基于NGN的多区域语音通信系统融合实施方案

随着语音通信技术的发展,传统PBX正在逐步被基于NGN的IPPBX系统所取代。IPPBX系统以VoIP技术为基础,在控制平台上融入了NGN技术,实现了信令流和媒体流的分离。本文基于高校的多个校区之间融合通信的需求背景,介绍了利用NGN技术实现多区域语音通信系统融合的解决方案,给出了项目的方案设计。     

云制造系统及其关键技术初探

云制造是当前先进制造领域研究的热点,云制造系统的应用对提高广大中小制造企业的综合竞争力有重要的意义。阐述了云制造模式实现的基础,分析说明了云制造系统的组成、运行原理、系统架构、构建云制造系统的关键技术,最后指出云制造系统的应用方向。     

云环境下离散制造业MES下料优化系统分析与设计

文章将下料优化的执行与企业私有云相结合,通过构建云数据中心模式为企业底层资源提供应用,对资源的分布式虚拟化计算、模型方法库的可扩展性等系统关键技术进行创新;定义了云环境下的下料优化系统的功能体系和系统架构,讨论了其实现过程中的关键问题,为下料过程优化和合理决策提供了重要支撑。     

嵌入式智能云药箱的设计

为方便远程监护,设计一款智能云药箱,可以实现语音和LED灯提醒老人服药、设定服药时间、控制出药数量和检测药物剩余量等功能.同时,这些数据信息会显示在液晶显示器上,并通过WiFi模块传送到云服务器.监护人员通过手机终端可以实时获取到老人服药的情况,发现异常可以及时处理.给出智能云药箱的硬件与软件设计实施方案,经过运行和测试,系统工作稳定,能完成所设计的各项功能.     

智能电视“云服务”平台的设计实现

文章主要介绍＂云＂时代智能电视＂云服务＂平台的功能特点、设计原理和技术实现方案。通过对服务器端和网络架构进行改造,目标达到千万注册用户的服务和运营。系统具备海量数据的数据库架构设计、数据仓库的支持和分布式集群支持,且在软件架构不变的前提下,能动态扩展硬件和分布式布点来适应日益增长大并发访问量。     

监控与预测的云资源优化配置

针对云环境下虚拟机资源在多数时间中处于闲置状态导致云资源利用率低的问题,设计一种云资源监控系统,并在云监控基础上提出一种基于自回归积分滑动平均(ARIMA)模型的动态负载预测与资源配置的方法.该方法利用虚拟机负载与配置的关系,通过预测负载情况,提前启动或者挂起虚拟机,提高云资源的利用率.研究结合OpenStack云环境提供的虚拟机,实现其下的云资源监控,预测和弹性分配功能.结果表明:该系统能准确预测虚拟机的需求量,所制定的资源弹性分配策略能够提高云资源的利用率,进一步节约成本.     

云录播系统在网络教育中的应用

本文通过分析云录播系统的概念及系统特点,进一步阐述了云录播系统在青海电大教学中的应用,进而分析了云录播系统的注意事项.说明云录播系统因基功能全面,在网络教育中使用性强等特点,将会在未来的开放教育中所到广泛的应用.     

移动云计算之Android餐饮服务系统开发

移动云计算之Android餐饮服务系统发挥Android系统的富有创造力和想象力的“云”应用开发,实现一套Android 客户端软件和完善的后台服务功能来完成餐饮服务功能.该系统主要包括后台数据库服务器、Web服务器、无线网络、Android前端等部分.客户端Android系统智能手机具有前端处理与计算能力,而且通过无线网络访问Web服务器.如果需要数据访问,则访问后台数据库.介绍了该系统系统架构的设计与搭建、技术选型、后台数据库的设计与实现、基本实用的餐饮服务功能的分析、设计与开发.     

基于功能服务端口信息实现动态域名解析系统的设计

分析了基于功能服务端口信息实现动态域名解析系统的工作原理和工作过程,该技术通过在数据库中增加功能服务端口号信息,自由实现内网服务器的动态域名解析服务和实现内网用户的多种服务和实现用户服务器的虚拟主机的功能,大大提高了它的灵活性,以适应各种平台和系统环境的变化.     

基于云渲染的三维BIM模型可视化技术研究

利用BIM(Building Information Modeling)技术进行工程建设的精细化管理需要实现三维BIM模型的在线展示及交互操作.传统的三维图形可视化技术虽然能够实现模型展示,但存在模型文件格式兼容性差,对终端设备硬件要求高,缺少必要的交互功能等问题.针对这些问题进行系统分析,提出了一套基于云渲染技术的三维BIM模型可视化解决方案.其中包括源模型文件轻量化转换技术,基于HOOPS的图形引擎开发技术,以及基于云渲染的大体量模型浏览器展示和交互技术.通过系统研发实现了主流建模软件Revit、Catia、Microstation、Tekla模型源文件的轻量化转换,以及基于云渲染的图形引擎系统,并在北京至张家口铁路工程建设项目中进行了验证.     

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