低压功率VDMOS的结构设计研究

对功率集成电路中耐压为60V,电流容量为2．5A的VDMOS进行了设计和仿真。在理论计算的基础上,分析了外延参数和单胞尺寸结构的设计优化方法。通过ISETCAD器件仿真软件,得出相关数据和终端结构,进而借助L-edit完成最终版图结构。     

Effect of Terminal Modification on the Molecular Assembly and Mechanical Properties of Protein‐Based Block Copolymers

Accurate prediction and validation of the assembly of bioinspired peptide sequences into fibers with defined mechanical characteristics would aid significantly in designing and creating materials with desired properties. This process may also be utilized to provide insight into how the molecular architecture of many natural protein fibers is assembled. In this work, computational modeling and experimentation are used in tandem to determine how peptide terminal modification affects a fiber‐forming core domain. Modeling shows that increased terminal molecular weight and hydrophilicity improve peptide chain alignment under shearing conditions and promote consolidation of semicrystalline domains. Mechanical analysis shows acute improvements to strength and elasticity, but significantly reduced extensibility and overall toughness. These results highlight an important entropic function that terminal domains of fiber‐forming peptides exhibit as chain alignment promoters, which ultimately has notable consequences on the mechanical behavior of the final fiber products.     

Direct Iodination of Monosubstituted Aryl Acetylenes and Acetylenic Ketones

Monosubstituted acetylenes were iodinated to form iodoacetylenes under simple conditions. Reaction of aryl acetylenes with molecular iodine in the presence of 4‐dimethylaminopyridine (DMAP) gave the desired products in good to excellent yields. Iodination of aryl acetylenic ketones using K₂CO₃ as base was also described.     

Synthesis of Optically Pure Terminal Epoxide and 1,2‐Diol via Hydrolytic Kinetic Resolution Catalyzed by New Heterometallic Salen Complexes

The inactive chiral (salen)Co complex is easily activated by InCl₃ and TlCl₃ Lewis acids by forming heterometallic salen complexes. These complexes show very high catalytic activity for the synthesis of enantiomerically enriched terminal epoxides (>99% ee) and 1,2‐diols simultaneously via hydrolytic kinetic resolution. Strong synergistic effects of different Lewis acids, Co‐In and Co‐Tl, were exhibited in the catalytic process. The system described is very simple and efficient.     

国内互联网电视技术的专利分析

首先介绍了互联网电视的含义和互联网电视领域的发展状况,然后采用国家知识产权局的专利检索与服务系统的中国专利文摘数据库进行了专利检索,对互联网电视技术的特点、专利申请分布、申请人及专利发展趋势进行了详细的分析和深入的研究,基于互联网电视领域的专利申请特点,给出了国内互联网电视的发展建议.     

C-HPAV系统中EOC终端设备交换芯片的统一管理

介绍了基于C-HPAV系统的广电网络的双向改造的解决方案EPON+EoC,提出了现有技术在对终端设备中交换机的管理方面存在的问题,创新性地提出"基于MME的设备操作"的操作方式,并提出"基于扩展MME和终端代理Agent"的方式来解决现有技术的问题,从而实现在终端使用不同的交换芯片的一个混合型网络中互联互通的目的,极大地减少网络管理的负担并使整个网络更具扩展性。     

固网终端远程管理系统实现及部署方案

分析了固网终端远程管理系统在网络中所处的位置及功能,在原有人工装维流程的基础上,规划制定了RMS业务自动流程方案,并针对实现业务自动发放涉及到的方案实施步骤进行了论述。该系统的建立,可以实现FTTH业务的自动工单的流转和业务发放,减轻运维人员的工作强度,提高工作效率,满足FTTH终端大规模放装的管理和维护需要。     

基于多层分簇的北斗卫星导航系统拓扑结构与路由策略

针对网络拓扑动态变化和路由多重选择等问题,空间节点按其属性划分为3个不同的物理簇,各簇可按需要进行下一级子簇的划分,建立了基于多层分簇架构的动态网络拓扑演化模型,从MEO独立运行、GEO和MEO协同运行2个方面研究了导航系统的路由策略。设计了基于簇管理者、簇首和簇成员的三级信息传输与分发机制。通过分簇和子簇间边界节点的设置,实现了簇间的拓扑变化相互屏蔽、独立的组网路由策略和子簇间的信息交互,减小了网络管理和路由计算的复杂度。     

特种车辆驾驶员任务终端的设计

针对特种车辆信息化、数字化的提升,为驾驶员实时提供各种行驶与实验数据、同时提高精度和可靠性,设计实现了基于嵌入式操作系统VxWorks及其图形开发工具Zinc的特种车辆任务终端。论述了系统总体方案,以及系统的硬件、软件设计流程。设计实现了基于CAN总线的集车辆信息显示、视频辅助驾驶、定位导航于一体的驾驶员终端,并在样机上进行试验。结果显示,该系统运行稳定、可靠,能很好地满足特种车辆的设计要求。