数据挖掘技术在网络安全中的应用

研究网络安全问题,网络入侵方式具有多样性.未授权滥用网络资源,给网络安全带来影响,对网络入侵检测系统实时性要求比较高.而当前网络入侵检测系统存在检测速度慢,检测正确率低,不能适应网络入检测发展.为了保证网络安全,根据入侵检测系统要求和人工免疫原理提出一种基于人工免疫原理的网络入侵检测系统,用于弥补目前在网络入侵检测方面的一些缺陷.最后对网络入侵检测系统进行构建和仿真.仿真结果表明,人工免疫原理的网络入侵检测系统加快了网络入侵检测速度,提高了入侵检测的正确率,有效的降低入侵漏报率,为网络入侵检测提供了一种新的检测工具.     

基于数据融合和数据挖掘技术的入侵检测系统的分布式架构设计

本文根据以太网技术的发展以及入侵检测系统的特殊需求,通过比较几种入侵检测系统的设计,分析了应用于入侵检测系统的数据融合和数据挖掘技术,并在此基础上提出了一种新的入侵检测系统架构模型。     

数据挖掘在网络入侵检测系统中的应用

为了提高入侵检测系统的效率,将数据挖掘技术应用于网络入侵检测。介绍了入侵检测系统的基本概念,阐述了数据挖掘在入侵检测系统研究中常用的技术,提出了基于数据挖掘的入侵检测系统和一种改进的基于k-means算法。     

基于免疫危险理论的入侵检测系统设计

为了提高入侵检测系统识别入侵的能力,基于免疫危险理论设计了一个基于网络的入侵检测系统。论证了这种入侵检测系统具有更强的入侵识别能力、更好的健壮性和较低的误报率,是一种比较有效的入侵检测系统。     

大规模分布式入侵检测系统的研究与探讨

本文首先分析了入侵技术及入侵检测系统的发展趋势,然后给出了一种大规模分布式入侵检测系统的整体模型,并在系统中综合运用了多种入侵检测方法,使整个系统具有良好的规模扩展性和高的入侵检测性能.     

一种基于数据挖掘技术的入侵检测模型研究

入侵检测系统是一种检测网络入侵行为并能够主动保护自己免受攻击的一种网络安全技术,是网络防火墙的合理补充。文中分析了入侵检测系统的通用模型,介绍了入侵检测系统的分类,给出了传统的网络检测技术,在此基础上,详细讨论了数据挖掘技术及其在入侵检测系统中的应用,提出了一个基于数据挖掘技术的入侵检测模型,该模型采用了数据挖掘中的分类算法和关联规则。经过实际测试,该模型能够使网络入侵检测更加自动化,提高检测效率和准确度。     

一种基于数据挖掘技术的入侵检测模型研究

入侵检测系统是一种检测网络入侵行为并能够主动保护自己免受攻击的一种网络安全技术,是网络防火墙的合理补充.文中分析了入侵检测系统的通用模型,介绍了入侵检测系统的分类,给出了传统的网络检测技术,在此基础上,详细讨论了数据挖掘技术及其在入侵检测系统中的应用,提出了一个基于数据挖掘技术的入侵检测模型,该模型采用了数据挖掘中的分类算法和关联规则.经过实际测试,该模型能够使网络入侵检测更加自动化,提高检测效率和准确度.     

基于集成神经网络的智能决策入侵检测系统

针对传统入侵检测系统存在误报率、漏检率较高的问题,提出了一种将误用入侵检测和异常入侵检测相结合的智能决策入侵检测系统,该系统基于集成神经网络技术,通过D—S证据理论可以将两种技术很好地结合起来,提高入侵检测系统的效率。阐述了该入侵检测系统的总体结构部署以及各组成模块的相应结构设计。     

基于专家系统和神经网络的网络入侵检测系统

研究网络安全问题,网络入侵方式具有多样性和不确定性,当前大多数入侵检测系统检测正确率低,误报和漏报率高的缺陷。为了提高网络入侵检测正确率,保证网络安全,提出一种基于专家系统和神经网络的智能入侵检测系统。首先采用专家系统对已知网络入侵进行检测,然后采用神经网络对专家系统不能发现的未知网络入侵进行检测,最后利用神经网络检测结果对专家系统规则库进行更新。采用网络入侵检测数据库KDD CUP 99进行仿真,结果表明,智能入侵检测系统提高了网络入侵检测的正确率,有效降低了网络入侵的误报率和漏报率,为网络入侵提供了一种新的有效的检测工具。     

基于高速网络的入侵检测系统研究

目前基于网络的入侵检测系统已经无法适应高速增长的网络速度,因此研究在高速以太网上实现的网络入侵检测系统是十分必要的。介绍了两种基于高速网络的入侵检测系统。一种是基于FPGA的高速网络入侵检测系统,另一种是基于数据分流的高速网络入侵检测系统。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.