面向虚拟试验的可视化对象建模工具设计与实现

虚拟试验在现代军工产品研发过程中显得日益重要,但基于虚拟试验的可视化建模却并未得到充分关注;针对虚拟试验在军工产品研发中的应用,设计了虚拟试验定义语言(VITA definition language,VDL),并基于该语言,设计并实现了面向虚拟试验的可视化建模工具,具有VDL代码和可视化模型双向转化、可视化建模等功能,可以简单快捷地实现VDL建模功能;首先介绍了VDL模型的定义,然后详细阐述了可视化对象建模的设计和实现方法;最后,通过应用实例验证了该可视化建模工具的实用性。     

3D空间复杂楼梯面可视化快速参数建模

空间复杂楼梯面的智能化建模问题是建筑、装饰等行业的难点、热点问题.本文以AutoCAD VBA作为开发工具,给出3D空间复杂楼梯面可视化参数快速建模方法,并对复杂楼梯面的生成算法与技巧进行了研究,使空间复杂楼梯面模型的设计更具敏捷化、智能化和可交互性.开发的设计程序可作为AutoCAD命令嵌入到AutoCAD绘图软件中,以提高用户的设计效率.     

可视化语言技术在软件开发中的应用

可视化语言技术比一维文本语言在描述软件组成方面具有优越性.由于图表和图形概念在系统建模中的广泛使用,可视化语言可以应用于需求分析、设计、测试和维护等软件开发的各个阶段.除了具有直观易见的特点之外,图文法在计算机上的精确建模和验证能力,为设计可视化语言提供了一个坚实的理论基础.讨论了可视化语言的形式理论基础,回顾了相关的可视化图形编程环境.特别提出了一种空间图文法,并且用该图文法定义了统一建模语言的行为语义.基于空间图文法,开发了一种基于模式驱动的框架,以帮助软件架构与设计.     

基于UML系统分析的关系数据库设计

针对系统开发中业务分析、软件开发与数据库开发之间的协同问题，从统一建模语言（Unified Modeling Language，UML）系统分析的角度，提出业务建模、系统分析与设计、模型映射构成的面向对象的关系数据库设计流程，通过UML可视化模型，实现软件开发周期中的需求统一．     

层级式可视化并行程序建模系统研究

可视化建模技术虽能降低并行程序设计的难度,但复杂的硬件结构仍使软件层面上的并行程序设计方法存在一定难度。为此,提出一种基于层级式建模思想的并行程序可视化建模方法和分层建模方案,设计和实现一个面向多层次集群环境的可视化建模系统e-ParaModel,用建模实例验证其可行性和实用性。     

基于统一建模语言的软件开发实例

统一建模语言(UML)是功能强大的可视化建模语言, 针对UML在建模方面的优势, 以汉中茶叶客户投诉管理系统为例, 从系统的功能分析、系统设计到系统实施, 重点描述了基于UML的软件系统开发建模过程, 并通过建模工具Power Designer 15, 构建了系统的需求模型、静态模型和动态模型.     

A survey of approaches for the visual model-driven development of next generation software-intensive systems

Software-intensive systems of the future are expected to be highly distributed and to exhibit adaptive and anticipatory behavior when operating in highly dynamic environments and interfacing with the physical world. Therefore, visual modeling techniques to address these software-intensive systems require a mix of models from a multitude of disciplines such as software engineering, control engineering, and business process engineering. As in this concert of techniques software provides the most flexible element, the integration of these different views can be expected to happen in the software. The software thus includes complex information processing capabilities as well as hard real-time coordination between distributed technical systems and computers.In this article, we identify a number of general requirements for the visual model-driven specification of next generation software-intensive systems. As business process engineering and software engineering are well integrated areas and in order to keep this survey focused, we restrict our attention here to approaches for the visual model-driven development of adaptable software-intensive systems where the integration of software engineering with control engineering concepts and safety issues are important. In this survey, we identify requirements and use them to classify and characterize a number of approaches that can be employed for the development of the considered class of software-intensive systems.     

UML技术在零部件资源协同管理系统中的应用

组建计算机支持的网络化协同设计平台,需要建立起支持协同设计的基于Web零部件管理系统。UML作为一种目前被广泛应用的面向对象软件建模语言,正好满足了零部件管理系统在设计与开发阶段的需求。首先简要概括了UML软件建模技术的内容和步骤;然后结合零部件管理系统的实际需求,给出了UML系统建模的详细设计应用实例,并在文章的最后介绍了系统实施开发的方案。     

视景数据库建模优化技术研究与应用

为了提高视景仿真的实时性,降低视景系统资源开销,采用视景数据库建模的综合优化技术和方法,研究了三维虚拟场景建模关键技术,并在实际项目中进行了应用。优化建模技术使得视景数据读取迅速,仿真效果真实流畅。     

基于“六法论”的动画造型艺术与技术研究

动画是高科技发展的产物之一,随着计算机技术和信息技术的发展,这些新技术逐渐被动画领域所吸收,成为现代动画技术的关键基础。动画造型是动画艺术的基本构成元素,同时也是品评一部动画作品优劣的关键因素。南朝谢赫的"六法论"是我国古代现存关于艺术审美的重要美学原则和标准。本文尝试用传统的"六法论"与现代动画制作技术相结合,分析动画造型的设计方法与制作技术,总结出一个优秀的动画造型如何结合六法论原理进行设计与制作。     

Multi-User Collaborative Assembly Planning over the Internet

1 Introduction Assembly planning is an important issue of product design for assembly, and many achievements have been obtained. Techniques such as geometric reasoning [1,2], genetic algorithms (GA) [3], virtual assembly [4,5] and so on are employed to assembly planning of relatively simple products successfully. But for the more complex cases, there is a combinational complexity problem when the geometric reasoning method is used. The fitness function in GA cannot take into account various…     

UML和设计模式在AMCCS中的综合应用

统一建模语言(Unified Modeling Language,UML)是一种可视化的面向对象的建模语言.设计模式是面向对象建模的一种辅助设计手段,它总结了面向对象设计的宝贵经验,使得在遇到相似场景时可以直接套用,提高复杂系统的设计效率.结合所实施的民航维修成本控制系统(AirCraft Maintenance Costing Control System,AMCCS)的开发工作,提出了使用UML技术进行系统整体规划设计、使用设计模式细化具体组件和部件的对象建模方法,已取得了良好的效果.     

基于多视角意象差异性的列车设施造型设计研究

提高列车设施造型设计是改善铁路客运质量的重要部分，目前列车设施造型设计 重点主要是功能和结构的改良，旅客的心理需求和视觉体验方面还有较大改善提升空间。解析 意象认知与造型设计相关性的变化，为造型参数的量化研究提供参考。在前期视觉意象与产品 造型关联解析的基础上，从走廊立位、走廊座位、中间座位、靠窗座位4 个不同视角进行实验， 验证不同位置视觉意象的差异性。针对不同视角的意象特点，统计三维样本的实验数据，应用 数量化分析的基本方法，归纳出多视角视觉意象的变化。在数据统计的基础上，结合视觉认知 特点进行分析，解析不同视角与视觉意象中雅致因子、凝静因子、柔润因子及宽和因子与视觉 舒适度的关联机制。     

Modeling task completion time of in-vehicle information systems while driving with keystroke level modeling

The use of touchscreen-based in-vehicle information systems (IVIS) is increasing. To ensure safe driving, it is important to evaluate IVIS task performance during driving situations. Therefore, we proposed a model to assess the task completion time (TCT) of IVIS tasks while driving using a keystroke-level modeling (KLM) technique. The basic assumptions and heuristic rules of driver behaviors were considered. In addition, based on the characteristics of visual and manual IVIS interactions, we determined the basic unit operators (i.e., visual, manual, and mental operators). User experiments were conducted to determine the individual execution times of unit tasks and to measure the TCT of IVIS tasks while driving. Based on the heuristic rules for model development and individual task execution times, we derive a predictive model for the TCT of IVIS tasks. We used a regression analysis to validate the modeling procedure, showing that the observed TCT was found to have a strong positive correlation with the predicted time from the modeling process. The findings showed that the task completion time needed to perform a secondary task in a driving context can be predicted by KLM. This study provides meaningful insights into the design of touchscreen-based IVIS to enhance driving safety.     

过程模型中批处理活动执行语义的研究

所有复杂的开发过程都需要过程模型来进行抽象的描述,因此定义了一个可视化过程建模语言VPML,并根据实际应用的需求增加了批处理活动。介绍了VPML的设计思想和基本的原语,详细定义了批处理活动,最后描述了VPML语言和批处理活动的执行语义。     

运用建模技术对制造业售后管理信息系统架构的设计与实现

管理信息系统发展至今30多年,已经深入到各行各业中。近年,日趋成熟的建模技术使得许多软件公司纷纷投入其中,并利用它辅助设计和开发软件。通过建模技术辅助设计与实现制造业售后管理信息系统架构,并设计出对应的各种数据模型,能突破系统原始开发扩展性和延伸性的局限。同时,成熟的数据模型又能对相关应用开发设计起到良好的引导作用,具有一定的参考价值与现实意义。并以此说明建模技术在系统开发中能起到降低开发难度,增强团队沟通能力,提高软件开发效率,提高软件开发移植性等优点。     

A ‘context-aware’ and agent-centric perspective for the alignment between individuals and organizations

The enterprise modeling field aims at representing organizations from several, inter-related perspectives. A number of enterprise modeling frameworks have been developed providing models, methods and tools that enable to communicate the structure and processes of organizations. These frameworks have been used both for systems development and organizational analysis ends, where the latter mainly focuses process (re)design efforts. We argue that enterprise modeling frameworks can be used for other kinds of organizational analysis. In particular, they can be used to capture and model work practices, human multitasking at work, and to compare models describing pre-defined behavior with actual execution.     

虚拟环境概念模型建模方法研究*

由于目前常用的概念建模方法对于虚拟环境中物体方位、行为和交互模型等信息缺乏足够的描述方法,在吸取现有概念模型建模概念和技术的基础上,提出了虚拟环境概念模型建模框架,给出了虚拟场景静态结构和动态行为的概念建模方法,并通过虚拟化学实验平台的设计和实现验证了方法的可行性。通过在虚拟环境设计阶段引入概念建模阶段,使不具备专业编程知识的普通人员通过使用图形化的建模语言也能够进行虚拟环境的开发,为虚拟环境的顶层设计提供了一个科学、有效的手段。     

Defining the abstract syntax of visual languages with advanced graph grammars—A case study based on behavior trees

Diagrammatic visual languages can increase the ability of engineers to model and understand complex systems. However, to effectively use visual models, the syntax and semantics of these languages should be defined precisely. Since most diagrammatic visual models that are currently used to specify systems can be described as (directed) typed graphs, graph grammars have been identified as a suitable formalism to describe the abstract syntax of visual modeling languages. In this article, we investigate how advanced graph-transformation techniques, such as conditional, structure-generic and type-generic graph-transformation rules, can help to improve and simplify the specification of the abstract syntax of a visual modeling language. To demonstrate the practicability of an approach that unifies these advanced graph-transformation techniques, we define the abstract syntax of behavior trees (BTs), a graphical specification language for functional requirements. Additionally, we provide a translational semantics of BTs by formalizing a translation scheme to the input language of the SAL model checking tool for each of the graph-transformation rules.