图学思想与图学教育研究

从图学哲学、图学方法论、图学知识系统结构和图学发展史的角度出发 ,对图学思想与图学教育做了进一步的研究 ,讨论了图学思想的基本构成要素 :基元和整体、转化与整合、扩张与因袭 ,阐述了图学思想与图学教育两者之间的本质联系。     

含修正项的KdV方程是否一定存在孤子尾

含修正项的KdV方程是否一定存在孤子尾是最近孤子理论中争论的中心问题之一。给出几类含修正项的KdV方程的精确解 ,证明含修正项的KdV方程不一定存在孤子尾     

工程制图课程体系和教学方法改革的思路与实践

在阐述工程制图课程重要和特殊地位的基础上 ,概括指出了目前我国工程制图课程改革的三种教学模式 ,并列举了国外部分院校课程改革的实例 ,总结出教改共识。在明确课程改革基本思想的前提下 ,具体提出课程改革的总体思路和实践过程 :整合课程内容 ,形成新的课程体系 ,构建基础平台 ;改革教学手段 ,更新教学方法 ,保证教学质量 ,提高教学效率     

The birds and the bees: interactive graphics and problem solving in the teaching of statistics

Software which allows interactive exploration of graphical displays is widely available. In addition there now exist sophisticated authoring tools which allow more general textual and graphical material to be presented in computer-based form. The role of an authoring tool in providing a graphical interface to a strategy for solving simple statistical problems in the context of teaching is discussed. This interface allows a variety of resources to be integrated. Specific examples, including the use of dynamic graphical displays in exploring data and in communicating the meaning of a model, are proposed. These ideas are illustrated by a problem involving the identification of the sex of a herring gull.     

闻一多书籍装帧封面的视觉要素分析

闻一多是现代一位出色的装帧家,装帧作品虽然不多,但精品不少,尤以封面设计作品较为突出。闻一多的书籍封面设计,在视觉要素运用上,文字新颖多变,图形表现兼容并蓄,色彩运用简洁鲜明,为我国现代书籍装帧艺术的发展做出了贡献。     

民族地区推广国家通用语言文字与铸牢中华民族共同体意识的协同共进路径

坚定不移地在民族地区推广国家通用语言文字,全面提升其推广力度、普及程度和规范水平,是新时代铸牢中华民族共同体意识的关键环节。本文由语言的工具和文化功能、经济和社会价值阐释铸牢中华民族共同体意识的共同语言环境所具备的重大意义,分析民族地区国家通用语言文字推广的现状,提出国家通用语言文字普及深化的策略,后扶贫攻坚时期应将语言扶贫事业与乡村振兴战略有效衔接,持续推进民族地区的“精准推普”工作,充分释放推普典型和示范基地的引领力,积极动员各级力量以助力推普攻坚行动,从而实现推广国家通用语言文字与铸牢中华民族共同体意识的协同共进。     

工程制图课改革及创新教育实践的总结与分析

根据教育部对高等工业学校工程制图课程培养目标,对少学时工程制图教材传统内容进行改革构建,增加CAD二维和CAD三维绘图内容,删去画法几何图解法内容;删减了能用CAD三维绘图简便解决其它画几难题。注意对基础课教学实践形式的创新,将学生分为科研学习小组,用CAD三维和二维去完成一定难度的课题,提高学生的创新实践能力。     

ADE-4: a multivariate analysis and graphical display software

We present ADE-4, a multivariate analysis and graphical display software. Multivariate analysis methods available in ADE-4 include usual one-table methods like principal component analysis and correspondence analysis, spatial data analysis methods (using a total variance decomposition into local and global components, analogous to Moran and Geary indices), discriminant analysis and within/between groups analyses, many linear regression methods including lowess and polynomial regression, multiple and PLS (partial least squares) regression and orthogonal regression (principal component regression), projection methods like principal component analysis on instrumental variables, canonical correspondence analysis and many other variants, coinertia analysis and the RLQ method, and several three-way table (k-table) analysis methods. Graphical display techniques include an automatic collection of elementary graphics corresponding to groups of rows or to columns in the data table, thus providing a very efficient way for automatic k-table graphics and geographical mapping options. A dynamic graphic module allows interactive operations like searching, zooming, selection of points, and display of data values on factor maps. The user interface is simple and homogeneous among all the programs; this contributes to making the use of ADE-4 very easy for non- specialists in statistics, data analysis or computer science.     

On evaluating interactive statistical program packages

Most statistical computing for data analysis has come to depend upon statistical program packages. In recent years, interactive computing has become widespread both on large time-sharing systems and on mini-computers. This paper identifies ways in which interactive statistical software packages differ from batchoriented software and discusses evaluation considerations pertaining specifically to interactive packages.     

A Theory for Coloring Bivariate Statistical Maps

Consideration of some practical uses of statistical bivariate maps—for example, display of association between variables—leads to principles for making effective use of color to represent data values. Effective color schemes for bivariate maps are viewed as continuous transformations from color models to the unit square with appropriate restrictions involving hue, saturation, and brightness. Several schemes, including those used by the U.S. Census Bureau, are criticized on the basis of this theory.