数据流

Examinations of steady status and analysis of dynamic experiments have been conducted on Band-Tube evaporator and Parallel-Flow condenser using R134a refrigerant. The steady examination show that the model error was under the allowable error, The inlet mass and enthalpy disturb experiments indicate that the subsection model ,be good at reflecting the change of parameters of the heat exchanger, accord with the basic principle of thermodynamics theory and the actual work status.

在进行仿真试验时，以使用R134a作制冷剂的管带式蒸发器和平行流式冷凝器为对象，完成了稳态仿真计算、试验和动态仿真分析，稳态计算结果和试验数据对比表明，其误差在允许范围内；进口质量和焓值的扰动试验结果表明：本文所建的区段式换热器仿真模型，能很好的反映换热器性能参数的动态变化，与系统热动力学理论和冷凝器、蒸发器的实际工作过程基本一致。

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。

They will append the string representation of their respective data type to the stream.

他们将追加其各自的数据类型的字符串表示形式流。

The theory of function approximation is used to establish the transient model of thrust vectoring with the data calculated.

利用该程序计算了某矢量喷管在不同的压比、面积比和几何偏转角下的200多种三维有粘流场，获得了矢量喷管的性能数据。

The procedures of determining confined aquifer parameters by BP neural network were introduced...

为说明BP神经网络求含水层参数的原理，本文以文献数据给出了基于非稳定流抽水试验的BP神经网络求承压含水层参数的过程。

Simple RAM architecture is substituted by the combination of CAM and RAM for forming PID information table, by which the resource is saved and high speed performance is obtained. A "two step" algorithm of Program Clock Reference correction was proposed, which reduces the complexity of hardware design obviously and limites the PCR jitter in a small range. Based on the remuliplexer, thr...

该方案采用 CAM+ RAM组合代替简单的 RAM结构用于构造 PID信息表，在保证速度的基础上，大大节约了资源；提出了&两步法&PCR校正算法，在保证节目时钟基准校正精度的基础上，大大减小了硬件设计的复杂度；基于该再复用器，提出了 MPEG- 2传输流、纯数据、主控机插入等几种实用的数据插入方式，以适应不同的应用环境

The author develops a corresponding statistical analysis software to compensate the deficiencies of the current popular traffic analysis software in this regard. The software achieves the functions of highway traffic and OD survey data entry,statistical analysis of the traffic flow characteristics,the generation of cross flux,SQL query,OD matrix operations and so on, enhances the efficiency and quality of statistical analysis,provides the scientific decision-making of traffic planning,construction and management with a powerful data processing tool.

一种统计分析软件的开发弥补了当前流行的交通分析软件在这一方面的不足，实现了公路交通量及OD调查的数据输入、交通流特性的统计分析、断面流量的生成、SQL查询、OD矩阵的操作等功能，提高了统计分析工作的效率和质量，为交通规划、建设与管理的科学决策提供了有力的数据处理工具。

A new algorithm of discrimination between inrush currentand fault currentof transformer is brought forward based on self- correlation analysis,which is to calculate self- correlation coefficients of variant periods after analyzing the sam pling data and then discrim inate between inrush current and fault current by using the m agnitudes of the calculated coefficients.

提出一种利用数字信号处理中的相关函数的基本概念，对采样数据进行分析，计算采样数据在不同时段上的自相关系数，利用自相关系数的大小来区分变压器励磁涌流和内部故障差流的新方法。

Data streamed out to memory can be recirculated back into the pipeline as input data or read-back from the CPU.

输出到显存的流数据可以作为流水线输入数据循环使用，或者读回到 CPU 。

Firstly, the single-phase flow field of a typical NACA cascade was calculated and the predicted pressure coefficient has good agreement with the experimental data.

文中首先采用不同的壁面处理方法（标准壁面函数法和两层区域模型法）计算了一典型NACA叶栅内的单相流场，两种壁面处理方法得到的压力系数与实验数据符合很好，两层区域模型在前缘处的压力系数好于标准壁面函数法，与实验数据更接近。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。