信息通信调度资料管理系统研究

信息通信调度系统在电力系统中占据了重要地位,调度系统产生的数据包含了信息通信网络的运营状态、设备管理、调度电话资源等重要信息,如果能够结合数据挖掘技术对调度资料进行分析,可以得出一些传统手段不能发现的规律,从而为电力系统的调度和建设提供重要的参考依据。该文在现有的信息通信调度资料管理系统的基础上设计支持调度资料分析的信息通信资料管理系统。     

一种跨平台即时通信系统实现方案

即时通信系统在社交软件中应用广泛,特别是在移动互联网时代,随着移动终端设备的多样化,即时通信系统在移动平台扮演着重要的角色.基于这种背景,介绍利用HTTP协议、XMPP协议和SSH、DWR、ExtJS等框架,研究包括支持Android、iOS和网页浏览器多平台的即时通信系统的实现,给出了一套跨平台即时通信系统的设计方案.最后,通过大量实验表明,利用该方案实现的系统在可靠性和性能上都比较理想.     

谈数字调度系统在铁路通信中的应用

铁路区段调度通信系统是供行车调度员与其所管辖的指挥区段内各车站值班员之间进行业务联系的专用通信设备,是为铁路运输行业提供实时信息、实现铁路运输统一指挥的重要手段,因而调度通信在铁路运输生产中发挥着举足轻重的作用。本文对数字调度系统及在铁路通信中的应用进行探讨。     

基于Skype API的视频监控系统的设计与实现

近年来,视频监控系统在安全防范、信息获取、指挥调度等领域内获得越来越广泛的应用.本文提出了一种针对于诸如家庭、人员职守、设备状况等情况进行监控的实现方案,通过对Skype VoIP平台的API集成,在监控现场的微机上只需安装一个USB摄像头即可实现监控,该系统可支持远程用户对实时监控图像的观看,以及基于即时通信的监控端控制,具备了智能性、灵活性和可伸缩性.     

基于对等网的异构数据集成系统即时通信

在基于对等网的异构数据集成系统中,部署在各个异构数据对等体上的数据库系统具有分布性、独立性和异构性。对等体间的数据信息需要双向交互和即时通信,实现信息共享。鉴于对等网技术的动态发现和交互通信的优点,本文提出了将包装器和JXTA通信适配器相结合的即时通信系统,分为数据提供对等体、中继转发和数据请求对等体三部分,从而实现异构数据对等体间数据库信息的即时通信。     

融合通信在农特产品销售中的应用

融合通信技术及其发展 融合通信又称统一通信。它是指把计算机技术与传统通信技术融合为一体的新型通信模式，融合计算机网络与传统通信网络在一个平台上，实现电话、传真、数据传输、音视频会议、呼叫中心、即时通信等众多应用服务。     

基于分布式协作的高可靠性隧道通信

为解决隧道长度较长时,通信故障定位时间长、故障恢复速度慢的问题,借鉴智能网络中的控制信令技术,设计了一种具有高可靠性的分布式协议,通过自组织的协作方式实现故障的快速定位、恢复. 该方法通过数据库扩散实现邻接节点之间的资源信息交互,完成相邻节点之间的信息互通,构建同步的资源数据库,在基于表驱动的先验式路由方式下对故障进行定位和恢复. 结果表明,该方法能够实现快速行车调度、环控调度且具有处理速度快、开销低、网络资源利用率高等特点,能够满足快速轻载的宽带地铁综合业务通信系统的需求.     

天津南港工业区平战结合指挥调度共享平台的设计与实现

天津南港工业区平战结合指挥调度共享平台是基于软交换引擎,构建融合多种通信模式的生产指挥调度通信系统,平台集成了短信、彩信、语音等多种通信手段,涵盖手机、固定电话、专网电话、专业集群、公网电话、软电话等多种通信终端,做到对人员的统一调度管理,既能满足日常的服务功能,也能满足应急时候的调度功能,真正做到平战结合,平滑过渡。     

浅析计算机电子信息系统中信息传输控制技术

本文结合某工程的研制,针对信息传输过程中所涉及到新老系统兼顾、不同技术体制兼容、各种通信手段共存等特点,采用了信息传输相关控制策略及技术,通过构件化软件设计,综合利用多种有线与无线通信手段,研制出一种具有多功能应用、多协议支持、多路由自适应选择的网络通信传输控制软件,实现了各类信息平台之间的信息传输与分发控制.     

面向受限域的Web即时通信系统应用研究

为解决传统即时通信中存在信息传输费用较高、不能够与现有的信息系统集成、资源冗余和难以管理等问题,提出面向受限域的Web即时通信系统.阐述了受限域的Web即时通信系统体系结构和关键技术,重点介绍了网络管理、会话管理、用户管理、包的解析存储转发这四大关键技术模块的设计与实现.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the