网络安全漏洞扫描器设计与实现

本文介绍了网络安全漏洞扫描的必要性;通过分析网络安全漏洞扫描器工作原理及漏洞扫描技术,提出了一个网络安全漏洞扫描器的设计方案,并对该系统的各个功能模块的设计与实现进行了详细介绍。该扫描器具有功能完善,扩展性较好,可生成评估报告等特点。     

网络安全漏洞扫描器

网络安全漏洞扫描器是近年来网络安全研究的热点。文章说明了网络安全漏洞扫描的必要性,给出了网络安全漏洞扫描器的概念和结构,概述了多种漏洞扫描的技术,最后介绍了网络安全漏洞扫描器的国内外现状及评判标准。     

网络扫描技术实现及其在网络安全中的应用

在介绍了网络扫描器和其基本工作原理后，归纳并且详细分析了网络安全扫描软件所涉及到的几种关键技术，其中包括：全TCP连接扫描、TCP SYN扫描、ICMP扫描、TCP FIN扫描等。然后介绍了几种常见的端口扫描工具以及网络安全扫描软件：Safety。最后给出了解决端口扫描问题的建议和对策。     

网络安全防护体系的研究与实现

本文主要介绍了由防火墙、扫描器,入侵检测系统等组成的网络安全防护体系,并提出几种安全解决方案.     

网络安全扫描器核心技术和主要产品介绍

阐述网络安全领域的两大扫描技术端口扫描和漏洞扫描的技术原理及其实现,并介绍扫描器的代表性产品。     

安全扫描器综述

安全扫描器是自动检测远端或本地网络和主机安全脆弱点的软件。文章介绍了安全扫描器的概念、功能、分类、体系结构、原理及软件结构，概述了当前安全扫描器采用的技术，同时分析两类安全扫描器的实现，并比较了它们的特性，分析了影响扫描器的因素，并由此指出了扫描器的发展趋势。     

系统漏洞扫描器分析

本文详细介绍了基于网络的漏洞扫描器和基于主机的漏洞扫描器的工作原理,分析了两种扫描器的特点,分别归纳了两种扫描器的优缺点。本文可以为设计扫描器和选择扫描器提供很好的理论支持。     

基于Web的漏洞扫描系统的设计与实现

分析了网络漏洞扫描器在网络安全领域的重要作用及其工作原理，介绍了漏洞扫描器开源软件Nessus的优点，介绍了一个在Nessus的基础上开发的基于Web的网络漏洞扫描系统的设计与实现。     

在Windows平台上体验NMap 4.0

端口扫描器是网络安全专家的必备工具，本文介绍的Nmap4．0是一款开源的、适用于Windows平台的端口扫描器。它不仅运行快捷、可靠。而且提供详细的文档和更准确的应用程序版本检测功能，还支持XML输出。还等什么呢？赶快下载试用吧。[编者按]     

漏洞扫描技术及其在入侵检测系统中的应用

介绍了漏洞扫描器和其基本工作原理后,归纳并且详细分析了网络安全扫描软件所涉及到的几种关键技术.其中包括全TCP连接扫描,TCPSYN扫描,ICMP扫描和TCPFIN扫描等.然后介绍了几种常见的漏洞扫描工具,最后介绍了漏洞扫描技术在入侵检测系统中的具体应用和入侵检测系统的未来发展.     

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。     

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.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。