网络安全产品的协同应用——构建人性化校园网安全问题辅助决策平台

目前随着局域网规模的扩大和各种网络安全问题的出现,大家对网络安全问题越来越重视。针对不同的安全问题,各种各样的网络安全产品不断的涌现,往往一个单位购买或自己开发了很多安全产品。但是大部分的安全产品都独立运行,且功能上会有重复。如果通过一个中间平台能让它们之间协同操作,发挥各自优势,及时发现网络中的问题主机及主机使用者的详细信息并做进一步沟通、处理,构成一个主动服务式管理的网络安全系统。这样就大大提高设备的利用率和使用价值,对网络中出现的安全问题能做到及时发现及时处理,将其消灭在萌芽状态,避免发生重大损失。笔者结合自己单位的实际情况,描述了一个安全问题辅助决策平台,并分析了其构成模块和处理流程。     

基于校园网的入侵检测系统的研究

首先提出了网络安全技术所面临的新问题,从入侵检测技术的历史、定义、分类及发展趋势等几方面阐述了入侵检测技术的基本知识,并结合校园网入侵防御系统方案阐述了入侵检测技术的应用。     

构建基于XML的在线备忘录

XML能够使用得Internet上的数据交换变得更方便,XML与数据库一样,都能够作为信息存储的途径。当数据量不大的时候,比如完成一个在线备忘录,XML作为数据存储具有关系数据库所无法比拟的优势。在asp.net中能够利用.net类库提供的类及方法轻松地构建一个基于XML的在线备忘录。     

MATLAB 7.3与.NET新接口技术

MATLAB r2006(7.3)下利用COM组件实现VB.net与MATLAB混合编程的新方法。并用实例介绍了这种方法的具体应用过程。     

浅析网络信息安全技术

近年来,网络技术的迅速发展和Internet在全世界范围的普及,使得网络安全问题变得越来越重要。在对网络信息系统的安全性问题进行详细分析的基础上,针对信息系统安全目标,提出了网络安全问题的解决方案。     

DataView控件的使用技巧

在ADO.NET提供的数据访问控件中,DataView具有功能强大的数据处理功能。本文就DataView的数据排序、数据筛选、数据搜索、数据修改等功能实现技巧进行探讨。     

Expansion of a matrix in terms of external products of configuration vectors

The paper proposes a neural-net iterative algorithm that allows us to represent any random symmetrical N×N matrix as a weighted Hebbian series of configuration vectors with a given accuracy. The iterative algorithm is shown to demonstrate the fastest convergence when the vectors of expansion are stable nods of the N-dimensional space corresponding to the extremums of the neural-net energy functional. It so proves that all conclusions about neural networks and optimization algorithms that are based on Hebbian matrices are true for any other type of matrix. The text was submitted by the author in English.     

A generalized Petri net modeling approach for the control of re-entrant flow semiconductor wafer fabrication

Re-entrant flow manufacturing lines, such as occur in semiconductor wafer fabrication, are characterized by a product routing that consists of multiple visits to a workstation or group of workstations during the manufacturing process. In this paper, a modeling approach is based on the use of generalized Petri nets for a re-entrant flow manufacturing line is presented. Specifically, three Petri net models representing a re-entrant flow line with three work centers and six machines are modeled. How these models may be used to represent a variety of queuing disciplines and work release policies is discussed.     

A multi-agent intelligent system for efficient ERP maintenance

The Enterprise Resource Planning (ERP) system is an enterprise-wide integrated software package designed to uphold the highest quality standards of business process. However, for the time being, when the business condition has been changed, the system may not guarantee that the process embedded in ERP is still best. Moreover, since the ERP system is very complex, maintaining the system by trial and error is very costly. Hence, this paper aims to construct a support system that adjusts ERP system to environmental changes. To do so, we adopt multi-agent intelligent technology that enables autonomous cooperation with one another to monitor ERP databases and to find any exceptional changes and then analyze how the changes will affect ERP performance. Moreover, Petri net is applied to manage the complexity and dynamics of agents’ behavior. To show the feasibility of the idea, a prototype agent system, ERP/PN, is proposed and an experiment is conducted.     

基于BDI的Agent合同网实现

合同网是一个用于分布式问题求解的高层通信协议,本文给出了一个扩充的合同网协议的会话策略和一个BDI精神状态形成模型,并在此基础上将BDI模型用于合同网协议,给出了实现合同同网协议的一系列BDI行为驱动规则。本文在合同网协议的招投标过程中引入了信任度、稳健度和积极程度等精神状态参数,这类参数有助于改善协作质量,从而使系统具有较好的适应性和灵活性。