局域网安全技术与病毒防护

全球化经济的浪潮使企业间和企业内部需要建立一种高效的联系.局域网 Internet满足了这种需求,发展相当迅速,同时企业的信息安全和病毒防护也显得至关重要.本文通过对网络安全技术的剖析,提出了局域网的安全防护解决方案,对局域网的广泛应用和企业的信息安全具有一定的意义.     

企业无线局域网安全方案研究

在国家高度重视网络信息安全的大背景下,建设安全的企业无线局域网,避免使其成为黑客进入企业内网的捷径。文章首先调研分析了无线局域网黑客攻击技术与安全防护技术,然后研究设计了企业无线局域网安全方案并开展安全评测,最后从用户接入、基础设施和安全防护等三个方面总结提出了企业无线局域网安全方案建议。     

浅析局域网安全问题及防护策略

随着局域网的广泛应用,局域网的安全与防护问题也被大家日益重视。该文分析了局域网面临的主要安全威胁,提出了相应的强化局域网信息安全的防护策略。     

局域网企业信息安全系统设计研究

局域网企业信息安全系统是对企业信息系统运行情况进行监督和对企业信息进行安全管理的最佳措施,在现代企业的经营和管理工作中,应该对其构建给予足够重视.对局域网企业信息安全系统设计需求进行了简单介绍,并从多个方面考虑对系统结构设计和系统功能结构设计进行了详细研究.     

局域网安全设计关键技术分析

局域网网络安全一直关系到企业内部信息的安全,本论文重点探讨了局域网安全设计的技术,在简单介绍了局域网网络安全的定义及其设计原则的基础上,重点对局域网网络安全的设计技术,结合公司内网的信息安全要求,从网络物理安全设计、网络结构安全设计、网络应用系统安全设计和网络管理系统安全设计等几个方面详细论述了局域网网络信息安全的实现技术方案,对于进一步提高局域网信息安全设计技术及其应用水平具有一定借鉴意义。     

局域网内敏感信息保护技术

如何从内部防止信息丢失是目前信息安全的防护的一个重点,如何防护各种不同方式的信息泄密是一个非常复杂系统工程,该文中提出了一种新的思路和方法,用以保护局域网内的重要数据。     

企业信息安全立体防护体系构建研究

近些年来,互联网有着非常显著的发展,企业信息化建设和电子政务等领域对互联网的应用也越来越广泛,信息系统的安全问题已经不仅影响到企业的发展,而且已经与国家主权和安全问题紧密联系在一起。建立与优化企业的信息安全立体防护体系,提高企业的信息安全管理水平,不仅有利于企业增强保护信息安全的能力,而且有助于企业发展。本文主要讨论了目前企业信息安全的现状,分析了企业信息安全立体防护体系的构建原则和构建策略。     

浅谈提高涉密文件安全防护能力的有效措施

本文首先分析了当前涉密文件安全防护技术现状,找出了安全防护措施不力的根本原因,在此基础上提出了一种加强文件安全防护能力的有效措施——主动防泄密安全机制,并根据单位内部局域网信息安全防护的实际需要,提出了具体的技术实现方案,从根本上有效提高了涉密文件的安全防护能力。     

浅谈提高涉密文件安全防护能力的有效措施

本文首先分析了当前涉密文件安全防护技术现状,找出了安全防护措施不力的根本原因,在此基础上提出了一种加强文件安全防护能力的有效措施——主动防泄密安全机制,并根据单位内部局域网信息安全防护的实际需要,提出了具体的技术实现方案,从根本上有效提高了涉密文件的安全防护能力。     

企业信息防泄漏安全简述

目前,数据防泄漏是信息安全的热点问题。随着网络应用的飞速发展、In—temet应用的日益广泛,信息安全问题变得尤为突出。建立完善的数据泄漏防护体系、保护核心资源,已迫在眉睫。鉴于目前内部局域网的现状,可以针对数据存储层和数据传输层进行加密,结合文档和数据生命周期,对内部网络分为终端、端口、磁盘、服务器、局域网四大区域,并针对数据库、移动存储设备、笔记本电脑等特例,统一架构,分别防护,实现分域安全。     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.