查询词典 networks

Based on the characteristics of the Ad Hoc networks, this paper proposes a Cluster-Based group key establishment scheme in Ad Hoc networks.

针对移动Ad Hoc网络的特点，提出了一个基于分簇的移动Ad Hoc网络组密钥建立方案。

The stability problems are analyzed and discussed. The optimal control problem is formulated to determine the necessary conditions for optimality in networks. Three theorems about the properties of the steady state-costate solution in Hamilton function are confirmed leading to the natrual meaning and the optimal policy which can be implemented in practice. In chapter Ⅴ, the methods for nonstationary simulation of computer networks are discussed.

第四章表述了计算机通信网动态特性研究的主要数字方法；提出了排队与随机存取机制、网络链路传输和节点分流的状态空间模型，并作了稳定性研究；应用最优控制理论得到网络最优控制的必要条件，证明了哈密尔顿函数协状态变量的稳定解性质，据此研究分析了网络最优控制的本质意义及实现途径，并给出计算及建模实例。

IEEE 802.11 networks are short range, high-bandwidth networks primarily developed for data.

IEEE 802.11标准网络的短距离，高带宽的网络，主要是发达国家的数据。

But two things are certain: Ubiquitous wireless and high-bandwidth data networks are going to get built, and the various smart devices required to provide access to these networks will soon be on the market.

但两件事是肯定的：无处不在的无线和高带宽的数据网络，是会得到兴建，各种智能设备须提供进入这些网络将很快在市场上。

The arguments on the necessary for quantized evaluation toward quality of services of multicast in Overlay networks are given. The concept of twodegree homeomorphism reduction multicast tree is introduced, extend Bowman's method for evaluating QoS of unicast dataflow by using stochastic process algebra is promoted, a modeling scheme is proposed for quantized evaluating QoS of concrete multicast instances in Overlay networks with simulation tool PEPA workbench.

论述了对Overlay网络中组播的服务质量进行量化评价的必要性，引入了组播树二度同胚约简的概念，推广了Bowman评价单播数据流服务质量的随机进程代数方法，提出用随机进程代数对Overlay网络中组播的服务质量进行评价的建模方案，并用PEPA workbench模拟工具针对具体的组播实例的服务质量进行了定量分析。

Along with the development of networks technology and the popularity of networks online teaching has already been an educational hotpot.

摘要随着网络技术的发展和网络的普及网络教学已经成为当前的一个教育热点。

Then, breifly introduced the arithmetic of the Multiple Linear Regression and artificial neural networks, built up the Multiple Linear Regression model and artificial neural networks model on this foundation, and forecast ice jam water level distinguishly under experiment condition and natural condition.

然后，简要地介绍了多元线性回归和人工神经网络的数学算法，在此基础上建立了多元线性回归模型和神经网络模型，并依此分别对试验条件下和天然条件下冰塞的水位进行预测。

The technology to support this approach is well-developed for local area networks, however, it is ill-suited to networks on the scale of the Internet and distributed environment.

现有的这种服务结构在局域网和集中式结构下已经得到了比较好的实现，但在广域网和分布式结构下尚无十分成熟产品。

BP neural networks have been widely used in mode recognizing, image processing, system control etc A lot of study has been done on the training algorithm of BP neural networks But there are still many short comings To complete the training of the weights of a BP neural network, the key problem is how to overcome the staying at the local minimum points as well as how to increase the training speed based on this condition This paper comes up w...

BP神经网络被广泛应用于分类模式识别、图像处理和系统控制等领域人们对BP网络算法进行了许多的研究，但尚有其不足之处为完成其权的训练，问题的关键在于如何避免陷入局部极小及在此前题下如何提高学习速度为此，就如何选取学习率η和动量矩α提出了改进方案，并应用于数字识别，得到了较为满意的结果

The neural networks fault diagnosis system based on intelligent technology is developed by use of neural networks'characteristic of nonlinear mapping to impend over aeroengine which is a complicated nonlinear ...

在此基础上，提出了航空发动机全包线内故障诊断的方法，并使用Visual C++编程语言，开发了故障诊断软件模块，可以实现全包线内的在线故障诊断功能。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。