基于SOA的多媒体信息发布平台的研究与设计

目前,多媒体信息发布从技术上已经实现多媒体信息在局域网、广域网、跨网段、3G无线等网络中的传播。当前现有的多媒体信息系统发布平台没有形成面向服务的、网络化、智能化的发布平台。针对上述问题,介绍了多媒体发布平台的发展应用领域以及SOA技术思想,分析了多媒体发布系统现状,提出了一种基于SOA的多媒体发布平台集成框架模型,并深入讨论了框架内的各个技术层面以及该框架的硬件系统架构。通过实例应用验证了基于SOA框架模型和集成方案的发布平台具有松耦合、跨平台、可重用、有效性等特点。     

多媒体网络教学系统的建立及在农业技术推广中的应用

多媒体网络教学系统开发需要经过确定课题、需求分析、总体设计、编写脚本、素材制作、程序设计、调试修改、发行推广等步骤。开发多媒体网络教学系统首选操作平台是Ｗｉｎｄｏｗｓ ＮＴ，音频创作工具有 Ｓｏｕｎｄ Ｅｄｉｔ，Ｓｏｕｎｄ Ｄｅｓｉｇｎ等；视频创作工具有Ｑｕｉｃｋ Ｔｉｍｅ，Ｖｉｄｅｏ Ｂｌａｓｔｅｒ等；静态图像工具有 Ｐｈｏｔｏｓｈｏｐ，Ｐｈｏｔｏｓｔｙｌｅｒ等。网络编辑软件工具常用的有 Ａｕｔｈｗａｒｅ，Ｆｌａｓｈ，Ｄｅｒａｍｗｅａｖｅｒ等。关键技术是多媒体信息的传输技术、多媒体信息的获取方法、多媒体信息的压缩与恢复技术。认为多媒体网络教学系统将成为农业技术推广中的重要手段，将使农业技术推广发生革命性变化。并详细介绍了在食用菌技术推广中一个多媒体网络教学系统的具体编制方法。     

对高职院校多媒体网络教学平台建设的思考

随着网络信息技术的不断提升,以网络为载体,建设多媒体教学环境逐渐成为现代职业教育中重要的教学方式之一。在现有的校内局域网和Internet网的基础上,通过网络数据库技术将各种多媒体信息数据组织起来,通过基于WEB的B/S网络教学管理软件实现多媒体信息的上传、下载以及浏览,从而建立起校内的多媒体网络教学应用平台,为实施多媒体网络教学提供了基础。校园网络教学平台是一个开放的交互的平台,为高等职业教育在教学上提供了网络空间,拓展了传统的教学模式。     

基于嵌入式WEB服务器的田间网络监视器的设计与实现

在对WEB技术、网络多媒体技术和嵌入式技术的研究基础上,设计了一个基于嵌入式WEB服务器的田间网络监视器,实现了实时农田多媒体信息在WEB上的获取和传输.详细介绍了田间网络监视器的结构和通信协议的设计,并且利用在嵌入式WEB服务器上编写的Java Applet程序,实现了授权用户可以通过浏览器对田间网络监视器进行远程的控制和获取实时的农田多媒体信息.     

远程教育试卷系统的开发

电化教学领域中，基于网络的多媒体课件制作已成为实现远程教学模式的核心问题。为适应网络环境下远程教育的需要，以《微机原理与接口技术试卷生成系统》网络多媒体课件为例，结合CAI软件框架与相关网络技术，提出了实现多媒体信息网络发布的新想法与关键技术。     

基于Web的多媒体课件关键技术研究

多媒体技术发展在教育领域引起了一场教育方式的变革。通过网络来发布和传输多媒体课件成为多媒体课件发布的主要渠道。对基于Web的多媒体课件的关键技术(包括流媒体技术,超媒体技术,插件技术,音视频的同步技术,网络多媒体的开发平台等)进行了研究,并提出了一个基于Web的多媒体课件的解决方案。     

交互式网络教学平台的研究与实现

阐述了基于INTERNET的学校课程远程教育教学平台的设计思想,详细介绍了运用ASP和SQL SERVER等技术构建网络教学平台的具体方法.基于网络的教育多媒体信息资源的管理与发布系统为教师提供了更好的教学方式,其开发主要包括后台数据库的建立和管理维护以及前端应用程序的开发两个方面.对于前者要求建立起一个完整性强、一致性好、安全性高的数据库,而对于后者则要求具有应用程序功能完备,使用方便等特点.给出运用ASP技术实现网站的动态访问、数据库动态访问和课件在线更新、开发使用组件上传各类课件资源的功能,建立W eb界面的后台管理系统的具体过程和方法.完成的教学平台具有网上课件发布、出题组卷、批改练习,观看课件演播、视频课堂、讨论答疑并在网上进行实时测试和练习及网上交谈的功能,便于教师和学生操作和交流,很好地实现了网络远程教学的交互性.     

对多媒体信息服务质量的分析研究

对基于网络化的多媒体信息处理的现状和复杂性进行了全面深入的分析和论述,指出了通过开发通用多媒体终端的策略来解决目前网络化处理多媒体信息中的服务质量的诸多问题:带宽、延迟、抖动和业务损耗等,可促使多媒体实时处理信息的服务质量得到明显改善.     

网络信息发布管理平台的设计

为了向公众传递信息,本文介绍了一种网络信息发布管理平台,本设计方案采用控制平台和内容分离的网络模式。该模式扩容性强,服务器控制嵌入式终端时无终端数量的限制,可根据不同需求增加嵌入式终端数量,通过嵌入式终端,采用多线程技术,在Internet互联网中,实现了对播放内容、播放时间、播放次数、设备管理、终端状态等统一融合的远程数字化管理控制,方便、快捷地将多媒体信息发布到世界各地。     

关于创建基于Intranet的多媒体素材管理系统的探讨

多媒体素材库是远程教学传统资源数字化的存储媒体,实质上也是教师、学生的教学和学习资源中心.多媒体素材库必须有着强大的多媒体信息存储、检索与管理功能.以全文检索技术为核心,结合多媒体数据库技术和流媒体技术建设而成的多媒体素材库检索精度和效率非常高.其主要是为了方便教师进行多媒体课件的制作和多媒体电子教案的制作而建立.多媒体素材库中包含大量的多媒体信息,如各类教育教学所需的文字材料、图片资适料、图表资料,各种动画、声音、视频等.教师可以方便地从多媒体素材库中查找、调用各类素材进行多媒体课件的制作.还可以在上课时,通过网络直接调用显示某一图片、声音、动画、视频素材进行课堂教学.学生也可以通过网络,查阅、观看、下栽各类素材进行学习. 信息存储、检索与管理功能.以全文检索技术为核心,结合多媒体数据库技术和流媒体技术建设而成的多媒体素材库检索精度和效率非常高.其主要是为了方便教师进行多媒体课停的制作和多媒体电子教案的制作而建立.多媒体素材库中包含大量的多媒体信息,如各类教育教学所需的文字材料、图片资适料、图表资料,各种动画、声音、视频等.教师可以方便地从多媒体素材库中查找、调用各类素材进行多媒体课件的制作.还可以在上课时 通过网络直接调用显示某一图片、声音、动画、视频素材进行课堂教学.学生也可以通过网络,查阅、观看、下栽各类素材进行学习. 信息存储、检索与管理功能.以全文检索技术为核心,结合多媒体数据库技术和流媒体技术建设而成的     

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