一个基于抽象解释部分演绎过程

本提出一种新的基于抽象解释的逻辑程序部分演绎方法。在一遍预处理里，针对给定的程序Ｐ和目标Ｇ，同时进行ＰＰＵ｛Ｇ｝的部分演绎和抽象解释，以轴象解释控制部分演绎的展开过程，只要抽象论域是有穷的，部分演绎必定终止，耐用Ｐ’带有抽象解释估算出的关行其运行性质的信息，便于对Ｐ’作进一步优化。     

单向Hash函数的一种构造方法*

单向Hash函数已成为密码学的一个重要组成部分．给定任一定长单向Hash函数f：∑^m→∑^t,m>t，本文给出了利用f构造一单向Hash函数F的一种新方法，该方法易于并行化．     

面向对象的MIS开发技术

本文结合MIS开发工作的实践，利用了面向对象技术的思想，对MIS进行了类抽象，并给出了一种切实可行的面向对象的MIS开发方法。     

Trace 演算

文章定义了基于踪迹(trace)的逻辑语言L_Trace,它是一阶线性时序逻辑语言的扩充,同时也是“对象演算”研究工作的基础.Trace演算所述的“对象”用来刻画具有内部状态和外部行为的动态实体,语法上由对象标记表示.对象标记Ω=(S,F,A,E)包含4个部分:数据类型S、函数F、属性A和动作E.Σ=(S,F)构成通常代数规范意义下的标记,可将动作看成一广义数据类型,从而得到标记Σ的动作扩充ΣE.对象标记的语义解释结构由关于标记ΣE的代数、映射和动作与踪迹的关系定义.ΣE-代数给出关于数据参数的解释;映射给出属性在动作踪迹中所取的值;而动作与踪迹的关系则给出执行一有限踪迹以后该动作是否允许执行.在定义了Trace演算的语法和语义之后,文章给出了Trace演算的公理系统及其可靠性证明.     

确定任意多边形凸凹顶点的算法

本文提出一种确定任意多边形凸凹顶点的算法．该算法的时间复杂性为O(n²logn)次乘法和O(n²)次比较．     

智能大厦系统功能集成

本文从论述BAS集成结构模式与特点，BAS与PABX结合协同集成，以及LAN与PABX一起集成等方面具体分析了如何实现智能大厦系统（IBS）功能上的系统集成．     

无存储器冲突的并行快速排序算法*

本文在一个EREW PRAM(exclusive read exclusive write paralled random accessmachine)上提出一个并行快速排序算法，这个算法用k个处理器可将n个项目在平均O((n/k+logn)logn)时间内排序．所以平均来说算法的时间和处理器数量的乘积对任何k≤n/logn是 O(nlogn)．     

工程图处理工具ACS-26的研制

AutoCAD DWG通用图形处理系统(简称ACS-26)．是基于AutoCAD 2.6图形环境．旨在强化AutoCAD 2.6二次开发能力而研制的工具软件，具有丰实的描述语言．供用户编程表述自已的任务．本文论述ACS-26的功能和 设计原理。     

EXE2BIN命令逆过程的实现方法

本文分析DOS两种可运行文件结构特征，介绍EXE2BIN命令逆过程的实现方法，并给出将．COM文件转 换为．EXE文件的实用程序。     

网络流量的有效测量方法分析

把网络流量的有效测量问题抽象为求给定图G=(V,E)的最小弱顶点覆盖集的问题.给出了一个求最小弱顶点覆盖集的近似算法,并证明了该算法具有比界2(lnd+1),其中d是图G中顶点的最大度.指出了该算法的时间复杂性为O(|V|²).     

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     

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.     

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。