Formalization and Verification of Business Process Modeling Based on UML and Petri Nets

In order to provide a quantitative analysis and verification method for activity diagrams based business process modeling, a formal definition of activity diagrams is introduced. And the basic requirements for activity diagrams based business process models are proposed. Furthermore, the standardized transformation technique between business process models and basic Petri nets is presented and the analysis method for the soundness and well-structured properties of business processes is introduced.

A UML profile for framework modeling

The current standard Unified Modeling Language(UML) could not model framework flexibility and extendibility adequately due to lack of appropriate constructs to distinguish framework hot-spots from kernel elements. A new UML profile that may customize UML for framework modeling was presented using the extension mechanisms of UML, providing a group of UML extensions to meet the needs of framework modeling. In this profile, the extended class diagrams and sequence diagrams were defined to straightforwardly identify the hot-spots and describe their instantiation restrictions. A transformation model based on design patterns was also put forward, such that the profile based framework design diagrams could be automatically mapped to the corresponding implementation diagrams. It was proved that the presented profile makes framework modeling more straightforwardly and therefore easier to understand and instantiate.

MODELING OF FMS BASED ON UML AND OPNS

As the main component of computer integrated manufacturing system (CIMS), flexible manufacturing system (FMS) should be an open system with reusability and extenchaility. Moreover, as FMS is a complex asynchronous concurrent system, its model also should have the abilities to express the concurrency in the system and to analyze the behavior of the system. It is difficult to use any one method to model such a complex system as FMS. A modeling method using Object-oriented modeling language-unified modeling language (UML) and object-Oriented Petri nets (OPNs) is proposed. Class diagram in UML is used to represent the static relations among the objects in FMS. OPNs are used to model the dynamic behavior of the objects and conduct performance analysis. OPNs also can be used to identify the attributes and operations of the objects. The model can describe the system integrally and can be used to design FMS control software naturally.

Capability requirements modeling and verification based on fuzzy ontology

The capability requirements of the command, control, communication, computing, intelligence, surveillance, reconnaissance （C41SR） systems are full of uncertain and vague information, which makes it difficult to model the C41SR architecture. The paper presents an approach to modeling the capability requirements with the fuzzy unified modeling language （UML） and building domain ontologies with fuzzy description logic （DL）. The UML modeling constructs are extended according to the meta model of Depart- ment of Defense Architecture Framework to improve their domain applicability, the fuzzy modeling mechanism is introduced to model the fuzzy efficiency features of capabilities, and the capability requirement models are converted into ontologies formalized in fuzzy DL so that the model consistency and reasonability can be checked with a DL reasoning system. Finally, a case study of C41SR capability requirements model checking is provided to demonstrate the availability and applicability of the method.

Spatial data modeling for coalfield geological environment

Presented a study on the design and implementation of spatial data modelingand application in the spatial data organization and management of a coalfield geologicalenvironment database.Based on analysis of a number of existing data models and takinginto account the unique data structure and characteristic, methodology and key techniquesin the object-oriented spatial data modeling were proposed for the coalfield geological environment.The model building process was developed using object-oriented technologyand the Unified Modeling Language (UML) on the platform of ESRI geodatabase datamodels.A case study of spatial data modeling in UML was presented with successful implementationin the spatial database of the coalfield geological environment.The modelbuilding and implementation provided an effective way of representing the complexity andspecificity of coalfield geological environment spatial data and an integrated managementof spatial and property data.

Modeling and OLAP Cubes for Database of Ground and Municipal Water Supply

Modeling plays an important role for the solution of the complex research problems. When the database became large and complex then it is necessary to create a unified model for getting the desired information in the minimum time and to implement the model in a better way. The present paper deals with the modeling for searching of the desired information from a large database by storing the data inside the three dimensional data cubes. A sample case study is considered as a real data related to the ground water and municipal water supply, which contains the data from the various localities of a city. For the demonstration purpose, a sample size is taken as nine but when it becomes very large for number of localities of different cities then it is necessary to store the data inside data cubes. A well known object-oriented Unified Modeling Language (UML) is used to create Unified class and state models. For verification purpose, sample queries are also performed and corresponding results are depicted.

A framework for an integrated unified modeling language

The unified modeling language(UML) is one of the most commonly used modeling languages in the software industry.It simplifies the complex process of design by providing a set of graphical notations,which helps express the objectoriented analysis and design of software projects.Although UML is applicable to different types of systems,domains,methods,and processes,it cannot express certain problem domain needs.Therefore,many extensions to UML have been proposed.In this paper,we propose a framework for integrating the UML extensions and then use the framework to propose an integrated unified modeling language-graphical(iUML-g) form.iUML-g integrates the existing UML extensions into one integrated form.This includes an integrated diagram for UML class,sequence,and use case diagrams.The proposed approach is evaluated using a case study.The proposed iUML-g is capable of modeling systems that use different domains.

Validation of static properties in unified modeling language models for cyber physical systems

Cyber physical systems (CPSs) can be found nowadays in various fields of activity. The increased interest for these systems as evidenced by the large number of applications led to complex research regarding the most suitable methods for design and development. A promising solution for specification, visualization, and documentation of CPSs uses the Object Management Group (OMG) unified modeling language (UML). UML models allow an intuitive approach for embedded systems design, helping end-users to specify the requirements. However, the UML models are represented in an informal language. Therefore, it is difficult to verify the correctness and completeness of a system design. The object constraint language (OCL) was defined to add constraints to UML, but it is deficient in strict notations of mathematics and logic that permits rigorous analysis and reasoning about the specifications. In this paper, we investigated how CPS applications modeled using UML deployment diagrams could be formally expressed and verified. We used Z language constructs and prototype verification system (PVS) as formal verification tools. Considering some relevant case studies presented in the literature, we investigated the opportunity of using this approach for validation of static properties in CPS UML models.

基于UMCS树的UML类图的混合相似性度量

软件重用是基于给定条件从存储库中检索以前开发的软件产品,检索基于相似性度量。UML(Unified Modeling Language)类图被广泛应用于软件设计,UML类图重用作为软件设计重用的核心而备受关注。因此,对UML类图的相似性开展研究。类图包含语义和结构信息。目前,UML类图的相似性研究主要集中在语义,也有个别讨论结构相似性,但没有考虑将语义和结构相结合。因此,提出一种结合语义和结构的混合相似性度量。鉴于UML类图的非形式化特征,将UML类图转换成图模型,搜索最大公共子图列表,构建了最大公共子图树,提出一个基于最大公共子图序列的混合相似性度量方法。针对概念公共子图和结构公共子图分别定义了语义匹配和结构匹配,并开展了相似性对比和基于相似性的分类质量比较实验,实验结果验证了所提出方法的优势。

带有并发行为的UML状态机图的形式语义

在软件开发过程中,UML(统一建模语言)状态机图是目前最流行的建模形式之一,它属于半形式化模型,无法用形式化的方法进行推理。为了能对UML状态机图进行推理,现有工作采用Petri网、时序逻辑语言XYZ/E、动态描述逻辑、Z(Object-Z)语言、CHAM化学抽象机等作为状态机图的形式语义,但这些语义都是行为语义,并没有从结构上直接形成体现真并发的形式语义。该文提出一种新的模型——统一结构模型作为带有并发行为的UML状态机图的形式语义,该模型不会增加或减少状态机图的任何信息。基于统一结构模型首先定义了状态机图的格局(全局状态),用于表现状态机图的执行过程,并且给出了UML状态机图的格局的转换规则,说明格局如何在状态机图中执行,在此基础上给出了状态机图的可达性算法,然后还对状态机图的死锁等性质进行了介绍,最后开发出一个原型工具,实现了状态机图的可达性分析,并用实例说明了该方法的应用。

UML到Event-B的系统化转换方法

在面向对象的软件开发中,UML已经成为事实上的建模标准。然而,UML虽然直观容易理解和应用,却存在着不精确的语义,而且UML是一种半形式化的建模语言,无法进行形式化的验证。Event-B是一种基于大量数学谓词逻辑的形式化方法,虽然精确却难以理解和应用。因此,如何结合UML图和Event-B方法的优点是研究的重点,以往的方法都是基于UML零散图到Event-B的转换,缺乏系统的转换方法。系统性的转换方法可以实现UML中的元素与Event-B中的元素相对应统一。一般的软件系统是中型系统,中型系统采用用例图、类图、状态图和顺序图这四种图就可以很好地表达清楚,有了上述的四种图,软件生命周期的需求获取、分析、设计、详细设计就可以完全表达清楚。文章中分别给出了这四种图到Event-B的转换方法,并将该系统的转换方法应用到对安全性和可靠性要求较高的电梯控制系统中。基于该实例的研究,验证了UML到Event-B系统性转换方法的可行性和有效性。UML到Event-B的系统转换方法不仅有利于UML的精确化和软件从业人员的使用,而且增强了形式化方法的可理解性,有利于形式化方法的推广和应用。

基于UML活动图的用例识别

在面向对象的软件开发过程中,统一建模语言(unified modeling language, UML)的用例图用于捕获用户的需求.传统描述用例的方法一般是开发者根据自己的经验,从需求中人工获取用例.然而,如何自动生成准确的用例仍然是一个待解决的问题.本文提出了一种通过用UML活动图半自动生成用例的方法.首先通过引入形式化模型——统一结构来描述用例图与活动图,其次给出分解活动图的算法,然后根据分解活动图得到的依赖链生成对应的用例的事件流,从而得到用例模型,最后通过所开发的原型CASE工具进行案例的演示,验证了本文所提出的方法的可行性。

基于UML的企业内部办公流程计算机系统设计研究

如今,计算机办公系统的设计与应用已成为各行业加强办公管理智能化、提升办公经济效益的重要手段。在此,介绍企业内部办公流程计算机系统相关技术,分析计算机办公系统的需求,以统一建模语言(UML)为建模工具,对企业内部办公流程计算机系统进行整体设计和详细的各功能模块分析设计,包括办公流程发起功能设计、办公流程审批功能设计、流程跟踪查询功能设计以及通知公告功能设计,并经过应用测试,证实该计算机办公系统良好,满足各项内部办公流程功能需求,可在企业内部办公工作中投人使用,以期实现企业内部办公流程的有序化、规范化和流程化。

基于MBSE的作战能力跨域描述元建模方法

针对作战能力跨域描述存在语义二义性、不利于交流等问题,提出一种基于模型系统工程的元建模方法。抽象出作战能力元模型并给出形式化定义;从能力、作战和信息视角扩展作战能力元模型定义作战能力描述语言;通过UML Profile技术实现作战能力描述语言建模工具;借鉴面向对象分析方法思路提出作战能力描述语言建模方法。以美军“分布式防御”概念为例对提出方法进行实例验证。结果表明,提出的方法易于理解、可靠性和可扩展性强,有效消除语义二义性的同时满足多视角跨域描述作战能力的需求。

UML在医学影像考试系统建模中的应用

统一建模语言UML是一种标准的、功能强大的建模语言。在介绍UML的基础上,讨论在医学影像在线考试系统的建模过程中,使用Rational Rose工具作为UML的建模环境,并使用UML语言实现系统建模的方法和步骤,给出考试系统的用例模型、静态模型和动态模型。通过该方法的应用,增强系统的可靠性、可重用性和可维护性。

从UML到元建模研究理解

随着UML的流行,掀起了人们对于元建模研究的热潮,UML是一种标准的图形化建模语言,但是人为的为不同的软件开发不同的建模语言费时费力,而元建模的诞生解决了这个问题。本文以UML功用和特点,元建模各个模块之间的关系做了浅显的分析和理解。

基于UML的商品房网上备案系统分析与设计

传统的商品房销售合同备案登记管理以手工为主,不仅效率低且易出错,而且由于信息不畅,存在一房多售、重复抵押等现象,也给房产交易市场造成混乱。商品房网上销售合同备案系统正是顺应信息化、标准化管理趋势,杜绝违规现象,进一步加强房地产交易市场管理而推出的房地产管理部门的信息管理系统。运用UML设计开发了商品房网上备案系统,针对商品房网上备案系统进行了系统需求分析,问题领域分析,确定了Use case图,建立了静态结构模型图、动态行为模型图等。

基于模型的嵌入式系统软件工程语言AADL与UML的比较

随着嵌入式系统规模、复杂度和性能需求的提升,嵌入式系统开发的重点从代码级提前到模型级,模型驱动体系结构成为嵌入式系统开发的主流。统一建模语言(UML)和结构分析和设计语言(AADL)是模型驱动系统工程的标准,从方法、扩展机制和应用领域三个方面对两者进行研究和比较,讨论模型分析、模型转换等相关技术。最后。

UMLStatecharts的模型检验方法

统一建模语言UML已广泛应用于软件开发中,验证UML模型是否满足某些关键性质成为一个重要问题.提出了对UML Statecharts进行模型检验的方法.首先用扩展层次自动机结构化地表示UML Statecharts,然后给出其操作语义,通过寻找最大无冲突迁移集可以保证语义的正确性.对于具有无穷运行的系统,该操作语义可以映射到一个Bchi自动机.使用基于自动机理论的模型检验方法来验证UML Statecharts的线性时态逻辑性质,并给出方法验证由Statecharts和协同图建模的复杂多对象系统.

UML Statechart图的操作语义

面向对象标准建模语言 UML(unified modeling language)缺乏精确的动态语义 .根据 UML1.1语义文档 ,提出描述对象状态机的 UML Statechart图的形式化操作语义 .该语义覆盖了 UML Statechart图的绝大部分特征 ,为 UML Statechart图的代码产生、模拟和测试用例生成奠定了基础 .根据上述语义 ,基于 Rose98完成了UML Statechart图的测试用例生成和测试过程的模拟 .