In order to secure active networks, we need two basic services: authentication and authorization.
为了保障主动网络安全，我们需要两个基本服务，即认证和授权。
In order to introduce and deploy new services quickly, the concept of Active Networks was proposed.
为了在网络中快速地引入和展开新服务，人们提出了主动网络的概念。
Active networks, which allow users to customize their network services arbitrarily, are programmable.
主动网是一种允许用户“按需”定制自己的服务的可编程网络。
The distributed computation ability of active networks provides a new approach to network flow control .
主动网络的分布式计算能力为网络流量控制提供了新途径。
Compared with the traditional networks, active networks are flexible, extensible and dynamically upgradable.
与传统网络相比，主动网络灵活、可扩展并能动态升级。
This paper introduces active networks, discusses these issues and proposes some approaches to overcome the challenges.
该文介绍了主动网络并讨论了这些技术上的挑战，提出了一些解决方法。
The analysis of sector bias circuit for microwave active networks is made by means of the theory of radial transmission line.
利用径向传输线理论对微波有源网络的扇形偏置电路进行了分析。
This paper discusses authorization and authentication of active node in active networks, and issues about their implementation.
文章讨论了主动网络节点的授权和认证，以及实现中必须解决的技术问题。
As the nodes of active networks are programmable, the security problems of active networks are more serious than traditional networks.
与传统网络的安全性相比，由于主动网络的节点是可编程的，因此主动网络的安全性问题更加突出。
Then it pointed out the architecture of active network node based on the portrait architecture and orientation architecture of active networks.
基于主动网络的纵向结构和横向结构，指出了主动节点所应具有的结构。
Besides, it can be used both to measure the small signal S-parameters of active networks and the S-parameters of passive networks with high accuracy.
此法也可用于猜测一切有源网络的小信号s参数和一切无源网络的S参数。
The modified node method in the linear active networks with controlled sources is discussed and modified in this paper, then the corresponding equation is set up.
文章对有受控源的线性有源网络在改进节点法的基础上提出了一种新的方法，并建立了对应的改进节点电压方程。
Therefore, the core functionality of active networks is to identify, transfer, load and execute active applications to perform the computation required by the end users.
因此，主动刚络的核心功能是按照用户要求识别，传输，加载并运行主动应用程序，以完成用户所需要的计算。
A universal security framework based on MABAN is designed according to an security standard of active networks security working group (ANSWG), which can protect the resource of an node effectively.
设计了一个通用的基于移动代理的主动网络安全框架，其符合主动网络安全工作组提出的主动网络的安全规范，能有效地保护主动结点的资源。
Active networks provide an innovative networking platform that is flexible and extensible at runtime and supports the rapid evolution and deployment of networking technologies to suit current needs.
主动网提供了一个全新的网络平台，它在运行时灵活、可扩展，支持快速更新和网络技术的快速配置以适应当前需要。
Active lifestyles often provide older persons with regular occasions to make new friendships, maintain social networks, and interact with other people of all ages.
充满活力的生活方式常常为老年人定期提供机会，结交新的朋友，维持社交网络，并与各年龄组的其他人交往。
Well, it's only going to get worse, according to a study that suggests users become more active in online social networks the bigger they become.
是的，而且每况愈下，根据最近的一项研究，其表明在线社交网络越大则用户越积极。
For example, I'm part of several blogging networks, but I haven't been as active lately as I'd like.
举个简单的例子，我身为众多博客的版主，但是我没有时间在那儿活跃。
Today, almost one in four younger Boomers are active in social networks, up from 15% in 2007 .
今天，几乎是他们之中的1/4的人都活跃在社交网络上，从2007年的15%（增长至此）。
And while 1 million networks definitely sounds impressive, only about a fifth of these are currently active.
100万个社交网络让人刮目相看，但只有五分之一的网络处于活跃状态。
Ning, according to its own stats, currently hosts over 1.5 million different social networks (how many of these are active is a different question, however) and has about 33 million registered users.
根据Ning自己的说法，它目前托管的有150万个不同的社交网络(至于其中有多少活跃的用户，那又是另外一回事了)以及3300万的注册用户。
Like the big public networks, these custom-made ones typically allow employees to see who else is active, set up project groups and exchange stuff among themselves.
和公共的社交网络类似，这些定制的网络可以让员工看到还有谁在线，成立一个项目组，还可以在同事之间互相传递信息和文件。
These showed their brains' pain networks were more active when they thought the drug was not being administered.
扫描结果显示，受试者以为自己没有被输入止痛药时，大脑的痛觉神经系统更为活跃。
Gazzaley says the team focused on two networks in the brain, one that revs up when volunteers are trying to keep the scene in mind and another that becomes active as they evaluate a face.
Gazzaley说，研究队伍将集中注意力在大脑中两个网络，当志愿者一个的大脑网络快速运转，正在努力进行现场记忆是，另一个可以从面部的形状变化评估得出是变得兴奋的。
An intelligent mail is an active program which can be executed and solve many problems during the time it goes round in networks.
智能邮件是一种可执行的程序体，它自动地在网络中动态巡游，能解决许多麻烦而重要的问题。
An intelligent mail is an active program which can be executed and solve many problems during the time it goes round in networks.
智能邮件是一种可执行的程序体，它自动地在网络中动态巡游，能解决许多麻烦而重要的问题。
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