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Integration of Reusable Software Components and frameworks into a visual software construction approach

JOURNAL OF INFORMATION SCIENCE AND ENGINEERING 2000年第6期16卷 863-884页

作者： Chen, DJ Koong, CS Chen, WC Huang, SK van Diepen, NWP Natl Chiao Tung Univ Dept Comp Sci & Informat Engn Hsinchu 300 Taiwan Acad Sinica Inst Informat Sci Taipei 115 Taiwan Univ Nijmegen Inst Comp Sci Nijmegen Netherlands

Software reuse is an effective means of improving software productivity and software quality. Reusable Software Components (RSCs) are the basic building components for software programs constructed using the software reuse approach. The object-oriented approach is used to design and implement our RSCs. Our laboratory has already implemented more than 300 reusable software components, including design-level frameworks in various application domains and approximately 200,000 lines of code in our library. These components and frameworks have been accumulated in the course of designing and implementing strategy-based game systems, multimedia authoring systems (2-D and 3-D), multimedia playback systems, and other application systems. Multimedia software plays an important role in the software industry. In contrast to traditional software, multimedia software provides users with visual and audio effects through their interfaces and can more accurately model the real world. A media component may contain various elements, such as text descriptions, voice narration, and animation sequences, which more closely present the subject to be modeled. Such a reusable media component is commonly referred to as a Multimedia Reusable Component(MRC). Using RSCs, frameworks, and MRCs, our laboratory has successfully designed and implemented a commercial product called DIY Magic Cartoon World for use in making subject-based cartoons. The RSCs and frameworks can be visualized as icons for a visual programming model. Reuse-in-large practice is, therefore, achieved using visual programming techniques based on these visualized components. In this study, we introduce design principles and implementation techniques for our RSCs, frameworks, and MRCs. RSCs, frameworks, and MRCs are integrated into a visual software construction approach. More specifically, the design concept and implementation of an approachfor visual software construction are described. In addition to discussing the advantages

关键词： software component object-oriented software reuse visual programming framework multimedia

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Providing multiple views for objects

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SOFTWARE-PRACTICE & EXPERIENCE 2000年第7期30卷 803-823页

作者： Minsky, NH Pal, PP BBN Technol Cambridge MA 02138 USA Rutgers State Univ Dept Comp Sci New Brunswick NJ 08903 USA

The need for multiple views of an object is often encountered in software practice. This paper presents our experience in addressing this need under a software architecture known as the law-governed architecture. We introduce the notion of a surrogate object which allows an object to appear different and behave differently when used from different parts of a system. This concept requires some minor modifications to the classical inheritance-based object-oriented systems, mostly involving a judicious use of delegation. A concrete implementation of surrogates under the law-governed architecture is described and some applications of surrogates are briefly discussed. Copyright (C) 2000 John Wiley & Sons, Ltd.

关键词： object-oriented modeling and frameworks surrogate objects delegation design patterns law-governed architecture access control

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SmartAHS: A simulation framework for automated vehicles and highway systems

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MATHEMATICAL AND COMPUTER MODELLING 1998年第9-11期27卷 103-128页

作者： Gollu, A Varaiya, P Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA

SmartAHS is a software framework for the uniform specification, simulation, and objective evaluation of Intelligent Vehicle Highway System (IVHS) alternatives. This paper illustrates the use of the object-oriented paradigm in its design, implementation, and use. objective comparison of proposed highway automation alternatives is achieved, when all control architectures are specified in SmartAHS. The framework implementation is decomposed into three layers. A core set of entities, called SmartDb, implement the base classes of the framework, the scheduling mechanism, and a special syntax for a state machine formalism. The second layer, SmartAHS customizes these classes and implements entities specific to highway automation. The control and communication engineers are the users of SmartAHS;they further customize it to implement specific simulation applications such as SmartPATH. The users of the applications are system analysts and system planners. We discuss the design and implementation of SmartDb and SmartAHS and give a use-case example of a subset of SmartPATH. (C) 1998 Elsevier Science Ltd. All rights reserved.

关键词： simulation evaluation highway automation object-oriented framework

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A training experience with patterns

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COMMUNICATIONS OF THE ACM 1996年第10期39卷 60-64页

作者： Goldfedder, B Rising, L Dalmatian Group Inc Technical Resource Center AG Communication Systems

The article defines the object-oriented design patterns. It also describes the initial steps to introduce patterns to Phoenix, Arizona-based AG Communication systems Inc. through training by the Dalmatian Group Inc. Each pattern describes a problem that occurs over and over again in our environment and then describes the core of the solution to that problem in such a way that you can use this solution a million times over without ever doing it the same way twice. design patterns capture the static and dynamic structures of solutions that occur repeatedly when producing applications in a particular context. The firm organized evaluation meetings that were open to anyone interested in learning about patterns. That provided a larger audience for the information and more input for the discussions. The patterns sell themselves. Training in these patterns should be provided for teams to enhance communication and design knowledge. Some members of the team expressed concern with the lack of real-time, embedded system considerations in design Patterns. This was addressed in the training through the use of additional examples and implementation details lacking in the book.

关键词： Computer software development object-oriented methods (Computer science) Computer architecture Software engineering Occupational training Software patterns

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Performance evaluation of the object-relational transformation methodology

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DATA & KNOWLEDGE ENGINEERING 2001年第3期38卷 265-300页

作者： Rahayu, JW Chang, E Dillon, TS Taniar, D La Trobe Univ Dept Comp Sci & Comp Engn Bundoora Vic 3083 Australia Monash Univ Sch Business Syst Clayton Vic 3800 Australia

The emergence of the object-oriented (OO) methodology has shown its capabilities in modelling the real world better than the earlier relational methodology. However, object-oriented databases (OODBs) are still considered immature in comparison with relational databases (RDBs) which have existed for many years. RDBs still continue to dominate the implementation of databases constituting more than 90% of all database implementations [28]. It was felt worthwhile to exploit the great modelling power of OO methodology, while still facilitating relational implementations. These reasons have led us to develop an object-relational transformation methodology [20-25] which allows us to use the OO methodology for data modelling and to transform it into a relational logical model for implementation in relational database management systems (RDBMSs). The main purpose of this paper is to present a performance evaluation of the transformation methodology. The evaluation covers I/O cost models of different types of queries. The type of evaluation is basically comparison-based, in which the performance of SQL operations upon a set of tables derived from the relational data model is compared with the tables derived from the OO data model using the transformation methodology. The results of the evaluation show that the performance of the RDB implementation transferred from an OO conceptual model using our object-relational transformation methodology is better than the relational implementation using a conventional relational modelling. Moreover, in many cases, the relational modelling is not applicable since it cannot capture the design semantics particularly relating to collection types. Our object-relational methodology solves this problem. (C) 2001 Elsevier Science B.V. All rights reserved.

关键词： object-oriented conceptual model object-relational transformation relational databases performance evaluation quantitative analysis qualitative analysis

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A user-Centered, object-oriented Methodology for Developing Health Information systems: A Clinical Information System (CIS) Example

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JOURNAL OF MEDICAL systems 2012年第2期36卷 437-450页

作者： Konstantinidis, Georgios Anastassopoulos, George C. Karakos, Alexandros S. Anagnostou, Emmanouil Danielides, Vasileios Democritus Univ Thrace ENT Ear Nose Throat Dept Sch Med Alexandroupolis Greece Democritus Univ Thrace Med Informat Lab Sch Med Alexandroupolis Greece Democritus Univ Thrace Dept Elect & Comp Engn GR-67100 Xanthi Greece Nikaia Gen Hosp ENT Ear Nose Throat Dept Piraeus Greece

The aim of this study is to present our perspectives on healthcare analysis and design and the lessons learned from our experience with the development of a distributed, object-oriented Clinical Information System (CIS). In order to overcome known issues regarding development, implementation and finally acceptance of a CIS by the physicians we decided to develop a novel object-oriented methodology by integrating usability principles and techniques in a simplified version of a well established software engineering process (SEP), the Unified Process (UP). A multilayer architecture has been defined and implemented with the use of a vendor application framework. Our first experiences from a pilot implementation of our CIS are positive. This approach allowed us to gain a socio-technical understanding of the domain and enabled us to identify all the important factors that define both the structure and the behavior of a Health Information System.

关键词： user-centered object-oriented methodology UML Clinical information system Multi-layer architecture

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design and implementation of a smart card based healthcare information system

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COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2006年第1期81卷 66-78页

作者： Kardas, G Tunali, ET Ege Univ Int Comp Inst TR-35100 Izmir Turkey

Smart cards are used in information technologies as portable integrated devices with data storage and data processing capabilities. As in other fields, smart card use in health systems became popular due to their increased capacity and performance. Their efficient use with easy and fast data access facilities leads to implementation particularly widespread in security systems. In this paper, a smart card based healthcare information system is developed, The system uses smart card for personal identification and transfer of health data and provides data communication via a distributed protocol which is particularly developed for this study, TWO smart card software modules are implemented that run on patient and healthcare professional smart cards, respectively. in addition to personal information, general health information about the patient is also loaded to patient smart card. Health care providers use their own smart cards to be authenticated on the system and to access data on patient cards. Encryption keys and digital signature keys stored on smart cards of the system are used for secure and authenticated data communication between clients and database servers over distributed object protocol. System is developed on Java platform by using object oriented architecture and design patterns. (c) 2005 Elsevier Ireland Ltd. All rights reserved.

关键词： smart card healthcare information system distributed object protocol

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Integrating structured OO approaches with formal techniques for the development of real-time systems

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INFORMATION AND SOFTWARE TECHNOLOGY 1999年第7期41卷 435-450页

作者： Chen, Z Cau, A Zedan, H Yang, H De Montfort Univ Software Technol Res Lab SER Ctr Leicester LE1 9BH Leics England

The use of formal methods in the development of time-critical applications is essential if we want to achieve a high level of assurance in them. However, these methods have not yet been widely accepted in industry as compared to the more established structured and informal techniques. A reliable linkage between these two techniques will provide the developer with a powerful tool for developing a provably correct system. In this article, we explore the issue of integrating a real-time formal technique, TAM (Temporal Agent Model), with an industry-strength structured methodology known as HRT-HOOD. TAM is a systematic formal approach for the development of real-time systems based on the refinement calculus. Within TAM, a formal specification can be written (in a logic-based formalism), analysed and then refined to concrete representation through successive applications of sound refinement laws. Both abstract specification and concrete implementation are allowed to freely intermix. HRT-HOOD is an extension to the Hierarchical object-oriented design (HOOD) technique for the development of Hard Real-Time systems. It is a two-phase design technique dealing with the logical and physical architecture designs of the system which can handle both functional and non-functional requirement, respectively. The integrated technique is illustrated on a version of the mine control system. (C) 1999 Elsevier Science B.V. All rights reserved.

关键词： object-oriented design refinement calculus temporal agent model semantics Hard Real-Time Hierarchical object-oriented design (HRT-HOOD)

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System Configuration design of BIM object-oriented Database for Civil Engineering

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JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT 2022年第12期148卷 04022130-04022130页

作者： Li, Shi-Dong Xu, Zhao-Dong Southeast Univ China Pakistan Belt & Rd Joint Lab Smart Disaster Nanjing 210096 Peoples R China

Building information modeling (BIM) creates tremendous value for civil engineering through information integration. Not only does it make the formulation of data storage strategies more important at the beginning of a civil engineering project, but it also shows the potential value of further research into a unified BIM model that highly integrates all information in the project life cycle. However, it is not easy to store all the information in the project life cycle into a unified BIM model. To achieve this goal, this study proposed a shareable BIM back-end data system object-oriented database for BIM front-end applications (BIM-OODB), and established its complete system configuration. Based on the database design theory, three main aspects of BIM-OODB design are discussed, namely use case design, architecture design, and schema design. Then, four demonstration cases were selected to discuss the system implementation process of BIM-OODB in building and infrastructure projects. The results show that BIM-OODB has the potential to enable all participants to work around the unified shareable data system throughout the project life cycle. This study provides a reference for civil engineers to formulate data storage strategies in the early stage of a civil engineering projects and IT engineers to develop civil engineering data applications.

关键词： Building information modeling (BIM) Database design Information systems object-oriented database (OODB) Civil engineering

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EX6AFS - A DATA-ACQUISITION SYSTEM FOR HIGH-SPEED DISPERSIVE EXAFS MEASUREMENTS IMPLEMENTED USING object-oriented PROGRAMMING TECHNIQUES

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REVIEW OF SCIENTIFIC INSTRUMENTS 1995年第2期66卷 1391-1393页

作者： JENNINGS, G LEE, PL Materials Science Division Argonne National Laboratory 9700 S. Cass Avenue Argonne Illinois 60439

In this paper we describe the design and implementation of a computerized data‐acquisition system for high‐speed energy‐dispersive EXAFS experiments on the X6A beamline at the National Synchrotron Light Source. The acquisition system drives the stepper motors used to move the components of the experimental setup and controls the readout of the EXAFS spectra. The system runs on a Macintosh IIfx computer and is written entirely in the object‐oriented language C++. Large segments of the system are implemented by means of commercial class libraries, specifically the MacApp application framework from Apple, the Rogue Wave class library, and the Hierarchical Data Format datafile format library from the National Center for Supercomputing Applications. This reduces the amount of code that must be written and enhances reliability. The system makes use of several advanced features of C++: Multiple inheritance allows the code to be decomposed into independent software components and the use of exception handling allows the system to be much more reliable in the event of unexpected errors. object‐oriented techniques allow the program to be extended easily as new requirements develop. All sections of the program related to a particular concept are located in a small set of source files. The program will also be used as a prototype for future software development plans for the Basic Energy Science Synchrotron Radiation Center Collaborative Access Team beamlines being designed and built at the Advanced Photon Source. ? 1995 American Institute of Physics.

关键词： NSLS X?RAY SPECTRA DATA ACQUISITION systems PROGRAMMING SYNCHROTRON RADIATION design COMPUTERIZED CONTROL systems

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