Visual Graph动画在“电气控制与PLC技术”教学中的应用

Visual Graph是近年来出现的新型图形交互和动画展示技术,具有直观性好、交互性强等优点。文章从“电气控制与PLC技术”课程的实际教学效果出发,讨论了课程动画辅助教学的需求分析和规划,并展示了典型动画设计案例,供广大教学人员参考。

基于Visual Graph的电力图形系统开发

针对传统面对对象的图形系统开发周期长、维护困难的缺点,基于通用图形开发平台——VisualGraph,提出了一种简便、清晰的面向图形对象的建模新方法。用可视化图形类建立电力元件并组成电网结构图,快速开发出图形系统。建模及过程全部实现可视化,十分快捷。实际应用表明,该方法是有效的,所开发的图形系统具有良好的实际应用前景。

基于Visual Graph平台的管路系统开发

虚拟管路系统是一种较为独特的仿真系统,不仅要求反映管路系统的静态结构,而且需要表现管路控制关系和管路流体的动态流动效果。介绍了使用Visual Graph平台进行管路系统开发的主要工作过程,阐述了主要工作流程、管路构件的建模与设计以及视图缩放的设计。

基于Visual Graph的电气控制仿真

主要介绍软件VisualGraph在电气控制电路仿真方面的应用。以“电动机正反转控制”为例,说明如何利用VisualGraph实现对电气控制电路的仿真。

基于Visual Graph图形控件的煤矿安全可视化系统实现研究

在现有风网解算可视化系统单机版的基础之上,探讨了新的具有良好封装性、高度可集成性、松散耦合特点的煤矿安全可视化模型。该模型的可视化结合Visual Graph图形控件实现,而对风网解算算法使用Web服务进行封装。并对系统在C/S和B/S两种模式下的实现进行了详细的说明。

Dynamic graph exploration by interactively linked node-link diagrams and matrix visualizations

The visualization of dynamic graphs is a challenging task owing to the various properties of the underlying relational data and the additional time-varying property.For sparse and small graphs,the most efficient approach to such visualization is node-link diagrams,whereas for dense graphs with attached data,adjacency matrices might be the better choice.Because graphs can contain both properties,being globally sparse and locally dense,a combination of several visual metaphors as well as static and dynamic visualizations is beneficial.In this paper,a visually and algorithmically scalable approach that provides views and perspectives on graphs as interactively linked node-link and adjacency matrix visualizations is described.As the novelty of this technique,insights such as clusters or anomalies from one or several combined views can be used to influence the layout or reordering of the other views.Moreover,the importance of nodes and node groups can be detected,computed,and visualized by considering several layout and reordering properties in combination as well as different edge properties for the same set of nodes.As an additional feature set,an automatic identification of groups,clusters,and outliers is provided over time,and based on the visual outcome of the node-link and matrix visualizations,the repertoire of the supported layout and matrix reordering techniques is extended,and more interaction techniques are provided when considering the dynamics of the graph data.Finally,a small user experiment was conducted to investigate the usability of the proposed approach.The usefulness of the proposed tool is illustrated by applying it to a graph dataset,such as e co-authorships,co-citations,and a Comprehensible Perl Archive Network distribution.

Interactive multigraph visualization and exploration with a two-phase strategy

While it is very reasonable to use a multigraph consisting of multiple edges between vertices to represent various relationships, the multigraph has not drawn much attention in research. To visualize such a multigraph, a clear layout representing a global structure is of great importance, and interactive visual analysis which allows the multiple edges to be adjusted in appropriate ways for detailed presentation is also essential. A novel interactive two-phase approach to visualizing and exploring multigraph is proposed. The approach consists of two phases： the first phase improves the previous popular works on force-directed methods to produce a brief drawing for the aggregation graph of the input multigraph, while the second phase proposes two interactive strategies, the magnifier model and the thematic-oriented subgraph model. The former highlights the internal details of an aggregation edge which is selected interactively by user, and draws the details in a magnifying view by cubic Bezier curves; the latter highlights only the thematic subgraph consisting of the selected multiple edges that the user concerns. The efficiency of the proposed approach is demonstrated with a real-world multigraph dataset and how it is used effectively is discussed for various potential applications.

Using Luhn’s Automatic Abstract Method to Create Graphs of Words for Document Visualization

Visualization methods for single documents are either too simple, considering word frequency only, or depend on syntactic and semantic information bases to be more useful. This paper presents an intermediary approach, based on H. P. Luhn’s automatic abstract creation algorithm, and intends to aggregate more information to document visualization than word counting methods do without the need of external sources. The method takes pairs of relevant words and computes the linkage force between them. Relevant words become vertices and links become edges in the resulting graph.

The Importance of Visual Identity Graphic Design in Cities

The identity system depends on tangible architecture, landscape roads and so on, but it doesn＇ t equal to the supplement of its subject but an indispensable constituent part. As the finishing touch of the whole urban space, by means of design of elements such as symbols, graphs, characters and colors as well as integration of various factors, the identity system reflects the urban specialty, conveys urban features related to history, geography, culture and emotion. The identity system provides suitable space environment to people through application of concrete symbols, graphs, characters and colors, in addition, it also mirrors that the designing culture of a city equals to its design concept with the combination of the historical culture of this city. A modem city shall be provided with such function, that is, it shall possess a whole set of well-designed and scientific-planned indication mechanism to help those wandering pedestrians to indicate direction and find their way successfully. It shall not only serve the mass, realize inter-coordination among people, identity facility and space environment to make people＇ s living environment more comfortable and convenient, but also it constitutes the vital cartier to spread local culture and model urban brand.

Visualization of Personal Interest Graph from Social Network

The advent of the time of big data along with social networks makes the visualization and analysis of networks information become increasingly important in many fields. Based on the information from social networks, the idea of information visualization and development of tools are presented. Popular social network micro-blog （＇Weibo＇） is chosen to realize the process of users＇ interest and communications data analysis. User interest visualization methods are discussed and chosen and programs are developed to collect users＇ interest and describe it by graph. The visualization results may be used to provide the commercial recommendation or social investigation application for decision makers.

Intermediate Representation Using Graph Visualization Software

In this paper, a method to initiate, develop and visualize an abstract syntax tree (AST) in C++ source code is presented. The approach is in chronological order starting with collection of program codes as a string and split into individual characters using regular expression. This will be followed by separating the token grammar using best first search (BFS) algorithm to determine node having lowest value, lastly followed by graph presentation of intermediate representation achieved with the help of graph visualization software (GraphViz) while former is implemented using python programming language version 3. The efficacy of our approach is used in analyzing C++ code and yielded a satisfactory result.

基于文献计量法的杜鹃花研究现状及热点分析

杜鹃花(Rhododendron)是世界著名的观赏花卉,因其重要的观赏价值、经济价值而备受关注。基于Web of Science核心合集和CNKI数据库,利用CiteSpace软件对近二十年国内外杜鹃花的研究现状进行分析,总结了杜鹃花研究领域的前沿热点及发展趋势。研究发现:(1)近二十年关于杜鹃花的研究型论文以英文为主,且英文文献数量呈现快速增加的趋势,而中文论文在前十年快速增加,近十年呈波动趋势;(2)美国是英文文献中贡献最多的国家,中国科学院(Chinese Academy of Sciences)是中英文发文量最高的机构,陈训和Peter W.Fritsch分别是发表中文和英文文献最多的学者;(3)中、英文文献早期在杜鹃花研究领域的关注点有所不同,中文文献主要集中在杜鹃花品种培育、扦插栽培和抗性研究,英文文献则更加关注杜鹃花品种培育从分子层面上的实施,以及杜鹃花野外资源的保护。近年来,气候变化下杜鹃花的响应及品种培育已成为研究热点,建议在今后的工作中加强对全球变化下杜鹃花的响应以及抗性育种的研究。

基于知识图谱的国内外BIM可视化分析

[目的]通过可视化分析,全面揭示国内外BIM(建筑信息模型)领域的研究现状、热点趋势及演进动态。[方法]基于文献计量学方法,针对CNKI(中国知网)数据库和Web of Science核心合集数据库筛选出的共计2919篇文献,应用VOSviewer软件进行关键词共现分析,识别当前BIM领域的研究热点和主题分布。通过作者共现和国家共现分析,评估研究人员的合作模式和跨机构交流合作的广度与深度。基于时间演进分析,探讨BIM领域研究的发展趋势和阶段性特征。[结果及结论]从文献发文量与被引量来看,中国BIM领域研究实力更为突出,但跨机构交流合作相较其他国家仍然不足,且BIM+高新技术等前沿领域的交叉发展有待加强;从关键词共现、作者共现结果来看,国内外研究热点从初期的理论探究,逐渐转向工程应用,直至现阶段呈现多专业领域、集成化、绿色化、智能化等多角度协同发展态势。

基于知识图谱可视化的三山五园学术领域知识分析

三山五园学术研究是北京文化特征与文脉传承研究的重要学术领域,自三山五园入选国家文物保护利用示范区以来,其研究深度和广度都得到了显著提升。利用知识图谱,在深入分析与解读三山五园学术研究现状的基础上,系统梳理并展示了领域研究的整体框架和脉络,明确揭示了研究的主要方向、热点及发展趋势,评估了研究者在该领域的学术水平和影响力,为推动三山五园的保护和利用提供了有力支持,也为领域学术研究向更深层次发展提供了参考依据。

基于Visual Studio与Matlab集成的脑电数据库管理和分析系统

为日益庞大的脑电数据信息提供直观易操作的管理方式,为进一步分析处理提供数据管理基础。采用Visual Studio开发友好的用户界面,结合Access进行病患基本信息的数据管理,结合Matlab进行后台的数据分析处理,在管理脑电数据的基础上,实现分析和辅助诊断的功能。从设计到实施,基本完成了脑电数据库管理系统的建立。但是系统运行有局限性,需要MATLAB的安装环境,下一步会逐步完善实现脱离MATLAB运行。

Visual FoxPro6.0中数据转换成图表输出的方法

随着计算机技术的发展 ,用数据库来管理各类数据已经越来越普遍 ,本文用 VisualFox Pro6.0作为工具 ,为数据库应用系统中的动态数据提供一种转换成图表输出的简单方法。

用Windows98和Visual Foxpro制作有机化学实验装置图课件

用 Windows98中的画图绘制有机化学实验仪器图。将仪器图以二进制形式存入数据库,利用 Visual Fo-xpro 的管理功能,以映射方式管理仪器图库,调用仪器图库文件组装有机化学实验装置图。

基于Visual Basic 6.0的浮阀塔软件设计

针对浮阀塔手工设计效率低、计算结果不精确等问题,结合可视化编程语言Visual Basic 6.0开发环境在机电系统软件开发中的优缺点,以手工设计方法与工程实践为基础,利用Visual Basic 6.0开发浮阀塔设计软件,实现了浮阀塔结构的快速设计,快速绘制浮阀塔板布阀图及负荷性能图,并能实现EXCEL表输出结构计算参数和水力计算参数。研究结果及应用分析表明,所设计的基于Visual Basic 6.0的浮阀塔软件界面友好、计算结果准确,软件可供工程设计或教学使用,所采用的方法和技术对其他工业应用软件的开发也具有一定的参考价值。

基于中国知网数据库(CNKI)的捏脊研究领域知识图谱可视化分析

目的:应用CiteSpace软件对2000年起至2023年中国知网数据库捏脊领域的研究文献进行系统性可视化分析,继而了解捏脊领域的研究现状,并进一步探求捏脊疗法的研究热点及该领域未来的发展趋势。方法:检索中国知网2000年1月1日至2023年10月1日所收录的捏脊研究文献,根据纳入和排除标准筛选后运用CiteSpace6.1.R6软件提取作者、机构与关键词信息绘制相关知识图谱并进行分析。结果:①共纳入文献814篇,从2020年开始发文量出现了整体下降的趋势。发文量最高的机构是广州中医药大学,但各机构缺乏合作交流,吴高鑫团队、王红团队发文量靠前。②关键词共现、聚类及突现结果显示目前研究热点集中于儿科病症的临床疗效观察,譬如厌食、腹泻与小儿脑瘫等。结论:捏脊研究已具规模且侧重于临床疗效评价,且以呼吸、消化、泌尿系统中的应用居多。同时,捏脊疗法的免疫机制及脑功能效应等可能成为未来捏脊的研究热点。

国内外乡村景观研究进展与热点可视化分析

随着乡村振兴和美丽乡村政策的推动,乡村景观成为研究热点。文章借助CiteSpace软件对CNKI数据库与WoS数据库中2001—2023年乡村景观研究文献进行可视化分析。结果表明,国内研究者主要聚焦政策、策略、举措、评价、规划等五方向,研究主题为乡村景观、乡村旅游、乡村振兴、美丽乡村、景观规划等;国外研究聚焦于旅游、发展、分析,研究主题为可持续发展、乡村发展、乡村旅游、乡村振兴等。国外目前研究热点是乡村振兴、土地利用变化、动机。文章研究结果有助于了解当今乡村景观热点与趋势,为乡村振兴等领域提供参照基础与方向。