查询词典 algorithms

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 results indicate that all of these algorithms can effectively ameliorate the traffic congestion on the freeway.

结果表明三种算法都能一定程度上改善快速路的交通拥挤。

According to this, algorithms of the MUD based on wavelet neural network are analytically discussed in the paper.

因此，本文对基于小波神经网络的多用户检测算法进行了分析研究。

Because of face patterns anfractuosity and destructibility, algorithms of face detection have a lot of disadvantages such as plentiful calculation,extraordinarily slow operation speed and very high error detection ratio under common circs.

人脸检测是一个极具挑战性的研究课题，由于人脸模式错综复杂、易受干扰，因而目前人脸检测算法一般都存在计算量大、速度慢、误报率高的缺点。

Figure 15 after the installation of projection angle control agencies, supplemented by the net back propagation algorithms, mobile robot path, projected position and hit the target or diagram (circular icon that hit the target location, location triangle icon that did not hit the target)...

图15 加装投射角控制机构后，并辅以经网之倒传递演算法则，机器人移动径，投射位置与命中目标物与否示意图(圆形图示位置表示命中目标物，三角形图示位置表示未命中目标物)。。。。

By correcting noise variance matrix of system state of constant turn model wit h maneuvering frequency coefficient and angular accelerˉ ation variance, the turning model set with different angular was d esigned, the model probability matrix was given. An interactive multiple model algorithms with adaptiveˉturning model w ere built.

通过机动频率系数和角加速度方差修正常速转弯模型的系统状态噪声方差矩阵，设计了不同角速率的转弯模型集，给出了相应模型的状态转移概率，建立了一种自适应转弯模型的交互多模型算法。

Simulation results demonstrate that our models and the corresponding algorithms are effective, the performance is improved by the polarity and the 1-order approximate model is blind to the angular distribution.

仿真结果证实了该模型和算法的有效性，表明了极化的引入对估计性能有很大提高，以及一阶近似模型对角度分布函数的盲性。

Rut there also exist some imperative problems which havent been resolved, such as the problem of optimizing network structure, the design of learning algorithms, the improvement of convergence speed and error precision, the decrease of anthropic factors and so on.

但是也存在一些亟待解决的问题，如网络结构的优化问题、学习算法的设计、收敛速度和误差精度的提高及人为因素的减少等方面。

People have proposed lots of feature extraction and classification algorithms and achieved great successful in the last few years, but there are also many disadvantages that restrict the applications to some extent. Rotation invariant and antinoise texture classification is a topic to be researched deeply.

近年来，人们提出了各种纹理分类算法，并取得了丰硕的成果，但是，目前大多数分类算法仍存在很多缺陷，在一定程度上制约了这些算法的应用，旋转不变和具有抗噪性的纹理分类更是有待深入研究的重要课题。

By combining APA and ACA algorithms, an adaptive channel and power allocation scheme is proposed.

通过联合APA和ACA算法，进一步提出了一个自适应信道和功率的分配方案。

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。