基于MO网关的短消息系统网络分析

目前的短消息系统网络短消息中心接入号码不一致，且多套短消息中心（SMC）相互独立，不能互为补充。系统的可扩展性，可靠性存在着一定的缺陷。在短消息系统网络引入MO网关后，短消息中心接入号码可统一，同时实现短消息业务流量的均衡分布，使得多套短消息中心相互之间可互为热备份，大大地提高了系统的可扩展性和可靠性。     

短信平台支撑组件设计与开发

短信平台采用无线GSM(GlobalSystemforMobileCommunications)技术,通过Internet与GSM移动网络互连,实现Internet在线高效收发短信的功能。广泛应用于处理客户投诉、产品推广、信息收集与发布、电讯、教育等行业,是现今世界的热门技术之一。本文探讨了短信平台系统的核心技术,并设计开发了一套支撑组件,包括设置短消息格式、设置短消息中心号码、收发短消息等高可行性的低级接口。系统采用VC++.NET作为开发平台,比较好的实现了功能。     

基于GSM短消息测控系统的研究与实现

该系统是一个基于GSM短消息的测控系统.短消息经过GSM网络传输接入Internet网络,进而,由网络中的服务提供商(SP)接入社区局域网,网内采用低压电力线组网、终端89C51单片机控制方式,最终实现利用GSM短消息对家电的远程测控功能.     

利用UML对基于3G的车辆监控系统的建模

运用UML建模机制建立了3G车辆监控系统模型．系统由车载单元、监控中心和GSM通信网络三部分组成．系统运行机制为。车载GPS接收机确定车辆的具体位置并以手机短消息形式通过GSM网络发送到手机短消息中心。短消息中心以存储转发的方式发送给监控中心．通过基于UML的统一软件开发过程，可以将3G车辆监控系统各部件有机的整合为一个整体．并为解决系统升级难题提供了方便．     

图书馆移动信息服务系统分析与设计

针对Unicorn系统的数据封装性特点，使用Java语言、多线程和报表解析等技术，整合多种移动通信渠道，设计和开发出一套支持移动短消息和WAP双渠道交互的图书馆移动信息服务系统，满足了读者对高效性、个性化服务的需求。该系统具有好的独立性和可扩展性，为图书馆移动信息服务的深入开展提供了框架参考。     

SCDMA网络结构及其关键技术简介

SCDMA无线接入系统采用同步码分多址(SCDMA)无线接入技术,具有无线频谱利用率高、通信保密性好和低发射功率下较远的通信距离等技术优势。采用SCDMA无线接入系统构建的无线市话网络可以提供基本电信业务、补充业务、短消息服务以及各种基于低速数据传输的增值业务等各项电信业务功能。     

基于W78E54的宽带综合接入系统的告警板硬件设计

给出了宽带综合接入系统中告警板的硬件设计方案及其实现电路．告警板上的处理器接收来自接入系统监控板的告警信息，经过分析和处理，辨明已经设定的告警级别后给出相应的声、光告警信号报警，结果表明，该方案突出了模块化和标准化设计的优点，使系统具有较强的可靠性、兼容性、可维护性和可扩展性．     

利用UML对基于3G的车辆监控系统的建模

运用UML建模机制建立了3G车辆监控系统模型,系统由车载单元、监控中心和GSM通信网络三部分组成.系统运行机制为,车载GPS接收机确定车辆的具体位置并以手机短消息形式通过GSM网络发送到手机短消息中心,短消息中心以存储转发的方式发送给监控中心.通过基于UML的统一软件开发过程,可以将3G车辆监控系统各部件有机的整合为一个整体,并为解决系统升级难题提供了方便.     

电力通信多业务综合接入系统设计与实现

电力通信系统在电力安全生产中起着关键的作用,目前基于SDH和PDH的光纤传输网络,其设备组成结构复杂分散,通信网承载的业务种类和业务颗粒不断增加,广州蓄能水电厂提出了基于MASP的电力光纤接入网设计,建设一套通信多业务综合接入系统。该系统集SDH、PCM、数据网于一体,能够实现IP、TDM、ATM、PCM等多业务的接入、处理和传输,有效地提高电厂通信网络安全可靠性和通信资源利用效率。     

校园网系统平台的选择

对于校园网的建设而言，系统平台的选择是至关重要的，校园网系统平台的选择应能保证校园网络的安全性，可靠性，易用性，先进性与可扩展性，以便建立一个高性能的校园基础网络。     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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