CONSTRUCTING RECTANGULAR NURBS SURFACES IN TERMS OF THREE OF ITS FOUR BOUNDARY CURVES

ＣＯＮＳＴＲＵＣＴＩＮＧＲＥＣＴＡＮＧＵＬＡＲＮＵＲＢＳＳＵＲＦＡＣＥＳＩＮＴＥＲＭＳＯＦＴＨＲＥＥＯＦＩＴＳＦＯＵＲＢＯＵＮＤＡＲＹＣＵＲＶＥＳＷａｎｇＬａｚｈｕ；ＺｈｕＸｉｎｘｉｏｎｇＣＯＮＳＴＲＵＣＴＩＮＧＲＥＣＴＡＮＧＵＬＡＲＮＵＲＢＳＳＵＲ...     

MICROWAVE RADIOMETER AND ITS APPLICATION TO SNOW MEASUREMENT

The microwave radiactivproperty of snow is studied using self-developed three band microwave radiometers. Experiments were carried out repeatedly from 1986 to 1989 in Northeast China The relation between brightness temperature and observation angle was obtained with both vertical and horizontal polarizations. The curves corresponding brightness temperature and snow depth were also drawn out for different frequency bands. The results demonstrate the application potential of the multifrequency microwave radiometer in this area.     

A CONFIGURATION SYSTEM FOR FASTENER DESIGN（AN APPROACH TOWARDS COMPUTER AIDED CONCEPTUAL DESIGN）

ＡＣＯＮＦＩＧＵＲＡＴＩＯＮＳＹＳＴＥＭＦＯＲＦＡＳＴＥＮＥＲＤＥＳＩＧＮ（ＡＮＡＰＰＲＯＡＣＨＴＯＷＡＲＤＳＣＯＭＰＵＴＥＲＡＩＤＥＤＣＯＮＣＥＰＴＵＡＬＤＥＳＩＧＮ）ＧｕａｎｇＺｈｏｎｇ；ＭｉｋｅＤｏｏｎｅｒＡＣＯＮＦＩＧＵＲＡＴＩＯＮＳＹＳＴＥ...     

LOCAL INTERPOLATING BLENDED B－SPLINE SURFACE AND ITS CONVERSION TO THE NURBS SURFACE

ＬＯＣＡＬＩＮＴＥＲＰＯＬＡＴＩＮＧＢＬＥＮＤＥＤＢ－ＳＰＬＩＮＥＳＵＲＦＡＣＥＡＮＤＩＴＳＣＯＮＶＥＲＳＩＯＮＴＯＴＨＥＮＵＲＢＳＳＵＲＦＡＣＥＷａｎｇＬａｚｈｕ；ＺｈｕＸｉｎｘｉｏｎｇＬＯＣＡＬＩＮＴＥＲＰＯＬＡＴＩＮＧＢＬＥＮＤＥＤＢ－ＳＰＬＩ...     

A NEW DISTRIBUTED PLATFORM FOR CLIENT-SIDE FUSION OF WEB APPLICATIONS AND NATURAL MODALITIES—A MULTIMODAL WEB PLATFORM

Web-based solutions and interfaces should be easy, more intuitive, and should also adapt to the natural and cognitive information processing and presentation capabilities of humans. Today, human-controlled multimodal systems with multimodal interfaces are possible. They allow for a more natural and more advanced exchange of information between man and machine. The fusion of web-based solutions with natural modalities is therefore an effective solution for users who would like to access services and web content in a more natural way. This article presents a novel multimodal web platform (MWP) that enables flexible migration from traditionally closed and purpose-oriented multimodal systems to the wider scope offered by web applications. The MWP helps to overcome problems of interoperability, compatibility, and integration that usually accompany migrations from standard (task-oriented) applications to web-based solutions and multiservice networks, thus enabling the enrichment of general web-based user interfaces with several advanced natural modalities in order to communicate and exchange information. The MWP is a system in which all modules are embedded within generic network-based architecture. When using it, the fusion of user front ends with new modalities requires as little intervention to the code of the web application as possible. The fusion is implemented within user front ends and retains the web-application code and its functionalities intact.     

NURBS曲线和曲面的递推矩阵及其应用

本文运用Ｔｏｅｐｌｉｔｚ矩阵，导出了任意非均匀Ｂ样条的递推矩阵公式；提出了一个计算非均匀Ｂ样条基矩阵的新方法，该递推矩阵公式即可以用于ＮＵＲＢＳ曲线和曲面的分析计算，也可以用于Ｂｅｚｉｅｒ，均匀和非均匀Ｂ样条曲线及曲面的分析计算。     

一种概念获取算法CAP及其应用

本文提出以实例空间中状态出现的概率大小作为启发式信息,以提供的正例集为依据进行分类的概念获取算法CAP.该算法是一种二叉树的分类方法,输出的分类规则是一个谓词演算表达式.CAP算法既适用于给定概念的正例集,也适用于仅提供正例集的情况,并能根据用户对精度的不同要求得到不同精度的分类规则.本文还给出CAP算法应用实例,并和著名的ID3算法进行了比较,CAP可用于一个自动知识获取系统.     

USING NUMERICAL METHOD TO GENERATE BLENDING SURFACES

ＵＳＩＮＧＮＵＭＥＲＩＣＡＬＭＥＴＨＯＤＴＯＧＥＮＥＲＡＴＥＢＬＥＮＤＩＮＧＳＵＲＦＡＣＥＳ￥ＺｈａｎｇＸｉａｎ；ＺｈｕＸｉｎｘｉｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｎｕｆａｃｔｕｒｉｎｇＥｎｇｉｎｅｅｒｉｎｇＢｅｉｊｉｎｇＵｎｉｖｅｒｓｉｔｙｏｆＡ...     

矩形域上有理Bezier曲面的广义离散算法及其应用

本文推广了有理Ｂｅｚｉｅｒ曲面的离散算法，得到了沿非等参数离散矩形域上有理Ｂｅｚｉｅｒ曲面的割角算法，并给出了从有理Ｂｅｚｉｅｒ矩形片到有理Ｂｅｚｉｅｒ三角片的割角转换。     

An Arbitrary Triangular Bezier Sudivision Slgorithm and its Applications

ＡＮＡＲＢＩＴＲＡＲＹＴＲＩＡＮＧＵＬＡＲＢＥＺＩＥＲＳＵＢＤＩＶＩＳＩＯＮＡＬＧＯＲＩＴＨＭＡＮＤＩＴＳＡＰＰＬＩＣＡＴＩＯＮＳＬｕＸｉａｏｌｉｎ；ＭａＬｉｚｈｕａｎｇ；ＨｅＺｈｉｊｕｎＡＮＡＲＢＩＴＲＡＲＹＴＲＩＡＮＧＵＬＡＲＢＥＺＩＥＲＳＵＢＤ...     

改进型遗传算法及其在数据挖掘中的应用

文中在简单遗传算法的基础上，利用改进的算法进行关联规则的发现和数据库中特征项权重的发现，通过对农业气象数据库的实验，力求解决遗传算法中的早熟等问题。     

M序列的软件实现及在微机加密中的应用

本文给出了一种用汇编语言（８０８６／８０８８）产生任意级Ｍ序列的软件实现。并研究了其在微机数据加密中的应用。实践表明，与其他微机软件加密的方法相比，用Ｍ序列加密信息数据具有实时性好，可靠性高，通过性强等优点。     

直线与刀具扫描体求交算法及其应用研究

直线与刀具扫描体的交点问题是数控图形验证，加工过程仿真技术中的核心问题，本文根据五坐标联动机床的运动特点，把刀具扫描体表达成几组简单曲面的组合，利用直线与这几类曲交点来求解直线与刀具扫描体的交点。利用该算法，我们开发了一个用于检验五坐标铣削加工精度的计算机领导具软件。加工与仿真的实践证明，该算法计算正确正确，对进一步研制开发加工过程仿真系统有重要意义。     

一种基于Rough集理论的数据过滤方法

Ｒｏｕｔｈ集理论是一种处理不确定模糊知识的重要工具,在对Ｒｏｕｇｈ集理论进行深入研究的基础上,提出了一种基于Ｒｏｕｇｈ集理论的这滤算法。该处 工硒思想是基于Ｐ－确定的等价类的合并,算法直观,计算简便,理论和实验表明,该算法能够减低信息系统中信息的粒度,在保持规则近似质量不变的前提下,有效地提高规则的统计意义和预测强度。     

SDT算法及其在过程数据压缩中的应用

首先阐述了过程数据压缩的重要性及特点，然后介绍了SDT（Swinging Door Trending)算法的基本原理，给出了离线压缩、在线压缩及信号重建的软件框图，最后介绍了SDT算法的应用，并得出了一些结论。希望对过程数据压缩的研究和应用提供一定的帮助。