通信线路资源管理的GIS技术应用

主要介绍了通信线路资源管理系统现状,GIS技术与通信线路资源管理系统结合的必然性,GIS技术在通信线路资源管理系统中的作用,GIS技术与通信技术的集成。     

基于ComGIS的网络OSS资源管理系统的设计与实现

COM技术是新一代的组件式GIS的发展主流。在分析了当前网络资源管理软件开发过程中的关键技术后。结合广州市广电网络OSS资源管理系统的开发，阐述了组件式GIS在OSS系统的开发方式和实现过程。     

基于GIS技术的城市煤气管网信息系统探讨

阐述了GIS(地理信息系统)的概念、特点以及GIS技术应用的范围,分析了城市煤气管网资源与GIS技术的紧密相关特性.以城市煤气管理部门应用需求为基础,提出了基于GIS技术的城市煤气管网地理信息系统结构设计、数据库设计、专题空间地理信息数据设计、功能设计等.最后结合哈尔滨市煤气管网地理信息系统开发试验,展示了项目部分开发内容.     

基于“3S”技术森林资源智能管护系统的研究

阐述森林资源的意义,指明加强森林资源管理和保护的重要性;并应用现代信息技术,结合实验基地情况,开发出基于GPS和GIS技术的森林资源智能管护系统.通过GPS技术与GIS技术的双集成,实现了林业巡护智能系统,解决了考评森林资源巡查管护工作的难题.     

有线电视GIS技术的开发与应用

结合GIS应用技术，详细阐述了开发CATV-GIS的系统工具、功能模块及CATV-GIS在网络规划建设、资源管理、运行维护和安全传输中的应用。     

基于宽带光纤传送网的GIS管理系统的开发和应用

介绍了如何利用GIS技术结合数据库的应用对光纤资源进行更好地管理。     

网格技术在地理信息服务的应用研究

分析了GIS的最新含义已经由初期的地理信息系统．经过地理信息科学到如今的地理信息服务，阐述了地理信息服务在当今社会中的重要性．结合网格技术的发展现状和在GIS领域的应用，说明了网格技术的地学解释。对网格GIS的应用现状、存在问题和技术路线及其与Web GIS的区别与联系做了分析探讨，最后展望Grid GIS的研究方向。     

基于GIS技术的图形开发探讨

本介绍了GIS技术的特点，说明了基于GIS技术可以实现的图形开发的功能，并且根据C3I系统在图形显示上的需要，结合GIS技术进行系统界面开发设计的方法。     

数字校园与 GIS 应用探讨

从GIS发展概况及其支撑技术出发，通过与传统GIS应用系统进行比较，结合数字校园应用实例，系统地介绍了GIS应用软件的开发方法、系统结构及特点，并就体系结构、WebGIS等相关技术作了深入地探讨。     

基于WebGIS的三峡库区农业野生植物信息系统构建

文章以三峡库区农业野生植物为研究对象,建立基于MySQL语言的数据库,以计算机网络为基础,建立WebGIS网络平台体系。实现了库区农业野生植物资源信息的采集、分析、管理、决策与空间信息管理功能,直观、形象地显示资源的空间分布状况以及变化趋势等。文章实现了对三峡库区农业野生植物资源进行准确、高效、全面、规范的管理、发布与定期监测。     

Polarization of light scattered by vegetation

The potential information in polarization data of both single leaves and plant canopies is investigated. Measurements demonstrate the relationship between polarization data and various optical and botanical properties of both pieces of foliage and plant canopies. The results provide a basis for gaining fundamental understanding of how light is scattered and polarized by a plant canopy. The results show the polarized and nonpolarized portions of the light scattered by a remotely sensed ground scene potentially are independent sources of information for discriminating species and assessing the condition of plant canopies.     

Charge Modified Cowpea Mosaic Virus Particles for Templated Mineralization

Surface charge modification of wild‐type Cowpea mosaic virus, a plant virus, is sufficient to promote the templated mineralization of metal and metal oxide. Surface negative charge is increased by the chemical introduction of succinamate on surface lysine groups. The cobalt and iron oxide templated nanoparticles subsequently obtained are monodisperse with a diameter of ca. 32 nm. Further, the iron oxide‐CPMV nanoparticles can be readily decorated with thiol‐containing molecules.     

Establishment of Reliability Data for Power Plant Components by Means of an Information System

The increasing importance of safety and availability of power plant units demands more detailed and proven reliability data for plant components than operational experience could provide till now. In the Federal Republic of Germany an extensive collection of field data from a conventional power plant has been compiled since 1972. The authors give a survey on the information system processing these field data, in order to establish empirically tested reliability data for plant components.     

基于信道感知与监测的传感器网络传输参数自适应调整方法

针对预警系统中广域部署在偏远地区的传感器利用现有话音通信线路传输感知信息时,信道具有时变的特征,提出了一种基于信道感知与监测的传输参数自适应调整方法。该方法解决了连接线路在低信噪比下频繁掉线导致的传感器网络采集数据缺失与延时的问题。首先,在数据包传输期间,引入盲信噪比估计方法对信道质量进行感知,通过加权滑窗平均估计结果得到信道质量周期监测的观测值。然后根据卡尔曼滤波原理建立离散化的传输参数自适应调整模型,在保持链路连通状态下,根据信道质量优劣变化自适应地调整传输速率与功率。最后,实验表明,对于野外布设传感器网络的时变信道,该方法能有效保证信息传输的实时性与可靠性。      

木犀科植物花粉的扫描电镜研究

植物花粉的形态特征具有种属特异性。本文用扫描电子显微镜观察了木犀科(Oleaceae)的六属八种植物花粉的形态特征。结果表明,除迎春有个别四萌发沟外,其它花粉都是三沟型,外壁纹饰均为网状。但各种植物花粉的细微形态仍有明显差异。因此,用扫描电镜观察研究植物花粉的亚微形态特征,可为植物分类提供一些必要的形态依据。     

Design of an integrated database for a multiplant cablemanufacturer

The need to manage business operations effectively on an international scale is becoming critically important. Around the world firms are mobilizing to meet increasing global competition rapidly by redirecting, reorganizing, expanding, and relocating operations, or through joint ventures with other companies. One area that faces these challenges is the cables industry, wherein the need for integrated information systems covering various platforms of operations and adequate communication, is necessary for survival in the global market. An integrated information systems network has been designed for a large cable manufacturing facility, consisting of four plants, namely power cables plant, telecommunication cables plant, metal and plastics plant, and reel plant. This network covers the manufacturing, material management, customer orders, marketing and finance processes for each of the above named plants. Various processes have been integrated employing computer-aided systems engineering (CASE) tools and ORACLE relational database. The unified integrated information systems network has been realized employing optical rings, local area networks, and client-server architectures distributed across the various plants     

“5G+北斗”在抢险救援信息系统中的设计实现

针对在野外或城市复杂环境下开展抢险救援行动,救援信息获取不及时、指挥渠道不顺畅、救援进度掌握不全面等问题,结合使用5G通信技术和北斗导航定位技术,以便携式终端和可穿戴设备为信息交互载体,设计一套满足救援队员和指挥人员双方实际需求的轻量级指挥通信系统,以便及时反馈救援现场突发情况、统一指挥调度救援力量、全局共享救援信息和行动态势,有效支撑救援行动快速展开。     

Wild Bootstrap Tests

In this article, we have derived tests based on the wild bootstrap that allow checking for differences between two irregular signals observed with additive noise where the latter consists of independent but not necessarily identically distributed random variables. The signals are first denoised by kernel estimates and then compared by looking at the integrated squared difference. The bound between accepting and rejecting the hypothesis of equal signals are determined by the wild bootstrap and numerically calculated by Monte Carlo simulation. The test is applied to all pairwise rows and columns of two images, which results in an algorithm that allows detection of defects and additional information on their location and shape surface inspection problems. The idea and theory of the test may be straightforwardly extended to the direct comparison of two images. This is computationally less expensive than doing all the row- and columnwise tests, but it provides less information.     

光与雷达遥感协作及其农业应用

用遥感影像提取农作物信息是精细农业的基础.传统的光学遥感局限于大气无云的优质影像,而微波遥感在提取农作物信息方面尚未得到充分的利用.寻找一种能够克服这些局限的农作物遥感信息提取的方法是有意义的.探讨了一种光和雷达遥感协作的方法,并应用于土壤和植被信息的提取,验证其应用潜力.用Karam等(1992)的微波散射模型,并作了相应修改:1)考虑粗糙地表面后向散射;2)光学遥感作为模型变量直接输入.将这种协作方法应用到两个数据集的处理,一个来自亚利桑那Maricopa农业中心,一个来自日本国家农业-环境科学协会的Tsukuba试验基地.这些数据包括一些实测的土壤和植被的数据以及陆地卫星Landsat和欧洲遥感卫星ERS遥感影像.结果初步表明雷达影像和光学影像在提取土壤和植被信息时可以有效地结合起来,在特定地方的农业管理中有着较好的应用前景.     

僵尸网络活动调查分析

僵尸网络已经成为网络攻击者首选的攻击平台，用以发起分布式拒绝服务攻击、窃取敏感信息和发送垃圾邮件等，对公共互联网的正常运行和互联网用户的利益造成了严重的威胁。较大规模地发现和监测实际僵尸网络的活动行为并对其规律进行深入调查分析，是更为全面地监测僵尸网络和对其实施反制的必要前提。通过对所监测的1961个实际僵尸网络的活动情况进行了深入调查和分析，从中给出了僵尸网络数量增长情况、控制服务器分布、僵尸网络规模、被控主机分布以及僵尸网络各种攻击行为的分析结果。