个性化Web信息代理的研究与开发

介绍了在Web信息检索过程中通过个性化信息代理(Agent)实现个性化信息反馈的工作、提出了信息Agent模型，涉及元搜索引擎的实现和个性化偏好模型的建立，且通过主动服务代理实现个人偏好查询结果的推送．提高了在Web信息检索过程中系统随用户关注程度和关注领域不断变化而调整信息反馈的能力，并在此设计基础上实现了一个原型系统．     

中国古代工程图学及其现代意义

中国是一个具有丰富图学传统的国家 ,工程图学是中国科学技术之荦荦大者。中国古代工程图学的成就包括“卓识名理 ,独见别裁”的图学思想及“至详至悉 ,毫发不爽”的图学理论和绘制技术等。中国古代工程图学具有重要的历史价值和现代意义     

中国传统图形与现代包装设计

中国传统图形蕴含了中国古代传统文化的精髓,中国古文化的意境在传统的图形中得以浓缩升华。现代设计中对传统图形的再创造的应用,不是简单符号的复制,而是对传统图形的取形,延意和传神。现代技术、新的观念与思维方式的导入,为传统图形在包装设计的现代化提供了更多的思考角度和设计空间。     

多媒体教学软件中图形数据的一种无损压缩方法

本文针对教学软件中图形的特点，利用熵分割法，提出了一种图形数据的无损压缩方法，该方法在常规RLE压缩编码的基础进行改进，使被压缩数据的重复次数巅64个提高到128个，该方法能对制作图形进行有效压缩。     

在图学教育中培养学生的逻辑思维

几何推理的教育是以概念、图形、几何语言的教育为基础的,在整个学习过程中,学生要接触到很多的概念和很多的标准,所以要在课程的初步阶段中多引用一些具体的例子,配合多媒体课件,以培养学生的逻辑兴趣.     

The Effect of Graphics on Environmental Health Risk Beliefs, Emotions, Behavioral Intentions, and Recall

Lay people have difficulty understanding the meaning of environmental health risk information. Visual images can use features that leverage visual perception capabilities and semiotic conventions to promote meaningful comprehension. Such evidence-based features were employed to develop two images of a color-coded visual scale to convey drinking water test results. The effect of these images and a typical alphanumeric (AN) lab report were explored in a repeated measures randomized trial among 261 undergraduates. Outcome measures included risk beliefs, emotions, personal safety threshold, mitigation intentions, the durability of beliefs and intentions over time, and test result recall. The plain image conveyed the strongest risk message overall, likely due to increased visual salience. The more detailed graded image conveyed a stronger message than the AN format only for females. Images only prompted meaningful risk reduction intentions among participants with optimistically biased safety threshold beliefs. Fuzzy trace theory supported some findings as follow. Images appeared to promote the consolidation of beliefs over time from an initial meaning of safety to an integrated meaning of safety and health risk; emotion potentially shaped this process. Although the AN report fostered more accurate recall, images were related to more appropriate beliefs and intentions at both time points. Findings hinted at the potential for images to prompt appropriate beliefs independent of accurate factual knowledge. Overall, results indicate that images facilitated meaningful comprehension of environmental health risk information and suggest foci for further research.     

A Note on the Role of Independence in t Statistics Constructed From Linear Statistics in Regression Models

Although the semilogarithmic chart is one of the most effective, adaptable, and dependable graphic forms, it has been subject to neglect and indifference by contemporary chart makers. At the present time, a large proportion of chart makers are simply not aware of the distinctive qualities and unusual potentials of the semilogarithmic chart. In addition to discussions of the characteristics, applications, interpretation, advantages, and disadvantages of the semilogarithmic chart, actual cases of ill-chosen graphic forms and substandard charts are analyzed and compared, which clearly demonstrates the superiority of the semilogarithmic chart for many purposes.     

Establishing an Office of Scientific and Public Affairs

Procedures for high-interaction two-variable color mapping are described, whereby the user interacts with a graphic display to produce a color statistical map in a few seconds. The approach emphasizes the methodological benefits derived from the ability to examine the nature of the linkage between the statistical and spatial distributions of bivariate data. A series of examples illustrate this method.     

三次参数曲线拟合算法的优化研究

计算机图形学的许多专著都曾对三次参数曲线的参数拟合算法做了一些讨论,但在曲线方程确定下来后,如何进行快速的拟合,尚未有一个统一的优化算法.本文通过分析研究,给出了一种可适用于任意三次曲线段拟合的优化算法,较大地提高了计算效率.     

改革开放以来中北大学工程图学教学的改革与实践

通过对国内外图学教育现状的分析,归纳了近10年来国内图学教育改革的几个重要方面,分析了英、美、日三国工程图学教育的特色.介绍了改革开放以来我校图学教学的改革与实践,总结了我校在教学思想、课程内容、课程体系、教学方法、教学手段和教材等方面中所做的工作和取得的成绩.