流控制

The simulation is conducted for each control strategy in different wind situations. The results show the reliability and affectivity of the proposed control strategy.

针对每一种控制算法分别采用阶跃风速和紊流风速信号进行了仿真，仿真结果验证了控制算法的可靠性和有效性。

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。

The numerical results show that LQR could control the power flow transmission at the natural frequencies of the coupled system, but increase power transmission at the antiresonance frequencies. The position of the sensors in feedback control is important to the effect of the active isolation and the closedloop's stability.

研究结果表明：线性二次调节器可有效地控制系统共振时振动能量向基础的传递，但增加了系统反共振区域功率流的传递；在输出反馈控制中，从系统稳定性和可实现性上考虑，传感器应布置于隔振器与机器的连接点处。

The control volume integration was applied to deduce the discrete expressions of the convection-diffusion equations. The staggered grid and SIMPLE algorithm were introduced to deal with coupling between pressure and velocity, and then the numerical computation expressions of such variables as fluid flow velocity and pressure were deduced. Using the backward difference method and incremental theory to discretize the governing equations for fields of chemical reaction, material structure and chemorheology, the numerical computation expressions of variables such as the monomer conversion, average molecular weight and fluid viscosity were constructed.

应用控制容积积分法导出了对流—扩散方程的离散表达式，引入交错网格技术与SIMPLE算法，实现了耦合的压力场与速度场的分离式求解，推导得到了流体的流动速度、压力等物理量的数值计算式；采用向后差分方法和增量方法，实现了化学反应场、材料结构场、化学流变场控制方程的离散，获得了反应转化率、聚合物平均相对分子质量、流体黏度等物理量的数值计算式。

Many API functions are used in my paper in order to control the keyboard and the mouse of the remote computer, and also control its system ability. The monitor can control registry of the remote computer by TRegistry and obtain its system information by registry. The journal hook is also setted to record keyboards input information. I also make chat system and media play based on the stream. The server can capture screen images of remote computer and transported by the stream to the monitor, so we can monitor it in time.

论文应用了大量的Windows的API函数实现了控制远程计算机的鼠标、键盘，限制其系统功能；还通过读注册表获取远程计算机的系统信息，并利用Delphi提供的TRegistry类实现远程操作注册表；设置了日志钩子以记录并回放远程计算机的键盘操作：实现了基于&流&的网上聊天和媒体播放功能；通过复制屏幕图像并利用&流&传输屏幕图像信息实现了实时监控远程计算机的屏幕；还制作了文件管理系统，并利用自定义函数实现对非空目录的操作。

Based on the traffic model of a single node and on the system stability criterion, it is shown that the PD controller can regulate the source rate on the basis of the knowledge of buffer occupancy of the destination node in such a manner that the congestion-controlled network is asymptotically stable without oscillation in terms of the buffer occupancy of the destination node.

在单个节点的交通流的模型基础上，运用控制理论中系统稳定性分析方法，讨论如何利用信终端节点缓冲占有量的比例加微分的反馈形式来调节信源节点的能控交通流的输入速率，从而使被控网络节点的缓冲占有量趋于稳定。

We equaled the meshwork of micro channels to the resistance using the equivalent method of ion-solution and resistance. And coupling with the character of the two-dimensional separation solution and the laminar flow, we established a integrated equation of the electricity account and programmed with the software Matlab. And then we found the direction of the EOF and the range of the power control.

该方法采用离子溶液-电阻等效法，将芯片上的微通道网络等效为电阻网络，再利用基尔霍夫定律，结合MEKC-CZE二维分离时的溶液流向特点以及液流的层流特性，提出了一套完整的电流计算方程，并用Matlab软件进行编程，得到了各个阶段的电渗流的方向以及控制电压的范围。

Summary : Pressure relief valve and pressure reducing valve sometimes adjust to press out of order in the usage process , this is mainly because of block of damp finestra of the valve element or pilot valve .

溢流阀，减压阀这两种压力控制元件在液压设备中用处很广泛，溢流阀作用是调节系统压力，减压阀作用是减少某一支路的压力。

In the first part of this paper , the need for structured software quality metrication is argued , and a framework for measuring it is provided .

并证明了它们在描述程序数据流，控制流及二者相互关系上的应用；为解决这类问题提供了一种新的统一的处理方法。

Design and operation specifications of the converter set are put forward in light of the commission functions of it, and a exciting current control system with...

针对变流机组的使命功能提出了设计与使用要求，并研制了一套可靠性高、性能好的变流机组交流电机励磁控制系统。通过试验证明了理论分析的正确性

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷