基于ECC的移动电子商务安全框架研究

随着3G技术和智能手机的飞速发展,移动互联网已成为时代的骄子,智能手机用户爆炸性的增长速度使得移动电子商务渗透到生活中的方方面面,推动着移动电子商务的快速发展。文章从解决移动电子商务安全问题的角度出发,从自主创新和系统集成创新两个方面提出了实现移动电子商务平台的安全保障框架,并详细介绍了安全框架的设计和实现方法。安全框架在相关移动电子商务平台项目中的实际运行情况表明,该框架能够为企业提供完善的安全解决方案,降低各企业单独实施电子商务安全的成本和风险,增强用户对移动电子商务安全的信心。     

Android平台说话人认证系统的并行计算与设计

智能手机技术的快速进步催生了移动商务的蓬勃发展,智能手机移动商务平台的安全性和身份认证问题已经成为移动商务能否进一步发展的关键。说话人识别技术作为一种生物识别认证技术应用到现有的智能手机中非常便利,而且有其他安全认证技术所无法比拟的优势。因此,将说话人识别相关技术应用于Android系统的安全认证中,设计了基于Android平台的说话人认证系统。同时由于智能手机多核性和特征参数提取工作的独立性,为了提高认证系统的效率,提出了基于Android平台的并行算法,并在不同机型上做了相关的实验,通过实验结果可以发现在Android平台采用并行算法能够较大幅度地提高认证系统的效率,从而提高认证系统的用户体验。     

浅析智能手机的军事应用前景

随着移动互联网络时代的到来,智能手机的功能越来越强大,人类享受科技带来的便捷生活。美国军方将移动宽带和智能手机应用于军事领域,开展了智能手机军事应用6大关键项目及其他一些实践项目研究,推动了智能手机军事应用发展。借鉴美军经验,结合我军特点,提出我军应从长远考虑,加强基础研究,构建适合军用智能手机应用软件开发和下载的平台,可在卫星导航、情报共享、指挥信息系统移动终端、教育训练和语言翻译等几个方向重点发展,以此带动我军智能手机军事应用。最后分析了军用智能手机的安全保密问题,提出从教育管理和技术防护两个方面来加强安全性和保密性。     

智能手机的移动增强现实技术研究

随着增强现实技术的快速发展以及智能手机技术的革新,移动增强现实(M-AR)技术得以脱离体积庞大的PC机设备的限制,使其向户外和无线化发展成为可能,并由此推动了增强现实技术在智能手机上的应用。针对智能手机的移动增强现实技术在应用发展中所要解决的问题,进行了分析和探讨,较为系统地阐述了该领域最新的发展状况,并展望了该技术未来的发展前景。     

移动互联网安全现状及对策研究

智能手机的普及和移动应用的日益丰富带动了移动互联网业务的快速发展,移动社交、移动支付等各种应用带来了便捷的同时,移动互联网的安全问题也不容忽视.移动终端、通信网络、内容应用都存在着各种不同的安全问题.在总结当前移动互联网的安全现状的基础上,分析了其目前面临的安全问题,提出了移动互联网的安全模型,并对终端用户提出防护建议.     

基于启发式杀毒的智能移动终端安全研究

随着智能手机市场的发展,智能手机已经变得越来越普及,然而其安全问题却成了重大潜在威胁。本文总结手机病毒的分类及传播途径,针对智能移动终端特点提出基于启发式杀毒的智能移动终端软件设计并给出了手机恶意程序的典型行为规则。     

移动互联时代智能手机信息安全问题与对策分析

随着移动互联网的不断发展和智能手机的普及应用,尤其是免费WiFi的大面积覆盖,智能手机面临的安全形势也日益严峻。文章针对智能手机当前面临的各类新风险,从智能手机的系统安全、通信传输安全以及云端安全等几个方面分别阐述了智能手机的安全现状、智能手机面临的安全风险,并提出了相应的信息安全应对策略。     

基于智能手机的移动学习探究

随着智能手机的高度普及以及移动技术的日渐成熟,基于智能手机的移动学习新方式具有巨大的发展潜力。通过问卷调查了解当前大学生智能手机拥有情况,并以英语为学习对象了解大学生使用智能手机进行网络学习的意愿,以及大学生现有网络自主学习平台使用现状及问题。针对网络自主学习平台应用存在的不足,结合智能手机和移动技术的应用趋势,给出了相应的建议。     

基于沙盒技术的企业移动应用安全平台

随着智能手机的普及,移动互联网正在成为发展主流,大量的应用从PC向手机端转移. 移动应用给企业的业务和办公带来了便利,同时也带来了各种安全风险和管理问题. 本文研究了企业移动应用沙盒技术,它将企业移动应用及其数据和个人应用及其数据进行隔离,保护企业应用和数据的安全. 经过实践证明,基于沙盒技术开发出的产品能够满足企业的数据保护要求,并且使用方便.     

基于智能手机的移动学习系统关键技术研究

随着移动通信技术的发展、智能手机的普及以及碎片式学习需求的增长,基于智能手机的移动学习已经成为热点。面对智能手机多样化操作系统和差异化特性的现状,基于智能手机的移动学习系统必须解决跨平台难题。在分析移动学习系统功能需求的基础上,从交叉编译、移动web app、混合移动web app、移动Widget等角度探讨移动学习系统的跨平台关键技术,总结不同技术的特点和优劣势,设计不同技术支持下的适应不同功能需求的移动学习系统框架结构,形成基于智能手机的跨平台移动学习系统建设的初步方案。     

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.