一种移动无线网络分组公平调度算法

提出了一种支持时延限制的无线多媒体流公平调度算法。算法根据无线信道的服务质量，动态调整该信道连接的业务速率，并根据各个业务请求当时的时延因子的大小来公平地补偿和再分配带宽。仿真验证了算法的可行性和科学性。支持对时延敏感的流和对差错敏感的流，能做到区别补偿调度，满足各自的QoS需求。     

层次化Qos技术在现代化生活中的需求及应用

层次化QoS(Quality of Service)技术是按照业务分层模型,对业务进行逐级分层调度的技术。层次化Qos通过两级调度来实现。本文介绍了关于层次化Qos的关键技术及其在现代生活中的典型应用。     

基于5G的警务集群系统

通过分析集群通信系统沿专网与公网方向发展演进的技术趋势,结合公安调度需求研究了基于5G切片的警务集群系统体系结构,包括应用层、服务层、传输层、终端层、标准及管理体系和安全保障体系。在网络组网架构方面,通过超高可靠低时延通信(Ultra-reliable and Low Latency Communications,uRLLC)切片传输控制信号,增强型移动宽带(Enhanced Mobile Broadband,eMBB)切片传输业务内容,并提出集群业务软件中通信调度业务逻辑、综合业务适配和维护管理软件的模块组成,对其应用的协同算法、时延保证、安全可靠性和可扩展性等关键技术问题给出建议。基于多智能体控制模型提出多接入边缘计算(Multiple Access Edge Computing,MEC)服务器之间状态同步协调算法,为警务集群系统在5G技术体制下的进一步发展提供了基础。     

利用SRUDP的3G无线网络视频监控系统设计

为促进无线视频监控领域新技术的开发和应用,立足解决工程实际问题,提出了一种利用简 单可靠用户数据报协议(SRUDP)的3G无线网络视频监控系统的新型设计方案。系统可以对H 264视频流进行分层 模式的高效编码、压缩纠错和实时传输控制,并重新封装用户数据报协议(UDP)、SRUDP和IP 报头。系统采用滑 动窗口机制和重传机制来进行消息的收发同步和流量控制,可以实现任意用户终端对任意监 控点的有效监控。系统视频QoS的控制方式运用迭代算法,发送端可以根据反馈信息通过编 码器进行自适应调整速率,并参考SRUDP缓存进行参数修改,实现鲁棒控制。仿真实验表明 ,在3G网络环境下,基于SRUDP的视频应用在降低视频时延和包丢失率、减少网络拥塞、提 高传输速率和改善视频质量等方面具有明显的优越性。     

大型软件回归测试方法研究

程序被修改后，要保证程序能正常运行并且修改不能给程序质量带来任何负面影响，回归测试是必要的。大型软件系统结构复杂，构成要素多，如何做到不遗漏功能点同时降低软件回归测试代价，本文结合业务规则模型、修改影响分析和成本风险管理等技术提出了一种自动化回归测试方法。     

对商业银行表外金融工具风险的认识

自从全球金融危机以来，表外金融工具的会计处理、信息披露和风险控制被推到了风口浪尖上，很多金融机构，甚至国家机关认为公允价值计量加剧了金融资产的暴涨暴跌，助推了本次金融危机的发生。为此，美国会计准则委员会对金融工具会计准则进行了修改，国际会计准则委员会也正在酝酿对金融工具会计准则进行修改如何认识表外业务的风险特征，按照新会计准则要求夯实表外业务会计管理，加强表外业务风险控制，是我国商业很行需要面对的新课题。     

企业内部控制之浅见

在当下市场经济运作过程中，为了顺应时代的经济发展，展开企业内部控制体系的健全是必要的。所谓的内部控制就是采取一系列的措施、程序，进行企业操作行为的规范化及其系统化，保证其内部业务系统的循序渐进。在该文中。笔者就内部控制的会计控制模块及其管理控制模块展开分析，进行会计信息真实性的控制，满足现代化企业管理控制的需要。     

办公系统工作流引擎

办公业务已经不是简单的收发文流程,其业务流程越来越复杂,通过对办公业务的实际分析,本文提出了一个适用于办公业务的基于关系结构的工作流引擎的框架结构.文中深入讨论了采用关系结构来设计工作流引擎的原因,并详细地给出了相关的机构模型、信息模型和控制模型的设计原理以及具体的表示和实现方法.     

基于IP分布式MSC的CDMA2000系统A接口设计与实现

针对传统集中式移动交换中心(MSC)容量小、安全性低、不易扩展的不足,基于IP技术和软交换技术,提出了一种分布式MSC架构.在此架构下对A接口协议进行了分析并给出了基于IP的实现方案:兼顾TCP的可靠性和UDP的简洁性定义了承载A接口中的信令和业务的一个增强性UDP协议(EUDP).此外,也描述了分布式MSC负荷分担的选择原则:轮选、处理最近和资源最近;最后以8 kbit/s语音业务为例,对基于IP传输语音业务的带宽需求进行了简单分析.实践表明,该方案不仅提高了系统的经济性,也改善了网络容量扩展和新业务提供的灵活性.     

流动反应器内返混研究

以多釜串联模型为主体，采用示踪法，对不同搅拌速率和不同流体流量下四联釜流动反应器内的返混状况进行了测定，建立了该系统的数学模型。结果表明，搅拌速率及流体流量影响系统返混程度大小，在实际生产过程中，可以通过调节上述两个可控制的因素，对反应过程进行控制和调节，使反应向着最有利的方向发展。     

Brown＇s Blossom in Britain-China

The overall strategic relationship between U.K. and China is ＂better than ever＂, China- Britain relations have maintained good momentum, with increased high-level exchanges and the reinforcement of strategic mutual trust, with more room for growth in the future.     

Challenge and Opportunity Go Hand in Hand——What Global Economic Agitation Brings to the China's Economy?

Domino effects of the global finance agitation As the origin of the subprime crisis,US financial institutions lost USS45 billion last year,accounted for over half of the total US,EU & Japan loss.Since January 15th,Chtigroup released its financial statement of the 4th quarter,showing a net deficit of USS9.83 billion,which marked the hisoric high of its quarterly deficit.     

Sinosteel：Extraordinary Moves in Industry Chess

Among the Fortune 500 firms,more and more images from China emerge out.On the 2008 list,Sinosteel Corporation,a landmark group of China industries quietly squeezes into the candidate line.As the largest steel service ＆ trade enterprise,its sales reached at RMB 111.24 billion,with a year-on-year increase of 83.03 percent,and the profit grew by 180.03 percent.On the Sinosteel 2008 Work Meeting,the president Huang Tianwen uttered,＂In the coming year,we will work for US$20 billion sales,and look forward to getting a position in Fortune 500 firms for ourselves.＂     

Walk Through Unusual Five Years—— An Exhibitor＇s Canton Fair Course

When the 103rd Canton Fair is approaching, an old friend of Canton Fair, Li Ying from Jiangsu prov-ince recollected his past five years＇ experiences to the grand trade meeting. Each year is special, with some unforgettable memories colored by the year.     

Jean-Pierre Duprieu： Willing to Be A Legate of Sino-French Business

Estaing, former French president, Valery Giscard d＇Estaing attended Sino-French Economic Seminar held in Shanghai in early April and said that the world center has shifted from the west to the east with many European and US companies entering into Asia, and China has the ability to play an important role in the world stage. Estaing, naming himself＂French Confucian＂, then said in Chinese that a cook-group includes 10 people in ancient Chinese soldier system and the cook is in charge of cooking for them. And people who belong to the same cook are actually ＂Partners＂.     

China''''s Stock Market Wave

The annual meeting of the World Economy Forum was held in Davos,a little town in Switzerland,on January 23rd to the 27th this year,with the theme"the Power fo Collaborative Innovation",over 2500 celebrates from ture political and cconomic circles of more than 80 countries and challengred logether to talk about the future of the global economy in 2008,A Forum for the problems and challenges that face whole world,some of the keywords which drew attention during the event were:the U.S.subprime mortgage crisis,soaring energy prices,the economic slowdown in the U.S.ermerging economic bodies,authority funds and the general unpredictable nature of the global economy.     

Trade Promotion from Neighborhood

If you are considering to trade with companies in Japan or expanding your .business to Japan, we are ready to help from the very beginning.＂ You will find this greeting at the first sight on the Chinese website of Japan External Trade Organization （JETRO）. JETRO has committed itself in delivering highly efficient and quality services to meet the demand of internal and external customs including Japanese companies, hence winning a good reputation in the international trade arena. In recent years, with its priority in advancing business cooperation in South and East Asia, JETRO has made great achievement in promoting trade between China and Japan. Therefore, China＇s Foreign Trade interviewed Mr. Yoichi Maine, Deputy Director General of JETRO BEIJING.     

Auto Parts Market Potential Coming into Surface

Looking at the increasingly fierce competition in the world auto market. global automobile manufacturing industry, taking Europe, the U.S. and Japan as representatives, is gradually forming a new type of relationship, mutual cooperation between whole vehicle and parts manufacturers. We can clearly see that auto parts manufacturers have become independent from the whole vehicle manufacturing companies, which means that the former structure of auto industry has greatly changed, and a new relationship,     

Public Financial Expenditure——A Reflection of the Livelihood Improvement

In recent years.China's public finance put social construction high on the agenda and attaches more importance on livelihood insurance and improvement.The 2003-2007 public financial expenditure reflects a fact that the government isputting more emphasis on livelihood andissues concerning the people.     

Voices from the MPC and CPPCC

"Crucial for economic growth.energy utilization has its role in all economic sectors and every aspect of people's daily life.Now we are in dire need of a new profession,namely energy manager.We not only need to have passion and responsibility,but also a scientific approach to conserve energy and cut emissions.APpropriate legislation should be in place.and a special profession should be introduced to ensure the implementation of these laws and regulations."