一体化智能并网调试支持平台架构设计与实现

为了解决传统电网并网调试存在的效率低、可靠性差等问题,本文设计了一种一体化智能并网调试支持平台的实现架构。该方案平台提供综合数据中心以及开放标准总线,为并网测试系统的协同交互、信息共享、功能模块整合等一体化功能实现提供了解决思路。实践结果表明,该方案实现了并网调试业务的信息融合、业务服务模型,为并网调试的网络化操控提供了技术支撑。     

基于Eclipse平台的嵌入式远程调试软件实现

传统嵌入式系统大多采用命令行打印的方式进行开发调试,导致开发周期延长。针对这个问题,基于Eclipse平台和CDT插件设计并实现了一套可视化的嵌入式远程调试软件。主机端的调试总控通过MI接口封装通用调试器GDB,按照DWARF调试信息格式提取目标文件中的调试信息,并通过RSP协议发送调试命令,目标机端的调试代理负责接收并处理调试命令。着重分析了调试总控的设计和调试代理的实现要点,最终实现了对MPC8270上目标程序的源码级远程调试。     

智能复用EDA设计信息及调试文档自动生成技术

针对电子电路产品设计中调试文档编制存在的各种弊端,提出了一种智能复用EDA设计信息的调试文档自动生成技术。通过融合异构EDA设计数据,智能复用设计数据中的调试信息,利用多个调试文档库之间的关联性,自动、快速地生成各类调试文档。该技术实现的系统已经在电子电路设计中得到应用,结果表明,该技术不仅优化了调试流程,还提高了文档编制的自动性、快速性和规范性。     

基于仿真器的源码级调试器设计与实现

根据嵌入式开发的特点,采用构件组装技术对基于仿真器的调试器进行设计,模块化各个部件,减少仿真器和调试器的耦合性,使基于仿真器的调试器能够适应多种仿真器,具有调试信息存储和解耦功能模块的能力,实现了调试功能的可扩展性.此外,结合当前主流调试技术,阐述了ELF文件格式,对源码级调试器的原理、使用方法和运行性能进行了重点分析.     

一种DWARF格式行号调试信息解析方法

调试系统是嵌入式芯片配套基础软件的重要组成部分。而调试系统的核心是对可执行文件中调试信息的解析以及对调试信息的管理。DWARF调试信息格式是一种普遍使用的调试信息格式,它可以以压缩的二进制格式存储调试信息,并具有丰富的表达形式。BWDSP芯片是一款自主开发的高性能通用DSP,其调试系统使用一种自主创新的方法解析DWARF行号调试信息。经实践证明,该方法可以高效正确地解析出DWARF行号调试信息。     

基于MANET的移动节点RTU硬件系统设计与实现

近年来,MANET网络发展迅速,在紧急救援、军事通信等众多领域均有应用.论文以大型移动设备所组成的MANET网络为背景,以传感信息交互处理为需求,设计并实现了移动设备节点的数据处理与通信控制硬件系统.系统采用以ARM Cortex M0内核为MCU的嵌入式系统,电路板整体采用模块化设计,含供电系统、时钟系统、SDRAM、Flash、无线通信端口、串行接口、复位系统、调试接口、USB端口等电路模块.在节点移动的实验条件下验证了所设计系统的可用性与可靠性,能够满足开发项目的通信需求.     

SPARC平台模拟器源码级调试系统的研究与实现

软件模拟器采用软件思想模拟真实硬件工作情况,作为嵌入式系统研究的基础研发工具,被广泛应用于体系结构设计调优、软硬件协同设计领域。研究提出一种在SPARC指令集模拟器平台上实现源码级调试系统的方法,一方面该方法使用SPARC交叉调试器对运行于SPARC指令集模拟器上的应用程序进行源码级调试,有效避免了单独实现源码级调试器所带来的调试信息解析困难、可靠性难以验证的弊端;另一方面提出了在集成开发环境下源码级调试系统的高效集成机制,有效解决了进程间切换延时开销大、界面僵死等问题,为SPARC平台嵌入式系统开发人员提供了一种支持图形化界面的高可靠性源码级调试系统。通过具体实现分析,对整个调试系统进行了性能评估。     

一种DWARF格式C语言调试信息分析方法

DWARF格式是一种常见的调试信息格式,它以节点作为存储调试信息的基本单元。BWDSP系列芯片的调试系统使用一种自主可控的算法分析C语言的DWARF调试信息。该方法首先读取.debug_abbrev节区,获得节点的缩略信息。然后读取.debug_info节区,获取调试信息节点属性的取值,并把这些调试信息存储为内部数据结构。该算法已经在BWDSP系列芯片的调试系统中得到成功的使用,实践验证了其可行性与正确性。     

一种DWARF格式C语言调试信息分析方法

DWARF格式是一种常见的调试信息格式,它以节点作为存储调试信息的基本单元。BWDSP系列芯片的调试系统使用一种自主可控的算法分析C语言的DWARF调试信息。该方法首先读取.debug_abbrev节区,获得节点的缩略信息。然后读取.debug_info节区,获取调试信息节点属性的取值,并把这些调试信息存储为内部数据结构。该算法已经在BWDSP系列芯片的调试系统中得到成功的使用,实践验证了其可行性与正确性。     

Java卡调试平台的研究及实现

从计算机语言源代码级调试的一般性原理和概念入手,深入分析了Java卡规范和Java平台调试体系规范,提供了一个合理的Java仁调试平台设计方案。此外,文章还详细描述了调试平台实施所涉及到的要点,包括运行时调试信息的组织方式和使用方法、断点实现技术、单步调试实现技术等。实验结果表明,该调试平台设计方案是可行的。     

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.