基于ARM的脑血氧监测仪的软件设计与实现

介绍了基于ARM的脑血氧监测仪软件的设计与实现。该软件通过控制探头对脑血氧信息进行采集并通过无线方式将信息发送给终端,终端对接收到的信息进行处理和显示,同时将病人信息存储在SQLServerCE2.0数据库中,实现病人信息的查询、添加、删除等功能。     

基于TPM的终端数据可信迁移研究

提出一种终端数据可信迁移方案以解决数据无防护地流入/流出终端所带来的安全问题。根据“全程BLP规则”对待流入/流出的数据进行安全检查,只允许符合安全策略的数据迁移,由TPM负责将其加密/解密。介绍实现框架并分析其安全性。该方案可以保证迁移数据的机密性和可控性。     

基于矿山物联网的井下物资管理系统设计

针对井下物资管理混乱、物资消耗信息录入延迟且不准确、劳动力浪费等问题,设计了一套基于矿山物联网的井下物资管理系统,给出了该系统的物联网架构,阐述了该系统功能模块的设计。该系统利用有源RFID标签与智能手持终端从现场环境获取井下物资信息,并通过WiFi网关将数据上传到数据服务器中,服务器将数据处理后转存到数据库中,通过Web技术访问、处理并显示数据,从而实现对井下物资生命周期的实时监测与管理。     

安全数据库隐私保护和访问控制集成研究*

数据库数据的合法使用和隐私保护是现代安全数据库系统面临的新挑战。针对目前单方面考虑隐私保护或访问控制技术难以同时满足数据库信息安全和处理性能需求的不足,提出一种集成访问控制和隐私保护技术的安全数据库模型,通过建立查询审计隐私保护模型中的查询可疑性与授权视图访问控制模型中查询有效性之间的关系,形成统一的查询判断方法,并给出多项式时间复杂度的审计算法和集成的安全检查框架,以同时实现数据库系统隐私保护和访问控制的安全功能。     

计算机网络数据库安全技术方案的研究

随着科学技术的迅速发展和社会经济的不断进步,计算机网络技术已经在我国各个行业中得到广泛的应用,计算机技术在应用过程中,主要是通过网络数据库来实现信息数据的管理和储存,但是计算机网络带有一定的开发性,导致计算机网络数据库在使用过程中在外界因素的影响下,直接影响到计算机网络的使用安全性。计算机网络数据库中保存了很多有用的信息数据,如果出现安全隐患,将会导致这些有用的信息数据出现丢失的情况,后果不堪设想,所以必须加强对计算机网络数据库安全技术方案的探讨。本文主要针对计算机网络数据库面临的安全威胁进行深入分析,探讨计算机网络数据库科学、有效的安全技术方案。     

基于双核的安全Windows网络驱动程序的研究

提出了一种基于双核的网络安全解决方案,研究并实现了主辅核之间的通信机制和辅核Windows端网络驱动程序。双核的安全Windows终端架构是将安全防护模块移植到嵌入式系统中,可以有效地防止黑客对Windows终端的侵入及终端内敏感信息的流出。驱动程序开发使用的环境为:VC++6.0、Windows Driver Development Kit、DriverStudio3.2。实验证明该方案可以对网络数据包安全分析和过滤,达到Windows终端安全的目的。     

内网终端安全检查与接入控制的设计与实现

针对信息化条件下内网安全建设的需求,从运行环境和可信接入两个层面入手,设计了终端安全检查与接入控制系统,该系统对终端计算机的运行环境进行检查和修复,直至其满足可信接入条件后才允许该终端通过802.1x认证接入内部网络,这种方法较好地实现了针对终端主机的可信接入控制。所提出的设计理念和实现方法是对内网安全防护领域很好的补充和完善,应用前景非常广泛。     

卫星定位系统的手机终端公交实时查询

为了提高城市化智能公交水平,方便智能手机用户实时查询公交线路信息,该文提出基于Android开发平台的手机终端实时查询系统,实现公交站点查询、车次查询和换乘方案查询等功能。该系统使用Android软件开发工具包和Mysql数据库进行开发,应用程序代码实现基于Java语言。用户通过手机终端可获取想要乘坐的公交车的具体信息,从而给用户的出行带来便捷。     

基于RFID散养模式下猪肉溯源系统的研究

针对目前国内养猪业大量的散户养殖模式,将RFID技术与网络传输技术、数据库技术应用到猪肉安全溯源系统的建立中。首先分析了国内猪肉安全存在的问题,通过分析猪肉生产、销售环节,设计了生猪养殖信息数据采集方案、屠宰信息系统的系统功能,并将RFID技术应用到生猪个体标识和胴体标识中,实现猪肉产品的安全可溯源。     

基于TCM的嵌入式可信终端系统设计

针对目前各种嵌入式终端的安全需求,借鉴普通安全PC中TPM的应用情况,结合操作系统微内核技术,提出一种嵌入式可信终端设计方案,该方案基于可信根TCM,实现了自启动代码、操作系统到上层应用程序的"自下而上"的可信链传递,适用于嵌入式终端的安全应用.最后,通过设计一个试验系统,重点阐述了可信启动的具体实现步骤,并分析了因此带来的性能变化.     

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.