实施双网覆盖提升移动数据业务品质

本文主要从运营角度,根据移动通信向数据业务方向发展的特点,结合几种通信技术设备对数据业务支持的差异性,从客户发展、建设成本、支持速度、未来升级等方面,利用理论数据和运营经验,通过对比,得出结论,数据专网＋（GSM或3G）双网覆盖,发挥各自长处,会大大提高移动数据业务的品质,促进信息化的大发展,进一步提高工作效率,改善人民生活质量。     

双网融合可视电话的业务寻址与交换技术

针对双网融合(PSTN+ADSL/IP)可视电话的技术特点、电信运营业务要求及其应用推广面临的问题,提出适合电信区域划分与并网运营的双网融合通信业务寻址与交换设计方案,其基于双网融合的特点及PSTN号码业务定位,采用区域链路传播策略,利用PSTN线路进行认证的软交换。实践证明该交换体系安全可控,支持灵活的电信运营模式。     

数字化变电站中双网控制策略

IEC制定的变电站内通信网络和系统标准体系（IEC 61850）中没有涉及双网通信、装置与操 作箱控制通信等内容,显然其不能满足大部分数字化变电站可靠运行的要求。通用面向对象的变 电站事件（GOOSE）直接基于ISO/IEC 8802-3以太网协议进行数据传输,有着较高的传输效率,是 数字化变电站的主要特点之一。文中描述的数字化变电站中双网控制策略是基于GOOSE协议的 双网控制策略,该策略不但使系统控制具有快速性和冗余性,也提高了系统控制的安全性和可靠 性,满足了数字化变电站各种控制应用需求。数字化变电站中双网控制策略可作为IEC 61850的 补充。     

基于IEC61850标准的变电站站控层双网通信的实现

结合变电站应用实践,针对IEC 61850变电站基于双星形网络架构的站控层网络,详细介绍了几种双网通信方案的技术细节,比较与分析了各种方案的利弊,给出了各种方案的适用条件,并提出了一种兼顾可靠性与运行性能、切实可行的站控层双网通信方案。     

计算机虚拟化桌面与双网设计的技术应用

随着云技术成为下一代信息数据处理的主要发展方向,使得虚拟化技术得到了快速的应用,虚拟化架构已经成为企业构建SOA(Service Oriented Architecture面向服务的架构)、ESB(Enterprise Service Bus企业服务总线)和DC(Data Center数据中心)的设计基础。在云计算、云平台和云服务的各种应用技术中,面向终端业务用户的虚拟化技术成为其中重要的应用领域,出现了诸如虚拟机工作站软件环境、瘦客户机、云终端等等不同的技术形式,本文重点介绍和分析云桌面与双网设计的实践体会。     

苹果非编的使用探讨

青海电视台的苹果网系统是由12台苹果MAC工作站组成、用Final cut pro6软件进行编辑制作的一个后期制作网,整个系统基于Xsan的网络结构,以UNIX为内核的苹果操作系统,对网络使用过程中出现的网络磁盘找不到、Final cut pro有时连mp3放不出声音等问题总结了使用心得。     

Self-Healable and Transparent Elastomers Based on Dual Reversible Networks

The fabrication of silicon elastomer with good mechanical properties and self-healing ability is still a challenge. Herein, a facile method to fabricate a transparent healable double-network (DN) elastomer by introducing polyborosiloxane (PBS) into self-healing polydimethylsiloxane (HPDMS) networks is demonstrated. Tensile testing shows that the mechanical properties of PBS and HPDMS are both improved. The DN elastomer shows high transparency across the visible spectrum with an average transmittance of 75%. Because of the breakage and reconstruction of reversible imine bonds and B O dative bonds, the elastomer exhibits excellent self-healing properties with a maximum healing efficiency of 98% at room temperature. Meanwhile, the elastomer can be repeatedly reprocessed with a recovery of 85% of virgin mechanical strengths. This work provides a new insight to design transparent, self-healing silicone elastomers with a simple and eco-friendly method.     

Rapid-Fabricated and Recoverable Dual-Network Hydrogel with Inherently Anti-Bacterial Abilities for Potential Adhesive Dressings

To satisfy the ever-accelerated demands for advanced engineering biomaterials with excellent physicochemical properties, injectable and recoverable dual-network (DN) hydrogels based on poly(l -lysine)-graft-4-hydroxyphenylacetic acid (PLL-g-HPA) and Aga are constructed by simply mixing PLL-g-HPA/HRP and PLL-g-HPA/H₂O₂ in Aga through enzyme-catalyzed cross-linkage of PLL-g-HPA and temperature-adjusted sol-gel transition of Aga. The recoverable and injectable performances of hydrogels are attributed to the reversible sol-gel transitional feature of Aga and enzymatically cross-linked reaction of PLL-g-HPA. DN hydrogels have fast and adjusted gelation time, connective pore structure, superior formability, and good biocompatibility. The helically structural Aga network endows the hydrogels with good mechanical strength and superior stability in extreme condition. Schiff-base effect between amino in skin tissues and carbonyl formed by the oxidation of phenol groups in hydrogel imparts the hydrogels to promising tissue attachment. Bursting pressure assay illustrates that the bursting pressure (34.5 ± 2.4 kPa) for 13.6% DN hydrogel is much higher than arterial blood pressure (16 kPa). The incorporated cationic PLL-g-HPA gives the hydrogels remarkable antibacterial ability, which effectively prevents the bacterial infection. In conclusion, the DN hydrogel with good cytocompatibility, inherently antibacterial ability, tissue adhesion, and excellent stability in extreme environment is probably able to become a promising candidate as potential wound dressings.     

双代号网络路径的矩阵查找法

针对双代号网络信息系统中特定的路径查询问题,提出了一种矩阵式快速搜索算法.该算法模拟人脑寻找路径的思维过程,首先针对实际问题建立基于先验知识库的双代号网络工序矩阵、关联矩阵与权数矩阵.在路径搜索过程中,利用知识库中的信息剪去不可能的搜索路径,构造出简化的查询路径,并给出通解,从而大大提高路径的搜索速度.最后,结合实例验证了该算法的实用性和快捷性.     

双网融合可视电话业务模式分析与架构设计

基于多媒体电话的智能网关是数字家庭的一种优选解决方案,其承载业务从基础的可视通信业务,扩展到互动电视、多媒体娱乐服务、数字家居、远程监控、泛业务应用等增值业务,本文探讨其多赢的商业模式,提出双网融合(PSTN+ADSL/IP)通信及其应用方案,着眼于双网协作、融合,分析其特点与优势,并给出项目策略及技术线路,设计基于双网融合协作通信交换体系的业务服务架构及SaaS实现模式、多媒体可视电话媒体传播架构及P2P关键技术方案。