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ACQUIRING EXPERIENCES WITH THE MODELING AND IMPLEMENTATION OF THE PROJECT LIFE-CYCLE PROCESS - THE PMDB WORK

SOFTWARE ENGINEERING JOURNAL 1991年第5期6卷 259-274页

作者： PENEDO, MH SHU, C TRW CO INC REDONDO BEACHCA 90278

Formalising and automating the software life-cycle processes are key factors in the improvement of software productivity. This paper describes the Project Master database (PMDB) work, three generations of investigations into the modelling and encoding of software life-cycle processes;it briefly describes past activities and concentrates on more recent investigations. It presents an approach to software process modelling based on an object-based model called the PMDB + model, which includes project elements, relationships between those elements and behavioural descriptions of project life-cycle activities. An overview of the model is presented, together with examples to illustrate the application of the model to existing software processes. It also describes a prototyping exercise that implemented the PMDB + model in an object-oriented database management system. Key results of these investigations, the impact of process implementations on the architecture of environments, and lessons learnt from the exercises are described.

关键词： project elements prototyping exercise software engineering object-oriented database management system encoding software process modelling Software engineering techniques project life-cycle activities Project Master database object-oriented databases PMDB+model object-oriented programming software life-cycle processes process implementations object-oriented databases object-oriented programming behavioural descriptions object-based model

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A system for information management in simulation of manufacturing processes

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ADVANCES IN ENGINEERING SOFTWARE 2004年第10-11期35卷 725-733页

作者： Johansson, H Åström, P Orsborn, K Univ Uppsala Dept Informat Technol Uppsala Database Lab SE-75105 Uppsala Sweden Lulea Univ Technol Div Comp Aided Design Polhem Lab S-95187 Lulea Sweden

A system has been developed to manage simulation information of manufacturing processes, such as mesh information, boundary conditions and process parameters. The goal is to enable information sharing and exchange to make it possible to simulate a whole chain of manufacturing processes, and thereby predict how a modification in one manufacturing process affects the characteristics of the final product. The system has been used to predict successful simulation of a cutting process using mesh information and process parameters. An object-relational database management system is embedded in the system that uses a conceptual EXPRESS schema as database schema. The database management system is lightweight main-memory resident and incorporates an extensible and object-oriented query language. Uniform storage using database technology enables information manipulation independently of any specific simulation tool. (C) 2004 Civil-Comp Ltd and Elsevier Ltd. All rights reserved.

关键词： object-oriented database management system extensible query language product data management manufacturing simulation finite element analysis information modelling

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Framework for change notification and view synchronization in distributed model management systems

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OMEGA-INTERNATIONAL JOURNAL OF management SCIENCE 1999年第4期27卷 431-443页

作者： Huh, SY Kim, HM Chung, QB Villanova Univ Dept Management Coll Commerce & Finance Villanova PA 19085 USA Korea Adv Inst Sci & Technol Grad Sch Management Dongdaemun Gu Seoul South Korea

Large-scale model management systems are increasingly in demand to support groups of users in collaborative work environment. Users of such systems share common models but approach them with different views depending on individual needs and skills. Since models change along with the reality that is captured in them. so should their dependent models and views. This calls for a mechanism to manage and synchronize such changes in the models and views so that the integrity of the modelling environment can be maintained. In this paper we propose a framework for change notification and view synchronization in distributed model management systems that (1) manages the dependency relationships between the shared models and the dependent user views and (2) coordinates the changes by way of controlling and communicating the propagation activities. The framework identifies the change requirements based on the locus of changes in shared models and the effects of such changes in the dependents. It further defines change management constructs and processes to establish a View synchronization mechanism. In the framework, structured modeling was adopted for the representation of mathematical models, the generic model concept for constructing and dealing with mathematical models and the object-oriented database management system (ODBMS) to combine them in a single formalism. We present a prototype distributed model management system that has been developed to substantiate the efficacy of the proposed framework. The prototype was implemented on Windows NT using C + + and a commercial ODBMS called objectStore. (C) 1999 Elsevier Science Ltd. All rights reserved.

关键词： distributed model management systems mathematical models structured modeling object-oriented database management system view synchronization

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Collaborative model management in departmental computing

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INFOR 2000年第4期38卷 373-389页

作者： Huh, SY Chung, QB Kim, HM Korea Adv Inst Sci & Technol Grad Sch Management Seoul South Korea Villanova Univ Villanova PA 19085 USA

Today's increasing connectivity between separate entities within an organization has encouraged us to revisit the old promises of departmental computing and propose a: new framework that can expand its potentials. When we view departmental computing from a distributed group decision support systems (DGDSS) perspective, it becomes evident that not only corporate data but also decision models should be an integral part of managerial decision making. In this paper, we present a framework for collaborative model management systems (MMS), which coordinates the changes made to shared decision models in the modelbase so that the net effect of the changes can be systematically propagated across multiple departments by automatically updating the model views. Details of the proposed model change propagation mechanism are discussed along with a realistic departmental computing scenario.

关键词： model management systems departmental computing mathematical models object-oriented database management system view synchronization

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An activity chain model and its application to global design

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CONCURRENT ENGINEERING-RESEARCH AND APPLICATIONS 1999年第3期7卷 245-255页

作者： Taura, T Aoki, Y Takada, H Kawashima, K Komeda, S Ikeda, H Numata, J Duo Syst Co Ltd Shinjuku Ku Tokyo 1620041 Japan Univ Tokyo RACE Meguro Ku Tokyo 1538904 Japan Nippon Steel Corp Ltd Sagamihara Kanagawa 2290006 Japan Mitsui Engn & Shipbldg Co Ltd Mihama Ku Chiba 2610023 Japan Nippon Unisoft Corp Chuo Ku Tokyo 1030013 Japan Sony Corp Shinagawa Ku Tokyo 1410001 Japan Musashi Inst Technol Tsuzuki Ku Yokohama Kanagawa 2240015 Japan

In this paper, the "Activity Chain Model" is described, which is a new design information model necessary for realizing a computer medium with which designers can dynamically share a wide range of design information containing process information such as the history and the intent. We implement the model in a computer system, and confirm the validity of the model. It is difficult for existing design information models to provide both intent-capturing and intent-explanation capabilities sufficiently. The Activity Chain Model introduces a chained structure into the activity in order to solve this difficulty by improving the explanation capability, and easily and efficiently capturing the design intent based on the action-based intent description. The model integrates both the product and the process based on the activity description. In the Activity Chain Model, product information is described by the "product units" associated with each other through "composition relations." The process information about the history of the design is described by the "activity units" associated with each other through the "sequence relations" according to the order of design activity executed along the time axis. Between a product unit and an activity unit, we consider the "object relation." We also consider a "constraint relation" and an "alternative relation" between the activity units as the relations concerning the design intent. The "constraint relation" denotes that a certain activity unit in the past is a constraint of a succeeding activity unit. The "alternative relation" denotes that a certain activity unit is an alternative of another activity unit. The "causal reasons" and the "teleological reasons" are described as attributes of the constraint relations and alternative relations, respectively. "Reason" here denotes the designer viewpoint in determining the corresponding relation. The hypothesis underlying the model is that the designer's inner (mental) process which forms

关键词： design process activity chain model design intent capturing global design knowledge medium collaboration object-oriented database management system

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A system for information management in simulation of manufacturing processes

A system for information management in simulation of manufac...

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3rd International Conference on Engineering Computational Technology

作者： Johansson, H Åström, P Orsborn, K Univ Uppsala Dept Informat Technol Uppsala Database Lab SE-75105 Uppsala Sweden Lulea Univ Technol Div Comp Aided Design Polhem Lab S-95187 Lulea Sweden

ISBN: (纸本)0948749857

关键词： object-oriented database management system extensible query language product data management manufacturing simulation finite element analysis information modelling

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object-oriented implementation of field artillery tactical data system

Object-oriented implementation of field artillery tactical d...

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作者： Mustafa Eser Naval Postgraduate School

学位级别：硕士

The U. S. Army lacks a single automated fire support system. The goal of Army's ongoing project of Advanced Field Artillery Tactical Data system (AFATDS) is to integrate all of its fire power under a single automated system to provide an efficient fire support in the battlefield. AFATDS is being implemented using the language ADA for battalion and above level. The problem for this research is to implement AFATDS for battalion (just for technical fire direction) level and below. In addition, we want to add a Graphical User Interface (GUI), use modem software engineering principles and add multitasking. The approach taken was to apply object-oriented paradigm for the design and development of the battery level of AFATDS using Microsoft Windows' operating environment which provides (non-preemptive) multitasking and a GUI, and Borland C++ as the development tool. The results are as follows: The battery level software of AFATDS is implemented. The GUI provided a better interface which facilitates easier training [Ref. 17]. Multitasking allowed multiple firing missions to execute concurrently which was not possible with BCS. object-oriented features of Borland C++ provided 60% improvement for GUI development than traditional programming languages.

关键词： Field Artillery Tactical Data system object-Orieted Programming object-oriented database management system

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基于OMNIX面向对象数据库管理系统的石油数据银行的研究

基于OMNIX面向对象数据库管理系统的石油数据银行的研究

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第十七届全国数据库学术会议

作者：余永红刘鸿儒徐洁磐南京大学谷元石油软件研究所新技术国家重点实验室

1引言跨企业的数据服务是石油工业界对勘探开发数据作为油田重要资产进行有效管理和应用的结果,是随着数据银行的建立而提出的。石油数据银行是石油行业实现企业内部和企业间数

关键词： Petroleum data bank object-oriented database management system

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基于面向对象数据库管理系统的电子商务数据支撑平台研究

基于面向对象数据库管理系统的电子商务数据支撑平台研究

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第十七届全国数据库学术会议

作者：余永红何瑷徐洁磐南大谷元石油软件研究所有限公司南京大学软件新技术国家重点实验室

1引言数据是电子商务的精髓,电子商务活动中的信息流、物流、资金流是电子商务数据的具体表现形式。对电子商务活动中的信息流、物流、资金流的处理归根结底是对数据信息的处理,可以说电子商务的核心就是数据处理,如何对电子商务活动中... 详细信息

1引言数据是电子商务的精髓,电子商务活动中的信息流、物流、资金流是电子商务数据的具体表现形式。对电子商务活动中的信息流、物流、资金流的处理归根结底是对数据信息的处理,可以说电子商务的核心就是数据处理,如何对电子商务活动中的数据进行有效、安全的管理是关系到电子商务成败的关键。由于数据库管理系统在对数据进行有效和安全管理方面的优势,可满足电子商务对数据信息的处理要求,因此数据库管理系统作为构成支持电子商务基础设施的一个重要组成部分,在电子商务中起着重要的数据支撑作用。

关键词： EBusiness object-oriented database management system Data Security Data Warehouse

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