MS的参数化设计模块用于零件尺寸自动标注

本文介绍了采用ＭＩＣＲＯＳＴＡＴＩＯＮ参数化设计增值模块ＰＬＴＯＯＬ进行零件尺寸自动化标注的方法。将字符作为视图处理，动态地建立字符图形的描述文件。用户只需在参数化设计模志中增加一个尺寸描述文件，即可实现尺寸标注功能。本方法为方便地进入ＭＩＣＲＯＳＴＡＴＩＯＮ核心提供了一条作径，也可供其它ＣＡＤ软件借鉴。     

DETECTING AND DETERMINING THE CHARACTERISTIC POINTS ON THE SURFACE／SURFACE INTERSECTIONS

ＤＥＴＥＣＴＩＮＧＡＮＤＤＥＴＥＲＭＩＮＩＮＧＴＨＥＣＨＡＲＡＣＴＥＲＩＳＴＩＣＰＯＩＮＴＳＯＮＴＨＥＳＵＲＦＡＣＥ／ＳＵＲＦＡＣＥＩＮＴＥＲＳＥＣＴＩＯＮＳＺｅｎｇＸｉａｎｇｌｉｎ；ＷａｎｇＱｉｆｕ；ＨｕａｎｇＺｈｅｎｇｄｏｎｇ；ＺｈｏｕＪｉＤＥＴ...     

非线性对流－扩散方程的高阶特征－差分格式及其误差估计

非线性对流－扩散方程的高阶特征－差分格式及其误差估计由同顺（南开大学数学系）ＨＩＧＨ－ＯＲＤＥＲＣＨＡＲＡＣＴＥＲＩＳＴＩＣ－ＤＩＦＦＥＲＥＮＣＥＳＣＨＥＭＥＳＦＯＲＴＨＥＮＯＮＬＩＮＥＡＲＣＯＮＶＥＣＴＩＯＮ－ＤＩＦＦＵＳＩＯＮＥＱＵＡＴＩＯＮＡＮ...     

可编程ASIC技术——现代电子系统设计的新潮流

介绍了可编程ＡＳＩＣ的现状与发展，论述了可编程ＡＳＩＣ的选择和开发步骤。在可编程ＡＳＩＣ的开发中，层次结构化设计的广泛采用。最后对ＴＯＰ－ＤＯＷＮ和ＢＯＴＴＯＭ－ＵＰ设计方法作简要介绍。     

解二维扩散方程的分步分组显式格式

解二维扩散方程的分步分组显式格式陆金甫，曾光（清华大学应用数学系）ＦＲＡＣＴＩＯＮＡＬＳＴＥＰＳＧＲＯＵＰＥＸＰＬＩＣＩＴＭＥＴＨＯＤＳＦＯＲ２ＤＤＩＦＦＵＳＩＯＮＥＱＵＡＴＩＯＮＳ￥ＬｕＪｉｎ－ｆｕ；ＺｅｎｇＧｕａｎｇ（ＴｓｉｎｇｈｕａＵｎｉｖｅｒ...     

基于VHDL高级综合的条码阅读预处理器的FPGA设计

文中定义了条码阅读处理器的功能，给出其ＶＨＤＬ语言的行为源描述，讨论了在ＶＨＤＬ高级综合系统ＨＬＳ／ＢＩＴ的支持下面向ＦＰＧＡ，从算法级行为描述开始，自顶向下地进行条码阅读预处理器的设计过程，从中可见，ＶＨＤＬ高级综合和ＦＰＧＡ的结合，是一种简化设计复杂度，提高设计时效的ＡＳＩＣ的简便方法。     

结构动力响应计算的瞬时界面关连矩阵法

结构动力响应计算的瞬时界面关连矩阵法杜国君，彭天国（东北重型机械学院）ＴＲＡＮＳＩＥＮＴＢＯＵＮＤＡＲＹＳＵＲＦＡＣＥＲＥＬＥＶＡＮＴＭＡＴＲＩＸＭＥＴＨＯＤＦＯＲＣＡＬＣＵＬＡＴＩＮＧＤＹＮＡＭＩＣＲＥＳＰＯＮＳＥＯＦＳＴＲＵＣＴＵＲＥ￥ＤｕＧｕｏ...     

用VISUAL BASIC实现数据采集卡的实时控制

本文介绍了利用ＶＩＳＵＡＬ ＢＡＳＩＣ实现数据采集卡实时控制的程序设计过程。设计中先用Ｃ＋＋语言编制了生成采样控制ＤＬＬ，然后用ＶＢ调用该ＤＬＬ完成采集卡的实时控制任务对ＣＴＳ－３６万用电子试验机进行输出采样。     

A DIRECTED GRAPH ALGORITHM OF VARIATIONAL GEOMETRY BASED ON GEOMETRIC REASONING

ＡＤＩＲＥＣＴＥＤＧＲＡＰＨＡＬＧＯＲＩＴＨＭＯＦＶＡＲＩＡＴＩＯＮＡＬＧＥＯＭＥＴＲＹＢＡＳＥＤＯＮＧＥＯＭＥＴＲＩＣＲＥＡＳＯＮＩＮＧＸｕｅＨｏｎｇｙｕａｎＳＭＯＯＴＨＳＵＲＦＡＣＥＩＮＴＥＲＰＯＬＡＴＩＯＮＯＶＥＲＡＲＢＩＴＲＡＲＹＴＲＩＡＮＧ...     

实验曲线的自动分段拟合

实验曲线的自动分段拟合陈金友（酒泉卫星发射中心）ＡＵＴＯＭＡＴＩＣＳＥＣＴＩＯＮＡＬＦＩＴＴＩＮＧＯＦＴＨＥＭＥＡＳＵＲＥＤＤＡＴＡ￥ＣｈｅｎＪｉｎ－ｙｏｕ（ＣｈｉｎａＪｉｕｑｕａｎＳａｔｅｌｌｉｔｅＬａｕｎｃｋＣｅｎｔｅｒ）Ａｂｓｔｒａｃｔ：Ｔｈｉ...     

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.