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了网络参考
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  network reference
     Discusses the meaning of network reference information resource evaluation,analyzes the 17 index factor of network reference information resource evaluation,points out the advertent problems of network refernce information resource evaluation.
     文章论述了网络参考信息源评价的意义,分析了网络参考信息资源评价的17项指标因素,指出了网络参考信息源评价注意的问题。
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     The paper states the definition and characteristics of network reference information resource,and introduces its status:based on the discussion of its effect on library's consulting work,and points out some advice on how to effectively utilize it.
     文章简述了网络参考信息源的含义与特点 ,并分类介绍主要网络参考信息源的现状 ; 在讨论网络参考信息源对图书馆咨询工作的影响基础上 ,就咨询馆员如何有效利用网络参考信息源问题提出建议。
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     This paper discusses the evaluation principle of network reference information,analyzes the evaluation methods and points out some problems to be concerned.
     论述了网络参考信息源的评价原则,分析了网络参考信息源的评价方法,指出了网络参考信息源评价注意的问题。
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     The paper states the evaluation purpose of network reference information and analyses 11 indexes of network reference information.
     论述了网络参考信息源评价的目的,分析了网络参考信息源评价的十一项指标因素。
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     Discusses the 10 greatest characteristics of network reference information resource,analyzes the 6 principal types of network reference information resource.
     论述了网络参考信息源的十大特点,分析了网络参考信息源的六种类型。
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  相似匹配句对
     Networking
     网络
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     According to the E.
     参考E .
短句来源
     NETWORK
     网络
短句来源
     Reference Service under the Network Environment
     网络环境下的参考咨询服务
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     On Reference Services under the Network Environment
     网络环境下的参考咨询服务
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  network reference
The paper presents a test of an ecologically differentiated model of social network orientation for adolescents that distinguished between different social network reference groups (family, peers, and nonfamily adults).
      
Results supported a three-factor model of network orientation that differentiated between network reference groups.
      
Analyses of concurrent and predictive validity indicated that orientation to network reference groups was differentially related to the perceived quality and frequency of support from members of respective social network groups.
      
Group differences (gender, race) regarding network orientation to different network reference groups were consistent with studies of other social network processes.
      
There is a growing interest in evolving localized network reference services into more fully interconnected, collaborative reference services.
      
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The paper presents an elimination approach to the oriented graph which is used to reorder the structure of the asymmetric sparse-matrix according to the rule of minimal fills or minimal long operations in LU factorization. It is shown that the approach can not only be applied visually and simply, but alsso be used conveniently in sparse-matrix techniques. The reguired storage for the input data required with this approach is S-N+21. Rules pertaining to the approach are developed and used to renumber the network...

The paper presents an elimination approach to the oriented graph which is used to reorder the structure of the asymmetric sparse-matrix according to the rule of minimal fills or minimal long operations in LU factorization. It is shown that the approach can not only be applied visually and simply, but alsso be used conveniently in sparse-matrix techniques. The reguired storage for the input data required with this approach is S-N+21. Rules pertaining to the approach are developed and used to renumber the network nodes for the nodal equation of electrical networks. For example, the author has prepared a complete FORTRAN IV program for analyzing the nodal number of an electronic circuit on a digital computer. Through the analysis of twenty-five system data and the comparison of the results thus obtained, the following conclusion can be arrived at: the stability for the number of the fill-in and the long operations on the node admittance matrix through renumbering depends on the proper selection of the fixed reference node.

本文提出在LU分解中按填入数最少原则(或按长运算次数最少原则),对结构不对称稀疏矩阵[A]进行重排序的一种方法——有向图消去法.该方法直观简便,有利于稀疏矩阵技术.它所需要的输入内存量较少,仅为S-N+2I,有时比[A]的非零元素总数还少.本文还研究了电网络节点编号的优化问题,得出网络参考节点的选定,对重编号后[Y_n]在LU分解中的填入数和长运算次数具有稳定性这一结果.

Neural networks and PD feedback controllers for adaptive tracking in nonlinear systems are presented. The PD feedback controller is used as a general feedback controller to guarantee global stability,and its output is fed to the neural network as the reference signal. The asymptotic set-point tracking of the system can be guaranteed by selecting the appropriate initial weights and the updating rate of the weights of the networks.

研究了应用神经网络和PD反馈控制实现非线性系统的自适应跟踪问题。PD反馈控制器不但保证闭环系统的稳定性,同时其输出又作为训练神网络的参考信号。证明了通过选择适当的初始加权和加权的调节速率可以实现非线性系统的固定点跟踪。

This paper studys layer specification of QoS and content of resource management of multimedia. It discusses coordination between architecture of QoS layers and OSI reference model and operating system, and presents an useful logical architecture of resource management that can be used in VODs and video conference systems.

本文研究了QoS的层次表达和多媒体资源管理的内容,讨论了QoS层次结构与OSI网络参考模型以及操作系统的对照关系,提出了一种可行的资源管理的逻辑结构。它可被用于实现VOD和视频会议系统。

 
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