查询词典 networks

ABSTRACT Over the last few years much attention has been paid to the development of the technologies for Community Antenna Television networks. New technologies that can be used to support data communication service over CATV networks are developed. The new Hybrid Fiber Coaxial technology is spreading out rapidly in CATV networks. The usage of fiber provides large bandwidth and thus enables some new services to be delivered along with television broadcast. The CATV networks are expected to support diverse traffic with various service requirements.

随着新技术的不断发展，人们希望能够利用有线电视网络提供新的业务，HFC技术在有线电视网络中的广泛使用使得有线电视网络的带宽增加，也使得有线电视网络除电视广播外还能够提供其他的服务，这些服务的服务质量要求各不相同，如：数据服务要求低的丢失率，对延时的要求较低；而语音服务可容忍一定的丢失，但对延时、延时抖动有严格的要求，因此需要开发新的协议。

In accordance with discrete, non-symmetry and time-delay feedback neural networks, we provide some theoretical criteria to judge the stability for designing the networks. On continuous feedback networks, we built an algorithm to estimate the convergence region. On the HNN feedback networks, an effective optimization algorithm based on the annealing strategy and the chaotic neural network is presented, and some disciplinary conclusions are provided to guide the selection of parameters. Simulation results on benchmark problems demonstrate that the performances of our algorithm are distinctly superior to those of the classic HNN based on gradient descend and stochastic optimization methods based on probabilistic distribution.

针对离散、非对称和时延等三种类型的动态反馈网络，给出了可用于网络设计的稳定性判别准则；针对连续动态反馈网络，建立了其收敛域估计的一个算法；针对以HNN模型描述的动态反馈网络，基于退火策略和混沌神经网络提出了一种高效的优化算法，建立了可用于指导参数选择的一些规律性结论，对典型算例的仿真研究显示，改进算法在各类性能上相对基于梯度下降的传统HNN模型和基于概率分布的随机优化算法，具有明显的优越性。

It has become one of the important tasks in the study on modern electric system. At first, this text has briefly introduced meanings, the current development and the main methods which the electric load forecasting are used. This paper aimed at the floatability which the load data had and the nature that neural networks model is easy to fall into part infinitesimal value and low iterative speed, this paper proposed a method based on neural networks and SVM. SVM can dispel the less summation and the larger single point errors of neural networks, and the neural networks could dispel the simplification of the model of the vector support machine.

本文首先介绍了电力系统负荷预测的意义、发展现状和主要方法；针对负荷数据具有浮动的特点以及神经网络模型算法容易陷入局部极小和迭代速度较慢的缺点，提出了一种基于神经网络和支持向量机的混合负荷预测方法，此方法能通过支持向量机消除神经网络的总和较小但单点误差较大的不利现象，而神经网络消除了支持向量机的模型简单问题。

Memory 1012 may include mass storage that is remotely located from the central processing unit 1002. The memory1012 preferably stores: an operating system 1016 that includes procedures for handling various basic system services and for performing hardware dependent tasks ;zea network communication module1018 that is used for connecting the system 1000 to other servers or computers via one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;zea system initialization module 1020 that initializes other modules and data structures stored in memory1012 required for the appropriate operation of system 1000

记忆1012可以包含海量存储从中央处理机1002远离找到。memory1012更可取地耐储藏：一操作系统1016那个包含过程触摸各种各样基本原理系统服务和表演硬件受抚养者任务；zea网络通讯module1018那个是使用相连系统1000向其他的服务器或者电脑经由一或更多通讯网络例如因特网其他的广域网局域网大都会地区网络和那样on；zea系统预置模数1020那个预置其他的模数和数据结构耐储藏在中记忆1012为系统1000的适合运作被要求

For the data set with noises, a regularization intropolation method is proposed according to regularization theory. The relation between the regularization intropolation method and radial basis function method is analysed and structure of regularization neural networks is proposed. RBF neural network is introduced by mortifying the regularization neural networks. Finally the approximation capacity of RBF neural networks is analysed. 4. A method of selecting the centers of hidden layer neurons of RBF neural networks is proposed.

首先从精确内插问题开始对RBF神经网络进行讨论，然后根据正则化理论提出了在数据集带有噪声的情况下的内插方法，并分析了这种内插方法和径向基函数方法之间的密切联系以及其对应的正则化神经网络结构，其次对正则化神经网络进行了修改，得到正则化神经网络的简化形式—RBF神经网络，最后分析了RBF神经网络的逼近性能。

There are three important structural features in complex networks: small-world effect, scale- free property and network's navigability. Typical models reflecting these features, respectively, are the Watts-Strogatz's model, the Barabási-Albert's model and the Kleinberg's model. Based on the typical models, a new model of growing and navigable networks is proposed, with the generated networks possessing all these features simultaneously. The results of navigation obtained by using a greedy algorithm on networks of the model are similar to, or even better than, that of the Kleinberg's model.

复杂网络具有3种重要的结构特性：小世界性、Scale-free性和可导航性，反映它们的经典模型是：Watts-Strogatz模型、Barabási-Alhert模型和Kleinberg模型为了全面地反映出这些特性，在经典网络模型的基础上提出了一个新的增长可导航网络模型，这个模型同时具有这3种重要特征，并且在这个网络模型上使用贪婪算法时，它与Kleinberg模型具有相同的导航效果，有时甚至更加优越。

The anastomosing occurred between the pleural superficial and the subpleural vascular networks on the capillary level or the precapillary level. The honeycomb vascular networks were also various in size and form at a low magnification. The venule connected with the pulmonary capillary networks directly at a high magnification. The single capillary networks were found in the alveolar septa. The longitudinal crests and dense round imprints of endothelial nuclei and the clear circular constrictions were found on the surface of the larger vessel in the lung parenchyma. The round imprints of endothelial nuclei also occurred on the subpleural venule and capillary.

胸膜面浅层的微血管与胸膜下微血管之间形成毛细血管水平或毛细血管前水平的吻合；低倍镜下肺实质内微血管网也呈现大小不等、形态各异的蜂窝状结构；高倍镜下肺泡毛细血管与微静脉之间联系紧密；在肺泡隔内毛细血管网成单层分布；肺实质内管径较大的微血管表面可以见到纵行的嵴状结构和密集的内皮细胞核的压痕，以及明显的环形缩窄；胸膜下微静脉和毛细血管表面可见圆形内皮细胞核的压痕。

At last, the VNNTF networks learning algorithm is designed, and a single-step and multi-step prediction of traffic flow chaotic times series is researched by VNNTF networks, the VNNTF networks predictive performance is better than the BP networks and Volterra functional model by the simulation results and root-mean-square value.

最后，设计了VNNTF网络学习算法，利用VNNTF网络对交通流量混沌时间序列进行了单步和多步预测，与BP网络和Volterra模型的预测结果比较，取得了相当好的预测效果。

In the computer simulation aspect, following work has been down:At first, the Wolfgang Schreiner's model is employed and extended to a new computer arteriole optimal growing model. Many new algorithms are described, such as signal tracing, resistance calculating, resistance balancing and flow balancing. With these algorithms and methods, the arteriole networks can be grown successfully on microcomputer.Secondly, a growing-network ordering method, which is called auto-centripetal ordering method of the growing networks, can be employed to order the growing networks to calculate the average parameters of the networks in level series.

在计算机模型及仿真方面：首先本文改进、推广了WolfgangSchreiner模型，提出小动脉计算机优化生长模型，以及信号灯追踪、计算网络阻力、阻力平衡和流量平衡新算法，利用这种模型和算法成功地在微机上生长出了小动脉网络；第二，本文提出生长网络自动向心分级法，对生长网络进行了自动分级，并将网络参数的分级统计结果与A。

This paper creatively introduce fractal theory into the study of municipal networks(include pipe networks, sewer networks and storm sewer networks), analyze their fractal character and explain their physical mechanism, which is the origin of the fractal structure.

本文以市政管网（包括供水、污水和雨水管网）作为研究对象，创造性的引入分形理论，分析论证了管网的分形特性及其形成的物理机制。

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。