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Firstly, the thesis introduced the development of VOD, the background and meaning of the program, then the author introduced the associated technology, mainly including the feature of multimedia, video compression technology and the protocols SCTP and RTP. Considering the ambulant of host , fluctuation of bandwidth,high error rate data in wireless networks ,the author proposed some QoS strategy in the wireless networks such as RTP/SCTP protocol stack , connection control of the server, two buffers in the client end point.,TFC congestion control algorithms ,etc. Based these strategies, the team members gives the software and hardware solution of the wireless video-on-demand system and gives the main modules design of the software system. The system adopted the C/S structure including two parts: server and client ,using the Mpeg-2 which is apporiate for networks as the supported format. The thesis emphatically researches on the video-serving module of the server and the sink module, player module of client.

本文首先介绍了视频点播系统的发展现状、课题的研究背景和意义;接着对课题的相关技术进行概述主要包括了多媒体特点,压缩技术,传输协议SCTP以及RTP;针对无线环境的节点移动性,带宽波动性,数据错误率高等三大特点,作者研究设计了无线环境下的QoS策略:RTP/SCTP协议栈,服务器准入控制机制,客户端双缓冲区,TFRC拥塞控制机制等;在这些策略的基础上设计了系统的软硬件解决方案,并对软件体系结构的主要模块进行了设计,整个视频点播系统采用C/S结构,由服务器,客户端2个部分组成,使用适合网络传输的流媒体格式Mpeg-2作为系统支持的格式,文中重点研究了服务器的视频服务模块以及客户端的接收模块和播放器模块,并利用线程池技术对系统进行实现。

First, if you have an ambulation telephone by yourself.

首先,如果你自己有移动电话。

I would go to make amends, but I must defend our city.

我会为自己的行为作出补偿,但是,我们首先得保卫这座城市。

All these uses occurred first in American English, making the expression a true Americanism.

所有这些用法都首先出现在美国英语中,表达了一种真正的美国主义

First, the researchers mixed some of these cells with antigens found in the amino acid.

首先,研究人员把这类细胞和在氨基酸中发现的抗原混合在一起

Methods: Firstly, we gave 20 patients alcohol sponge bath; 30 minutes later, we injected compound aminopyrine.

首先对20例高热病人给予酒精擦浴降温,30min后肌注复方氨基比林并观察降温效果。

"Then I will tell you," Dad said,"But first of all, you have to know one thing, Amir, bearded idiot who does not teach you anything of value."

"那我会告诉你,"爸爸说,"不过首先,你得知道一件事情,阿米尔,那些白痴大胡子不会教给你任何有价值的东西。"

On the morphological differentiation,by inducing of fetal calf serum,it wasshown that the cytotrophoblast cells underwent aggregation first,and the adjacentcytoplasm membranes became tightly contacted through desomosomes andcytoskeleton.Then the adjacent cytoplasm membranes disintegrated fragmentallyto form fusion pore-like structure.Finally the multinuclear cells formed and inwhich the intercellular desmosomes disappeared.Immunocytochemical stainingfurther demonstrated that the formation of syncytium was through cell membranefusion rather than the amitosis process.

细胞形态分化的研究结果表明:早孕胎盘来源的细胞滋养层细胞在血清诱导下,首先发生聚集,并通过桥粒和细胞骨架使相邻的细胞膜紧密接触;之后细胞膜发生片段断裂,形成融合孔样结构;细胞间桥粒消失,最终形成多核的合体细胞;免疫细胞化学分析进一步证实合体化是通过细胞膜融合而非无丝分裂(amitosis即细胞核分裂而细胞质不分裂)实现的。

Then it discusses the significance of "integrity and amity" as one of end-values for building a harmonious society.

本文拟首先探讨经济体制改革与和谐社会的关系,从经济体制改革的要求来理解和谐社会的提出。

The atomic resolved density of state shows that there is density of Ru on the HOMOs. All the density is localized on the ammine, which reveals that the excited electrons in the Ru complex are delocalized over the ammine ligand.

首先原子分辨的态密度显示HOMO上的密度主要在Ru上,LUMO 上的态密度在ammine上,这说明Ru上激发的电子会转移到ammine配体上。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。