智能腹膜透析机设计中提取状态跳转表的方法

腹膜透析是治疗肾衰竭疾病的重要手段。在智能腹膜透析仪设计过程中,在Stateflow中建模和仿真。在这种环境下,可以实现有限状态机理论的各种基本元素。在研究Stateflow及其状态图文档的基础上,提出从Stateflow状态图提取状态跳转袁的方法。     

基于Stateflow和xPC的监控系统实现

Stateflow是MATLAB提供的一种基于有限状态机理论的图形化建模和仿真工具。本文介绍了Stateflow的重要概念和基本用法。并使用MATLAB的Simulink、Stateflow和RTW／xPC工具箱,完成一仓厍监控系统从建模、仿真到实时代码生成的完整过程,大大缩短了监控系统的开发周期。     

Stateflow在安全联锁回路仿真中的应用

Matlab是现在工程领域中一套最为出色的科学计算软件,Stateflow是Matlab自带的工具箱,主要用来实现对工程问题的模型化和动态仿真。本文介绍了Stateflow的基础知识以及基于Stateflow的安全联锁回路仿真建模方法,并以氢氧化铝焙烧炉预热燃烧器作为具体实例进一步阐述。这种方法使逻辑设计仿真变得容易、直观且便捷。     

Simulink动态仿真中Stateflow建模存在问题

Matlab是现在工程领域中一套最为出色的科学计算软件,Simulink/Stateflow是Matlab自带的工具箱,主要用来实现对工程问题的模型化和动态仿真。Simulink/Stateflow基于模块化设计和系统级仿真的具体思想,使得建模仿真如同搭积木一样简单。Simulink/Stateflow对仿真的实现可以应用于动力系统、信号控制、通信设计等各个领域的研究中。但它也有不完善的地方,如果使用不慎就会得出错误的仿真结果。该文就以一个很简单的例子来进行了说明,并在此基础上提出了解决方案。     

Simulink/Stateflow仿真程序的HLA兼容性改造设计

该文从数据结构入手，宏观分析了Simulink／Stateflow仿真模型在进行HLA(高层体系结构)兼容性改造过程中所涉及的主要问题及步骤。主要包括由RTW(实时工作室)所生成的Simulink／Stmeflow模型C代码的通用运行框架，模型程序的SOM(仿真对象模型)开发，模型程序的HLA软件接口设计等。特别是针对HLA软件接口的设计与实现过程中存在许多重复性的工作，提供了一个将Simulink／Stateflow模型程序自动转化为HLA联邦成员且能适用于不同联邦的工具软件框架结构，从而为基于HAL仿真系统的Simulink／Stateflow仿真模型开发提供一条优化途径。     

基于Simulink／Stateflow模型的嵌入式软件开发研究

当前在控制领域内使用Simulink／Stateflow建模并以RTW生成指定代码的方式代替传统嵌入式软件开发方法已形成趋势。这是由于基于Simulink模型的嵌入式软件开发大大节省了软件开发的人力、物力和时间成本。本文针对在Matlab环境下如何使用Simulink／Stateflow建立模型,实现嵌入式软件开发的过程进行了详细介绍。     

蒸汽锅炉安全联锁系统的建模及校验

蒸汽锅炉实时控制系统一股用于控制炉内水位．使其保持在特定的范围内。为了加强环保和安全监测，蒸汽锅炉实时控制系统等过程控制中的有关场所要设置监测报警及安全联锁系统．所以其安全联锁系统的设计与验证也非常重要。本文采用Stateflow工具在有限状态机理论的基础上，建立蒸汽锅炉安全联锁系统的离散模型并根据输入输出验证其安全性．并结合Sf2smv工具从Stateflow产生Smv(Symbolic Model Verifier)程序。自动检验Stateflow状态图的属性，以此来检验蒸汽锅炉安全联锁系统的设计是否合理。     

基于MATLAB仿真环境实现防抱制动控制逻辑

寻找理想的控制逻辑规律是车辆防抱制动系统研究与开发的重点。本研究在MATLAB／Simulink仿真环境下实现了带防抱制动系统（ABS）的车辆动力学模型计算机仿真。针对防抱控制器的关键－防抱制动控制逻辑建立了Stateflow有限状态机模型，并结合四通道防抱制动系统实现了其Stateflow模型的设计和调试，达到满意的控制效果。     

有限状态机在导弹防御系统分析中的应用

介绍了有限状态机的基本概念,基于UML详细分析了导弹防御系统的作战过程.由于UML状态机无法直接运行而实现系统状态的动态转换,研究了基于有限状态机理论的图形化建模与仿真工具Stateflow.在分析了导弹防御系统作战过程中各子系统状态以及状态转换的基础上建立了Stateflow状态机模型,并与Matlab其它建模和仿真工具有机结合,建立了导弹防御系统的仿真模型,该模型可实现不同条件下系统性能的分析与评估.     

基于Stateflow的设备维修过程仿真研究

设备维修是工业企业的一项复杂工作,提高设备维修的效率对减少维修周期、节省企业成本具有重要意义。针对传统计划评审技术（PERT）在设备维修过程工期计算和关键路线分析等方面的局限,提出了基于Stateflow的设备维修过程仿真方法,进行了实例分析。仿真结果表明,基于Stateflow的仿真分析方法能够有效评估设备维修过程的完工时间和关键线路的分布情况,具有可视化、流程化和层次化的特点。     

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.