Cu and magnetic layers. With high annealing temperature, the magnetoresistance (MR) ratio decreases rapidly as a result of serious layer interdiffusion. Dense stripe domains, which disappear after annealing at 300℃ for 1h, are observed in the sandwiched films. It is found that after patterning to elliptic stripe with aspect ratio of 6:1, the trilayers have a single domain and their MR ratio increases. The dynamic MR behaviour under an ac magnetic field indicates that the patterned stripes have good linear MR responses. Therefore, it is believed that the CoNbZr/Cu/Co PSV trilayers have strong potentials for spin-electronic devices including magnetic random access memory.     

Theory and Application of Characteristic Finite Element Domain Decomposition Procedures for Coupled System of Dynamics of Fluids in Porous Media

For a coupled system of multiplayer dynamics of fluids in porous media,the characteristic finiteelement domain decomposition procedures applicable to parallel arithmetic are put forward.Techniques suchas calculus of variations,domain decomposition,characteristic method,negative norm estimate,energy methodand the theory of prior estimates are adopted.Optimal order estimates in L~2 norm are derived for the error inthe approximate solution.