网络

It points out the manifestation of the problems of campus network safety,and puts forward effective countermeasures:rainsing network safety consciousness mentally and guaranteeing the network safety and its operation technically and managerially.

指出校园网络安全的问题表现所在，提出有效对策，从思想上提高网络安全意识；从技术上保证网络安全；在管理上保证网络安全运行

The neural network model simulates the visual characteristics of the human visual system by axons delay pulse neural network in order to extract the moving target and anlyse the actual significance of pulse neuroid algorithm.

这里提出一种基于神经轴突延迟机制，利用脉冲神经元网络模型对运动目标进行检测与跟踪的算法，该神经网络模型是利用轴突延迟脉冲神经网络模拟人类的视觉特性，从而提取运动目标，并具体分析脉冲神经元网络算法的实际意义。

The process of establishing neural network is as follows: two-layer neuronic network configuration is selected, S-type active function is used, input parameter of network are selected for thickness, preheat temperature, heat input and sampling point, output parameter of network is selected for fracture toughness property CTOD, learning algorithm of network is used for back-propagation algorithm.

本文选择了2层神经元的神经网络结构，采用S型激活函数，将板厚、预热温度、线能量、取样位置作为神经网络的输入，将环焊接头的裂纹尖端张开位移CTOD值作为网络的输出，通过BP算法的网络学习，采用VC语言建立了X70管线钢环焊接头CTOD与环焊工艺之间的神经网络。

After analysis and parison of virtues and hort ings of existing systemsafety evaluation ways, Artificial Neural Network, Artificial Intelligence and Expert System are used to build new system safety evaluation means. System safety evaluation model and intelligent expert system for fault diagnosis based on ANN have been put forth. Development and realization of visual neural network for system safety valuation and fault diagnosis provides new idea for system safety evaluation and accident mode diagnosis.

对已有的系统安全评价技术方法的优缺点进行了分析和对比，继而将神经网络技术、人工智能技术、专家系统应用于开发新的系统安全评价方法，提出了基于人工神经网络的系统安全评价方法和基于神经网络的智能故障诊断专家系统模型，开发了可视化的神经网络系统，为系统安全评价与事故模式诊断提供了新思路。

Brown has specified three ideal types of social capital networks, categorized according to the prevailing motivation behind the network's transactions:"'Economic' describes a network of egos motivated by economic considerations; 2 'Status' describes a network of egos motivated by reputational considerations; 3 'Sociability' describes a network whose egos forge ties according to altruistic or particularistic motivations."

布朗把自我按照网络交易的动机分为三种理想类型：&（1）'经济的'指受到经济利益驱动的自我网络；（2）'地位'指受声望考虑驱动的自我网络；（3）'社交活动'指自我按照利他主义动机建立联系的网络。&

It is divided into three chapters. First chapter will describe the procreant background and the present condition of Gigabit Ethernet network. After that, this part will continue to present the sixth copper cable composing Ethernet bit network in detail from these three aspects: design, construction and testing. Especially, it also analyzes the main testing parameters of Gigabit Ethernet network and possible reasons of influencing testing results.

本文第一章首先探讨了千兆网络的产生的背景和现状，然后从六类铜缆千兆网络的设计、施工和测试三个方面，对于这种新型的网络作了较为详细的阐述，并着重分析了六类铜缆千兆网络的主要测试参数及影响测试结果的原因。

The project's research philosophy is a three pronged approach:(1) a holistic network architecture designed from first principles,(2) interdisciplinary fundamental research that addresses the design of an economical, robust, secure and scalable 100x100 network, and (3) proof-of-concept network implementations to demonstrate how the network of the future can be built.

基础研究跨学科，目标是建立经济的、强大的、安全的和波及10亿美国家庭，网络带宽100Mbps的网络（100x100）3。对网络的创建实行理论验证，证明实现未来网络的方法。

In this dissertation, we consider following problems: priority-based wavelength assignment algorithm in restorable WDM transport networks, design of resilient WDM mesh networks, design protection for WDM networks without and with considering wavelength continuity constraint, efficient placement of wavelength converters.WDM Network will play important role in future backbone networks.

本文主要研究和WDM光传送网生存性有关的问题，主要集中在以下几个方面：抗毁WDM网络中的基于优先级的波长分配算法，网状WDM网络的抗毁设计，不考虑波长连续性限制时WDM网络的保护设计，以及考虑波长连续性限制时WDM网络的保护设计和波长转换器的合理放置。

From practice, the implemented network management model based on EJB/SNMP technology on one hand inherit the advantages of network management based Web,on the other hand it has characters of distributed of network management, such as heterogeneity, distribution, scalability, flexibility, extensibility, robusticity, and it enhance the efficiency of NM.

实践表明，我们用基于EJB/SNMP技术的分布式网络管理模型开发出来的应用系统一方面继承了基于Web的网络管理模式多层体系结构的优点，另一方面又具有分布式网络管理的特点——异构性、分布性、可移植性、扩展性、灵活性、系统健壮性等，能大幅度提高网络管理的效率。

Mobile Agent, compared with traditional C/S model, is a novel network computing paradigm, which has some attractive features, such as dynamic adaptability, heterogeneity, robusticity and fault tolerance. It can effectively reduce the network traffic and delay, can be independent of different network protocols, and can also support mobile devices.

移动agent作为一种新的网络计算模型，与传统的客户机／服务器模型相比，具有动态适应性、异构性、健壮性和容错性，在分布式应用中可以降低网络流量、减少网络延迟、封装网络协议差异、支持移动设备。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。